Merge branch 'develop' into enhancement/houdini_load_filepath_fix

client/ayon_core/addon/base.py

@@ -16,6 +16,7 @@ import six
 import appdirs
 import ayon_api
 
+from ayon_core import AYON_CORE_ROOT
 from ayon_core.lib import Logger, is_dev_mode_enabled
 from ayon_core.settings import get_studio_settings
 
@@ -335,14 +336,70 @@ def _load_ayon_addons(openpype_modules, modules_key, log):
     return addons_to_skip_in_core
 
 
+def _load_ayon_core_addons_dir(
+    ignore_addon_names, openpype_modules, modules_key, log
+):
+    addons_dir = os.path.join(AYON_CORE_ROOT, "addons")
+    if not os.path.exists(addons_dir):
+        return
+
+    imported_modules = []
+
+    # Make sure that addons which already have client code are not loaded
+    #   from core again, with older code
+    filtered_paths = []
+    for name in os.listdir(addons_dir):
+        if name in ignore_addon_names:
+            continue
+        path = os.path.join(addons_dir, name)
+        if os.path.isdir(path):
+            filtered_paths.append(path)
+
+    for path in filtered_paths:
+        while path in sys.path:
+            sys.path.remove(path)
+        sys.path.insert(0, path)
+
+        for name in os.listdir(path):
+            fullpath = os.path.join(path, name)
+            if os.path.isfile(fullpath):
+                basename, ext = os.path.splitext(name)
+                if ext != ".py":
+                    continue
+            else:
+                basename = name
+            try:
+                module = __import__(basename, fromlist=("",))
+                for attr_name in dir(module):
+                    attr = getattr(module, attr_name)
+                    if (
+                        inspect.isclass(attr)
+                        and issubclass(attr, AYONAddon)
+                    ):
+                        new_import_str = "{}.{}".format(modules_key, basename)
+                        sys.modules[new_import_str] = module
+                        setattr(openpype_modules, basename, module)
+                        imported_modules.append(module)
+                        break
+
+            except Exception:
+                log.error(
+                    "Failed to import addon '{}'.".format(fullpath),
+                    exc_info=True
+                )
+    return imported_modules
+
+
 def _load_addons_in_core(
     ignore_addon_names, openpype_modules, modules_key, log
 ):
+    _load_ayon_core_addons_dir(
+        ignore_addon_names, openpype_modules, modules_key, log
+    )
     # Add current directory at first place
     #   - has small differences in import logic
-    current_dir = os.path.abspath(os.path.dirname(__file__))
-    hosts_dir = os.path.join(os.path.dirname(current_dir), "hosts")
-    modules_dir = os.path.join(os.path.dirname(current_dir), "modules")
+    hosts_dir = os.path.join(AYON_CORE_ROOT, "hosts")
+    modules_dir = os.path.join(AYON_CORE_ROOT, "modules")
 
     ignored_host_names = set(IGNORED_HOSTS_IN_AYON)
     ignored_module_dir_filenames = (

client/ayon_core/addons/applications/ayon_applications/__init__.py

@@ -0,0 +1,58 @@
+from .constants import (
+    APPLICATIONS_ADDON_ROOT,
+    DEFAULT_ENV_SUBGROUP,
+    PLATFORM_NAMES,
+)
+from .exceptions import (
+    ApplicationNotFound,
+    ApplicationExecutableNotFound,
+    ApplicationLaunchFailed,
+    MissingRequiredKey,
+)
+from .defs import (
+    LaunchTypes,
+    ApplicationExecutable,
+    UndefinedApplicationExecutable,
+    ApplicationGroup,
+    Application,
+    EnvironmentToolGroup,
+    EnvironmentTool,
+)
+from .hooks import (
+    LaunchHook,
+    PreLaunchHook,
+    PostLaunchHook,
+)
+from .manager import (
+    ApplicationManager,
+    ApplicationLaunchContext,
+)
+from .addon import ApplicationsAddon
+
+
+__all__ = (
+    "DEFAULT_ENV_SUBGROUP",
+    "PLATFORM_NAMES",
+
+    "ApplicationNotFound",
+    "ApplicationExecutableNotFound",
+    "ApplicationLaunchFailed",
+    "MissingRequiredKey",
+
+    "LaunchTypes",
+    "ApplicationExecutable",
+    "UndefinedApplicationExecutable",
+    "ApplicationGroup",
+    "Application",
+    "EnvironmentToolGroup",
+    "EnvironmentTool",
+
+    "LaunchHook",
+    "PreLaunchHook",
+    "PostLaunchHook",
+
+    "ApplicationManager",
+    "ApplicationLaunchContext",
+
+    "ApplicationsAddon",
+)

client/ayon_core/addons/applications/ayon_applications/addon.py

@@ -0,0 +1,169 @@
+import os
+import json
+
+from ayon_core.addon import AYONAddon, IPluginPaths, click_wrap
+
+from .constants import APPLICATIONS_ADDON_ROOT
+from .defs import LaunchTypes
+from .manager import ApplicationManager
+
+
+class ApplicationsAddon(AYONAddon, IPluginPaths):
+    name = "applications"
+
+    def get_app_environments_for_context(
+        self,
+        project_name,
+        folder_path,
+        task_name,
+        full_app_name,
+        env_group=None,
+        launch_type=None,
+        env=None,
+    ):
+        """Calculate environment variables for launch context.
+
+        Args:
+            project_name (str): Project name.
+            folder_path (str): Folder path.
+            task_name (str): Task name.
+            full_app_name (str): Full application name.
+            env_group (Optional[str]): Environment group.
+            launch_type (Optional[str]): Launch type.
+            env (Optional[dict[str, str]]): Environment variables to update.
+
+        Returns:
+            dict[str, str]: Environment variables for context.
+
+        """
+        from ayon_applications.utils import get_app_environments_for_context
+
+        if not full_app_name:
+            return {}
+
+        return get_app_environments_for_context(
+            project_name,
+            folder_path,
+            task_name,
+            full_app_name,
+            env_group=env_group,
+            launch_type=launch_type,
+            env=env,
+            addons_manager=self.manager
+        )
+
+    def get_farm_publish_environment_variables(
+        self,
+        project_name,
+        folder_path,
+        task_name,
+        full_app_name=None,
+        env_group=None,
+    ):
+        """Calculate environment variables for farm publish.
+
+        Args:
+            project_name (str): Project name.
+            folder_path (str): Folder path.
+            task_name (str): Task name.
+            env_group (Optional[str]): Environment group.
+            full_app_name (Optional[str]): Full application name. Value from
+                environment variable 'AYON_APP_NAME' is used if 'None' is
+                passed.
+
+        Returns:
+            dict[str, str]: Environment variables for farm publish.
+
+        """
+        if full_app_name is None:
+            full_app_name = os.getenv("AYON_APP_NAME")
+
+        return self.get_app_environments_for_context(
+            project_name,
+            folder_path,
+            task_name,
+            full_app_name,
+            env_group=env_group,
+            launch_type=LaunchTypes.farm_publish
+        )
+
+    def get_applications_manager(self, settings=None):
+        """Get applications manager.
+
+        Args:
+            settings (Optional[dict]): Studio/project settings.
+
+        Returns:
+            ApplicationManager: Applications manager.
+
+        """
+        return ApplicationManager(settings)
+
+    def get_plugin_paths(self):
+        return {
+            "publish": [
+                os.path.join(APPLICATIONS_ADDON_ROOT, "plugins", "publish")
+            ]
+        }
+
+    # --- CLI ---
+    def cli(self, addon_click_group):
+        main_group = click_wrap.group(
+            self._cli_main, name=self.name, help="Applications addon"
+        )
+        (
+            main_group.command(
+                self._cli_extract_environments,
+                name="extractenvironments",
+                help=(
+                    "Extract environment variables for context into json file"
+                )
+            )
+            .argument("output_json_path")
+            .option("--project", help="Project name", default=None)
+            .option("--folder", help="Folder path", default=None)
+            .option("--task", help="Task name", default=None)
+            .option("--app", help="Application name", default=None)
+            .option(
+                "--envgroup",
+                help="Environment group (e.g. \"farm\")",
+                default=None
+            )
+        )
+        # Convert main command to click object and add it to parent group
+        addon_click_group.add_command(
+            main_group.to_click_obj()
+        )
+
+    def _cli_main(self):
+        pass
+
+    def _cli_extract_environments(
+        self, output_json_path, project, folder, task, app, envgroup
+    ):
+        """Produces json file with environment based on project and app.
+
+        Called by farm integration to propagate environment into farm jobs.
+
+        Args:
+            output_json_path (str): Output json file path.
+            project (str): Project name.
+            folder (str): Folder path.
+            task (str): Task name.
+            app (str): Full application name e.g. 'maya/2024'.
+            envgroup (str): Environment group.
+
+        """
+        if all((project, folder, task, app)):
+            env = self.get_farm_publish_environment_variables(
+                project, folder, task, app, env_group=envgroup,
+            )
+        else:
+            env = os.environ.copy()
+
+        output_dir = os.path.dirname(output_json_path)
+        if not os.path.exists(output_dir):
+            os.makedirs(output_dir)
+
+        with open(output_json_path, "w") as file_stream:
+            json.dump(env, file_stream, indent=4)

client/ayon_core/addons/applications/ayon_applications/constants.py

@@ -0,0 +1,6 @@
+import os
+
+APPLICATIONS_ADDON_ROOT = os.path.dirname(os.path.abspath(__file__))
+
+PLATFORM_NAMES = {"windows", "linux", "darwin"}
+DEFAULT_ENV_SUBGROUP = "standard"

client/ayon_core/addons/applications/ayon_applications/defs.py

@@ -0,0 +1,404 @@
+import os
+import platform
+import json
+import copy
+
+from ayon_core.lib import find_executable
+
+
+class LaunchTypes:
+    """Launch types are filters for pre/post-launch hooks.
+
+    Please use these variables in case they'll change values.
+    """
+
+    # Local launch - application is launched on local machine
+    local = "local"
+    # Farm render job - application is on farm
+    farm_render = "farm-render"
+    # Farm publish job - integration post-render job
+    farm_publish = "farm-publish"
+    # Remote launch - application is launched on remote machine from which
+    #     can be started publishing
+    remote = "remote"
+    # Automated launch - application is launched with automated publishing
+    automated = "automated"
+
+
+class ApplicationExecutable:
+    """Representation of executable loaded from settings."""
+
+    def __init__(self, executable):
+        # Try to format executable with environments
+        try:
+            executable = executable.format(**os.environ)
+        except Exception:
+            pass
+
+        # On MacOS check if exists path to executable when ends with `.app`
+        # - it is common that path will lead to "/Applications/Blender" but
+        #   real path is "/Applications/Blender.app"
+        if platform.system().lower() == "darwin":
+            executable = self.macos_executable_prep(executable)
+
+        self.executable_path = executable
+
+    def __str__(self):
+        return self.executable_path
+
+    def __repr__(self):
+        return "<{}> {}".format(self.__class__.__name__, self.executable_path)
+
+    @staticmethod
+    def macos_executable_prep(executable):
+        """Try to find full path to executable file.
+
+        Real executable is stored in '*.app/Contents/MacOS/<executable>'.
+
+        Having path to '*.app' gives ability to read it's plist info and
+        use "CFBundleExecutable" key from plist to know what is "executable."
+
+        Plist is stored in '*.app/Contents/Info.plist'.
+
+        This is because some '*.app' directories don't have same permissions
+        as real executable.
+        """
+        # Try to find if there is `.app` file
+        if not os.path.exists(executable):
+            _executable = executable + ".app"
+            if os.path.exists(_executable):
+                executable = _executable
+
+        # Try to find real executable if executable has `Contents` subfolder
+        contents_dir = os.path.join(executable, "Contents")
+        if os.path.exists(contents_dir):
+            executable_filename = None
+            # Load plist file and check for bundle executable
+            plist_filepath = os.path.join(contents_dir, "Info.plist")
+            if os.path.exists(plist_filepath):
+                import plistlib
+
+                if hasattr(plistlib, "load"):
+                    with open(plist_filepath, "rb") as stream:
+                        parsed_plist = plistlib.load(stream)
+                else:
+                    parsed_plist = plistlib.readPlist(plist_filepath)
+                executable_filename = parsed_plist.get("CFBundleExecutable")
+
+            if executable_filename:
+                executable = os.path.join(
+                    contents_dir, "MacOS", executable_filename
+                )
+
+        return executable
+
+    def as_args(self):
+        return [self.executable_path]
+
+    def _realpath(self):
+        """Check if path is valid executable path."""
+        # Check for executable in PATH
+        result = find_executable(self.executable_path)
+        if result is not None:
+            return result
+
+        # This is not 100% validation but it is better than remove ability to
+        #   launch .bat, .sh or extentionless files
+        if os.path.exists(self.executable_path):
+            return self.executable_path
+        return None
+
+    def exists(self):
+        if not self.executable_path:
+            return False
+        return bool(self._realpath())
+
+
+class UndefinedApplicationExecutable(ApplicationExecutable):
+    """Some applications do not require executable path from settings.
+
+    In that case this class is used to "fake" existing executable.
+    """
+    def __init__(self):
+        pass
+
+    def __str__(self):
+        return self.__class__.__name__
+
+    def __repr__(self):
+        return "<{}>".format(self.__class__.__name__)
+
+    def as_args(self):
+        return []
+
+    def exists(self):
+        return True
+
+
+class ApplicationGroup:
+    """Hold information about application group.
+
+    Application group wraps different versions(variants) of application.
+    e.g. "maya" is group and "maya_2020" is variant.
+
+    Group hold `host_name` which is implementation name used in AYON. Also
+    holds `enabled` if whole app group is enabled or `icon` for application
+    icon path in resources.
+
+    Group has also `environment` which hold same environments for all variants.
+
+    Args:
+        name (str): Groups' name.
+        data (dict): Group defying data loaded from settings.
+        manager (ApplicationManager): Manager that created the group.
+    """
+
+    def __init__(self, name, data, manager):
+        self.name = name
+        self.manager = manager
+        self._data = data
+
+        self.enabled = data["enabled"]
+        self.label = data["label"] or None
+        self.icon = data["icon"] or None
+        env = {}
+        try:
+            env = json.loads(data["environment"])
+        except Exception:
+            pass
+        self._environment = env
+
+        host_name = data["host_name"] or None
+        self.is_host = host_name is not None
+        self.host_name = host_name
+
+        settings_variants = data["variants"]
+        variants = {}
+        for variant_data in settings_variants:
+            app_variant = Application(variant_data, self)
+            variants[app_variant.name] = app_variant
+
+        self.variants = variants
+
+    def __repr__(self):
+        return "<{}> - {}".format(self.__class__.__name__, self.name)
+
+    def __iter__(self):
+        for variant in self.variants.values():
+            yield variant
+
+    @property
+    def environment(self):
+        return copy.deepcopy(self._environment)
+
+
+class Application:
+    """Hold information about application.
+
+    Object by itself does nothing special.
+
+    Args:
+        data (dict): Data for the version containing information about
+            executables, variant label or if is enabled.
+            Only required key is `executables`.
+        group (ApplicationGroup): App group object that created the application
+            and under which application belongs.
+
+    """
+    def __init__(self, data, group):
+        self._data = data
+        name = data["name"]
+        label = data["label"] or name
+        enabled = False
+        if group.enabled:
+            enabled = data.get("enabled", True)
+
+        if group.label:
+            full_label = " ".join((group.label, label))
+        else:
+            full_label = label
+        env = {}
+        try:
+            env = json.loads(data["environment"])
+        except Exception:
+            pass
+
+        arguments = data["arguments"]
+        if isinstance(arguments, dict):
+            arguments = arguments.get(platform.system().lower())
+
+        if not arguments:
+            arguments = []
+
+        _executables = data["executables"].get(platform.system().lower(), [])
+        executables = [
+            ApplicationExecutable(executable)
+            for executable in _executables
+        ]
+
+        self.group = group
+
+        self.name = name
+        self.label = label
+        self.enabled = enabled
+        self.use_python_2 = data.get("use_python_2", False)
+
+        self.full_name = "/".join((group.name, name))
+        self.full_label = full_label
+        self.arguments = arguments
+        self.executables = executables
+        self._environment = env
+
+    def __repr__(self):
+        return "<{}> - {}".format(self.__class__.__name__, self.full_name)
+
+    @property
+    def environment(self):
+        return copy.deepcopy(self._environment)
+
+    @property
+    def manager(self):
+        return self.group.manager
+
+    @property
+    def host_name(self):
+        return self.group.host_name
+
+    @property
+    def icon(self):
+        return self.group.icon
+
+    @property
+    def is_host(self):
+        return self.group.is_host
+
+    def find_executable(self):
+        """Try to find existing executable for application.
+
+        Returns (str): Path to executable from `executables` or None if any
+            exists.
+        """
+        for executable in self.executables:
+            if executable.exists():
+                return executable
+        return None
+
+    def launch(self, *args, **kwargs):
+        """Launch the application.
+
+        For this purpose is used manager's launch method to keep logic at one
+        place.
+
+        Arguments must match with manager's launch method. That's why *args
+        **kwargs are used.
+
+        Returns:
+            subprocess.Popen: Return executed process as Popen object.
+        """
+        return self.manager.launch(self.full_name, *args, **kwargs)
+
+
+class EnvironmentToolGroup:
+    """Hold information about environment tool group.
+
+    Environment tool group may hold different variants of same tool and set
+    environments that are same for all of them.
+
+    e.g. "mtoa" may have different versions but all environments except one
+        are same.
+
+    Args:
+        data (dict): Group information with variants.
+        manager (ApplicationManager): Manager that creates the group.
+    """
+
+    def __init__(self, data, manager):
+        name = data["name"]
+        label = data["label"]
+
+        self.name = name
+        self.label = label
+        self._data = data
+        self.manager = manager
+
+        environment = {}
+        try:
+            environment = json.loads(data["environment"])
+        except Exception:
+            pass
+        self._environment = environment
+
+        variants = data.get("variants") or []
+        variants_by_name = {}
+        for variant_data in variants:
+            tool = EnvironmentTool(variant_data, self)
+            variants_by_name[tool.name] = tool
+        self.variants = variants_by_name
+
+    def __repr__(self):
+        return "<{}> - {}".format(self.__class__.__name__, self.name)
+
+    def __iter__(self):
+        for variant in self.variants.values():
+            yield variant
+
+    @property
+    def environment(self):
+        return copy.deepcopy(self._environment)
+
+
+class EnvironmentTool:
+    """Hold information about application tool.
+
+    Structure of tool information.
+
+    Args:
+        variant_data (dict): Variant data with environments and
+            host and app variant filters.
+        group (EnvironmentToolGroup): Name of group which wraps tool.
+    """
+
+    def __init__(self, variant_data, group):
+        # Backwards compatibility 3.9.1 - 3.9.2
+        # - 'variant_data' contained only environments but contain also host
+        #   and application variant filters
+        name = variant_data["name"]
+        label = variant_data["label"]
+        host_names = variant_data["host_names"]
+        app_variants = variant_data["app_variants"]
+
+        environment = {}
+        try:
+            environment = json.loads(variant_data["environment"])
+        except Exception:
+            pass
+
+        self.host_names = host_names
+        self.app_variants = app_variants
+        self.name = name
+        self.variant_label = label
+        self.label = " ".join((group.label, label))
+        self.group = group
+
+        self._environment = environment
+        self.full_name = "/".join((group.name, name))
+
+    def __repr__(self):
+        return "<{}> - {}".format(self.__class__.__name__, self.full_name)
+
+    @property
+    def environment(self):
+        return copy.deepcopy(self._environment)
+
+    def is_valid_for_app(self, app):
+        """Is tool valid for application.
+
+        Args:
+            app (Application): Application for which are prepared environments.
+        """
+        if self.app_variants and app.full_name not in self.app_variants:
+            return False
+
+        if self.host_names and app.host_name not in self.host_names:
+            return False
+        return True

