# Mosaic bus host, one instance per business: mosaic-bus@<business>.
# Rendered by scripts/bus-service.sh from packages/cli/systemd/; @REPO@ and
# @PATH@ are filled in at install time. Edit the template and reinstall; do
# not edit the installed copy. The bus store allows one broker per data
# root, so run one instance per data root (packages/cli/README.md).
[Unit]
Description=Mosaic bus host (%i)
Documentation=file://@REPO@/packages/cli/README.md
StartLimitIntervalSec=600
StartLimitBurst=5

[Service]
Type=simple
WorkingDirectory=@REPO@
Environment=PATH=@PATH@
# The host reads the system config and the business file, boots the broker
# (packages/bus/src/process.mjs) and starts the notifier. Config problems and
# refusals exit 3, usage 4, invalid input 2: none of those is retried. A
# child that dies takes the host down with exit 1, and the unit restarts
# the pair.
ExecStart=@REPO@/scripts/mosaic bus start %i
Restart=on-failure
RestartSec=15
RestartPreventExitStatus=2 3 4
# `systemctl --user stop` sends SIGTERM to the host, which stops the
# notifier after its poll in flight, then closes the broker.
KillSignal=SIGTERM
KillMode=mixed
TimeoutStopSec=60
NoNewPrivileges=yes

[Install]
WantedBy=default.target