[core] Plugins: Introduction of NodePluginManager #2589
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The NodePluginManager provides a way for registering and managing node plugins within Meshroom. This also provides a way for other components to interact with the plugins to understand whether a plugin is available or not.
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The Plugin Manager UI lets users see the available loaded Node Plugins. Each of the plugins have a detailed descriptive view which shows up when the label of the plugin name is clicked in the UI Node Plugin Manager allows browsing the Python Packages consisting the Node Plugins to load them in the current instance of Meshroom.
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TCSR-1193 | Part 1 - Introduction of a Plugin Management System
Node Plugin Manager
The NodePluginManager provides a way for registering and managing node plugins within Meshroom.
This also provides a way for other components to interact with the plugins to understand whether a plugin is available or not.
The Node Plugin Manager serves as an initial setup by removing a standard python dictionary "nodesDesc" and using a Singleton class dealing with Plugins.
The Registered Node Plugin is of the type NodeDescriptor.
The NodeDescriptor would later evolve into a Class holding the Module and its Modification times.
The Errors should also be stored in the NodeDescriptor along with its Version.
The changes here also replace the usage of standard conditions of dictionary to validate whether a plugin exists with the lingo of now checking "registered".
What's Next
The Next steps would be to update the plugin registering mechanism to also include the plugins which have an error on them.
Currently the plugins with issues/errors are discarded and not registered.
With the changes proposed here, the Error Nodes should also be allowed to be created in the NodeGraph, but will be of the form of CompatibilityNode, allowing the developer/user to visualise the Errors on the Node.
Tests