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135 lines
6.5 KiB
135 lines
6.5 KiB
---
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- name: Fail if Postgres not enabled
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fail:
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msg: "Postgres via the matrix-postgres role is not enabled (`matrix_postgres_enabled`). Cannot migrate."
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when: "not matrix_postgres_enabled|bool"
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- name: Fail if util called incorrectly (missing matrix_postgres_db_migration_request)
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fail:
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msg: "The `matrix_postgres_db_migration_request` variable needs to be provided to this util."
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when: "matrix_postgres_db_migration_request is not defined"
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- name: Fail if util called incorrectly (invalid matrix_postgres_db_migration_request)
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fail:
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msg: "The `matrix_postgres_db_migration_request` variable needs to contain `{{ item }}`."
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with_items:
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- src
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- dst
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- caller
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- engine_variable_name
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- systemd_services_to_stop
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when: "item not in matrix_postgres_db_migration_request"
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- name: Check if the provided source database file exists
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stat:
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path: "{{ matrix_postgres_db_migration_request.src }}"
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register: matrix_postgres_db_migration_request_src_stat_result
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- name: Fail if provided source database file doesn't exist
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fail:
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msg: "File cannot be found on the server at {{ matrix_postgres_db_migration_request.src }}"
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when: "not matrix_postgres_db_migration_request_src_stat_result.stat.exists"
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- name: Fail if we cannot migrate on the current architecture ({{ matrix_architecture }})
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fail:
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msg: >-
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{{ matrix_postgres_db_migration_request.engine_variable_name }} (part of {{ matrix_postgres_db_migration_request.caller }}) has been set to `postgres` (which is our new default now).
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However, we've discovered an existing file-based database ({{ matrix_postgres_db_migration_request.engine_old }}) in {{ matrix_postgres_db_migration_request.src }}.
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It appears that you've been using this bridge with a file-based database engine until now.
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To continue using {{ matrix_postgres_db_migration_request.engine_old }}, opt into it explicitly: add `{{ matrix_postgres_db_migration_request.engine_variable_name }}: {{ matrix_postgres_db_migration_request.engine_old }}` to your vars.yml file and re-run this same command.
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We'd normally auto-migrate you to Postgres, but we can't do it on the {{ matrix_architecture }} architecture. Our pgloader container image only supports amd64 (for now).
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Learn more here: https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/740
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when: "matrix_architecture != 'amd64'"
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# Defaults
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- name: Set postgres_start_wait_time, if not provided
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set_fact:
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postgres_start_wait_time: 15
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when: "postgres_start_wait_time|default('') == ''"
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# Actual import work
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# matrix-postgres is most likely started already
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- name: Ensure matrix-postgres is started
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service:
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name: matrix-postgres
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state: started
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daemon_reload: yes
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register: matrix_postgres_service_start_result
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- name: Wait a bit, so that Postgres can start
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wait_for:
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timeout: "{{ postgres_start_wait_time }}"
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delegate_to: 127.0.0.1
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become: false
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when: "matrix_postgres_service_start_result.changed|bool"
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# We only stop services here, leaving it to the caller to start them later.
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#
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# We can't start them, because they probably need to be reconfigured too (changing the configuration from using SQLite to Postgres, etc.),
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# before starting.
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#
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# Since the caller will be starting them, it might make sense to leave stopping to it as well.
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# However, we don't do it, because it's simpler having it here, and it also gets to happen only if we'll be doing an import.
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# If we bailed out (somewhere above), nothing would have gotten stopped. It's nice to leave this running in such cases.
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- name: Ensure systemd services blocking the database import are stopped
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service:
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name: "{{ item }}"
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state: stopped
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with_items: "{{ matrix_postgres_db_migration_request.systemd_services_to_stop }}"
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- name: Import {{ matrix_postgres_db_migration_request.engine_old }} database from {{ matrix_postgres_db_migration_request.src }} into Postgres
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command:
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cmd: >-
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{{ matrix_host_command_docker }} run
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--rm
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--user={{ matrix_user_uid }}:{{ matrix_user_gid }}
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--cap-drop=ALL
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--network={{ matrix_docker_network }}
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--mount type=bind,src={{ matrix_postgres_db_migration_request.src }},dst=/in.db,ro
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--entrypoint=/bin/sh
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{{ matrix_postgres_pgloader_docker_image }}
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-c
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'pgloader {{ matrix_postgres_db_migration_request.pgloader_options|default([])|join(' ') }} /in.db {{ matrix_postgres_db_migration_request.dst }}'
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- name: Archive {{ matrix_postgres_db_migration_request.engine_old }} database ({{ matrix_postgres_db_migration_request.src }} -> {{ matrix_postgres_db_migration_request.src }}.backup)
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command:
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cmd: "mv {{ matrix_postgres_db_migration_request.src }} {{ matrix_postgres_db_migration_request.src }}.backup"
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- block:
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# We can't use `{{ role_path }}` here, neither with `import_tasks`, nor with `include_tasks`,
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# because it refers to the role that included this util, and not to the role this file belongs to.
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- import_tasks: "roles/matrix-postgres/tasks/util/detect_existing_postgres_version.yml"
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- set_fact:
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matrix_postgres_docker_image_to_use: "{{ matrix_postgres_docker_image_latest if matrix_postgres_detected_version_corresponding_docker_image == '' else matrix_postgres_detected_version_corresponding_docker_image }}"
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- name: Execute additional Postgres SQL migration statements
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command:
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cmd: >-
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{{ matrix_host_command_docker }} run
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--rm
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--user={{ matrix_user_uid }}:{{ matrix_user_gid }}
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--cap-drop=ALL
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--env-file={{ matrix_postgres_base_path }}/env-postgres-psql
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--network={{ matrix_docker_network }}
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{{ matrix_postgres_docker_image_to_use }}
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psql --host=matrix-postgres --dbname={{ matrix_postgres_db_migration_request.additional_psql_statements_db_name }} --command='{{ item }}'
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with_items: "{{ matrix_postgres_db_migration_request.additional_psql_statements_list }}"
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when: "matrix_postgres_db_migration_request.additional_psql_statements_list|default([])|length > 0"
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- name: Inject result
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set_fact:
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matrix_playbook_runtime_results: |
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{{
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matrix_playbook_runtime_results|default([])
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+
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[
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"NOTE: Your {{ matrix_postgres_db_migration_request.engine_old }} database file has been imported into Postgres. The original database file has been moved from `{{ matrix_postgres_db_migration_request.src }}` to `{{ matrix_postgres_db_migration_request.src }}.backup`. When you've confirmed that the import went well and everything works, you should be able to safely delete this file."
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]
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}}
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