@faceteer/cdk/handlers/notification-handler.js

CDK 2.0 constructs and helpers that make composing a Lambda powered service easier.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.NotificationHandler = NotificationHandler;
const handler_1 = require("./handler");
function defaultValidator() {
    return undefined;
}
function NotificationHandler(options, handler) {
    const { validator = defaultValidator, ...definition } = options;
    const wrappedHandler = async (event, context, callback) => {
        const notificationEvent = {
            Records: event.Records,
            InvalidMessages: [],
            ValidMessages: [],
        };
        try {
            for (const record of event.Records) {
                try {
                    const validRecord = validator(JSON.parse(record.Sns.Message));
                    notificationEvent.ValidMessages.push({
                        attempts: 0,
                        body: validRecord,
                        messageId: record.Sns.MessageId,
                    });
                }
                catch (error) {
                    notificationEvent.InvalidMessages.push({
                        attempts: 0,
                        body: record.Sns.Message,
                        error,
                        messageId: record.Sns.MessageId,
                    });
                }
            }
            await handler(notificationEvent, context);
        }
        catch (error) {
            callback(error);
        }
    };
    return Object.assign(wrappedHandler, {
        type: handler_1.HandlerTypes.Notification,
        definition: definition,
    });
}