Merge branch 'develop' into feature/OP-2731_Flame-rendering-presets-resolution-and-regex-comment-filter

CHANGELOG.md

@@ -1,16 +1,31 @@
 # Changelog
 
-## [3.9.0-nightly.8](https://github.com/pypeclub/OpenPype/tree/HEAD)
+## [3.9.1-nightly.1](https://github.com/pypeclub/OpenPype/tree/HEAD)
 
-[Full Changelog](https://github.com/pypeclub/OpenPype/compare/3.8.2...HEAD)
+[Full Changelog](https://github.com/pypeclub/OpenPype/compare/3.9.0...HEAD)
+
+**🐛 Bug fixes**
+
+- Harmony - fixed creator issue [\#2891](https://github.com/pypeclub/OpenPype/pull/2891)
+- General: Remove forgotten use of avalon Creator [\#2885](https://github.com/pypeclub/OpenPype/pull/2885)
+- General: Avoid circular import [\#2884](https://github.com/pypeclub/OpenPype/pull/2884)
+- Fixes for attaching loaded containers \(\#2837\) [\#2874](https://github.com/pypeclub/OpenPype/pull/2874)
+
+**🔀 Refactored code**
+
+- General: Reduce style usage to OpenPype repository [\#2889](https://github.com/pypeclub/OpenPype/pull/2889)
+
+## [3.9.0](https://github.com/pypeclub/OpenPype/tree/3.9.0) (2022-03-14)
+
+[Full Changelog](https://github.com/pypeclub/OpenPype/compare/CI/3.9.0-nightly.9...3.9.0)
 
 **Deprecated:**
 
 - AssetCreator: Remove the tool [\#2845](https://github.com/pypeclub/OpenPype/pull/2845)
-- Houdini: Remove unused code [\#2779](https://github.com/pypeclub/OpenPype/pull/2779)
 
 **🚀 Enhancements**
 
+- General: Subset name filtering in ExtractReview outpus [\#2872](https://github.com/pypeclub/OpenPype/pull/2872)
 - NewPublisher: Descriptions and Icons in creator dialog [\#2867](https://github.com/pypeclub/OpenPype/pull/2867)
 - NewPublisher: Changing task on publishing instance [\#2863](https://github.com/pypeclub/OpenPype/pull/2863)
 - TrayPublisher: Choose project widget is more clear [\#2859](https://github.com/pypeclub/OpenPype/pull/2859)
@@ -22,11 +37,12 @@
 - global: letter box calculated on output as last process [\#2812](https://github.com/pypeclub/OpenPype/pull/2812)
 - Nuke: adding Reformat to baking mov plugin  [\#2811](https://github.com/pypeclub/OpenPype/pull/2811)
 - Manager: Update all to latest button [\#2805](https://github.com/pypeclub/OpenPype/pull/2805)
-- General: Set context environments for non host applications [\#2803](https://github.com/pypeclub/OpenPype/pull/2803)
 
 **🐛 Bug fixes**
 
+- General: Missing time function [\#2877](https://github.com/pypeclub/OpenPype/pull/2877)
 - Deadline: Fix plugin name for tile assemble [\#2868](https://github.com/pypeclub/OpenPype/pull/2868)
+- Nuke: gizmo precollect fix [\#2866](https://github.com/pypeclub/OpenPype/pull/2866)
 - General: Fix hardlink for windows [\#2864](https://github.com/pypeclub/OpenPype/pull/2864)
 - General: ffmpeg was crashing on slate merge [\#2860](https://github.com/pypeclub/OpenPype/pull/2860)
 - WebPublisher: Video file was published with one too many frame [\#2858](https://github.com/pypeclub/OpenPype/pull/2858)
@@ -35,6 +51,7 @@
 - Nuke: slate resolution to input video resolution [\#2853](https://github.com/pypeclub/OpenPype/pull/2853)
 - WebPublisher: Fix username stored in DB [\#2852](https://github.com/pypeclub/OpenPype/pull/2852)
 - WebPublisher: Fix wrong number of frames for video file [\#2851](https://github.com/pypeclub/OpenPype/pull/2851)
+- Nuke: Fix family test in validate\_write\_legacy to work with stillImage [\#2847](https://github.com/pypeclub/OpenPype/pull/2847)
 - Nuke: fix multiple baking profile farm publishing [\#2842](https://github.com/pypeclub/OpenPype/pull/2842)
 - Blender: Fixed parameters for FBX export of the camera [\#2840](https://github.com/pypeclub/OpenPype/pull/2840)
 - Maya: Stop creation of reviews for Cryptomattes [\#2832](https://github.com/pypeclub/OpenPype/pull/2832)
@@ -47,23 +64,18 @@
 - Ftrack: Job killer with missing user [\#2819](https://github.com/pypeclub/OpenPype/pull/2819)
 - Nuke: Use AVALON\_APP to get value for "app" key [\#2818](https://github.com/pypeclub/OpenPype/pull/2818)
 - StandalonePublisher: use dynamic groups in subset names [\#2816](https://github.com/pypeclub/OpenPype/pull/2816)
-- Settings UI: Search case sensitivity [\#2810](https://github.com/pypeclub/OpenPype/pull/2810)
-- Flame Babypublisher optimalization [\#2806](https://github.com/pypeclub/OpenPype/pull/2806)
 
 **🔀 Refactored code**
 
+- Refactor: move webserver tool to openpype [\#2876](https://github.com/pypeclub/OpenPype/pull/2876)
 - General: Move create logic from avalon to OpenPype [\#2854](https://github.com/pypeclub/OpenPype/pull/2854)
 - General: Add vendors from avalon [\#2848](https://github.com/pypeclub/OpenPype/pull/2848)
+- General: Basic event system [\#2846](https://github.com/pypeclub/OpenPype/pull/2846)
 - General: Move change context functions [\#2839](https://github.com/pypeclub/OpenPype/pull/2839)
 - Tools: Don't use avalon tools code [\#2829](https://github.com/pypeclub/OpenPype/pull/2829)
 - Move Unreal Implementation to OpenPype [\#2823](https://github.com/pypeclub/OpenPype/pull/2823)
 - General: Extract template formatting from anatomy [\#2766](https://github.com/pypeclub/OpenPype/pull/2766)
 
-**Merged pull requests:**
-
-- Nuke: gizmo precollect fix [\#2866](https://github.com/pypeclub/OpenPype/pull/2866)
-- Nuke: Fix family test in validate\_write\_legacy to work with stillImage [\#2847](https://github.com/pypeclub/OpenPype/pull/2847)
-
 ## [3.8.2](https://github.com/pypeclub/OpenPype/tree/3.8.2) (2022-02-07)
 
 [Full Changelog](https://github.com/pypeclub/OpenPype/compare/CI/3.8.2-nightly.3...3.8.2)

openpype/__init__.py

@@ -5,13 +5,13 @@ import platform
 import functools
 import logging
 
-from openpype.pipeline import LegacyCreator
 from .settings import get_project_settings
 from .lib import (
     Anatomy,
     filter_pyblish_plugins,
     set_plugin_attributes_from_settings,
-    change_timer_to_current_context
+    change_timer_to_current_context,
+    register_event_callback,
 )
 
 pyblish = avalon = _original_discover = None
@@ -75,6 +75,10 @@ def install():
     """Install Pype to Avalon."""
     from pyblish.lib import MessageHandler
     from openpype.modules import load_modules
+    from openpype.pipeline import (
+        LegacyCreator,
+        register_loader_plugin_path,
+    )
     from avalon import pipeline
 
     # Make sure modules are loaded
@@ -90,7 +94,7 @@ def install():
     log.info("Registering global plug-ins..")
     pyblish.register_plugin_path(PUBLISH_PATH)
     pyblish.register_discovery_filter(filter_pyblish_plugins)
-    avalon.register_plugin_path(avalon.Loader, LOAD_PATH)
+    register_loader_plugin_path(LOAD_PATH)
 
     project_name = os.environ.get("AVALON_PROJECT")
 
@@ -118,7 +122,7 @@ def install():
                 continue
 
             pyblish.register_plugin_path(path)
-            avalon.register_plugin_path(avalon.Loader, path)
+            register_loader_plugin_path(path)
             avalon.register_plugin_path(LegacyCreator, path)
             avalon.register_plugin_path(avalon.InventoryAction, path)
 
@@ -128,20 +132,22 @@ def install():
     avalon.discover = patched_discover
     pipeline.discover = patched_discover
 
-    avalon.on("taskChanged", _on_task_change)
+    register_event_callback("taskChanged", _on_task_change)
 
 
-def _on_task_change(*args):
+def _on_task_change():
     change_timer_to_current_context()
 
 
 @import_wrapper
 def uninstall():
     """Uninstall Pype from Avalon."""
+    from openpype.pipeline import deregister_loader_plugin_path
+
     log.info("Deregistering global plug-ins..")
     pyblish.deregister_plugin_path(PUBLISH_PATH)
     pyblish.deregister_discovery_filter(filter_pyblish_plugins)
-    avalon.deregister_plugin_path(avalon.Loader, LOAD_PATH)
+    deregister_loader_plugin_path(LOAD_PATH)
     log.info("Global plug-ins unregistred")
 
     # restore original discover

openpype/hosts/aftereffects/api/launch_logic.py

@@ -15,7 +15,7 @@ from Qt import QtCore
 from openpype.tools.utils import host_tools
 
 from avalon import api
-from avalon.tools.webserver.app import WebServerTool
+from openpype.tools.adobe_webserver.app import WebServerTool
 
 from .ws_stub import AfterEffectsServerStub
 

openpype/hosts/aftereffects/api/pipeline.py

@@ -9,8 +9,13 @@ from avalon import io, pipeline
 
 from openpype import lib
 from openpype.api import Logger
-from openpype.pipeline import LegacyCreator
+from openpype.pipeline import (
+    LegacyCreator,
+    register_loader_plugin_path,
+    deregister_loader_plugin_path,
+)
 import openpype.hosts.aftereffects
+from openpype.lib import register_event_callback
 
 from .launch_logic import get_stub
 
@@ -66,7 +71,7 @@ def install():
     pyblish.api.register_host("aftereffects")
     pyblish.api.register_plugin_path(PUBLISH_PATH)
 
-    avalon.api.register_plugin_path(avalon.api.Loader, LOAD_PATH)
+    register_loader_plugin_path(LOAD_PATH)
     avalon.api.register_plugin_path(LegacyCreator, CREATE_PATH)
     log.info(PUBLISH_PATH)
 
@@ -74,12 +79,12 @@ def install():
         "instanceToggled", on_pyblish_instance_toggled
     )
 
-    avalon.api.on("application.launched", application_launch)
+    register_event_callback("application.launched", application_launch)
 
 
 def uninstall():
     pyblish.api.deregister_plugin_path(PUBLISH_PATH)
-    avalon.api.deregister_plugin_path(avalon.api.Loader, LOAD_PATH)
+    deregister_loader_plugin_path(LOAD_PATH)
     avalon.api.deregister_plugin_path(LegacyCreator, CREATE_PATH)
 
 

openpype/hosts/aftereffects/api/plugin.py

@@ -1,9 +1,8 @@
-import avalon.api
+from openpype.pipeline import LoaderPlugin
 from .launch_logic import get_stub
 
 
-class AfterEffectsLoader(avalon.api.Loader):
+class AfterEffectsLoader(LoaderPlugin):
     @staticmethod
     def get_stub():
         return get_stub()
-

openpype/hosts/aftereffects/api/ws_stub.py

@@ -8,7 +8,7 @@ import logging
 import attr
 
 from wsrpc_aiohttp import WebSocketAsync
-from avalon.tools.webserver.app import WebServerTool
+from openpype.tools.adobe_webserver.app import WebServerTool
 
 
 @attr.s

openpype/hosts/aftereffects/plugins/load/load_background.py

@@ -1,11 +1,10 @@
 import re
 
-import avalon.api
-
 from openpype.lib import (
     get_background_layers,
     get_unique_layer_name
 )
+from openpype.pipeline import get_representation_path
 from openpype.hosts.aftereffects.api import (
     AfterEffectsLoader,
     containerise
@@ -78,7 +77,7 @@ class BackgroundLoader(AfterEffectsLoader):
         else:  # switching version - keep same name
             comp_name = container["namespace"]
 
-        path = avalon.api.get_representation_path(representation)
+        path = get_representation_path(representation)
 
         layers = get_background_layers(path)
         comp = stub.reload_background(container["members"][1],

openpype/hosts/aftereffects/plugins/load/load_file.py

@@ -1,8 +1,8 @@
 import re
 
-import avalon.api
 from openpype import lib
 
+from openpype.pipeline import get_representation_path
 from openpype.hosts.aftereffects.api import (
     AfterEffectsLoader,
     containerise
@@ -92,7 +92,7 @@ class FileLoader(AfterEffectsLoader):
                 "{}_{}".format(context["asset"], context["subset"]))
         else:  # switching version - keep same name
             layer_name = container["namespace"]
-        path = avalon.api.get_representation_path(representation)
+        path = get_representation_path(representation)
         # with aftereffects.maintained_selection():  # TODO
         stub.replace_item(layer.id, path, stub.LOADED_ICON + layer_name)
         stub.imprint(

openpype/hosts/blender/api/pipeline.py

@@ -14,8 +14,16 @@ import avalon.api
 from avalon import io, schema
 from avalon.pipeline import AVALON_CONTAINER_ID
 
-from openpype.pipeline import LegacyCreator
+from openpype.pipeline import (
+    LegacyCreator,
+    register_loader_plugin_path,
+    deregister_loader_plugin_path,
+)
 from openpype.api import Logger
+from openpype.lib import (
+    register_event_callback,
+    emit_event
+)
 import openpype.hosts.blender
 
 HOST_DIR = os.path.dirname(os.path.abspath(openpype.hosts.blender.__file__))
@@ -46,13 +54,14 @@ def install():
     pyblish.api.register_host("blender")
     pyblish.api.register_plugin_path(str(PUBLISH_PATH))
 
-    avalon.api.register_plugin_path(avalon.api.Loader, str(LOAD_PATH))
+    register_loader_plugin_path(str(LOAD_PATH))
     avalon.api.register_plugin_path(LegacyCreator, str(CREATE_PATH))
 
     lib.append_user_scripts()
 
-    avalon.api.on("new", on_new)
+    register_event_callback("new", on_new)
-    avalon.api.on("open", on_open)
+    register_event_callback("open", on_open)
+
     _register_callbacks()
     _register_events()
 
@@ -67,7 +76,7 @@ def uninstall():
     pyblish.api.deregister_host("blender")
     pyblish.api.deregister_plugin_path(str(PUBLISH_PATH))
 
-    avalon.api.deregister_plugin_path(avalon.api.Loader, str(LOAD_PATH))
+    deregister_loader_plugin_path(str(LOAD_PATH))
     avalon.api.deregister_plugin_path(LegacyCreator, str(CREATE_PATH))
 
     if not IS_HEADLESS:
@@ -114,22 +123,22 @@ def set_start_end_frames():
     scene.render.resolution_y = resolution_y
 
 
-def on_new(arg1, arg2):
+def on_new():
     set_start_end_frames()
 
 
-def on_open(arg1, arg2):
+def on_open():
     set_start_end_frames()
 
 
 @bpy.app.handlers.persistent
 def _on_save_pre(*args):
-    avalon.api.emit("before_save", args)
+    emit_event("before.save")
 
 
 @bpy.app.handlers.persistent
 def _on_save_post(*args):
-    avalon.api.emit("save", args)
+    emit_event("save")
 
 
 @bpy.app.handlers.persistent
@@ -137,9 +146,9 @@ def _on_load_post(*args):
     # Detect new file or opening an existing file
     if bpy.data.filepath:
         # Likely this was an open operation since it has a filepath
-        avalon.api.emit("open", args)
+        emit_event("open")
     else:
-        avalon.api.emit("new", args)
+        emit_event("new")
 
     ops.OpenFileCacher.post_load()
 
@@ -170,7 +179,7 @@ def _register_callbacks():
     log.info("Installed event handler _on_load_post...")
 
