roles/head-node/files/commands/cord-registry

#!/bin/bash
#D Displays information about Docker images in the CORD POD registry

PROG=$(echo $(basename $0) | sed -e 's/^cord-/cord /g')

usage() {
    echo "usage: $PROG [-r|--registry <registry] <sub-command> [options]"
    echo "    list    display the Docker images in the registry"
    echo "    help    this message"
}

usage_list() {
    echo "usage $PROG list [--json|-j]"
    echo "    json    display output as JSON object"
    echo "    help    this message"
}

REG=docker-registry:5000
while [ $# -gt 0 ]; do
    case $1 in
      -r|--registry)
          shift
          REG=$1
          ;;
      -*)
          echo "Unknown option '$1'"
          usage
          exit 1
          ;;
      *)
          break
          ;;
    esac
    shift
done

COMMAND=$1; shift

case $COMMAND in
    list)
        DO_JSON=0
        while [ $# -gt 0 ]; do
            case $1 in
                json|--json|-j)
                    DO_JSON=1
                    ;;
                help|--help|-h)
                    usage_list
                    exit 0
                    ;;
                *)
                    >&2 echo "Unknown option '$1'"
                    usage_list
                    exit 1
                    ;;
            esac
            shift
        done

        if [ $DO_JSON -eq 1 ]; then
            /bin/echo -n '{"registries":['
            COMMA=
            for i in $(curl -sSL http://$REG/v2/_catalog | jq '.repositories | .[]' | sed -e 's/"//g'); do
                /bin/echo -n "$COMMA{\"registry\":\"${REG}/$i\",\"tags\":["
                C2=
                for t in $(curl -sSL http://$REG/v2/$i/tags/list | jq '.tags | .[]' | sed -e 's/"//g'); do
                    echo -n "${C2}\"$t\""
                    C2=","
                done
                /bin/echo -n "]}"
                COMMA=","
            done
            echo -n "]}"
        else
            OUT=$(mktemp)
            echo "REPOSITORY,TAG" > $OUT
            for i in $(curl -sSL http://$REG/v2/_catalog | jq '.repositories | .[]' | sed -e 's/"//g'); do
                for t in $(curl -sSL http://$REG/v2/$i/tags/list | jq '.tags + [] | .[]' | sed -e 's/"//g'); do
                    /bin/echo -e "${REG}/$i,$t" >> $OUT
                done
            done
            cat $OUT | column -s , -t
            rm -f $OUT
        fi
        ;;
    help)
        usage
        exit 0
        ;;
    *)
        usage
        exit 1
        ;;
esac