tcdb file

gistfile1.txt

#! /bin/sh


### # 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="tcdb"
app_root="/home/$app_user/testcasedb" 
pid_path="$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/tcdb && . /etc/default/tcdb

# Switch to the app_user if it is not he/she who is running the script. 

if [ "$USER" != "$app_user" ]; then

sudo -u "$app_user" -H -i $0 "$@"; 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

}

## 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 "$web_server_pid_path" ]; do
  sleep 0.1;
  i=$((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="$?"
else
  web_status="-1"
fi
if [ "$web_status" = "0" ]; then
  tcdb_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'
  tcdb_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 no parts of the service is running, bail out. 

exit_if_not_running(){

check_stale_pids
if [ "$web_status" != "0" ]; then
  echo "TestcaseDB is not running."
  exit
fi

}

## Starts Unicorn and Sidekiq if they're not running. 

start() {

check_stale_pids

if [ "$web_status" != "0" ]; then
  echo -n "Starting TestcaseDB Unicorn "
fi

# Then check if the service is running. If it is: don't start again.
if [ "$web_status" = "0" ]; then
  echo "The TestcaseDB Unicorn web server already running with pid $wpid, not restarting."
else
  # Remove old socket if it exists
  rm -f "$socket_path"/tcdb.socket 2>/dev/null
  # Start the web server
  RAILS_ENV=$RAILS_ENV script/web 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" ]; then
  echo -n "Shutting down TestcaseDB 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

# If something needs to be stopped, lets wait for it to stop. Never use SIGKILL in a script.
while [ "$web_status" = "0" ]; do
  sleep 1
  check_status
  printf "."
  if [ "$web_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" ]; then
    echo "The TestcaseDB Unicorn web server with pid $wpid is running."
else
    printf "The TestcaseDB Unicorn web server is \033[31mnot running\033[0m.\n"
fi

}

## Tells unicorn to reload it's config and Sidekiq to restart 

reload(){

exit_if_not_running
if [ "$wpid" = "0" ];then
  echo "The TestcaseDB Unicorn Web server is not running thus its configuration can't be reloaded."
  exit 1
fi
printf "Reloading TestcaseDB Unicorn configuration... "
RAILS_ENV=$RAILS_ENV script/web reload
echo "Done."

wait_for_pids
print_status

}

## Restarts Sidekiq and Unicorn. 

restart(){

check_status
if [ "$web_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 $tcdb_status
      ;;
*)
      echo "Usage: service tcdb {start|stop|restart|reload|status}"
      exit 1
      ;;

esac

exit