@bitblit/ratchet-epsilon-common
Version:
Tiny adapter to simplify building API gateway Lambda APIS
42 lines • 1.69 kB
JavaScript
import { Logger } from '@bitblit/ratchet-common/logger/logger';
import { AwsUtil } from '../util/aws-util.js';
import { LambdaEventDetector } from '@bitblit/ratchet-aws/lambda/lambda-event-detector';
export class S3EpsilonLambdaEventHandler {
_epsilon;
constructor(_epsilon) {
this._epsilon = _epsilon;
}
extractLabel(evt, _context) {
return 'S3Evt:' + evt.Records[0].eventSource;
}
handlesEvent(evt) {
return LambdaEventDetector.isValidS3Event(evt);
}
async processEvent(evt, _context) {
let rval = null;
if (this._epsilon.config && this._epsilon.config.s3 && evt && evt.Records.length > 0) {
const finder = evt.Records[0].s3.bucket.name + '/' + evt.Records[0].s3.object.key;
const isRemoveEvent = evt.Records[0].eventName && evt.Records[0].eventName.startsWith('ObjectRemoved');
if (isRemoveEvent) {
const handler = AwsUtil.findInMap(finder, this._epsilon.config.s3.removeHandlers);
if (handler) {
rval = await handler(evt);
}
else {
Logger.info('Found no s3 create handler for : %s', finder);
}
}
else {
const handler = AwsUtil.findInMap(finder, this._epsilon.config.s3.createHandlers);
if (handler) {
rval = await handler(evt);
}
else {
Logger.info('Found no s3 remove handler for : %s', finder);
}
}
}
return rval;
}
}
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