@multicloud/sls-aws/lib/middleware/simpleStorageMiddleware.js

Amazon AWS specific middleware and components for Serverless @multicloud.

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    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) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
const sls_core_1 = require("@multicloud/sls-core");
/**
 * Normalizes S3 messages into a generic records array
 */
exports.SimpleStorageMiddleware = () => (context, next) => __awaiter(this, void 0, void 0, function* () {
    if (context.providerType === "aws") {
        const logger = context.logger || new sls_core_1.ConsoleLogger();
        if (!context.storage) {
            logger.error("Storage API missing from CloudContext. Ensure the CloudStorage middleware has been registered before the SimpleStorageMiddleware");
        }
        const tasks = context.runtime.event.Records.map((message) => __awaiter(this, void 0, void 0, function* () {
            let stream;
            try {
                stream = yield context.storage.read({
                    container: message.s3.bucket.name,
                    path: message.s3.object.key,
                });
            }
            catch (e) {
                logger.warn(`Error reading object, container: ${message.s3.bucket.name}, path: ${message.s3.object.key}`);
                logger.error(e);
                stream = null;
            }
            const cloudMessage = {
                id: `${message.s3.bucket.name}/${message.s3.object.key}`,
                body: stream,
                timestamp: new Date(message.eventTime),
                eventName: message.eventName,
                eventSource: "aws:s3",
            };
            return cloudMessage;
        }));
        const records = yield Promise.all(tasks);
        context.event = { records };
    }
    yield next();
});