 
-def _on_task_changed(*args):
+def _on_task_changed():
     """Callback for when the task in the context is changed."""
 
     # TODO (jasper): Blender has no concept of projects or workspace.
@@ -187,7 +196,7 @@ def _on_task_changed(*args):
 def _register_events():
     """Install callbacks for specific events."""
 
-    avalon.api.on("taskChanged", _on_task_changed)
+    register_event_callback("taskChanged", _on_task_changed)
     log.info("Installed event callback for 'taskChanged'...")
 
 

openpype/hosts/blender/api/plugin.py

@@ -5,8 +5,10 @@ from typing import Dict, List, Optional
 
 import bpy
 
-import avalon.api
+from openpype.pipeline import (
-from openpype.pipeline import LegacyCreator
+    LegacyCreator,
+    LoaderPlugin,
+)
 from .pipeline import AVALON_CONTAINERS
 from .ops import (
     MainThreadItem,
@@ -145,13 +147,13 @@ class Creator(LegacyCreator):
         return collection
 
 
-class Loader(avalon.api.Loader):
+class Loader(LoaderPlugin):
     """Base class for Loader plug-ins."""
 
     hosts = ["blender"]
 
 
-class AssetLoader(avalon.api.Loader):
+class AssetLoader(LoaderPlugin):
     """A basic AssetLoader for Blender
 
     This will implement the basic logic for linking/appending assets

openpype/hosts/blender/plugins/load/load_abc.py

@@ -6,7 +6,7 @@ from typing import Dict, List, Optional
 
 import bpy
 
-from avalon import api
+from openpype.pipeline import get_representation_path
 from openpype.hosts.blender.api.pipeline import (
     AVALON_CONTAINERS,
     AVALON_PROPERTY,
@@ -178,7 +178,7 @@ class CacheModelLoader(plugin.AssetLoader):
         """
         object_name = container["objectName"]
         asset_group = bpy.data.objects.get(object_name)
-        libpath = Path(api.get_representation_path(representation))
+        libpath = Path(get_representation_path(representation))
         extension = libpath.suffix.lower()
 
         self.log.info(

openpype/hosts/blender/plugins/load/load_action.py

@@ -5,9 +5,13 @@ from pathlib import Path
 from pprint import pformat
 from typing import Dict, List, Optional
 
-from avalon import api, blender
 import bpy
+from openpype.pipeline import get_representation_path
 import openpype.hosts.blender.api.plugin
+from openpype.hosts.blender.api.pipeline import (
+    containerise_existing,
+    AVALON_PROPERTY,
+)
 
 logger = logging.getLogger("openpype").getChild("blender").getChild("load_action")
 
@@ -49,7 +53,7 @@ class BlendActionLoader(openpype.hosts.blender.api.plugin.AssetLoader):
 
         container = bpy.data.collections.new(lib_container)
         container.name = container_name
-        blender.pipeline.containerise_existing(
+        containerise_existing(
             container,
             name,
             namespace,
@@ -57,8 +61,7 @@ class BlendActionLoader(openpype.hosts.blender.api.plugin.AssetLoader):
             self.__class__.__name__,
         )
 
-        container_metadata = container.get(
+        container_metadata = container.get(AVALON_PROPERTY)
-            blender.pipeline.AVALON_PROPERTY)
 
         container_metadata["libpath"] = libpath
         container_metadata["lib_container"] = lib_container
@@ -90,16 +93,16 @@ class BlendActionLoader(openpype.hosts.blender.api.plugin.AssetLoader):
 
                 anim_data.action.make_local()
 
-            if not obj.get(blender.pipeline.AVALON_PROPERTY):
+            if not obj.get(AVALON_PROPERTY):
 
-                obj[blender.pipeline.AVALON_PROPERTY] = dict()
+                obj[AVALON_PROPERTY] = dict()
 
-            avalon_info = obj[blender.pipeline.AVALON_PROPERTY]
+            avalon_info = obj[AVALON_PROPERTY]
             avalon_info.update({"container_name": container_name})
 
             objects_list.append(obj)
 
-        animation_container.pop(blender.pipeline.AVALON_PROPERTY)
+        animation_container.pop(AVALON_PROPERTY)
 
         # Save the list of objects in the metadata container
         container_metadata["objects"] = objects_list
@@ -128,7 +131,7 @@ class BlendActionLoader(openpype.hosts.blender.api.plugin.AssetLoader):
             container["objectName"]
         )
 
-        libpath = Path(api.get_representation_path(representation))
+        libpath = Path(get_representation_path(representation))
         extension = libpath.suffix.lower()
 
         logger.info(
@@ -153,8 +156,7 @@ class BlendActionLoader(openpype.hosts.blender.api.plugin.AssetLoader):
             f"Unsupported file: {libpath}"
         )
 
-        collection_metadata = collection.get(
+        collection_metadata = collection.get(AVALON_PROPERTY)
-            blender.pipeline.AVALON_PROPERTY)
 
         collection_libpath = collection_metadata["libpath"]
         normalized_collection_libpath = (
@@ -225,16 +227,16 @@ class BlendActionLoader(openpype.hosts.blender.api.plugin.AssetLoader):
                     strip.action = anim_data.action
                     strip.action_frame_end = anim_data.action.frame_range[1]
 
-            if not obj.get(blender.pipeline.AVALON_PROPERTY):
+            if not obj.get(AVALON_PROPERTY):
 
-                obj[blender.pipeline.AVALON_PROPERTY] = dict()
+                obj[AVALON_PROPERTY] = dict()
 
-            avalon_info = obj[blender.pipeline.AVALON_PROPERTY]
+            avalon_info = obj[AVALON_PROPERTY]
             avalon_info.update({"container_name": collection.name})
 
             objects_list.append(obj)
 
-        anim_container.pop(blender.pipeline.AVALON_PROPERTY)
+        anim_container.pop(AVALON_PROPERTY)
 
         # Save the list of objects in the metadata container
         collection_metadata["objects"] = objects_list
@@ -266,8 +268,7 @@ class BlendActionLoader(openpype.hosts.blender.api.plugin.AssetLoader):
             "Nested collections are not supported."
         )
 
-        collection_metadata = collection.get(
+        collection_metadata = collection.get(AVALON_PROPERTY)
-            blender.pipeline.AVALON_PROPERTY)
         objects = collection_metadata["objects"]
         lib_container = collection_metadata["lib_container"]
 

openpype/hosts/blender/plugins/load/load_audio.py

@@ -6,7 +6,7 @@ from typing import Dict, List, Optional
 
 import bpy
 
-from avalon import api
+from openpype.pipeline import get_representation_path
 from openpype.hosts.blender.api import plugin
 from openpype.hosts.blender.api.pipeline import (
     AVALON_CONTAINERS,
@@ -102,7 +102,7 @@ class AudioLoader(plugin.AssetLoader):
         """
         object_name = container["objectName"]
         asset_group = bpy.data.objects.get(object_name)
-        libpath = Path(api.get_representation_path(representation))
+        libpath = Path(get_representation_path(representation))
 
         self.log.info(
             "Container: %s\nRepresentation: %s",

openpype/hosts/blender/plugins/load/load_camera_blend.py

@@ -7,7 +7,7 @@ from typing import Dict, List, Optional
 
 import bpy
 
-from avalon import api
+from openpype.pipeline import get_representation_path
 from openpype.hosts.blender.api import plugin
 from openpype.hosts.blender.api.pipeline import (
     AVALON_CONTAINERS,
@@ -155,7 +155,7 @@ class BlendCameraLoader(plugin.AssetLoader):
         """
         object_name = container["objectName"]
         asset_group = bpy.data.objects.get(object_name)
-        libpath = Path(api.get_representation_path(representation))
+        libpath = Path(get_representation_path(representation))
         extension = libpath.suffix.lower()
 
         self.log.info(

openpype/hosts/blender/plugins/load/load_camera_fbx.py

@@ -6,7 +6,7 @@ from typing import Dict, List, Optional
 
 import bpy
 
-from avalon import api
+from openpype.pipeline import get_representation_path
 from openpype.hosts.blender.api import plugin, lib
 from openpype.hosts.blender.api.pipeline import (
     AVALON_CONTAINERS,
@@ -143,7 +143,7 @@ class FbxCameraLoader(plugin.AssetLoader):
         """
         object_name = container["objectName"]
         asset_group = bpy.data.objects.get(object_name)
-        libpath = Path(api.get_representation_path(representation))
+        libpath = Path(get_representation_path(representation))
         extension = libpath.suffix.lower()
 
         self.log.info(

openpype/hosts/blender/plugins/load/load_fbx.py

@@ -6,7 +6,7 @@ from typing import Dict, List, Optional
 
 import bpy
 
-from avalon import api
+from openpype.pipeline import get_representation_path
 from openpype.hosts.blender.api import plugin, lib
 from openpype.hosts.blender.api.pipeline import (
     AVALON_CONTAINERS,
@@ -187,7 +187,7 @@ class FbxModelLoader(plugin.AssetLoader):
         """
         object_name = container["objectName"]
         asset_group = bpy.data.objects.get(object_name)
-        libpath = Path(api.get_representation_path(representation))
+        libpath = Path(get_representation_path(representation))
         extension = libpath.suffix.lower()
 
         self.log.info(

openpype/hosts/blender/plugins/load/load_layout_blend.py

@@ -6,9 +6,11 @@ from typing import Dict, List, Optional
 
 import bpy
 
-from avalon import api
 from openpype import lib
-from openpype.pipeline import legacy_create
+from openpype.pipeline import (
+    legacy_create,
+    get_representation_path,
+)
 from openpype.hosts.blender.api import plugin
 from openpype.hosts.blender.api.pipeline import (
     AVALON_CONTAINERS,
@@ -309,7 +311,7 @@ class BlendLayoutLoader(plugin.AssetLoader):
         """
         object_name = container["objectName"]
         asset_group = bpy.data.objects.get(object_name)
-        libpath = Path(api.get_representation_path(representation))
+        libpath = Path(get_representation_path(representation))
         extension = libpath.suffix.lower()
 
         self.log.info(

openpype/hosts/blender/plugins/load/load_layout_json.py

@@ -7,7 +7,13 @@ from typing import Dict, Optional
 
 import bpy
 
-from avalon import api
+from openpype.pipeline import (
+    discover_loader_plugins,
+    remove_container,
+    load_container,
+    get_representation_path,
+    loaders_from_representation,
+)
 from openpype.hosts.blender.api.pipeline import (
     AVALON_INSTANCES,
     AVALON_CONTAINERS,
@@ -33,7 +39,7 @@ class JsonLayoutLoader(plugin.AssetLoader):
         objects = list(asset_group.children)
 
         for obj in objects:
-            api.remove(obj.get(AVALON_PROPERTY))
+            remove_container(obj.get(AVALON_PROPERTY))
 
     def _remove_animation_instances(self, asset_group):
         instances = bpy.data.collections.get(AVALON_INSTANCES)
@@ -66,13 +72,13 @@ class JsonLayoutLoader(plugin.AssetLoader):
         with open(libpath, "r") as fp:
             data = json.load(fp)
 
-        all_loaders = api.discover(api.Loader)
+        all_loaders = discover_loader_plugins()
 
         for element in data:
             reference = element.get('reference')
             family = element.get('family')
 
