launcher

   1 #/bin/bash
   2
   3 command=$1
   4 config=$2
   5 config_file="$config".yml
   6 cidfile=cids/"$config".cid
   7 cidbootstrap=cids/"$config"_boostrap.cid
   8 image=samsaffron/discourse
   9 docker_path=`which docker`
  10
  11 usage () {
  12   echo "Usage: launcher COMMAND CONFIG"
  13   echo "Commands:"
  14   echo "    start:      Start/initialize a container"
  15   echo "    stop:       Stop a running container"
  16   echo "    restart:    Restart a container"
  17   echo "    destroy:    Stop and remove a container"
  18   echo "    ssh:        Start a bash shell in a running container"
  19   echo "    logs:       Docker logs for container"
  20   echo "    bootstrap:  Bootstrap a container for the config base on an image"
  21   exit 1
  22 }
  23
  24 install_docker() {
  25
  26   echo "Docker is not installed, make sure you are running on the 3.8 kernel"
  27   echo "The best supported Docker release is Ubuntu 12.04.03 for it run the following"
  28   echo
  29   echo "sudo apt-get update"
  30   echo "sudo apt-get install linux-image-generic-lts-raring linux-headers-generic-lts-raring"
  31   echo "sudo reboot"
  32   echo
  33
  34   echo "sudo sh -c \"wget -qO- https://get.docker.io/gpg | apt-key add -\""
  35   echo "sudo sh -c \"echo deb http://get.docker.io/ubuntu docker main > /etc/apt/sources.list.d/docker.list\""
  36   echo "sudo apt-get update"
  37   echo "sudo apt-get install lxc-docker"
  38
  39   exit 1
  40 }
  41
  42 [ -z $docker_path ] && {
  43   install_docker
  44 }
  45
  46
  47 [ $# -ne 2 ] && {
  48   usage
  49 }
  50
  51 if [ ! -e $config_file ]
  52   then
  53     echo "Config file was not found, ensure $config_file exists"
  54     exit 1
  55 fi
  56
  57 case "$command" in
  58   bootstrap)
  59       exec cat $config_file | docker run -cidfile $cidbootstrap -i -a stdin -a stdout -a stderr -v `pwd`/shared:/shared samsaffron/discourse /pups/bin/pups --stdin
  60       sleep 5
  61       docker commit `cat $cidbootstrap` samsaffron/discourse $config
  62       docker rm `cat $cidbootstrap` && rm $cidbootstrap
  63       exit 0
  64       ;;
  65
  66   ssh)
  67       if [ ! -e $cidfile ]
  68          then
  69            echo "No cid found"
  70            exit 1
  71          else
  72            cid="`cat $cidfile`"
  73            address="`docker port $cid 22`"
  74            split=(${address//:/ })
  75            exec ssh root@${split[0]} -p ${split[1]}
  76       fi
  77       ;;
  78
  79   stop)
  80       if [ ! -e $cidfile ]
  81          then
  82            echo "No cid found"
  83            exit 1
  84          else
  85            docker stop -t 10 `cat $cidfile`
  86            exit 0
  87       fi
  88       ;;
  89
  90   logs)
  91
  92       if [ ! -e $cidfile ]
  93          then
  94            echo "No cid found"
  95            exit 1
  96          else
  97            docker logs `cat $cidfile`
  98            exit 0
  99       fi
 100       ;;
 101
 102   start)
 103
 104       if [ ! -e $cidfile ]
 105          then
 106            echo "No cid found, creating a new container"
 107            ports=`cat $config_file | docker run -rm -i -a stdout -a stdin samsaffron/discourse ruby -e "require 'yaml'; puts YAML.load(STDIN.readlines.join)['expose'].map{|p| '-p ' << p.to_s << ' '}.join"`
 108            echo $ports
 109            docker run -cidfile $cidfile $ports -d -v `pwd`/shared:/shared samsaffron/discourse:$config /usr/bin/runsvdir -P /etc/service
 110            exit 0
 111          else
 112            echo "cid found, ensuring container is started"
 113            docker start `cat $cidfile`
 114            exit 0
 115       fi
 116       ;;
 117
 118
 119   destroy)
 120       if [ -e $cidfile ]
 121         then
 122           echo "destroying container $cidfile"
 123           docker stop -t 10 `cat $cidfile`
 124           docker rm `cat $cidfile` && rm $cidfile
 125           exit 0
 126         else
 127           echo "nothing to destroy cidfile does not exist"
 128           exit 1
 129       fi
 130       ;;
 131 esac
 132
 133 usage