client/ayon_core/addons/applications/ayon_applications/exceptions.py

@@ -0,0 +1,50 @@
+class ApplicationNotFound(Exception):
+    """Application was not found in ApplicationManager by name."""
+
+    def __init__(self, app_name):
+        self.app_name = app_name
+        super(ApplicationNotFound, self).__init__(
+            "Application \"{}\" was not found.".format(app_name)
+        )
+
+
+class ApplicationExecutableNotFound(Exception):
+    """Defined executable paths are not available on the machine."""
+
+    def __init__(self, application):
+        self.application = application
+        details = None
+        if not application.executables:
+            msg = (
+                "Executable paths for application \"{}\"({}) are not set."
+            )
+        else:
+            msg = (
+                "Defined executable paths for application \"{}\"({})"
+                " are not available on this machine."
+            )
+            details = "Defined paths:"
+            for executable in application.executables:
+                details += "\n- " + executable.executable_path
+
+        self.msg = msg.format(application.full_label, application.full_name)
+        self.details = details
+
+        exc_mgs = str(self.msg)
+        if details:
+            # Is good idea to pass new line symbol to exception message?
+            exc_mgs += "\n" + details
+        self.exc_msg = exc_mgs
+        super(ApplicationExecutableNotFound, self).__init__(exc_mgs)
+
+
+class ApplicationLaunchFailed(Exception):
+    """Application launch failed due to known reason.
+
+    Message should be self explanatory as traceback won't be shown.
+    """
+    pass
+
+
+class MissingRequiredKey(KeyError):
+    pass

client/ayon_core/addons/applications/ayon_applications/hooks.py

@@ -0,0 +1,150 @@
+import platform
+from abc import ABCMeta, abstractmethod
+
+import six
+
+from ayon_core.lib import Logger
+
+from .defs import LaunchTypes
+
+
+@six.add_metaclass(ABCMeta)
+class LaunchHook:
+    """Abstract base class of launch hook."""
+    # Order of prelaunch hook, will be executed as last if set to None.
+    order = None
+    # List of host implementations, skipped if empty.
+    hosts = set()
+    # Set of application groups
+    app_groups = set()
+    # Set of specific application names
+    app_names = set()
+    # Set of platform availability
+    platforms = set()
+    # Set of launch types for which is available
+    # - if empty then is available for all launch types
+    # - by default has 'local' which is most common reason for launc hooks
+    launch_types = {LaunchTypes.local}
+
+    def __init__(self, launch_context):
+        """Constructor of launch hook.
+
+        Always should be called
+        """
+        self.log = Logger.get_logger(self.__class__.__name__)
+
+        self.launch_context = launch_context
+
+        is_valid = self.class_validation(launch_context)
+        if is_valid:
+            is_valid = self.validate()
+
+        self.is_valid = is_valid
+
+    @classmethod
+    def class_validation(cls, launch_context):
+        """Validation of class attributes by launch context.
+
+        Args:
+            launch_context (ApplicationLaunchContext): Context of launching
+                application.
+
+        Returns:
+            bool: Is launch hook valid for the context by class attributes.
+        """
+        if cls.platforms:
+            low_platforms = tuple(
+                _platform.lower()
+                for _platform in cls.platforms
+            )
+            if platform.system().lower() not in low_platforms:
+                return False
+
+        if cls.hosts:
+            if launch_context.host_name not in cls.hosts:
+                return False
+
+        if cls.app_groups:
+            if launch_context.app_group.name not in cls.app_groups:
+                return False
+
+        if cls.app_names:
+            if launch_context.app_name not in cls.app_names:
+                return False
+
+        if cls.launch_types:
+            if launch_context.launch_type not in cls.launch_types:
+                return False
+
+        return True
+
+    @property
+    def data(self):
+        return self.launch_context.data
+
+    @property
+    def application(self):
+        return getattr(self.launch_context, "application", None)
+
+    @property
+    def manager(self):
+        return getattr(self.application, "manager", None)
+
+    @property
+    def host_name(self):
+        return getattr(self.application, "host_name", None)
+
+    @property
+    def app_group(self):
+        return getattr(self.application, "group", None)
+
+    @property
+    def app_name(self):
+        return getattr(self.application, "full_name", None)
+
+    @property
+    def addons_manager(self):
+        return getattr(self.launch_context, "addons_manager", None)
+
+    @property
+    def modules_manager(self):
+        """
+        Deprecated:
+            Use 'addons_wrapper' instead.
+        """
+        return self.addons_manager
+
+    def validate(self):
+        """Optional validation of launch hook on initialization.
+
+        Returns:
+            bool: Hook is valid (True) or invalid (False).
+        """
+        # QUESTION Not sure if this method has any usable potential.
+        # - maybe result can be based on settings
+        return True
+
+    @abstractmethod
+    def execute(self, *args, **kwargs):
+        """Abstract execute method where logic of hook is."""
+        pass
+
+
+class PreLaunchHook(LaunchHook):
+    """Abstract class of prelaunch hook.
+
+    This launch hook will be processed before application is launched.
+
+    If any exception will happen during processing the application won't be
+    launched.
+    """
+
+
+class PostLaunchHook(LaunchHook):
+    """Abstract class of postlaunch hook.
+
+    This launch hook will be processed after application is launched.
+
+    Nothing will happen if any exception will happen during processing. And
+    processing of other postlaunch hooks won't stop either.
+    """

