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  2. Configuring API Gateway as an HTTP proxy to other AWS services

How do I configure API Gateway as an HTTP proxy to other AWS services?

In this guide, we will configure AWS API Gateway to act as an HTTP proxy to other AWS services using Pulumi. This setup allows you to expose AWS services through API Gateway endpoints, providing a unified API interface.

Key Points:

  • We will create an API Gateway REST API.
  • We will set up a resource and method to act as an HTTP proxy.
  • We will integrate it with an AWS service endpoint.
import * as pulumi from "@pulumi/pulumi";
import * as aws from "@pulumi/aws";

// Create an API Gateway REST API
const api = new aws.apigateway.RestApi("myApi", {
    name: "myApi",
    description: "API Gateway as an HTTP proxy to other AWS services",
});

// Create a resource in the API
const resource = new aws.apigateway.Resource("myResource", {
    parentId: api.rootResourceId,
    pathPart: "myservice",
    restApi: api.id,
});

// Create a method for the resource
const method = new aws.apigateway.Method("myMethod", {
    authorization: "NONE",
    httpMethod: "ANY",
    resourceId: resource.id,
    restApi: api.id,
    requestParameters: {
        "method.request.path.proxy": true,
    },
});

// Integrate the method with an HTTP proxy
const integration = new aws.apigateway.Integration("myIntegration", {
    restApi: api.id,
    resourceId: resource.id,
    httpMethod: method.httpMethod,
    type: "HTTP_PROXY",
    uri: "https://my-aws-service-endpoint.amazonaws.com/{proxy}",
    integrationHttpMethod: "ANY",
    passthroughBehavior: "WHEN_NO_MATCH",
    requestParameters: {
        "integration.request.path.proxy": "method.request.path.proxy",
    },
});

// Deploy the API
const deployment = new aws.apigateway.Deployment("myDeployment", {
    restApi: api.id,
    stageName: "prod",
}, { dependsOn: [integration] });

// Export the API URL
export const apiUrl = deployment.invokeUrl;

Summary

In this example, we configured an AWS API Gateway to act as an HTTP proxy for other AWS services. We created an API, added a resource and method, and set up an HTTP proxy integration. This setup allows you to expose AWS services through a unified API Gateway endpoint.

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