-            loaders = api.loaders_from_representation(all_loaders, reference)
+            loaders = loaders_from_representation(all_loaders, reference)
             loader = self._get_loader(loaders, family)
 
             if not loader:
@@ -102,7 +108,7 @@ class JsonLayoutLoader(plugin.AssetLoader):
             # at this time it will not return anything. The assets will be
             # loaded in the next Blender cycle, so we use the options to
             # set the transform, parent and assign the action, if there is one.
-            api.load(
+            load_container(
                 loader,
                 reference,
                 namespace=instance_name,
@@ -188,7 +194,7 @@ class JsonLayoutLoader(plugin.AssetLoader):
         """
         object_name = container["objectName"]
         asset_group = bpy.data.objects.get(object_name)
-        libpath = Path(api.get_representation_path(representation))
+        libpath = Path(get_representation_path(representation))
         extension = libpath.suffix.lower()
 
         self.log.info(

openpype/hosts/blender/plugins/load/load_look.py

@@ -8,7 +8,7 @@ import os
 import json
 import bpy
 
-from avalon import api
+from openpype.pipeline import get_representation_path
 from openpype.hosts.blender.api import plugin
 from openpype.hosts.blender.api.pipeline import (
     containerise_existing,
@@ -140,7 +140,7 @@ class BlendLookLoader(plugin.AssetLoader):
 
     def update(self, container: Dict, representation: Dict):
         collection = bpy.data.collections.get(container["objectName"])
-        libpath = Path(api.get_representation_path(representation))
+        libpath = Path(get_representation_path(representation))
         extension = libpath.suffix.lower()
 
         self.log.info(

openpype/hosts/blender/plugins/load/load_model.py

@@ -6,7 +6,7 @@ from typing import Dict, List, Optional
 
 import bpy
 
-from avalon import api
+from openpype.pipeline import get_representation_path
 from openpype.hosts.blender.api import plugin
 from openpype.hosts.blender.api.pipeline import (
     AVALON_CONTAINERS,
@@ -195,7 +195,7 @@ class BlendModelLoader(plugin.AssetLoader):
         """
         object_name = container["objectName"]
         asset_group = bpy.data.objects.get(object_name)
-        libpath = Path(api.get_representation_path(representation))
+        libpath = Path(get_representation_path(representation))
         extension = libpath.suffix.lower()
 
         self.log.info(

openpype/hosts/blender/plugins/load/load_rig.py

@@ -6,11 +6,15 @@ from typing import Dict, List, Optional
 
 import bpy
 
-from avalon import api
-from avalon.blender import lib as avalon_lib
 from openpype import lib
-from openpype.pipeline import legacy_create
+from openpype.pipeline import (
-from openpype.hosts.blender.api import plugin
+    legacy_create,
+    get_representation_path,
+)
+from openpype.hosts.blender.api import (
+    plugin,
+    get_selection,
+)
 from openpype.hosts.blender.api.pipeline import (
     AVALON_CONTAINERS,
     AVALON_PROPERTY,
@@ -263,7 +267,7 @@ class BlendRigLoader(plugin.AssetLoader):
         if anim_file:
             bpy.ops.import_scene.fbx(filepath=anim_file, anim_offset=0.0)
 
-            imported = avalon_lib.get_selection()
+            imported = get_selection()
 
             armature = [
                 o for o in asset_group.children if o.type == 'ARMATURE'][0]
@@ -307,7 +311,7 @@ class BlendRigLoader(plugin.AssetLoader):
         """
         object_name = container["objectName"]
         asset_group = bpy.data.objects.get(object_name)
-        libpath = Path(api.get_representation_path(representation))
+        libpath = Path(get_representation_path(representation))
         extension = libpath.suffix.lower()
 
         self.log.info(

openpype/hosts/flame/api/pipeline.py

@@ -7,7 +7,11 @@ from avalon import api as avalon
 from avalon.pipeline import AVALON_CONTAINER_ID
 from pyblish import api as pyblish
 from openpype.api import Logger
-from openpype.pipeline import LegacyCreator
+from openpype.pipeline import (
+    LegacyCreator,
+    register_loader_plugin_path,
+    deregister_loader_plugin_path,
+)
 from .lib import (
     set_segment_data_marker,
     set_publish_attribute,
@@ -33,7 +37,7 @@ def install():
 
     pyblish.register_host("flame")
     pyblish.register_plugin_path(PUBLISH_PATH)
-    avalon.register_plugin_path(avalon.Loader, LOAD_PATH)
+    register_loader_plugin_path(LOAD_PATH)
     avalon.register_plugin_path(LegacyCreator, CREATE_PATH)
     avalon.register_plugin_path(avalon.InventoryAction, INVENTORY_PATH)
     log.info("OpenPype Flame plug-ins registred ...")
@@ -48,7 +52,7 @@ def uninstall():
 
     log.info("Deregistering Flame plug-ins..")
     pyblish.deregister_plugin_path(PUBLISH_PATH)
-    avalon.deregister_plugin_path(avalon.Loader, LOAD_PATH)
+    deregister_loader_plugin_path(LOAD_PATH)
     avalon.deregister_plugin_path(LegacyCreator, CREATE_PATH)
     avalon.deregister_plugin_path(avalon.InventoryAction, INVENTORY_PATH)
 

openpype/hosts/flame/api/plugin.py

@@ -7,9 +7,11 @@ import six
 import qargparse
 from Qt import QtWidgets, QtCore
 import openpype.api as openpype
-from openpype.pipeline import LegacyCreator
+from openpype.pipeline import (
+    LegacyCreator,
+    LoaderPlugin,
+)
 from openpype import style
-import avalon.api as avalon
 from . import (
     lib as flib,
     pipeline as fpipeline,
@@ -660,7 +662,7 @@ class PublishableClip:
 # Publishing plugin functions
 # Loader plugin functions
 
-class ClipLoader(avalon.Loader):
+class ClipLoader(LoaderPlugin):
     """A basic clip loader for Flame
 
     This will implement the basic behavior for a loader to inherit from that

openpype/hosts/flame/plugins/load/load_clip.py

@@ -172,7 +172,7 @@ class LoadClip(opfapi.ClipLoader):
     #     version_name = version.get("name", None)
     #     colorspace = version_data.get("colorspace", None)
     #     object_name = "{}_{}".format(name, namespace)
-    #     file = api.get_representation_path(representation).replace("\\", "/")
+    #     file = get_representation_path(representation).replace("\\", "/")
     #     clip = track_item.source()
 
     #     # reconnect media to new path

openpype/hosts/flame/plugins/publish/extract_subset_resources.py

@@ -226,16 +226,10 @@ class ExtractSubsetResources(openpype.api.Extractor):
                 # imagesequence as list
                 if (
                     # first check if path in files is not mov extension
-                    next(
+                    [
-                        # iter all paths in files
+                        f for f in files
-                        # return only .mov positive test
+                        if os.path.splitext(f)[-1] == ".mov"
-                        iter([
+                    ]
-                            f for f in files
-                            if ".mov" in os.path.splitext(f)[-1]
-                        ]),
-                        # if nothing return default
-                        None
-                    )
                     # then try if thumbnail is not in unique name
                     or unique_name == "thumbnail"
                 ):

openpype/hosts/fusion/api/lib.py

@@ -5,8 +5,8 @@ import contextlib
 
 from Qt import QtGui
 
-import avalon.api
 from avalon import io
+from openpype.pipeline import switch_container
 from .pipeline import get_current_comp, comp_lock_and_undo_chunk
 
 self = sys.modules[__name__]
@@ -142,7 +142,7 @@ def switch_item(container,
     assert representation, ("Could not find representation in the database "
                             "with the name '%s'" % representation_name)
 
-    avalon.api.switch(container, representation)
+    switch_container(container, representation)
 
     return representation
 

openpype/hosts/fusion/api/pipeline.py

@@ -11,7 +11,11 @@ import avalon.api
 from avalon.pipeline import AVALON_CONTAINER_ID
 
 from openpype.api import Logger
-from openpype.pipeline import LegacyCreator
+from openpype.pipeline import (
+    LegacyCreator,
+    register_loader_plugin_path,
+    deregister_loader_plugin_path,
+)
 import openpype.hosts.fusion
 
 log = Logger().get_logger(__name__)
@@ -63,7 +67,7 @@ def install():
     pyblish.api.register_plugin_path(PUBLISH_PATH)
     log.info("Registering Fusion plug-ins..")
 
-    avalon.api.register_plugin_path(avalon.api.Loader, LOAD_PATH)
+    register_loader_plugin_path(LOAD_PATH)
     avalon.api.register_plugin_path(LegacyCreator, CREATE_PATH)
     avalon.api.register_plugin_path(avalon.api.InventoryAction, INVENTORY_PATH)
 
@@ -87,7 +91,7 @@ def uninstall():
     pyblish.api.deregister_plugin_path(PUBLISH_PATH)
     log.info("Deregistering Fusion plug-ins..")
 
-    avalon.api.deregister_plugin_path(avalon.api.Loader, LOAD_PATH)
+    deregister_loader_plugin_path(LOAD_PATH)
     avalon.api.deregister_plugin_path(LegacyCreator, CREATE_PATH)
     avalon.api.deregister_plugin_path(
         avalon.api.InventoryAction, INVENTORY_PATH

openpype/hosts/fusion/plugins/load/actions.py

@@ -2,10 +2,10 @@
 
 """
 
-from avalon import api
+from openpype.pipeline import load
 
 
-class FusionSetFrameRangeLoader(api.Loader):
+class FusionSetFrameRangeLoader(load.LoaderPlugin):
     """Specific loader of Alembic for the avalon.animation family"""
 
     families = ["animation",
@@ -39,7 +39,7 @@ class FusionSetFrameRangeLoader(api.Loader):
         lib.update_frame_range(start, end)
 
 
-class FusionSetFrameRangeWithHandlesLoader(api.Loader):
+class FusionSetFrameRangeWithHandlesLoader(load.LoaderPlugin):
     """Specific loader of Alembic for the avalon.animation family"""
 
     families = ["animation",

openpype/hosts/fusion/plugins/load/load_sequence.py

@@ -1,8 +1,12 @@
 import os
 import contextlib
 
-from avalon import api, io
+from avalon import io
 
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 from openpype.hosts.fusion.api import (
     imprint_container,
     get_current_comp,
@@ -117,7 +121,7 @@ def loader_shift(loader, frame, relative=True):
     return int(shift)
 
 
-class FusionLoadSequence(api.Loader):
+class FusionLoadSequence(load.LoaderPlugin):
     """Load image sequence into Fusion"""
 
     families = ["imagesequence", "review", "render"]
@@ -204,7 +208,7 @@ class FusionLoadSequence(api.Loader):
         assert tool.ID == "Loader", "Must be Loader"
         comp = tool.Comp()
 
-        root = os.path.dirname(api.get_representation_path(representation))
+        root = os.path.dirname(get_representation_path(representation))
         path = self._get_first_image(root)
 
         # Get start frame from version data

openpype/hosts/harmony/api/README.md

@@ -575,7 +575,7 @@ replace_files = """function %s_replace_files(args)
 """ % (signature, signature)
 
 
-class ImageSequenceLoader(api.Loader):
+class ImageSequenceLoader(load.LoaderPlugin):
     """Load images
     Stores the imported asset in a container named after the asset.
     """

openpype/hosts/harmony/api/TB_sceneOpened.js

@@ -272,8 +272,8 @@ function Client() {
 
         app.avalonClient.send(
             {
-                'module': 'avalon.api',
+                'module': 'openpype.lib',
-                'method': 'emit',
+                'method': 'emit_event',
                 'args': ['application.launched']
             }, false);
     };

openpype/hosts/harmony/api/pipeline.py

@@ -9,7 +9,12 @@ import avalon.api
 from avalon.pipeline import AVALON_CONTAINER_ID
 
 from openpype import lib
-from openpype.pipeline import LegacyCreator
+from openpype.lib import register_event_callback
+from openpype.pipeline import (
+    LegacyCreator,
+    register_loader_plugin_path,
+    deregister_loader_plugin_path,
+)
 import openpype.hosts.harmony
 import openpype.hosts.harmony.api as harmony
 
@@ -130,7 +135,7 @@ def check_inventory():
     harmony.send({"function": "PypeHarmony.message", "args": msg})
 
 
-def application_launch():
+def application_launch(event):
     """Event that is executed after Harmony is launched."""
     # FIXME: This is breaking server <-> client communication.
     # It is now moved so it it manually called.
@@ -179,7 +184,7 @@ def install():
 
     pyblish.api.register_host("harmony")
     pyblish.api.register_plugin_path(PUBLISH_PATH)
-    avalon.api.register_plugin_path(avalon.api.Loader, LOAD_PATH)
+    register_loader_plugin_path(LOAD_PATH)
     avalon.api.register_plugin_path(LegacyCreator, CREATE_PATH)
     log.info(PUBLISH_PATH)
 
@@ -188,12 +193,12 @@ def install():
         "instanceToggled", on_pyblish_instance_toggled
     )
 
-    avalon.api.on("application.launched", application_launch)
+    register_event_callback("application.launched", application_launch)
 
 
 def uninstall():
     pyblish.api.deregister_plugin_path(PUBLISH_PATH)
-    avalon.api.deregister_plugin_path(avalon.api.Loader, LOAD_PATH)
+    deregister_loader_plugin_path(LOAD_PATH)
     avalon.api.deregister_plugin_path(LegacyCreator, CREATE_PATH)
 
 

openpype/hosts/harmony/plugins/load/load_audio.py

@@ -1,4 +1,7 @@
-from avalon import api
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 import openpype.hosts.harmony.api as harmony
 
 sig = harmony.signature()
@@ -29,7 +32,7 @@ function %s(args)
 """ % (sig, sig)
 
 
-class ImportAudioLoader(api.Loader):
+class ImportAudioLoader(load.LoaderPlugin):
     """Import audio."""
 
     families = ["shot", "audio"]
@@ -37,7 +40,7 @@ class ImportAudioLoader(api.Loader):
     label = "Import Audio"
 
     def load(self, context, name=None, namespace=None, data=None):
-        wav_file = api.get_representation_path(context["representation"])
+        wav_file = get_representation_path(context["representation"])
         harmony.send(
             {"function": func, "args": [context["subset"]["name"], wav_file]}
         )

openpype/hosts/harmony/plugins/load/load_background.py

@@ -1,7 +1,10 @@
 import os
 import json
 
-from avalon import api
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 import openpype.hosts.harmony.api as harmony
 import openpype.lib
 
@@ -226,7 +229,7 @@ replace_files
 """
 
 
-class BackgroundLoader(api.Loader):
+class BackgroundLoader(load.LoaderPlugin):
     """Load images
     Stores the imported asset in a container named after the asset.
     """
@@ -278,7 +281,7 @@ class BackgroundLoader(api.Loader):
 
     def update(self, container, representation):
 
-        path = api.get_representation_path(representation)
+        path = get_representation_path(representation)
 
         with open(path) as json_file:
             data = json.load(json_file)
@@ -297,7 +300,7 @@ class BackgroundLoader(api.Loader):
 
         bg_folder = os.path.dirname(path)
 
-        path = api.get_representation_path(representation)
+        path = get_representation_path(representation)
 
         print(container)
 

openpype/hosts/harmony/plugins/load/load_imagesequence.py

@@ -6,12 +6,15 @@ from pathlib import Path
 
 import clique
 
-from avalon import api
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 import openpype.hosts.harmony.api as harmony
 import openpype.lib
 
 
-class ImageSequenceLoader(api.Loader):
+class ImageSequenceLoader(load.LoaderPlugin):
     """Load image sequences.
 
