WIP Backlog/framework loader

[mlagergren]

WIP do not merge

Resolves :

• FT-c2343111-f86c-4036-92a5-0bb4046f77b7

• I have added automatic tests where applicable.
• The PR contains a description of what has been changed.
• The description contains manual test instructions.
• The PR contains update to the release notes.
• The PR contains update to the documentation.

This PR has been tested on :

• Windows.
• MacOs.
• Linux.

Overview

Purpose: Ftrack framework loader to be able to load components directly from the ftrack interface to the DCC.

Scope:

• constants
• framework-core/client and event_manager
• framework-common-extensions

Implementation Details

Approach: Based on having one single session and one single event manager that allows users to decide wether they want to run a specifc event in remote or in local mode. That provide us the ability for the client to subscribe to ftrack default remote events like action_discover and action_launch.

• client has now a new method (subscribe_action_tool) to subscribe to the action events for a specific tool
• This will create an action in the ftrack server that is clickable by the user when querying actions from a component, once clicked, this action will rise the loader dialog (if provided) and with that execute the loader tool-config.

Reasoning:

• Is the client that is registering the tools, so I think is ok to have the client subscribing to those ftrack action events and not a new “separated module” to do that, keeping it in the client seems easier to me to understand.

Changes:
Trade-offs:

Testing

Tests Added:

Manual Testing: Its very hard to manually test this PR alone. I have created the following branch to test it on maya with all the needed dependencies. experimental/test-loader
Don't worry about testing this, we need to first decide if the implementation is the way we want it to be. Then we will test this in the DCC specifc PRs.

Testing Environment:

Notes for Reviewers

Focus Areas:

• Client; subscribe_action_tool
• EventManager; new subscription events added

Dependencies: Highly dependant on:

• [standalone_run_in_main_thread] (feat: Backlog/standalone run in main thread #550)
• [event manager allow remote and local events] (feat: Backlog/event manager allow remote and local events #559)

Known Issues:

[mlagergren]

Consider removing the exlamation mark (!) and just use a dot: "No entities selected."
Git gives a bit more of a formal tone in the error messages.

[lluisCM]

Yes, sorry I didn't saw it when reviewing the code. Changed now.