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) OVERRIDEYAML=$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 $OVERRIDEYAML ]; then
   echo "Deploy recipe is missing. Please use -f to specify the recipe path."
   exit 1
fi

if [ -z $IMAGE_DIRECTORY_PATH ]; then
    IMAGE_DIRECTORY_PATH=/tmp/ric_image
    rm -rf $IMAGE_DIRECTORY_PATH
    mkdir -p $IMAGE_DIRECTORY_PATH
fi


ROOT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"
TEMP_DIR=/tmp
rm -rf $TEMP_DIR/imagelist
touch $TEMP_DIR/imagelist
CHART_ARRAY=()
while IFS= read -r -d $'\0'; do
    CHART_ARRAY+=("$REPLY")
done < <(find $ROOT_DIR/../ -name Chart.yaml -printf '%h\0')

rm -fr $TEMP_DIR/ric-common*.tgz

helm package -d $TEMP_DIR $ROOT_DIR/../ric-common/Common-Template/helm/ric-common
echo "***************************************"



for dir in "${CHART_ARRAY[@]}"
do
  
    #rm -rf $dir/charts
    rm -rf $dir/tmpcharts
    echo "Analyzing Chart $(echo $dir | awk '{n=split($0, a, "/"); print a[n]}')"    
    echo $dir 
    mkdir -p $dir/charts
    cp $TEMP_DIR/ric-common*.tgz $dir/charts/

    helm dep up $dir > /dev/null 2>&1
    
    
    if [ -z $OVERRIDEYAML ]; then
        IMAGE_ARRAY=$(helm template $dir | grep "image:" | awk '{ gsub(/.*image: /, "", $0); gsub(/"/, "", $0); print $0}')
    else
        IMAGE_ARRAY=$(helm template -f $OVERRIDEYAML $dir | grep "image:" | awk '{ gsub(/.*image: /, "", $0); gsub(/"/, "", $0); print $0}' )
    fi

    for f in $IMAGE_ARRAY; do
	if [ ! -z $f ]; then
	    FOUND=$(grep $f $TEMP_DIR/imagelist)
	    if [ -z $FOUND ]; then
		echo "Found unique docker image $f."
                echo $f >> $TEMP_DIR/imagelist
	    fi
	fi
    done

    echo "***************************************"
done


while IFS= read -r image
do
    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 < "$TEMP_DIR/imagelist"