automate chart updates

.travis.yml

@@ -28,6 +28,10 @@ after_success:
       docker login -u="$DOCKER_USER" -p="$DOCKER_PASSWORD"
       docker push bitnami/monocular-api
       docker push bitnami/monocular-ui
+
+      if [[ -n "$TRAVIS_TAG" ]]; then
+        bash ./scripts/repo-sync.sh
+      fi
     fi
   - bash <(curl -s https://codecov.io/bash)
 

scripts/repo-sync.sh

@@ -0,0 +1,141 @@
+#!/bin/bash -e
+# 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.
+#
+
+# Based on https://github.com/migmartri/helm-hack-night-charts/blob/master/repo-sync.sh
+# USAGE: repo-sync.sh <commit-changes?>
+
+log () {
+  echo -e "\033[0;33m$(date "+%H:%M:%S")\033[0;37m ==> $1."
+}
+
+travis_setup_git() {
+  git config user.email "[email protected]"
+  git config user.name "Travis CI"
+  COMMIT_MSG="Updating chart repository, travis build #$TRAVIS_BUILD_NUMBER"
+  git remote add upstream "https://[email protected]/helm/monocular.git"
+}
+
+show_important_vars() {
+    echo "  REPO_URL: $REPO_URL"
+    echo "  BUILD_DIR: $BUILD_DIR"
+    echo "  REPO_DIR: $REPO_DIR"
+    echo "  TRAVIS: $TRAVIS"
+    echo "  COMMIT_CHANGES: $COMMIT_CHANGES"
+}
+
+# https://github.com/bitnami/test-infra/blob/master/circle/docker-release-image.sh#L234
+HELM_VERSION=2.4.2
+install_helm() {
+  if ! which helm >/dev/null ; then
+    log "Downloading helm..."
+    if ! wget -q https://storage.googleapis.com/kubernetes-helm/helm-v${HELM_VERSION}-linux-amd64.tar.gz; then
+      log "Could not download helm..."
+      return 1
+    fi
+
+    log "Installing helm..."
+    if ! tar zxf helm-v${HELM_VERSION}-linux-amd64.tar.gz --strip 1 linux-amd64/helm; then
+      log "Could not install helm..."
+      return 1
+    fi
+    chmod +x helm
+    sudo mv helm /usr/local/bin/helm
+
+    if ! helm version --client; then
+      return 1
+    fi
+
+    if ! helm init --client-only >/dev/null; then
+      return 1
+    fi
+  fi
+}
+
+COMMIT_CHANGES="${1}"
+: ${COMMIT_CHANGES:=false}
+: ${TRAVIS:=false}
+REPO_URL=https://helm.github.io/monocular
+BUILD_DIR=$(mktemp -d)
+# Current directory
+REPO_DIR="$( cd "$(dirname $(dirname "${BASH_SOURCE[0]}"))" && pwd )"
+CHART_PATH="$REPO_DIR/deployment/monocular"
+COMMIT_MSG="Updating chart repository"
+
+show_important_vars
+
+if [ $TRAVIS != "false" ]; then
+  log "Configuring git for Travis-ci"
+  travis_setup_git
+else
+  git remote add upstream [email protected]:helm/monocular.git || true
+fi
+
+git fetch upstream
+git checkout gh-pages
+
+log "Initializing build directory with existing charts index"
+if [ -f index.yaml ]; then
+  cp index.yaml $BUILD_DIR
+fi
+
+git checkout master
+
+update_chart_version() {
+  CHART_VERSION=$(grep '^version:' $1/Chart.yaml | awk '{print $2}')
+  CHART_VERSION_NEXT="${CHART_VERSION%.*}.$((${CHART_VERSION##*.}+1))"
+  sed -i 's|^version:.*|version: '"$CHART_VERSION_NEXT"'|g' $1/Chart.yaml
+  sed -i 's|^appVersion:.*|appVersion: '"$2"'|g' $1/Chart.yaml
+  sed -i '/bitnami\/monocular/{n; s/tag:.*/tag: '"$2"'/}' $1/values.yaml
+
+  if [ $COMMIT_CHANGES != "false" ]; then
+    log "Commiting chart source changes to master branch"
+    git add $1/Chart.yaml $1/values.yaml
+    git commit --message "chart: bump to $CHART_VERSION_NEXT"
+    git push -q upstream HEAD:master
+  fi
+}
+
+log "Updating chart version"
+update_chart_version $CHART_PATH $TRAVIS_TAG
+
+install_helm
+
+# Package all charts and update index in temporary buildDir
+log "Packaging charts from source code"
+pushd $BUILD_DIR
+  log "Packaging chart"
+  helm package $REPO_DIR/deployment/monocular
+
+  log "Indexing repository"
+  if [ -f index.yaml ]; then
+    helm repo index --url ${REPO_URL} --merge index.yaml .
+  else
+    helm repo index --url ${REPO_URL} .
+  fi
+popd
+
+git reset upstream/gh-pages
+cp $BUILD_DIR/* $REPO_DIR
+
+# Commit changes are not enabled during PR
+if [ $COMMIT_CHANGES != "false" ]; then
+  log "Commiting changes to gh-pages branch"
+  git add *.tgz index.yaml
+  git commit --message "$COMMIT_MSG"
+  git push -q upstream HEAD:gh-pages
+fi
+
+log "Repository cleanup and reset"
+git reset --hard upstream/master
+git clean -df .