add auto join option to dendrite config (#2255)

* add auto join option to dendrite config

* added   auto_join_rooms: variable

* added "configuring dendrite" entry

* created dendite configuration documentation

* fixed config path

* Update docs/configuring-playbook-dendrite.md

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

* Update docs/configuring-playbook-dendrite.md

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

* Update docs/configuring-playbook-dendrite.md

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

* Update docs/configuring-playbook-dendrite.md

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

* Update docs/configuring-playbook-dendrite.md

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

* Update roles/custom/matrix-dendrite/defaults/main.yml

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

* correction

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

docs/configuring-playbook-dendrite.md

@@ -0,0 +1,32 @@
+# Configuring Dendrite (optional)
+
+By default, this playbook configures the [Synapse](https://github.com/matrix-org/synapse) Matrix server, but you can also use [Dendrite](https://github.com/matrix-org/dendrite).
+
+**NOTES**:
+
+- **You can't switch an existing Matrix server's implementation** (e.g. Synapse -> Dendrite). Proceed below only if you're OK with losing data or you're dealing with a server on a new domain name, which hasn't participated in the Matrix federation yet.
+
+- **homeserver implementations other than Synapse may not be fully functional**. The playbook may also not assist you in an optimal way (like it does with Synapse). Make yourself familiar with the downsides before proceeding
+
+The playbook provided settings for Dendrite are defined in [`roles/custom/matrix-dendrite/defaults/main.yml`](../roles/custom/matrix-dendrite/defaults/main.yml) and they ultimately end up in the generated `/matrix/dendrite/config/dendrite.yaml` file (on the server). This file is generated from the [`roles/custom/matrix-dendrite/templates/dendrite/dendrite.yaml.j2`](../roles/custom/matrix-dendrite/templates/dendrite/dendrite.yaml.j2) template.
+
+**If there's an existing variable** which controls a setting you wish to change, you can simply define that variable in your configuration file (`inventory/host_vars/matrix.<your-domain>/vars.yml`) and [re-run the playbook](installing.md) to apply the changes.
+
+Alternatively, **if there is no pre-defined variable** for a Dendrite setting you wish to change:
+
+- you can either **request a variable to be created** (or you can submit such a contribution yourself). Keep in mind that it's **probably not a good idea** to create variables for each one of Dendrite's various settings that rarely get used.
+
+- or, you can **extend and override the default configuration** ([`dendrite.yaml.j2`](../roles/custom/matrix-dendrite/templates/dendrite/dendrite.yaml.j2)) by making use of the `matrix_dendrite_configuration_extension_yaml` variable. You can find information about this in [`roles/custom/matrix-dendrite/defaults/main.yml`](../roles/custom/matrix-dendrite/defaults/main.yml).
+
+- or, if extending the configuration is still not powerful enough for your needs, you can **override the configuration completely** using `matrix_dendrite_configuration` (or `matrix_dendrite_configuration_yaml`). You can find information about this in [`roles/custom/matrix-dendrite/defaults/main.yml`](../roles/custom/matrix-dendrite/defaults/main.yml).
+
+
+
+## Installation
+
+To use Dendrite, you **generally** need the following additional `vars.yml` configuration:
+
+```yaml
+matrix_homeserver_implementation: dendrite
+```
+

docs/configuring-playbook.md

@@ -47,6 +47,8 @@ When you're done with all the configuration you'd like to do, continue with [Ins
 
   - [Configuring Conduit](configuring-playbook-conduit.md), if you've switched to the [Conduit](https://conduit.rs) homeserver implementation (optional)
 
+  - [Configuring Dendrite](configuring-playbook-dendrite.md), if you've switched to the [Dendrite](https://matrix-org.github.io/dendrite) homeserver implementation (optional)
+
 - [Configuring Element](configuring-playbook-client-element.md) (optional)
 
 - [Storing Matrix media files on Amazon S3](configuring-playbook-s3.md) (optional)

roles/custom/matrix-dendrite/defaults/main.yml

@@ -194,3 +194,5 @@ matrix_dendrite_configuration_extension: "{{ matrix_dendrite_configuration_exten
 # Holds the final Dendrite configuration (a combination of the default and its extension).
 # You most likely don't need to touch this variable. Instead, see `matrix_dendrite_configuration_yaml`.
 matrix_dendrite_configuration: "{{ matrix_dendrite_configuration_yaml | from_yaml | combine(matrix_dendrite_configuration_extension, recursive=True) }}"
+
+matrix_dendrite_userapi_auto_join_rooms: []

roles/custom/matrix-dendrite/templates/dendrite/dendrite.yaml.j2

@@ -382,6 +382,7 @@ user_api:
   # is considered to be valid in milliseconds.
   # The default lifetime is 3600000ms (60 minutes).
   # openid_token_lifetime_ms: 3600000
+  auto_join_rooms: {{ matrix_dendrite_userapi_auto_join_rooms | to_json }}
 
 # Not in dendrite-config.yaml, but is in build/docker/config/dendrite.yaml
 # Configuration for the Push Server API.
@@ -414,3 +415,4 @@ tracing:
 # Logging configuration, in addition to the standard logging that is sent to
 # stdout by Dendrite.
 logging: []
+