launcher

   1 #!/bin/bash
   2
   3 usage () {
   4   echo "Usage: launcher COMMAND CONFIG [--skip-prereqs] [--docker-args STRING]"
   5   echo "Commands:"
   6   echo "    start:       Start/initialize a container"
   7   echo "    stop:        Stop a running container"
   8   echo "    restart:     Restart a container"
   9   echo "    destroy:     Stop and remove a container"
  10   echo "    enter:       Open a shell to run commands inside the container"
  11   echo "    logs:        View the Docker logs for a container"
  12   echo "    bootstrap:   Bootstrap a container for the config based on a template"
  13   echo "    run:         Run the given command with the config in the context of the last bootstrapped image"
  14   echo "    rebuild:     Rebuild a container (destroy old, bootstrap, start new)"
  15   echo "    cleanup:     Remove all containers that have stopped for > 24 hours"
  16   echo
  17   echo "Options:"
  18   echo "    --skip-prereqs             Don't check launcher prerequisites"
  19   echo "    --docker-args              Extra arguments to pass when running docker"
  20   echo "    --skip-mac-address         Don't assign a mac address"
  21   echo "    --run-image                Override the image used for running the container"
  22   exit 1
  23 }
  24
  25 command=$1
  26 config=$2
  27 user_args=""
  28 user_run_image=""
  29
  30 if [[ $command == "run" ]]; then
  31   run_command=$3
  32 fi
  33
  34 while [ ${#} -gt 0 ]; do
  35   case "${1}" in
  36   --debug)
  37     DEBUG="1"
  38     ;;
  39   --skip-prereqs)
  40     SKIP_PREREQS="1"
  41     ;;
  42   --skip-mac-address)
  43     SKIP_MAC_ADDRESS="1"
  44     ;;
  45   --docker-args)
  46     user_args="$2"
  47     shift
  48     ;;
  49   --run-image)
  50     user_run_image="$2"
  51     shift
  52     ;;
  53   esac
  54
  55   shift 1
  56 done
  57
  58 if [ -z "$command" -o -z "$config" -a "$command" != "cleanup" ]; then
  59   usage
  60   exit 1
  61 fi
  62
  63 # Docker doesn't like uppercase characters, spaces or special characters, catch it now before we build everything out and then find out
  64 re='[[:upper:]/ !@#$%^&*()+~`=]'
  65 if [[ $config =~ $re ]];
  66   then
  67     echo
  68     echo "ERROR: Config name '$config' must not contain upper case characters, spaces or special characters. Correct config name and rerun $0."
  69     echo
  70     exit 1
  71 fi
  72
  73 cd "$(dirname "$0")"
  74
  75 docker_min_version='17.03.1'
  76 docker_rec_version='17.06.2'
  77 git_min_version='1.8.0'
  78 git_rec_version='1.8.0'
  79
  80 config_file=containers/"$config".yml
  81 cidbootstrap=cids/"$config"_bootstrap.cid
  82 local_discourse=local_discourse
  83 image=discourse/base:2.0.20181031
  84 docker_path=`which docker.io || which docker`
  85 git_path=`which git`
  86
  87 if [ "${SUPERVISED}" = "true" ]; then
  88   restart_policy="--restart=no"
  89   attach_on_start="-a"
  90   attach_on_run="-a stdout -a stderr"
  91 else
  92   attach_on_run="-d"
  93 fi
  94
  95 if [ -n "$DOCKER_HOST" ]; then
  96   docker_ip=`sed -e 's/^tcp:\/\/\(.*\):.*$/\1/' <<< "$DOCKER_HOST"`
  97 elif [ -x "$(which ip 2>/dev/null)" ]; then
  98   docker_ip=`ip addr show docker0 | \
  99                   grep 'inet ' | \
 100                   awk '{ split($2,a,"/"); print a[1] }';`
 101 else
 102   docker_ip=`ifconfig | \
 103                   grep -B1 "inet addr" | \
 104                   awk '{ if ( $1 == "inet" ) { print $2 } else if ( $2 == "Link" ) { printf "%s:" ,$1 } }' | \
 105                   grep docker0 | \
 106                   awk -F: '{ print $3 }';`
 107 fi
 108
 109 # From https://stackoverflow.com/a/44660519/702738
 110 compare_version() {
 111     if [[ $1 == $2 ]]; then
 112         return 1
 113     fi
 114     local IFS=.
