obtainImageVersions.sh :: get server + registry images from an OCP 4.x CRW 2.x deployment and compare those digests to the latest in Quay

obtainImageVersions.sh

#!/bin/bash

NAMESPACE=$1

function obtainPodName(){
    local podPartialName=$1

    echo "$(oc get pods -n $NAMESPACE | grep $podPartialName | awk '{print $1;}' | awk 'NR==1{print $1}')"
}

function obtainImageVersion(){
    local podName=$1

    echo "$(oc get pod $podName -o json -n $NAMESPACE | jq  .status.containerStatuses[].imageID)"
}


SERVER_POD_NAME=$(obtainPodName codeready)
DEVFILE_REGISTRY_POD_NAME=$(obtainPodName devfile-registry)
PLUGIN_REGISTRY_POD_NAME=$(obtainPodName plugin-registry)


SERVER_IMAGE=$(obtainImageVersion $SERVER_POD_NAME | tr -d "\"")
DEVFILE_REGISTRY_IMAGE=$(obtainImageVersion $DEVFILE_REGISTRY_POD_NAME | tr -d "\"")
PLUGIN_REGISTRY_IMAGE=$(obtainImageVersion $PLUGIN_REGISTRY_POD_NAME | tr -d "\"")

echo ""
echo "############ Deployed images in $NAMESPACE"
#echo ""
#echo "Server"
echo "    $SERVER_IMAGE"
#echo ""
#echo "Devfile registry"
echo "    $DEVFILE_REGISTRY_IMAGE"
#echo ""
#echo "Plugin registry"
echo "    $PLUGIN_REGISTRY_IMAGE"
echo "############"
echo ""

getDigest () {
    image=$1
    tag=$2
    skopeo inspect docker://${image}:${tag} | jq -r '.Digest' | sed -r -e "s#sha256#${image}@sha256#"
}

diffDigests () {
    deployedImage=$1
    quayImage=$2
    deployedImageDigest=${deployedImage##*sha256}
    quayImageDigest=${quayImage##*sha256}
    # echo "deployedImageDigest=$deployedImageDigest"
    # echo "quayImageDigest=$quayImageDigest"
    if [[ "$deployedImageDigest" != "$quayImageDigest" ]]; then
        echo ":: Digests are different!"
    else
        echo ":: Digests match!"
    fi
}


echo "############ quay.io/crw :latest images"
#echo ""
#echo "Server"
SERVER_IMAGE_QUAY=$(getDigest quay.io/crw/server-rhel8 latest)
echo -n "    https://${SERVER_IMAGE_QUAY/@/ @} "
diffDigests $SERVER_IMAGE $SERVER_IMAGE_QUAY
#echo ""
#echo "Devfile registry"
DEVFILE_REGISTRY_IMAGE_QUAY=$(getDigest quay.io/crw/devfileregistry-rhel8 latest)
echo -n "    https://${DEVFILE_REGISTRY_IMAGE_QUAY/@/ @} "
diffDigests $DEVFILE_REGISTRY_IMAGE $DEVFILE_REGISTRY_IMAGE_QUAY
#echo ""
#echo "Plugin registry"
PLUGIN_REGISTRY_IMAGE_QUAY=$(getDigest quay.io/crw/pluginregistry-rhel8 latest)
echo -n "    https://${PLUGIN_REGISTRY_IMAGE_QUAY/@/ @} "
diffDigests $PLUGIN_REGISTRY_IMAGE $PLUGIN_REGISTRY_IMAGE_QUAY
#echo ""
echo "############"