#
# This file tells systemd how to run Sidekiq as a 24/7 long-running daemon.
#
# Use `journalctl -u sidekiq -rn 100` to view the last 100 lines of log output.
#
[Unit]
Description=sidekiq
# 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=/u/apps/{{project_name}}/current
ExecStart=/usr/local/bin/bundle exec sidekiq -e {{rails_env}} --queue {{hostname}} {{ job_queues | map('regex_replace',  '^(.*)$', '--queue \\1') | join(' ') }}

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

# Uncomment this if you are going to use this as a system service
# if using as a user service then leave commented out, or you will get an error trying to start the service
# !!! Change this to your deploy user account if you are using this as a system service !!!
User=deploy
Group=deploy
UMask=0002

# Greatly reduce Ruby memory fragmentation and heap usage
# https://www.mikeperham.com/2018/04/25/taming-rails-memory-bloat/
Environment=MALLOC_ARENA_MAX=2

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

# output goes to /var/log/syslog (Ubuntu) or /var/log/messages (CentOS)
StandardOutput=syslog
StandardError=syslog

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

[Install]
WantedBy=multi-user.target