feat(iot): add Action to put objects in S3 Buckets

package.json

@@ -107,6 +107,8 @@
       "@aws-cdk/aws-eks/yaml/**",
       "@aws-cdk/aws-events-targets/aws-sdk",
       "@aws-cdk/aws-events-targets/aws-sdk/**",
+      "@aws-cdk/aws-iot-actions/case",
+      "@aws-cdk/aws-iot-actions/case/**",
       "@aws-cdk/aws-s3-deployment/case",
       "@aws-cdk/aws-s3-deployment/case/**",
       "@aws-cdk/cloud-assembly-schema/jsonschema",

packages/@aws-cdk/aws-iot-actions/NOTICE

@@ -1,2 +1,32 @@
 AWS Cloud Development Kit (AWS CDK)
 Copyright 2018-2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+
+-------------------------------------------------------------------------------
+
+The AWS CDK includes the following third-party software/licensing:
+
+** case - https://www.npmjs.com/package/case
+Copyright (c) 2013 Nathan Bubna
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+----------------

packages/@aws-cdk/aws-iot-actions/README.md

@@ -49,6 +49,25 @@ new iot.TopicRule(this, 'TopicRule', {
 });
 ```
 
+## Put objects to a S3 bucket
+
+The code snippet below creates an AWS IoT Rule that put objects to a S3 bucket
+when it is triggered.
+
+```ts
+import * as iot from '@aws-cdk/aws-iot';
+import * as actions from '@aws-cdk/aws-iot-actions';
+import * as s3 from '@aws-cdk/aws-s3';
+
+const bucket = new s3.Bucket(this, 'MyBucket');
+
+new iot.TopicRule(this, 'TopicRule', {
+  sql: iot.IotSql.fromStringAsVer20160323("SELECT topic(2) as device_id FROM 'device/+/data'"),
+  actions: [new actions.S3Action(bucket)],
+});
+```
+
+
 ## Put logs to CloudWatch Logs
 
 The code snippet below creates an AWS IoT Rule that put logs to CloudWatch Logs

packages/@aws-cdk/aws-iot-actions/lib/index.ts

@@ -1,2 +1,3 @@
 export * from './cloudwatch-logs-action';
 export * from './lambda-function-action';
+export * from './s3-action';

packages/@aws-cdk/aws-iot-actions/lib/s3-action.ts

@@ -0,0 +1,77 @@
+import * as iam from '@aws-cdk/aws-iam';
+import * as iot from '@aws-cdk/aws-iot';
+import * as s3 from '@aws-cdk/aws-s3';
+import { kebab as toKebabCase } from 'case';
+import { singletonActionRole } from './private/role';
+
+/**
+ * Configuration properties of an action for s3.
+ */
+export interface S3ActionProps {
+  /**
+   * The Amazon S3 canned ACL that controls access to the object identified by the object key.
+   * @see https://docs.aws.amazon.com/AmazonS3/latest/userguide/acl-overview.html#canned-acl
+   *
+   * @default None
+   */
+  readonly cannedAcl?: s3.BucketAccessControl;
+
+  /**
+   * The path to the file where the data is written.
+   *
+   * Supports substitution templates.
+   * @see https://docs.aws.amazon.com/iot/latest/developerguide/iot-substitution-templates.html
+   *
+   * @default '${topic()}/${timestamp()}'
+   */
+  readonly key?: string;
+
+  /**
+   * The IAM role that allows access to the S3.
+   *
+   * @default a new role will be created
+   */
+  readonly role?: iam.IRole;
+}
+
+/**
+ * The action to write the data from an MQTT message to an Amazon S3 bucket.
+ */
+export class S3Action implements iot.IAction {
+  private readonly cannedAcl?: string;
+  private readonly key?: string;
+  private readonly role?: iam.IRole;
+
+  /**
+   * @param bucket The Amazon S3 bucket to which to write data.
+   * @param props Optional properties to not use default
+   */
+  constructor(private readonly bucket: s3.IBucket, props: S3ActionProps = {}) {
+    this.cannedAcl = props.cannedAcl;
+    this.key = props.key;
+    this.role = props.role;
+  }
+
+  bind(rule: iot.ITopicRule): iot.ActionConfig {
+    const role = this.role ?? singletonActionRole(rule);
+    role.addToPrincipalPolicy(this.putEventStatement(this.bucket));
+
+    return {
+      configuration: {
+        s3: {
+          bucketName: this.bucket.bucketName,
+          cannedAcl: this.cannedAcl && toKebabCase(this.cannedAcl.toString()),
+          key: this.key ?? '${topic()}/${timestamp()}',
+          roleArn: role.roleArn,
+        },
+      },
+    };
+  }
+
