Add initial role for Dendrite as alternative Matrix server

roles/matrix-dendrite/tasks/update_user_password.yml

@@ -0,0 +1,41 @@
+---
+- name: Fail if playbook called incorrectly
+  fail:
+    msg: "The `username` variable needs to be provided to this playbook, via --extra-vars"
+  when: "username is not defined or username == '<your-username>'"
+
+- name: Fail if playbook called incorrectly
+  fail:
+    msg: "The `password` variable needs to be provided to this playbook, via --extra-vars"
+  when: "password is not defined or password == '<your-password>'"
+
+- name: Fail if not using matrix-postgres container
+  fail:
+    msg: "This command is working only when matrix-postgres container is being used"
+  when: "not matrix_postgres_enabled|bool"
+
+- name: Ensure matrix-dendrite is started
+  service:
+    name: matrix-dendrite
+    state: started
+    daemon_reload: yes
+  register: start_result
+
+- name: Ensure matrix-postgres is started
+  service:
+    name: matrix-postgres
+    state: started
+    daemon_reload: yes
+  register: postgres_start_result
+
+- name: Wait a while, so that Matrix Dendrite can manage to start
+  pause:
+    seconds: 7
+  when: "start_result.changed or postgres_start_result.changed"
+
+- name: Generate password hash
+  shell: "{{ matrix_host_command_docker }} exec matrix-dendrite /usr/local/bin/hash_password -c /data/homeserver.yaml -p {{ password|quote }}"
+  register: password_hash
+
+- name: Update user password hash
+  command: "{{ matrix_local_bin_path }}/matrix-postgres-update-user-password-hash {{ username|quote }} {{ password_hash.stdout|quote }}"