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Aries Cloud Agent Python Plugins

This repository contains approved and tested plugins for Aries Cloud Agent Python (ACA-Py). This is to encourage collaboration and sharing of useful features not directly included in ACA-Py.

Developer Notes

The easiest way to develop and test ACA-Py plugins is to use the DevContainer configured in this repository.

  • Open devcontainer in VS Code
  • Python and all dependencies will be loaded
  • Poetry will be loaded and configured, dependencies will be installed
  • Docker and Docker Compose will be available

Repo Management Script

A script was developed to help with maintenance of the repo called repo_manager.py. To run it you need a current version of poetry and python available.

Run python repo_manager.py and you will be met with a number of options. Run the options as needed.

  • (1) Is used for starting or adding a new plugin. It will generate all the common scaffolding for a plugin which has the expected format.
  • (2) Is used for updating and changing common poetry dependencies and configurations. It takes the poetry sections in the pyproject.toml files from the plugin_globals directory and combines them with the local plugin poetry sections. For the dependencies the common will be overridden by the globals. The other config sections will be replaced by the global configs. Then the lock files will be removed and re-installed.
  • (3) Is used for updating the plugin versions in the plugin_globals directory. It will update the versions of the plugins in the plugin_globals directory to the latest version on the main branch of the plugin repo. It will also update the plugin_globals directory to the latest version on the main branch of the plugin repo.
  • (4) This option is used by the CI/CD release pipeline. It updates the release notes and the individual plugins with a new version of ACA-Py.
  • (5) This option is also used by the CI/CD release pipeline. It gets any plugins that have succeeded the tests after a new version of ACA-Py has been released if their changes were not reverted than the plugin has been updated to the new version of ACA-Py.
  • (6) This option will run a general update for all poetry lock files in all plugins.
  • (7) This option is used for upgrading a particular library for all plugins. It's useful for when you don't want to do a general upgrade for every library.

Lite plugins

Sometimes is desirable to have a plugin that doesn't need integration tests or extra scaffolding. However, we need a way to avoid these plugins running integration tests in the CI/CD pipeline. To do this, we can simply add the plugin name to the lite_plugins file, a line-separated list of plugin names.

Plugin Documentation

Plugin developers SHOULD describe what the plugin does, any limitations (ex only in multitenant mode), any known issues interacting with other plugins, etc. Full documentation including a plugin_config sample should be provided.

This documentation should be provided in your plugin root as a README.md file, with at least a Description and Configuration section.

Build and Run

Each plugin (that is not a Lite Plugin) MUST include a Dockerfile (such as Dockerfile) to run integration tests. This image is not intended for production as it copies the plugin source and loads its dependencies (including ACA-Py) along with a simplistic ACA-Py configuration file, (such as default.yml).

Run and Debug

In the devcontainer, we can run an ACA-Py instance with our plugin source loaded and set breakpoints for debug (see launch.json).

To run your ACA-Py code in debug mode, go to the Run and Debug view, select "Run/Debug Plugin" and click Start Debugging (F5). Using the default.yml for the plugin (such as default.yml), your agent swagger is available at http://localhost:3001/api/doc.

Testing

For the plugin to be accepted into this repo it must have adequate testing.

Unit Testing:

  • There should be adequate unit testing coverage. A coverage report is created when poetry run pytest . in ran from the devcontainer. A good mark to aim for is 90% but the quality of the tests on critical sections is more important than coverage percentage.
  • Mocking can be challenging. Study the existing plugins in this repo and ACA-Py in general for good examples of mocks and fixtures.
  • Put your unit tests in a tests folder in your plugin version path and name all files and test with the test_ prefix.

Integration Testing:

  • Plugins SHOULD have a suite of integration tests. The base suite will be created for your plugin after running the updater script. Plugins that don't have integrations must be flagged as being a Lite Plugin.
  • An Integration README (such as integration tests) SHOULD describe the set of integration tests. When you generate a new plugin, you should have everything you need to start integration testing and a sample test will be provided.

Deploy

For production use, plugins should be installed as libraries to an ACA-Py image.

This requires having a Dockerfile and a config file for your agent.

Example Dockerfile:

FROM ghcr.io/hyperledger/aries-cloudagent-python:py3.9-0.11.0

USER root

# install plugins as binaries
RUN pip install git+https://github.com/hyperledger/aries-acapy-plugins@main#subdirectory=basicmessage_storage
RUN pip install git+https://github.com/hyperledger/aries-acapy-plugins@main#subdirectory=connection_update

USER $user
COPY ./configs configs

CMD ["ACA-Py"]

Example config file (local single tenant):

label: plugins-agent

admin-insecure-mode: true
admin: [0.0.0.0, 9061]

inbound-transport:
   - [http, 0.0.0.0, 9060]
outbound-transport: http
endpoint: http://host.docker.internal:9060

genesis-url: http://test.bcovrin.vonx.io/genesis

emit-new-didcomm-prefix: true
wallet-type: askar
wallet-storage-type: default

auto-provision: true
debug-connections: true
auto-accept-invites: true
auto-accept-requests: true
auto-ping-connection: true
auto-respond-messages: true

log-level: info

plugin:
  - basicmessage_storage.v1_0
  - connection_update.v1_0

Now you can deploy a agent with as many plugins as you want as long as they are declared in your build config file and installed.

docker build -f <Dockerfile> --tag acapy_plugins .
docker run -it -p 9060:9060 -p 9061:9061 --rm acapy_plugins start --arg-file=<config-file> -->