 115     local i a=(${1%%[^0-9.]*}) b=(${2%%[^0-9.]*})
 116     local arem=${1#${1%%[^0-9.]*}} brem=${2#${2%%[^0-9.]*}}
 117     for ((i=0; i<${#a[@]} || i<${#b[@]}; i++)); do
 118         if ((10#${a[i]:-0} < 10#${b[i]:-0})); then
 119             return 1
 120         elif ((10#${a[i]:-0} > 10#${b[i]:-0})); then
 121             return 0
 122         fi
 123     done
 124     if [ "$arem" '<' "$brem" ]; then
 125         return 1
 126     elif [ "$arem" '>' "$brem" ]; then
 127         return 0
 128     fi
 129     return 1
 130 }
 131
 132
 133 install_docker() {
 134   echo "Docker is not installed, you will need to install Docker in order to run Launcher"
 135   echo "See https://docs.docker.com/installation/"
 136   exit 1
 137 }
 138
 139 check_prereqs() {
 140
 141   if [ -z $docker_path ]; then
 142     install_docker
 143   fi
 144
 145   # 1. docker daemon running?
 146   # we send stderr to /dev/null cause we don't care about warnings,
 147   # it usually complains about swap which does not matter
 148   test=`$docker_path info 2> /dev/null`
 149   if [[ $? -ne 0 ]] ; then
 150     echo "Cannot connect to the docker daemon - verify it is running and you have access"
 151     exit 1
 152   fi
 153
 154   # 2. running an approved storage driver?
 155   if ! $docker_path info 2> /dev/null | egrep -q '^Storage Driver: (aufs|btrfs|zfs|overlay|overlay2)$'; then
 156     echo "Your Docker installation is not using a supported storage driver.  If we were to proceed you may have a broken install."
 157     echo "aufs is the recommended storage driver, although zfs/btrfs/overlay and overlay2 may work as well."
 158     echo "Other storage drivers are known to be problematic."
 159     echo "You can tell what filesystem you are using by running \"docker info\" and looking at the 'Storage Driver' line."
 160     echo
 161     echo "If you wish to continue anyway using your existing unsupported storage driver,"
 162     echo "read the source code of launcher and figure out how to bypass this check."
 163     exit 1
 164   fi
 165
 166   # 3. running recommended docker version
 167   test=($($docker_path --version))  # Get docker version string
 168   test=${test[2]//,/}  # Get version alone and strip comma if exists
 169
 170   # At least minimum docker version
 171   if compare_version "${docker_min_version}" "${test}"; then
 172     echo "ERROR: Docker version ${test} not supported, please upgrade to at least ${docker_min_version}, or recommended ${docker_rec_version}"
 173     exit 1
 174   fi
 175
 176   # Recommend newer docker version
 177   if compare_version "${docker_rec_version}" "${test}"; then
 178     echo "WARNING: Docker version ${test} deprecated, recommend upgrade to ${docker_rec_version} or newer."
 179   fi
 180
 181   # 4. discourse docker image is downloaded
 182   test=`$docker_path images | awk '{print $1 ":" $2 }' | grep "$image"`
 183
 184   if [ -z "$test" ]; then
 185     echo
 186     echo "WARNING: We are about to start downloading the Discourse base image"
 187     echo "This process may take anywhere between a few minutes to an hour, depending on your network speed"
 188     echo
 189     echo "Please be patient"
 190     echo
 191   fi
 192
 193   # 5. running recommended git version
 194   test=($($git_path --version))  # Get git version string
 195   test=${test[2]//,/}  # Get version alone and strip comma if exists
 196
 197   # At least minimum version
 198   if compare_version "${git_min_version}" "${test}"; then
 199     echo "ERROR: Git version ${test} not supported, please upgrade to at least ${git_min_version}, or recommended ${git_rec_version}"
 200     exit 1
 201   fi
 202
 203   # Recommend best version
 204   if compare_version "${git_rec_version}" "${test}"; then
 205     echo "WARNING: Git version ${test} deprecated, recommend upgrade to ${git_rec_version} or newer."
