kuyugama/RelativeAddonsSystem

The python relative addons system library

Relative Addons System

This is a special system that allows you to manage your addons in runtime.

The library has caching that allows it to work faster

Definitions

Addon - directory that contains addon.json and __init__.py
addon.json is a json file that describes addon and must contain name, author, description and version(strings)

Usage examples

from pathlib import Path

from RelativeAddonsSystem import RelativeAddonsSystem, Addon, AddonMeta

# Init addons system
system = RelativeAddonsSystem(Path(__file__).parent / "addons", auto_install_requirements=True)

# return list of Addon objects
addons: list[Addon] = system.get_all_addons()

if len(addons) < 1:
    print("No addons found")
else:
    for addon in addons:
        # loaded meta(AddonMeta) from ADDON_DIR/addon.json
        meta: AddonMeta = addon.meta
        
        print("Working with", meta.name, "at", addon.path.absolute())
        
        # Check dependencies
        if not addon.check_requirements(alert=False):
            print("Installing addon dependencies")
            # Install dependencies
            installed: list[str] = addon.install_requirements()
            print("Successfully installed addon dependencies (", ", ".join(installed), ")")
        else:
            print("Addon dependencies already satisfied")
        
        # Get addon module
        module = addon.module # ADDON_DIR / __init__.py module
        ...

In this example, we have listed all addons and installed their dependencies if they were not already installed.

We can also disable or enable addons:

from pathlib import Path

from RelativeAddonsSystem import RelativeAddonsSystem, Addon

# Init addons system
system = RelativeAddonsSystem(Path(__file__).parent / "addons", auto_install_requirements=True)

addons: list[Addon] = system.get_enabled_addons() # get all enabled addons

if len(addons) > 0:
    addon: Addon = addons[0] # first addon from list
    addon.disable() # disable addon
    
    ...
    
    addon.enable() # enable addon

Or import and re-import the module (useful when we have updated your addon):

from pathlib import Path

from RelativeAddonsSystem import RelativeAddonsSystem, Addon

# Init addons system
system = RelativeAddonsSystem(Path(__file__).parent / "addons", auto_install_requirements=True)

addons: list[Addon] = system.get_enabled_addons() # get all enabled addons

if len(addons) > 0:
    addon: Addon = addons[0] # first addon from list
    
    module = addon.module
    
    ... # Work with module

    # Reimport module
    module = addon.reload_module()
    
    ... # Work with module

We can also change the metadata in your code:

from pathlib import Path

from RelativeAddonsSystem import RelativeAddonsSystem, Addon, AddonMeta

# Init addons system
system = RelativeAddonsSystem(Path(__file__).parent / "addons", auto_install_requirements=True)

addons: list[Addon] = system.get_enabled_addons() # get all enabled addons

if len(addons) > 0:
    addon: Addon = addons[0] # first addon from list
    
    meta: AddonMeta = addon.meta

    meta.set("version", "1.2")

    meta.save()

Or set specific data into the addon's storage:

from pathlib import Path

from RelativeAddonsSystem import RelativeAddonsSystem, Addon
from RelativeAddonsSystem.utils import Storage

# Init addons system
system = RelativeAddonsSystem(Path(__file__).parent / "addons", auto_install_requirements=True)

addons: list[Addon] = system.get_enabled_addons() # get all enabled addons

if len(addons) > 0:
    addon: Addon = addons[0] # first addon from list
    
    # Loaded the ADDON_DIR/ADDON_NAME-storage.json file
    storage: Storage = addon.get_storage()

    storage.set("api_version", "1.2")

    storage.save()