# aws-iot-lambda-dynamodb module
<!--BEGIN STABILITY BANNER-->---
> All classes are under active development and subject to non-backward compatible changes or removal in any
> future version. These are not subject to the [Semantic Versioning](https://semver.org/) model.
> This means that while you may use them, you may need to update your source code when upgrading to a newer version of this package.
---
<!--END STABILITY BANNER-->
| **Reference Documentation**:| <span style="font-weight: normal">https://docs.aws.amazon.com/solutions/latest/constructs/</span>|
|:-------------|:-------------|
<div style="height:8px"></div>
| **Language** | **Package** |
|:-------------|-----------------|
| Python|`aws_solutions_constructs.aws_iot_lambda_dynamodb`|
| Typescript|`@aws-solutions-constructs/aws-iot-lambda-dynamodb`|
| Java|`software.amazon.awsconstructs.services.iotlambdadynamodb`|
## Overview
This AWS Solutions Construct implements an AWS IoT topic rule, an AWS Lambda function and Amazon DynamoDB table with the least privileged permissions.
Here is a minimal deployable pattern definition:
Typescript
```python
import { Construct } from 'constructs';
import { Stack, StackProps } from 'aws-cdk-lib';
import { IotToLambdaToDynamoDBProps, IotToLambdaToDynamoDB } from '@aws-solutions-constructs/aws-iot-lambda-dynamodb';
import * as lambda from 'aws-cdk-lib/aws-lambda';
const constructProps: IotToLambdaToDynamoDBProps = {
lambdaFunctionProps: {
code: lambda.Code.fromAsset(`lambda`),
runtime: lambda.Runtime.NODEJS_16_X,
handler: 'index.handler'
},
iotTopicRuleProps: {
topicRulePayload: {
ruleDisabled: false,
description: "Processing of DTC messages from the AWS Connected Vehicle Solution.",
sql: "SELECT * FROM 'connectedcar/dtc/#'",
actions: []
}
}
};
new IotToLambdaToDynamoDB(this, 'test-iot-lambda-dynamodb-stack', constructProps);
```
Python
```python
from aws_solutions_constructs.aws_iot_lambda_dynamodb import IotToLambdaToDynamoDB
from aws_cdk import (
aws_iot as iot,
aws_lambda as _lambda,
Stack
)
from constructs import Construct
IotToLambdaToDynamoDB(self, 'test-iot-lambda-dynamodb-stack',
lambda_function_props=_lambda.FunctionProps(
code=_lambda.Code.from_asset('lambda'),
runtime=_lambda.Runtime.PYTHON_3_9,
handler='index.handler'
),
iot_topic_rule_props=iot.CfnTopicRuleProps(
topic_rule_payload=iot.CfnTopicRule.TopicRulePayloadProperty(
rule_disabled=False,
description="Processing of DTC messages from the AWS Connected Vehicle Solution.",
sql="SELECT * FROM 'connectedcar/dtc/#'",
actions=[]
)
))
```
Java
```java
import software.constructs.Construct;
import java.util.List;
import software.amazon.awscdk.Stack;
import software.amazon.awscdk.StackProps;
import software.amazon.awscdk.services.lambda.*;
import software.amazon.awscdk.services.lambda.Runtime;
import software.amazon.awscdk.services.iot.*;
import software.amazon.awscdk.services.iot.CfnTopicRule.TopicRulePayloadProperty;
import software.amazon.awsconstructs.services.iotlambdadynamodb.*;
new IotToLambdaToDynamoDB(this, "test-iot-lambda-dynamodb-stack", new IotToLambdaToDynamoDBProps.Builder()
.lambdaFunctionProps(new FunctionProps.Builder()
.runtime(Runtime.NODEJS_16_X)
.code(Code.fromAsset("lambda"))
.handler("index.handler")
.build())
.iotTopicRuleProps(new CfnTopicRuleProps.Builder()
.topicRulePayload(new TopicRulePayloadProperty.Builder()
.ruleDisabled(false)
.description("Processing of DTC messages from the AWS Connected Vehicle Solution.")
