Google - Functions

If you are using Google Cloud Functions as a provider, all functions inside the service are Google Cloud Functions.

Configuration

All of the Google Cloud Functions in your serverless service can be found in serverless.yml under the functions property.

# serverless.yml
service: my-gcloud-service

provider:
  name: google

plugins:
  - serverless-google-cloudfunctions

functions:
  first:
    handler: http
    events:
      - http: path

Handler

The handler property should be the function name you've exported in your entrypoint file.

When you e.g. export a function with the name http in index.js your handler should be handler: http.

// index.js
exports.http = (request, response) => {}

A note about index.js and the entrypoint file

Google Cloud Functions assumes that you have a index.js or function.js file with the exported handler functions in the root of your project (you can read more about that in their docs).

However you can overwrite this by specifying the entrypoint file with the help of the main config parameter in the projects package.json file.

Our recommendation is to have an index.js file with all the function handlers in the projects root directory.

Memory size and timeout

The memorySize and timeout for the functions can be specified on the provider or function level. The provider wide definition causes all functions to share this config, whereas the function wide definition means that this configuration is only valid for the function.

The default memorySize is 256 and the default timeout is 60s if not specified.

# serverless.yml

provider:
  memorySize: 1024
  timeout: 90s

functions:
  first:
    handler: first
  second:
    handler: second
    memorySize: 512
    timeout: 120s

Handler signatures

Google Cloud Functions have different handler signatures dependent on the event type which will trigger them.

`http` events

exports.http = (request, response) => {
  response.status(200).send('Hello World!');
};

`event` events

exports.event = (event, callback) => {
  console.log('Hello World!');
  callback();
};

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Read this on the main serverless docs site