     Stores the imported asset in a container named after the asset.
@@ -79,7 +82,7 @@ class ImageSequenceLoader(api.Loader):
         self_name = self.__class__.__name__
         node = container.get("nodes").pop()
 
-        path = api.get_representation_path(representation)
+        path = get_representation_path(representation)
         collections, remainder = clique.assemble(
             os.listdir(os.path.dirname(path))
         )

openpype/hosts/harmony/plugins/load/load_palette.py

@@ -1,11 +1,14 @@
 import os
 import shutil
 
-from avalon import api
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 import openpype.hosts.harmony.api as harmony
 
 
-class ImportPaletteLoader(api.Loader):
+class ImportPaletteLoader(load.LoaderPlugin):
     """Import palettes."""
 
     families = ["palette", "harmony.palette"]
@@ -31,7 +34,7 @@ class ImportPaletteLoader(api.Loader):
         scene_path = harmony.send(
             {"function": "scene.currentProjectPath"}
         )["result"]
-        src = api.get_representation_path(representation)
+        src = get_representation_path(representation)
         dst = os.path.join(
             scene_path,
             "palette-library",

openpype/hosts/harmony/plugins/load/load_template.py

@@ -6,12 +6,15 @@ import os
 import shutil
 import uuid
 
-from avalon import api
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 import openpype.hosts.harmony.api as harmony
 import openpype.lib
 
 
-class TemplateLoader(api.Loader):
+class TemplateLoader(load.LoaderPlugin):
     """Load Harmony template as container.
 
     .. todo::
@@ -38,7 +41,7 @@ class TemplateLoader(api.Loader):
         # Load template.
         self_name = self.__class__.__name__
         temp_dir = tempfile.mkdtemp()
-        zip_file = api.get_representation_path(context["representation"])
+        zip_file = get_representation_path(context["representation"])
         template_path = os.path.join(temp_dir, "temp.tpl")
         with zipfile.ZipFile(zip_file, "r") as zip_ref:
             zip_ref.extractall(template_path)

openpype/hosts/harmony/plugins/load/load_template_workfile.py

@@ -3,11 +3,14 @@ import zipfile
 import os
 import shutil
 
-from avalon import api
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 import openpype.hosts.harmony.api as harmony
 
 
-class ImportTemplateLoader(api.Loader):
+class ImportTemplateLoader(load.LoaderPlugin):
     """Import templates."""
 
     families = ["harmony.template", "workfile"]
@@ -17,7 +20,7 @@ class ImportTemplateLoader(api.Loader):
     def load(self, context, name=None, namespace=None, data=None):
         # Import template.
         temp_dir = tempfile.mkdtemp()
-        zip_file = api.get_representation_path(context["representation"])
+        zip_file = get_representation_path(context["representation"])
         template_path = os.path.join(temp_dir, "temp.tpl")
         with zipfile.ZipFile(zip_file, "r") as zip_ref:
             zip_ref.extractall(template_path)

openpype/hosts/harmony/plugins/publish/collect_farm_render.py

@@ -5,6 +5,7 @@ from pathlib import Path
 import attr
 from avalon import api
 
+from openpype.lib import get_formatted_current_time
 import openpype.lib.abstract_collect_render
 import openpype.hosts.harmony.api as harmony
 from openpype.lib.abstract_collect_render import RenderInstance
@@ -138,7 +139,7 @@ class CollectFarmRender(openpype.lib.abstract_collect_render.
 
             render_instance = HarmonyRenderInstance(
                 version=version,
-                time=api.time(),
+                time=get_formatted_current_time(),
                 source=context.data["currentFile"],
                 label=node.split("/")[1],
                 subset=subset_name,

openpype/hosts/hiero/api/events.py

@@ -1,12 +1,12 @@
 import os
 import hiero.core.events
-import avalon.api as avalon
 from openpype.api import Logger
 from .lib import (
     sync_avalon_data_to_workfile,
     launch_workfiles_app,
     selection_changed_timeline,
-    before_project_save
+    before_project_save,
+    register_event_callback
 )
 from .tags import add_tags_to_workfile
 from .menu import update_menu_task_label
@@ -126,5 +126,5 @@ def register_events():
     """
 
     # if task changed then change notext of hiero
-    avalon.on("taskChanged", update_menu_task_label)
+    register_event_callback("taskChanged", update_menu_task_label)
     log.info("Installed event callback for 'taskChanged'..")

openpype/hosts/hiero/api/menu.py

@@ -14,7 +14,7 @@ self = sys.modules[__name__]
 self._change_context_menu = None
 
 
-def update_menu_task_label(*args):
+def update_menu_task_label():
     """Update the task label in Avalon menu to current session"""
 
     object_name = self._change_context_menu

openpype/hosts/hiero/api/pipeline.py

@@ -9,7 +9,11 @@ from avalon import api as avalon
 from avalon import schema
 from pyblish import api as pyblish
 from openpype.api import Logger
-from openpype.pipeline import LegacyCreator
+from openpype.pipeline import (
+    LegacyCreator,
+    register_loader_plugin_path,
+    deregister_loader_plugin_path,
+)
 from openpype.tools.utils import host_tools
 from . import lib, menu, events
 
@@ -45,7 +49,7 @@ def install():
     log.info("Registering Hiero plug-ins..")
     pyblish.register_host("hiero")
     pyblish.register_plugin_path(PUBLISH_PATH)
-    avalon.register_plugin_path(avalon.Loader, LOAD_PATH)
+    register_loader_plugin_path(LOAD_PATH)
     avalon.register_plugin_path(LegacyCreator, CREATE_PATH)
     avalon.register_plugin_path(avalon.InventoryAction, INVENTORY_PATH)
 
@@ -67,7 +71,7 @@ def uninstall():
     log.info("Deregistering Hiero plug-ins..")
     pyblish.deregister_host("hiero")
     pyblish.deregister_plugin_path(PUBLISH_PATH)
-    avalon.deregister_plugin_path(avalon.Loader, LOAD_PATH)
+    deregister_loader_plugin_path(LOAD_PATH)
     avalon.deregister_plugin_path(LegacyCreator, CREATE_PATH)
 
     # register callback for switching publishable

openpype/hosts/hiero/api/plugin.py

@@ -6,9 +6,9 @@ import hiero
 
 from Qt import QtWidgets, QtCore
 import qargparse
-import avalon.api as avalon
+
 import openpype.api as openpype
-from openpype.pipeline import LegacyCreator
+from openpype.pipeline import LoaderPlugin, LegacyCreator
 from . import lib
 
 log = openpype.Logger().get_logger(__name__)
@@ -306,7 +306,7 @@ def get_reference_node_parents(ref):
     return parents
 
 
-class SequenceLoader(avalon.Loader):
+class SequenceLoader(LoaderPlugin):
     """A basic SequenceLoader for Resolve
 
     This will implement the basic behavior for a loader to inherit from that

openpype/hosts/hiero/plugins/load/load_clip.py

@@ -1,4 +1,5 @@
-from avalon import io, api
+from avalon import io
+from openpype.pipeline import get_representation_path
 import openpype.hosts.hiero.api as phiero
 # from openpype.hosts.hiero.api import plugin, lib
 # reload(lib)
@@ -112,7 +113,7 @@ class LoadClip(phiero.SequenceLoader):
         version_name = version.get("name", None)
         colorspace = version_data.get("colorspace", None)
         object_name = "{}_{}".format(name, namespace)
-        file = api.get_representation_path(representation).replace("\\", "/")
+        file = get_representation_path(representation).replace("\\", "/")
         clip = track_item.source()
 
         # reconnect media to new path

openpype/hosts/houdini/api/pipeline.py

@@ -11,12 +11,17 @@ import avalon.api
 from avalon.pipeline import AVALON_CONTAINER_ID
 from avalon.lib import find_submodule
 
-from openpype.pipeline import LegacyCreator
+from openpype.pipeline import (
+    LegacyCreator,
+    register_loader_plugin_path,
+)
 import openpype.hosts.houdini
 from openpype.hosts.houdini.api import lib
 
 from openpype.lib import (
-    any_outdated
+    register_event_callback,
+    emit_event,
+    any_outdated,
 )
 
 from .lib import get_asset_fps
@@ -48,15 +53,15 @@ def install():
     pyblish.api.register_host("hpython")
 
     pyblish.api.register_plugin_path(PUBLISH_PATH)
-    avalon.api.register_plugin_path(avalon.api.Loader, LOAD_PATH)
+    register_loader_plugin_path(LOAD_PATH)
     avalon.api.register_plugin_path(LegacyCreator, CREATE_PATH)
 
     log.info("Installing callbacks ... ")
-    # avalon.on("init", on_init)
+    # register_event_callback("init", on_init)
-    avalon.api.before("save", before_save)
+    register_event_callback("before.save", before_save)
-    avalon.api.on("save", on_save)
+    register_event_callback("save", on_save)
-    avalon.api.on("open", on_open)
+    register_event_callback("open", on_open)
-    avalon.api.on("new", on_new)
+    register_event_callback("new", on_new)
 
     pyblish.api.register_callback(
         "instanceToggled", on_pyblish_instance_toggled
@@ -102,13 +107,13 @@ def _register_callbacks():
 
 def on_file_event_callback(event):
     if event == hou.hipFileEventType.AfterLoad:
-        avalon.api.emit("open", [event])
+        emit_event("open")
     elif event == hou.hipFileEventType.AfterSave:
-        avalon.api.emit("save", [event])
+        emit_event("save")
     elif event == hou.hipFileEventType.BeforeSave:
-        avalon.api.emit("before_save", [event])
+        emit_event("before.save")
     elif event == hou.hipFileEventType.AfterClear:
-        avalon.api.emit("new", [event])
+        emit_event("new")
 
 
 def get_main_window():
@@ -230,11 +235,11 @@ def ls():
         yield data
 
 
-def before_save(*args):
+def before_save():
     return lib.validate_fps()
 
 
-def on_save(*args):
+def on_save():
 
     log.info("Running callback on save..")
 
@@ -243,7 +248,7 @@ def on_save(*args):
         lib.set_id(node, new_id, overwrite=False)
 
 
-def on_open(*args):
+def on_open():
 
     if not hou.isUIAvailable():
         log.debug("Batch mode detected, ignoring `on_open` callbacks..")
@@ -280,7 +285,7 @@ def on_open(*args):
             dialog.show()
 
 
-def on_new(_):
+def on_new():
     """Set project resolution and fps when create a new file"""
 
     if hou.hipFile.isLoadingHipFile():

openpype/hosts/houdini/plugins/load/actions.py

@@ -2,10 +2,10 @@
 
 """
 
-from avalon import api
+from openpype.pipeline import load
 
 
-class SetFrameRangeLoader(api.Loader):
+class SetFrameRangeLoader(load.LoaderPlugin):
     """Set Houdini frame range"""
 
     families = [
@@ -43,7 +43,7 @@ class SetFrameRangeLoader(api.Loader):
         hou.playbar.setPlaybackRange(start, end)
 
 
-class SetFrameRangeWithHandlesLoader(api.Loader):
+class SetFrameRangeWithHandlesLoader(load.LoaderPlugin):
     """Set Maya frame range including pre- and post-handles"""
 
     families = [

openpype/hosts/houdini/plugins/load/load_alembic.py

@@ -1,10 +1,12 @@
 import os
-from avalon import api
+from openpype.pipeline import (
-
+    load,
+    get_representation_path,
+)
 from openpype.hosts.houdini.api import pipeline
 
 
-class AbcLoader(api.Loader):
+class AbcLoader(load.LoaderPlugin):
     """Specific loader of Alembic for the avalon.animation family"""
 
     families = ["model", "animation", "pointcache", "gpuCache"]
@@ -90,7 +92,7 @@ class AbcLoader(api.Loader):
             return
 
         # Update the file path
-        file_path = api.get_representation_path(representation)
+        file_path = get_representation_path(representation)
         file_path = file_path.replace("\\", "/")
 
         alembic_node.setParms({"fileName": file_path})

openpype/hosts/houdini/plugins/load/load_ass.py

@@ -1,11 +1,15 @@
 import os
 
-from avalon import api
-from avalon.houdini import pipeline
 import clique
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
+
+from openpype.hosts.houdini.api import pipeline
 
 
-class AssLoader(api.Loader):
+class AssLoader(load.LoaderPlugin):
     """Load .ass with Arnold Procedural"""
 
     families = ["ass"]
@@ -88,7 +92,7 @@ class AssLoader(api.Loader):
     def update(self, container, representation):
 
         # Update the file path
-        file_path = api.get_representation_path(representation)
+        file_path = get_representation_path(representation)
         file_path = file_path.replace("\\", "/")
 
         procedural = container["node"]

openpype/hosts/houdini/plugins/load/load_camera.py

@@ -1,4 +1,7 @@
-from avalon import api
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 from openpype.hosts.houdini.api import pipeline
 
 
@@ -74,7 +77,7 @@ def transfer_non_default_values(src, dest, ignore=None):
         dest_parm.setFromParm(parm)
 
 
-class CameraLoader(api.Loader):
+class CameraLoader(load.LoaderPlugin):
     """Specific loader of Alembic for the avalon.animation family"""
 
     families = ["camera"]
@@ -129,7 +132,7 @@ class CameraLoader(api.Loader):
         node = container["node"]
 
         # Update the file path
-        file_path = api.get_representation_path(representation)
+        file_path = get_representation_path(representation)
         file_path = file_path.replace("\\", "/")
 
         # Update attributes

openpype/hosts/houdini/plugins/load/load_hda.py

@@ -1,10 +1,13 @@
 # -*- coding: utf-8 -*-
-from avalon import api
+import os
-
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 from openpype.hosts.houdini.api import pipeline
 
 
-class HdaLoader(api.Loader):
+class HdaLoader(load.LoaderPlugin):
     """Load Houdini Digital Asset file."""
 
     families = ["hda"]
@@ -15,7 +18,6 @@ class HdaLoader(api.Loader):
     color = "orange"
 
     def load(self, context, name=None, namespace=None, data=None):
-        import os
         import hou
 