client/ayon_core/addons/applications/ayon_applications/manager.py

@@ -0,0 +1,676 @@
+import os
+import sys
+import copy
+import json
+import tempfile
+import platform
+import inspect
+import subprocess
+
+import six
+
+from ayon_core import AYON_CORE_ROOT
+from ayon_core.settings import get_studio_settings
+from ayon_core.lib import (
+    Logger,
+    modules_from_path,
+    classes_from_module,
+    get_linux_launcher_args,
+)
+from ayon_core.addon import AddonsManager
+
+from .constants import DEFAULT_ENV_SUBGROUP
+from .exceptions import (
+    ApplicationNotFound,
+    ApplicationExecutableNotFound,
+)
+from .hooks import PostLaunchHook, PreLaunchHook
+from .defs import EnvironmentToolGroup, ApplicationGroup, LaunchTypes
+
+
+class ApplicationManager:
+    """Load applications and tools and store them by their full name.
+
+    Args:
+        studio_settings (dict): Preloaded studio settings. When passed manager
+            will always use these values. Gives ability to create manager
+            using different settings.
+    """
+
+    def __init__(self, studio_settings=None):
+        self.log = Logger.get_logger(self.__class__.__name__)
+
+        self.app_groups = {}
+        self.applications = {}
+        self.tool_groups = {}
+        self.tools = {}
+
+        self._studio_settings = studio_settings
+
+        self.refresh()
+
+    def set_studio_settings(self, studio_settings):
+        """Ability to change init system settings.
+
+        This will trigger refresh of manager.
+        """
+        self._studio_settings = studio_settings
+
+        self.refresh()
+
+    def refresh(self):
+        """Refresh applications from settings."""
+        self.app_groups.clear()
+        self.applications.clear()
+        self.tool_groups.clear()
+        self.tools.clear()
+
+        if self._studio_settings is not None:
+            settings = copy.deepcopy(self._studio_settings)
+        else:
+            settings = get_studio_settings(
+                clear_metadata=False, exclude_locals=False
+            )
+
+        applications_addon_settings = settings["applications"]
+
+        # Prepare known applications
+        app_defs = applications_addon_settings["applications"]
+        additional_apps = app_defs.pop("additional_apps")
+        for additional_app in additional_apps:
+            app_name = additional_app.pop("name")
+            if app_name in app_defs:
+                self.log.warning((
+                    "Additional application '{}' is already"
+                    " in built-in applications."
+                ).format(app_name))
+            app_defs[app_name] = additional_app
+
+        for group_name, variant_defs in app_defs.items():
+            group = ApplicationGroup(group_name, variant_defs, self)
+            self.app_groups[group_name] = group
+            for app in group:
+                self.applications[app.full_name] = app
+
+        tools_definitions = applications_addon_settings["tool_groups"]
+        for tool_group_data in tools_definitions:
+            group = EnvironmentToolGroup(tool_group_data, self)
+            self.tool_groups[group.name] = group
+            for tool in group:
+                self.tools[tool.full_name] = tool
+
+    def find_latest_available_variant_for_group(self, group_name):
+        group = self.app_groups.get(group_name)
+        if group is None or not group.enabled:
+            return None
+
+        output = None
+        for _, variant in reversed(sorted(group.variants.items())):
+            executable = variant.find_executable()
+            if executable:
+                output = variant
+                break
+        return output
+
+    def create_launch_context(self, app_name, **data):
+        """Prepare launch context for application.
+
+        Args:
+            app_name (str): Name of application that should be launched.
+            **data (Any): Any additional data. Data may be used during
+
+        Returns:
+            ApplicationLaunchContext: Launch context for application.
+
+        Raises:
+            ApplicationNotFound: Application was not found by entered name.
+        """
+
+        app = self.applications.get(app_name)
+        if not app:
+            raise ApplicationNotFound(app_name)
+
+        executable = app.find_executable()
+
+        return ApplicationLaunchContext(
+            app, executable, **data
+        )
+
+    def launch_with_context(self, launch_context):
+        """Launch application using existing launch context.
+
+        Args:
+            launch_context (ApplicationLaunchContext): Prepared launch
+                context.
+        """
+
+        if not launch_context.executable:
+            raise ApplicationExecutableNotFound(launch_context.application)
+        return launch_context.launch()
+
+    def launch(self, app_name, **data):
+        """Launch procedure.
+
+        For host application it's expected to contain "project_name",
+        "folder_path" and "task_name".
+
+        Args:
+            app_name (str): Name of application that should be launched.
+            **data (dict): Any additional data. Data may be used during
+                preparation to store objects usable in multiple places.
+
+        Raises:
+            ApplicationNotFound: Application was not found by entered
+                argument `app_name`.
+            ApplicationExecutableNotFound: Executables in application definition
+                were not found on this machine.
+            ApplicationLaunchFailed: Something important for application launch
+                failed. Exception should contain explanation message,
+                traceback should not be needed.
+        """
+
+        context = self.create_launch_context(app_name, **data)
+        return self.launch_with_context(context)
+
+
+class ApplicationLaunchContext:
+    """Context of launching application.
+
+    Main purpose of context is to prepare launch arguments and keyword
+    arguments for new process. Most important part of keyword arguments
+    preparations are environment variables.
+
+    During the whole process is possible to use `data` attribute to store
+    object usable in multiple places.
+
+    Launch arguments are strings in list. It is possible to "chain" argument
+    when order of them matters. That is possible to do with adding list where
+    order is right and should not change.
+    NOTE: This is recommendation, not requirement.
+    e.g.: `["nuke.exe", "--NukeX"]` -> In this case any part of process may
+    insert argument between `nuke.exe` and `--NukeX`. To keep them together
+    it is better to wrap them in another list: `[["nuke.exe", "--NukeX"]]`.
+
+    Notes:
+        It is possible to use launch context only to prepare environment
+            variables. In that case `executable` may be None and can be used
+            'run_prelaunch_hooks' method to run prelaunch hooks which prepare
+            them.
+
+    Args:
+        application (Application): Application definition.
+        executable (ApplicationExecutable): Object with path to executable.
+        env_group (Optional[str]): Environment variable group. If not set
+            'DEFAULT_ENV_SUBGROUP' is used.
+        launch_type (Optional[str]): Launch type. If not set 'local' is used.
+        **data (dict): Any additional data. Data may be used during
+            preparation to store objects usable in multiple places.
+    """
+
+    def __init__(
+        self,
+        application,
+        executable,
+        env_group=None,
+        launch_type=None,
+        **data
+    ):
+        # Application object
+        self.application = application
+
+        self.addons_manager = AddonsManager()
+
+        # Logger
+        logger_name = "{}-{}".format(self.__class__.__name__,
+                                     self.application.full_name)
+        self.log = Logger.get_logger(logger_name)
+
+        self.executable = executable
+
+        if launch_type is None:
+            launch_type = LaunchTypes.local
+        self.launch_type = launch_type
+
+        if env_group is None:
+            env_group = DEFAULT_ENV_SUBGROUP
+
+        self.env_group = env_group
+
+        self.data = dict(data)
+
+        launch_args = []
+        if executable is not None:
+            launch_args = executable.as_args()
+        # subprocess.Popen launch arguments (first argument in constructor)
+        self.launch_args = launch_args
+        self.launch_args.extend(application.arguments)
+        if self.data.get("app_args"):
+            self.launch_args.extend(self.data.pop("app_args"))
+
+        # Handle launch environemtns
+        src_env = self.data.pop("env", None)
+        if src_env is not None and not isinstance(src_env, dict):
+            self.log.warning((
+                "Passed `env` kwarg has invalid type: {}. Expected: `dict`."
+                " Using `os.environ` instead."
+            ).format(str(type(src_env))))
+            src_env = None
+
+        if src_env is None:
+            src_env = os.environ
+
+        ignored_env = {"QT_API", }
+        env = {
+            key: str(value)
+            for key, value in src_env.items()
+            if key not in ignored_env
+        }
+        # subprocess.Popen keyword arguments
+        self.kwargs = {"env": env}
+
+        if platform.system().lower() == "windows":
+            # Detach new process from currently running process on Windows
+            flags = (
+                subprocess.CREATE_NEW_PROCESS_GROUP
+                | subprocess.DETACHED_PROCESS
+            )
+            self.kwargs["creationflags"] = flags
+
+        if not sys.stdout:
+            self.kwargs["stdout"] = subprocess.DEVNULL
+            self.kwargs["stderr"] = subprocess.DEVNULL
+
+        self.prelaunch_hooks = None
+        self.postlaunch_hooks = None
+
+        self.process = None
+        self._prelaunch_hooks_executed = False
+
+    @property
+    def env(self):
+        if (
+            "env" not in self.kwargs
+            or self.kwargs["env"] is None
+        ):
+            self.kwargs["env"] = {}
+        return self.kwargs["env"]
+
+    @env.setter
+    def env(self, value):
+        if not isinstance(value, dict):
+            raise ValueError(
+                "'env' attribute expect 'dict' object. Got: {}".format(
+                    str(type(value))
+                )
+            )
+        self.kwargs["env"] = value
+
+    @property
+    def modules_manager(self):
+        """
+        Deprecated:
+            Use 'addons_manager' instead.
+
+        """
+        return self.addons_manager
+
+    def _collect_addons_launch_hook_paths(self):
+        """Helper to collect application launch hooks from addons.
+
+        Module have to have implemented 'get_launch_hook_paths' method which
+        can expect application as argument or nothing.
+
+        Returns:
+            List[str]: Paths to launch hook directories.
+        """
+
+        expected_types = (list, tuple, set)
+
+        output = []
+        for module in self.addons_manager.get_enabled_addons():
+            # Skip module if does not have implemented 'get_launch_hook_paths'
+            func = getattr(module, "get_launch_hook_paths", None)
+            if func is None:
+                continue
+
+            func = module.get_launch_hook_paths
+            if hasattr(inspect, "signature"):
+                sig = inspect.signature(func)
+                expect_args = len(sig.parameters) > 0
+            else:
+                expect_args = len(inspect.getargspec(func)[0]) > 0
+
+            # Pass application argument if method expect it.
+            try:
+                if expect_args:
+                    hook_paths = func(self.application)
+                else:
+                    hook_paths = func()
+            except Exception:
+                self.log.warning(
+                    "Failed to call 'get_launch_hook_paths'",
+                    exc_info=True
+                )
+                continue
+
+            if not hook_paths:
+                continue
+
+            # Convert string to list
+            if isinstance(hook_paths, six.string_types):
+                hook_paths = [hook_paths]
+
+            # Skip invalid types
+            if not isinstance(hook_paths, expected_types):
+                self.log.warning((
+                    "Result of `get_launch_hook_paths`"
+                    " has invalid type {}. Expected {}"
+                ).format(type(hook_paths), expected_types))
+                continue
+
+            output.extend(hook_paths)
+        return output
+
+    def paths_to_launch_hooks(self):
+        """Directory paths where to look for launch hooks."""
+        # This method has potential to be part of application manager (maybe).
+        paths = []
+
+        # TODO load additional studio paths from settings
+        global_hooks_dir = os.path.join(AYON_CORE_ROOT, "hooks")
+
+        hooks_dirs = [
+            global_hooks_dir
+        ]
+        if self.host_name:
+            # If host requires launch hooks and is module then launch hooks
+            #   should be collected using 'collect_launch_hook_paths'
+            #   - module have to implement 'get_launch_hook_paths'
+            host_module = self.addons_manager.get_host_addon(self.host_name)
+            if not host_module:
+                hooks_dirs.append(os.path.join(
+                    AYON_CORE_ROOT, "hosts", self.host_name, "hooks"
+                ))
+
+        for path in hooks_dirs:
+            if (
+                os.path.exists(path)
+                and os.path.isdir(path)
+                and path not in paths
+            ):
+                paths.append(path)
+
+        # Load modules paths
+        paths.extend(self._collect_addons_launch_hook_paths())
+
+        return paths
+
+    def discover_launch_hooks(self, force=False):
+        """Load and prepare launch hooks."""
+        if (
+            self.prelaunch_hooks is not None
+            or self.postlaunch_hooks is not None
+        ):
+            if not force:
+                self.log.info("Launch hooks were already discovered.")
+                return
+
+            self.prelaunch_hooks.clear()
+            self.postlaunch_hooks.clear()
+
+        self.log.debug("Discovery of launch hooks started.")
+
+        paths = self.paths_to_launch_hooks()
+        self.log.debug("Paths searched for launch hooks:\n{}".format(
+            "\n".join("- {}".format(path) for path in paths)
+        ))
+
+        all_classes = {
+            "pre": [],
+            "post": []
+        }
+        for path in paths:
+            if not os.path.exists(path):
+                self.log.info(
+                    "Path to launch hooks does not exist: \"{}\"".format(path)
+                )
+                continue
+
+            modules, _crashed = modules_from_path(path)
+            for _filepath, module in modules:
+                all_classes["pre"].extend(
+                    classes_from_module(PreLaunchHook, module)
+                )
+                all_classes["post"].extend(
+                    classes_from_module(PostLaunchHook, module)
+                )
+
+        for launch_type, classes in all_classes.items():
+            hooks_with_order = []
+            hooks_without_order = []
+            for klass in classes:
+                try:
+                    hook = klass(self)
+                    if not hook.is_valid:
+                        self.log.debug(
+                            "Skipped hook invalid for current launch context: "
+                            "{}".format(klass.__name__)
+                        )
+                        continue
+
+                    if inspect.isabstract(hook):
+                        self.log.debug("Skipped abstract hook: {}".format(
+                            klass.__name__
+                        ))
+                        continue
+
+                    # Separate hooks by pre/post class
+                    if hook.order is None:
+                        hooks_without_order.append(hook)
+                    else:
+                        hooks_with_order.append(hook)
+
+                except Exception:
+                    self.log.warning(
+                        "Initialization of hook failed: "
+                        "{}".format(klass.__name__),
+                        exc_info=True
+                    )
+
+            # Sort hooks with order by order
+            ordered_hooks = list(sorted(
+                hooks_with_order, key=lambda obj: obj.order
+            ))
+            # Extend ordered hooks with hooks without defined order
+            ordered_hooks.extend(hooks_without_order)
+
+            if launch_type == "pre":
+                self.prelaunch_hooks = ordered_hooks
+            else:
+                self.postlaunch_hooks = ordered_hooks
+
+        self.log.debug("Found {} prelaunch and {} postlaunch hooks.".format(
+            len(self.prelaunch_hooks), len(self.postlaunch_hooks)
+        ))
+
+    @property
+    def app_name(self):
+        return self.application.name
+
+    @property
+    def host_name(self):
+        return self.application.host_name
+
+    @property
+    def app_group(self):
+        return self.application.group
+
+    @property
+    def manager(self):
+        return self.application.manager
+
+    def _run_process(self):
+        # Windows and MacOS have easier process start
+        low_platform = platform.system().lower()
+        if low_platform in ("windows", "darwin"):
+            return subprocess.Popen(self.launch_args, **self.kwargs)
+
+        # Linux uses mid process
+        # - it is possible that the mid process executable is not
+        #   available for this version of AYON in that case use standard
+        #   launch
+        launch_args = get_linux_launcher_args()
+        if launch_args is None:
+            return subprocess.Popen(self.launch_args, **self.kwargs)
+
+        # Prepare data that will be passed to midprocess
+        # - store arguments to a json and pass path to json as last argument
+        # - pass environments to set
+        app_env = self.kwargs.pop("env", {})
+        json_data = {
+            "args": self.launch_args,
+            "env": app_env
+        }
+        if app_env:
+            # Filter environments of subprocess
+            self.kwargs["env"] = {
+                key: value
+                for key, value in os.environ.items()
+                if key in app_env
+            }
+
+        # Create temp file
+        json_temp = tempfile.NamedTemporaryFile(
+            mode="w", prefix="op_app_args", suffix=".json", delete=False
+        )
+        json_temp.close()
+        json_temp_filpath = json_temp.name
+        with open(json_temp_filpath, "w") as stream:
+            json.dump(json_data, stream)
+
+        launch_args.append(json_temp_filpath)
+
+        # Create mid-process which will launch application
+        process = subprocess.Popen(launch_args, **self.kwargs)
+        # Wait until the process finishes
+        #   - This is important! The process would stay in "open" state.
+        process.wait()
+        # Remove the temp file
+        os.remove(json_temp_filpath)
+        # Return process which is already terminated
+        return process
+
+    def run_prelaunch_hooks(self):
+        """Run prelaunch hooks.
+
+        This method will be executed only once, any future calls will skip
+            the processing.
+        """
+
+        if self._prelaunch_hooks_executed:
+            self.log.warning("Prelaunch hooks were already executed.")
+            return
+        # Discover launch hooks
+        self.discover_launch_hooks()
+
+        # Execute prelaunch hooks
+        for prelaunch_hook in self.prelaunch_hooks:
+            self.log.debug("Executing prelaunch hook: {}".format(
+                str(prelaunch_hook.__class__.__name__)
+            ))
+            prelaunch_hook.execute()
+        self._prelaunch_hooks_executed = True
+
+    def launch(self):
+        """Collect data for new process and then create it.
+
+        This method must not be executed more than once.
+
+        Returns:
+            subprocess.Popen: Created process as Popen object.
+        """
+        if self.process is not None:
+            self.log.warning("Application was already launched.")
+            return
+
+        if not self._prelaunch_hooks_executed:
+            self.run_prelaunch_hooks()
+
+        self.log.debug("All prelaunch hook executed. Starting new process.")
+
+        # Prepare subprocess args
+        args_len_str = ""
+        if isinstance(self.launch_args, str):
+            args = self.launch_args
+        else:
+            args = self.clear_launch_args(self.launch_args)
+            args_len_str = " ({})".format(len(args))
+        self.log.info(
+            "Launching \"{}\" with args{}: {}".format(
+                self.application.full_name, args_len_str, args
+            )
+        )
+        self.launch_args = args
+
+        # Run process
+        self.process = self._run_process()
+
+        # Process post launch hooks
+        for postlaunch_hook in self.postlaunch_hooks:
+            self.log.debug("Executing postlaunch hook: {}".format(
+                str(postlaunch_hook.__class__.__name__)
+            ))
+
+            # TODO how to handle errors?
+            # - store to variable to let them accessible?
+            try:
+                postlaunch_hook.execute()
+
+            except Exception:
+                self.log.warning(
+                    "After launch procedures were not successful.",
+                    exc_info=True
+                )
+
+        self.log.debug("Launch of {} finished.".format(
+            self.application.full_name
+        ))
+
+        return self.process
+
+    @staticmethod
+    def clear_launch_args(args):
+        """Collect launch arguments to final order.
+
+        Launch argument should be list that may contain another lists this
+        function will upack inner lists and keep ordering.
+
+        ```
+        # source
+        [ [ arg1, [ arg2, arg3 ] ], arg4, [arg5, arg6]]
+        # result
+        [ arg1, arg2, arg3, arg4, arg5, arg6]
+
+        Args:
+            args (list): Source arguments in list may contain inner lists.
+
+        Return:
+            list: Unpacked arguments.
+        """
+        if isinstance(args, str):
+            return args
+        all_cleared = False
+        while not all_cleared:
+            all_cleared = True
+            new_args = []
+            for arg in args:
+                if isinstance(arg, (list, tuple, set)):
+                    all_cleared = False
+                    for _arg in arg:
+                        new_args.append(_arg)
+                else:
+                    new_args.append(arg)
+            args = new_args
+
+        return args
+

client/ayon_core/addons/applications/ayon_applications/plugins/publish/collect_app_name.py

@@ -0,0 +1,48 @@
+"""
+Run after global plugin 'CollectHostName' in ayon_core.
+
+Requires:
+    None
+
+Provides:
+    context -> hostName (str)
+    context -> appName (str)
+    context -> appLabel (str)
+"""
+import os
+import pyblish.api
+
+from ayon_applications import ApplicationManager
+
+
+class CollectAppName(pyblish.api.ContextPlugin):
+    """Collect avalon host name to context."""
+
+    label = "Collect App Name"
+    order = pyblish.api.CollectorOrder - 0.499999
+
+    def process(self, context):
+        host_name = context.data.get("hostName")
+        app_name = context.data.get("appName")
+        app_label = context.data.get("appLabel")
+        # Don't override value if is already set
+        if host_name and app_name and app_label:
+            return
+
+        # Use AYON_APP_NAME to get full app name
+        if not app_name:
+            app_name = os.environ.get("AYON_APP_NAME")
+
