@studyportals/sp-r2d2/environment/execution-environments/dynamodb/event-translation/dynamo-db-stream-event-translator.class.js

A framework that contains various components used when developing projects that will be deployed via AWS λ.

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.DynamoDBStreamEventTranslator = void 0;
const util_dynamodb_1 = require("@aws-sdk/util-dynamodb");
const application_1 = require("../../../../application");
const event_translation_error_class_1 = require("../../../core/errors/event-translation-error.class");
class DynamoDBStreamEventTranslator {
    translate(event) {
        return __awaiter(this, void 0, void 0, function* () {
            if (0 === event.Records.length) {
                throw new event_translation_error_class_1.EventTranslationError('No records were found in the event');
            }
            const translatedEvent = {
                Records: [],
            };
            for (const eventRecord of event.Records) {
                const translatedRecord = {
                    eventID: eventRecord.eventID,
                    eventName: eventRecord.eventName,
                };
                const recordBody = eventRecord.dynamodb;
                if (recordBody) {
                    if (recordBody.NewImage || recordBody.OldImage) {
                        const translatedStream = {
                            NewImage: recordBody.NewImage
                                ? (0, util_dynamodb_1.unmarshall)(recordBody.NewImage)
                                : undefined,
                            OldImage: recordBody.OldImage
                                ? (0, util_dynamodb_1.unmarshall)(recordBody.OldImage)
                                : undefined,
                        };
                        translatedRecord.dynamodb = translatedStream;
                    }
                }
                translatedEvent.Records.push(translatedRecord);
            }
            return new application_1.BaseRequest(translatedEvent);
        });
    }
}
exports.DynamoDBStreamEventTranslator = DynamoDBStreamEventTranslator;
//# sourceMappingURL=dynamo-db-stream-event-translator.class.js.map