         # Format file name, Houdini only wants forward slashes
@@ -49,7 +51,7 @@ class HdaLoader(api.Loader):
         import hou
 
         hda_node = container["node"]
-        file_path = api.get_representation_path(representation)
+        file_path = get_representation_path(representation)
         file_path = file_path.replace("\\", "/")
         hou.hda.installFile(file_path)
         defs = hda_node.type().allInstalledDefinitions()

openpype/hosts/houdini/plugins/load/load_image.py

@@ -1,6 +1,9 @@
 import os
 
-from avalon import api
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 from openpype.hosts.houdini.api import lib, pipeline
 
 import hou
@@ -37,7 +40,7 @@ def get_image_avalon_container():
     return image_container
 
 
-class ImageLoader(api.Loader):
+class ImageLoader(load.LoaderPlugin):
     """Specific loader of Alembic for the avalon.animation family"""
 
     families = ["colorbleed.imagesequence"]
@@ -87,7 +90,7 @@ class ImageLoader(api.Loader):
         node = container["node"]
 
         # Update the file path
-        file_path = api.get_representation_path(representation)
+        file_path = get_representation_path(representation)
         file_path = file_path.replace("\\", "/")
         file_path = self._get_file_sequence(file_path)
 

openpype/hosts/houdini/plugins/load/load_usd_layer.py

@@ -1,8 +1,11 @@
-from avalon import api
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 from openpype.hosts.houdini.api import lib, pipeline
 
 
-class USDSublayerLoader(api.Loader):
+class USDSublayerLoader(load.LoaderPlugin):
     """Sublayer USD file in Solaris"""
 
     families = [
@@ -57,7 +60,7 @@ class USDSublayerLoader(api.Loader):
         node = container["node"]
 
         # Update the file path
-        file_path = api.get_representation_path(representation)
+        file_path = get_representation_path(representation)
         file_path = file_path.replace("\\", "/")
 
         # Update attributes

openpype/hosts/houdini/plugins/load/load_usd_reference.py

@@ -1,8 +1,11 @@
-from avalon import api
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 from openpype.hosts.houdini.api import lib, pipeline
 
 
-class USDReferenceLoader(api.Loader):
+class USDReferenceLoader(load.LoaderPlugin):
     """Reference USD file in Solaris"""
 
     families = [
@@ -57,7 +60,7 @@ class USDReferenceLoader(api.Loader):
         node = container["node"]
 
         # Update the file path
-        file_path = api.get_representation_path(representation)
+        file_path = get_representation_path(representation)
         file_path = file_path.replace("\\", "/")
 
         # Update attributes

openpype/hosts/houdini/plugins/load/load_vdb.py

@@ -1,11 +1,14 @@
 import os
 import re
-from avalon import api
 
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 from openpype.hosts.houdini.api import pipeline
 
 
-class VdbLoader(api.Loader):
+class VdbLoader(load.LoaderPlugin):
     """Specific loader of Alembic for the avalon.animation family"""
 
     families = ["vdbcache"]
@@ -96,7 +99,7 @@ class VdbLoader(api.Loader):
             return
 
         # Update the file path
-        file_path = api.get_representation_path(representation)
+        file_path = get_representation_path(representation)
         file_path = self.format_path(file_path)
 
         file_node.setParms({"fileName": file_path})

openpype/hosts/houdini/plugins/load/show_usdview.py

@@ -1,7 +1,7 @@
-from avalon import api
+from openpype.pipeline import load
 
 
-class ShowInUsdview(api.Loader):
+class ShowInUsdview(load.LoaderPlugin):
     """Open USD file in usdview"""
 
     families = ["colorbleed.usd"]

openpype/hosts/houdini/plugins/publish/extract_usd_layered.py

@@ -7,6 +7,7 @@ from collections import deque
 import pyblish.api
 import openpype.api
 
+from openpype.pipeline import get_representation_path
 import openpype.hosts.houdini.api.usd as hou_usdlib
 from openpype.hosts.houdini.api.lib import render_rop
 
@@ -308,7 +309,7 @@ class ExtractUSDLayered(openpype.api.Extractor):
             self.log.debug("No existing representation..")
             return False
 
-        old_file = api.get_representation_path(representation)
+        old_file = get_representation_path(representation)
         if not os.path.exists(old_file):
             return False
 

openpype/hosts/maya/api/lib.py

@@ -17,10 +17,16 @@ import bson
 from maya import cmds, mel
 import maya.api.OpenMaya as om
 
-from avalon import api, io, pipeline
+from avalon import api, io
 
 from openpype import lib
 from openpype.api import get_anatomy_settings
+from openpype.pipeline import (
+    discover_loader_plugins,
+    loaders_from_representation,
+    get_representation_path,
+    load_container,
+)
 from .commands import reset_frame_range
 
 
@@ -1580,21 +1586,21 @@ def assign_look_by_version(nodes, version_id):
         log.info("Using look for the first time ..")
 
         # Load file
-        loaders = api.loaders_from_representation(api.discover(api.Loader),
+        _loaders = discover_loader_plugins()
-                                                  representation_id)
+        loaders = loaders_from_representation(_loaders, representation_id)
         Loader = next((i for i in loaders if i.__name__ == "LookLoader"), None)
         if Loader is None:
             raise RuntimeError("Could not find LookLoader, this is a bug")
 
         # Reference the look file
         with maintained_selection():
-            container_node = pipeline.load(Loader, look_representation)
+            container_node = load_container(Loader, look_representation)
 
     # Get container members
     shader_nodes = get_container_members(container_node)
 
     # Load relationships
-    shader_relation = api.get_representation_path(json_representation)
+    shader_relation = get_representation_path(json_representation)
     with open(shader_relation, "r") as f:
         relationships = json.load(f)
 

openpype/hosts/maya/api/pipeline.py

@@ -14,9 +14,17 @@ from avalon.pipeline import AVALON_CONTAINER_ID
 
 import openpype.hosts.maya
 from openpype.tools.utils import host_tools
-from openpype.lib import any_outdated
+from openpype.lib import (
+    any_outdated,
+    register_event_callback,
+    emit_event
+)
 from openpype.lib.path_tools import HostDirmap
-from openpype.pipeline import LegacyCreator
+from openpype.pipeline import (
+    LegacyCreator,
+    register_loader_plugin_path,
+    deregister_loader_plugin_path,
+)
 from openpype.hosts.maya.lib import copy_workspace_mel
 from . import menu, lib
 
@@ -49,13 +57,13 @@ def install():
     pyblish.api.register_host("mayapy")
     pyblish.api.register_host("maya")
 
-    avalon.api.register_plugin_path(avalon.api.Loader, LOAD_PATH)
+    register_loader_plugin_path(LOAD_PATH)
     avalon.api.register_plugin_path(LegacyCreator, CREATE_PATH)
     avalon.api.register_plugin_path(avalon.api.InventoryAction, INVENTORY_PATH)
     log.info(PUBLISH_PATH)
 
     log.info("Installing callbacks ... ")
-    avalon.api.on("init", on_init)
+    register_event_callback("init", on_init)
 
     # Callbacks below are not required for headless mode, the `init` however
     # is important to load referenced Alembics correctly at rendertime.
@@ -69,12 +77,12 @@ def install():
 
     menu.install()
 
-    avalon.api.on("save", on_save)
+    register_event_callback("save", on_save)
-    avalon.api.on("open", on_open)
+    register_event_callback("open", on_open)
-    avalon.api.on("new", on_new)
+    register_event_callback("new", on_new)
-    avalon.api.before("save", on_before_save)
+    register_event_callback("before.save", on_before_save)
-    avalon.api.on("taskChanged", on_task_changed)
+    register_event_callback("taskChanged", on_task_changed)
-    avalon.api.on("before.workfile.save", before_workfile_save)
+    register_event_callback("workfile.save.before", before_workfile_save)
 
 
 def _set_project():
@@ -137,7 +145,7 @@ def _register_callbacks():
 
 
 def _on_maya_initialized(*args):
-    avalon.api.emit("init", args)
+    emit_event("init")
 
     if cmds.about(batch=True):
         log.warning("Running batch mode ...")
@@ -148,15 +156,15 @@ def _on_maya_initialized(*args):
 
 
 def _on_scene_new(*args):
-    avalon.api.emit("new", args)
+    emit_event("new")
 
 
 def _on_scene_save(*args):
-    avalon.api.emit("save", args)
+    emit_event("save")
 
 
 def _on_scene_open(*args):
-    avalon.api.emit("open", args)
+    emit_event("open")
 
 
 def _before_scene_save(return_code, client_data):
@@ -166,7 +174,10 @@ def _before_scene_save(return_code, client_data):
     # in order to block the operation.
     OpenMaya.MScriptUtil.setBool(return_code, True)
 
-    avalon.api.emit("before_save", [return_code, client_data])
+    emit_event(
+        "before.save",
+        {"return_code": return_code}
+    )
 
 
 def uninstall():
@@ -175,7 +186,7 @@ def uninstall():
     pyblish.api.deregister_host("mayapy")
     pyblish.api.deregister_host("maya")
 
-    avalon.api.deregister_plugin_path(avalon.api.Loader, LOAD_PATH)
+    deregister_loader_plugin_path(LOAD_PATH)
     avalon.api.deregister_plugin_path(LegacyCreator, CREATE_PATH)
     avalon.api.deregister_plugin_path(
         avalon.api.InventoryAction, INVENTORY_PATH
@@ -343,7 +354,7 @@ def containerise(name,
     return container
 
 
-def on_init(_):
+def on_init():
     log.info("Running callback on init..")
 
     def safe_deferred(fn):
@@ -384,12 +395,12 @@ def on_init(_):
         safe_deferred(override_toolbox_ui)
 
 
-def on_before_save(return_code, _):
+def on_before_save():
     """Run validation for scene's FPS prior to saving"""
     return lib.validate_fps()
 
 
-def on_save(_):
+def on_save():
     """Automatically add IDs to new nodes
 
     Any transform of a mesh, without an existing ID, is given one
@@ -407,7 +418,7 @@ def on_save(_):
         lib.set_id(node, new_id, overwrite=False)
 
 
-def on_open(_):
+def on_open():
     """On scene open let's assume the containers have changed."""
 
     from Qt import QtWidgets
@@ -455,7 +466,7 @@ def on_open(_):
             dialog.show()
 
 
-def on_new(_):
+def on_new():
     """Set project resolution and fps when create a new file"""
     log.info("Running callback on new..")
     with lib.suspended_refresh():
@@ -471,7 +482,7 @@ def on_new(_):
         lib.set_context_settings()
 
 
-def on_task_changed(*args):
+def on_task_changed():
     """Wrapped function of app initialize and maya's on task changed"""
     # Run
     menu.update_menu_task_label()
@@ -509,7 +520,7 @@ def on_task_changed(*args):
 
 
 def before_workfile_save(event):
-    workdir_path = event.workdir_path
+    workdir_path = event["workdir_path"]
     if workdir_path:
         copy_workspace_mel(workdir_path)
 

openpype/hosts/maya/api/plugin.py

@@ -4,9 +4,12 @@ from maya import cmds
 
 import qargparse
 
-from avalon import api
 from avalon.pipeline import AVALON_CONTAINER_ID
-from openpype.pipeline import LegacyCreator
+from openpype.pipeline import (
+    LegacyCreator,
+    LoaderPlugin,
+    get_representation_path,
+)
 
 from .pipeline import containerise
 from . import lib
@@ -95,7 +98,7 @@ class Creator(LegacyCreator):
         return instance
 
 
-class Loader(api.Loader):
+class Loader(LoaderPlugin):
     hosts = ["maya"]
 
 
@@ -178,7 +181,7 @@ class ReferenceLoader(Loader):
                 loader=self.__class__.__name__
             )
             loaded_containers.append(container)
-            self._organize_containers([ref_node], container)
+            self._organize_containers(nodes, container)
             c += 1
             namespace = None
 
@@ -194,7 +197,7 @@ class ReferenceLoader(Loader):
 
         node = container["objectName"]
 
-        path = api.get_representation_path(representation)
+        path = get_representation_path(representation)
 
         # Get reference node from container members
         members = get_container_members(node)
@@ -247,6 +250,8 @@ class ReferenceLoader(Loader):
 
             self.log.warning("Ignoring file read error:\n%s", exc)
 
+        self._organize_containers(content, container["objectName"])
+
         # Reapply alembic settings.
         if representation["name"] == "abc" and alembic_data:
             alembic_nodes = cmds.ls(
@@ -284,7 +289,6 @@ class ReferenceLoader(Loader):
                 to remove from scene.
 
         """
-
         from maya import cmds
 
         node = container["objectName"]
@@ -318,6 +322,7 @@ class ReferenceLoader(Loader):
     @staticmethod
     def _organize_containers(nodes, container):
         # type: (list, str) -> None
+        """Put containers in loaded data to correct hierarchy."""
         for node in nodes:
             id_attr = "{}.id".format(node)
             if not cmds.attributeQuery("id", node=node, exists=True):

openpype/hosts/maya/api/setdress.py

@@ -8,7 +8,15 @@ import copy
 import six
 from maya import cmds
 
-from avalon import api, io
+from avalon import io
+from openpype.pipeline import (
+    discover_loader_plugins,
+    loaders_from_representation,
+    load_container,
+    update_container,
+    remove_container,
+    get_representation_path,
+)
 from openpype.hosts.maya.api.lib import (
     matrix_equals,
     unique_namespace
@@ -120,12 +128,13 @@ def load_package(filepath, name, namespace=None):
     root = "{}:{}".format(namespace, name)
 
     containers = []
-    all_loaders = api.discover(api.Loader)
+    all_loaders = discover_loader_plugins()
     for representation_id, instances in data.items():
 
         # Find the compatible loaders
-        loaders = api.loaders_from_representation(all_loaders,
+        loaders = loaders_from_representation(
-                                                  representation_id)
+            all_loaders, representation_id
+        )
 
         for instance in instances:
             container = _add(instance=instance,
@@ -180,9 +189,11 @@ def _add(instance, representation_id, loaders, namespace, root="|"):
                         instance['loader'], instance)
             raise RuntimeError("Loader is missing.")
 
