CDKでS3⇢Step Functions

stack.ts

import * as events from '@aws-cdk/aws-events';
import * as s3 from '@aws-cdk/aws-s3';
import * as sfn from '@aws-cdk/aws-stepfunctions';
import * as targets from '@aws-cdk/aws-events-targets';

function cloudTrailS3Event(bucket: s3.IBucket, detailType: string, grantOps: string[]): events.EventPattern {
  return {
    source: ["aws.s3"],
    detailType: [detailType],
    detail: {
      eventSource: ["s3.amazonaws.com"],
      eventName: grantOps,
      requestParameters: {
        bucketName: [bucket.bucketName],
      }
    }
  };
}

const grantOps = ["CompleteMultipartUpload", "PutObject", "CopyObject"];
const rule = new events.Rule(this, "s3-event-rule", {
  enabled: true,
});
rule.addEventPattern(cloudTrailS3Event(bucket, "AWS API Call via CloudTrail", grantOps));
rule.addTarget(new targets.SfnStateMachine(stateMachine));