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 $config ]]; then
  59   usage
  60   exit 1
  61 fi
  62
  63 # Docker doesn't like uppercase characters, spaces or special characters, catch it now before we build everything out and then find out
  64 re='[[:upper:]/ !@#$%^&*()+~`=]'
  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 [ -z "$command" -a -z "$config" ]; then
 455   usage
 456 fi
 457
 458 if [ ! "$command" == "setup" ]; then
 459   if [[ ! -e $config_file ]]; then
 460     echo "Config file was not found, ensure $config_file exists"
 461     echo
 462     echo "Available configs ( `cd containers && ls -dm *.yml | tr -s '\n' ' ' | awk '{ gsub(/\.yml/, ""); print }'`)"
 463     exit 1
 464   fi
 465 fi
 466
 467 docker_version=($($docker_path --version))
 468 docker_version=${test[2]//,/}
 469 restart_policy=${restart_policy:---restart=always}
 470
 471 set_existing_container(){
 472   existing=`$docker_path ps -a | awk '{ print $1, $(NF) }' | grep " $config$" | awk '{ print $1 }'`
 473 }
 474
 475 run_stop() {
 476
 477   set_existing_container
 478
 479   if [ ! -z $existing ]
 480      then
 481        (
 482         set -x
 483         $docker_path stop -t 10 $config
 484        )
 485      else
 486        echo "$config was not started !"
 487        exit 1
 488   fi
 489 }
 490
 491 set_run_image() {
 492   run_image=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
 493     "require 'yaml'; puts YAML.load(STDIN.readlines.join)['run_image']"`
 494
 495   if [ -n "$user_run_image" ]; then
 496     run_image=$user_run_image
 497   elif [ -z "$run_image" ]; then
 498     run_image="$local_discourse/$config"
 499   fi
 500 }
 501
 502 set_boot_command() {
 503   boot_command=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
 504     "require 'yaml'; puts YAML.load(STDIN.readlines.join)['boot_command']"`
 505
 506   if [ -z "$boot_command" ]; then
 507
 508     no_boot_command=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
 509       "require 'yaml'; puts YAML.load(STDIN.readlines.join)['no_boot_command']"`
 510
 511     if [ -z "$no_boot_command" ]; then
 512       boot_command="/sbin/boot"
 513     fi
 514   fi
 515 }
 516
 517 run_start() {
 518
 519    existing=`$docker_path ps | awk '{ print $1, $(NF) }' | grep " $config$" | awk '{ print $1 }'`
 520    echo $existing
 521    if [ ! -z $existing ]
 522    then
 523      echo "Nothing to do, your container has already started!"
 524      exit 0
 525    fi
 526
 527    existing=`$docker_path ps -a | awk '{ print $1, $(NF) }' | grep " $config$" | awk '{ print $1 }'`
 528    if [ ! -z $existing ]
 529    then
 530      echo "starting up existing container"
 531      (
 532        set -x
 533        $docker_path start $config
 534      )
 535      exit 0
 536    fi
 537
 538    host_run
 539
 540    ports=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e \
 541          "require 'yaml'; puts YAML.load(STDIN.readlines.join)['expose'].map{|p| \"-p #{p}\"}.join(' ')"`
 542
 543    docker_args=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e \
 544           "require 'yaml'; puts YAML.load(STDIN.readlines.join)['docker_args']"`
 545
 546    set_template_info
 547    set_volumes
 548    set_links
 549    set_run_image
 550    set_boot_command
 551
 552    # get hostname and settings from container configuration
 553    for envar in "${env[@]}"
 554    do
 555      if [[ $envar == DOCKER_USE_HOSTNAME* ]] || [[ $envar == DISCOURSE_HOSTNAME* ]]
 556      then
 557        # use as environment variable
 558        eval $envar
 559      fi
 560    done
 561
 562    (
 563      hostname=`hostname -s`
 564      # overwrite hostname
 565      if [ "$DOCKER_USE_HOSTNAME" = "true" ]
 566      then
 567        hostname=$DISCOURSE_HOSTNAME
 568      else
 569        hostname=$hostname-$config
 570      fi
 571
 572      # we got to normalize so we only have allowed strings, this is more comprehensive but lets see how bash does first
 573      # hostname=`$docker_path run $user_args --rm $image ruby -e 'print ARGV[0].gsub(/[^a-zA-Z-]/, "-")' $hostname`
 574      # docker added more hostname rules
 575      hostname=${hostname//_/-}
 576
 577
 578      if [ -z "$SKIP_MAC_ADDRESS" ] ; then
 579       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/'")"
 580      fi
 581
 582      set -x
 583      $docker_path run --shm-size=512m $links $attach_on_run $restart_policy "${env[@]}" "${labels[@]}" -h "$hostname" \
 584         -e DOCKER_HOST_IP="$docker_ip" --name $config -t $ports $volumes $mac_address $docker_args $user_args \
 585         $run_image $boot_command
 586
 587    )
 588    exit 0
 589
 590 }
 591
 592 run_run() {
 593   set_template_info
 594   set_volumes
 595   set_links
 596   set_run_image
 597
 598   unset ERR
 599   (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 $run_image \
 600     /bin/bash -c "$run_command") || ERR=$?
 601
 602   if [[ $ERR > 0 ]]; then
 603     exit 1
 604   fi
 605 }
 606
 607 run_bootstrap() {
 608   host_run
 609
 610   # Is the image available?