-        container = api.load(Loader,
+        container = load_container(
-                             representation_id,
+            Loader,
-                             namespace=instance['namespace'])
+            representation_id,
+            namespace=instance['namespace']
+        )
 
         # Get the root from the loaded container
         loaded_root = get_container_transforms({"objectName": container},
@@ -320,13 +331,13 @@ def update_package(set_container, representation):
         "type": "representation"
     })
 
-    current_file = api.get_representation_path(current_representation)
+    current_file = get_representation_path(current_representation)
     assert current_file.endswith(".json")
     with open(current_file, "r") as fp:
         current_data = json.load(fp)
 
     # Load the new package data
-    new_file = api.get_representation_path(representation)
+    new_file = get_representation_path(representation)
     assert new_file.endswith(".json")
     with open(new_file, "r") as fp:
         new_data = json.load(fp)
@@ -460,12 +471,12 @@ def update_scene(set_container, containers, current_data, new_data, new_file):
                     # considered as new element and added afterwards.
                     processed_containers.pop()
                     processed_namespaces.remove(container_ns)
-                    api.remove(container)
+                    remove_container(container)
                     continue
 
                 # Check whether the conversion can be done by the Loader.
                 # They *must* use the same asset, subset and Loader for
-                # `api.update` to make sense.
+                # `update_container` to make sense.
                 old = io.find_one({
                     "_id": io.ObjectId(representation_current)
                 })
@@ -479,20 +490,21 @@ def update_scene(set_container, containers, current_data, new_data, new_file):
                     continue
 
                 new_version = new["context"]["version"]
-                api.update(container, version=new_version)
+                update_container(container, version=new_version)
 
         else:
             # Remove this container because it's not in the new data
             log.warning("Removing content: %s", container_ns)
-            api.remove(container)
+            remove_container(container)
 
     # Add new assets
-    all_loaders = api.discover(api.Loader)
+    all_loaders = discover_loader_plugins()
     for representation_id, instances in new_data.items():
 
         # Find the compatible loaders
-        loaders = api.loaders_from_representation(all_loaders,
+        loaders = loaders_from_representation(
-                                                  representation_id)
+            all_loaders, representation_id
+        )
         for instance in instances:
 
             # Already processed in update functionality
@@ -517,7 +529,7 @@ def update_scene(set_container, containers, current_data, new_data, new_file):
 def compare_representations(old, new):
     """Check if the old representation given can be updated
 
-    Due to limitations of the `api.update` function we cannot allow
+    Due to limitations of the `update_container` function we cannot allow
     differences in the following data:
 
     * Representation name (extension)

openpype/hosts/maya/plugins/inventory/import_modelrender.py

@@ -1,5 +1,9 @@
 import json
-from avalon import api, io, pipeline
+from avalon import api, io
+from openpype.pipeline import (
+    get_representation_context,
+    get_representation_path_from_context,
+)
 from openpype.hosts.maya.api.lib import (
     maintained_selection,
     apply_shaders
@@ -73,11 +77,11 @@ class ImportModelRender(api.InventoryAction):
             "name": self.look_data_type,
         })
 
-        context = pipeline.get_representation_context(look_repr["_id"])
+        context = get_representation_context(look_repr["_id"])
-        maya_file = pipeline.get_representation_path_from_context(context)
+        maya_file = get_representation_path_from_context(context)
 
-        context = pipeline.get_representation_context(json_repr["_id"])
+        context = get_representation_context(json_repr["_id"])
-        json_file = pipeline.get_representation_path_from_context(context)
+        json_file = get_representation_path_from_context(context)
 
         # Import the look file
         with maintained_selection():

openpype/hosts/maya/plugins/load/actions.py

@@ -2,14 +2,14 @@
 
 """
 
-from avalon import api
+from openpype.pipeline import load
 from openpype.hosts.maya.api.lib import (
     maintained_selection,
     unique_namespace
 )
 
 
-class SetFrameRangeLoader(api.Loader):
+class SetFrameRangeLoader(load.LoaderPlugin):
     """Specific loader of Alembic for the avalon.animation family"""
 
     families = ["animation",
@@ -43,7 +43,7 @@ class SetFrameRangeLoader(api.Loader):
                              animationEndTime=end)
 
 
-class SetFrameRangeWithHandlesLoader(api.Loader):
+class SetFrameRangeWithHandlesLoader(load.LoaderPlugin):
     """Specific loader of Alembic for the avalon.animation family"""
 
     families = ["animation",
@@ -81,7 +81,7 @@ class SetFrameRangeWithHandlesLoader(api.Loader):
                              animationEndTime=end)
 
 
-class ImportMayaLoader(api.Loader):
+class ImportMayaLoader(load.LoaderPlugin):
     """Import action for Maya (unmanaged)
 
     Warning:

openpype/hosts/maya/plugins/load/load_ass.py

@@ -1,8 +1,11 @@
 import os
 import clique
 
-from avalon import api
 from openpype.api import get_project_settings
+from openpype.pipeline import (
+    load,
+    get_representation_path
+)
 import openpype.hosts.maya.api.plugin
 from openpype.hosts.maya.api.plugin import get_reference_node
 from openpype.hosts.maya.api.lib import (
@@ -106,7 +109,7 @@ class AssProxyLoader(openpype.hosts.maya.api.plugin.ReferenceLoader):
         node = container["objectName"]
 
         representation["context"].pop("frame", None)
-        path = api.get_representation_path(representation)
+        path = get_representation_path(representation)
         print(path)
         # path = self.fname
         print(self.fname)
@@ -164,7 +167,7 @@ class AssProxyLoader(openpype.hosts.maya.api.plugin.ReferenceLoader):
                      type="string")
 
 
-class AssStandinLoader(api.Loader):
+class AssStandinLoader(load.LoaderPlugin):
     """Load .ASS file as standin"""
 
     families = ["ass"]
@@ -240,7 +243,7 @@ class AssStandinLoader(api.Loader):
 
         import pymel.core as pm
 
-        path = api.get_representation_path(representation)
+        path = get_representation_path(representation)
 
         files_in_path = os.listdir(os.path.split(path)[0])
         sequence = 0

openpype/hosts/maya/plugins/load/load_assembly.py

@@ -1,7 +1,10 @@
-from avalon import api
+from openpype.pipeline import (
+    load,
+    remove_container
+)
 
 
-class AssemblyLoader(api.Loader):
+class AssemblyLoader(load.LoaderPlugin):
 
     families = ["assembly"]
     representations = ["json"]
@@ -48,13 +51,11 @@ class AssemblyLoader(api.Loader):
     def update(self, container, representation):
 
         from openpype import setdress
-        return setdress.update_package(container,
+        return setdress.update_package(container, representation)
-                                           representation)
 
     def remove(self, container):
         """Remove all sub containers"""
 
-        from avalon import api
         from openpype import setdress
         import maya.cmds as cmds
 
@@ -63,7 +64,7 @@ class AssemblyLoader(api.Loader):
         for member_container in member_containers:
             self.log.info("Removing container %s",
                           member_container['objectName'])
-            api.remove(member_container)
+            remove_container(member_container)
 
         # Remove alembic hierarchy reference
         # TODO: Check whether removing all contained references is safe enough

openpype/hosts/maya/plugins/load/load_audio.py

@@ -1,10 +1,14 @@
 from maya import cmds, mel
-from avalon import api, io
+from avalon import io
+from openpype.pipeline import (
+    load,
+    get_representation_path
+)
 from openpype.hosts.maya.api.pipeline import containerise
 from openpype.hosts.maya.api.lib import unique_namespace
 
 
-class AudioLoader(api.Loader):
+class AudioLoader(load.LoaderPlugin):
     """Specific loader of audio."""
 
     families = ["audio"]
@@ -51,7 +55,7 @@ class AudioLoader(api.Loader):
 
         assert audio_node is not None, "Audio node not found."
 
-        path = api.get_representation_path(representation)
+        path = get_representation_path(representation)
         audio_node.filename.set(path)
         cmds.setAttr(
             container["objectName"] + ".representation",

openpype/hosts/maya/plugins/load/load_gpucache.py

@@ -1,9 +1,13 @@
 import os
-from avalon import api
+
+from openpype.pipeline import (
+    load,
+    get_representation_path
+)
 from openpype.api import get_project_settings
 
 
-class GpuCacheLoader(api.Loader):
+class GpuCacheLoader(load.LoaderPlugin):
     """Load model Alembic as gpuCache"""
 
     families = ["model"]
@@ -73,7 +77,7 @@ class GpuCacheLoader(api.Loader):
 
         import maya.cmds as cmds
 
-        path = api.get_representation_path(representation)
+        path = get_representation_path(representation)
 
         # Update the cache
         members = cmds.sets(container['objectName'], query=True)

openpype/hosts/maya/plugins/load/load_image_plane.py

@@ -1,6 +1,10 @@
 from Qt import QtWidgets, QtCore
 
-from avalon import api, io
+from avalon import io
+from openpype.pipeline import (
+    load,
+    get_representation_path
+)
 from openpype.hosts.maya.api.pipeline import containerise
 from openpype.hosts.maya.api.lib import unique_namespace
 
@@ -74,7 +78,7 @@ class CameraWindow(QtWidgets.QDialog):
         self.close()
 
 
-class ImagePlaneLoader(api.Loader):
+class ImagePlaneLoader(load.LoaderPlugin):
     """Specific loader of plate for image planes on selected camera."""
 
     families = ["image", "plate", "render"]
@@ -203,7 +207,7 @@ class ImagePlaneLoader(api.Loader):
 
         assert image_plane_shape is not None, "Image plane not found."
 
-        path = api.get_representation_path(representation)
+        path = get_representation_path(representation)
         image_plane_shape.imageName.set(path)
         cmds.setAttr(
             container["objectName"] + ".representation",

openpype/hosts/maya/plugins/load/load_look.py

@@ -5,7 +5,8 @@ from collections import defaultdict
 
 from Qt import QtWidgets
 
-from avalon import api, io
+from avalon import io
+from openpype.pipeline import get_representation_path
 import openpype.hosts.maya.api.plugin
 from openpype.hosts.maya.api import lib
 from openpype.widgets.message_window import ScrollMessageBox
@@ -77,7 +78,7 @@ class LookLoader(openpype.hosts.maya.api.plugin.ReferenceLoader):
         })
 
         # Load relationships
-        shader_relation = api.get_representation_path(json_representation)
+        shader_relation = get_representation_path(json_representation)
         with open(shader_relation, "r") as f:
             json_data = json.load(f)
 

openpype/hosts/maya/plugins/load/load_matchmove.py

@@ -1,8 +1,8 @@
-from avalon import api
 from maya import mel
+from openpype.pipeline import load
 
 
-class MatchmoveLoader(api.Loader):
+class MatchmoveLoader(load.LoaderPlugin):
     """
     This will run matchmove script to create track in scene.
 

openpype/hosts/maya/plugins/load/load_redshift_proxy.py

@@ -5,8 +5,11 @@ import clique
 
 import maya.cmds as cmds
 
-from avalon import api
 from openpype.api import get_project_settings
+from openpype.pipeline import (
+    load,
+    get_representation_path
+)
 from openpype.hosts.maya.api.lib import (
     namespaced,
     maintained_selection,
@@ -15,7 +18,7 @@ from openpype.hosts.maya.api.lib import (
 from openpype.hosts.maya.api.pipeline import containerise
 
 
-class RedshiftProxyLoader(api.Loader):
+class RedshiftProxyLoader(load.LoaderPlugin):
     """Load Redshift proxy"""
 
     families = ["redshiftproxy"]
@@ -78,7 +81,7 @@ class RedshiftProxyLoader(api.Loader):
         rs_meshes = cmds.ls(members, type="RedshiftProxyMesh")
         assert rs_meshes, "Cannot find RedshiftProxyMesh in container"
 
-        filename = api.get_representation_path(representation)
+        filename = get_representation_path(representation)
 
         for rs_mesh in rs_meshes:
             cmds.setAttr("{}.fileName".format(rs_mesh),

openpype/hosts/maya/plugins/load/load_reference.py

@@ -121,18 +121,10 @@ class ReferenceLoader(openpype.hosts.maya.api.plugin.ReferenceLoader):
             if family == "rig":
                 self._post_process_rig(name, namespace, context, options)
             else:
-
                 if "translate" in options:
                     cmds.setAttr(group_name + ".t", *options["translate"])
-
             return new_nodes
 
-    def load(self, context, name=None, namespace=None, options=None):
-        container = super(ReferenceLoader, self).load(
-            context, name, namespace, options)
-        # clean containers if present to AVALON_CONTAINERS
-        self._organize_containers(self[:], container[0])
-
     def switch(self, container, representation):
         self.update(container, representation)
 

openpype/hosts/maya/plugins/load/load_rendersetup.py

@@ -7,10 +7,13 @@ instance.
 """
 
 import json
-import six
 import sys
+import six
 
-from avalon import api
+from openpype.pipeline import (
+    load,
+    get_representation_path
+)
 from openpype.hosts.maya.api import lib
 from openpype.hosts.maya.api.pipeline import containerise
 
@@ -18,7 +21,7 @@ from maya import cmds
 import maya.app.renderSetup.model.renderSetup as renderSetup
 
 
-class RenderSetupLoader(api.Loader):
+class RenderSetupLoader(load.LoaderPlugin):
     """Load json preset for RenderSetup overwriting current one."""
 
     families = ["rendersetup"]
@@ -87,7 +90,7 @@ class RenderSetupLoader(api.Loader):
             "Render setup setting will be overwritten by new version. All "
             "setting specified by user not included in loaded version "
             "will be lost.")
-        path = api.get_representation_path(representation)
+        path = get_representation_path(representation)
         with open(path, "r") as file:
             try:
                 renderSetup.instance().decode(

openpype/hosts/maya/plugins/load/load_vdb_to_redshift.py

@@ -1,9 +1,10 @@
 import os
-from avalon import api
+
 from openpype.api import get_project_settings
+from openpype.pipeline import load
 
 
-class LoadVDBtoRedShift(api.Loader):
+class LoadVDBtoRedShift(load.LoaderPlugin):
     """Load OpenVDB in a Redshift Volume Shape"""
 
     families = ["vdbcache"]

openpype/hosts/maya/plugins/load/load_vdb_to_vray.py

@@ -1,6 +1,10 @@
 import os
-from avalon import api
+
 from openpype.api import get_project_settings
+from openpype.pipeline import (
+    load,
+    get_representation_path
+)
 
 from maya import cmds
 
@@ -69,7 +73,7 @@ def _fix_duplicate_vvg_callbacks():
                     matched.add(callback)
 
