I am working on a SAM application having a lambda function with API Gateway as source of event. API Endpoint is a POST Method requiring a set of parameters in request body. API Gateway provides us the capability of validating request body by specifying a request Model using AWS Console.
Refer Screenshots below of AWS Console options:
I need to set similar options via SAM template and able to link a Model with the request body but not able to set request validator option and is not able to find any documentation or example also.
Below is my SAM Template
AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: SAM Template
Parameters:
Stage:
Type: String
Default: dev
Resources:
MyApiGateway:
Type: AWS::Serverless::Api
Properties:
Name: My AWS Serverless API
StageName: !Ref Stage
Models:
ExchangeRate:
$schema: "http://json-schema.org/draft-04/schema#"
properties:
base:
type: string
target:
type: string
required:
- base
- target
title: User
type: object
ExchangeRateFunction:
Type: AWS::Serverless::Function
Properties:
CodeUri: functions/exchange-rate/
Handler: index.handler
Runtime: nodejs12.x
Description: Function to Get Currency Exchange Rate
MemorySize: 128
Timeout: 3
Policies:
- AWSLambdaBasicExecutionRole
Events:
HelloWorld:
Type: Api
Properties:
RestApiId: !Ref MyApiGateway
Path: /exchange
Method: POST
RequestModel:
Model: ExchangeRate
Required: true
Outputs:
ExchangeRateFunction:
Description: "Exchange Rate Lambda Function ARN"
Value: !GetAtt ExchangeRateFunction.Arn
MyApiGateway:
Description: "My Seed API EndPoint"
Value: !Sub "https://${MyApiGateway}.execute-api.${AWS::Region}.amazonaws.com/${Stage}"
Documentation referred
Please let me know how can I set 'Request Validator' to 'Validate body' option using SAM template. Will appreciate the help
I've ran into the same problem, apparently this feature is lacking from SAM for a while, as you can see from this previous question:
How to add a request validator in a AWS SAM template for AWS::Serverless::Api?
Also, a few issues have been opened in GitHub, the last one being:
https://github.com/awslabs/serverless-application-model/issues/1403
I've hacked a solution that includes two additional properties in the SAM specification to solve this issue, but I wouldn't expect it to actually become a PR. I can provide further instructions if you'd like to use my forked repo to deploy from a develop branch.
Add ValidateBody: true ie
RequestModel:
Model: ExchangeRate
Required: true
ValidateBody: true
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