Add (SQLite + Postgres) support and automatic migration to matrix-dimension

group_vars/matrix_servers

@@ -716,7 +716,7 @@ matrix_dimension_systemd_required_services_list: |
 
 # Postgres is the default, except if not using `matrix_postgres` (internal postgres)
 matrix_dimension_database_engine: "{{ 'postgres' if matrix_postgres_enabled else 'sqlite' }}"
-matrix_dimension_database_password: "{{ matrix_synapse_macaroon_secret_key | password_hash('sha512', 'as.dimension.db') | to_uuid }}"
+matrix_dimension_database_password: "{{ matrix_synapse_macaroon_secret_key | password_hash('sha512', 'dimension.db') | to_uuid }}"
 
 ######################################################################
 #
@@ -1092,13 +1092,12 @@ matrix_postgres_additional_databases: |
     }] if (matrix_mx_puppet_steam_enabled
            and matrix_mx_puppet_steam_database_engine == 'postgres'
            and matrix_mx_puppet_steam_database_hostname == 'matrix-postgres') else [])
-     + ([{
+     +
+    ([{
       'name': matrix_dimension_database_db_name,
       'username': matrix_dimension_database_username,
       'password': matrix_dimension_database_password,
-    }] if (matrix_dimension_enabled
+    }] if (matrix_dimension_enabled and matrix_dimension_database_engine == 'postgres' and matrix_dimension_database_hostname == 'matrix-postgres') else [])
-           and matrix_dimension_database_engine == 'postgres'
-           and matrix_dimension_database_hostname == 'matrix-postgres') else [])
    }}
 
 ######################################################################

roles/matrix-dimension/defaults/main.yml

@@ -40,6 +40,28 @@ matrix_dimension_integrations_jitsi_widget_url: "https://{{ matrix_server_fqn_di
 
 matrix_dimension_homeserver_federationUrl: "http://matrix-synapse:8048"
 
+
+# Database-related configuration fields.
+#
+# To use SQLite, stick to these defaults.
+#
+# To use Postgres:
+# - change the engine (`matrix_dimension_database_engine: 'postgres'`)
+# - adjust your database credentials via the `matrix_dimension_postgres_*` variables
+matrix_dimension_database_engine: 'sqlite'
+
+matrix_dimension_sqlite_database_path_local: "{{ matrix_dimension_base_path }}/dimension.db"
+matrix_dimension_sqlite_database_path_in_container: "dimension.db"
+
+matrix_dimension_database_username: 'matrix_dimension'
+matrix_dimension_database_password: 'some-password'
+matrix_dimension_database_hostname: 'matrix-postgres'
+matrix_dimension_database_port: 5432
+matrix_dimension_database_db_name: 'matrix_dimension'
+
+matrix_dimension_database_connection_string: 'postgres://{{ matrix_dimension_database_username }}:{{ matrix_dimension_database_password }}@{{ matrix_dimension_database_hostname }}:{{ matrix_dimension_database_port }}/{{ matrix_dimension_database_db_name }}'
+
+
 # Default Dimension configuration template which covers the generic use case.
 # You can customize it by controlling the various variables inside it.
 #

roles/matrix-dimension/tasks/setup_install.yml

@@ -1,5 +1,32 @@
 ---
 
+- set_fact:
+    matrix_dimension_requires_restart: false
+
+- block:
+    - name: Check if an SQLite database already exists
+      stat:
+        path: "{{ matrix_dimension_sqlite_database_path_local }}"
+      register: matrix_dimension_sqlite_database_path_local_stat_result
+
+    - block:
+        - set_fact:
+            matrix_postgres_db_migration_request:
+              src: "{{ matrix_dimension_sqlite_database_path_local }}"
+              dst: "{{ matrix_dimension_database_connection_string }}"
+              caller: "{{ role_path|basename }}"
+              engine_variable_name: 'matrix_dimension_database_engine'
+              engine_old: 'sqlite'
+              systemd_services_to_stop: ['matrix-dimension.service']
+              pgloader_options: ['--with "quote identifiers"']
+
+        - import_tasks: "roles/matrix-postgres/tasks/util/migrate_db_to_postgres.yml"
+
+        - set_fact:
+            matrix_dimension_requires_restart: true
+      when: "matrix_dimension_sqlite_database_path_local_stat_result.stat.exists|bool"
+  when: "matrix_dimension_database_engine == 'postgres'"
+
 - name: Ensure Dimension base path exists
   file:
     path: "{{ matrix_dimension_base_path }}"
@@ -34,3 +61,9 @@
   service:
     daemon_reload: yes
   when: "matrix_dimension_systemd_service_result.changed|bool"
+
+- name: Ensure matrix-dimension.service restarted, if necessary
+  service:
+    name: "matrix-dimension.service"
+    state: restarted
+  when: "matrix_dimension_requires_restart|bool"

roles/matrix-dimension/templates/config.yaml.j2

@@ -44,7 +44,11 @@ widgetBlacklist:
 
 # Where the database for Dimension is
 database:
-  uri: "postgres://matrix_dimension:{{ matrix_additional_databases | selectattr('name', 'equalto', 'matrix_dimension') | map(attribute='pass') | first }}@{{ matrix_postgres_connection_hostname }}/matrix_dimension"
+{% if matrix_dimension_database_engine == 'sqlite' %}
+  file: {{ matrix_dimension_sqlite_database_path_in_container|to_json }}
+{% elif matrix_dimension_database_engine == 'postgres' %}
+  uri: {{ matrix_dimension_database_connection_string|to_json }}
+{% endif %}
 
 # Display settings that apply to self-hosted go-neb instances
 goneb:

roles/matrix-dimension/templates/systemd/matrix-dimension.service.j2

@@ -16,7 +16,9 @@ ExecStartPre=-{{ matrix_host_command_docker }} kill matrix-dimension
 ExecStartPre=-{{ matrix_host_command_docker }} rm matrix-dimension
 
 # Fixup database ownership if it got changed somehow (during a server migration, etc.)
-ExecStartPre=-{{ matrix_host_command_chown }} {{ matrix_dimension_user_uid }}:{{ matrix_dimension_user_gid }} {{ matrix_dimension_base_path }}/dimension.db
+{% if matrix_dimension_database_engine == 'sqlite' %}
+ExecStartPre=-{{ matrix_host_command_chown }} {{ matrix_dimension_user_uid }}:{{ matrix_dimension_user_gid }} {{ matrix_dimension_sqlite_database_path_local }}
+{% endif %}
 
 ExecStart={{ matrix_host_command_docker }} run --rm --name matrix-dimension \
 			--log-driver=none \