fix(aws-apigateway): add integrationHttpMethod prop to AwsIntegration

Allows a custom http method to be used for an AWS integration, using POST as default.

Fixes aws#2105

packages/@aws-cdk/aws-apigateway/lib/integrations/aws.ts

@@ -49,6 +49,14 @@ export interface AwsIntegrationProps {
  */
  readonly actionParameters?: { [key: string]: string };
 
+ /**
+ * The integration's HTTP method type.
+ * Required unless you use a MOCK integration.
+ *
+ * @default POST
+ */
+ readonly integrationHttpMethod?: string;
+
  /**
  * Integration options, such as content handling, request/response mapping, etc.
  */
@@ -70,7 +78,7 @@ export class AwsIntegration extends Integration {
  const { apiType, apiValue } = parseAwsApiCall(props.path, props.action, props.actionParameters);
  super({
  type,
- integrationHttpMethod: 'POST',
+ integrationHttpMethod: props.integrationHttpMethod || 'POST',
  uri: new cdk.Token(() => {
  if (!this.scope) { throw new Error('AwsIntegration must be used in API'); }
  return this.scope.node.stack.formatArn({

packages/@aws-cdk/aws-apigateway/test/test.method.ts

@@ -87,6 +87,38 @@ export = {
  test.done();
  },
 
+ 'integration with a custom http method can be set via a property'(test: Test) {
+ // GIVEN
+ const stack = new cdk.Stack();
+ const api = new apigateway.RestApi(stack, 'test-api', { cloudWatchRole: false, deploy: false });
+
+ // WHEN
+ new apigateway.Method(stack, 'my-method', {
+ httpMethod: 'POST',
+ resource: api.root,
+ integration: new apigateway.AwsIntegration({ service: 's3', path: 'bucket/key', integrationHttpMethod: 'GET' })
+ });
+
+ // THEN
+ expect(stack).to(haveResource('AWS::ApiGateway::Method', {
+ Integration: {
+ IntegrationHttpMethod: "GET",
+ Type: "AWS",
+ Uri: {
+ "Fn::Join": [
+ "",
+ [
+ "arn:", { Ref: "AWS::Partition" }, ":apigateway:",
+ { Ref: "AWS::Region" }, ":s3:path/bucket/key"
+ ]
+ ]
+ }
+ }
+ }));
+
+ test.done();
+ },
+
  'use default integration from api'(test: Test) {
  // GIVEN
  const stack = new cdk.Stack();