.sql("SELECT * FROM 'connectedcar/dtc/#'")
.actions(List.of())
.build())
.build())
.build());
```
## Pattern Construct Props
| **Name** | **Type** | **Description** |
|:-------------|:----------------|-----------------|
|existingLambdaObj?|[`lambda.Function`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_lambda.Function.html)|Existing instance of Lambda Function object, providing both this and `lambdaFunctionProps` will cause an error.|
|lambdaFunctionProps?|[`lambda.FunctionProps`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_lambda.FunctionProps.html)|User provided props to override the default props for the Lambda function.|
|iotTopicRuleProps|[`iot.CfnTopicRuleProps`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_iot.CfnTopicRuleProps.html)|User provided props to override the default props|
|dynamoTableProps?|[`dynamodb.TableProps`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_dynamodb.TableProps.html)|Optional user provided props to override the default props for DynamoDB Table|
|tablePermissions?|`string`|Optional table permissions to grant to the Lambda function. One of the following may be specified: `All`, `Read`, `ReadWrite`, `Write`.|
|existingTableObj?|[`dynamodb.Table`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_dynamodb.Table.html)|Existing instance of DynamoDB table object, providing both this and `dynamoTableProps` will cause an error.|
|tableEnvironmentVariableName?|`string`|Optional Name for the Lambda function environment variable set to the name of the DynamoDB table. Default: DDB_TABLE_NAME |
|existingVpc?|[`ec2.IVpc`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_ec2.IVpc.html)|An optional, existing VPC into which this pattern should be deployed. When deployed in a VPC, the Lambda function will use ENIs in the VPC to access network resources and a Gateway Endpoint will be created in the VPC for Amazon DynamoDB. If an existing VPC is provided, the `deployVpc` property cannot be `true`. This uses `ec2.IVpc` to allow clients to supply VPCs that exist outside the stack using the [`ec2.Vpc.fromLookup()`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_ec2.Vpc.html#static-fromwbrlookupscope-id-options) method.|
|vpcProps?|[`ec2.VpcProps`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_ec2.VpcProps.html)|Optional user-provided properties to override the default properties for the new VPC. `enableDnsHostnames`, `enableDnsSupport`, `natGateways` and `subnetConfiguration` are set by the pattern, so any values for those properties supplied here will be overridden. If `deployVpc` is not `true` then this property will be ignored.|
|deployVpc?|`boolean`|Whether to create a new VPC based on `vpcProps` into which to deploy this pattern. Setting this to true will deploy the minimal, most private VPC to run the pattern:<ul><li> One isolated subnet in each Availability Zone used by the CDK program</li><li>`enableDnsHostnames` and `enableDnsSupport` will both be set to true</li></ul>If this property is `true` then `existingVpc` cannot be specified. Defaults to `false`.|
## Pattern Properties
| **Name** | **Type** | **Description** |
|:-------------|:----------------|-----------------|
|iotTopicRule|[`iot.CfnTopicRule`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_iot.CfnTopicRule.html)|Returns an instance of iot.CfnTopicRule created by the construct|
|lambdaFunction|[`lambda.Function`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_lambda.Function.html)|Returns an instance of lambda.Function created by the construct|
|dynamoTable|[`dynamodb.Table`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_dynamodb.Table.html)|Returns an instance of dynamodb.Table created by the construct|
|vpc?|[`ec2.IVpc`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_ec2.IVpc.html)|Returns an interface on the VPC used by the pattern (if any). This may be a VPC created by the pattern or the VPC supplied to the pattern constructor.|
## Default settings
Out of the box implementation of the Construct without any override will set the following defaults:
### Amazon IoT Rule
* Configure least privilege access IAM role for Amazon IoT
### AWS Lambda Function
* Configure limited privilege access IAM role for Lambda function
* Enable reusing connections with Keep-Alive for NodeJs Lambda function
* Enable X-Ray Tracing
* Set Environment Variables
* AWS_NODEJS_CONNECTION_REUSE_ENABLED (for Node 10.x and higher functions)
### Amazon DynamoDB Table
* Set the billing mode for DynamoDB Table to On-Demand (Pay per request)