+        # Fill missing values based on app full name
+        if (not host_name or not app_label) and app_name:
+            app_manager = ApplicationManager()
+            app = app_manager.applications.get(app_name)
+            if app:
+                if not host_name:
+                    host_name = app.host_name
+                if not app_label:
+                    app_label = app.full_label
+
+        context.data["hostName"] = host_name
+        context.data["appName"] = app_name
+        context.data["appLabel"] = app_label

client/ayon_core/addons/applications/ayon_applications/utils.py

@@ -0,0 +1,609 @@
+import os
+import copy
+import json
+import platform
+import collections
+
+import six
+import acre
+
+from ayon_core import AYON_CORE_ROOT
+from ayon_core.settings import get_project_settings
+from ayon_core.lib import Logger, get_ayon_username
+from ayon_core.addon import AddonsManager
+from ayon_core.pipeline import HOST_WORKFILE_EXTENSIONS
+from ayon_core.pipeline.template_data import get_template_data
+from ayon_core.pipeline.workfile import (
+    get_workfile_template_key,
+    get_workdir_with_workdir_data,
+    get_last_workfile,
+    should_use_last_workfile_on_launch,
+    should_open_workfiles_tool_on_launch,
+)
+
+from .constants import PLATFORM_NAMES, DEFAULT_ENV_SUBGROUP
+from .exceptions import MissingRequiredKey, ApplicationLaunchFailed
+from .manager import ApplicationManager
+
+
+def parse_environments(env_data, env_group=None, platform_name=None):
+    """Parse environment values from settings byt group and platform.
+
+    Data may contain up to 2 hierarchical levels of dictionaries. At the end
+    of the last level must be string or list. List is joined using platform
+    specific joiner (';' for windows and ':' for linux and mac).
+
+    Hierarchical levels can contain keys for subgroups and platform name.
+    Platform specific values must be always last level of dictionary. Platform
+    names are "windows" (MS Windows), "linux" (any linux distribution) and
+    "darwin" (any MacOS distribution).
+
+    Subgroups are helpers added mainly for standard and on farm usage. Farm
+    may require different environments for e.g. licence related values or
+    plugins. Default subgroup is "standard".
+
+    Examples:
+    ```
+    {
+        # Unchanged value
+        "ENV_KEY1": "value",
+        # Empty values are kept (unset environment variable)
+        "ENV_KEY2": "",
+
+        # Join list values with ':' or ';'
+        "ENV_KEY3": ["value1", "value2"],
+
+        # Environment groups
+        "ENV_KEY4": {
+            "standard": "DEMO_SERVER_URL",
+            "farm": "LICENCE_SERVER_URL"
+        },
+
+        # Platform specific (and only for windows and mac)
+        "ENV_KEY5": {
+            "windows": "windows value",
+            "darwin": ["value 1", "value 2"]
+        },
+
+        # Environment groups and platform combination
+        "ENV_KEY6": {
+            "farm": "FARM_VALUE",
+            "standard": {
+                "windows": ["value1", "value2"],
+                "linux": "value1",
+                "darwin": ""
+            }
+        }
+    }
+    ```
+    """
+    output = {}
+    if not env_data:
+        return output
+
+    if not env_group:
+        env_group = DEFAULT_ENV_SUBGROUP
+
+    if not platform_name:
+        platform_name = platform.system().lower()
+
+    for key, value in env_data.items():
+        if isinstance(value, dict):
+            # Look if any key is platform key
+            #   - expect that represents environment group if does not contain
+            #   platform keys
+            if not PLATFORM_NAMES.intersection(set(value.keys())):
+                # Skip the key if group is not available
+                if env_group not in value:
+                    continue
+                value = value[env_group]
+
+        # Check again if value is dictionary
+        #   - this time there should be only platform keys
+        if isinstance(value, dict):
+            value = value.get(platform_name)
+
+        # Check if value is list and join it's values
+        # QUESTION Should empty values be skipped?
+        if isinstance(value, (list, tuple)):
+            value = os.pathsep.join(value)
+
+        # Set key to output if value is string
+        if isinstance(value, six.string_types):
+            output[key] = value
+    return output
+
+
+class EnvironmentPrepData(dict):
+    """Helper dictionary for storin temp data during environment prep.
+
+    Args:
+        data (dict): Data must contain required keys.
+    """
+    required_keys = (
+        "project_entity", "folder_entity", "task_entity", "app", "anatomy"
+    )
+
+    def __init__(self, data):
+        for key in self.required_keys:
+            if key not in data:
+                raise MissingRequiredKey(key)
+
+        if not data.get("log"):
+            data["log"] = Logger.get_logger("EnvironmentPrepData")
+
+        if data.get("env") is None:
+            data["env"] = os.environ.copy()
+
+        project_name = data["project_entity"]["name"]
+        if "project_settings" not in data:
+            data["project_settings"] = get_project_settings(project_name)
+
+        super(EnvironmentPrepData, self).__init__(data)
+
+
+def get_app_environments_for_context(
+    project_name,
+    folder_path,
+    task_name,
+    app_name,
+    env_group=None,
+    launch_type=None,
+    env=None,
+    addons_manager=None
+):
+    """Prepare environment variables by context.
+    Args:
+        project_name (str): Name of project.
+        folder_path (str): Folder path.
+        task_name (str): Name of task.
+        app_name (str): Name of application that is launched and can be found
+            by ApplicationManager.
+        env_group (Optional[str]): Name of environment group. If not passed
+            default group is used.
+        launch_type (Optional[str]): Type for which prelaunch hooks are
+            executed.
+        env (Optional[dict[str, str]]): Initial environment variables.
+            `os.environ` is used when not passed.
+        addons_manager (Optional[AddonsManager]): Initialized modules
+            manager.
+
+    Returns:
+        dict: Environments for passed context and application.
+    """
+
+    # Prepare app object which can be obtained only from ApplicationManager
+    app_manager = ApplicationManager()
+    context = app_manager.create_launch_context(
+        app_name,
+        project_name=project_name,
+        folder_path=folder_path,
+        task_name=task_name,
+        env_group=env_group,
+        launch_type=launch_type,
+        env=env,
+        addons_manager=addons_manager,
+        modules_manager=addons_manager,
+    )
+    context.run_prelaunch_hooks()
+    return context.env
+
+
+def _merge_env(env, current_env):
+    """Modified function(merge) from acre module."""
+    result = current_env.copy()
+    for key, value in env.items():
+        # Keep missing keys by not filling `missing` kwarg
+        value = acre.lib.partial_format(value, data=current_env)
+        result[key] = value
+    return result
+
+
+def _add_python_version_paths(app, env, logger, addons_manager):
+    """Add vendor packages specific for a Python version."""
+
+    for addon in addons_manager.get_enabled_addons():
+        addon.modify_application_launch_arguments(app, env)
+
+    # Skip adding if host name is not set
+    if not app.host_name:
+        return
+
+    # Add Python 2/3 modules
+    python_vendor_dir = os.path.join(
+        AYON_CORE_ROOT,
+        "vendor",
+        "python"
+    )
+    if app.use_python_2:
+        pythonpath = os.path.join(python_vendor_dir, "python_2")
+    else:
+        pythonpath = os.path.join(python_vendor_dir, "python_3")
+
+    if not os.path.exists(pythonpath):
+        return
+
+    logger.debug("Adding Python version specific paths to PYTHONPATH")
+    python_paths = [pythonpath]
+
+    # Load PYTHONPATH from current launch context
+    python_path = env.get("PYTHONPATH")
+    if python_path:
+        python_paths.append(python_path)
+
+    # Set new PYTHONPATH to launch context environments
+    env["PYTHONPATH"] = os.pathsep.join(python_paths)
+
+
+def prepare_app_environments(
+    data, env_group=None, implementation_envs=True, addons_manager=None
+):
+    """Modify launch environments based on launched app and context.
+
+    Args:
+        data (EnvironmentPrepData): Dictionary where result and intermediate
+            result will be stored.
+
+    """
+    app = data["app"]
+    log = data["log"]
+    source_env = data["env"].copy()
+
+    if addons_manager is None:
+        addons_manager = AddonsManager()
+
+    _add_python_version_paths(app, source_env, log, addons_manager)
+
+    # Use environments from local settings
+    filtered_local_envs = {}
+    # NOTE Overrides for environment variables are not implemented in AYON.
+    # project_settings = data["project_settings"]
+    # whitelist_envs = project_settings["general"].get("local_env_white_list")
+    # if whitelist_envs:
+    #     local_settings = get_local_settings()
+    #     local_envs = local_settings.get("environments") or {}
+    #     filtered_local_envs = {
+    #         key: value
+    #         for key, value in local_envs.items()
+    #         if key in whitelist_envs
+    #     }
+
+    # Apply local environment variables for already existing values
+    for key, value in filtered_local_envs.items():
+        if key in source_env:
+            source_env[key] = value
+
+    # `app_and_tool_labels` has debug purpose
+    app_and_tool_labels = [app.full_name]
+    # Environments for application
+    environments = [
+        app.group.environment,
+        app.environment
+    ]
+
+    folder_entity = data.get("folder_entity")
+    # Add tools environments
+    groups_by_name = {}
+    tool_by_group_name = collections.defaultdict(dict)
+    if folder_entity:
+        # Make sure each tool group can be added only once
+        for key in folder_entity["attrib"].get("tools") or []:
+            tool = app.manager.tools.get(key)
+            if not tool or not tool.is_valid_for_app(app):
+                continue
+            groups_by_name[tool.group.name] = tool.group
+            tool_by_group_name[tool.group.name][tool.name] = tool
+
+        for group_name in sorted(groups_by_name.keys()):
+            group = groups_by_name[group_name]
+            environments.append(group.environment)
+            for tool_name in sorted(tool_by_group_name[group_name].keys()):
+                tool = tool_by_group_name[group_name][tool_name]
+                environments.append(tool.environment)
+                app_and_tool_labels.append(tool.full_name)
+
+    log.debug(
+        "Will add environments for apps and tools: {}".format(
+            ", ".join(app_and_tool_labels)
+        )
+    )
+
+    env_values = {}
+    for _env_values in environments:
+        if not _env_values:
+            continue
+
+        # Choose right platform
+        tool_env = parse_environments(_env_values, env_group)
+
+        # Apply local environment variables
+        # - must happen between all values because they may be used during
+        #   merge
+        for key, value in filtered_local_envs.items():
+            if key in tool_env:
+                tool_env[key] = value
+
+        # Merge dictionaries
+        env_values = _merge_env(tool_env, env_values)
+
+    merged_env = _merge_env(env_values, source_env)
+
+    loaded_env = acre.compute(merged_env, cleanup=False)
+
+    final_env = None
+    # Add host specific environments
+    if app.host_name and implementation_envs:
+        host_addon = addons_manager.get_host_addon(app.host_name)
+        add_implementation_envs = None
+        if host_addon:
+            add_implementation_envs = getattr(
+                host_addon, "add_implementation_envs", None
+            )
+        if add_implementation_envs:
+            # Function may only modify passed dict without returning value
+            final_env = add_implementation_envs(loaded_env, app)
+
+    if final_env is None:
+        final_env = loaded_env
+
+    keys_to_remove = set(source_env.keys()) - set(final_env.keys())
+
+    # Update env
+    data["env"].update(final_env)
+    for key in keys_to_remove:
+        data["env"].pop(key, None)
+
+
+def apply_project_environments_value(
+    project_name, env, project_settings=None, env_group=None
+):
+    """Apply project specific environments on passed environments.
+
+    The environments are applied on passed `env` argument value so it is not
+    required to apply changes back.
+
+    Args:
+        project_name (str): Name of project for which environments should be
+            received.
+        env (dict): Environment values on which project specific environments
+            will be applied.
+        project_settings (dict): Project settings for passed project name.
+            Optional if project settings are already prepared.
+
+    Returns:
+        dict: Passed env values with applied project environments.
+
+    Raises:
+        KeyError: If project settings do not contain keys for project specific
+            environments.
+
+    """
+    if project_settings is None:
+        project_settings = get_project_settings(project_name)
+
+    env_value = project_settings["core"]["project_environments"]
+    if env_value:
+        env_value = json.loads(env_value)
+        parsed_value = parse_environments(env_value, env_group)
+        env.update(acre.compute(
+            _merge_env(parsed_value, env),
+            cleanup=False
+        ))
+    return env
+
+
+def prepare_context_environments(data, env_group=None, addons_manager=None):
+    """Modify launch environments with context data for launched host.
+
+    Args:
+        data (EnvironmentPrepData): Dictionary where result and intermediate
+            result will be stored.
+
+    """
+    # Context environments
+    log = data["log"]
+
+    project_entity = data["project_entity"]
+    folder_entity = data["folder_entity"]
+    task_entity = data["task_entity"]
+    if not project_entity:
+        log.info(
+            "Skipping context environments preparation."
+            " Launch context does not contain required data."
+        )
+        return
+
+    # Load project specific environments
+    project_name = project_entity["name"]
+    project_settings = get_project_settings(project_name)
+    data["project_settings"] = project_settings
+
+    app = data["app"]
+    context_env = {
+        "AYON_PROJECT_NAME": project_entity["name"],
+        "AYON_APP_NAME": app.full_name
+    }
+    if folder_entity:
+        folder_path = folder_entity["path"]
+        context_env["AYON_FOLDER_PATH"] = folder_path
+
+        if task_entity:
+            context_env["AYON_TASK_NAME"] = task_entity["name"]
+
+    log.debug(
+        "Context environments set:\n{}".format(
+            json.dumps(context_env, indent=4)
+        )
+    )
+    data["env"].update(context_env)
+
+    # Apply project specific environments on current env value
+    # - apply them once the context environments are set
+    apply_project_environments_value(
+        project_name, data["env"], project_settings, env_group
+    )
+
+    if not app.is_host:
+        return
+
+    data["env"]["AYON_HOST_NAME"] = app.host_name
+
+    if not folder_entity or not task_entity:
+        # QUESTION replace with log.info and skip workfile discovery?
+        # - technically it should be possible to launch host without context
+        raise ApplicationLaunchFailed(
+            "Host launch require folder and task context."
+        )
+
+    workdir_data = get_template_data(
+        project_entity,
+        folder_entity,
+        task_entity,
+        app.host_name,
+        project_settings
+    )
+    data["workdir_data"] = workdir_data
+
+    anatomy = data["anatomy"]
+
+    task_type = workdir_data["task"]["type"]
+    # Temp solution how to pass task type to `_prepare_last_workfile`
+    data["task_type"] = task_type
+
+    try:
+        workdir = get_workdir_with_workdir_data(
+            workdir_data,
+            anatomy.project_name,
+            anatomy,
+            project_settings=project_settings
+        )
+
+    except Exception as exc:
+        raise ApplicationLaunchFailed(
+            "Error in anatomy.format: {}".format(str(exc))
+        )
+
+    if not os.path.exists(workdir):
+        log.debug(
+            "Creating workdir folder: \"{}\"".format(workdir)
+        )
+        try:
+            os.makedirs(workdir)
+        except Exception as exc:
+            raise ApplicationLaunchFailed(
+                "Couldn't create workdir because: {}".format(str(exc))
+            )
+
+    data["env"]["AYON_WORKDIR"] = workdir
+
+    _prepare_last_workfile(data, workdir, addons_manager)
+
+
+def _prepare_last_workfile(data, workdir, addons_manager):
+    """last workfile workflow preparation.
+
+    Function check if should care about last workfile workflow and tries
+    to find the last workfile. Both information are stored to `data` and
+    environments.
+
+    Last workfile is filled always (with version 1) even if any workfile
+    exists yet.
+
+    Args:
+        data (EnvironmentPrepData): Dictionary where result and intermediate
+            result will be stored.
+        workdir (str): Path to folder where workfiles should be stored.
+
+    """
+    if not addons_manager:
+        addons_manager = AddonsManager()
+
+    log = data["log"]
+
+    _workdir_data = data.get("workdir_data")
+    if not _workdir_data:
+        log.info(
+            "Skipping last workfile preparation."
+            " Key `workdir_data` not filled."
+        )
+        return
+
+    app = data["app"]
+    workdir_data = copy.deepcopy(_workdir_data)
+    project_name = data["project_name"]
+    task_name = data["task_name"]
+    task_type = data["task_type"]
+
+    start_last_workfile = data.get("start_last_workfile")
+    if start_last_workfile is None:
+        start_last_workfile = should_use_last_workfile_on_launch(
+            project_name, app.host_name, task_name, task_type
+        )
+    else:
+        log.info("Opening of last workfile was disabled by user")
+
+    data["start_last_workfile"] = start_last_workfile
+
+    workfile_startup = should_open_workfiles_tool_on_launch(
+        project_name, app.host_name, task_name, task_type
+    )
+    data["workfile_startup"] = workfile_startup
+
+    # Store boolean as "0"(False) or "1"(True)
+    data["env"]["AVALON_OPEN_LAST_WORKFILE"] = (
+        str(int(bool(start_last_workfile)))
+    )
+    data["env"]["AYON_WORKFILE_TOOL_ON_START"] = (
+        str(int(bool(workfile_startup)))
+    )
+
+    _sub_msg = "" if start_last_workfile else " not"
+    log.debug(
+        "Last workfile should{} be opened on start.".format(_sub_msg)
+    )
+
+    # Last workfile path
+    last_workfile_path = data.get("last_workfile_path") or ""
+    if not last_workfile_path:
+        host_addon = addons_manager.get_host_addon(app.host_name)
+        if host_addon:
+            extensions = host_addon.get_workfile_extensions()
+        else:
+            extensions = HOST_WORKFILE_EXTENSIONS.get(app.host_name)
+
+        if extensions:
+            anatomy = data["anatomy"]
+            project_settings = data["project_settings"]
+            task_type = workdir_data["task"]["type"]
+            template_key = get_workfile_template_key(
+                project_name,
+                task_type,
+                app.host_name,
+                project_settings=project_settings
+            )
+            # Find last workfile
+            file_template = anatomy.get_template_item(
+                "work", template_key, "file"
+            ).template
+
+            workdir_data.update({
+                "version": 1,
+                "user": get_ayon_username(),
+                "ext": extensions[0]
+            })
+
+            last_workfile_path = get_last_workfile(
+                workdir, file_template, workdir_data, extensions, True
+            )
+
+    if os.path.exists(last_workfile_path):
+        log.debug((
+            "Workfiles for launch context does not exists"
+            " yet but path will be set."
+        ))
+    log.debug(
+        "Setting last workfile path: {}".format(last_workfile_path)
+    )
+
+    data["env"]["AYON_LAST_WORKFILE"] = last_workfile_path
+    data["last_workfile_path"] = last_workfile_path

client/ayon_core/cli.py

@@ -96,6 +96,10 @@ def extractenvironments(output_json_path, project, asset, task, app, envgroup):
     environments will be extracted.
 
     Context options are "project", "asset", "task", "app"
+
+    Deprecated:
+        This function is deprecated and will be removed in future. Please use
+        'addon applications extractenvironments ...' instead.
     """
     Commands.extractenvironments(
         output_json_path, project, asset, task, app, envgroup

client/ayon_core/cli_commands.py

@@ -2,7 +2,7 @@
 """Implementation of AYON commands."""
 import os
 import sys
-import json
+import warnings
 
 
 class Commands:
@@ -57,10 +57,7 @@ class Commands:
 
         """
         from ayon_core.lib import Logger
-        from ayon_core.lib.applications import (
-            get_app_environments_for_context,
-            LaunchTypes,
-        )
+
         from ayon_core.addon import AddonsManager
         from ayon_core.pipeline import (
             install_ayon_plugins,
@@ -68,7 +65,6 @@ class Commands:
         )
 
         # Register target and host
-        import pyblish.api
         import pyblish.util
 
         if not isinstance(path, str):
@@ -99,15 +95,13 @@ class Commands:
         for plugin_path in publish_paths:
             pyblish.api.register_plugin_path(plugin_path)
 
-        app_full_name = os.getenv("AYON_APP_NAME")
-        if app_full_name:
+        applications_addon = manager.get_enabled_addon("applications")
+        if applications_addon is not None:
             context = get_global_context()
-            env = get_app_environments_for_context(
+            env = applications_addon.get_farm_publish_environment_variables(
                 context["project_name"],
                 context["folder_path"],
                 context["task_name"],
-                app_full_name,
-                launch_type=LaunchTypes.farm_publish,
             )
             os.environ.update(env)
 
@@ -149,36 +143,35 @@ class Commands:
         log.info("Publish finished.")
 
     @staticmethod
-    def extractenvironments(output_json_path, project, asset, task, app,
-                            env_group):
+    def extractenvironments(
+        output_json_path, project, asset, task, app, env_group
+    ):
         """Produces json file with environment based on project and app.
 
         Called by Deadline plugin to propagate environment into render jobs.
         """
 
-        from ayon_core.lib.applications import (
-            get_app_environments_for_context,
-            LaunchTypes,
+        from ayon_core.addon import AddonsManager
+
+        warnings.warn(
+            (
+                "Command 'extractenvironments' is deprecated and will be"
+                " removed in future. Please use "
+                "'addon applications extractenvironments ...' instead."
+            ),
+            DeprecationWarning
         )
-
-        if all((project, asset, task, app)):
-            env = get_app_environments_for_context(
-                project,
-                asset,
-                task,
-                app,
-                env_group=env_group,
-                launch_type=LaunchTypes.farm_render
+        addons_manager = AddonsManager()
+        applications_addon = addons_manager.get_enabled_addon("applications")
+        if applications_addon is None:
+            raise RuntimeError(
+                "Applications addon is not available or enabled."
             )
-        else:
-            env = os.environ.copy()
 
