Serverless OINP Notifier
OINP stands for Ontario Immigrant Nominee Program. You can learn more about it here.
This is a fully serverless application running on AWS. It leverages AWS Free Tier to send notifications whenever there is an update on the targeted OINP official webpage.
Prerequisites
You will need the following packages properly installed in your local environment in order to deploy this app.
| Name | Tested version(s) |
|---|---|
| Git | 2.17.0 |
| Node.js (with NPM) | node==12.16.3, npm==6.14.4 |
| Serverless Framework | core==1.77.1, plugin==3.6.18, sdk==2.3.1, components==2.33.1 |
| AWS CLI | aws-cli/2.0.16 Python/3.7.4 Darwin/18.7.0 botocore/2.0.0dev20 |
Get started
Search for [Action required] in serverless.yml, and change the bucketName to make it globally unique.
git clone https://github.com/jellycsc/serverless-oinp-notifier.git
cd serverless-oinp-notifier/
npm i -g serverless
npm i
sls deploy
Features
- Uses headless Chrome to render dynamic javascript content [ref]
- Checks for update every minute [ref]
- Ability to send notifications of type HTTP/HTTPS, SMS or Email [ref]
- Full-page screenshot is taken on each webpage update [ref]
A list of AWS services used in this app:
- Lambda
- CloudFormation
- S3
- DynamoDB
- CloudWatch
- EventBridge
Estimated monthly cost
$0 since everything is under "Always Free" type of AWS Free Tier
Extra notes and tips
DynamoDB table design
- PK: webpage URL
- SK: a date-time string specified in ISO 8601 format
It is designed this way to allow easy query for the latest record.
Use lambda layers
You can use lambda layers to reduce the deployment package size from 45 MB to <100 KB. Checkout the use-layers branch of this repo.