 206   fi
 207
 208   # 6. able to attach stderr / out / tty
 209   test=`$docker_path run $user_args -i --rm -a stdout -a stderr $image echo working`
 210   if [[ "$test" =~ "working" ]] ; then : ; else
 211     echo "Your Docker installation is not working correctly"
 212     echo
 213     echo "See: https://meta.discourse.org/t/docker-error-on-bootstrap/13657/18?u=sam"
 214     exit 1
 215   fi
 216
 217   # 7. enough space for the bootstrap on docker folder
 218   folder=`$docker_path info --format '{{.DockerRootDir}}'`
 219   safe_folder=${folder:-/var/lib/docker}
 220   test=$(($(stat -f --format="%a*%S" $safe_folder)/1024**3 < 5))
 221   if [[ $test -ne 0 ]] ; then
 222     echo "You have less than 5GB of free space on the disk where $safe_folder is located. You will need more space to continue"
 223     df -h $safe_folder
 224     echo
 225     read -p "Would you like to attempt to recover space by cleaning docker images and containers in the system?(y/N)" -n 1 -r
 226     echo
 227     if [[ $REPLY =~ ^[Yy]$ ]]
 228     then
 229       docker system prune
 230       echo "If the cleanup was successful, you may try again now"
 231     fi
 232     exit 1
 233   fi
 234 }
 235
 236
 237 if [ -z "$SKIP_PREREQS" ] && [ "$command" != "cleanup" ]; then
 238   check_prereqs
 239 fi
 240
 241 host_run() {
 242   read -r -d '' env_ruby << 'RUBY'
 243   require 'yaml'
 244
 245   input = STDIN.readlines.join
 246   yaml = YAML.load(input)
 247
 248   if host_run = yaml['host_run']
 249     params = yaml['params'] || {}
 250     host_run.each do |run|
 251       params.each do |k,v|
 252         run = run.gsub("$#{k}", v)
 253       end
 254       STDOUT.write "#{run}--SEP--"
 255     end
 256   end
 257 RUBY
 258
 259   host_run=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e "$env_ruby"`
 260
 261   while [ "$host_run" ] ; do
 262     iter=${host_run%%--SEP--*}
 263     echo
 264     echo "Host run: $iter"
 265     $iter || exit 1
 266     echo
 267     host_run="${host_run#*--SEP--}"
 268   done
 269 }
 270
 271
 272 set_volumes() {
 273   volumes=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e \
 274         "require 'yaml'; puts YAML.load(STDIN.readlines.join)['volumes'].map{|v| '-v ' << v['volume']['host'] << ':' << v['volume']['guest'] << ' '}.join"`
 275 }
 276
 277 set_links() {
 278     links=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e \
 279         "require 'yaml'; puts YAML.load(STDIN.readlines.join)['links'].map{|l| '--link ' << l['link']['name'] << ':' << l['link']['alias'] << ' '}.join"`
 280 }
 281
 282 find_templates() {
 283     local templates=`cat $1 | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
 284       "require 'yaml'; puts YAML.load(STDIN.readlines.join)['templates']"`
 285
 286     local arrTemplates=${templates// / }
 287
 288     if [ ! -z "$templates" ]; then
 289       for template in "${arrTemplates[@]}"
 290       do
 291         local nested_templates=$(find_templates $template)
 292
 293         if [ ! -z "$nested_templates" ]; then
 294           templates="$templates $nested_templates"
 295         fi
 296       done
 297
 298       echo $templates
 299     else
 300       echo ""
 301     fi
 302 }
 303
 304 set_template_info() {
 305     templates=$(find_templates $config_file)
 306
 307     arrTemplates=(${templates// / })
 308     config_data=$(cat $config_file)
 309
 310     input="hack: true"
 311
 312     for template in "${arrTemplates[@]}"
 313     do
 314       [ ! -z $template ] && {
 315         input="$input _FILE_SEPERATOR_ $(cat $template)"
 316       }
 317     done
 318
 319     # we always want our config file last so it takes priority
 320     input="$input _FILE_SEPERATOR_ $config_data"
 321
 322     read -r -d '' env_ruby << 'RUBY'
 323     require 'yaml'
 324
 325     input=STDIN.readlines.join
 326     # default to UTF-8 for the dbs sake
 327     env = {'LANG' => 'en_US.UTF-8'}
 328     input.split('_FILE_SEPERATOR_').each do |yml|
 329        yml.strip!
