lib/support/init.d/gitlab_ci
#! /bin/sh
# GITLAB CI
# Maintainer: @randx
# Authors: rovanion.luckey@gmail.com, @randx, @jvanbaarsen
### BEGIN INIT INFO
# Provides: gitlab-ci
# Required-Start: $local_fs $remote_fs $network $syslog redis-server
# Required-Stop: $local_fs $remote_fs $network $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: GitLab CI
# Description: GitLab CI
### END INIT INFO
###
# DO NOT EDIT THIS FILE!
# This file will be overwritten on update.
# Instead add/change your variables in /etc/default/gitlab-ci
# An example defaults file can be found in lib/support/init.d/gitlab_ci.default.example
###
### Environment variables
RAILS_ENV="production"
# Script variable names should be lower-case not to conflict with
# internal /bin/sh variables such as PATH, EDITOR or SHELL.
app_user="gitlab_ci"
app_root="/home/$app_user/gitlab-ci"
pid_path="$app_root/tmp/pids"
socket_path="$app_root/tmp/sockets"
web_server_pid_path="$pid_path/unicorn.pid"
sidekiq_pid_path="$pid_path/sidekiq.pid"
# Read configuration variable file if it is present
test -f /etc/default/gitlab-ci && . /etc/default/gitlab-ci
# Switch to the app_user if it is not he/she who is running the script.
if [ "$USER" != "$app_user" ]; then
eval su - "$app_user" -c $(echo \")$0 "$@"$(echo \"); exit;
fi
# Switch to the gitlab path, exit on failure.
if ! cd "$app_root" ; then
echo "Failed to cd into $app_root, exiting!"; exit 1
fi
### Init Script functions
## Gets the pids from the files
check_pids(){
if ! mkdir -p "$pid_path"; then
echo "Could not create the path $pid_path needed to store the pids."
exit 1
fi
# If there exists a file which should hold the value of the Unicorn pid: read it.
if [ -f "$web_server_pid_path" ]; then
wpid=$(cat "$web_server_pid_path")
else
wpid=0
fi
if [ -f "$sidekiq_pid_path" ]; then
spid=$(cat "$sidekiq_pid_path")
else
spid=0
fi
}
## Called when we have started the two processes and are waiting for their pid files.
wait_for_pids(){
# We are sleeping a bit here mostly because sidekiq is slow at writing it's pid
i=0;
while [ ! -f $web_server_pid_path -o ! -f $sidekiq_pid_path ]; do
sleep 0.1;
i=$((i+1))
if [ $((i%10)) = 0 ]; then
echo -n "."
elif [ $((i)) = 301 ]; then
echo "Waited 30s for the processes to write their pids, something probably went wrong."
exit 1;
fi
done
echo
}
# We use the pids in so many parts of the script it makes sense to always check them.
# Only after start() is run should the pids change. Sidekiq sets it's own pid.
check_pids
## Checks whether the different parts of the service are already running or not.
check_status(){
check_pids
# If the web server is running kill -0 $wpid returns true, or rather 0.
# Checks of *_status should only check for == 0 or != 0, never anything else.
if [ $wpid -ne 0 ]; then
kill -0 "$wpid" 2>/dev/null
web_status="$?"
else
web_status="-1"
fi
if [ $spid -ne 0 ]; then
kill -0 "$spid" 2>/dev/null
sidekiq_status="$?"
else
sidekiq_status="-1"
fi
if [ $web_status = 0 -a $sidekiq_status = 0 ]; then
gitlab_status=0
else
# http://refspecs.linuxbase.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/iniscrptact.html
# code 3 means 'program is not running'
gitlab_status=3
fi
}
## Check for stale pids and remove them if necessary.
check_stale_pids(){
check_status
# If there is a pid it is something else than 0, the service is running if
# *_status is == 0.
if [ "$wpid" != "0" -a "$web_status" != "0" ]; then
echo "Removing stale Unicorn web server pid. This is most likely caused by the web server crashing the last time it ran."
if ! rm "$web_server_pid_path"; then
echo "Unable to remove stale pid, exiting."
exit 1
fi
fi
if [ "$spid" != "0" -a "$sidekiq_status" != "0" ]; then
echo "Removing stale Sidekiq web server pid. This is most likely caused by the Sidekiq crashing the last time it ran."
if ! rm "$sidekiq_pid_path"; then
echo "Unable to remove stale pid, exiting"
exit 1
fi
fi
}
## If no parts of the service is running, bail out.
exit_if_not_running(){
check_stale_pids
if [ "$web_status" != "0" -a "$sidekiq_status" != "0" ]; then
echo "GitLab CI is not running."
