feat: Support serviceAccount option for deployment (#215)

Co-authored-by: Xin Yi <xin.yi@postmates.com>
Co-authored-by: Xin Yi <mr.xin.yi@gmail.com>
Co-authored-by: Luis Eduardo Chacón <luisgreen@gmail.com>

Author: 3 people

package/lib/compileFunctions.js

@@ -32,6 +32,10 @@ module.exports = {
         `gs://${this.serverless.service.provider.deploymentBucketName}/${this.serverless.service.package.artifactFilePath}`
       );
 
+      funcTemplate.properties.serviceAccountEmail =
+        _.get(funcObject, 'serviceAccountEmail') ||
+        _.get(this, 'serverless.service.provider.serviceAccountEmail') ||
+        null;
       funcTemplate.properties.availableMemoryMb =
         _.get(funcObject, 'memorySize') ||
         _.get(this, 'serverless.service.provider.memorySize') ||
@@ -48,6 +52,10 @@ module.exports = {
         funcObject.environment // eslint-disable-line comma-dangle
       );
 
+      if (!funcTemplate.properties.serviceAccountEmail) {
+        delete funcTemplate.properties.serviceAccountEmail;
+      }
+
       if (funcObject.vpc) {
         _.assign(funcTemplate.properties, {
           vpcConnector: _.get(funcObject, 'vpc') || _.get(this, 'serverless.service.provider.vpc'),

provider/googleProvider.js

@@ -41,6 +41,27 @@ class GoogleProvider {
       logging: google.logging('v2'),
       cloudfunctions: google.cloudfunctions('v1'),
     };
+
+    this.variableResolvers = {
+      gs: this.getGsValue,
+    };
+  }
+
+  getGsValue(variableString) {
+    const groups = variableString.split(':')[1].split('/');
+    const bucket = groups.shift();
+    const object = groups.join('/');
+
+    return this.serverless
+      .getProvider('google')
+      .request('storage', 'objects', 'get', {
+        bucket,
+        object,
+        alt: 'media',
+      })
+      .catch(err => {
+        throw new Error(`Error getting value for ${variableString}. ${err.message}`);
+      });
   }
 
   request() {