-        output_dir = os.path.dirname(output_json_path)
-        if not os.path.exists(output_dir):
-            os.makedirs(output_dir)
-
-        with open(output_json_path, "w") as file_stream:
-            json.dump(env, file_stream, indent=4)
+        # Please ignore the fact this is using private method
+        applications_addon._cli_extract_environments(
+            output_json_path, project, asset, task, app, env_group
+        )
 
     @staticmethod
     def contextselection(output_path, project_name, folder_path, strict):

client/ayon_core/hooks/pre_add_last_workfile_arg.py

@@ -1,6 +1,6 @@
 import os
 
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 
 
 class AddLastWorkfileToLaunchArgs(PreLaunchHook):

client/ayon_core/hooks/pre_copy_template_workfile.py

@@ -1,7 +1,7 @@
 import os
 import shutil
 from ayon_core.settings import get_project_settings
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 from ayon_core.pipeline.workfile import (
     get_custom_workfile_template,
     get_custom_workfile_template_by_string_context

client/ayon_core/hooks/pre_create_extra_workdir_folders.py

@@ -1,5 +1,5 @@
 import os
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 from ayon_core.pipeline.workfile import create_workdir_extra_folders
 
 

client/ayon_core/hooks/pre_global_host_data.py

@@ -1,7 +1,7 @@
 from ayon_api import get_project, get_folder_by_path, get_task_by_name
 
-from ayon_core.lib.applications import (
-    PreLaunchHook,
+from ayon_applications import PreLaunchHook
+from ayon_applications.utils import (
     EnvironmentPrepData,
     prepare_app_environments,
     prepare_context_environments

client/ayon_core/hooks/pre_mac_launch.py

@@ -1,5 +1,5 @@
 import os
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 
 
 class LaunchWithTerminal(PreLaunchHook):

client/ayon_core/hooks/pre_new_console_apps.py

@@ -1,5 +1,5 @@
 import subprocess
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 
 
 class LaunchNewConsoleApps(PreLaunchHook):

client/ayon_core/hooks/pre_ocio_hook.py

@@ -1,4 +1,4 @@
-from ayon_core.lib.applications import PreLaunchHook
+from ayon_applications import PreLaunchHook
 
 from ayon_core.pipeline.colorspace import get_imageio_config
 from ayon_core.pipeline.template_data import get_template_data_with_names

client/ayon_core/hosts/aftereffects/hooks/pre_launch_args.py

@@ -6,10 +6,7 @@ from ayon_core.lib import (
     get_ayon_launcher_args,
     is_using_ayon_console,
 )
-from ayon_core.lib.applications import (
-    PreLaunchHook,
-    LaunchTypes,
-)
+from ayon_applications import PreLaunchHook, LaunchTypes
 from ayon_core.hosts.aftereffects import get_launch_script_path
 
 

client/ayon_core/hosts/blender/hooks/pre_add_run_python_script_arg.py

@@ -1,6 +1,6 @@
 from pathlib import Path
 
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 
 
 class AddPythonScriptToLaunchArgs(PreLaunchHook):

client/ayon_core/hosts/blender/hooks/pre_pyside_install.py

@@ -2,7 +2,7 @@ import os
 import re
 import subprocess
 from platform import system
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 
 
 class InstallPySideToBlender(PreLaunchHook):

client/ayon_core/hosts/blender/hooks/pre_windows_console.py

@@ -1,5 +1,5 @@
 import subprocess
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 
 
 class BlenderConsoleWindows(PreLaunchHook):

client/ayon_core/hosts/blender/plugins/publish/validate_mesh_no_negative_scale.py

@@ -12,7 +12,7 @@ from ayon_core.pipeline.publish import (
 import ayon_core.hosts.blender.api.action
 
 
-class ValidateMeshNoNegativeScale(pyblish.api.Validator,
+class ValidateMeshNoNegativeScale(pyblish.api.InstancePlugin,
                                   OptionalPyblishPluginMixin):
     """Ensure that meshes don't have a negative scale."""
 

client/ayon_core/hosts/celaction/hooks/pre_celaction_setup.py

@@ -3,7 +3,7 @@ import shutil
 import winreg
 import subprocess
 from ayon_core.lib import get_ayon_launcher_args
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 from ayon_core.hosts.celaction import CELACTION_ROOT_DIR
 
 

client/ayon_core/hosts/celaction/plugins/publish/collect_celaction_cli_kwargs.py

@@ -3,11 +3,11 @@ import sys
 from pprint import pformat
 
 
-class CollectCelactionCliKwargs(pyblish.api.Collector):
+class CollectCelactionCliKwargs(pyblish.api.ContextPlugin):
     """ Collects all keyword arguments passed from the terminal """
 
     label = "Collect Celaction Cli Kwargs"
-    order = pyblish.api.Collector.order - 0.1
+    order = pyblish.api.CollectorOrder - 0.1
 
     def process(self, context):
         args = list(sys.argv[1:])

client/ayon_core/hosts/flame/hooks/pre_flame_setup.py

@@ -9,7 +9,7 @@ from ayon_core.lib import (
     get_ayon_username,
     run_subprocess,
 )
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 from ayon_core.hosts import flame as opflame
 
 

client/ayon_core/hosts/fusion/api/lib.py

@@ -5,6 +5,8 @@ import contextlib
 
 from ayon_core.lib import Logger
 
+from ayon_core.pipeline import registered_host
+from ayon_core.pipeline.create import CreateContext
 from ayon_core.pipeline.context_tools import get_current_project_folder
 
 self = sys.modules[__name__]
@@ -52,9 +54,15 @@ def update_frame_range(start, end, comp=None, set_render_range=True,
         comp.SetAttrs(attrs)
 
 
-def set_current_context_framerange():
+def set_current_context_framerange(folder_entity=None):
     """Set Comp's frame range based on current folder."""
-    folder_entity = get_current_project_folder()
+    if folder_entity is None:
+        folder_entity = get_current_project_folder(
+            fields={"attrib.frameStart",
+                    "attrib.frameEnd",
+                    "attrib.handleStart",
+                    "attrib.handleEnd"})
+
     folder_attributes = folder_entity["attrib"]
     start = folder_attributes["frameStart"]
     end = folder_attributes["frameEnd"]
@@ -65,9 +73,24 @@ def set_current_context_framerange():
                        handle_end=handle_end)
 
 
-def set_current_context_resolution():
+def set_current_context_fps(folder_entity=None):
+    """Set Comp's frame rate (FPS) to based on current asset"""
+    if folder_entity is None:
+        folder_entity = get_current_project_folder(fields={"attrib.fps"})
+
+    fps = float(folder_entity["attrib"].get("fps", 24.0))
+    comp = get_current_comp()
+    comp.SetPrefs({
+        "Comp.FrameFormat.Rate": fps,
+    })
+
+
+def set_current_context_resolution(folder_entity=None):
     """Set Comp's resolution width x height default based on current folder"""
-    folder_entity = get_current_project_folder()
+    if folder_entity is None:
+        folder_entity = get_current_project_folder(
+            fields={"attrib.resolutionWidth", "attrib.resolutionHeight"})
+
     folder_attributes = folder_entity["attrib"]
     width = folder_attributes["resolutionWidth"]
     height = folder_attributes["resolutionHeight"]
@@ -285,3 +308,98 @@ def comp_lock_and_undo_chunk(
     finally:
         comp.Unlock()
         comp.EndUndo(keep_undo)
+
+
+def update_content_on_context_change():
+    """Update all Creator instances to current asset"""
+    host = registered_host()
+    context = host.get_current_context()
+
+    folder_path = context["folder_path"]
+    task = context["task_name"]
+
+    create_context = CreateContext(host, reset=True)
+
+    for instance in create_context.instances:
+        instance_folder_path = instance.get("folderPath")
+        if instance_folder_path and instance_folder_path != folder_path:
+            instance["folderPath"] = folder_path
+        instance_task = instance.get("task")
+        if instance_task and instance_task != task:
+            instance["task"] = task
+
+    create_context.save_changes()
+
+
+def prompt_reset_context():
+    """Prompt the user what context settings to reset.
+    This prompt is used on saving to a different task to allow the scene to
+    get matched to the new context.
+    """
+    # TODO: Cleanup this prototyped mess of imports and odd dialog
+    from ayon_core.tools.attribute_defs.dialog import (
+        AttributeDefinitionsDialog
+    )
+    from ayon_core.style import load_stylesheet
+    from ayon_core.lib import BoolDef, UILabelDef
+    from qtpy import QtWidgets, QtCore
+
+    definitions = [
+        UILabelDef(
+            label=(
+                "You are saving your workfile into a different folder or task."
+                "\n\n"
+                "Would you like to update some settings to the new context?\n"
+            )
+        ),
+        BoolDef(
+            "fps", 
+            label="FPS", 
+            tooltip="Reset Comp FPS",
+            default=True
+        ),
+        BoolDef(
+            "frame_range", 
+            label="Frame Range",
+            tooltip="Reset Comp start and end frame ranges",
+            default=True
+        ),
+        BoolDef(
+            "resolution", 
+            label="Comp Resolution", 
+            tooltip="Reset Comp resolution",
+            default=True
+        ),
+        BoolDef(
+            "instances", 
+            label="Publish instances", 
+            tooltip="Update all publish instance's folder and task to match "
+                    "the new folder and task", 
+            default=True
+        ),
+    ]
+
+    dialog = AttributeDefinitionsDialog(definitions)
+    dialog.setWindowFlags(
+        dialog.windowFlags() | QtCore.Qt.WindowStaysOnTopHint
+    )
+    dialog.setWindowTitle("Saving to different context.")
+    dialog.setStyleSheet(load_stylesheet())
+    if not dialog.exec_():
+        return None
+
+    options = dialog.get_values()
+    folder_entity = get_current_project_folder()
+    if options["frame_range"]:
+        set_current_context_framerange(folder_entity)
+
+    if options["fps"]:
+        set_current_context_fps(folder_entity)
+
+    if options["resolution"]:
+        set_current_context_resolution(folder_entity)
+
+    if options["instances"]:
+        update_content_on_context_change()
+
+    dialog.deleteLater()

client/ayon_core/hosts/fusion/api/pipeline.py

@@ -5,6 +5,7 @@ import os
 import sys
 import logging
 import contextlib
+from pathlib import Path
 
 import pyblish.api
 from qtpy import QtCore
@@ -28,7 +29,8 @@ from ayon_core.tools.utils import host_tools
 
 from .lib import (
     get_current_comp,
-    validate_comp_prefs
+    validate_comp_prefs,
+    prompt_reset_context
 )
 
 log = Logger.get_logger(__name__)
@@ -40,6 +42,9 @@ LOAD_PATH = os.path.join(PLUGINS_DIR, "load")
 CREATE_PATH = os.path.join(PLUGINS_DIR, "create")
 INVENTORY_PATH = os.path.join(PLUGINS_DIR, "inventory")
 
+# Track whether the workfile tool is about to save
+_about_to_save = False
+
 
 class FusionLogHandler(logging.Handler):
     # Keep a reference to fusion's Print function (Remote Object)
@@ -103,8 +108,10 @@ class FusionHost(HostBase, IWorkfileHost, ILoadHost, IPublishHost):
 
         # Register events
         register_event_callback("open", on_after_open)
+        register_event_callback("workfile.save.before", before_workfile_save)
         register_event_callback("save", on_save)
         register_event_callback("new", on_new)
+        register_event_callback("taskChanged", on_task_changed)
 
     # region workfile io api
     def has_unsaved_changes(self):
@@ -168,6 +175,19 @@ def on_save(event):
     comp = event["sender"]
     validate_comp_prefs(comp)
 
+    # We are now starting the actual save directly
+    global _about_to_save
+    _about_to_save = False
+
+
+def on_task_changed():
+    global _about_to_save
+    print(f"Task changed: {_about_to_save}")
+    # TODO: Only do this if not headless
+    if _about_to_save:
+        # Let's prompt the user to update the context settings or not
+        prompt_reset_context()
+
 
 def on_after_open(event):
     comp = event["sender"]
@@ -201,6 +221,28 @@ def on_after_open(event):
         dialog.setStyleSheet(load_stylesheet())
 
 
+def before_workfile_save(event):
+    # Due to Fusion's external python process design we can't really
+    # detect whether the current Fusion environment matches the one the artists
+    # expects it to be. For example, our pipeline python process might
+    # have been shut down, and restarted - which will restart it to the
+    # environment Fusion started with; not necessarily where the artist
+    # is currently working.
+    # The `_about_to_save` var is used to detect context changes when
+    # saving into another asset. If we keep it False it will be ignored
+    # as context change. As such, before we change tasks we will only
+    # consider it the current filepath is within the currently known
+    # AVALON_WORKDIR. This way we avoid false positives of thinking it's
+    # saving to another context and instead sometimes just have false negatives
+    # where we fail to show the "Update on task change" prompt.
+    comp = get_current_comp()
+    filepath = comp.GetAttrs()["COMPS_FileName"]
+    workdir = os.environ.get("AYON_WORKDIR")
+    if Path(workdir) in Path(filepath).parents:
+        global _about_to_save
+        _about_to_save = True
+
+
 def ls():
     """List containers from active Fusion scene
 
@@ -337,7 +379,6 @@ class FusionEventHandler(QtCore.QObject):
         >>> handler = FusionEventHandler(parent=window)
         >>> handler.start()
 
-
     """
     ACTION_IDS = [
         "Comp_Save",

client/ayon_core/hosts/fusion/hooks/pre_fusion_profile_hook.py

@@ -7,7 +7,7 @@ from ayon_core.hosts.fusion import (
     FUSION_VERSIONS_DICT,
     get_fusion_version,
 )
-from ayon_core.lib.applications import (
+from ayon_applications import (
     PreLaunchHook,
     LaunchTypes,
     ApplicationLaunchFailed,

client/ayon_core/hosts/fusion/hooks/pre_fusion_setup.py

@@ -1,5 +1,5 @@
 import os
-from ayon_core.lib.applications import (
+from ayon_applications import (
     PreLaunchHook,
     LaunchTypes,
     ApplicationLaunchFailed,

client/ayon_core/hosts/fusion/hooks/pre_pyside_install.py

@@ -3,7 +3,7 @@ import subprocess
 import platform
 import uuid
 
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 
 
 class InstallPySideToFusion(PreLaunchHook):

client/ayon_core/hosts/harmony/hooks/pre_launch_args.py

@@ -6,10 +6,7 @@ from ayon_core.lib import (
     get_ayon_launcher_args,
     is_using_ayon_console,
 )
-from ayon_core.lib.applications import (
-    PreLaunchHook,
-    LaunchTypes,
-)
+from ayon_applications import PreLaunchHook, LaunchTypes
 from ayon_core.hosts.harmony import get_launch_script_path
 
 

client/ayon_core/hosts/houdini/api/creator_node_shelves.py

@@ -91,7 +91,7 @@ def create_interactive(creator_identifier, **kwargs):
     pane = stateutils.activePane(kwargs)
     if isinstance(pane, hou.NetworkEditor):
         pwd = pane.pwd()
-        project_name = context.get_current_project_name(),
+        project_name = context.get_current_project_name()
         folder_path = context.get_current_folder_path()
         task_name = context.get_current_task_name()
         folder_entity = ayon_api.get_folder_by_path(

client/ayon_core/hosts/houdini/api/lib.py

@@ -243,7 +243,10 @@ def render_rop(ropnode):
     try:
         ropnode.render(verbose=verbose,
                        # Allow Deadline to capture completion percentage
-                       output_progress=verbose)
+                       output_progress=verbose,
+                       # Render only this node
+                       # (do not render any of its dependencies)
+                       ignore_inputs=True)
     except hou.Error as exc:
         # The hou.Error is not inherited from a Python Exception class,
         # so we explicitly capture the houdini error, otherwise pyblish
@@ -948,7 +951,7 @@ def self_publish():
 
     Firstly, it gets the node and its dependencies.
     Then, it deactivates all other ROPs
-    And finaly, it triggers the publishing action.
+    And finally, it triggers the publishing action.
     """
 
     result, comment = hou.ui.readInput(
@@ -1076,4 +1079,4 @@ def prompt_reset_context():
     if options["instances"]:
         update_content_on_context_change()
 
-    dialog.deleteLater()
+    dialog.deleteLater()

client/ayon_core/hosts/houdini/api/pipeline.py

@@ -39,7 +39,7 @@ CREATE_PATH = os.path.join(PLUGINS_DIR, "create")
 INVENTORY_PATH = os.path.join(PLUGINS_DIR, "inventory")
 
 # Track whether the workfile tool is about to save
-ABOUT_TO_SAVE = False
+_about_to_save = False
 
 
 class HoudiniHost(HostBase, IWorkfileHost, ILoadHost, IPublishHost):
@@ -292,8 +292,8 @@ def ls():
 
 
 def before_workfile_save(event):
-    global ABOUT_TO_SAVE
-    ABOUT_TO_SAVE = True
+    global _about_to_save
+    _about_to_save = True
 
 
 def before_save():
@@ -307,18 +307,14 @@ def on_save():
     # update houdini vars
     lib.update_houdini_vars_context_dialog()
 
-    nodes = lib.get_id_required_nodes()
-    for node, new_id in lib.generate_ids(nodes):
-        lib.set_id(node, new_id, overwrite=False)
-
     # We are now starting the actual save directly
-    global ABOUT_TO_SAVE
-    ABOUT_TO_SAVE = False
+    global _about_to_save
+    _about_to_save = False
 
 
 def on_task_changed():
-    global ABOUT_TO_SAVE
-    if not IS_HEADLESS and ABOUT_TO_SAVE:
+    global _about_to_save
+    if not IS_HEADLESS and _about_to_save:
         # Let's prompt the user to update the context settings or not
         lib.prompt_reset_context()
 

client/ayon_core/hosts/houdini/hooks/set_paths.py

@@ -1,4 +1,4 @@
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 
 
 class SetPath(PreLaunchHook):

client/ayon_core/hosts/max/hooks/force_startup_script.py

@@ -2,7 +2,7 @@
 """Pre-launch to force 3ds max startup script."""
 import os
 from ayon_core.hosts.max import MAX_HOST_DIR
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 
 
 class ForceStartupScript(PreLaunchHook):

client/ayon_core/hosts/max/hooks/inject_python.py

@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 """Pre-launch hook to inject python environment."""
 import os
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 
 
 class InjectPythonPath(PreLaunchHook):

client/ayon_core/hosts/max/hooks/set_paths.py

@@ -1,4 +1,4 @@
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 
 
 class SetPath(PreLaunchHook):

client/ayon_core/hosts/maya/api/action.py

@@ -4,7 +4,10 @@ from __future__ import absolute_import
 import pyblish.api
 import ayon_api
 
-from ayon_core.pipeline.publish import get_errored_instances_from_context
+from ayon_core.pipeline.publish import (
+    get_errored_instances_from_context,
+    get_errored_plugins_from_context
+)
 
 
 class GenerateUUIDsOnInvalidAction(pyblish.api.Action):
@@ -112,20 +115,25 @@ class SelectInvalidAction(pyblish.api.Action):
         except ImportError:
             raise ImportError("Current host is not Maya")
 
-        errored_instances = get_errored_instances_from_context(context,
-                                                               plugin=plugin)
-
         # Get the invalid nodes for the plug-ins
         self.log.info("Finding invalid nodes..")
         invalid = list()
-        for instance in errored_instances:
-            invalid_nodes = plugin.get_invalid(instance)
-            if invalid_nodes:
-                if isinstance(invalid_nodes, (list, tuple)):
-                    invalid.extend(invalid_nodes)
-                else:
-                    self.log.warning("Plug-in returned to be invalid, "
-                                     "but has no selectable nodes.")
+        if issubclass(plugin, pyblish.api.ContextPlugin):
+            errored_plugins = get_errored_plugins_from_context(context)
+            if plugin in errored_plugins:
+                invalid = plugin.get_invalid(context)
+        else:
+            errored_instances = get_errored_instances_from_context(
+                context, plugin=plugin
+            )
+            for instance in errored_instances:
+                invalid_nodes = plugin.get_invalid(instance)
+                if invalid_nodes:
+                    if isinstance(invalid_nodes, (list, tuple)):
+                        invalid.extend(invalid_nodes)
+                    else:
+                        self.log.warning("Plug-in returned to be invalid, "
+                                         "but has no selectable nodes.")
 
         # Ensure unique (process each node only once)
         invalid = list(set(invalid))

client/ayon_core/hosts/maya/api/customize.py

@@ -113,7 +113,9 @@ def override_toolbox_ui():
             annotation="Look Manager",
             label="Look Manager",
             image=os.path.join(icons, "lookmanager.png"),
-            command=show_look_assigner,
+            command=lambda: show_look_assigner(
+                parent=parent_widget
+            ),
             width=icon_size,
             height=icon_size,
             parent=parent

client/ayon_core/hosts/maya/api/lib.py

@@ -1876,18 +1876,9 @@ def list_looks(project_name, folder_id):
         list[dict[str, Any]]: List of look products.
 
     """
-    # # get all products with look leading in
-    # the name associated with the asset
-    # TODO this should probably look for product type 'look' instead of
-    #   checking product name that can not start with product type
-    product_entities = ayon_api.get_products(
-        project_name, folder_ids=[folder_id]
-    )
-    return [
-        product_entity
-        for product_entity in product_entities
-        if product_entity["name"].startswith("look")
-    ]
+    return list(ayon_api.get_products(
+        project_name, folder_ids=[folder_id], product_types={"look"}
+    ))
 
 
 def assign_look_by_version(nodes, version_id):
@@ -1906,12 +1897,15 @@ def assign_look_by_version(nodes, version_id):
     project_name = get_current_project_name()
 
     # Get representations of shader file and relationships
-    look_representation = ayon_api.get_representation_by_name(
-        project_name, "ma", version_id
-    )
-    json_representation = ayon_api.get_representation_by_name(
-        project_name, "json", version_id
-    )
+    representations = list(ayon_api.get_representations(
+        project_name=project_name,
+        representation_names={"ma", "json"},
+        version_ids=[version_id]
+    ))
+    look_representation = next(
+        repre for repre in representations if repre["name"] == "ma")
+    json_representation = next(
+        repre for repre in representations if repre["name"] == "json")
 
     # See if representation is already loaded, if so reuse it.
     host = registered_host()
@@ -1948,7 +1942,7 @@ def assign_look_by_version(nodes, version_id):
     apply_shaders(relationships, shader_nodes, nodes)
 
 
-def assign_look(nodes, product_name="lookDefault"):
+def assign_look(nodes, product_name="lookMain"):
     """Assigns a look to a node.
 
     Optimizes the nodes by grouping by folder id and finding
@@ -1981,14 +1975,10 @@ def assign_look(nodes, product_name="lookDefault"):
         product_entity["id"]
         for product_entity in product_entities_by_folder_id.values()
     }
-    last_version_entities = ayon_api.get_last_versions(
+    last_version_entities_by_product_id = ayon_api.get_last_versions(
         project_name,
         product_ids
     )
-    last_version_entities_by_product_id = {
-        last_version_entity["productId"]: last_version_entity
-        for last_version_entity in last_version_entities
-    }
 
     for folder_id, asset_nodes in grouped.items():
         product_entity = product_entities_by_folder_id.get(folder_id)
@@ -2651,31 +2641,114 @@ def reset_scene_resolution():
     set_scene_resolution(width, height, pixelAspect)
 
 
-def set_context_settings():
+def set_context_settings(
+        fps=True,
+        resolution=True,
+        frame_range=True,
+        colorspace=True
+):
     """Apply the project settings from the project definition
 
-    Settings can be overwritten by an folder if the folder.attrib contains
+    Settings can be overwritten by an asset if the asset.data contains
