matrix-docker-ansible-deploy/roles/matrix-synapse/templates/synapse/systemd/matrix-synapse-worker@.service.j2

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#jinja2: lstrip_blocks: "True"
# Instantiable worker service, running inside the synapse container
# alongside the homeserver main process.
# c.f. https://github.com/matrix-org/synapse/pull/4662
[Unit]
Description=Matrix worker synapse.app.%i
AssertPathExists={{ matrix_synapse_config_dir_path }}/worker.%i.yaml
After=matrix-synapse.service
BindsTo=matrix-synapse.service
[Service]
Type=simple
# Intentional delay, so that the homeserver can manage to start.
ExecStartPre={{ matrix_host_command_sleep }} 5
# no sane way of instancing more than one variable (systemd "cant-fix" 🤦)
# c.f. https://github.com/systemd/systemd/issues/14895#issuecomment-594123923
# So use good ol' shell parameter expansion to get the worker type..
ExecStart=/bin/sh -c "WORKER=%i; WORKER=$${WORKER%%:*}; \
exec {{ matrix_host_command_docker }} exec \
--user={{ matrix_user_uid }}:{{ matrix_user_gid }} \
matrix-synapse \
python -m synapse.app.$${WORKER} -c /data/homeserver.yaml -c /data/worker.%i.yaml"
# wait for worker startup & write out PID of actual worker process so systemd can handle it
ExecStartPost={{ matrix_host_command_sleep }} 5
ExecStartPost={{ matrix_local_bin_path }}/matrix-synapse-worker-write-pid %i /run/matrix-synapse-worker.%i.pid
ExecReload=/bin/kill -HUP $MAINPID
ExecStop=/bin/kill $MAINPID
PIDFile=/run/matrix-synapse-worker.%i.pid
KillMode=process
Restart=always
RestartSec=10
SyslogIdentifier=matrix-synapse-%i
[Install]
WantedBy=matrix-synapse.service