exit
fi
}
## Starts Unicorn and Sidekiq if they're not running.
start() {
check_stale_pids
if [ "$web_status" != "0" -a "$sidekiq_status" != "0" ]; then
echo -n "Starting both the GitLab CI Unicorn and Sidekiq"
elif [ "$web_status" != "0" ]; then
echo -n "Starting GitLab CI Sidekiq"
elif [ "$sidekiq_status" != "0" ]; then
echo -n "Starting GitLab CI Unicorn"
fi
# Then check if the service is running. If it is: don't start again.
if [ "$web_status" = "0" ]; then
echo "The GitLab CI Unicorn web server already running with pid $wpid, not restarting."
else
# Remove old socket if it exists
rm -f "$socket_path"/gitlab_ci.socket 2>/dev/null
# Start the web server
RAILS_ENV=$RAILS_ENV script/web start &
fi
# If sidekiq is already running, don't start it again.
if [ "$sidekiq_status" = "0" ]; then
echo "The GitLab CI Sidekiq job dispatcher is already running with pid $spid, not restarting"
else
RAILS_ENV=$RAILS_ENV script/background_jobs start &
fi
# Wait for the pids to be planted
wait_for_pids
# Finally check the status to tell wether or not GitLab is running
print_status
}
## Asks the Unicorn and the Sidekiq if they would be so kind as to stop, if not kills them.
stop() {
exit_if_not_running
if [ "$web_status" = "0" -a "$sidekiq_status" = "0" ]; then
echo -n "Shutting down both GitLab CI Unicorn and Sidekiq"
elif [ "$web_status" = "0" ]; then
echo -n "Shutting down GitLab CI Sidekiq"
elif [ "$sidekiq_status" = "0" ]; then
echo -n "Shutting down GitLab CI Unicorn"
fi
# If the Unicorn web server is running, tell it to stop;
if [ "$web_status" = "0" ]; then
RAILS_ENV=$RAILS_ENV script/web stop
fi
# And do the same thing for the Sidekiq.
if [ "$sidekiq_status" = "0" ]; then
RAILS_ENV=$RAILS_ENV script/background_jobs stop
fi
# If something needs to be stopped, lets wait for it to stop. Never use SIGKILL in a script.
while [ "$web_status" = "0" -o "$sidekiq_status" = "0" ]; do
sleep 1
check_status
printf "."
if [ "$web_status" != "0" -a "$sidekiq_status" != "0" ]; then
printf "\n"
break
fi
done
sleep 1
# Cleaning up unused pids
rm "$web_server_pid_path" 2>/dev/null
# rm "$sidekiq_pid_path" # Sidekiq seems to be cleaning up it's own pid.
print_status
}
## Prints the status of GitLab CI and it's components.
print_status() {
check_status
if [ "$web_status" != "0" -a "$sidekiq_status" != "0" ]; then
echo "GitLab CI is not running."
return
fi
if [ "$web_status" = "0" ]; then
echo "The GitLab CI Unicorn web server with pid $wpid is running."
else
printf "The GitLab CI Unicorn web server is \033[31mnot running\033[0m.\n"
fi
if [ "$sidekiq_status" = "0" ]; then
echo "The GitLab CI Sidekiq job dispatcher with pid $spid is running."
else
printf "The GitLab CI Sidekiq job dispatcher is \033[31mnot running\033[0m.\n"
fi
if [ "$web_status" = "0" -a "$sidekiq_status" = "0" ]; then
printf "GitLab CI and all its components are \033[32mup and running\033[0m.\n"
fi
}
## Tells unicorn to reload it's config and Sidekiq to restart
reload(){
exit_if_not_running
if [ "$wpid" = "0" ];then
echo "The GitLab CI Unicorn Web server is not running thus its configuration can't be reloaded."
exit 1
fi
printf "Reloading GitLab CI Unicorn configuration... "
RAILS_ENV=$RAILS_ENV script/web reload
echo "Done."
echo "Restarting GitLab CI Sidekiq since it isn't capable of reloading its config..."
RAILS_ENV=$RAILS_ENV script/background_jobs restart
wait_for_pids
print_status
}
## Restarts Sidekiq and Unicorn.
restart(){
check_status
if [ "$web_status" = "0" -o "$sidekiq_status" = "0" ]; then
stop
fi
start
}
### Finally the input handling.
case "$1" in
start)
start
;;
stop)
stop
;;
restart)
restart
;;
reload|force-reload)
reload
;;
status)
print_status
exit $gitlab_status
;;
*)
echo "Usage: service gitlab_ci {start|stop|restart|reload|status}"
exit 1
;;
esac
exit