     any information regarding those settings.
 
-    Examples of settings:
-        fps
-        resolution
-        renderer
+    Args:
+        fps (bool): Whether to set the scene FPS.
+        resolution (bool): Whether to set the render resolution.
+        frame_range (bool): Whether to reset the time slide frame ranges.
+        colorspace (bool): Whether to reset the colorspace.
 
     Returns:
         None
 
     """
-    # Set project fps
-    set_scene_fps(get_fps_for_current_context())
+    if fps:
+        # Set project fps
+        set_scene_fps(get_fps_for_current_context())
 
-    reset_scene_resolution()
+    if resolution:
+        reset_scene_resolution()
 
     # Set frame range.
-    reset_frame_range()
+    if frame_range:
+        reset_frame_range(fps=False)
 
     # Set colorspace
-    set_colorspace()
+    if colorspace:
+        set_colorspace()
+
+
+def prompt_reset_context():
+    """Prompt the user what context settings to reset.
+    This prompt is used on saving to a different task to allow the scene to
+    get matched to the new context.
+    """
+    # TODO: Cleanup this prototyped mess of imports and odd dialog
+    from ayon_core.tools.attribute_defs.dialog import (
+        AttributeDefinitionsDialog
+    )
+    from ayon_core.style import load_stylesheet
+    from ayon_core.lib import BoolDef, UILabelDef
+
+    definitions = [
+        UILabelDef(
+            label=(
+                "You are saving your workfile into a different folder or task."
+                "\n\n"
+                "Would you like to update some settings to the new context?\n"
+            )
+        ),
+        BoolDef(
+            "fps",
+            label="FPS",
+            tooltip="Reset workfile FPS",
+            default=True
+        ),
+        BoolDef(
+            "frame_range",
+            label="Frame Range",
+            tooltip="Reset workfile start and end frame ranges",
+            default=True
+        ),
+        BoolDef(
+            "resolution",
+            label="Resolution",
+            tooltip="Reset workfile resolution",
+            default=True
+        ),
+        BoolDef(
+            "colorspace",
+            label="Colorspace",
+            tooltip="Reset workfile resolution",
+            default=True
+        ),
+        BoolDef(
+            "instances",
+            label="Publish instances",
+            tooltip="Update all publish instance's folder and task to match "
+                    "the new folder and task",
+            default=True
+        ),
+    ]
+
+    dialog = AttributeDefinitionsDialog(definitions)
+    dialog.setWindowTitle("Saving to different context.")
+    dialog.setStyleSheet(load_stylesheet())
+    if not dialog.exec_():
+        return None
+
+    options = dialog.get_values()
+    with suspended_refresh():
+        set_context_settings(
+            fps=options["fps"],
+            resolution=options["resolution"],
+            frame_range=options["frame_range"],
+            colorspace=options["colorspace"]
+        )
+        if options["instances"]:
+            update_content_on_context_change()
+
+    dialog.deleteLater()
 
 
 # Valid FPS

client/ayon_core/hosts/maya/api/pipeline.py

@@ -67,6 +67,9 @@ INVENTORY_PATH = os.path.join(PLUGINS_DIR, "inventory")
 
 AVALON_CONTAINERS = ":AVALON_CONTAINERS"
 
+# Track whether the workfile tool is about to save
+_about_to_save = False
+
 
 class MayaHost(HostBase, IWorkfileHost, ILoadHost, IPublishHost):
     name = "maya"
@@ -581,6 +584,10 @@ def on_save():
     for node, new_id in lib.generate_ids(nodes):
         lib.set_id(node, new_id, overwrite=False)
 
+    # We are now starting the actual save directly
+    global _about_to_save
+    _about_to_save = False
+
 
 def on_open():
     """On scene open let's assume the containers have changed."""
@@ -650,6 +657,11 @@ def on_task_changed():
         lib.set_context_settings()
         lib.update_content_on_context_change()
 
+    global _about_to_save
+    if not lib.IS_HEADLESS and _about_to_save:
+        # Let's prompt the user to update the context settings or not
+        lib.prompt_reset_context()
+
 
 def before_workfile_open():
     if handle_workfile_locks():
@@ -664,6 +676,9 @@ def before_workfile_save(event):
     if workdir_path:
         create_workspace_mel(workdir_path, project_name)
 
+    global _about_to_save
+    _about_to_save = True
+
 
 def workfile_save_before_xgen(event):
     """Manage Xgen external files when switching context.

client/ayon_core/hosts/maya/hooks/pre_auto_load_plugins.py

@@ -1,4 +1,4 @@
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 
 
 class MayaPreAutoLoadPlugins(PreLaunchHook):

client/ayon_core/hosts/maya/hooks/pre_copy_mel.py

@@ -1,4 +1,4 @@
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 from ayon_core.hosts.maya.lib import create_workspace_mel
 
 

client/ayon_core/hosts/maya/hooks/pre_open_workfile_post_initialization.py

@@ -1,4 +1,4 @@
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 
 
 class MayaPreOpenWorkfilePostInitialization(PreLaunchHook):

client/ayon_core/hosts/maya/plugins/load/load_image_plane.py

@@ -142,9 +142,21 @@ class ImagePlaneLoader(load.LoaderPlugin):
         with namespaced(namespace):
             # Create inside the namespace
             image_plane_transform, image_plane_shape = cmds.imagePlane(
-                fileName=context["representation"]["data"]["path"],
+                fileName=self.filepath_from_context(context),
                 camera=camera
             )
+
+        # Set colorspace
+        colorspace = self.get_colorspace(context["representation"])
+        if colorspace:
+            cmds.setAttr(
+                "{}.ignoreColorSpaceFileRules".format(image_plane_shape),
+                True
+            )
+            cmds.setAttr("{}.colorSpace".format(image_plane_shape),
+                         colorspace, type="string")
+
+        # Set offset frame range
         start_frame = cmds.playbackOptions(query=True, min=True)
         end_frame = cmds.playbackOptions(query=True, max=True)
 
@@ -216,6 +228,15 @@ class ImagePlaneLoader(load.LoaderPlugin):
                      repre_entity["id"],
                      type="string")
 
+        colorspace = self.get_colorspace(repre_entity)
+        if colorspace:
+            cmds.setAttr(
+                "{}.ignoreColorSpaceFileRules".format(image_plane_shape),
+                True
+            )
+            cmds.setAttr("{}.colorSpace".format(image_plane_shape),
+                         colorspace, type="string")
+
         # Set frame range.
         start_frame = folder_entity["attrib"]["frameStart"]
         end_frame = folder_entity["attrib"]["frameEnd"]
@@ -243,3 +264,12 @@ class ImagePlaneLoader(load.LoaderPlugin):
                            deleteNamespaceContent=True)
         except RuntimeError:
             pass
+
+    def get_colorspace(self, representation):
+
+        data = representation.get("data", {}).get("colorspaceData", {})
+        if not data:
+            return
+
+        colorspace = data.get("colorspace")
+        return colorspace

client/ayon_core/hosts/maya/plugins/publish/collect_render.py

@@ -1,24 +1,19 @@
 # -*- coding: utf-8 -*-
 """Collect render data.
 
-This collector will go through render layers in maya and prepare all data
-needed to create instances and their representations for submission and
-publishing on farm.
+This collector will go through renderlayer instances and prepare all data
+needed to detect the expected rendered files for a layer, with resolution,
+frame ranges and collects the data needed for publishing on the farm.
 
 Requires:
     instance    -> families
-    instance    -> setMembers
-    instance    -> folderPath
 
     context     -> currentFile
-    context     -> workspaceDir
     context     -> user
 
-Optional:
-
 Provides:
     instance    -> label
-    instance    -> productName
+    instance    -> subset
     instance    -> attachTo
     instance    -> setMembers
     instance    -> publish
@@ -26,6 +21,8 @@ Provides:
     instance    -> frameEnd
     instance    -> byFrameStep
     instance    -> renderer
+    instance    -> family
+    instance    -> asset
     instance    -> time
     instance    -> author
     instance    -> source
@@ -71,8 +68,6 @@ class CollectMayaRender(pyblish.api.InstancePlugin):
 
         # TODO: Re-add force enable of workfile instance?
         # TODO: Re-add legacy layer support with LAYER_ prefix but in Creator
-        # TODO: Set and collect active state of RenderLayer in Creator using
-        #       renderlayer.isRenderable()
         context = instance.context
 
         layer = instance.data["transientData"]["layer"]
@@ -112,7 +107,13 @@ class CollectMayaRender(pyblish.api.InstancePlugin):
         except UnsupportedRendererException as exc:
             raise KnownPublishError(exc)
         render_products = layer_render_products.layer_data.products
-        assert render_products, "no render products generated"
+        if not render_products:
+            self.log.error(
+                "No render products generated for '%s'. You might not have "
+                "any render camera in the renderlayer or render end frame is "
+                "lower than start frame.",
+                instance.name
+            )
         expected_files = []
         multipart = False
         for product in render_products:
@@ -130,16 +131,21 @@ class CollectMayaRender(pyblish.api.InstancePlugin):
                 })
 
         has_cameras = any(product.camera for product in render_products)
-        assert has_cameras, "No render cameras found."
-
-        self.log.debug("multipart: {}".format(
-            multipart))
-        assert expected_files, "no file names were generated, this is a bug"
-        self.log.debug(
-            "expected files: {}".format(
-                json.dumps(expected_files, indent=4, sort_keys=True)
+        if render_products and not has_cameras:
+            self.log.error(
+                "No render cameras found for: %s",
+                instance
             )
-        )
+        if not expected_files:
+            self.log.warning(
+                "No file names were generated, this is a bug.")
+
+        for render_product in render_products:
+            self.log.debug(render_product)
+        self.log.debug("multipart: {}".format(multipart))
+        self.log.debug("expected files: {}".format(
+            json.dumps(expected_files, indent=4, sort_keys=True)
+        ))
 
         # if we want to attach render to product, check if we have AOV's
         # in expectedFiles. If so, raise error as we cannot attach AOV
@@ -151,14 +157,14 @@ class CollectMayaRender(pyblish.api.InstancePlugin):
             )
 
         # append full path
-        aov_dict = {}
         image_directory = os.path.join(
             cmds.workspace(query=True, rootDirectory=True),
             cmds.workspace(fileRuleEntry="images")
         )
         # replace relative paths with absolute. Render products are
         # returned as list of dictionaries.
-        publish_meta_path = None
+        publish_meta_path = "NOT-SET"
+        aov_dict = {}
         for aov in expected_files:
             full_paths = []
             aov_first_key = list(aov.keys())[0]
@@ -169,14 +175,6 @@ class CollectMayaRender(pyblish.api.InstancePlugin):
                 publish_meta_path = os.path.dirname(full_path)
             aov_dict[aov_first_key] = full_paths
         full_exp_files = [aov_dict]
-        self.log.debug(full_exp_files)
-
-        if publish_meta_path is None:
-            raise KnownPublishError("Unable to detect any expected output "
-                                    "images for: {}. Make sure you have a "
-                                    "renderable camera and a valid frame "
-                                    "range set for your renderlayer."
-                                    "".format(instance.name))
 
         frame_start_render = int(self.get_render_attribute(
             "startFrame", layer=layer_name))
@@ -222,7 +220,8 @@ class CollectMayaRender(pyblish.api.InstancePlugin):
             common_publish_meta_path = "/" + common_publish_meta_path
 
         self.log.debug(
-            "Publish meta path: {}".format(common_publish_meta_path))
+            "Publish meta path: {}".format(common_publish_meta_path)
+        )
 
         # Get layer specific settings, might be overrides
         colorspace_data = lib.get_color_management_preferences()

client/ayon_core/hosts/maya/plugins/publish/extract_gpu_cache.py

@@ -5,7 +5,8 @@ from maya import cmds
 from ayon_core.pipeline import publish
 
 
-class ExtractGPUCache(publish.Extractor):
+class ExtractGPUCache(publish.Extractor,
+                      publish.OptionalPyblishPluginMixin):
     """Extract the content of the instance to a GPU cache file."""
 
     label = "GPU Cache"
@@ -20,6 +21,9 @@ class ExtractGPUCache(publish.Extractor):
     useBaseTessellation = True
 
     def process(self, instance):
+        if not self.is_active(instance.data):
+            return
+
         cmds.loadPlugin("gpuCache", quiet=True)
 
         staging_dir = self.staging_dir(instance)

client/ayon_core/hosts/maya/plugins/publish/help/validate_animation_out_set_related_node_ids.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<root>
+<error id="main">
+<title>Shape IDs mismatch original shape</title>
+<description>## Shapes mismatch IDs with original shape
+
+Meshes are detected where the (deformed) mesh has a different `cbId` than
+the same mesh in its deformation history.
+Theses should normally be the same.
+
+### How to repair?
+
+By using the repair action the IDs from the shape in history will be
+copied to the deformed shape. For **animation** instances using the
+repair action usually is usually the correct fix.
+
+</description>
+<detail>
+### How does this happen?
+
+When a deformer is applied in the scene on a referenced mesh that had no
+deformers then Maya will create a new shape node for the mesh that
+does not have the original id. Then on scene save new ids get created for the
+meshes lacking a `cbId` and thus the mesh then has a different `cbId` than
+the mesh in the deformation history.
+
+</detail>
+</error>
+</root>

client/ayon_core/hosts/maya/plugins/publish/help/validate_mesh_non_manifold.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<root>
+<error id="main">
+<title>Non-Manifold Edges/Vertices</title>
+<description>## Non-Manifold Edges/Vertices
+
+Meshes found with non-manifold edges or vertices.
+
+### How to repair?
+
+Run select invalid to select the invalid components.
+
+You can also try the _cleanup matching polygons_ action which will perform a
+cleanup like Maya's `Mesh > Cleanup...` modeling tool.
+
+It is recommended to always select the invalid to see where the issue is
+because if you run any repair on it you will need to double check the topology
+is still like you wanted.
+
+</description>
+<detail>
+### What is non-manifold topology?
+
+_Non-manifold topology_ polygons have a configuration that cannot be unfolded
+into a continuous flat piece, for example:
+
+- Three or more faces share an edge
+- Two or more faces share a single vertex but no edge.
+- Adjacent faces have opposite normals
+
+</detail>
+</error>
+</root>

client/ayon_core/hosts/maya/plugins/publish/validate_animation_out_set_related_node_ids.py

@@ -6,7 +6,7 @@ from ayon_core.hosts.maya.api import lib
 from ayon_core.pipeline.publish import (
     RepairAction,
     ValidateContentsOrder,
-    PublishValidationError,
+    PublishXmlValidationError,
     OptionalPyblishPluginMixin,
     get_plugin_settings,
     apply_plugin_settings_automatically
@@ -56,40 +56,39 @@ class ValidateOutRelatedNodeIds(pyblish.api.InstancePlugin,
         # if a deformer has been created on the shape
         invalid = self.get_invalid(instance)
         if invalid:
-            # TODO: Message formatting can be improved
-            raise PublishValidationError("Nodes found with mismatching "
-                                         "IDs: {0}".format(invalid),
-                                         title="Invalid node ids")
+
+            # Use the short names
+            invalid = cmds.ls(invalid)
+            invalid.sort()
+
+            # Construct a human-readable list
+            invalid = "\n".join("- {}".format(node) for node in invalid)
+
+            raise PublishXmlValidationError(
+                plugin=self,
+                message=(
+                    "Nodes have different IDs than their input "
+                    "history: \n{0}".format(invalid)
+                )
+            )
 
     @classmethod
     def get_invalid(cls, instance):
         """Get all nodes which do not match the criteria"""
 
         invalid = []
-        types_to_skip = ["locator"]
+        types = ["mesh", "nurbsCurve", "nurbsSurface"]
 
         # get asset id
         nodes = instance.data.get("out_hierarchy", instance[:])
-        for node in nodes:
+        for node in cmds.ls(nodes, type=types, long=True):
 
             # We only check when the node is *not* referenced
             if cmds.referenceQuery(node, isNodeReferenced=True):
                 continue
 
-            # Check if node is a shape as deformers only work on shapes
-            obj_type = cmds.objectType(node, isAType="shape")
-            if not obj_type:
-                continue
-
-            # Skip specific types
-            if cmds.objectType(node) in types_to_skip:
-                continue
-
             # Get the current id of the node
             node_id = lib.get_id(node)
-            if not node_id:
-                invalid.append(node)
-                continue
 
             history_id = lib.get_id_from_sibling(node)
             if history_id is not None and node_id != history_id:

client/ayon_core/hosts/maya/plugins/publish/validate_color_sets.py

@@ -10,7 +10,7 @@ from ayon_core.pipeline.publish import (
 )
 
 
-class ValidateColorSets(pyblish.api.Validator,
+class ValidateColorSets(pyblish.api.InstancePlugin,
                         OptionalPyblishPluginMixin):
     """Validate all meshes in the instance have unlocked normals
 

client/ayon_core/hosts/maya/plugins/publish/validate_look_shading_group.py

@@ -47,10 +47,18 @@ class ValidateShadingEngine(pyblish.api.InstancePlugin,
                 shape, destination=True, type="shadingEngine"
             ) or []
             for shading_engine in shading_engines:
-                name = (
-                    cmds.listConnections(shading_engine + ".surfaceShader")[0]
-                    + "SG"
+                materials = cmds.listConnections(
+                    shading_engine + ".surfaceShader",
+                    source=True, destination=False
                 )
+                if not materials:
+                    cls.log.warning(
+                        "Shading engine '{}' has no material connected to its "
+                        ".surfaceShader attribute.".format(shading_engine))
+                    continue
+
+                material = materials[0]  # there should only ever be one input
+                name = material + "SG"
                 if shading_engine != name:
                     invalid.append(shading_engine)
 

client/ayon_core/hosts/maya/plugins/publish/validate_mesh_ngons.py

@@ -10,7 +10,7 @@ from ayon_core.pipeline.publish import (
 )
 
 
-class ValidateMeshNgons(pyblish.api.Validator,
+class ValidateMeshNgons(pyblish.api.InstancePlugin,
                         OptionalPyblishPluginMixin):
     """Ensure that meshes don't have ngons
 

client/ayon_core/hosts/maya/plugins/publish/validate_mesh_no_negative_scale.py

@@ -16,7 +16,7 @@ def _as_report_list(values, prefix="- ", suffix="\n"):
     return prefix + (suffix + prefix).join(values)
 
 
-class ValidateMeshNoNegativeScale(pyblish.api.Validator,
+class ValidateMeshNoNegativeScale(pyblish.api.InstancePlugin,
                                   OptionalPyblishPluginMixin):
     """Ensure that meshes don't have a negative scale.
 

client/ayon_core/hosts/maya/plugins/publish/validate_mesh_non_manifold.py

@@ -1,14 +1,99 @@
-from maya import cmds
+from maya import cmds, mel
 
 import pyblish.api
 import ayon_core.hosts.maya.api.action
 from ayon_core.pipeline.publish import (
     ValidateMeshOrder,
-    PublishValidationError,
+    PublishXmlValidationError,
+    RepairAction,
     OptionalPyblishPluginMixin
 )
 
 
+def poly_cleanup(version=4,
+                 meshes=None,
+                 # Version 1
+                 all_meshes=False,
+                 select_only=False,
+                 history_on=True,
+                 quads=False,
+                 nsided=False,
+                 concave=False,
+                 holed=False,
+                 nonplanar=False,
+                 zeroGeom=False,
+                 zeroGeomTolerance=1e-05,
+                 zeroEdge=False,
+                 zeroEdgeTolerance=1e-05,
+                 zeroMap=False,
+                 zeroMapTolerance=1e-05,
+                 # Version 2
+                 shared_uvs=False,
+                 non_manifold=False,
+                 # Version 3
+                 lamina=False,
+                 # Version 4
+                 invalid_components=False):
+    """Wrapper around `polyCleanupArgList` mel command"""
+
+    # Get all inputs named as `dict` to easily do conversions and formatting
+    values = locals()
+
+    # Convert booleans to 1 or 0
+    for key in [
+        "all_meshes",
+        "select_only",
+        "history_on",
+        "quads",
+        "nsided",
+        "concave",
+        "holed",
+        "nonplanar",
+        "zeroGeom",
+        "zeroEdge",
+        "zeroMap",
+        "shared_uvs",
+        "non_manifold",
+        "lamina",
+        "invalid_components",
+    ]:
+        values[key] = 1 if values[key] else 0
+
+    cmd = (
+        'polyCleanupArgList {version} {{ '
+        '"{all_meshes}",'           # 0: All selectable meshes
+        '"{select_only}",'          # 1: Only perform a selection
+        '"{history_on}",'           # 2: Keep construction history
+        '"{quads}",'                # 3: Check for quads polys
+        '"{nsided}",'               # 4: Check for n-sides polys
+        '"{concave}",'              # 5: Check for concave polys
+        '"{holed}",'                # 6: Check for holed polys
+        '"{nonplanar}",'            # 7: Check for non-planar polys
+        '"{zeroGeom}",'             # 8: Check for 0 area faces
+        '"{zeroGeomTolerance}",'    # 9: Tolerance for face areas
+        '"{zeroEdge}",'             # 10: Check for 0 length edges
+        '"{zeroEdgeTolerance}",'    # 11: Tolerance for edge length
+        '"{zeroMap}",'              # 12: Check for 0 uv face area
+        '"{zeroMapTolerance}",'     # 13: Tolerance for uv face areas
+        '"{shared_uvs}",'           # 14: Unshare uvs that are shared
+                                    #     across vertices
+        '"{non_manifold}",'         # 15: Check for nonmanifold polys
+        '"{lamina}",'               # 16: Check for lamina polys
+        '"{invalid_components}"'    # 17: Remove invalid components
+        ' }};'.format(**values)
+    )
+
+    mel.eval("source polyCleanupArgList")
+    if not all_meshes and meshes:
+        # Allow to specify meshes to run over by selecting them
+        cmds.select(meshes, replace=True)
+    mel.eval(cmd)
+
+
+class CleanupMatchingPolygons(RepairAction):
+    label = "Cleanup matching polygons"
+
+
 def _as_report_list(values, prefix="- ", suffix="\n"):
     """Return list as bullet point list for a report"""
     if not values:
@@ -16,7 +101,7 @@ def _as_report_list(values, prefix="- ", suffix="\n"):
     return prefix + (suffix + prefix).join(values)
 
 
-class ValidateMeshNonManifold(pyblish.api.Validator,
+class ValidateMeshNonManifold(pyblish.api.InstancePlugin,