 
-class LoadVDBtoVRay(api.Loader):
+class LoadVDBtoVRay(load.LoaderPlugin):
 
     families = ["vdbcache"]
     representations = ["vdb"]
@@ -252,7 +256,7 @@ class LoadVDBtoVRay(api.Loader):
 
     def update(self, container, representation):
 
-        path = api.get_representation_path(representation)
+        path = get_representation_path(representation)
 
         # Find VRayVolumeGrid
         members = cmds.sets(container['objectName'], query=True)

openpype/hosts/maya/plugins/load/load_vrayproxy.py

@@ -9,8 +9,12 @@ import os
 
 import maya.cmds as cmds
 
-from avalon import api, io
+from avalon import io
 from openpype.api import get_project_settings
+from openpype.pipeline import (
+    load,
+    get_representation_path
+)
 from openpype.hosts.maya.api.lib import (
     maintained_selection,
     namespaced,
@@ -19,7 +23,7 @@ from openpype.hosts.maya.api.lib import (
 from openpype.hosts.maya.api.pipeline import containerise
 
 
-class VRayProxyLoader(api.Loader):
+class VRayProxyLoader(load.LoaderPlugin):
     """Load VRay Proxy with Alembic or VrayMesh."""
 
     families = ["vrayproxy", "model", "pointcache", "animation"]
@@ -100,7 +104,10 @@ class VRayProxyLoader(api.Loader):
         assert vraymeshes, "Cannot find VRayMesh in container"
 
         #  get all representations for this version
-        filename = self._get_abc(representation["parent"]) or api.get_representation_path(representation)  # noqa: E501
+        filename = (
+            self._get_abc(representation["parent"])
+            or get_representation_path(representation)
+        )
 
         for vray_mesh in vraymeshes:
             cmds.setAttr("{}.fileName".format(vray_mesh),
@@ -185,7 +192,7 @@ class VRayProxyLoader(api.Loader):
 
         if abc_rep:
             self.log.debug("Found, we'll link alembic to vray proxy.")
-            file_name = api.get_representation_path(abc_rep)
+            file_name = get_representation_path(abc_rep)
             self.log.debug("File: {}".format(self.fname))
             return file_name
 

openpype/hosts/maya/plugins/load/load_vrayscene.py

@@ -1,8 +1,11 @@
 # -*- coding: utf-8 -*-
 import os
 import maya.cmds as cmds  # noqa
-from avalon import api
 from openpype.api import get_project_settings
+from openpype.pipeline import (
+    load,
+    get_representation_path
+)
 from openpype.hosts.maya.api.lib import (
     maintained_selection,
     namespaced,
@@ -11,7 +14,7 @@ from openpype.hosts.maya.api.lib import (
 from openpype.hosts.maya.api.pipeline import containerise
 
 
-class VRaySceneLoader(api.Loader):
+class VRaySceneLoader(load.LoaderPlugin):
     """Load Vray scene"""
 
     families = ["vrayscene_layer"]
@@ -78,7 +81,7 @@ class VRaySceneLoader(api.Loader):
         vraymeshes = cmds.ls(members, type="VRayScene")
         assert vraymeshes, "Cannot find VRayScene in container"
 
-        filename = api.get_representation_path(representation)
+        filename = get_representation_path(representation)
 
         for vray_mesh in vraymeshes:
             cmds.setAttr("{}.FilePath".format(vray_mesh),

openpype/hosts/maya/plugins/load/load_yeti_cache.py

@@ -7,13 +7,17 @@ from pprint import pprint
 
 from maya import cmds
 
-from avalon import api, io
+from avalon import io
 from openpype.api import get_project_settings
+from openpype.pipeline import (
+    load,
+    get_representation_path
+)
 from openpype.hosts.maya.api import lib
 from openpype.hosts.maya.api.pipeline import containerise
 
 
-class YetiCacheLoader(api.Loader):
+class YetiCacheLoader(load.LoaderPlugin):
 
     families = ["yeticache", "yetiRig"]
     representations = ["fur"]
@@ -121,8 +125,8 @@ class YetiCacheLoader(api.Loader):
             "cannot find fursettings representation"
         )
 
-        settings_fname = api.get_representation_path(fur_settings)
+        settings_fname = get_representation_path(fur_settings)
-        path = api.get_representation_path(representation)
+        path = get_representation_path(representation)
         # Get all node data
         with open(settings_fname, "r") as fp:
             settings = json.load(fp)

openpype/hosts/maya/plugins/publish/collect_render.py

@@ -50,6 +50,7 @@ import maya.app.renderSetup.model.renderSetup as renderSetup
 import pyblish.api
 
 from avalon import api
+from openpype.lib import get_formatted_current_time
 from openpype.hosts.maya.api.lib_renderproducts import get as get_layer_render_products  # noqa: E501
 from openpype.hosts.maya.api import lib
 
@@ -328,7 +329,7 @@ class CollectMayaRender(pyblish.api.ContextPlugin):
                 "family": "renderlayer",
                 "families": ["renderlayer"],
                 "asset": asset,
-                "time": api.time(),
+                "time": get_formatted_current_time(),
                 "author": context.data["user"],
                 # Add source to allow tracing back to the scene from
                 # which was submitted originally

openpype/hosts/maya/plugins/publish/collect_vrayscene.py

@@ -7,6 +7,7 @@ from maya import cmds
 
 import pyblish.api
 from avalon import api
+from openpype.lib import get_formatted_current_time
 from openpype.hosts.maya.api import lib
 
 
@@ -117,7 +118,7 @@ class CollectVrayScene(pyblish.api.InstancePlugin):
                 "family": "vrayscene_layer",
                 "families": ["vrayscene_layer"],
                 "asset": api.Session["AVALON_ASSET"],
-                "time": api.time(),
+                "time": get_formatted_current_time(),
                 "author": context.data["user"],
                 # Add source to allow tracing back to the scene from
                 # which was submitted originally

openpype/hosts/maya/plugins/publish/extract_maya_scene_raw.py

@@ -58,16 +58,11 @@ class ExtractMayaSceneRaw(openpype.api.Extractor):
         else:
             members = instance[:]
 
-        loaded_containers = None
-        if set(self.add_for_families).intersection(
-                set(instance.data.get("families")),
-                set(instance.data.get("family").lower())):
-            loaded_containers = self._add_loaded_containers(members)
-
         selection = members
-        if loaded_containers:
+        if set(self.add_for_families).intersection(
-            self.log.info(loaded_containers)
+                set(instance.data.get("families", []))) or \
-            selection += loaded_containers
+                instance.data.get("family") in self.add_for_families:
+            selection += self._get_loaded_containers(members)
 
         # Perform extraction
         self.log.info("Performing extraction ...")
@@ -97,15 +92,15 @@ class ExtractMayaSceneRaw(openpype.api.Extractor):
         self.log.info("Extracted instance '%s' to: %s" % (instance.name, path))
 
     @staticmethod
-    def _add_loaded_containers(members):
+    def _get_loaded_containers(members):
         # type: (list) -> list
-        refs_to_include = [
+        refs_to_include = {
-            cmds.referenceQuery(ref, referenceNode=True)
+            cmds.referenceQuery(node, referenceNode=True)
-            for ref in members
+            for node in members
-            if cmds.referenceQuery(ref, isNodeReferenced=True)
+            if cmds.referenceQuery(node, isNodeReferenced=True)
-        ]
+        }
 
-        refs_to_include = set(refs_to_include)
+        members_with_refs = refs_to_include.union(members)
 
         obj_sets = cmds.ls("*.id", long=True, type="objectSet", recursive=True,
                            objectsOnly=True)
@@ -121,7 +116,7 @@ class ExtractMayaSceneRaw(openpype.api.Extractor):
                 continue
 
             set_content = set(cmds.sets(obj_set, query=True))
-            if set_content.intersection(refs_to_include):
+            if set_content.intersection(members_with_refs):
                 loaded_containers.append(obj_set)
 
         return loaded_containers

openpype/hosts/nuke/api/pipeline.py

@@ -14,7 +14,12 @@ from openpype.api import (
     BuildWorkfile,
     get_current_project_settings
 )
-from openpype.pipeline import LegacyCreator
+from openpype.lib import register_event_callback
+from openpype.pipeline import (
+    LegacyCreator,
+    register_loader_plugin_path,
+    deregister_loader_plugin_path,
+)
 from openpype.tools.utils import host_tools
 
 from .command import viewer_update_and_undo_stop
@@ -98,13 +103,13 @@ def install():
 
     log.info("Registering Nuke plug-ins..")
     pyblish.api.register_plugin_path(PUBLISH_PATH)
-    avalon.api.register_plugin_path(avalon.api.Loader, LOAD_PATH)
+    register_loader_plugin_path(LOAD_PATH)
     avalon.api.register_plugin_path(LegacyCreator, CREATE_PATH)
     avalon.api.register_plugin_path(avalon.api.InventoryAction, INVENTORY_PATH)
 
     # Register Avalon event for workfiles loading.
-    avalon.api.on("workio.open_file", check_inventory_versions)
+    register_event_callback("workio.open_file", check_inventory_versions)
-    avalon.api.on("taskChanged", change_context_label)
+    register_event_callback("taskChanged", change_context_label)
 
     pyblish.api.register_callback(
         "instanceToggled", on_pyblish_instance_toggled)
@@ -124,7 +129,7 @@ def uninstall():
     log.info("Deregistering Nuke plug-ins..")
     pyblish.deregister_host("nuke")
     pyblish.api.deregister_plugin_path(PUBLISH_PATH)
-    avalon.api.deregister_plugin_path(avalon.api.Loader, LOAD_PATH)
+    deregister_loader_plugin_path(LOAD_PATH)
     avalon.api.deregister_plugin_path(LegacyCreator, CREATE_PATH)
 
     pyblish.api.deregister_callback(
@@ -227,7 +232,7 @@ def _uninstall_menu():
         menu.removeItem(item.name())
 
 
-def change_context_label(*args):
+def change_context_label():
     menubar = nuke.menu("Nuke")
     menu = menubar.findItem(MENU_LABEL)
 

openpype/hosts/nuke/api/plugin.py

@@ -4,10 +4,11 @@ import string
 
 import nuke
 
-import avalon.api
-
 from openpype.api import get_current_project_settings
-from openpype.pipeline import LegacyCreator
+from openpype.pipeline import (
+    LegacyCreator,
+    LoaderPlugin,
+)
 from .lib import (
     Knobby,
     check_subsetname_exists,
@@ -85,7 +86,7 @@ def get_review_presets_config():
     return [str(name) for name, _prop in outputs.items()]
 
 
-class NukeLoader(avalon.api.Loader):
+class NukeLoader(LoaderPlugin):
     container_id_knob = "containerId"
     container_id = None
 

openpype/hosts/nuke/plugins/inventory/repair_old_loaders.py

@@ -1,4 +1,4 @@
-from avalon import api, style
+from avalon import api
 from openpype.api import Logger
 from openpype.hosts.nuke.api.lib import set_avalon_knob_data
 
@@ -7,7 +7,7 @@ class RepairOldLoaders(api.InventoryAction):
 
     label = "Repair Old Loaders"
     icon = "gears"
-    color = style.colors.alert
+    color = "#cc0000"
 
     log = Logger.get_logger(__name__)
 

openpype/hosts/nuke/plugins/load/actions.py

@@ -2,13 +2,13 @@
 
 """
 
-from avalon import api
 from openpype.api import Logger
+from openpype.pipeline import load
 
 log = Logger().get_logger(__name__)
 
 
-class SetFrameRangeLoader(api.Loader):
+class SetFrameRangeLoader(load.LoaderPlugin):
     """Specific loader of Alembic for the avalon.animation family"""
 
     families = ["animation",
@@ -42,7 +42,7 @@ class SetFrameRangeLoader(api.Loader):
         lib.update_frame_range(start, end)
 
 
-class SetFrameRangeWithHandlesLoader(api.Loader):
+class SetFrameRangeWithHandlesLoader(load.LoaderPlugin):
     """Specific loader of Alembic for the avalon.animation family"""
 
     families = ["animation",

openpype/hosts/nuke/plugins/load/load_backdrop.py

@@ -1,7 +1,11 @@
-from avalon import api, style, io
+from avalon import io
 import nuke
 import nukescripts
 
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 from openpype.hosts.nuke.api.lib import (
     find_free_space_to_paste_nodes,
     maintained_selection,
@@ -14,7 +18,7 @@ from openpype.hosts.nuke.api.commands import viewer_update_and_undo_stop
 from openpype.hosts.nuke.api import containerise, update_container
 
 
-class LoadBackdropNodes(api.Loader):
+class LoadBackdropNodes(load.LoaderPlugin):
     """Loading Published Backdrop nodes (workfile, nukenodes)"""
 
     representations = ["nk"]
@@ -23,7 +27,7 @@ class LoadBackdropNodes(api.Loader):
     label = "Iport Nuke Nodes"
     order = 0
     icon = "eye"
-    color = style.colors.light
+    color = "white"
     node_color = "0x7533c1ff"
 
     def load(self, context, name, namespace, data):
@@ -191,7 +195,7 @@ class LoadBackdropNodes(api.Loader):
         # get corresponding node
         GN = nuke.toNode(container['objectName'])
 
-        file = api.get_representation_path(representation).replace("\\", "/")
+        file = get_representation_path(representation).replace("\\", "/")
         context = representation["context"]
         name = container['name']
         version_data = version.get("data", {})

openpype/hosts/nuke/plugins/load/load_camera_abc.py

@@ -1,6 +1,10 @@
 import nuke
 
-from avalon import api, io
+from avalon import io
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 from openpype.hosts.nuke.api import (
     containerise,
     update_container,
@@ -11,7 +15,7 @@ from openpype.hosts.nuke.api.lib import (
 )
 
 
-class AlembicCameraLoader(api.Loader):
+class AlembicCameraLoader(load.LoaderPlugin):
     """
     This will load alembic camera into script.
     """
@@ -127,7 +131,7 @@ class AlembicCameraLoader(api.Loader):
             data_imprint.update({k: version_data[k]})
 
         # getting file path
-        file = api.get_representation_path(representation).replace("\\", "/")
+        file = get_representation_path(representation).replace("\\", "/")
 
         with maintained_selection():
             camera_node = nuke.toNode(object_name)

openpype/hosts/nuke/plugins/load/load_clip.py

@@ -1,7 +1,8 @@
 import nuke
 import qargparse
-from avalon import api, io
+from avalon import io
 