 330        begin
 331          env.merge!(YAML.load(yml)['env'] || {})
 332        rescue Psych::SyntaxError => e
 333         puts e
 334         puts "*ERROR."
 335        rescue => e
 336         puts yml
 337         p e
 338        end
 339     end
 340     puts env.map{|k,v| "-e\n#{k}=#{v}" }.join("\n")
 341 RUBY
 342
 343     tmp_input_file=$(mktemp)
 344
 345     echo "$input" > "$tmp_input_file"
 346     raw=`exec cat "$tmp_input_file" | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e "$env_ruby"`
 347
 348     rm -f "$tmp_input_file"
 349
 350     env=()
 351     ok=1
 352     while read i; do
 353       if [ "$i" == "*ERROR." ]; then
 354         ok=0
 355       elif [ -n "$i" ]; then
 356         env[${#env[@]}]=$i
 357       fi
 358     done <<< "$raw"
 359
 360     if [ "$ok" -ne 1 ]; then
 361       echo "${env[@]}"
 362       echo "YAML syntax error. Please check your containers/*.yml config files."
 363       exit 1
 364     fi
 365
 366     read -r -d '' labels_ruby << 'RUBY'
 367     require 'yaml'
 368
 369     input=STDIN.readlines.join
 370     # default to UTF-8 for the dbs sake
 371     labels = {}
 372     input.split('_FILE_SEPERATOR_').each do |yml|
 373        yml.strip!
 374        begin
 375          labels.merge!(YAML.load(yml)['labels'] || {})
 376        rescue Psych::SyntaxError => e
 377         puts e
 378         puts "*ERROR."
 379        rescue => e
 380         puts yml
 381         p e
 382        end
 383     end
 384     puts labels.map{|k,v| "-l\n#{k}=#{v}" }.join("\n")
 385 RUBY
 386
 387     tmp_input_file=$(mktemp)
 388
 389     echo "$input" > "$tmp_input_file"
 390     raw=`exec cat "$tmp_input_file" | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e "$labels_ruby"`
 391
 392     rm -f "$tmp_input_file"
 393
 394     labels=()
 395     ok=1
 396     while read i; do
 397       if [ "$i" == "*ERROR." ]; then
 398         ok=0
 399       elif [ -n "$i" ]; then
 400         labels[${#labels[@]}]=$(echo $i | sed s/{{config}}/${config}/g)
 401       fi
 402     done <<< "$raw"
 403
 404     if [ "$ok" -ne 1 ]; then
 405       echo "${labels[@]}"
 406       echo "YAML syntax error. Please check your containers/*.yml config files."
