Particle --> Google Cloud Pub/Sub --> Datastore Tutorial

This tutorial code is intended to allow data to flow from Google Cloud Pub/Sub to Google Cloud Datastore. This is part of a larger tutorial for sending data from Particle devices into a hosted database.

You can find the full documentation on the Particle <> Google Cloud integration on our docs .

Prerequisites

Before this script will become useful to you, please make sure you have done all of the following:

Have Particle device(s) collecting data and publishing events
Have a Google Cloud Platform account with a project and a Pub/Sub topic
Enabled the Google Cloud Platform integration on Particle
Created a Google Cloud Platform private key
Created a Google Cloud Pub/Sub subscription

For all required steps, check out the full tutorial

Setup and configuration

Clone the repository

git clone https://github.com/spark/google-cloud-datastore-tutorial.git

Add your Private Key

Create a file in the root of your local repository called gcp_private_key.json:

touch gcp_private_key.json

Next, paste in the contents of your Google Cloud Platform JSON private key. It should look something like this:

{
  "type": "service_account",
  "project_id": "[GOOGLE CLOUD PLATFORM PROJECT ID]",
  "private_key_id": "[PRIVATE_KEY_ID]",
  "private_key": "[PRIVATE_KEY]"
  "client_email": "[CLIENT_EMAIL]",
  "client_id": "[CLIENT_ID]",
  "auth_uri": "https://accounts.google.com/o/oauth2/auth",
  "token_uri": "https://accounts.google.com/o/oauth2/token",
  "auth_provider_x509_cert_url": "[CERT_URL]",
  "client_x509_cert_url": "[CLIENT_CERT_URL]"
}

Configure the Script

Open up tutorial.js and update the config object for your Google Cloud Platform configuration:

var config = {
	gcpProjectId: '[YOUR PROJECT ID]',
	gcpPubSubSubscriptionName: '[YOUR PUB/SUB SUBSCRIPTION NAME]',
	gcpServiceAccountKeyFilePath: './gcp_private_key.json'
}

gcpProjectId: Your Google Cloud Platform Project ID
gcpPubSubSubscriptionName: Your Google Cloud Platform Pub/Sub topic's subscription name

Running the application

Install dependencies: npm install
Run the script: node tutorial.js