It makes rest api lambda simple and readable.
$ pip install aws-lambda-rest-apior
# requirements.txt
︙
aws-lambda-rest-api
︙Suppose write resource file as below,
Resources:
QuestionApi:
Type: AWS::Serverless::Function
Properties:
CodeUri: questions/
Handler: rest.lambda_handler
Runtime: python3.8
Events:
GetQuestions:
Type: Api
Properties:
Path: /questions
Method: get
GetQuestion:
Type: Api
Properties:
Path: /questions/{question_id}
Method: get
CreateQuestion:
Type: Api
Properties:
Path: /questions
Method: post
UpdateQuestion:
Type: Api
Properties:
Path: /questions/{question_id}
Method: put
PartialUpdateQuestion:
Type: Api
Properties:
Path: /questions/{question_id}
Method: put
DestroyQuestion:
Type: Api
Properties:
Path: /questions/{question_id}
Method: deleteYou can write rest.py as below.
from aws_lambda_rest_api import RestApi
class QuestionApi(RestApi):
detail_key = 'question_id'
def list(self, event, context):
return {
'statusCode': 200,
'body': [1, 2, 3],
}
def retrieve(self, event, context):
question_id = event['pathParameters'].get('question_id')
return {
'statusCode': 200,
'body': {'id': question_id, 'title': 'Hello Question'},
}
def create(self, event, context):
return {
'statusCode': 200,
'body': 'Done create.',
}
def update(self, event, context):
question_id = event['pathParameters'].get('question_id')
return {
'statusCode': 200,
'body': 'Done update.',
}
def partial_update(self, event, context):
question_id = event['pathParameters'].get('question_id')
return {
'statusCode': 200,
'body': 'Done update partially.',
}
def destroy(self, event, context):
question_id = event['pathParameters'].get('question_id')
return {
'statusCode': 200,
'body': 'Done destroy.'
}
lambda_handler = QuestionApi().create_handler()The chart below shows the relationship between the http method and overrided method.
| Http Method | Detail? | Overrided Method |
|---|---|---|
| GET | TRUE | retrieve |
| GET | FALSE | list |
| POST | TRUE | - |
| POST | FALSE | create |
| PUT | TRUE | update |
| PUT | FALSE | - |
| PATCH | TRUE | partial_update |
| PATCH | FALSE | - |
| DELETE | TRUE | destroy |
| DELETE | FALSE | - |
| ANY | ANY | default |
$ pipenv run clean
$ pipenv run package
$ pipenv run publish