drone-matrixchat-notify/README.md

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# drone-matrixchat-notify
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A [drone.io] [plugin] to send notifications to Matrix chat rooms from CI
pipeline steps. Supports *Jinja* message templates and *Markdown* rendering.
Example pipeline configuration:
```yaml
kind: pipeline
type: docker
name: default
steps:
- name: build
image: alpine
commands:
- ./build
- name: notify
image: spotlightkid/drone-matrixchat-notify
settings:
homeserver: 'https://matrix.org'
roomid: '!xxxxxx@matrix.org'
userid: '@drone-bot@matrix.org'
password:
from_secret: drone-bot-pw
markdown: 'yes'
template: |
`${DRONE_REPO}` build #${DRONE_BUILD_NUMBER} status: **${DRONE_BUILD_STATUS}**
${DRONE_PULL_REQUEST_TITLE}](${DRONE_COMMIT_LINK})
```
## Configuration settings
### Required
* `roomid` *(required)*
ID of matrix chat room to send messages to (ID, not alias).
* `userid` *(required)*
Matrix user ID on homeserver to send message as (ID, not username).
* `password` *(required)*
Password to use for authenticating the user set with `userid`. Either a
password or an access token is required.
* `accesstoken` *(required)*
Access token to use for authentication instead of `password`. Either an
access token or a password is required.
### Optional
* `allowed_attrs` *(default:* [`DEFAULT_ALLOWED_ATTRS`]*)*
List or string with comma-separated list of HTML attribute names or
dict mapping tag names to lists of attributes names.
See the bleach documentation on [allowed attributes] for more information.
* `allowed_tags` *(default:* [`DEFAULT_ALLOWED_TAGS`]*)*
List or set or string with comma-separated list of HTML tag names. HTML
tags not included will be stripped from the HTML output generated by
rendering a Markdown message template.
Note that the default list does not include any tags, which allow to load
external resources when the generated HTML is displayed, notably `img`
is not included.
* `deviceid`
Device ID to send with access token.
* `devicename`
Device name to send with access token.
* `homeserver` *(default:* `https://matrix.org`*)*
The Matrix homeserver URL.
* `jinja`
If set to `yes`, `y`, `true`, `t`, `on` or `1`, the message template is
rendered with the [Jinja] templating engine (instead of performing simple
placeholder substitution). The template context is controlled by the
`pass_environment` setting, same as with non-Jinja templates, but
placeholders use a different syntax (example: `{{DRONE_REPO}}`), so the
`template` setting should be changed to be a valid Jinja template string
when this is enabled.
Using this feature requires the `jinja2` Python module to be available
(it is installed by default in the plugin's docker image).
* `markdown`
If set to `yes`, `y`, `true`, `t`, `on` or `1`, the message resulting from
template substtution is considered to be in Markdown format and will be
rendered to HTML and sent as a formatted message with the format set to
`org.matrix.custom.html`.
Using this feature requires the `markdown` and `bleach` Python modules to
be available (they are installed by default in the plugin's docker image).
* `markdown_extensions` *(default:* `admonition, extra, sane_lists, smarty`)
Comma-separated list of enabled Markdown extensions. See this
[list of extensions] for valid extension names. Including an invalid
extension name in this list will disable Markdown rendering.
* `pass_environment` *(default:* `DRONE_*`*)*
Comma-separated white-list of environment variable names or name patterns.
Patterns are shell-glob style patterns and case-sensitive.
Only environment variables matching any of the given names or patterns will
be available as valid placeholders in the message template.
* `template` *(default:* `${DRONE_BUILD_STATUS}`*)*
The message template. Valid placeholders (example: `${DRONE_REPO}`) will be
substituted with the values of the matching environment variables (subject
to filtering according to the `pass_environment` setting).
See this [reference] for environment variables available in drone.io CI
pipelines.
[`DEFAULT_ALLOWED_ATTRS`]: https://github.com/SpotlightKid/drone-matrixchat-notify/blob/master/matrixchat-notify.py#L28
[`DEFAULT_ALLOWED_TAGS`]: https://github.com/SpotlightKid/drone-matrixchat-notify/blob/master/matrixchat-notify.py#L35
[allowed attributes]: https://bleach.readthedocs.io/en/latest/clean.html#allowed-attributes-attributes
[drone.io]: https://drone.io/
[jinja]: https://jinja.palletsprojects.com/
[list of extensions]: https://python-markdown.github.io/extensions/
[plugin]: https://docs.drone.io/plugins/overview/
[reference]: https://docs.drone.io/pipeline/environment/reference/