feat(lambda): allow specify event sources in props (#1746)

To enable declarative use cases, allow specifying IEventSources
when defining the function.

packages/@aws-cdk/aws-lambda/lib/function.ts

@@ -4,6 +4,7 @@ import iam = require('@aws-cdk/aws-iam');
 import sqs = require('@aws-cdk/aws-sqs');
 import cdk = require('@aws-cdk/cdk');
 import { Code } from './code';
+import { IEventSource } from './event-source';
 import { FunctionBase, FunctionImportProps, IFunction } from './function-base';
 import { Version } from './lambda-version';
 import { CfnFunction } from './lambda.generated';
@@ -190,6 +191,13 @@ export interface FunctionProps {
  * @see https://docs.aws.amazon.com/lambda/latest/dg/concurrent-executions.html
  */
  reservedConcurrentExecutions?: number;
+
+ /**
+ * Event sources for this function.
+ *
+ * You can also add event sources using `addEventSource`.
+ */
+ events?: IEventSource[];
 }
 
 /**
@@ -383,6 +391,10 @@ export class Function extends FunctionBase {
  for (const layer of props.layers || []) {
  this.addLayer(layer);
  }
+
+ for (const event of props.events || []) {
+ this.addEventSource(event);
+ }
  }
 
  /**

packages/@aws-cdk/aws-lambda/test/test.lambda.ts

@@ -1259,6 +1259,34 @@ export = {
  Runtime: 'nodejs' },
  DependsOn: [ 'MyLambdaServiceRole4539ECB6' ] } } });
  test.done();
+ },
+
+ 'its possible to specify event sources upon creation'(test: Test) {
+ // GIVEN
+ const stack = new cdk.Stack();
+
+ let bindCount = 0;
+
+ class EventSource implements lambda.IEventSource {
+ public bind(_: lambda.FunctionBase): void {
+ bindCount++;
+ }
+ }
+
+ // WHEN
+ new lambda.Function(stack, 'fn', {
+ code: lambda.Code.inline('boom'),
+ runtime: lambda.Runtime.NodeJS810,
+ handler: 'index.bam',
+ events: [
+ new EventSource(),
+ new EventSource(),
+ ]
+ });
+
+ // THEN
+ test.deepEqual(bindCount, 2);
+ test.done();
  }
 };