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https://github.com/weakky/graphql-boilerplate-lambda-sync

A lambda function to synchronize graphql-boilerplates
https://github.com/weakky/graphql-boilerplate-lambda-sync

Last synced: 10 months ago
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A lambda function to synchronize graphql-boilerplates

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# Serverless Github webhook listener

This service will listen to github webhooks fired by a given repository.

## Use Cases

* Custom github notifications
* Automatically tagging github issues
* Pinging slack on new Pull requests
* Welcoming new stargazers
* etc.

## How it works

```
┌───────────────┐ ┌───────────┐
│ │ │ │
│ Github repo │ │ Github │
│ activity │────Trigger───▶│ Webhook │
│ │ │ │
└───────────────┘ └───────────┘

┌────POST────────┘

┌──────────▼─────────┐
│ ┌────────────────┐ │
│ │ API Gateway │ │
│ │ Endpoint │ │
│ └────────────────┘ │
└─────────┬──────────┘


┌──────────▼──────────┐
│ ┌────────────────┐ │
│ │ │ │
│ │ Lambda │ │
│ │ Function │ │
│ │ │ │
│ └────────────────┘ │
└─────────────────────┘



┌────────────────────┐
│ │
│ Do stuff │
│ │
└────────────────────┘
```

## Setup

1. Set your webhook secret token in `serverless.yml` by replacing `REPLACE-WITH-YOUR-SECRET-HERE` in the environment variables `GITHUB_WEBHOOK_SECRET`.

```yml
provider:
name: aws
runtime: nodejs6.10
environment:
GITHUB_WEBHOOK_SECRET: REPLACE-WITH-YOUR-SECRET-HERE
```

2. Deploy the service

```
export AWS_ACCESS_KEY_ID=__YOUR_AWS_ACCESS_KEY__
export AWS_SECRET_ACCESS_KEY=__YOUR_AWS_SECRET_KEY__
```

```yaml
serverless deploy
```

After the deploy has finished you should see something like:
```bash
Service Information
service: github-webhook-listener
stage: dev
region: us-east-1
api keys:
None
endpoints:
POST - https://abcdefg.execute-api.us-east-1.amazonaws.com/dev/webhook
functions:
github-webhook-.....github-webhook-listener-dev-githubWebhookListener
```

3. Configure your webhook in your github repository settings. [Setting up a Webhook](https://developer.github.com/webhooks/creating/#setting-up-a-webhook)

**(1.)** Plugin your API POST endpoint. (`https://abcdefg.execute-api.us-east-1.amazonaws.com/dev/webhook` in this example). Run `sls info` to grab your endpoint if you don't have it handy.

**(2.)** Plugin your secret from `GITHUB_WEBHOOK_SECRET` environment variable

**(3.)** Choose the types of events you want the github webhook to fire on

![webhook-steps](https://cloud.githubusercontent.com/assets/532272/21461773/db7cecd2-c922-11e6-9362-6bbf4661fe14.jpg)

4. Manually trigger/test the webhook from settings or do something in your github repo to trigger a webhook.

You can tail the logs of the lambda function with the below command to see it running.
```bash
serverless logs -f githubWebhookListener -t
```

You should see the event from github in the lambda functions logs.

5. Use your imagination and do whatever you want with your new github webhook listener! 🎉

Let us know if you come up with a cool use case for this service =)