+  private putEventStatement(bucket: s3.IBucket) {
+    return new iam.PolicyStatement({
+      actions: ['s3:PutObject'],
+      resources: [bucket.arnForObjects('*')],
+    });
+  }
+}

packages/@aws-cdk/aws-iot-actions/package.json

@@ -83,7 +83,9 @@
     "@aws-cdk/aws-iot": "0.0.0",
     "@aws-cdk/aws-lambda": "0.0.0",
     "@aws-cdk/aws-logs": "0.0.0",
+    "@aws-cdk/aws-s3": "0.0.0",
     "@aws-cdk/core": "0.0.0",
+    "case": "1.6.3",
     "constructs": "^3.3.69"
   },
   "homepage": "https://github.com/aws/aws-cdk",
@@ -92,9 +94,13 @@
     "@aws-cdk/aws-iot": "0.0.0",
     "@aws-cdk/aws-lambda": "0.0.0",
     "@aws-cdk/aws-logs": "0.0.0",
+    "@aws-cdk/aws-s3": "0.0.0",
     "@aws-cdk/core": "0.0.0",
     "constructs": "^3.3.69"
   },
+  "bundledDependencies": [
+    "case"
+  ],
   "engines": {
     "node": ">= 10.13.0 <13 || >=13.7.0"
   },

packages/@aws-cdk/aws-iot-actions/test/s3/integ.s3-action.expected.json

@@ -0,0 +1,85 @@
+{
+  "Resources": {
+    "TopicRule40A4EA44": {
+      "Type": "AWS::IoT::TopicRule",
+      "Properties": {
+        "TopicRulePayload": {
+          "Actions": [
+            {
+              "S3": {
+                "BucketName": {
+                  "Ref": "MyBucketF68F3FF0"
+                },
+                "Key": "${topic()}/${timestamp()}",
+                "RoleArn": {
+                  "Fn::GetAtt": [
+                    "TopicRuleTopicRuleActionRole246C4F77",
+                    "Arn"
+                  ]
+                }
+              }
+            }
+          ],
+          "AwsIotSqlVersion": "2016-03-23",
+          "Sql": "SELECT topic(2) as device_id FROM 'device/+/data'"
+        }
+      }
+    },
+    "TopicRuleTopicRuleActionRole246C4F77": {
+      "Type": "AWS::IAM::Role",
+      "Properties": {
+        "AssumeRolePolicyDocument": {
+          "Statement": [
+            {
+              "Action": "sts:AssumeRole",
+              "Effect": "Allow",
+              "Principal": {
+                "Service": "iot.amazonaws.com"
+              }
+            }
+          ],
+          "Version": "2012-10-17"
+        }
+      }
+    },
+    "TopicRuleTopicRuleActionRoleDefaultPolicy99ADD687": {
+      "Type": "AWS::IAM::Policy",
+      "Properties": {
+        "PolicyDocument": {
+          "Statement": [
+            {
+              "Action": "s3:PutObject",
+              "Effect": "Allow",
+              "Resource": {
+                "Fn::Join": [
+                  "",
+                  [
+                    {
+                      "Fn::GetAtt": [
+                        "MyBucketF68F3FF0",
+                        "Arn"
+                      ]
+                    },
+                    "/*"
+                  ]
+                ]
+              }
+            }
+          ],
+          "Version": "2012-10-17"
+        },
+        "PolicyName": "TopicRuleTopicRuleActionRoleDefaultPolicy99ADD687",
+        "Roles": [
+          {
+            "Ref": "TopicRuleTopicRuleActionRole246C4F77"
+          }
+        ]
+      }
+    },
+    "MyBucketF68F3FF0": {
+      "Type": "AWS::S3::Bucket",
+      "UpdateReplacePolicy": "Delete",
+      "DeletionPolicy": "Delete"
+    }
+  }
+}

packages/@aws-cdk/aws-iot-actions/test/s3/integ.s3-action.ts

@@ -0,0 +1,25 @@
+/// !cdk-integ pragma:ignore-assets
+import * as iot from '@aws-cdk/aws-iot';
+import * as s3 from '@aws-cdk/aws-s3';
+import * as cdk from '@aws-cdk/core';
+import * as actions from '../../lib';
+
+const app = new cdk.App();
+
+class TestStack extends cdk.Stack {
+  constructor(scope: cdk.App, id: string, props?: cdk.StackProps) {
+    super(scope, id, props);
+
+    const topicRule = new iot.TopicRule(this, 'TopicRule', {
+      sql: iot.IotSql.fromStringAsVer20160323("SELECT topic(2) as device_id FROM 'device/+/data'"),
+    });
+
+    const bucket = new s3.Bucket(this, 'MyBucket', {
+      removalPolicy: cdk.RemovalPolicy.DESTROY,
+    });
+    topicRule.addAction(new actions.S3Action(bucket));
+  }
+}
+
+new TestStack(app, 'test-stack');
+app.synth();