 611   # If not, pull it here so the user is aware what's happening.
 612   $docker_path history $image >/dev/null 2>&1 || $docker_path pull $image
 613
 614   set_template_info
 615
 616   base_image=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
 617     "require 'yaml'; puts YAML.load(STDIN.readlines.join)['base_image']"`
 618
 619   update_pups=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
 620     "require 'yaml'; puts YAML.load(STDIN.readlines.join)['update_pups']"`
 621
 622   if [[ ! X"" = X"$base_image" ]]; then
 623     image=$base_image
 624   fi
 625
 626   set_volumes
 627   set_links
 628
 629   rm -f $cidbootstrap
 630
 631   run_command="cd /pups &&"
 632   if [[ ! "false" =  $update_pups ]]; then
 633     run_command="$run_command git pull &&"
 634   fi
 635   run_command="$run_command /pups/bin/pups --stdin"
 636
 637   echo $run_command
 638
 639   unset ERR
 640
 641   tmp_input_file=$(mktemp)
 642
 643   echo "$input" > "$tmp_input_file"
 644   (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 $image \
 645     /bin/bash -c "$run_command") || ERR=$?
 646
 647   rm -f "$tmp_input_file"
 648
 649   unset FAILED
 650   # magic exit code that indicates a retry
 651   if [[ "$ERR" == 77 ]]; then
 652     $docker_path rm `cat $cidbootstrap`
 653     rm $cidbootstrap
 654     exit 77
 655   elif [[ "$ERR" > 0 ]]; then
 656     FAILED=TRUE
 657   fi
 658
 659   if [[ $FAILED = "TRUE" ]]; then
 660     if [[ ! -z "$DEBUG" ]]; then
 661       $docker_path commit `cat $cidbootstrap` $local_discourse/$config-debug || echo 'FAILED TO COMMIT'
 662       echo "** DEBUG ** Maintaining image for diagnostics $local_discourse/$config-debug"
 663     fi
 664
 665     $docker_path rm `cat $cidbootstrap`
 666     rm $cidbootstrap
 667     echo "** FAILED TO BOOTSTRAP ** please scroll up and look for earlier error messages, there may be more than one"
 668     exit 1
 669   fi
 670
 671   sleep 5
 672
 673   $docker_path commit `cat $cidbootstrap` $local_discourse/$config || echo 'FAILED TO COMMIT'
 674   $docker_path rm `cat $cidbootstrap` && rm $cidbootstrap
 675 }
 676
 677
 678
 679 case "$command" in
 680   bootstrap)
 681       run_bootstrap
 682       echo "Successfully bootstrapped, to startup use ./launcher start $config"
 683       exit 0
 684       ;;
 685
 686   run)
 687       run_run
 688       exit 0
 689       ;;
 690
 691   enter)
 692       exec $docker_path exec -it $config /bin/bash --login
 693       ;;
 694
 695   stop)
 696       run_stop
 697       exit 0
 698       ;;
 699
 700   logs)
 701
 702       $docker_path logs $config
 703       exit 0
 704       ;;
 705
 706   restart)
 707       run_stop
 708       run_start
 709       exit 0
 710       ;;
 711
 712   start)
 713       run_start
 714       exit 0
 715       ;;
 716
 717   rebuild)
 718       if [ "$(git symbolic-ref --short HEAD)" == "master" ]; then
 719         echo "Ensuring launcher is up to date"
 720
 721         git remote update
 722
 723         LOCAL=$(git rev-parse @)
 724         REMOTE=$(git rev-parse @{u})
 725         BASE=$(git merge-base @ @{u})
 726
 727         if [ $LOCAL = $REMOTE ]; then
 728           echo "Launcher is up-to-date"
 729
 730         elif [ $LOCAL = $BASE ]; then
 731           echo "Updating Launcher"
 732           git pull || (echo 'failed to update' && exit 1)
 733
 734           for (( i=${#BASH_ARGV[@]}-1,j=0; i>=0,j<${#BASH_ARGV[@]}; i--,j++ ))
 735           do
 736             args[$j]=${BASH_ARGV[$i]}
 737           done
 738           exec /bin/bash $0 "${args[@]}" # $@ is empty, because of shift at the beginning. Use BASH_ARGV instead.
 739
 740         elif [ $REMOTE = $BASE ]; then
 741           echo "Your version of Launcher is ahead of origin"
 742
 743         else
 744           echo "Launcher has diverged source, this is only expected in Dev mode"
 745         fi
 746
 747       fi
 748
 749       set_existing_container
 750
 751       if [ ! -z $existing ]
 752         then
 753           echo "Stopping old container"
 754           (
 755             set -x
 756             $docker_path stop -t 10 $config
 757           )
 758       fi
 759
 760       run_bootstrap
 761
 762       if [ ! -z $existing ]
 763         then
 764           echo "Removing old container"
 765           (
 766             set -x
 767             $docker_path rm $config
 768           )
 769       fi
 770
 771       run_start
 772       exit 0
 773       ;;
 774
 775
 776   destroy)
 777       (set -x; $docker_path stop -t 10 $config && $docker_path rm $config) || (echo "$config was not found" && exit 0)
 778       exit 0
 779       ;;
 780 esac
 781
 782 usage