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Slavi PantaleevandClaude Opus 5 d534b00e04 Add a Molecule scenario for mautrix-meta-messenger
Stands the bridge up against the shared homeserver stub and checks that it
starts on the configuration the role rendered: the unit is active with no
automatic restarts, the appservice listener on 29319 answers, and the bridge
created its sqlite database under the role's data path as the role's uid.
Nothing is bridged - there is no Facebook or Messenger account involved and
there is deliberately never going to be one.

The thing worth proving for this role in particular is the Meta mode. One
upstream codebase serves several Meta networks, and
`matrix_bridge_mautrix_meta_messenger_meta_mode` is what picks which one; the
role expands it into an appservice id, a ghost username prefix, a bot
displayname and the bridge's `tor` switch. The scenario therefore runs in
`facebook-tor` mode rather than the role's default `messenger`, and asserts on
all four - against the parsed configuration, not substrings. The registration
namespaces are checked by what they match rather than by comparing regexes:
this mode's ghosts are covered, the default mode's are not.

Since v26.07 the Instagram bridge is published to the same image repository
with an `ig-` tag prefix, so the running image is compared against the whole
tag `defaults/main.yml` pins rather than by substring - an `ig-` prefix would
mean this role pulled the other bridge's image.

Surprising: the role's derived sqlite URI does not work. For `sqlite3-fk-wal`
it builds `sqlite:///` + the in-container path, and the bridge hands that to
go-sqlite3 as a plain filename rather than parsing it as a URL, so it dies at
startup with `unable to open database file: no such file or directory`. Every
other mautrix role here uses a bare path. The playbook selects postgres
whenever postgres is enabled, which is the default, so nothing normally reaches
that code path. The scenario overrides the URI rather than changing the role's
default, which is consumer-visible; matrix-bridge-mautrix-meta-instagram has
the same expression.

Falsified by setting `matrix_bridge_mautrix_meta_messenger_meta_mode` back to
`messenger` and re-running: the run failed at "Assert the configuration
reflects the Meta mode the scenario selected", on the
`appservice.id == 'facebook-tor'` clause.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SEH3vxYSQ5SV4N5z61eyGT
2026-08-27 18:02:53 +03:00

281 lines
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YAML

# SPDX-FileCopyrightText: 2026 Slavi Pantaleev
#
# SPDX-License-Identifier: AGPL-3.0-or-later
---
# What this proves: the bridge starts, reads the configuration and registration
# the role rendered, opens its appservice port, and is the Messenger-side image
# at the version the role pins.
#
# The extra thing worth proving for this role in particular is that
# `matrix_bridge_mautrix_meta_messenger_meta_mode` reaches every place it feeds:
# one upstream codebase serves several Meta networks, and the mode is what picks
# which one. The scenario runs the bridge in `facebook-tor` mode rather than the
# role's default `messenger`, so the assertions below can tell the two apart.
#
# It does NOT bridge anything - there is no Facebook or Messenger account on the
# other side and there is deliberately never going to be one. See
# docs/molecule-testing.md.
- name: Verify mautrix-meta-messenger
hosts: all
become: true
vars_files:
- "{{ lookup('env', 'MOLECULE_PROJECT_DIRECTORY') }}/../../../molecule-shared/vars.yml"
- "{{ lookup('env', 'MOLECULE_PROJECT_DIRECTORY') }}/../../../molecule-shared/playbook-context.yml"
# Lazily evaluated, so they are only resolved by the tasks that come after the
# matching slurp. Deliberately not set_fact: the rendered configuration
# contains the bridge's own Go templates (`{{.}}` in `username_template`), and
# a stored fact gets templated again on every lookup, which would try to
# evaluate those as Jinja.
vars:
mautrix_meta_messenger_config: "{{ mautrix_meta_messenger_config_file.content | b64decode | from_yaml }}"
mautrix_meta_messenger_registration: "{{ mautrix_meta_messenger_registration_file.content | b64decode | from_yaml }}"
mautrix_meta_messenger_labels_rendered: "{{ mautrix_meta_messenger_labels.content | b64decode }}"
gather_facts: false
tasks:
# Read from the role's own defaults rather than pinned in molecule.yml, so
# the version assertion below compares the running image against what the
# role ships instead of against the scenario itself.
- name: Load the role's defaults under a separate name
ansible.builtin.include_vars:
file: "{{ lookup('env', 'MOLECULE_PROJECT_DIRECTORY') }}/defaults/main.yml"
name: mautrix_meta_messenger_role_defaults
- name: Wait for the mautrix-meta-messenger service to become active
ansible.builtin.systemd_service:
name: matrix-mautrix-meta-messenger.service
register: mautrix_meta_messenger_service
until: mautrix_meta_messenger_service.status.ActiveState == 'active'
retries: 30
delay: 5
failed_when: false
# `Restart=always` means a bridge crash-looping on a configuration it cannot
# read still reports `active`, so the restart counter is checked too. It is
# asserted `is defined` because `| int` turns a missing property into 0 and
# would pass vacuously.
- name: Assert the service is active and has not been restarting
ansible.builtin.assert:
that:
- mautrix_meta_messenger_service.status.ActiveState == 'active'
- mautrix_meta_messenger_service.status.NRestarts is defined
- mautrix_meta_messenger_service.status.NRestarts | int == 0
fail_msg: >-
matrix-mautrix-meta-messenger.service is
{{ mautrix_meta_messenger_service.status.ActiveState | default('unknown') }}
after {{ mautrix_meta_messenger_service.status.NRestarts | default('?') }}
automatic restart(s)
success_msg: "matrix-mautrix-meta-messenger.service is active and has not restarted"
# The appservice port is the bridge's own listener, the one a homeserver
# would push transactions to. It opening at all means the bridge got through
# reading its configuration, through its /whoami check against the
# homeserver, and through setting itself up.
- name: Wait for the bridge to open its appservice port
ansible.builtin.command:
argv:
- docker
- run
- --rm
- --network={{ matrix_bridge_mautrix_meta_messenger_container_network }}
- "{{ molecule_shared_image_curl }}"
- --silent
- --output
- /dev/null
- --write-out
- "HTTP_STATUS=%{http_code}"
- "http://matrix-mautrix-meta-messenger:29319/_matrix/mau/live"
register: mautrix_meta_messenger_live
changed_when: false
until: "'HTTP_STATUS=000' not in mautrix_meta_messenger_live.stdout"
retries: 24
delay: 5
failed_when: false
- name: Assert the bridge answers on its appservice port
ansible.builtin.assert:
that:
- "'HTTP_STATUS=000' not in mautrix_meta_messenger_live.stdout"
fail_msg: >-
The bridge did not answer on its appservice port
({{ mautrix_meta_messenger_live.stdout | default('no output') }})
success_msg: "The bridge answers on its appservice port"
- name: Read the configuration the role rendered
ansible.builtin.slurp:
src: "{{ matrix_bridge_mautrix_meta_messenger_config_path }}/config.yaml"
register: mautrix_meta_messenger_config_file
# Each of these differs from what the bridge would use on its own, so their
# presence means the role's configuration is what the bridge is running on
# rather than something that happened to agree with it.
- name: Assert the rendered configuration carries this scenario's values
ansible.builtin.assert:
that:
- mautrix_meta_messenger_config.homeserver.address == matrix_bridge_mautrix_meta_messenger_homeserver_address
- mautrix_meta_messenger_config.homeserver.domain == matrix_bridge_mautrix_meta_messenger_homeserver_domain
- mautrix_meta_messenger_config.appservice.bot.username == matrix_bridge_mautrix_meta_messenger_appservice_username
- mautrix_meta_messenger_config.appservice.as_token == matrix_bridge_mautrix_meta_messenger_appservice_token
- mautrix_meta_messenger_config.appservice.hs_token == matrix_bridge_mautrix_meta_messenger_homeserver_token
- mautrix_meta_messenger_config.bridge.command_prefix == matrix_bridge_mautrix_meta_messenger_bridge_command_prefix
- mautrix_meta_messenger_config.logging.min_level == matrix_bridge_mautrix_meta_messenger_logging_min_level
# matrix_admin is empty in the shared context, so the only per-domain
# permission left is the one the role derives from the homeserver domain.
- mautrix_meta_messenger_config.bridge.permissions[matrix_bridge_mautrix_meta_messenger_homeserver_domain] == 'user'
# From the shared context rather than from this scenario, but the role
# is what has to carry it into the configuration.
- mautrix_meta_messenger_config.encryption.allow == matrix_bridges_encryption_enabled
fail_msg: "The rendered configuration does not carry the scenario's values"
success_msg: "The rendered configuration carries the scenario's values"
