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AWS CDK sample with Existing S3 bucket and existing SNS topic
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import core = require("@aws-cdk/core"); | |
import lambda = require("@aws-cdk/aws-lambda"); | |
import s3 = require("@aws-cdk/aws-s3"); | |
import sns = require("@aws-cdk/aws-sns"); | |
import sqs = require("@aws-cdk/aws-sqs"); | |
import { SqsEventSource } from "@aws-cdk/aws-lambda-event-sources"; | |
import { SqsSubscription } from "@aws-cdk/aws-sns-subscriptions"; | |
export class ExistingS3BucketAndSNSTopicToLambdaThroughSQS extends core.Construct { | |
constructor(scope: core.Construct, id: string) { | |
super(scope, id); | |
const bucket = s3.Bucket.fromBucketName( | |
this, | |
"ExistingS3Bucket", | |
"bucketName" | |
); | |
const handler = new lambda.Function(this, "lambda", { | |
runtime: lambda.Runtime.NODEJS_10_X, | |
code: lambda.Code.asset("lambda/dist"), | |
handler: "index.main", | |
timeout: core.Duration.seconds(30), | |
environment: { | |
BUCKET_NAME: bucket.bucketName | |
} | |
}); | |
bucket.grantRead(handler); | |
const topic = sns.Topic.fromTopicArn( | |
this, | |
"ExistingSNSTopic", | |
`arn:${core.Aws.PARTITION}:sns:${core.Aws.REGION}:${core.Aws.ACCOUNT_ID}:existing-sns-topic` | |
); | |
const queue = new sqs.Queue(this, "queue"); | |
topic.addSubscription(new SqsSubscription(queue)); | |
handler.addEventSource( | |
new SqsEventSource(queue, { | |
batchSize: 1 | |
}) | |
); | |
} | |
} |
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