Api Gateway Mapping Template Examples

Api Gateway Mapping Template Examples - API Gateway uses the following logic to select a mapping template in Velocity Template Language VTL to map the payload from a method request to the corresponding integration request or to map the payload from an integration response to the corresponding method response

In this blog post we show you how to use Amazon API Gateway mapping templates to isolate your API consumers from API changes This enables your API consumers to migrate to new API versions on their own schedule

Api Gateway Mapping Template Examples

Api Gateway Mapping Template Examples

Following are example uses for a mapping template override: To create a new header (or overwrite an existing header) as a concatenation of two parameters To override the response code to a success or failure code based on the contents of the body To conditionally remap a parameter based on its contents or the contents of some other.

The following example shows a mapping template that maps incoming context variables to backend variables with slightly different names in an integration request payload Note Note that one of the variables is an API key This example assumes that the method has require API key enabled

Using API Gateway Mapping Templates To Handle Changes In

Models and mapping template examples The following sections provide examples of models and mapping templates that could be used as a starting point for your own APIs in API Gateway For more information about models and mapping templates in API Gateway see PetStore mapping template

AWS API Gateway Mapping Template Cheatsheet

Mapping Template set inputRoot input path user id context authorizer claims sub The sub portion of this may be different for you however inside of a Cognito User Pool this is the unique user id This would then be referenced in the Lambda function like so event user id Query

Amazon API Gateway API Request And Response Data Mapping

For example for a non proxy request URL of rest api id execute api region amazonaws stage root child the context path value is stage root child n n n context protocol nThe request protocol for example HTTP 1 1

Using API Gateway Mapping Templates To Handle Changes In Your Back end

There are three options Choose When no template matches the request Content Type header if you want the method request body to pass through the integration request to the backend without transformation when the method request content type does not match any content types associated with the mapping templates as defined in the next step Note

This post focused on how to use API Gateway mapping templates to transform requests and responses between formats required by the REST API and model runtime. API Gateway provides numerous additional features that you can use to implement authorization, request validation, caching, response error code mapping, and throttling.

Use A Mapping Template To Override An API S Request And

The following example shows a photo album API in API Gateway We provide an example data transformation additional models and mapping templates For more information about data transformations see Understanding mapping templates For more information about models and mapping templates in API Gateway see PetStore mapping template

Api Gateway Mapping Template Examples

There are three options Choose When no template matches the request Content Type header if you want the method request body to pass through the integration request to the backend without transformation when the method request content type does not match any content types associated with the mapping templates as defined in the next step Note

In this blog post we show you how to use Amazon API Gateway mapping templates to isolate your API consumers from API changes This enables your API consumers to migrate to new API versions on their own schedule

Using API Gateway Mapping Templates To Handle Changes In Your Back end