                               OptionalPyblishPluginMixin):
     """Ensure that meshes don't have non-manifold edges or vertices
 
@@ -29,7 +114,8 @@ class ValidateMeshNonManifold(pyblish.api.Validator,
     hosts = ['maya']
     families = ['model']
     label = 'Mesh Non-Manifold Edges/Vertices'
-    actions = [ayon_core.hosts.maya.api.action.SelectInvalidAction]
+    actions = [ayon_core.hosts.maya.api.action.SelectInvalidAction,
+               CleanupMatchingPolygons]
     optional = True
 
     @staticmethod
@@ -39,9 +125,11 @@ class ValidateMeshNonManifold(pyblish.api.Validator,
 
         invalid = []
         for mesh in meshes:
-            if (cmds.polyInfo(mesh, nonManifoldVertices=True) or
-                    cmds.polyInfo(mesh, nonManifoldEdges=True)):
-                invalid.append(mesh)
+            components = cmds.polyInfo(mesh,
+                                       nonManifoldVertices=True,
+                                       nonManifoldEdges=True)
+            if components:
+                invalid.extend(components)
 
         return invalid
 
@@ -49,12 +137,34 @@ class ValidateMeshNonManifold(pyblish.api.Validator,
         """Process all the nodes in the instance 'objectSet'"""
         if not self.is_active(instance.data):
             return
+
         invalid = self.get_invalid(instance)
 
         if invalid:
-            raise PublishValidationError(
-                "Meshes found with non-manifold edges/vertices:\n\n{0}".format(
-                    _as_report_list(sorted(invalid))
-                ),
-                title="Non-Manifold Edges/Vertices"
+            # Report only the meshes instead of all component indices
+            invalid_meshes = {
+                component.split(".", 1)[0] for component in invalid
+            }
+            invalid_meshes = _as_report_list(sorted(invalid_meshes))
+
+            raise PublishXmlValidationError(
+                plugin=self,
+                message=(
+                    "Meshes found with non-manifold "
+                    "edges/vertices:\n\n{0}".format(invalid_meshes)
+                )
             )
+
+    @classmethod
+    def repair(cls, instance):
+        invalid_components = cls.get_invalid(instance)
+        if not invalid_components:
+            cls.log.info("No invalid components found to cleanup.")
+            return
+
+        invalid_meshes = {
+            component.split(".", 1)[0] for component in invalid_components
+        }
+        poly_cleanup(meshes=list(invalid_meshes),
+                     select_only=True,
+                     non_manifold=True)

client/ayon_core/hosts/maya/plugins/publish/validate_mesh_normals_unlocked.py

@@ -18,7 +18,7 @@ def _as_report_list(values, prefix="- ", suffix="\n"):
     return prefix + (suffix + prefix).join(values)
 
 
-class ValidateMeshNormalsUnlocked(pyblish.api.Validator,
+class ValidateMeshNormalsUnlocked(pyblish.api.InstancePlugin,
                                   OptionalPyblishPluginMixin):
     """Validate all meshes in the instance have unlocked normals
 

client/ayon_core/hosts/maya/plugins/publish/validate_no_animation.py

@@ -16,7 +16,7 @@ def _as_report_list(values, prefix="- ", suffix="\n"):
     return prefix + (suffix + prefix).join(values)
 
 
-class ValidateNoAnimation(pyblish.api.Validator,
+class ValidateNoAnimation(pyblish.api.InstancePlugin,
                           OptionalPyblishPluginMixin):
     """Ensure no keyframes on nodes in the Instance.
 

client/ayon_core/hosts/maya/plugins/publish/validate_no_null_transforms.py

@@ -19,22 +19,17 @@ def _as_report_list(values, prefix="- ", suffix="\n"):
 
 def has_shape_children(node):
     # Check if any descendants
-    allDescendents = cmds.listRelatives(node,
-                                        allDescendents=True,
-                                        fullPath=True)
-    if not allDescendents:
+    all_descendents = cmds.listRelatives(node,
+                                         allDescendents=True,
+                                         fullPath=True)
+    if not all_descendents:
         return False
 
     # Check if there are any shapes at all
-    shapes = cmds.ls(allDescendents, shapes=True)
+    shapes = cmds.ls(all_descendents, shapes=True, noIntermediate=True)
     if not shapes:
         return False
 
-    # Check if all descendent shapes are intermediateObjects;
-    # if so we consider this node a null node and return False.
-    if all(cmds.getAttr('{0}.intermediateObject'.format(x)) for x in shapes):
-        return False
-
     return True
 
 

client/ayon_core/hosts/maya/plugins/publish/validate_render_single_camera.py

@@ -1,4 +1,5 @@
 import re
+import inspect
 
 import pyblish.api
 from maya import cmds
@@ -36,7 +37,10 @@ class ValidateRenderSingleCamera(pyblish.api.InstancePlugin,
             return
         invalid = self.get_invalid(instance)
         if invalid:
-            raise PublishValidationError("Invalid cameras for render.")
+            raise PublishValidationError(
+                "Invalid render cameras.",
+                description=self.get_description()
+            )
 
     @classmethod
     def get_invalid(cls, instance):
@@ -51,17 +55,30 @@ class ValidateRenderSingleCamera(pyblish.api.InstancePlugin,
             RenderSettings.get_image_prefix_attr(renderer)
         )
 
-
+        renderlayer = instance.data["renderlayer"]
         if len(cameras) > 1:
             if re.search(cls.R_CAMERA_TOKEN, file_prefix):
                 # if there is <Camera> token in prefix and we have more then
                 # 1 camera, all is ok.
                 return
-            cls.log.error("Multiple renderable cameras found for %s: %s " %
-                          (instance.data["setMembers"], cameras))
-            return [instance.data["setMembers"]] + cameras
+            cls.log.error(
+                "Multiple renderable cameras found for %s: %s ",
+                renderlayer, ", ".join(cameras))
+            return [renderlayer] + cameras
 
         elif len(cameras) < 1:
-            cls.log.error("No renderable cameras found for %s " %
-                          instance.data["setMembers"])
-            return [instance.data["setMembers"]]
+            cls.log.error("No renderable cameras found for %s ", renderlayer)
+            return [renderlayer]
+
+    def get_description(self):
+        return inspect.cleandoc(
+            """### Render Cameras Invalid
+
+            Your render cameras are misconfigured. You may have no render
+            camera set or have multiple cameras with a render filename
+            prefix that does not include the `<Camera>` token.
+            
+            See the logs for more details about the cameras.
+            
+            """
+        )

client/ayon_core/hosts/maya/plugins/publish/validate_shape_render_stats.py

@@ -6,11 +6,12 @@ import ayon_core.hosts.maya.api.action
 from ayon_core.pipeline.publish import (
     RepairAction,
     ValidateMeshOrder,
+    PublishValidationError,
     OptionalPyblishPluginMixin
 )
 
 
-class ValidateShapeRenderStats(pyblish.api.Validator,
+class ValidateShapeRenderStats(pyblish.api.InstancePlugin,
                                OptionalPyblishPluginMixin):
     """Ensure all render stats are set to the default values."""
 
@@ -20,7 +21,6 @@ class ValidateShapeRenderStats(pyblish.api.Validator,
     label = 'Shape Default Render Stats'
     actions = [ayon_core.hosts.maya.api.action.SelectInvalidAction,
                RepairAction]
-    optional = True
 
     defaults = {'castsShadows': 1,
                 'receiveShadows': 1,
@@ -37,14 +37,13 @@ class ValidateShapeRenderStats(pyblish.api.Validator,
         # It seems the "surfaceShape" and those derived from it have
         # `renderStat` attributes.
         shapes = cmds.ls(instance, long=True, type='surfaceShape')
-        invalid = []
+        invalid = set()
         for shape in shapes:
-            _iteritems = getattr(cls.defaults, "iteritems", cls.defaults.items)
-            for attr, default_value in _iteritems():
+            for attr, default_value in cls.defaults.items():
                 if cmds.attributeQuery(attr, node=shape, exists=True):
                     value = cmds.getAttr('{}.{}'.format(shape, attr))
                     if value != default_value:
-                        invalid.append(shape)
+                        invalid.add(shape)
 
         return invalid
 
@@ -52,17 +51,36 @@ class ValidateShapeRenderStats(pyblish.api.Validator,
         if not self.is_active(instance.data):
             return
         invalid = self.get_invalid(instance)
+        if not invalid:
+            return
 
-        if invalid:
-            raise ValueError("Shapes with non-default renderStats "
-                             "found: {0}".format(invalid))
+        defaults_str = "\n".join(
+            "- {}: {}\n".format(key, value)
+            for key, value in self.defaults.items()
+        )
+        description = (
+            "## Shape Default Render Stats\n"
+            "Shapes are detected with non-default render stats.\n\n"
+            "To ensure a model's shapes behave like a shape would by default "
+            "we require the render stats to have not been altered in "
+            "the published models.\n\n"
+            "### How to repair?\n"
+            "You can reset the default values on the shapes by using the "
+            "repair action."
+        )
+
+        raise PublishValidationError(
+            "Shapes with non-default renderStats "
+            "found: {0}".format(", ".join(sorted(invalid))),
+            description=description,
+            detail="The expected default values "
+                   "are:\n\n{}".format(defaults_str)
+        )
 
     @classmethod
     def repair(cls, instance):
         for shape in cls.get_invalid(instance):
-            _iteritems = getattr(cls.defaults, "iteritems", cls.defaults.items)
-            for attr, default_value in _iteritems():
-
+            for attr, default_value in cls.defaults.items():
                 if cmds.attributeQuery(attr, node=shape, exists=True):
                     plug = '{0}.{1}'.format(shape, attr)
                     value = cmds.getAttr(plug)

client/ayon_core/hosts/maya/plugins/publish/validate_shape_zero.py

@@ -12,7 +12,7 @@ from ayon_core.pipeline.publish import (
 )
 
 
-class ValidateShapeZero(pyblish.api.Validator,
+class ValidateShapeZero(pyblish.api.InstancePlugin,
                         OptionalPyblishPluginMixin):
     """Shape components may not have any "tweak" values
 

client/ayon_core/hosts/maya/plugins/publish/validate_transform_zero.py

@@ -1,5 +1,6 @@
-from maya import cmds
+import inspect
 
+from maya import cmds
 import pyblish.api
 
 import ayon_core.hosts.maya.api.action
@@ -10,7 +11,7 @@ from ayon_core.pipeline.publish import (
 )
 
 
-class ValidateTransformZero(pyblish.api.Validator,
+class ValidateTransformZero(pyblish.api.InstancePlugin,
                             OptionalPyblishPluginMixin):
     """Transforms can't have any values
 
@@ -57,7 +58,7 @@ class ValidateTransformZero(pyblish.api.Validator,
             if ('_LOC' in transform) or ('_loc' in transform):
                 continue
             mat = cmds.xform(transform, q=1, matrix=True, objectSpace=True)
-            if not all(abs(x-y) < cls._tolerance
+            if not all(abs(x - y) < cls._tolerance
                        for x, y in zip(cls._identity, mat)):
                 invalid.append(transform)
 
@@ -69,14 +70,24 @@ class ValidateTransformZero(pyblish.api.Validator,
             return
         invalid = self.get_invalid(instance)
         if invalid:
-
             names = "<br>".join(
                 " - {}".format(node) for node in invalid
             )
 
             raise PublishValidationError(
                 title="Transform Zero",
+                description=self.get_description(),
                 message="The model publish allows no transformations. You must"
                         " <b>freeze transformations</b> to continue.<br><br>"
-                        "Nodes found with transform values: "
+                        "Nodes found with transform values:<br>"
                         "{0}".format(names))
+
+    @staticmethod
+    def get_description():
+        return inspect.cleandoc("""### Transform can't have any values
+
+        The model publish allows no transformations. 
+
+        You must **freeze transformations** to continue.
+
+        """)

client/ayon_core/hosts/maya/plugins/publish/validate_unique_names.py

@@ -9,7 +9,7 @@ from ayon_core.pipeline.publish import (
 )
 
 
-class ValidateUniqueNames(pyblish.api.Validator,
+class ValidateUniqueNames(pyblish.api.InstancePlugin,
                           OptionalPyblishPluginMixin):
     """transform names should be unique
 

client/ayon_core/hosts/maya/plugins/publish/validate_yeti_rig_input_in_instance.py

@@ -10,7 +10,7 @@ from ayon_core.pipeline.publish import (
 )
 
 
-class ValidateYetiRigInputShapesInInstance(pyblish.api.Validator,
+class ValidateYetiRigInputShapesInInstance(pyblish.api.InstancePlugin,
                                            OptionalPyblishPluginMixin):
     """Validate if all input nodes are part of the instance's hierarchy"""
 

client/ayon_core/hosts/maya/tools/mayalookassigner/vray_proxies.py

@@ -51,7 +51,7 @@ def assign_vrayproxy_shaders(vrayproxy, assignments):
             index += 1
 
 
-def vrayproxy_assign_look(vrayproxy, product_name="lookDefault"):
+def vrayproxy_assign_look(vrayproxy, product_name="lookMain"):
     # type: (str, str) -> None
     """Assign look to vray proxy.
 

client/ayon_core/hosts/nuke/hooks/pre_nukeassist_setup.py

@@ -1,4 +1,4 @@
-from ayon_core.lib.applications import PreLaunchHook
+from ayon_applications import PreLaunchHook
 
 
 class PrelaunchNukeAssistHook(PreLaunchHook):

client/ayon_core/hosts/nuke/plugins/publish/extract_script_save.py

@@ -2,10 +2,10 @@ import nuke
 import pyblish.api
 
 
-class ExtractScriptSave(pyblish.api.Extractor):
+class ExtractScriptSave(pyblish.api.InstancePlugin):
     """Save current Nuke workfile script"""
     label = 'Script Save'
-    order = pyblish.api.Extractor.order - 0.1
+    order = pyblish.api.ExtractorOrder - 0.1
     hosts = ['nuke']
 
     def process(self, instance):

client/ayon_core/hosts/photoshop/hooks/pre_launch_args.py

@@ -6,10 +6,7 @@ from ayon_core.lib import (
     get_ayon_launcher_args,
     is_using_ayon_console,
 )
-from ayon_core.lib.applications import (
-    PreLaunchHook,
-    LaunchTypes,
-)
+from ayon_applications import PreLaunchHook, LaunchTypes
 from ayon_core.hosts.photoshop import get_launch_script_path
 
 

client/ayon_core/hosts/resolve/hooks/pre_resolve_last_workfile.py

@@ -1,5 +1,5 @@
 import os
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 
 
 class PreLaunchResolveLastWorkfile(PreLaunchHook):

client/ayon_core/hosts/resolve/hooks/pre_resolve_setup.py

@@ -1,7 +1,7 @@
 import os
 from pathlib import Path
 import platform
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 from ayon_core.hosts.resolve.utils import setup
 
 

client/ayon_core/hosts/resolve/hooks/pre_resolve_startup.py

@@ -1,6 +1,6 @@
 import os
 
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 import ayon_core.hosts.resolve
 
 

client/ayon_core/hosts/substancepainter/plugins/load/load_mesh.py

@@ -18,7 +18,7 @@ class SubstanceLoadProjectMesh(load.LoaderPlugin):
     """Load mesh for project"""
 
     product_types = {"*"}
-    representations = ["abc", "fbx", "obj", "gltf"]
+    representations = ["abc", "fbx", "obj", "gltf", "usd", "usda", "usdc"]
 
     label = "Load mesh"
     order = -10

client/ayon_core/hosts/tvpaint/hooks/pre_launch_args.py

@@ -1,5 +1,5 @@
 from ayon_core.lib import get_ayon_launcher_args
-from ayon_core.lib.applications import PreLaunchHook, LaunchTypes
+from ayon_applications import PreLaunchHook, LaunchTypes
 
 
 class TvpaintPrelaunchHook(PreLaunchHook):

client/ayon_core/hosts/tvpaint/plugins/publish/extract_sequence.py

@@ -25,8 +25,9 @@ from ayon_core.hosts.tvpaint.lib import (
 )
 
 
-class ExtractSequence(pyblish.api.Extractor):
+class ExtractSequence(pyblish.api.InstancePlugin):
     label = "Extract Sequence"
+    order = pyblish.api.ExtractorOrder
     hosts = ["tvpaint"]
     families = ["review", "render"]
 

client/ayon_core/hosts/unreal/hooks/pre_workfile_preparation.py

@@ -9,7 +9,7 @@ from pathlib import Path
 from qtpy import QtCore
 
 from ayon_core import resources
-from ayon_core.lib.applications import (
+from ayon_applications import (
     PreLaunchHook,
     ApplicationLaunchFailed,
     LaunchTypes,

client/ayon_core/lib/__init__.py

@@ -120,22 +120,6 @@ from .transcoding import (
     get_rescaled_command_arguments,
 )
 
-from .applications import (
-    ApplicationLaunchFailed,
-    ApplictionExecutableNotFound,
-    ApplicationNotFound,
-    ApplicationManager,
-
-    PreLaunchHook,
-    PostLaunchHook,
-
-    EnvironmentPrepData,
-    prepare_app_environments,
-    prepare_context_environments,
-    get_app_environments_for_context,
-    apply_project_environments_value
-)
-
 from .plugin_tools import (
     prepare_template_data,
     source_hash,
@@ -231,18 +215,6 @@ __all__ = [
     "convert_ffprobe_fps_to_float",
     "get_rescaled_command_arguments",
 
-    "ApplicationLaunchFailed",
-    "ApplictionExecutableNotFound",
-    "ApplicationNotFound",
-    "ApplicationManager",
-    "PreLaunchHook",
-    "PostLaunchHook",
-    "EnvironmentPrepData",
-    "prepare_app_environments",
-    "prepare_context_environments",
-    "get_app_environments_for_context",
-    "apply_project_environments_value",
-
     "compile_list_of_regexes",
 
     "filter_profiles",

client/ayon_core/lib/terminal.py

@@ -1,15 +1,5 @@
 # -*- coding: utf-8 -*-
 """Package helping with colorizing and formatting terminal output."""
-# ::
-#   //.  ...   ..      ///.     //.
-#  ///\\\ \\\   \\    ///\\\   ///
-# ///  \\  \\\   \\  ///  \\  /// //
-# \\\  //   \\\  //  \\\  //  \\\//  ./
-#  \\\//     \\\//    \\\//    \\\' //
-#   \\\         \\\    \\\      \\\//
-#    '''         '''    '''      '''
-#   ..---===[[ PyP3 Setup ]]===---...
-#
 import re
 import time
 import threading

client/ayon_core/lib/transcoding.py

@@ -45,7 +45,7 @@ ARRAY_TYPE_REGEX = re.compile(r"^(int|float|string)\[\d+\]$")
 
 IMAGE_EXTENSIONS = {
     ".ani", ".anim", ".apng", ".art", ".bmp", ".bpg", ".bsave",
-    ".cal", ".cin", ".cpc", ".cpt", ".dds", ".dpx", ".ecw", ".exr",
+    ".cal", ".cin", ".cpc", ".cpt", ".dds", ".dng", ".dpx", ".ecw", ".exr",
     ".fits", ".flic", ".flif", ".fpx", ".gif", ".hdri", ".hevc",
     ".icer", ".icns", ".ico", ".cur", ".ics", ".ilbm", ".jbig", ".jbig2",
     ".jng", ".jpeg", ".jpeg-ls", ".jpeg-hdr", ".2000", ".jpg",

client/ayon_core/modules/clockify/launcher_actions/ClockifyStart.py

@@ -11,19 +11,17 @@ class ClockifyStart(LauncherAction):
     order = 500
     clockify_api = ClockifyAPI()
 
-    def is_compatible(self, session):
+    def is_compatible(self, selection):
         """Return whether the action is compatible with the session"""
-        if "AYON_TASK_NAME" in session:
-            return True
-        return False
+        return selection.is_task_selected
 
-    def process(self, session, **kwargs):
+    def process(self, selection, **kwargs):
         self.clockify_api.set_api()
         user_id = self.clockify_api.user_id
         workspace_id = self.clockify_api.workspace_id
-        project_name = session["AYON_PROJECT_NAME"]
-        folder_path = session["AYON_FOLDER_PATH"]
-        task_name = session["AYON_TASK_NAME"]
+        project_name = selection.project_name
+        folder_path = selection.folder_path
+        task_name = selection.task_name
         description = "/".join([folder_path.lstrip("/"), task_name])
 
         # fetch folder entity

client/ayon_core/modules/clockify/launcher_actions/ClockifySync.py

@@ -19,15 +19,18 @@ class ClockifySync(LauncherAction):
     order = 500
     clockify_api = ClockifyAPI()
 
-    def is_compatible(self, session):
+    def is_compatible(self, selection):
         """Check if there's some projects to sync"""
+        if selection.is_project_selected:
+            return True
+
         try:
             next(ayon_api.get_projects())
             return True
         except StopIteration:
             return False
 
-    def process(self, session, **kwargs):
+    def process(self, selection, **kwargs):
         self.clockify_api.set_api()
         workspace_id = self.clockify_api.workspace_id
         user_id = self.clockify_api.user_id
@@ -37,10 +40,9 @@ class ClockifySync(LauncherAction):
             raise ClockifyPermissionsCheckFailed(
                 "Current CLockify user is missing permissions for this action!"
             )
-        project_name = session.get("AYON_PROJECT_NAME") or ""
 
-        if project_name.strip():
-            projects_to_sync = [ayon_api.get_project(project_name)]
+        if selection.is_project_selected:
+            projects_to_sync = [selection.project_entity]
         else:
             projects_to_sync = ayon_api.get_projects()
 

client/ayon_core/modules/deadline/plugins/publish/submit_aftereffects_deadline.py

@@ -80,6 +80,8 @@ class AfterEffectsSubmitDeadline(
             "FTRACK_API_KEY",
             "FTRACK_API_USER",
             "FTRACK_SERVER",
+            "AYON_BUNDLE_NAME",
+            "AYON_DEFAULT_SETTINGS_VARIANT",
             "AYON_PROJECT_NAME",
             "AYON_FOLDER_PATH",
             "AYON_TASK_NAME",

client/ayon_core/modules/deadline/plugins/publish/submit_blender_deadline.py

@@ -102,6 +102,8 @@ class BlenderSubmitDeadline(abstract_submit_deadline.AbstractSubmitDeadline,
             "FTRACK_API_USER",
             "FTRACK_SERVER",
             "OPENPYPE_SG_USER",
+            "AYON_BUNDLE_NAME",
+            "AYON_DEFAULT_SETTINGS_VARIANT",
             "AYON_PROJECT_NAME",
             "AYON_FOLDER_PATH",
             "AYON_TASK_NAME",

client/ayon_core/modules/deadline/plugins/publish/submit_fusion_deadline.py

@@ -225,6 +225,8 @@ class FusionSubmitDeadline(
             "FTRACK_API_KEY",
             "FTRACK_API_USER",
             "FTRACK_SERVER",
+            "AYON_BUNDLE_NAME",
+            "AYON_DEFAULT_SETTINGS_VARIANT",
             "AYON_PROJECT_NAME",
             "AYON_FOLDER_PATH",
             "AYON_TASK_NAME",

client/ayon_core/modules/deadline/plugins/publish/submit_harmony_deadline.py

@@ -273,6 +273,8 @@ class HarmonySubmitDeadline(
             "FTRACK_API_KEY",
             "FTRACK_API_USER",
             "FTRACK_SERVER",
+            "AYON_BUNDLE_NAME",
+            "AYON_DEFAULT_SETTINGS_VARIANT",
             "AYON_PROJECT_NAME",
             "AYON_FOLDER_PATH",
             "AYON_TASK_NAME",

client/ayon_core/modules/deadline/plugins/publish/submit_max_deadline.py

@@ -106,12 +106,14 @@ class MaxSubmitDeadline(abstract_submit_deadline.AbstractSubmitDeadline,
             "FTRACK_API_USER",
             "FTRACK_SERVER",
             "OPENPYPE_SG_USER",
+            "AYON_BUNDLE_NAME",
+            "AYON_DEFAULT_SETTINGS_VARIANT",
             "AYON_PROJECT_NAME",
             "AYON_FOLDER_PATH",
             "AYON_TASK_NAME",
             "AYON_WORKDIR",
             "AYON_APP_NAME",
-            "IS_TEST"
+            "IS_TEST",
         ]
 
         environment = {

client/ayon_core/modules/deadline/plugins/publish/submit_maya_deadline.py

@@ -207,6 +207,8 @@ class MayaSubmitDeadline(abstract_submit_deadline.AbstractSubmitDeadline,
             "FTRACK_API_USER",
             "FTRACK_SERVER",
             "OPENPYPE_SG_USER",
+            "AYON_BUNDLE_NAME",
+            "AYON_DEFAULT_SETTINGS_VARIANT",
             "AYON_PROJECT_NAME",
             "AYON_FOLDER_PATH",
             "AYON_TASK_NAME",

client/ayon_core/modules/deadline/plugins/publish/submit_nuke_deadline.py

@@ -376,6 +376,8 @@ class NukeSubmitDeadline(pyblish.api.InstancePlugin,
         keys = [
             "PYTHONPATH",