+from openpype.pipeline import get_representation_path
 from openpype.hosts.nuke.api.lib import (
     get_imageio_input_colorspace,
     maintained_selection
@@ -41,6 +42,9 @@ class LoadClip(plugin.NukeLoader):
     icon = "file-video-o"
     color = "white"
 
+    # Loaded from settings
+    _representations = []
+
     script_start = int(nuke.root()["first_frame"].value())
 
     # option gui
@@ -186,7 +190,7 @@ class LoadClip(plugin.NukeLoader):
         is_sequence = len(representation["files"]) > 1
 
         read_node = nuke.toNode(container['objectName'])
-        file = api.get_representation_path(representation).replace("\\", "/")
+        file = get_representation_path(representation).replace("\\", "/")
 
         start_at_workfile = bool("start at" in read_node['frame_mode'].value())
 

openpype/hosts/nuke/plugins/load/load_effects.py

@@ -1,7 +1,13 @@
 import json
 from collections import OrderedDict
 import nuke
-from avalon import api, style, io
+
+from avalon import io
+
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 from openpype.hosts.nuke.api import (
     containerise,
     update_container,
@@ -9,7 +15,7 @@ from openpype.hosts.nuke.api import (
 )
 
 
-class LoadEffects(api.Loader):
+class LoadEffects(load.LoaderPlugin):
     """Loading colorspace soft effect exported from nukestudio"""
 
     representations = ["effectJson"]
@@ -18,7 +24,7 @@ class LoadEffects(api.Loader):
     label = "Load Effects - nodes"
     order = 0
     icon = "cc"
-    color = style.colors.light
+    color = "white"
     ignore_attr = ["useLifetime"]
 
 
@@ -149,7 +155,7 @@ class LoadEffects(api.Loader):
         # get corresponding node
         GN = nuke.toNode(container['objectName'])
 
-        file = api.get_representation_path(representation).replace("\\", "/")
+        file = get_representation_path(representation).replace("\\", "/")
         name = container['name']
         version_data = version.get("data", {})
         vname = version.get("name", None)

openpype/hosts/nuke/plugins/load/load_effects_ip.py

@@ -3,7 +3,12 @@ from collections import OrderedDict
 
 import nuke
 
-from avalon import api, style, io
+from avalon import io
+
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 from openpype.hosts.nuke.api import lib
 from openpype.hosts.nuke.api import (
     containerise,
@@ -12,7 +17,7 @@ from openpype.hosts.nuke.api import (
 )
 
 
-class LoadEffectsInputProcess(api.Loader):
+class LoadEffectsInputProcess(load.LoaderPlugin):
     """Loading colorspace soft effect exported from nukestudio"""
 
     representations = ["effectJson"]
@@ -21,7 +26,7 @@ class LoadEffectsInputProcess(api.Loader):
     label = "Load Effects - Input Process"
     order = 0
     icon = "eye"
-    color = style.colors.alert
+    color = "#cc0000"
     ignore_attr = ["useLifetime"]
 
     def load(self, context, name, namespace, data):
@@ -156,7 +161,7 @@ class LoadEffectsInputProcess(api.Loader):
         # get corresponding node
         GN = nuke.toNode(container['objectName'])
 
-        file = api.get_representation_path(representation).replace("\\", "/")
+        file = get_representation_path(representation).replace("\\", "/")
         name = container['name']
         version_data = version.get("data", {})
         vname = version.get("name", None)

openpype/hosts/nuke/plugins/load/load_gizmo.py

@@ -1,5 +1,11 @@
 import nuke
-from avalon import api, style, io
+
+from avalon import io
+
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 from openpype.hosts.nuke.api.lib import (
     maintained_selection,
     get_avalon_knob_data,
@@ -12,7 +18,7 @@ from openpype.hosts.nuke.api import (
 )
 
 
-class LoadGizmo(api.Loader):
+class LoadGizmo(load.LoaderPlugin):
     """Loading nuke Gizmo"""
 
     representations = ["gizmo"]
@@ -21,7 +27,7 @@ class LoadGizmo(api.Loader):
     label = "Load Gizmo"
     order = 0
     icon = "dropbox"
-    color = style.colors.light
+    color = "white"
     node_color = "0x75338eff"
 
     def load(self, context, name, namespace, data):
@@ -103,7 +109,7 @@ class LoadGizmo(api.Loader):
         # get corresponding node
         GN = nuke.toNode(container['objectName'])
 
-        file = api.get_representation_path(representation).replace("\\", "/")
+        file = get_representation_path(representation).replace("\\", "/")
         name = container['name']
         version_data = version.get("data", {})
         vname = version.get("name", None)

openpype/hosts/nuke/plugins/load/load_gizmo_ip.py

@@ -1,5 +1,11 @@
-from avalon import api, style, io
 import nuke
+
+from avalon import io
+
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 from openpype.hosts.nuke.api.lib import (
     maintained_selection,
     create_backdrop,
@@ -13,7 +19,7 @@ from openpype.hosts.nuke.api import (
 )
 
 
-class LoadGizmoInputProcess(api.Loader):
+class LoadGizmoInputProcess(load.LoaderPlugin):
     """Loading colorspace soft effect exported from nukestudio"""
 
     representations = ["gizmo"]
@@ -22,7 +28,7 @@ class LoadGizmoInputProcess(api.Loader):
     label = "Load Gizmo - Input Process"
     order = 0
     icon = "eye"
-    color = style.colors.alert
+    color = "#cc0000"
     node_color = "0x7533c1ff"
 
     def load(self, context, name, namespace, data):
@@ -109,7 +115,7 @@ class LoadGizmoInputProcess(api.Loader):
         # get corresponding node
         GN = nuke.toNode(container['objectName'])
 
-        file = api.get_representation_path(representation).replace("\\", "/")
+        file = get_representation_path(representation).replace("\\", "/")
         name = container['name']
         version_data = version.get("data", {})
         vname = version.get("name", None)

openpype/hosts/nuke/plugins/load/load_image.py

@@ -1,8 +1,12 @@
 import nuke
 
 import qargparse
-from avalon import api, io
+from avalon import io
 
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 from openpype.hosts.nuke.api.lib import (
     get_imageio_input_colorspace
 )
@@ -13,7 +17,7 @@ from openpype.hosts.nuke.api import (
 )
 
 
-class LoadImage(api.Loader):
+class LoadImage(load.LoaderPlugin):
     """Load still image into Nuke"""
 
     families = [
@@ -32,6 +36,9 @@ class LoadImage(api.Loader):
     icon = "image"
     color = "white"
 
+    # Loaded from settings
+    _representations = []
+
     node_name_template = "{class_name}_{ext}"
 
     options = [
@@ -161,7 +168,7 @@ class LoadImage(api.Loader):
 
         repr_cont = representation["context"]
 
-        file = api.get_representation_path(representation)
+        file = get_representation_path(representation)
 
         if not file:
             repr_id = representation["_id"]

openpype/hosts/nuke/plugins/load/load_matchmove.py

@@ -1,8 +1,8 @@
-from avalon import api
 import nuke
+from openpype.pipeline import load
 
 
-class MatchmoveLoader(api.Loader):
+class MatchmoveLoader(load.LoaderPlugin):
     """
     This will run matchmove script to create track in script.
     """

openpype/hosts/nuke/plugins/load/load_model.py

@@ -1,5 +1,9 @@
 import nuke
-from avalon import api, io
+from avalon import io
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 from openpype.hosts.nuke.api.lib import maintained_selection
 from openpype.hosts.nuke.api import (
     containerise,
@@ -8,7 +12,7 @@ from openpype.hosts.nuke.api import (
 )
 
 
-class AlembicModelLoader(api.Loader):
+class AlembicModelLoader(load.LoaderPlugin):
     """
     This will load alembic model into script.
     """
@@ -124,7 +128,7 @@ class AlembicModelLoader(api.Loader):
             data_imprint.update({k: version_data[k]})
 
         # getting file path
-        file = api.get_representation_path(representation).replace("\\", "/")
+        file = get_representation_path(representation).replace("\\", "/")
 
         with maintained_selection():
             model_node = nuke.toNode(object_name)

openpype/hosts/nuke/plugins/load/load_script_precomp.py

@@ -1,5 +1,11 @@
 import nuke
-from avalon import api, style, io
+
+from avalon import io
+
+from openpype.pipeline import (
+    load,
+    get_representation_path,
+)
 from openpype.hosts.nuke.api.lib import get_avalon_knob_data
 from openpype.hosts.nuke.api import (
     containerise,
@@ -8,7 +14,7 @@ from openpype.hosts.nuke.api import (
 )
 
 
-class LinkAsGroup(api.Loader):
+class LinkAsGroup(load.LoaderPlugin):
     """Copy the published file to be pasted at the desired location"""
 
     representations = ["nk"]
@@ -17,7 +23,7 @@ class LinkAsGroup(api.Loader):
     label = "Load Precomp"
     order = 0
     icon = "file"
-    color = style.colors.alert
+    color = "#cc0000"
 
     def load(self, context, name, namespace, data):
         # for k, v in context.items():
@@ -108,7 +114,7 @@ class LinkAsGroup(api.Loader):
         """
         node = nuke.toNode(container['objectName'])
 
-        root = api.get_representation_path(representation).replace("\\", "/")
+        root = get_representation_path(representation).replace("\\", "/")
 
         # Get start frame from version data
         version = io.find_one({

openpype/hosts/nuke/plugins/publish/precollect_writes.py

@@ -3,8 +3,9 @@ import re
 from pprint import pformat
 import nuke
 import pyblish.api
+from avalon import io
 import openpype.api as pype
-from avalon import io, api
+from openpype.pipeline import get_representation_path
 
 
 @pyblish.api.log
@@ -182,7 +183,7 @@ class CollectNukeWrites(pyblish.api.InstancePlugin):
         if repre_doc:
             instance.data["audio"] = [{
                 "offset": 0,
-                "filename": api.get_representation_path(repre_doc)
+                "filename": get_representation_path(repre_doc)
             }]
 
         self.log.debug("instance.data: {}".format(pformat(instance.data)))

openpype/hosts/nuke/plugins/publish/validate_read_legacy.py

@@ -1,12 +1,16 @@
 import os
-import toml
 
 import nuke
 
+import toml
 import pyblish.api
-from avalon import api
 from bson.objectid import ObjectId
 
+from openpype.pipeline import (
+    discover_loader_plugins,
+    load_container,
+)
+
 
 class RepairReadLegacyAction(pyblish.api.Action):
 
@@ -49,13 +53,13 @@ class RepairReadLegacyAction(pyblish.api.Action):
                 loader_name = "LoadMov"
 
             loader_plugin = None
-            for Loader in api.discover(api.Loader):
+            for Loader in discover_loader_plugins():
                 if Loader.__name__ != loader_name:
                     continue
 
                 loader_plugin = Loader
 
-            api.load(
+            load_container(
                 Loader=loader_plugin,
                 representation=ObjectId(data["representation"])
             )

openpype/hosts/photoshop/api/README.md

@@ -195,11 +195,12 @@ class ExtractImage(openpype.api.Extractor):
 #### Loader Plugin
 ```python
 from avalon import api, photoshop
+from openpype.pipeline import load, get_representation_path
 
 stub = photoshop.stub()
 
 
-class ImageLoader(api.Loader):
+class ImageLoader(load.LoaderPlugin):
     """Load images
 
     Stores the imported asset in a container named after the asset.
@@ -227,7 +228,7 @@ class ImageLoader(api.Loader):
 
         with photoshop.maintained_selection():
             stub.replace_smart_object(
-                layer, api.get_representation_path(representation)
+                layer, get_representation_path(representation)
             )
 
         stub.imprint(
@@ -245,7 +246,7 @@ https://community.adobe.com/t5/download-install/adobe-extension-debuger-problem/
 Add --enable-blink-features=ShadowDOMV0,CustomElementsV0 when starting Chrome
 then localhost:8078 (port set in `photoshop\extension\.debug`)
 
-Or use Visual Studio Code https://medium.com/adobetech/extendscript-debugger-for-visual-studio-code-public-release-a2ff6161fa01 
+Or use Visual Studio Code https://medium.com/adobetech/extendscript-debugger-for-visual-studio-code-public-release-a2ff6161fa01
 
 Or install CEF client from https://github.com/Adobe-CEP/CEP-Resources/tree/master/CEP_9.x
 ## Resources

openpype/hosts/photoshop/api/launch_logic.py

@@ -14,7 +14,7 @@ from openpype.api import Logger
 from openpype.tools.utils import host_tools
 
 from avalon import api
-from avalon.tools.webserver.app import WebServerTool
+from openpype.tools.adobe_webserver.app import WebServerTool
 
 from .ws_stub import PhotoshopServerStub
 

openpype/hosts/photoshop/api/pipeline.py

@@ -6,7 +6,12 @@ import avalon.api
 from avalon import pipeline, io
 
 from openpype.api import Logger
-from openpype.pipeline import LegacyCreator
+from openpype.lib import register_event_callback
+from openpype.pipeline import (
+    LegacyCreator,
+    register_loader_plugin_path,
+    deregister_loader_plugin_path,
+)
 import openpype.hosts.photoshop
 
 from . import lib
@@ -67,7 +72,7 @@ def install():
     pyblish.api.register_host("photoshop")
 
     pyblish.api.register_plugin_path(PUBLISH_PATH)
-    avalon.api.register_plugin_path(avalon.api.Loader, LOAD_PATH)
+    register_loader_plugin_path(LOAD_PATH)
     avalon.api.register_plugin_path(LegacyCreator, CREATE_PATH)
     log.info(PUBLISH_PATH)
 
@@ -75,12 +80,12 @@ def install():
         "instanceToggled", on_pyblish_instance_toggled
     )
 
-    avalon.api.on("application.launched", on_application_launch)
+    register_event_callback("application.launched", on_application_launch)
 
 
 def uninstall():
     pyblish.api.deregister_plugin_path(PUBLISH_PATH)
-    avalon.api.deregister_plugin_path(avalon.api.Loader, LOAD_PATH)
+    deregister_loader_plugin_path(LOAD_PATH)
     avalon.api.deregister_plugin_path(LegacyCreator, CREATE_PATH)