added gcp deployment scripts

indexer-service-gcp/src/main/appengine/app.yaml

@@ -33,4 +33,4 @@ handlers:
     script: this field is required, but ignored
 
 env_variables:
-  GOOGLE_CLOUD_PROJECT: "opendes"
+  GOOGLE_CLOUD_PROJECT: "GOOGLE_CLOUD_PROJECT_PLACE_HOLDER"

indexer-service-gcp/src/scripts/deploy.sh

+#!/bin/bash
+
+# Exit as soon as a command fails
+set -e
+
+echo "  Project = $GCLOUD_PROJECT"
+echo "  Source branch = $BUILD_SOURCEBRANCHNAME"
+echo "  Build definition = $BUILD_DEFINITIONNAME"
+echo "  Build number = $BUILD_BUILDNUMBER"
+
+echo "current working directory"
+pwd
+
+echo "working directory contents"
+ls
+
+DEPLOY_DIR="deploy_dir"
+mkdir -p $DEPLOY_DIR
+
+cp app.yaml $DEPLOY_DIR
+cp indexer-service-gcp-*.jar $DEPLOY_DIR
+
+# Go to deploy directory
+cd $DEPLOY_DIR
+
+# apply sed to set PROJECT_ID with its value in app.yaml
+echo "Replacing GOOGLE_CLOUD_PROJECT_PLACE_HOLDER with GCLOUD_PROJECT"
+sed -i "s|GOOGLE_CLOUD_PROJECT_PLACE_HOLDER|$GCLOUD_PROJECT|g" app.yaml
+cat app.yaml
+
+# check the current deployed version of the same service
+SERVICE_NAME="os-indexer"
+count=$(gcloud app services list --project $GCLOUD_PROJECT | grep $SERVICE_NAME | wc -l)
+if [ $count -gt 0 ]; then
+  CURRENT_VERSION=$(gcloud app services describe $SERVICE_NAME --project $GCLOUD_PROJECT --format=json | jq --raw-output '.split.allocations | keys[0]')
+else
+  CURRENT_VERSION=""
+fi
+
+NEW_VERSION=$BUILD_BUILDNUMBER #to keep it unique
+NEW_VERSION=$(echo "$NEW_VERSION" | tr _ - | tr . - | tr '[:upper:]' '[:lower:]')
+
+echo "Current version = $CURRENT_VERSION"
+echo "Version to be deployed = $NEW_VERSION"
+
+if [ "$NEW_VERSION" != "$CURRENT_VERSION" -o "$BUILD_FORCE_DEPLOY" = "true" ]
+then
+    gcloud app deploy --quiet --version=$NEW_VERSION --project=$GCLOUD_PROJECT app.yaml
+else
+    echo "Not deploying the application because $NEW_VERSION is already deployed and force deploy flag is not set to true"
+fi