Plugin System

[mh0g]

Description

This feature adds a plugin system to meshroom.
It also allows to install and run new nodes using containerization tools, such as conda and docker.

Features list

v1

• Install button in the ui
• Install from local folder
• Install from git
• Camelify code
• Add support for pipelines
• New 'build status' for nodes that are building their environment
• .json to customize plugin install
• Support multiple env per plugin
• Documentation to create plugins
• Node uninstallation
• Catalog logic
• PipNode to install pip packages in meshroom's python
• PythonVirtualEnvNode taking requirements.txt

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v2

• Changing the logic from env class to env attribute
• Modify process() in node to run normally if no or pip env, or conda, venv, docker, rez via command line meshroom_compute, if specified
• Added badge and warning to build
• Access to meshroom within envs

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v3

• support for rez packages
• autorefresh

Implementation remarks

The logic is in meshroom/core/plugin.py .
It defines a new node classes to run python code in environments/containers using meshroom_compute.
Added bandit file to not test the shell call errors in codefactor.
Uses the CI en var to skip the tests on CI.

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Future needed work: ui part to list/uninstall catalog, multiples envs per node, button to delete env

[Just-Kiel]

Could it be great to have "Delete Environment" button ? Like the "Delete Data"

[mh0g]

Could it be great to have "Delete Environment" button ? Like the "Delete Data"

added in todos for next version. Could be added to the "manage installed plugins" page, alongside the "un-install plugin" button

[almarouk]

Would it be possible to add support for non-default location for conda environments? i.e. using "--prefix PATH" instead of "--name NAME".
In that case, checks for the existence of the environment need to be adapted correspondingly, notably in the following:

Meshroom/meshroom/core/plugin.py

Line 90 in 24c4585

cmd = condaBin+" list --name "+envName

would become: cmd = condaBin+" list --prefix "+envName, or alternatively by checking the result of conda env list.