arturgrigio / serverless-aws-lambda-apigateway-vue

A quick demonstration of lambda + rds + API Gateway + Vue.js

DEMO https://serverless-aws.herokuapp.com/

BACKEND SETUP

1) Setting up the RDS using aws-cli

aws rds create-db-instance \
    --db-instance-identifier serverless \
    --db-instance-class db.t2.micro \
    --engine MySQL \
    --allocated-storage 5 \
    --no-publicly-accessible \
    --db-name serverless \
    --master-username serverless \
    --master-user-password YOUR_PASSWORD_HERE \
    --backup-retention-period 1

2) Create an execution role like described here:

https://docs.aws.amazon.com/lambda/latest/dg/vpc-rds-create-iam-role.html Save the ARN ID for the role

3) Update your env variables and install pymysql

• Navigate to /setup/rds_config.example.py and update your credentials.
• Rename the file to rds_config.example.py

• Install pymysql: pip install pymysql -t /PATH/TO/DIRECTORY/

• zip the YOUR_FUNCTION/app.py and rds_config.py into app.zip
  • you can use this command too cd INTO/SETUP/DIRECTORY && zip -r app.zip app.py rds_config.py pymysql

4) Setting up the Lambda using aws-cli

aws lambda create-function \
--region us-east-1 \
--function-name   serverless-get-employees  \
--zip-file fileb://YOUR_PATH_TO/app.zip \
--role execution-role-arn \
--handler app.handler \
--runtime python3.6 \
--vpc-config SubnetIds=comma-separated-subnet-ids,SecurityGroupIds=default-vpc-security-group-id \
--profile adminuser

Testing

aws lambda invoke \
--function-name serverless-get-employees  \
--region us-west-1 \
--profile YOUR_USER \
output.txt  

Repeat step 4 for each one of your lambda functions

Creating the API Gateway endpoints

Create the API gateway:

aws apigateway create-rest-api \
--name serverless \
--region us-west-1 \
--profile profile

Create a resource on the gateway:

aws apigateway create-resource \
--rest-api-id api-id \
--parent-id root-id \
--path-part employee

Create a method:

aws apigateway put-method \
--rest-api-id api-id \
--resource-id resource-id \
--http-method POST \
--authorization-type NONE

FRONTEND SETUP

1) Create the vue project

vue init webpack serverless && cd serverless && npm install

2) Build the dist for deployment

npm run build

3) Deploy on heroku instance

cd INTO YOUR YOUR/PATH/setup/frontend/setup
npm run build
git add .
git commit -a -m "Adding files."
git push heroku master

API endpoints

Host: https://iaeoli1xlg.execute-api.us-west-1.amazonaws.com/prod/

employee/get - GET

employee/add - POST

required params:

first, last, email

employee/update - POST

required params:

id, first, last, email

employee/delete - POST

required params:

id

TODO

• Data validation in Vue using vee-validate
• Date validation in lambda
• Refactor Frontend
• Deploy on S3 to solve:
  • Cold boot issue with Heroku where the api call will fail silently