update clean registry

Signed-off-by: Jess Frazelle <acidburn@github.com>

clean-registry/clean-registry

@@ -32,6 +32,7 @@ for repo in "${repos[@]}"; do
 		# get the latest index for the tag
 		current=$(gsutil cat "${BUCKET_PREFIX}/repositories/${repo}/_manifests/tags/${tag}/current/link" || true)
 		if [[ "$current" == "true" ]]; then
+			# continue the loop since we cannot cat
 			continue
 		fi
 		# split on : since the link comes back as:
@@ -39,6 +40,23 @@ for repo in "${repos[@]}"; do
 		ha=${current%:*}
 		id=${current#*:}
 
+		# get the manifest
+		manifest=$(gsutil cat "${BUCKET_PREFIX}/blobs/sha256/${id:0:2}/${id}/data" || true)
+		if [[ "$manifest" == "true" ]]; then
+			# continue the loop since we cannot cat
+			continue
+		fi
+		manifest_media_type=$(echo ${manifest} | jq -r '.mediaType')
+		echo "media-type: $manifest_media_type"
+
+
+		if [ "${manifest_media_type}" == "application/vnd.docker.distribution.manifest.list.v2+json" ] ; then
+			# we have a manifest list and fetch the referenced manifests
+			additional_manifests=( $(echo ${manifest} | jq -r '.["manifests"] | .[].digest' | cut -d: -f2) )
+
+			echo "additional_manifests: ${additional_manifests[@]}"
+		fi
+
 		echo "repo: $repo | tag: $tag | current: ${ha}:${id}"
 
 		# get the shas
@@ -49,7 +67,8 @@ for repo in "${repos[@]}"; do
 
 		# shellcheck disable=SC2199
 		if [[ "${shas[@]}" != "" ]] && [[ ! -z "${shas[@]}" ]]; then
-			parallel -j"${JOBS}" reg rm "${REPO_URL}/${repo}@${ha}:{1}" ::: "${shas[@]}" || true
+			echo "[to be removed]: ${shas[@]}"
+			#parallel -j"${JOBS}" reg rm "${REPO_URL}/${repo}@${ha}:{1}" ::: "${shas[@]}" || true
 		fi
 	done
 done