bin/prepull-images

#!/bin/bash
##############################################################################
#
#   Copyright (c) 2019 AT&T Intellectual Property.
#
#   Licensed under the Apache License, Version 2.0 (the "License");
#   you may not use this file except in compliance with the License.
#   You may obtain a copy of the License at
#
#       http://www.apache.org/licenses/LICENSE-2.0
#
#   Unless required by applicable law or agreed to in writing, software
#   distributed under the License is distributed on an "AS IS" BASIS,
#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#   See the License for the specific language governing permissions and
#   limitations under the License.
#
##############################################################################

# Installs well-known RIC charts then verifies specified helm chart
# Requires chart tgz archives in /tmp


while [ -n "$1" ]; do # while loop starts

    case "$1" in

    -f) IMAGELISTFILE=$2
        shift
        ;; 


    -d) IMAGE_DIRECTORY_PATH=$2
        shift
        ;;


    *) echo "Option $1 not recognized. Please use -f to specify the recipe path." ;; # In case you typed a different option other than a,b,c

    esac

    shift

done

if [ -z "$IMAGELISTFILE" ]; then
   echo "Image list file is missing. Please use -f to specify the path."
   exit 1
fi

if [ -z "$IMAGE_DIRECTORY_PATH" ]; then
    IMAGE_DIRECTORY_PATH=/tmp/ric_image
fi


rm -rf $IMAGE_DIRECTORY_PATH
mkdir -p $IMAGE_DIRECTORY_PATH


while IFS= read -r image
do
    if [[ $image == "#"* ]]; then
        # supporting comment lines
        continue
    fi

    IMAGENAME=$(echo $image | awk '{ n=split($0, a, "/"); print a[n] }')

    echo "Pulling image $image"
    RESULT=$(docker pull $image |& grep "no basic auth credentials" )
    if [ ! -z "$RESULT" ]; then
        echo "You are not logined to docker registry. Please login by running \"docker login DOCKER_REGISTRY\""
	exit 1
    fi

    echo "Saving image $image"
    docker save $image -o $IMAGE_DIRECTORY_PATH/$IMAGENAME

    echo "************************************************************"


done < "$IMAGELISTFILE"


echo "RIC Images are downloaded to: $IMAGE_DIRECTORY_PATH"