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Enable automatic (SQLite -> Postgres) migration for matrix-reminder-bot

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This commit is contained in:
Slavi Pantaleev 2020-12-14 16:03:32 +02:00
parent dc7850e83c
commit ac37091d01
1 changed files with 29 additions and 17 deletions
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46
roles/matrix-bot-matrix-reminder-bot/tasks/setup_install.yml
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@ -1,23 +1,29 @@
---
- block:
- name: Check if an SQLite database already exists
stat:
path: "{{ matrix_bot_matrix_reminder_bot_sqlite_database_path_local }}"
register: matrix_bot_matrix_reminder_bot_sqlite_database_path_local_stat_result
- set_fact:
matrix_bot_matrix_reminder_bot_requires_restart: false
- name: Fail if an SQLite database already exists when using Postgres
fail:
msg: >-
matrix_bot_matrix_reminder_bot_database_engine has been set to `postgres` (which is our new default now).
However, we've discovered an existing SQLite database in {{ matrix_bot_matrix_reminder_bot_sqlite_database_path_local }}.
It appears that you've been using this bridge with the SQLite engine until now.
To continue using SQLite, opt into it explicitly: add `matrix_bot_matrix_reminder_bot_database_engine: sqlite` to your vars.yml file and re-run this same command.
Alternatively, to migrate your existing SQLite database to Postgres:
1. Stop all services (`ansible-playbook -i inventory/hosts setup.yml --tags=stop`)
2. Import the SQLite database into Postgres (`ansible-playbook -v -i inventory/hosts setup.yml --tags=import-generic-sqlite-db --extra-vars='sqlite_database_path={{ matrix_bot_matrix_reminder_bot_sqlite_database_path_local }} postgres_connection_string_variable_name=matrix_bot_matrix_reminder_bot_database_connection_string'`)
3. Re-run the playbook (`ansible-playbook -i inventory/hosts setup.yml --tags=setup-all,start`)
when: "matrix_bot_matrix_reminder_bot_sqlite_database_path_local_stat_result.stat.exists"
- block:
- name: Check if an SQLite database already exists
stat:
path: "{{ matrix_bot_matrix_reminder_bot_sqlite_database_path_local }}"
register: matrix_bot_matrix_reminder_bot_sqlite_database_path_local_stat_result
- block:
- set_fact:
matrix_postgres_db_migration_request:
src: "{{ matrix_bot_matrix_reminder_bot_sqlite_database_path_local }}"
dst: "{{ matrix_bot_matrix_reminder_bot_database_connection_string }}"
caller: "{{ role_path|basename }}"
engine_variable_name: 'matrix_bot_matrix_reminder_bot_database_engine'
engine_old: 'sqlite'
systemd_services_to_stop: ['matrix-bot-matrix-reminder-bot.service']
- import_tasks: "roles/matrix-postgres/tasks/util/migrate_db_to_postgres.yml"
- set_fact:
matrix_bot_matrix_reminder_bot_requires_restart: true
when: "matrix_bot_matrix_reminder_bot_sqlite_database_path_local_stat_result.stat.exists|bool"
when: "matrix_bot_matrix_reminder_bot_database_engine == 'postgres'"
- name: Ensure matrix-reminder-bot paths exist
@ -59,3 +65,9 @@
service:
daemon_reload: yes
when: "matrix_bot_matrix_reminder_bot_systemd_service_result.changed|bool"
- name: Ensure matrix-bot-matrix-reminder-bot.service restarted, if necessary
service:
name: "matrix-bot-matrix-reminder-bot.service"
state: restarted
when: "matrix_bot_matrix_reminder_bot_requires_restart|bool"