* Enable server-side encryption for DynamoDB Table using AWS managed KMS Key
* Creates a partition key called 'id' for DynamoDB Table
* Retain the Table when deleting the CloudFormation stack
* Enable continuous backups and point-in-time recovery
## Architecture
---
© Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
Raw data
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"description": "# aws-iot-lambda-dynamodb module\n\n<!--BEGIN STABILITY BANNER-->---\n\n\n\n\n> All classes are under active development and subject to non-backward compatible changes or removal in any\n> future version. These are not subject to the [Semantic Versioning](https://semver.org/) model.\n> This means that while you may use them, you may need to update your source code when upgrading to a newer version of this package.\n\n---\n<!--END STABILITY BANNER-->\n\n| **Reference Documentation**:| <span style=\"font-weight: normal\">https://docs.aws.amazon.com/solutions/latest/constructs/</span>|\n|:-------------|:-------------|\n\n<div style=\"height:8px\"></div>\n\n| **Language** | **Package** |\n|:-------------|-----------------|\n| Python|`aws_solutions_constructs.aws_iot_lambda_dynamodb`|\n| Typescript|`@aws-solutions-constructs/aws-iot-lambda-dynamodb`|\n| Java|`software.amazon.awsconstructs.services.iotlambdadynamodb`|\n\n## Overview\n\nThis AWS Solutions Construct implements an AWS IoT topic rule, an AWS Lambda function and Amazon DynamoDB table with the least privileged permissions.\n\nHere is a minimal deployable pattern definition:\n\nTypescript\n\n```python\nimport { Construct } from 'constructs';\nimport { Stack, StackProps } from 'aws-cdk-lib';\nimport { IotToLambdaToDynamoDBProps, IotToLambdaToDynamoDB } from '@aws-solutions-constructs/aws-iot-lambda-dynamodb';\nimport * as lambda from 'aws-cdk-lib/aws-lambda';\n\nconst constructProps: IotToLambdaToDynamoDBProps = {\n lambdaFunctionProps: {\n code: lambda.Code.fromAsset(`lambda`),\n runtime: lambda.Runtime.NODEJS_16_X,\n handler: 'index.handler'\n },\n iotTopicRuleProps: {\n topicRulePayload: {\n ruleDisabled: false,\n description: \"Processing of DTC messages from the AWS Connected Vehicle Solution.\",\n sql: \"SELECT * FROM 'connectedcar/dtc/#'\",\n actions: []\n }\n }\n};\n\nnew IotToLambdaToDynamoDB(this, 'test-iot-lambda-dynamodb-stack', constructProps);\n```\n\nPython\n\n```python\nfrom aws_solutions_constructs.aws_iot_lambda_dynamodb import IotToLambdaToDynamoDB\nfrom aws_cdk import (\n aws_iot as iot,\n aws_lambda as _lambda,\n Stack\n)\nfrom constructs import Construct\n\nIotToLambdaToDynamoDB(self, 'test-iot-lambda-dynamodb-stack',\n lambda_function_props=_lambda.FunctionProps(\n code=_lambda.Code.from_asset('lambda'),\n runtime=_lambda.Runtime.PYTHON_3_9,\n handler='index.handler'\n ),\n iot_topic_rule_props=iot.CfnTopicRuleProps(\n topic_rule_payload=iot.CfnTopicRule.TopicRulePayloadProperty(\n rule_disabled=False,\n description=\"Processing of DTC messages from the AWS Connected Vehicle Solution.\",\n sql=\"SELECT * FROM 'connectedcar/dtc/#'\",\n actions=[]\n )\n ))\n```\n\nJava\n\n```java\nimport software.constructs.Construct;\nimport java.util.List;\n\nimport software.amazon.awscdk.Stack;\nimport software.amazon.awscdk.StackProps;\nimport software.amazon.awscdk.services.lambda.*;\nimport software.amazon.awscdk.services.lambda.Runtime;\nimport software.amazon.awscdk.services.iot.*;\nimport software.amazon.awscdk.services.iot.CfnTopicRule.TopicRulePayloadProperty;\nimport software.amazon.awsconstructs.services.iotlambdadynamodb.*;\n\nnew IotToLambdaToDynamoDB(this, \"test-iot-lambda-dynamodb-stack\", new IotToLambdaToDynamoDBProps.Builder()\n .lambdaFunctionProps(new FunctionProps.Builder()\n .runtime(Runtime.NODEJS_16_X)\n .code(Code.fromAsset(\"lambda\"))\n .handler(\"index.handler\")\n .build())\n .iotTopicRuleProps(new CfnTopicRuleProps.Builder()\n .topicRulePayload(new TopicRulePayloadProperty.Builder()\n .ruleDisabled(false)\n .description(\"Processing of DTC messages from the AWS Connected Vehicle Solution.\")\n .sql(\"SELECT * FROM 'connectedcar/dtc/#'\")\n .actions(List.of())\n .build())\n .build())\n .build());\n```\n\n## Pattern Construct Props\n\n| **Name** | **Type** | **Description** |\n|:-------------|:----------------|-----------------|\n|existingLambdaObj?|[`lambda.Function`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_lambda.Function.html)|Existing instance of Lambda Function object, providing both this and `lambdaFunctionProps` will cause an error.|\n|lambdaFunctionProps?