@scloud/cdk-patterns
Version:
Serverless CDK patterns for common infrastructure needs
50 lines • 9.01 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.BucketFunction = void 0;
const constructs_1 = require("constructs");
const aws_lambda_event_sources_1 = require("aws-cdk-lib/aws-lambda-event-sources");
const aws_s3_1 = require("aws-cdk-lib/aws-s3");
const PrivateBucket_1 = require("./PrivateBucket");
const ZipFunction_1 = require("./ZipFunction");
const ContainerFunction_1 = require("./ContainerFunction");
/**
* A Lambda function triggered by s3 bucket events.
*
* Defaults for the bucket are as per PrivateBucket:
* - encryption: BucketEncryption.S3_MANAGED
* = blockPublicAccess: BlockPublicAccess.BLOCK_ALL
* - removalPolicy: RemovalPolicy.DESTROY
*
* NB By default, Cloudformation will attempt to destroy the bucket when the stack is destroyed,
* however we don't set auto-delete objects to true, so this will fail if the bucket is not empty,
* which prevents losing content,
*
* The reason for this is that when experimenting with building stacks you can end up with a
* bunch of orphaned resources. This setting effectively protects buckets that have content in them
* But allows for deleting an empty bucket.
*
* If you want to delete the bucket and all contents, pass { autoDeleteObjects: true } in bucketProps.
*/
class BucketFunction extends constructs_1.Construct {
constructor(scope, id, props) {
super(scope, `${id}BucketFunction`);
// Triggering bucket
this.bucket = new PrivateBucket_1.PrivateBucket(scope, `${id}Bucket`, props.bucketProps);
this.lambda = props.lambda;
this.lambda.addEventSource(new aws_lambda_event_sources_1.S3EventSource(this.bucket, { events: props.events || [aws_s3_1.EventType.OBJECT_CREATED] }));
}
static node(scope, id, functionProps, events, bucketProps) {
const lambda = ZipFunction_1.ZipFunction.node(scope, id, functionProps);
return new BucketFunction(scope, id, { lambda, bucketProps, events });
}
static python(scope, id, functionProps, events, bucketProps) {
const lambda = ZipFunction_1.ZipFunction.python(scope, id, functionProps);
return new BucketFunction(scope, id, { lambda, bucketProps, events });
}
static container(scope, id, functionProps, events, bucketProps) {
const lambda = new ContainerFunction_1.ContainerFunction(scope, id, functionProps);
return new BucketFunction(scope, id, { lambda, bucketProps, events });
}
}
exports.BucketFunction = BucketFunction;
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