matrix-docker-ansible-deploy/roles/matrix-synapse/tasks/rust-synapse-compress-state/main.yml

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2021-08-13 08:05:57 +00:00
# Pre-checks
- name: Fail if Postgres not enabled
fail:
msg: "Postgres via the matrix-postgres role is not enabled (`matrix_postgres_enabled`). Cannot use rust-synapse-compress-state."
when: "not matrix_postgres_enabled|bool"
# Defaults
- name: Set matrix_synapse_rust_synapse_compress_state_find_rooms_command_wait_time, if not provided
set_fact:
matrix_synapse_rust_synapse_compress_state_find_rooms_command_wait_time: 300
when: "matrix_synapse_rust_synapse_compress_state_find_rooms_command_wait_time|default('') == ''"
- name: Set matrix_synapse_rust_synapse_compress_state_compress_room_time, if not provided
set_fact:
matrix_synapse_rust_synapse_compress_state_compress_room_time: 1800
when: "matrix_synapse_rust_synapse_compress_state_compress_room_time|default('') == ''"
- name: Set matrix_synapse_rust_synapse_compress_state_psql_import_time, if not provided
set_fact:
matrix_synapse_rust_synapse_compress_state_psql_import_time: 1800
when: "matrix_synapse_rust_synapse_compress_state_psql_import_time|default('') == ''"
- name: Set matrix_synapse_rust_synapse_compress_state_min_state_groups_required, if not provided
set_fact:
# The minimum number of state groups we're looking for before we consider a room eligible for compression.
# Rooms with a smaller state groups count will not be compressed.
matrix_synapse_rust_synapse_compress_state_min_state_groups_required: 100000
when: "matrix_synapse_rust_synapse_compress_state_min_state_groups_required|default('') == ''"
# Actual compression work
- name: Ensure rust-synapse-compress-state paths exist
file:
path: "{{ matrix_synapse_rust_synapse_compress_state_base_path }}"
state: directory
mode: 0750
owner: "{{ matrix_user_username }}"
group: "{{ matrix_user_groupname }}"
- name: Ensure rust-synapse-compress-state image is pulled
docker_image:
name: "{{ matrix_synapse_rust_synapse_compress_state_docker_image }}"
source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
force_source: "{{ matrix_synapse_rust_synapse_compress_state_docker_image_force_pull if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_synapse_rust_synapse_compress_state_docker_image_force_pull }}"
- name: Generate rust-synapse-compress-state room find command
set_fact:
matrix_synapse_rust_synapse_compress_state_find_rooms_command: >-
{{ matrix_host_command_docker }} run --rm --name matrix-rust-synapse-compress-state-find-rooms
--user={{ matrix_user_uid }}:{{ matrix_user_gid }}
--cap-drop=ALL
--network={{ matrix_docker_network }}
--env-file={{ matrix_postgres_base_path }}/env-postgres-psql
{{ matrix_postgres_docker_image_latest }}
psql -v ON_ERROR_STOP=1 -h matrix-postgres {{ matrix_synapse_database_database }} -c
'SELECT array_to_json(array_agg(row_to_json (r))) FROM (SELECT room_id, count(*) AS count FROM state_groups_state GROUP BY room_id HAVING count(*) > {{ matrix_synapse_rust_synapse_compress_state_min_state_groups_required }} ORDER BY count DESC) r;'
- name: Find rooms eligible for compression with rust-synapse-compress-state
command: "{{ matrix_synapse_rust_synapse_compress_state_find_rooms_command }}"
async: "{{ matrix_synapse_rust_synapse_compress_state_find_rooms_command_wait_time }}"
poll: 10
register: matrix_synapse_rust_synapse_compress_state_find_rooms_command_result
# We expect the output to be like this:
#
# "stdout_lines": [
# " array_to_json ",
# "----------------------------------------------------------------------------------------------------------------------------",
# " [{\"room_id\":\"!some-id\",\"count\":2461329},{\"room_id\":\"!another-id\",\"count\":512017}]",
# "(1 row)"
# ]
#
# Row 3 (out of 4) contains the actual result.
#
# Row 3 contains a space when there's no result.
- block:
- debug: var="matrix_synapse_rust_synapse_compress_state_find_rooms_command_result"
- name: Fail if room find result is not what we expect
fail:
msg: >-
Expecting 4 lines in the "find rooms" result.
when: "matrix_synapse_rust_synapse_compress_state_find_rooms_command_result.failed or matrix_synapse_rust_synapse_compress_state_find_rooms_command_result.stdout_lines|length != 4"
- block:
# matrix_synapse_rust_synapse_compress_state_eligible_rooms is a list
# of dictionaries like this: {'room_id': '!some-id', 'count': 2461329}
- set_fact:
matrix_synapse_rust_synapse_compress_state_eligible_rooms: "{{ matrix_synapse_rust_synapse_compress_state_find_rooms_command_result.stdout_lines[2] | from_json }}"
- name: Display rooms that will be compressed
debug:
msg: >-
The following rooms contain more than {{ matrix_synapse_rust_synapse_compress_state_min_state_groups_required }} state group rows
(configurable via `matrix_synapse_rust_synapse_compress_state_min_state_groups_required`)
and will be compressed:
{{ matrix_synapse_rust_synapse_compress_state_eligible_rooms }}
- name: Compress room state
include_tasks: "{{ role_path }}/tasks/rust-synapse-compress-state/compress_room.yml"
with_items: "{{ matrix_synapse_rust_synapse_compress_state_eligible_rooms }}"
loop_control:
loop_var: room_details
when: "matrix_synapse_rust_synapse_compress_state_find_rooms_command_result.stdout_lines[2] != ' '"
- name: Show notice about lack of rooms to compress
debug:
msg: >-
No rooms were found to contain more than {{ matrix_synapse_rust_synapse_compress_state_min_state_groups_required }} state group rows
(configurable via `matrix_synapse_rust_synapse_compress_state_min_state_groups_required`),
so there's nothing to compress.
when: "matrix_synapse_rust_synapse_compress_state_find_rooms_command_result.stdout_lines[2] == ' '"