|[`lambda.FunctionProps`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_lambda.FunctionProps.html)|User provided props to override the default props for the Lambda function.|\n|iotTopicRuleProps|[`iot.CfnTopicRuleProps`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_iot.CfnTopicRuleProps.html)|User provided props to override the default props|\n|dynamoTableProps?|[`dynamodb.TableProps`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_dynamodb.TableProps.html)|Optional user provided props to override the default props for DynamoDB Table|\n|tablePermissions?|`string`|Optional table permissions to grant to the Lambda function. One of the following may be specified: `All`, `Read`, `ReadWrite`, `Write`.|\n|existingTableObj?|[`dynamodb.Table`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_dynamodb.Table.html)|Existing instance of DynamoDB table object, providing both this and `dynamoTableProps` will cause an error.|\n|tableEnvironmentVariableName?|`string`|Optional Name for the Lambda function environment variable set to the name of the DynamoDB table. Default: DDB_TABLE_NAME |\n|existingVpc?|[`ec2.IVpc`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_ec2.IVpc.html)|An optional, existing VPC into which this pattern should be deployed. When deployed in a VPC, the Lambda function will use ENIs in the VPC to access network resources and a Gateway Endpoint will be created in the VPC for Amazon DynamoDB. If an existing VPC is provided, the `deployVpc` property cannot be `true`. This uses `ec2.IVpc` to allow clients to supply VPCs that exist outside the stack using the [`ec2.Vpc.fromLookup()`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_ec2.Vpc.html#static-fromwbrlookupscope-id-options) method.|\n|vpcProps?|[`ec2.VpcProps`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_ec2.VpcProps.html)|Optional user-provided properties to override the default properties for the new VPC. `enableDnsHostnames`, `enableDnsSupport`, `natGateways` and `subnetConfiguration` are set by the pattern, so any values for those properties supplied here will be overridden. If `deployVpc` is not `true` then this property will be ignored.|\n|deployVpc?|`boolean`|Whether to create a new VPC based on `vpcProps` into which to deploy this pattern. Setting this to true will deploy the minimal, most private VPC to run the pattern:<ul><li> One isolated subnet in each Availability Zone used by the CDK program</li><li>`enableDnsHostnames` and `enableDnsSupport` will both be set to true</li></ul>If this property is `true` then `existingVpc` cannot be specified. Defaults to `false`.|\n\n## Pattern Properties\n\n| **Name** | **Type** | **Description** |\n|:-------------|:----------------|-----------------|\n|iotTopicRule|[`iot.CfnTopicRule`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_iot.CfnTopicRule.html)|Returns an instance of iot.CfnTopicRule created by the construct|\n|lambdaFunction|[`lambda.Function`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_lambda.Function.html)|Returns an instance of lambda.Function created by the construct|\n|dynamoTable|[`dynamodb.Table`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_dynamodb.Table.html)|Returns an instance of dynamodb.Table created by the construct|\n|vpc?|[`ec2.IVpc`](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_ec2.IVpc.html)|Returns an interface on the VPC used by the pattern (if any). This may be a VPC created by the pattern or the VPC supplied to the pattern constructor.|\n\n## Default settings\n\nOut of the box implementation of the Construct without any override will set the following defaults:\n\n### Amazon IoT Rule\n\n* Configure least privilege access IAM role for Amazon IoT\n\n### AWS Lambda Function\n\n* Configure limited privilege access IAM role for Lambda function\n* Enable reusing connections with Keep-Alive for NodeJs Lambda function\n* Enable X-Ray Tracing\n* Set Environment Variables\n\n * AWS_NODEJS_CONNECTION_REUSE_ENABLED (for Node 10.x and higher functions)\n\n### Amazon DynamoDB Table\n\n* Set the billing mode for DynamoDB Table to On-Demand (Pay per request)\n* Enable server-side encryption for DynamoDB Table using AWS managed KMS Key\n* Creates a partition key called 'id' for DynamoDB Table\n* Retain the Table when deleting the CloudFormation stack\n* Enable continuous backups and point-in-time recovery\n\n## Architecture\n\n\n\n---\n\n\n\u00a9 Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.\n",
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