# Source: https://github.com/mperham/sidekiq/blob/master/examples/systemd/sidekiq.service
#
# This file tells systemd how to run Sidekiq as a 24/7 long-running daemon.
#
# Customize this file based on your bundler location, app directory, etc.
# Customize and copy this into /usr/lib/systemd/system (CentOS) or /lib/systemd/system (Ubuntu).
# Then run:
#   - systemctl enable sidekiq
#   - systemctl {start,stop,restart} sidekiq
#
# This file corresponds to a single Sidekiq process.  Add multiple copies
# to run multiple processes (sidekiq-1, sidekiq-2, etc).
#
# Use `journalctl -u sidekiq -rn 100` to view the last 100 lines of log output.
#
[Unit]
Description=sidekiq for <%= "#{fetch(:application)} (#{fetch(:stage)})" %>
# start us only once the network and logging subsystems are available,
# consider adding redis-server.service if Redis is local and systemd-managed.
After=syslog.target network.target

# See these pages for lots of options:
#
#   https://www.freedesktop.org/software/systemd/man/systemd.service.html
#   https://www.freedesktop.org/software/systemd/man/systemd.exec.html
#
# THOSE PAGES ARE CRITICAL FOR ANY LINUX DEVOPS WORK; read them multiple
# times! systemd is a critical tool for all developers to know and understand.
#
[Service]
#
#      !!!!  !!!!  !!!!
#
# As of v6.0.6, Sidekiq automatically supports systemd's `Type=notify` and watchdog service
# monitoring. If you are using an earlier version of Sidekiq, change this to `Type=simple`
# and remove the `WatchdogSec` line.
#
#      !!!!  !!!!  !!!!
#
Type=notify
# If your Sidekiq process locks up, systemd's watchdog will restart it within seconds.
WatchdogSec=10

WorkingDirectory=<%= File.join(fetch(:deploy_to), 'current') %>
ExecStart=<%= expanded_bundle_path %> exec sidekiq -e <%= fetch(:sidekiq_env) %> <%= sidekiq_config %> <%= sidekiq_concurrency %> <%= sidekiq_queues %>

# Use `systemctl kill -s TSTP sidekiq` to quiet the Sidekiq process

<%="User=#{sidekiq_user}" if sidekiq_user %>
UMask=0002

<%="EnvironmentFile=#{File.join(fetch(:deploy_to), 'current')}/#{fetch(:sidekiq_service_unit_env_file)}" if fetch(:sidekiq_service_unit_env_file) %>

<% fetch(:sidekiq_service_unit_env_vars, []).each do |environment_variable| %>
  <%="Environment=#{environment_variable}" %>
<% end %>

# if we crash, restart
RestartSec=1
Restart=on-failure

# output goes to /var/log/syslog (Ubuntu) or /var/log/messages (CentOS)
<%="StandardOutput=append:#{fetch(:sidekiq_log)}" if fetch(:sidekiq_log) %>
<%="StandardError=append:#{fetch(:sidekiq_error_log)}" if fetch(:sidekiq_error_log) %>

# This will default to "bundler" if we don't specify it
SyslogIdentifier=sidekiq

[Install]
WantedBy=default.target