matrix-docker-ansible-deploy/roles/matrix-postgres/tasks/import_generic_sqlite_db.yml

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---
# Pre-checks
- name: Fail if Postgres not enabled
ansible.builtin.fail:
msg: "Postgres via the matrix-postgres role is not enabled (`matrix_postgres_enabled`). Cannot import."
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when: "not matrix_postgres_enabled | bool"
- name: Fail if playbook called incorrectly
ansible.builtin.fail:
msg: "The `sqlite_database_path` variable needs to be provided to this playbook, via --extra-vars"
when: "sqlite_database_path is not defined or sqlite_database_path.startswith('<')"
- name: Check if the provided SQLite database file exists
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ansible.builtin.stat:
path: "{{ sqlite_database_path }}"
register: sqlite_database_path_stat_result
- name: Fail if provided SQLite database file doesn't exist
ansible.builtin.fail:
msg: "File cannot be found on the server at {{ sqlite_database_path }}"
when: "not sqlite_database_path_stat_result.stat.exists"
# We either expect `postgres_db_connection_string` specifying a full Postgres database connection string,
# or `postgres_connection_string_variable_name`, specifying a name of a variable, which contains a valid connection string.
- block:
- name: Fail if postgres_connection_string_variable_name points to an undefined variable
ansible.builtin.fail: msg="postgres_connection_string_variable_name is defined, but there is no variable with the name `{{ postgres_connection_string_variable_name }}`"
when: "postgres_connection_string_variable_name not in vars"
- name: Get Postgres connection string from variable
ansible.builtin.set_fact:
postgres_db_connection_string: "{{ lookup('vars', postgres_connection_string_variable_name) }}"
when: 'postgres_connection_string_variable_name is defined'
- name: Fail if playbook called incorrectly
ansible.builtin.fail:
msg: >-
Either a `postgres_db_connection_string` variable or a `postgres_connection_string_variable_name` needs to be provided to this playbook, via `--extra-vars`.
Example: `--extra-vars="postgres_db_connection_string=postgresql://username:password@localhost:<port>/database_name"` or `--extra-vars="postgres_connection_string_variable_name=matrix_appservice_discord_database_connString"`
when: "postgres_db_connection_string is not defined or not postgres_db_connection_string.startswith('postgresql://')"
# Defaults
- name: Set postgres_start_wait_time, if not provided
ansible.builtin.set_fact:
postgres_start_wait_time: 15
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when: "postgres_start_wait_time | default('') == ''"
# Actual import work
- name: Ensure matrix-postgres is started
ansible.builtin.service:
name: matrix-postgres
state: started
daemon_reload: true
register: matrix_postgres_service_start_result
- name: Wait a bit, so that Postgres can start
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ansible.builtin.wait_for:
timeout: "{{ postgres_start_wait_time }}"
delegate_to: 127.0.0.1
become: false
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when: "matrix_postgres_service_start_result.changed | bool"
- name: Import SQLite database from {{ sqlite_database_path }} into Postgres
ansible.builtin.command:
cmd: >-
{{ matrix_host_command_docker }} run
--rm
--user={{ matrix_user_uid }}:{{ matrix_user_gid }}
--cap-drop=ALL
--network={{ matrix_docker_network }}
--mount type=bind,src={{ sqlite_database_path }},dst=/in.db,ro
--entrypoint=/bin/sh
{{ matrix_postgres_pgloader_docker_image }}
-c
'pgloader /in.db {{ postgres_db_connection_string }}'
- name: Archive SQLite database ({{ sqlite_database_path }} -> {{ sqlite_database_path }}.backup)
ansible.builtin.command:
cmd: "mv {{ sqlite_database_path }} {{ sqlite_database_path }}.backup"
- name: Inject result
ansible.builtin.set_fact:
matrix_playbook_runtime_results: |
{{
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matrix_playbook_runtime_results | default([])
+
[
"NOTE: Your SQLite database file has been imported into Postgres. The original file has been moved from `{{ sqlite_database_path }}` to `{{ sqlite_database_path }}.backup`. When you've confirmed that the import went well and everything works, you should be able to safely delete this file."
]
}}