             "PATH",
+            "AYON_BUNDLE_NAME",
+            "AYON_DEFAULT_SETTINGS_VARIANT",
             "AYON_PROJECT_NAME",
             "AYON_FOLDER_PATH",
             "AYON_TASK_NAME",
@@ -388,7 +390,6 @@ class NukeSubmitDeadline(pyblish.api.InstancePlugin,
             "TOOL_ENV",
             "FOUNDRY_LICENSE",
             "OPENPYPE_SG_USER",
-            "AYON_BUNDLE_NAME",
         ]
 
         # add allowed keys from preset if any

client/ayon_core/modules/deadline/plugins/publish/submit_publish_cache_job.py

@@ -133,6 +133,9 @@ class ProcessSubmittedCacheJobOnFarm(pyblish.api.InstancePlugin,
             "AYON_RENDER_JOB": "0",
             "AYON_REMOTE_PUBLISH": "0",
             "AYON_BUNDLE_NAME": os.environ["AYON_BUNDLE_NAME"],
+            "AYON_DEFAULT_SETTINGS_VARIANT": (
+                os.environ["AYON_DEFAULT_SETTINGS_VARIANT"]
+            ),
         }
 
         # add environments from self.environ_keys

client/ayon_core/modules/deadline/plugins/publish/submit_publish_job.py

@@ -210,6 +210,9 @@ class ProcessSubmittedJobOnFarm(pyblish.api.InstancePlugin,
             "AYON_RENDER_JOB": "0",
             "AYON_REMOTE_PUBLISH": "0",
             "AYON_BUNDLE_NAME": os.environ["AYON_BUNDLE_NAME"],
+            "AYON_DEFAULT_SETTINGS_VARIANT": (
+                os.environ["AYON_DEFAULT_SETTINGS_VARIANT"]
+            ),
         }
 
         # add environments from self.environ_keys

client/ayon_core/modules/deadline/repository/custom/plugins/GlobalJobPreLoad.py

@@ -13,7 +13,7 @@ from Deadline.Scripting import (
     FileUtils,
     DirectoryUtils,
 )
-__version__ = "1.0.1"
+__version__ = "1.1.0"
 VERSION_REGEX = re.compile(
     r"(?P<major>0|[1-9]\d*)"
     r"\.(?P<minor>0|[1-9]\d*)"
@@ -463,19 +463,13 @@ def inject_ayon_environment(deadlinePlugin):
         export_url = os.path.join(tempfile.gettempdir(), temp_file_name)
         print(">>> Temporary path: {}".format(export_url))
 
-        args = [
-            "--headless",
-            "extractenvironments",
-            export_url
-        ]
-
         add_kwargs = {
             "envgroup": "farm",
         }
         # Support backwards compatible keys
         for key, env_keys in (
             ("project", ["AYON_PROJECT_NAME", "AVALON_PROJECT"]),
-            ("asset", ["AYON_FOLDER_PATH", "AVALON_ASSET"]),
+            ("folder", ["AYON_FOLDER_PATH", "AVALON_ASSET"]),
             ("task", ["AYON_TASK_NAME", "AVALON_TASK"]),
             ("app", ["AYON_APP_NAME", "AVALON_APP_NAME"]),
         ):
@@ -486,18 +480,37 @@ def inject_ayon_environment(deadlinePlugin):
                     break
             add_kwargs[key] = value
 
-        if job.GetJobEnvironmentKeyValue("IS_TEST"):
-            args.append("--automatic-tests")
-
-        if all(add_kwargs.values()):
-            for key, value in add_kwargs.items():
-                args.extend(["--{}".format(key), value])
-        else:
+        if not all(add_kwargs.values()):
             raise RuntimeError((
                 "Missing required env vars: AYON_PROJECT_NAME,"
                 " AYON_FOLDER_PATH, AYON_TASK_NAME, AYON_APP_NAME"
             ))
 
+        # Use applications addon arguments
+        # TODO validate if applications addon should be used
+        args = [
+            "--headless",
+            "addon",
+            "applications",
+            "extractenvironments",
+            export_url
+        ]
+        # Backwards compatibility for older versions
+        legacy_args = [
+            "--headless",
+            "extractenvironments",
+            export_url
+        ]
+        if job.GetJobEnvironmentKeyValue("IS_TEST"):
+            args.append("--automatic-tests")
+
+        for key, value in add_kwargs.items():
+            args.extend(["--{}".format(key), value])
+            # Legacy arguments expect '--asset' instead of '--folder'
+            if key == "folder":
+                key = "asset"
+            legacy_args.extend(["--{}".format(key), value])
+
         environment = {
             "AYON_SERVER_URL": ayon_server_url,
             "AYON_API_KEY": ayon_api_key,
@@ -516,9 +529,18 @@ def inject_ayon_environment(deadlinePlugin):
         )
 
         if process_exitcode != 0:
-            raise RuntimeError(
-                "Failed to run Ayon process to extract environments."
+            print(
+                "Failed to run AYON process to extract environments. Trying"
+                " to use legacy arguments."
             )
+            legacy_args_str = subprocess.list2cmdline(legacy_args)
+            process_exitcode = deadlinePlugin.RunProcess(
+                exe, legacy_args_str, os.path.dirname(exe), -1
+            )
+            if process_exitcode != 0:
+                raise RuntimeError(
+                    "Failed to run AYON process to extract environments."
+                )
 
         print(">>> Loading file ...")
         with open(export_url) as fp:

client/ayon_core/modules/job_queue/addon.py

@@ -168,7 +168,7 @@ class JobQueueAddon(AYONAddon):
     @classmethod
     def start_worker(cls, app_name, server_url=None):
         import requests
-        from ayon_core.lib import ApplicationManager
+        from ayon_applications import ApplicationManager
 
         if not server_url:
             server_url = cls.get_server_url_from_settings()

client/ayon_core/modules/royalrender/lib.py

@@ -308,31 +308,45 @@ class BaseCreateRoyalRenderJob(pyblish.api.InstancePlugin,
         export_url = os.path.join(tempfile.gettempdir(), temp_file_name)
         print(">>> Temporary path: {}".format(export_url))
 
-        args = [
-            "--headless",
-            "extractenvironments",
-            export_url
-        ]
-
         anatomy_data = instance.context.data["anatomyData"]
+        addons_manager = instance.context.data["ayonAddonsManager"]
+        applications_addon = addons_manager.get_enabled_addon("applications")
+
+        folder_key = "folder"
+        if applications_addon is None:
+            # Use 'asset' when applications addon command is not used
+            folder_key = "asset"
 
         add_kwargs = {
             "project": anatomy_data["project"]["name"],
-            "asset": instance.context.data["folderPath"],
+            folder_key: instance.context.data["folderPath"],
             "task": anatomy_data["task"]["name"],
             "app": instance.context.data.get("appName"),
             "envgroup": "farm"
         }
 
-        if os.getenv('IS_TEST'):
-            args.append("--automatic-tests")
-
         if not all(add_kwargs.values()):
             raise RuntimeError((
                 "Missing required env vars: AYON_PROJECT_NAME, AYON_FOLDER_PATH,"
                 " AYON_TASK_NAME, AYON_APP_NAME"
             ))
 
+        args = ["--headless"]
+        # Use applications addon to extract environments
+        # NOTE this is for backwards compatibility, the global command
+        #   will be removed in future and only applications addon command
+        #   should be used.
+        if applications_addon is not None:
+            args.extend(["addon", "applications"])
+
+        args.extend([
+            "extractenvironments",
+            export_url
+        ])
+
+        if os.getenv('IS_TEST'):
+            args.append("--automatic-tests")
+
         for key, value in add_kwargs.items():
             args.extend([f"--{key}", value])
         self.log.debug("Executing: {}".format(" ".join(args)))

client/ayon_core/modules/timers_manager/launch_hooks/post_start_timer.py

@@ -1,4 +1,4 @@
-from ayon_core.lib.applications import PostLaunchHook, LaunchTypes
+from ayon_applications import PostLaunchHook, LaunchTypes
 
 
 class PostStartTimerHook(PostLaunchHook):

client/ayon_core/pipeline/actions.py

@@ -1,4 +1,8 @@
 import logging
+import warnings
+
+import ayon_api
+
 from ayon_core.pipeline.plugin_discover import (
     discover,
     register_plugin,
@@ -10,6 +14,288 @@ from ayon_core.pipeline.plugin_discover import (
 from .load.utils import get_representation_path_from_context
 
 
+class LauncherActionSelection:
+    """Object helper to pass selection to actions.
+
+    Object support backwards compatibility for 'session' from OpenPype where
+    environment variable keys were used to define selection.
+
+    Args:
+        project_name (str): Selected project name.
+        folder_id (str): Selected folder id.
+        task_id (str): Selected task id.
+        folder_path (Optional[str]): Selected folder path.
+        task_name (Optional[str]): Selected task name.
+        project_entity (Optional[dict[str, Any]]): Project entity.
+        folder_entity (Optional[dict[str, Any]]): Folder entity.
+        task_entity (Optional[dict[str, Any]]): Task entity.
+
+    """
+    def __init__(
+        self,
+        project_name,
+        folder_id,
+        task_id,
+        folder_path=None,
+        task_name=None,
+        project_entity=None,
+        folder_entity=None,
+        task_entity=None
+    ):
+        self._project_name = project_name
+        self._folder_id = folder_id
+        self._task_id = task_id
+
+        self._folder_path = folder_path
+        self._task_name = task_name
+
+        self._project_entity = project_entity
+        self._folder_entity = folder_entity
+        self._task_entity = task_entity
+
+    def __getitem__(self, key):
+        warnings.warn(
+            (
+                "Using deprecated access to selection data. Please use"
+                " attributes and methods"
+                " defined by 'LauncherActionSelection'."
+            ),
+            category=DeprecationWarning
+        )
+        if key in {"AYON_PROJECT_NAME", "AVALON_PROJECT"}:
+            return self.project_name
+        if key in {"AYON_FOLDER_PATH", "AVALON_ASSET"}:
+            return self.folder_path
+        if key in {"AYON_TASK_NAME", "AVALON_TASK"}:
+            return self.task_name
+        raise KeyError(f"Key: {key} not found")
+
+    def __iter__(self):
+        for key in self.keys():
+            yield key
+
+    def __contains__(self, key):
+        warnings.warn(
+            (
+                "Using deprecated access to selection data. Please use"
+                " attributes and methods"
+                " defined by 'LauncherActionSelection'."
+            ),
+            category=DeprecationWarning
+        )
+        # Fake missing keys check for backwards compatibility
+        if key in {
+            "AYON_PROJECT_NAME",
+            "AVALON_PROJECT",
+        }:
+            return self._project_name is not None
+        if key in {
+            "AYON_FOLDER_PATH",
+            "AVALON_ASSET",
+        }:
+            return self._folder_id is not None
+        if key in {
+            "AYON_TASK_NAME",
+            "AVALON_TASK",
+        }:
+            return self._task_id is not None
+        return False
+
+    def get(self, key, default=None):
+        """
+
+        Deprecated:
+            Added for backwards compatibility with older actions.
+
+        """
+        warnings.warn(
+            (
+                "Using deprecated access to selection data. Please use"
+                " attributes and methods"
+                " defined by 'LauncherActionSelection'."
+            ),
+            category=DeprecationWarning
+        )
+        try:
+            return self[key]
+        except KeyError:
+            return default
+
+    def items(self):
+        """
+
+        Deprecated:
+            Added for backwards compatibility with older actions.
+
+        """
+        for key, value in (
+            ("AYON_PROJECT_NAME", self.project_name),
+            ("AYON_FOLDER_PATH", self.folder_path),
+            ("AYON_TASK_NAME", self.task_name),
+        ):
+            if value is not None:
+                yield (key, value)
+
+    def keys(self):
+        """
+
+        Deprecated:
+            Added for backwards compatibility with older actions.
+
+        """
+        for key, _ in self.items():
+            yield key
+
+    def values(self):
+        """
+
+        Deprecated:
+            Added for backwards compatibility with older actions.
+
+        """
+        for _, value in self.items():
+            yield value
+
+    def get_project_name(self):
+        """Selected project name.
+
+        Returns:
+            Union[str, None]: Selected project name.
+
+        """
+        return self._project_name
+
+    def get_folder_id(self):
+        """Selected folder id.
+
+        Returns:
+            Union[str, None]: Selected folder id.
+
+        """
+        return self._folder_id
+
+    def get_folder_path(self):
+        """Selected folder path.
+
+        Returns:
+            Union[str, None]: Selected folder path.
+
+        """
+        if self._folder_id is None:
+            return None
+        if self._folder_path is None:
+            self._folder_path = self.folder_entity["path"]
+        return self._folder_path
+
+    def get_task_id(self):
+        """Selected task id.
+
+        Returns:
+            Union[str, None]: Selected task id.
+
+        """
+        return self._task_id
+
+    def get_task_name(self):
+        """Selected task name.
+
+        Returns:
+            Union[str, None]: Selected task name.
+
+        """
+        if self._task_id is None:
+            return None
+        if self._task_name is None:
+            self._task_name = self.task_entity["name"]
+        return self._task_name
+
+    def get_project_entity(self):
+        """Project entity for the selection.
+
+        Returns:
+            Union[dict[str, Any], None]: Project entity.
+
+        """
+        if self._project_name is None:
+            return None
+        if self._project_entity is None:
+            self._project_entity = ayon_api.get_project(self._project_name)
+        return self._project_entity
+
+    def get_folder_entity(self):
+        """Folder entity for the selection.
+
+        Returns:
+            Union[dict[str, Any], None]: Folder entity.
+
+        """
+        if self._project_name is None or self._folder_id is None:
+            return None
+        if self._folder_entity is None:
+            self._folder_entity = ayon_api.get_folder_by_id(
+                self._project_name, self._folder_id
+            )
+        return self._folder_entity
+
+    def get_task_entity(self):
+        """Task entity for the selection.
+
+        Returns:
+            Union[dict[str, Any], None]: Task entity.
+
+        """
+        if (
+            self._project_name is None
+            or self._task_id is None
+        ):
+            return None
+        if self._task_entity is None:
+            self._task_entity = ayon_api.get_task_by_id(
+                self._project_name, self._task_id
+            )
+        return self._task_entity
+
+    @property
+    def is_project_selected(self):
+        """Return whether a project is selected.
+
+        Returns:
+            bool: Whether a project is selected.
+
+        """
+        return self._project_name is not None
+
+    @property
+    def is_folder_selected(self):
+        """Return whether a folder is selected.
+
+        Returns:
+            bool: Whether a folder is selected.
+
+        """
+        return self._folder_id is not None
+
+    @property
+    def is_task_selected(self):
+        """Return whether a task is selected.
+
+        Returns:
+            bool: Whether a task is selected.
+
+        """
+        return self._task_id is not None
+
+    project_name = property(get_project_name)
+    folder_id = property(get_folder_id)
+    task_id = property(get_task_id)
+    folder_path = property(get_folder_path)
+    task_name = property(get_task_name)
+
+    project_entity = property(get_project_entity)
+    folder_entity = property(get_folder_entity)
+    task_entity = property(get_task_entity)
+
+
 class LauncherAction(object):
     """A custom action available"""
     name = None
@@ -21,17 +307,23 @@ class LauncherAction(object):
     log = logging.getLogger("LauncherAction")
     log.propagate = True
 
-    def is_compatible(self, session):
+    def is_compatible(self, selection):
         """Return whether the class is compatible with the Session.
 
         Args:
-            session (dict[str, Union[str, None]]): Session data with
-                AYON_PROJECT_NAME, AYON_FOLDER_PATH and AYON_TASK_NAME.
-        """
+            selection (LauncherActionSelection): Data with selection.
 
+        """
         return True
 
-    def process(self, session, **kwargs):
+    def process(self, selection, **kwargs):
+        """Process the action.
+
+        Args:
+            selection (LauncherActionSelection): Data with selection.
+            **kwargs: Additional arguments.
+
+        """
         pass
 
 

client/ayon_core/pipeline/context_tools.py

@@ -97,8 +97,8 @@ def install_host(host):
     """Install `host` into the running Python session.
 
     Args:
-        host (module): A Python module containing the Avalon
-            avalon host-interface.
+        host (HostBase): A host interface object.
+
     """
     global _is_installed
 
@@ -154,6 +154,13 @@ def install_host(host):
 
 
 def install_ayon_plugins(project_name=None, host_name=None):
+    """Install AYON core plugins and make sure the core is initialized.
+
+    Args:
+        project_name (Optional[str]): Name of project to install plugins for.
+        host_name (Optional[str]): Name of host to install plugins for.
+
+    """
     # Make sure global AYON connection has set site id and version
     # - this is necessary if 'install_host' is not called
     initialize_ayon_connection()
@@ -223,6 +230,12 @@ def install_ayon_plugins(project_name=None, host_name=None):
 
 
 def install_openpype_plugins(project_name=None, host_name=None):
+    """Install AYON core plugins and make sure the core is initialized.
+
+    Deprecated:
+        Use `install_ayon_plugins` instead.
+
+    """
     install_ayon_plugins(project_name, host_name)
 
 
@@ -281,47 +294,6 @@ def deregister_host():
     _registered_host["_"] = None
 
 
-def debug_host():
-    """A debug host, useful to debugging features that depend on a host"""
-
-    host = types.ModuleType("debugHost")
-
-    def ls():
-        containers = [
-            {
-                "representation": "ee-ft-a-uuid1",
-                "schema": "openpype:container-1.0",
-                "name": "Bruce01",
-                "objectName": "Bruce01_node",
-                "namespace": "_bruce01_",
-                "version": 3,
-            },
-            {
-                "representation": "aa-bc-s-uuid2",
-                "schema": "openpype:container-1.0",
-                "name": "Bruce02",
-                "objectName": "Bruce01_node",
-                "namespace": "_bruce02_",
-                "version": 2,
-            }
-        ]
-
-        for container in containers:
-            yield container
-
-    host.__dict__.update({
-        "ls": ls,
-        "open_file": lambda fname: None,
-        "save_file": lambda fname: None,
-        "current_file": lambda: os.path.expanduser("~/temp.txt"),
-        "has_unsaved_changes": lambda: False,
-        "work_root": lambda: os.path.expanduser("~/temp"),
-        "file_extensions": lambda: ["txt"],
-    })
-
-    return host
-
-
 def get_current_host_name():
     """Current host name.
 
@@ -347,7 +319,8 @@ def get_global_context():
     Use 'get_current_context' to make sure you'll get current host integration
     context info.
 
-    Example:
+    Example::
+
         {
             "project_name": "Commercial",
             "folder_path": "Bunny",
@@ -515,88 +488,13 @@ def get_current_context_template_data(settings=None):
     )
 
 
-def get_workdir_from_session(session=None, template_key=None):
-    """Template data for template fill from session keys.
-
-    Args:
-        session (Union[Dict[str, str], None]): The Session to use. If not
-            provided use the currently active global Session.
-        template_key (str): Prepared template key from which workdir is
-            calculated.
-
-    Returns:
-        str: Workdir path.
-    """
-
-    if session is not None:
-        project_name = session["AYON_PROJECT_NAME"]
-        host_name = session["AYON_HOST_NAME"]
-    else:
-        project_name = get_current_project_name()
-        host_name = get_current_host_name()
-    template_data = get_template_data_from_session(session)
-
-    if not template_key:
-        task_type = template_data["task"]["type"]
-        template_key = get_workfile_template_key(
-            project_name,
-            task_type,
-            host_name,
-        )
-
-    anatomy = Anatomy(project_name)
-    template_obj = anatomy.get_template_item("work", template_key, "directory")
-    path = template_obj.format_strict(template_data)
-    if path:
-        path = os.path.normpath(path)
-    return path
-
-
-def get_custom_workfile_template_from_session(
-    session=None, project_settings=None
-):
-    """Filter and fill workfile template profiles by current context.
-
-    This function cab be used only inside host where context is set.
-
-    Args:
-        session (Optional[Dict[str, str]]): Session from which are taken
-            data.
-        project_settings(Optional[Dict[str, Any]]): Project settings.
-
-    Returns:
-        str: Path to template or None if none of profiles match current
-            context. (Existence of formatted path is not validated.)
-    """
-
-    if session is not None:
-        project_name = session["AYON_PROJECT_NAME"]
-        folder_path = session["AYON_FOLDER_PATH"]
-        task_name = session["AYON_TASK_NAME"]
-        host_name = session["AYON_HOST_NAME"]
-    else:
-        context = get_current_context()
-        project_name = context["project_name"]
-        folder_path = context["folder_path"]
-        task_name = context["task_name"]
-        host_name = get_current_host_name()
-
-    return get_custom_workfile_template_by_string_context(
-        project_name,
-        folder_path,
-        task_name,
-        host_name,
-        project_settings=project_settings
-    )
-
-
 def get_current_context_custom_workfile_template(project_settings=None):
     """Filter and fill workfile template profiles by current context.
 
-    This function can be used only inside host where context is set.
+    This function can be used only inside host where current context is set.
 
     Args:
-        project_settings(Optional[Dict[str, Any]]): Project settings.
+        project_settings (Optional[dict[str, Any]]): Project settings
 
     Returns:
         str: Path to template or None if none of profiles match current

client/ayon_core/pipeline/create/README.md

@@ -8,7 +8,7 @@ Discovers Creator plugins to be able create new instances and convert existing i
 
 Publish plugins are loaded because they can also define attributes definitions. These are less product type specific To be able define attributes Publish plugin must inherit from `AYONPyblishPluginMixin` and must override `get_attribute_defs` class method which must return list of attribute definitions. Values of publish plugin definitions are stored per plugin name under `publish_attributes`. Also can override `convert_attribute_values` class method which gives ability to modify values on instance before are used in CreatedInstance. Method `convert_attribute_values` can be also used without `get_attribute_defs` to modify values when changing compatibility (remove metadata from instance because are irrelevant).
 
-Possible attribute definitions can be found in `openpype/pipeline/lib/attribute_definitions.py`.
+Possible attribute definitions can be found in `ayon_core/lib/attribute_definitions.py`.
 
 Except creating and removing instances are all changes not automatically propagated to host context (scene/workfile/...) to propagate changes call `save_changes` which trigger update of all instances in context using Creators implementation.