 407       exit 1
 408     fi
 409 }
 410
 411 if [ -z $docker_path ]; then
 412   install_docker
 413 fi
 414
 415 [ "$command" == "cleanup" ] && {
 416   echo
 417   echo "The following command will"
 418   echo "- Delete all docker images for old containers"
 419   echo "- Delete all stopped and orphan containers"
 420   echo
 421   read -p "Are you sure (Y/n): " -n 1 -r && echo
 422   if [[ $REPLY =~ ^[Yy]$ || ! $REPLY ]]
 423     then
 424       space=$(df /var/lib/docker | awk '{ print $4 }' | grep -v Available)
 425       echo "Starting Cleanup (bytes free $space)"
 426
 427       STATE_DIR=./.gc-state scripts/docker-gc
 428
 429       rm -f shared/standalone/log/var-log/*.txt
 430
 431       space=$(df /var/lib/docker | awk '{ print $4 }' | grep -v Available)
 432       echo "Finished Cleanup (bytes free $space)"
 433
 434     else
 435       exit 1
 436   fi
 437
 438   if [ -d /var/discourse/shared/standalone/postgres_data_old ]; then
 439     echo
 440     echo "Old PostgreSQL backup data cluster detected taking up $(du -hs /var/discourse/shared/standalone/postgres_data_old | awk '{print $1}') detected"
 441     read -p "Would you like to remove it? (Y/n): " -n 1 -r && echo
 442
 443     if [[ $REPLY =~ ^[Yy]$ ]]; then
 444       echo "removing old PostgreSQL data cluster at /var/discourse/shared/standalone/postgres_data_old..."
 445       rm -rf /var/discourse/shared/standalone/postgres_data_old
 446     else
 447       exit 1
 448     fi
 449   fi
 450
 451   exit 0
 452 }
 453
 454 if [ ! "$command" == "setup" ]; then
 455   if [[ ! -e $config_file ]]; then
 456     echo "Config file was not found, ensure $config_file exists"
 457     echo
 458     echo "Available configs ( `cd containers && ls -dm *.yml | tr -s '\n' ' ' | awk '{ gsub(/\.yml/, ""); print }'`)"
 459     exit 1
 460   fi
 461 fi
 462
 463 docker_version=($($docker_path --version))
 464 docker_version=${test[2]//,/}
 465 restart_policy=${restart_policy:---restart=always}
 466
 467 set_existing_container(){
 468   existing=`$docker_path ps -a | awk '{ print $1, $(NF) }' | grep " $config$" | awk '{ print $1 }'`
 469 }
 470
 471 run_stop() {
 472
 473   set_existing_container
 474
 475   if [ ! -z $existing ]
 476      then
 477        (
 478         set -x
 479         $docker_path stop -t 10 $config
 480        )
 481      else
 482        echo "$config was not started !"
 483        exit 1
 484   fi
 485 }
 486
 487 set_run_image() {
 488   run_image=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
 489     "require 'yaml'; puts YAML.load(STDIN.readlines.join)['run_image']"`
 490
 491   if [ -n "$user_run_image" ]; then
 492     run_image=$user_run_image
 493   elif [ -z "$run_image" ]; then
 494     run_image="$local_discourse/$config"
 495   fi
 496 }
 497
 498 set_boot_command() {
 499   boot_command=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
 500     "require 'yaml'; puts YAML.load(STDIN.readlines.join)['boot_command']"`
 501
 502   if [ -z "$boot_command" ]; then
 503
 504     no_boot_command=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
 505       "require 'yaml'; puts YAML.load(STDIN.readlines.join)['no_boot_command']"`
 506
 507     if [ -z "$no_boot_command" ]; then
 508       boot_command="/sbin/boot"
 509     fi
 510   fi
 511 }
 512
 513 run_start() {
 514
 515    existing=`$docker_path ps | awk '{ print $1, $(NF) }' | grep " $config$" | awk '{ print $1 }'`
 516    echo $existing
 517    if [ ! -z $existing ]
 518    then
 519      echo "Nothing to do, your container has already started!"
