FWD » Core Development » Conversion Tools

#!/bin/bash

#set -x

function usage()

{

   i=0;       usage[$i]="Usage: $0 [-d] [--jdk8] [-c <cmd_line>] [-f [tag]]"

   i=$((i+1));usage[$i]="\nCreate a container from the base_ubuntu_22.04 or fwd_4.0_ubuntu_22.04 Docker image"

   i=$((i+1));usage[$i]="\nWhere:"

   i=$((i+1));usage[$i]="\t-d = dryrun (just display commands)"

   i=$((i+1));usage[$i]="\t--jdk8 = Include JDK8 in the container. The default is JDK17."

   i=$((i+1));usage[$i]="\t-c <cmd_line> = Pass a command line to the Docker container."

   i=$((i+1));usage[$i]="\t-f [tag] = Include FWD in the container. Specify a tag, if desired. (default=${tag}). *MUST be last parameter*"

   i=$((i+1));usage[$i]="\n -? or -h or --help = show usage."

   for i in "${usage[@]}"; do

      echo -e $i

   done

}

# Function to determine the next available container name,

# if the given container is already running

get_container()

{

   local base_name=$1

   local max=$2

   local candidate_name="$base_name"

   local cid

   for ((i = 0; i < max; i++)); do

      # Only bump the name if there is a running container of the initial name

      if [ $i -gt 0 ]; then

         candidate_name="${base_name}${i}"

      fi

      cid=$(docker ps -q -f status=running -f name=^/${candidate_name}$)

      if [ -z "$cid" ]; then

         echo "$candidate_name"

         return

      fi

   done

   echo "0"

}

# This has limited potential. It has 2 limits:

# 1) We can only have 1 argument with options

# 2) It must be at the end of the list of arguments

# Other than that, it works great.

getopts_get_optional_argument()

{

  next_token="${!OPTIND}"

  #${parameter:offset:length}

  if [[ "${next_token:0:1}" = "-" ]]; then

     next_token=${next_token:2}

  fi

  if [[ -n $next_token && $next_token != -* ]]; then

    OPTIND=$((OPTIND + 1))

    OPTARG=$next_token

  else

    unset OPTARG

  fi

}

# Defaults

jdk_version="jdk17"

docker_image="goldencode/base_ubuntu_22.04"

tag="latest"

while getopts ":h?dc:-:f" opt; do

   case $opt in

      d  ) mycmd="echo"

           ;;

      c  ) cmd_line="${OPTARG}"

           ;;

      -  ) case ${OPTARG} in

             "jdk8" ) jdk_version="jdk8" ;;

             "help" ) usage

                      exit 1 ;;

              * ) echo "Unknown option: --${OPTARG}"

                  usage

                  exit 1 ;;

           esac

           ;;

      f  ) getopts_get_optional_argument "$@"

           [ ! -z "${OPTARG}" ] && tag="${OPTARG}"

           docker_image="goldencode/fwd_4.0_ubuntu_22.04"

           fwd="_fwd"

           ;;

      h | \? ) if [[ "$OPTARG" == "?" || "$opt" == "h" ]]; then

                  usage

                  exit 1

               else

                  echo "Unknown option: -${OPTARG}"

                  usage

                  exit 1

               fi

               ;;

   esac

done

shift $(($OPTIND - 1))

max_containers=10  # Maximum builds we allow concurrently

container_name="${jdk_version}${fwd}_container_${tag}"

[ "$jdk_version" != "jdk8" ] && docker_image+="_${jdk_version}"

check_container_name=$(get_container $container_name $max_containers)

if [ "$check_container_name" == "0" ]; then

   echo "ERROR: Too many ${container_name} containers (max=${max_containers}) running. "

   exit

else

   container_name=$check_container_name

fi

if [ -z "$cmd_line" ]; then

   cmd_line="bash"

else

   cmd_line="sh -c \"${cmd_line}\""

fi

volumes="-v ${HOME}:/home/${USER} -v /etc/passwd:/etc/passwd:ro -v /etc/group:/etc/group:ro"

dcmd="$mycmd docker run --name $container_name -h $container_name --rm -it $volumes --pull always -u $(id -u):$(id -g) -e HOME=${HOME} -e USER=${USER} -w $(pwd) ${docker_image}:${tag} $cmd_line"

echo "Running: $dcmd"

eval $dcmd