azk8spull.sh

#!/usr/bin/env bash
function azk8spull()
{
	image=$1
	if [ -z $image ]; then
		echo "## azk8spull image name cannot be null."
	else
		array=(`echo $image | tr '/' ' '` )

		domainName=""
		repoName=""
		imageName=""

		if [ ${#array[*]} -eq 3 ]; then
			repoName=${array[1]}
			imageName=${array[2]}
			if [ "${array[0]}"x = "docker.io"x ]; then
				domainName="dockerhub.azk8s.cn"
			elif [ "${array[0]}"x = "gcr.io"x ]; then
				domainName="gcr.azk8s.cn"
			elif [ "${array[0]}"x = "quay.io"x ]; then
				domainName="quay.azk8s.cn"
			else
				echo '## azk8spull can not support pulling $image right now.'
			fi
		elif [ ${#array[*]} -eq 2 ]; then
			if [ "${array[0]}"x = "k8s.gcr.io"x ]; then
				domainName="gcr.azk8s.cn"
				repoName="google_containers"
				imageName=${array[1]}
			else
				domainName="dockerhub.azk8s.cn"
				repoName=${array[0]}
				imageName=${array[1]}
			fi
		elif [ ${#array[*]} -eq 1 ]; then
				domainName="dockerhub.azk8s.cn"
				repoName="library"
				imageName=${array[0]}
		else
			echo '## azk8spull can not support pulling $image right now.'
		fi
		if [ $domainName != "" ]; then
			echo "## azk8spull try to pull image from mirror $domainName/$repoName/$imageName."
			docker pull  $domainName/$repoName/$imageName
			if [ $? -eq 0 ]; then
				echo "## azk8spull try to tag $domainName/$repoName/$imageName to $image."
				docker tag $domainName/$repoName/$imageName $image
				if [ $? -eq 0 ]; then
					echo '## azk8spull finish pulling. '
				fi
			fi
		fi
	fi
}