 520      exit 0
 521    fi
 522
 523    existing=`$docker_path ps -a | awk '{ print $1, $(NF) }' | grep " $config$" | awk '{ print $1 }'`
 524    if [ ! -z $existing ]
 525    then
 526      echo "starting up existing container"
 527      (
 528        set -x
 529        $docker_path start $config
 530      )
 531      exit 0
 532    fi
 533
 534    host_run
 535
 536    ports=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e \
 537          "require 'yaml'; puts YAML.load(STDIN.readlines.join)['expose'].map{|p| \"-p #{p}\"}.join(' ')"`
 538
 539    docker_args=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e \
 540           "require 'yaml'; puts YAML.load(STDIN.readlines.join)['docker_args']"`
 541
 542    set_template_info
 543    set_volumes
 544    set_links
 545    set_run_image
 546    set_boot_command
 547
 548    # get hostname and settings from container configuration
 549    for envar in "${env[@]}"
 550    do
 551      if [[ $envar == DOCKER_USE_HOSTNAME* ]] || [[ $envar == DISCOURSE_HOSTNAME* ]]
 552      then
 553        # use as environment variable
 554        eval $envar
 555      fi
 556    done
 557
 558    (
 559      hostname=`hostname -s`
 560      # overwrite hostname
 561      if [ "$DOCKER_USE_HOSTNAME" = "true" ]
 562      then
 563        hostname=$DISCOURSE_HOSTNAME
 564      else
 565        hostname=$hostname-$config
 566      fi
 567
 568      # we got to normalize so we only have allowed strings, this is more comprehensive but lets see how bash does first
 569      # hostname=`$docker_path run $user_args --rm $image ruby -e 'print ARGV[0].gsub(/[^a-zA-Z-]/, "-")' $hostname`
 570      # docker added more hostname rules
 571      hostname=${hostname//_/-}
 572
 573
 574      if [ -z "$SKIP_MAC_ADDRESS" ] ; then
 575       mac_address="--mac-address $($docker_path run $user_args -i --rm -a stdout -a stderr $image /bin/sh -c "echo $hostname | md5sum | sed 's/^\(..\)\(..\)\(..\)\(..\)\(..\).*$/02:\1:\2:\3:\4:\5/'")"
 576      fi
 577
 578      set -x
 579      $docker_path run --shm-size=512m $links $attach_on_run $restart_policy "${env[@]}" "${labels[@]}" -h "$hostname" \
 580         -e DOCKER_HOST_IP="$docker_ip" --name $config -t $ports $volumes $mac_address $docker_args $user_args \
 581         $run_image $boot_command
 582
 583    )
 584    exit 0
 585
 586 }
 587
 588 run_run() {
 589   set_template_info
 590   set_volumes
 591   set_links
 592   set_run_image
 593
 594   unset ERR
 595   (exec $docker_path run --rm --shm-size=512m $user_args $links "${env[@]}" -e DOCKER_HOST_IP="$docker_ip" -i -a stdin -a stdout -a stderr $volumes $run_image \
 596     /bin/bash -c "$run_command") || ERR=$?
 597
 598   if [[ $ERR > 0 ]]; then
 599     exit 1
 600   fi
 601 }
 602
 603 run_bootstrap() {
 604   host_run
 605
 606   # Is the image available?
 607   # If not, pull it here so the user is aware what's happening.
 608   $docker_path history $image >/dev/null 2>&1 || $docker_path pull $image
 609
 610   set_template_info
 611
 612   base_image=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
 613     "require 'yaml'; puts YAML.load(STDIN.readlines.join)['base_image']"`
 614
 615   update_pups=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
 616     "require 'yaml'; puts YAML.load(STDIN.readlines.join)['update_pups']"`
 617
 618   if [[ ! X"" = X"$base_image" ]]; then
 619     image=$base_image
 620   fi
 621
 622   set_volumes
 623   set_links
 624
 625   rm -f $cidbootstrap
 626
 627   run_command="cd /pups &&"
 628   if [[ ! "false" =  $update_pups ]]; then
 629     run_command="$run_command git pull &&"
 630   fi
 631   run_command="$run_command /pups/bin/pups --stdin"
 632
 633   echo $run_command
 634
 635   unset ERR
 636
 637   tmp_input_file=$(mktemp)
 638
 639   echo "$input" > "$tmp_input_file"
 640   (exec cat "$tmp_input_file" | $docker_path run --shm-size=512m $user_args $links "${env[@]}" -e DOCKER_HOST_IP="$docker_ip" --cidfile $cidbootstrap -i -a stdin -a stdout -a stderr $volumes $image \
 641     /bin/bash -c "$run_command") || ERR=$?
