Reliable way to determine the gcloud_build_image image name

[DazWilkin]

Is there a reliable way to determine the image name generated by gcloud_build_image?

I'd been using:

IMAGE=gcr.io/${PROJECT}/endpoints-runtime-serverless:${ESP_HOST}-${CONFIG}

But this has recently revised to include the ESP version:

IMAGE=gcr.io/${PROJECT}/endpoints-runtime-serverless:${ESP_VERS}-${ESP_HOST}-${CONFIG}

And I'm currently manually updating the ESP_VERS in my script :-(

gcloud services enable ${ESP_HOST} \
--project=${PROJECT}

# Build an ESPv2 proxy
wget https://raw.githubusercontent.com/GoogleCloudPlatform/esp-v2/master/docker/serverless/gcloud_build_image
chmod +x ./gcloud_build_image

CONFIG="$(\
  gcloud endpoints configs list \
  --service=${ESP_HOST} \
  --project=${PROJECT} \
  --format="json" \
  | jq -r .[0].id)"
./gcloud_build_image \
-s ${ESP_HOST} \
-c ${CONFIG} \
-p ${PROJECT}

# Deploy the ESPv2 proxy in place of the placeholder
ESP_VERS="2.28.0"
IMAGE=gcr.io/${PROJECT}/endpoints-runtime-serverless:${ESP_VERS}-${ESP_HOST}-${CONFIG}

gcloud run deploy ${ESP_NAME} \
--image=${IMAGE} \
--no-allow-unauthenticated \
--platform=managed \
--region=${REGION} \
--project=${PROJECT}

[nareddyt]

The name change was almost a year ago in #229. We plan to keep the name as gcr.io/${PROJECT}/endpoints-runtime-serverless:${ESP_VERS}-${ESP_HOST}-${CONFIG} for the foreseeable future :)

This format is also documented in our tutorials: https://cloud.google.com/endpoints/docs/openapi/get-started-cloud-run#configure_esp

[nareddyt]

I see, your question is about how to automatically determine the image name in your scripts. You can copy this code snippet into your scripts to get the latest ESPv2 version:

esp-v2/docker/serverless/gcloud_build_image

Lines 59 to 79 in 59b1617

	if [ -z "${ESP_FULL_VERSION}" ]; then
	echo "Determining fully-qualified ESP version for tag: ${ESP_TAG}"
	ALL_TAGS=$(gcloud container images list-tags "${BASE_IMAGE_NAME}" \
	--filter="tags~^${ESP_TAG}$" \
	--format="value(tags)")
	IFS=',' read -ra TAGS_ARRAY <<< "${ALL_TAGS}"
	if [ ${#TAGS_ARRAY[@]} -eq 0 ]; then
	error_exit "Did not find ESP version: ${ESP_TAG}"
	fi;
	# Find the tag with the longest length.
	ESP_FULL_VERSION=""
	for tag in "${TAGS_ARRAY[@]}"; do
	if [ ${#tag} -gt ${#ESP_FULL_VERSION} ]; then
	ESP_FULL_VERSION=${tag}
	fi
	done
	fi
	echo "Building image for ESP version: ${ESP_FULL_VERSION}"

[DazWilkin]

Perfect! Thank you.