# The mode is the variable that makes this role family unusual, and it is
# not written into the configuration as-is: the role expands it into an
# appservice id, a ghost username prefix, a bot displayname and the bridge's
# `tor` switch. Each of these holds a different value under the role's
# default `messenger` mode, so together they are what proves the choice
# propagated rather than being ignored.
- name: Assert the configuration reflects the Meta mode the scenario selected
ansible.builtin.assert:
that:
- mautrix_meta_messenger_config.appservice.id == 'facebook-tor'
- mautrix_meta_messenger_config.appservice.username_template.startswith('facebook_')
- not mautrix_meta_messenger_config.appservice.username_template.startswith('messenger_')
- mautrix_meta_messenger_config.network.tor
- mautrix_meta_messenger_config.appservice.bot.displayname == 'Facebook-tor bridge bot'
- matrix_bridge_mautrix_meta_messenger_bridge_displayname_suffix in mautrix_meta_messenger_config.network.displayname_template
fail_msg: >-
The rendered configuration does not reflect
matrix_bridge_mautrix_meta_messenger_meta_mode=facebook-tor
success_msg: "The rendered configuration reflects the Meta mode the scenario selected"
# sqlite3-fk-wal was chosen in molecule.yml. The URI is a scenario override
# rather than the role's derived value - see the comment in molecule.yml -
# so what this checks is only that both reach the configuration. The real
# proof that the bridge is using the role's data path is the database file
# asserted further down.
- name: Assert the configuration points the bridge at the sqlite database the scenario chose
ansible.builtin.assert:
that:
- mautrix_meta_messenger_config.database.type == matrix_bridge_mautrix_meta_messenger_database_engine
- mautrix_meta_messenger_config.database.uri == matrix_bridge_mautrix_meta_messenger_appservice_database_uri
fail_msg: "The rendered configuration does not point the bridge at the scenario's sqlite database"
success_msg: "The rendered configuration points the bridge at the scenario's sqlite database"
# The public address is what the role builds out of the three exposure
# variables; it is the same endpoint the Traefik labels below route to.
- name: Assert the configuration carries the public address the exposure settings imply
ansible.builtin.assert:
that:
- mautrix_meta_messenger_config.appservice.public_address == 'https://bridges.molecule.local/bridges/meta-messenger'
fail_msg: >-
appservice.public_address is
{{ mautrix_meta_messenger_config.appservice.public_address | default('unset') }}
success_msg: "The rendered configuration carries the public address the exposure settings imply"
# The registration file is the half of the appservice handshake the
# homeserver reads, and it is generated by the role rather than by the
# bridge, so it is worth checking on its own.
- name: Read the appservice registration the role rendered
ansible.builtin.slurp:
src: "{{ matrix_bridge_mautrix_meta_messenger_config_path }}/registration.yaml"
register: mautrix_meta_messenger_registration_file
- name: Assert the registration carries the scenario's tokens, id and bot user
ansible.builtin.assert:
that:
- mautrix_meta_messenger_registration.as_token == matrix_bridge_mautrix_meta_messenger_appservice_token
- mautrix_meta_messenger_registration.hs_token == matrix_bridge_mautrix_meta_messenger_homeserver_token
- mautrix_meta_messenger_registration.id == 'facebook-tor'
- mautrix_meta_messenger_registration.sender_localpart == '_bot_' + matrix_bridge_mautrix_meta_messenger_appservice_username
- mautrix_meta_messenger_registration.url == 'http://matrix-mautrix-meta-messenger:29319'
fail_msg: "The appservice registration does not carry the scenario's tokens, id and bot user"
success_msg: "The appservice registration carries the scenario's tokens, id and bot user"
