#!/bin/bash

# Copyright 2017 Google Inc. All rights reserved.

#

# 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.

# Build script to build the Go runtime builder image.

# Required arguments:

# project - GCP project ID for image name.

# go_version - Go SDK version to bundle into image.

set -e

usage() { echo "Usage: $0 <project> <go_version>"; exit 1; }

base_digest()

{

# The following PR changed the base image from Docker V2 format to OCI format, which no longer works in

# Flex deployments. So, the current solution is to pin to a gcr.io/distroless/base digest in Docker V2 format.

# https://github.com/GoogleContainerTools/distroless/pull/1256

export BASE_DIGEST="sha256:c88e34ed6523503e4f63c62a3384e2c3492c71d8cf4cc9f4bbee2b0349c6ee9a"

}

if [[ "$#" -ne 2 ]]; then

usage

fi

export PROJECT_ID="$1"

export GO_VERSION="$2"

if [ -n "${TAG}" ]; then

export BUILD_TAG="${TAG}"

else

export BUILD_TAG="${GO_VERSION}"-$(date +%Y%m%d_%H%M)

fi

base_digest

echo "Building builder image with PROJECT_ID=${PROJECT_ID}, BUILD_TAG=${BUILD_TAG}, BASE_DIGEST=${BASE_DIGEST}"

gcloud builds submit \

--project="${PROJECT_ID}" \

--substitutions "_PROJECT_ID=${PROJECT_ID},_GO_VERSION=${GO_VERSION},_BUILD_TAG=${BUILD_TAG},_BASE_DIGEST=${BASE_DIGEST}" \

--config=cloudbuild.yaml .

# Tagging the builder with 'staging' for integration test.

gcloud container images add-tag -q "gcr.io/${PROJECT_ID}/go1-builder:${BUILD_TAG}" "gcr.io/${PROJECT_ID}/go1-builder:staging"