README.md

Google Cloud Functions Recipes

This recipe shows you how to publish messages to a Cloud Pub/Sub topic from a Cloud Function. Where applicable:

Replace [PROJECT-ID] with your Cloud Platform project ID

Follow the Cloud Functions quickstart guide to setup Cloud Functions for your project

Clone this repository

cd ~/
git clone https://github.com/jasonpolites/gcf-recipes.git
cd gcf-recipes/pubsub

Create a Cloud Pub/Sub topic (if you already have one you want to use, you can skip this step):
```
gcloud alpha pubsub topics create gcf-recipes-topic		
```
Create a Cloud Storage Bucket to stage our deployment
```
gsutil mb gs://[PROJECT-ID]-gcf-recipes-bucket
```

Deploy the "publish" function with an HTTP trigger

gcloud alpha functions deploy publish --bucket [PROJECT-ID]-gcf-recipes-bucket --trigger-http

Deploy the "subscribe" function with the Pub/Sub topic as a trigger

gcloud alpha functions deploy subscribe --bucket [PROJECT-ID]-gcf-recipes-bucket --trigger-topic gcf-recipes-topic

Call the "publish" function

gcloud alpha functions call publish --data '{"topic": "gcf-recipes-topic", "message": "Hello World!"}'

Check the logs for the "subscribe" function

gcloud alpha functions get-logs subscribe

You should see something like this in your console

D      ... User function triggered, starting execution
I      ... Hello World!
D      ... Execution took 1 ms, user function completed successfully

This recipe comes with a suite of unit tests. To run the tests locally, just use npm test

npm install
npm test

The tests will also produce code coverage reports, written to the /coverage directory. After running the tests, you can view coverage with

open coverage/lcov-report/index.html