@aws-solutions-constructs/aws-lambda-kinesisstreams

aws-lambda-kinesisstreams module

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Reference Documentation:	https://docs.aws.amazon.com/solutions/latest/constructs/

Language	Package
Python	aws_solutions_constructs.aws_lambda_kinesis_stream
Typescript	@aws-solutions-constructs/aws-lambda-kinesisstreams
Java	software.amazon.awsconstructs.services.lambdakinesisstreams

Overview

This AWS Solutions Construct deploys an AWS Lambda Function that can put records on an Amazon Kinesis Data Stream.

Here is a minimal deployable pattern definition:

Typescript

import { Construct } from 'constructs';
import { Stack, StackProps } from 'aws-cdk-lib';
import { LambdaToKinesisStreamsProps } from '@aws-solutions-constructs/aws-lambda-kinesisstreams';
import * as lambda from 'aws-cdk-lib/aws-lambda';

new LambdaToKinesisStreams(this, 'LambdaToKinesisStreams', {
  lambdaFunctionProps: {
    runtime: lambda.Runtime.NODEJS_18_X,
    handler: 'index.handler',
    code: lambda.Code.fromAsset(`lambda`)
  }
});

Python

from aws_solutions_constructs.aws_lambda_kinesis_stream import LambdaToKinesisStreams
from aws_cdk import (
    aws_lambda as _lambda,
    aws_kinesis as kinesis,
    Stack
)
from constructs import Construct

LambdaToKinesisStreams(self, 'LambdaToKinesisStreams',
                        lambda_function_props=_lambda.FunctionProps(
                          runtime=_lambda.Runtime.PYTHON_3_9,
                          handler='index.handler',
                          code=_lambda.Code.from_asset('lambda')
                        )
                      )

Java

import software.constructs.Construct;

import software.amazon.awscdk.Stack;
import software.amazon.awscdk.StackProps;
import software.amazon.awscdk.services.lambda.*;
import software.amazon.awscdk.services.lambda.eventsources.*;
import software.amazon.awscdk.services.lambda.Runtime;
import software.amazon.awsconstructs.services.lambdakinesisstreams.*;

new LambdaToKinesisStreams(this, "LambdaToKinesisStreams", new LambdaToKinesisStreamsProps.Builder()
        .lambdaFunctionProps(new FunctionProps.Builder()
                .runtime(Runtime.NODEJS_18_X)
                .code(Code.fromAsset("lambda"))
                .handler("index.handler")
                .build())
        .build());

Pattern Construct Props

Name	Type	Description
existingLambdaObj?	lambda.Function	Existing instance of a Lambda Function object, providing both this and lambdaFunctionProps will cause an error.
lambdaFunctionProps?	lambda.FunctionProps	User provided props to override the default props for the Lambda Function.
existingStreamObj?	kinesis.Stream	Existing instance of a Kinesis Data Stream, providing both this and kinesisStreamProps will cause an error.
kinesisStreamProps?	kinesis.StreamProps	Optional user-provided props to override the default props for the Kinesis Data Stream.
createCloudWatchAlarms	boolean	Whether to create recommended CloudWatch Alarms (defaults to true).
existingVpc?	ec2.IVpc	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 an Interface Endpoint will be created in the VPC for Amazon Kinesis Streams. 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() method.
vpcProps?	ec2.VpcProps	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: One isolated subnet in each Availability Zone used by the CDK program enableDnsHostnames and enableDnsSupport will both be set to true If this property is true then existingVpc cannot be specified. Defaults to false.
streamEnvironmentVariableName?	string	Optional Name to override the Lambda Function default environment variable name that holds the Kinesis Data Stream name value. Default: KINESIS_DATASTREAM_NAME

Pattern Properties

Name	Type	Description
lambdaFunction	lambda.Function	Returns an instance of the Lambda Function.
kinesisStream	kinesis.Stream	Returns an instance of the Kinesis Data Stream.
cloudwatchAlarms?	cloudwatch.Alarm[]	Returns the CloudWatch Alarms created to monitor the Kinesis Data Stream.
vpc?	ec2.IVpc	Returns an interface to 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 overrides will set the following defaults:

AWS Lambda Function

• Minimally-permissive IAM role for the Lambda Function to put records on the Kinesis Data Stream
• Enable X-Ray Tracing
• Sets an Environment Variable named KINESIS_DATASTREAM_NAME that holds the Kinesis Data Stream Name, which is a required property Kinesis Data Streams SDK when making calls to it

Amazon Kinesis Stream

• Enable server-side encryption for the Kinesis Data Stream using AWS Managed CMK
• Deploy best practices CloudWatch Alarms for the Kinesis Data Stream

Architecture

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