Rasa Python-SDK
Python SDK for the development of custom actions for Rasa.
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Installation
To install the SDK run
pip install rasa-sdk
Compatibility
rasa-sdk package:
| SDK version | compatible Rasa version |
|---|---|
1.0.x |
>=1.0.x |
old rasa_core_sdk package:
| SDK version | compatible Rasa Core version |
|---|---|
0.12.x |
>=0.12.x |
0.11.x |
0.11.x |
| not compatible | <=0.10.x |
Usage
Detailed instructions can be found in the Rasa Documentation about Custom Actions.
Docker
Usage
In order to start an action server using implemented custom actions,
you can use the available Docker image rasa/rasa-sdk.
Before starting the action server ensure that the folder containing
your actions is handled as Python module and therefore has to contain
a file called __init__.py
Then start the action server using:
docker run -p 5055:5055 --mount type=bind,source=<ABSOLUTE_PATH_TO_YOUR_ACTIONS>,target=/app/actions \
rasa/rasa-sdk:<version>
The action server is then available at http://localhost:5055/webhook.
Custom Dependencies
To add custom dependencies you enhance the given Docker image, e.g.:
# Extend the official Rasa SDK image
FROM rasa/rasa-sdk:<version>
# Change back to root user to install dependencies
USER root
# To install system dependencies
RUN apt-get update -qq && \
apt-get install -y <NAME_OF_REQUIRED_PACKAGE> && \
apt-get clean && \
rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
# To install packages from PyPI
RUN pip install --no-cache-dir <A_REQUIRED_PACKAGE_ON_PYPI>
# Switch back to non-root to run code
USER 1001
Building from source
Rasa SDK uses Poetry for packaging and dependency management. If you want to build it from source, you have to install Poetry first. This is how it can be done:
curl -sSL https://install.python-poetry.org | python3 -
There are several other ways to install Poetry. Please, follow the official guide to see all possible options.
To install dependencies and rasa-sdk itself in editable mode execute
make install
Code Style
To ensure a standardized code style we use the formatter ruff. If your code is not formatted properly, GitHub CI will fail to build.
If you want to automatically format your code on every commit, you can use pre-commit.
Just install it via pip install pre-commit and execute pre-commit install.
To check and reformat files execute
make lint
Steps to release a new version
Releasing a new version is quite simple, as the packages are build and distributed by GitHub Actions.
Release steps:
- Switch to the branch you want to cut the release from (
mainin case of a major / minor, the current release branch for patch releases). - If this is a minor / major release: Make sure all fixes from currently supported minor versions have been merged from their respective release branches (e.g. 3.3.x) back into main.
- Run
make release - Create a PR against main or the release branch (e.g.
1.2.x) - If this is a minor release, a new release branch should be created
pointing to the same commit as the tag to allow for future patch releases,
e.g.
git checkout -b 1.2.x git push origin 1.2.x
License
Licensed under the Apache License, Version 2.0. Copyright 2021 Rasa Technologies GmbH. Copy of the license.
A list of the Licenses of the dependencies of the project can be found at the bottom of the Libraries Summary.
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