Feature/gcp integration

app.yaml

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+# Copyright 2017, Google, Inc.
+# 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.
+#
+runtime: nodejs
+env: flex
+
+# Temporary setting to keep gcloud from uploading node_modules
+skip_files:
+ - ^node_modules$

config.js

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+// Copyright 2017, Google, Inc.
+// 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.
+
+'use strict';
+
+// Hierarchical node.js configuration with command-line arguments, environment
+// variables, and files.
+const nconf = module.exports = require('nconf');
+const path = require('path');
+
+nconf
+  // 1. Command-line arguments
+  .argv()
+  // 2. Environment variables
+  .env([
+    'CLOUD_BUCKET',
+    'DATA_BACKEND',
+    'GCLOUD_PROJECT',
+    'INSTANCE_CONNECTION_NAME',
+    'NODE_ENV',
+    'PORT'
+  ])
+  // 3. Config file
+  .file({ file: path.join(__dirname, 'config.json') })
+  // 4. Defaults
+  .defaults({
+    // Typically you will create a bucket with the same name as your project ID.
+    CLOUD_BUCKET: 'bucket-name-here',
+
+    // This is the id of your project in the Google Cloud Developers Console.
+    GCLOUD_PROJECT: 'project-name-here',
+
+    PORT: 8080
+  });
+
+// Check for required settings
+checkConfig('GCLOUD_PROJECT');
+checkConfig('CLOUD_BUCKET');
+
+function checkConfig (setting) {
+  if (!nconf.get(setting)) {
+    throw new Error(`You must set ${setting} as an environment variable or in config.json!`);
+  }
+}