 642
 643   rm -f "$tmp_input_file"
 644
 645   unset FAILED
 646   # magic exit code that indicates a retry
 647   if [[ "$ERR" == 77 ]]; then
 648     $docker_path rm `cat $cidbootstrap`
 649     rm $cidbootstrap
 650     exit 77
 651   elif [[ "$ERR" > 0 ]]; then
 652     FAILED=TRUE
 653   fi
 654
 655   if [[ $FAILED = "TRUE" ]]; then
 656     if [[ ! -z "$DEBUG" ]]; then
 657       $docker_path commit `cat $cidbootstrap` $local_discourse/$config-debug || echo 'FAILED TO COMMIT'
 658       echo "** DEBUG ** Maintaining image for diagnostics $local_discourse/$config-debug"
 659     fi
 660
 661     $docker_path rm `cat $cidbootstrap`
 662     rm $cidbootstrap
 663     echo "** FAILED TO BOOTSTRAP ** please scroll up and look for earlier error messages, there may be more than one"
 664     exit 1
 665   fi
 666
 667   sleep 5
 668
 669   $docker_path commit `cat $cidbootstrap` $local_discourse/$config || echo 'FAILED TO COMMIT'
 670   $docker_path rm `cat $cidbootstrap` && rm $cidbootstrap
 671 }
 672
 673 case "$command" in
 674   bootstrap)
 675       run_bootstrap
 676       echo "Successfully bootstrapped, to startup use ./launcher start $config"
 677       exit 0
 678       ;;
 679
 680   run)
 681       run_run
 682       exit 0
 683       ;;
 684
 685   enter)
 686       exec $docker_path exec -it $config /bin/bash --login
 687       ;;
 688
 689   stop)
 690       run_stop
 691       exit 0
 692       ;;
 693
 694   logs)
 695
 696       $docker_path logs $config
 697       exit 0
 698       ;;
 699
 700   restart)
 701       run_stop
 702       run_start
 703       exit 0
 704       ;;
 705
 706   start)
 707       run_start
 708       exit 0
 709       ;;
 710
 711   rebuild)
 712       if [ "$(git symbolic-ref --short HEAD)" == "master" ]; then
 713         echo "Ensuring launcher is up to date"
 714
 715         git remote update
 716
 717         LOCAL=$(git rev-parse @)
 718         REMOTE=$(git rev-parse @{u})
 719         BASE=$(git merge-base @ @{u})
 720
 721         if [ $LOCAL = $REMOTE ]; then
 722           echo "Launcher is up-to-date"
 723
 724         elif [ $LOCAL = $BASE ]; then
 725           echo "Updating Launcher"
 726           git pull || (echo 'failed to update' && exit 1)
 727
 728           for (( i=${#BASH_ARGV[@]}-1,j=0; i>=0,j<${#BASH_ARGV[@]}; i--,j++ ))
 729           do
 730             args[$j]=${BASH_ARGV[$i]}
 731           done
 732           exec /bin/bash $0 "${args[@]}" # $@ is empty, because of shift at the beginning. Use BASH_ARGV instead.
 733
 734         elif [ $REMOTE = $BASE ]; then
 735           echo "Your version of Launcher is ahead of origin"
 736
 737         else
 738           echo "Launcher has diverged source, this is only expected in Dev mode"
 739         fi
 740
 741       fi
 742
 743       set_existing_container
 744
 745       if [ ! -z $existing ]
 746         then
 747           echo "Stopping old container"
 748           (
 749             set -x
 750             $docker_path stop -t 10 $config
 751           )
 752       fi
 753
 754       run_bootstrap
 755
 756       if [ ! -z $existing ]
 757         then
 758           echo "Removing old container"
 759           (
 760             set -x
 761             $docker_path rm $config
 762           )
 763       fi
 764
 765       run_start
 766       exit 0
 767       ;;
 768
 769
 770   destroy)
 771       (set -x; $docker_path stop -t 10 $config && $docker_path rm $config) || (echo "$config was not found" && exit 0)
 772       exit 0
 773       ;;
 774 esac
 775
 776 usage