Crash Alert

Get an e-mail when NZTA Wellington mentions a crash.

Why?

So I know whether to leave work or to stay in town this afternoon.

Dependencies

• Twitter developer account (api key)
• Amazon AWS account (for SES to send e-mail)
• node (developed on 6)

Setting up

Create a Twitter App account at https://developer.twitter.com/en.html

Twitter API requires 4 pieces of data:

• A consumer key
• A consumer secret
• An access token
• An access key

Running the app

The following parameters must be set as environment variables.

TWITTER_CONSUMER_KEY=""
TWITTER_CONSUMER_SECRET=""
TWITTER_ACCESS_TOKEN=""
TWITTER_ACCESS_KEY=""
AWS_ACCESS_KEY_ID=""
AWS_SECRET_ACCESS_KEY=""
CRASHALERT_EMAIL_FROM=""
CRASHALERT_EMAIL_TO=""

Don’t forget to npm install
$ npm install

$ npm start

Build and run with Docker

1. First ensure your env vars are set locally.

   env

2. Next, substitute them in a dockerfile with envsubst.

   cat Dockerfile | envsubst > DockerfileWithEnvVars

3. Build with the substituted dockerfile.

   docker build -f DockerfileWithEnvVars .

4. Run the dockerfile.

   docker run <image>

If variable substitution worked you should see:

> crashalert@0.0.3 start /opt/crashalert
> node server.js
connection success https://stream.twitter.com/1.1/statuses/filter.json?follow=898926264