From bb9b3163ee170ae15e2b155c3aae7f361c0af3be Mon Sep 17 00:00:00 2001
From: Jeff Regan <jregan@google.com>
Date: Tue, 28 May 2019 17:06:44 -0700
Subject: [PATCH] Add script to run cloud build 'locally'.

---
 build/{build.sh => cloudbuild.sh} |  0
 build/cloudbuild.yaml             | 17 +-------
 build/cloudbuild_local.yaml       | 30 --------------
 build/localbuild.sh               | 67 +++++++++++++++++++++++++++++++
 4 files changed, 68 insertions(+), 46 deletions(-)
 rename build/{build.sh => cloudbuild.sh} (100%)
 delete mode 100644 build/cloudbuild_local.yaml
 create mode 100755 build/localbuild.sh

diff --git a/build/build.sh b/build/cloudbuild.sh
similarity index 100%
rename from build/build.sh
rename to build/cloudbuild.sh
diff --git a/build/cloudbuild.yaml b/build/cloudbuild.yaml
index c843ecadb..d2233d75e 100644
--- a/build/cloudbuild.yaml
+++ b/build/cloudbuild.yaml
@@ -1,23 +1,8 @@
-#  Copyright 2018 The Kubernetes Authors.
-#
-#  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.
-
-# TODO(droot): add instructions for running in production.
 steps:
 - name: "gcr.io/cloud-builders/git"
   args: [fetch, --tags, --depth=100]
 - name: "gcr.io/kustomize-199618/golang_with_goreleaser:1.10-stretch"
-  args: ["bash", "build/build.sh"]
+  args: ["bash", "build/cloudbuild.sh"]
   secretEnv: ['GITHUB_TOKEN']
 secrets:
 - kmsKeyName: projects/kustomize-199618/locations/global/keyRings/github-tokens/cryptoKeys/gh-release-token
diff --git a/build/cloudbuild_local.yaml b/build/cloudbuild_local.yaml
deleted file mode 100644
index f1eb5bb2c..000000000
--- a/build/cloudbuild_local.yaml
+++ /dev/null
@@ -1,30 +0,0 @@
-#  Copyright 2018 The Kubernetes Authors.
-#
-#  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.
-
-# Instructions to run locally:
-# Download google container builder: https://github.com/kubernetes-sigs/container-builder-local
-# Set you GOOS and GOARCH vars to match your system
-# Set OUTPUT to the location to write the directory containing the tar.gz
-# $ container-builder-local --config=build/cloudbuild_local.yaml --dryrun=false \
-#   --substitutions=_GOOS=$GOOS,_GOARCH=$GOARCH --write-workspace=$OUTPUT .
-# Release tar will be in $OUTPUT
-
-steps:
-- name: "gcr.io/kustomize-199618/golang_with_goreleaser:1.10-stretch"
-  args: ["bash", "build/build.sh", "--snapshot"]
-  secretEnv: ['GITHUB_TOKEN']
-secrets:
-- kmsKeyName: projects/kustomize-199618/locations/global/keyRings/github-tokens/cryptoKeys/gh-release-token
-  secretEnv:
-   GITHUB_TOKEN: CiQAyrREbPgXJOeT7M3t+WlxkhXwlMPudixBeiyWTjmLOMLqdK4SUQA0W+xUmDJKAhyfHCcwqSEzUn9OwKC7XAYcmwe0CCKTCbPbDgmioDK24q3LVapndXNvnnHvCjhOJNEr1o+P1DCF+LlzYV2YL8lP09rrKrslPg==
diff --git a/build/localbuild.sh b/build/localbuild.sh
new file mode 100755
index 000000000..c0f7d770b
--- /dev/null
+++ b/build/localbuild.sh
@@ -0,0 +1,67 @@
+#!/bin/bash
+
+# Usage
+#
+#   ./build/localbuild.sh
+#
+# The script attempts to use cloudbuild configuration
+# to create a release "locally".
+#
+# At the time of writing,
+#
+#   https://pantheon.corp.google.com/cloud-build/triggers?project=kustomize-199618
+#
+# has a trigger such that whenever a git tag is
+# applied to the kustomize repo, the cloud builder
+# reads the repository-relative file
+#
+#   build/cloudbuild.yaml
+#  
+# Inside this yaml file is a reference to the script
+#
+#   build/cloudbuild.sh
+#
+# The script you are reading now does something
+# analogous via docker tricks.
+
+set -e
+# set -x
+
+if [ -z ${GOPATH+x} ]; then
+  echo GOPATH is unset; cannot proceed.
+  exit 1
+fi
+
+WORK=$(mktemp -d)
+
+pushd $GOPATH/src/sigs.k8s.io/kustomize
+pwd
+
+echo "Building in $WORK"
+
+cat <<EOF >/tmp/localbuild.yaml
+steps:
+- name: "gcr.io/kustomize-199618/golang_with_goreleaser:1.10-stretch"
+  args: ["bash", "build/cloudbuild.sh", "--snapshot"]
+  secretEnv: ['GITHUB_TOKEN']
+secrets:
+- kmsKeyName: projects/kustomize-199618/locations/global/keyRings/github-tokens/cryptoKeys/gh-release-token
+  secretEnv:
+   GITHUB_TOKEN: CiQAyrREbPgXJOeT7M3t+WlxkhXwlMPudixBeiyWTjmLOMLqdK4SUQA0W+xUmDJKAhyfHCcwqSEzUn9OwKC7XAYcmwe0CCKTCbPbDgmioDK24q3LVapndXNvnnHvCjhOJNEr1o+P1DCF+LlzYV2YL8lP09rrKrslPg==
+EOF
+
+#  --substitutions=_GOOS=linux,_GOARCH=amd64
+
+config=build/cloudbuild.yaml
+config=/tmp/localbuild.yaml
+
+# See https://cloud.google.com/cloud-build/docs/build-debug-locally
+cloud-build-local \
+  --config=$config \
+  --dryrun=false \
+  --write-workspace=$WORK \
+  .
+
+tree $WORK
+
+popd