# The namespaces are regexes the role assembles, so rather than comparing
# them as strings - which would only re-derive the role's own escaping -
# they are checked by what they do: cover the bot, cover this mode's ghosts,
# and not cover the ghosts of the mode the role would have defaulted to.
- name: Assert the registration namespaces cover the bot and this mode's ghost users
ansible.builtin.assert:
that:
- mautrix_meta_messenger_ghost_regex | length > 0
- mautrix_meta_messenger_bot_regex | length > 0
- mautrix_meta_messenger_facebook_ghost_mxid is match(mautrix_meta_messenger_ghost_regex)
- mautrix_meta_messenger_messenger_ghost_mxid is not match(mautrix_meta_messenger_ghost_regex)
- mautrix_meta_messenger_bot_mxid is match(mautrix_meta_messenger_bot_regex)
fail_msg: "The appservice registration namespaces do not cover the bot and this mode's ghost users"
success_msg: "The appservice registration namespaces cover the bot and this mode's ghost users"
vars:
mautrix_meta_messenger_user_regexes: "{{ mautrix_meta_messenger_registration.namespaces.users | map(attribute='regex') | list }}"
mautrix_meta_messenger_ghost_regex: "{{ mautrix_meta_messenger_user_regexes | select('search', 'facebook_') | first | default('') }}"
mautrix_meta_messenger_bot_regex: "{{ mautrix_meta_messenger_user_regexes | reject('search', 'facebook_') | first | default('') }}"
mautrix_meta_messenger_facebook_ghost_mxid: "@facebook_1234567890:{{ matrix_bridge_mautrix_meta_messenger_homeserver_domain }}"
mautrix_meta_messenger_messenger_ghost_mxid: "@messenger_1234567890:{{ matrix_bridge_mautrix_meta_messenger_homeserver_domain }}"
mautrix_meta_messenger_bot_mxid: "@{{ matrix_bridge_mautrix_meta_messenger_appservice_username }}:{{ matrix_bridge_mautrix_meta_messenger_homeserver_domain }}"
# The cheap proof that the data path reached the process and is writable by
# the uid the role runs the container as.
- name: Look for the bridge's sqlite database under the role's data path
ansible.builtin.stat:
path: "{{ matrix_bridge_mautrix_meta_messenger_data_path }}/mautrix-meta.db"
register: mautrix_meta_messenger_database
- name: Assert the bridge created its database where the role put its data path
ansible.builtin.assert:
that:
- mautrix_meta_messenger_database.stat.exists
- mautrix_meta_messenger_database.stat.uid | int == matrix_user_uid | int
fail_msg: >-
The bridge did not create its database under
{{ matrix_bridge_mautrix_meta_messenger_data_path }}, or it is not owned by
uid {{ matrix_user_uid }}
success_msg: "The bridge created its database under the role's data path, as the role's uid"
- name: Read the image of the running container
ansible.builtin.command:
argv:
- docker
- container
- inspect
- matrix-mautrix-meta-messenger
- --format
- "{{ '{{' }} .Config.Image {{ '}}' }}"
register: mautrix_meta_messenger_image
changed_when: false
# Both Meta bridges are published to the same image repository, with
# Instagram's tags carrying an `ig-` prefix, so the tag is compared whole
# rather than by substring: an `ig-` prefix would mean this role pulled the
# other bridge's image.
- name: Assert the running container is the Messenger image at the version defaults/main.yml pins
ansible.builtin.assert:
that:
- mautrix_meta_messenger_image.stdout.endswith(':' + mautrix_meta_messenger_role_defaults.matrix_bridge_mautrix_meta_messenger_version)
fail_msg: >-
The running container is {{ mautrix_meta_messenger_image.stdout }}, which is not
the Messenger image at the pinned version
{{ mautrix_meta_messenger_role_defaults.matrix_bridge_mautrix_meta_messenger_version }}
success_msg: "The running container is the Messenger image at the version defaults/main.yml pins"
- name: Read the labels the role rendered
ansible.builtin.slurp:
src: "{{ matrix_bridge_mautrix_meta_messenger_base_path }}/labels"
register: mautrix_meta_messenger_labels
# Traefik is not running here, so what is checked is what the role wrote,
# not what a reverse-proxy would do with it. The port matters: it is
# hardcoded in the role's templates rather than derived from a variable, so
# nothing else in this scenario would catch it drifting from the port the
# bridge actually listens on.
- name: Assert the labels route the exposure hostname and path prefix to the appservice port
ansible.builtin.assert:
that:
- "'traefik.enable=true' in mautrix_meta_messenger_labels_rendered"
- "'traefik.http.services.matrix-mautrix-meta-messenger-appservice.loadbalancer.server.port=29319' in mautrix_meta_messenger_labels_rendered"
- "'traefik.http.routers.matrix-mautrix-meta-messenger-exposure.rule=Host(`bridges.molecule.local`) && PathPrefix(`/bridges/meta-messenger`)' in mautrix_meta_messenger_labels_rendered"
- "'traefik.http.middlewares.matrix-mautrix-meta-messenger-exposure-strip-prefix.stripprefix.prefixes=/bridges/meta-messenger' in mautrix_meta_messenger_labels_rendered"
- "'traefik.docker.network=' + matrix_bridge_mautrix_meta_messenger_container_network in mautrix_meta_messenger_labels_rendered"
fail_msg: "The rendered labels do not route the exposure hostname and path prefix to the appservice port"
success_msg: "The rendered labels route the exposure hostname and path prefix to the appservice port"