yandex-cloud-functions-router/dist/routers/messageQueueRouter.js

Node router for Yandex Cloud Functions

"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.messageQueueRouter = void 0;
const routerError_1 = require("../models/routerError");
const log_1 = require("../helpers/log");
const matchObjectPattern_1 = require("../helpers/matchObjectPattern");
const validateQueueId = (context, queueIds, message) => {
    if (queueIds) {
        const result = queueIds.some((queueId) => message.details.queue_id === queueId);
        log_1.debug(context.requestId, `Validating queue id: ${result ? 'valid' : 'invalid'}`, {
            request: message.details.queue_id,
            route: queueIds
        });
        return result;
    }
    else {
        return true;
    }
};
const validateBodyJson = (context, pattern, message) => {
    if (pattern) {
        log_1.debug(context.requestId, 'Validating message body json', { pattern, body: message.details.message.body });
        try {
            const bodyObject = JSON.parse(message.details.message.body);
            const result = matchObjectPattern_1.matchObjectPattern(bodyObject, pattern);
            log_1.debug(context.requestId, 'Validating message body json', { bodyObject, result });
            return result;
        }
        catch (e) {
            log_1.debug(context.requestId, 'Validating message body json failed with error', { error: e });
            if (e instanceof SyntaxError) {
                return false;
            }
            else {
                throw e;
            }
        }
    }
    else {
        return true;
    }
};
const validateBodyPattern = (context, pattern, message) => {
    if (pattern) {
        log_1.debug(context.requestId, 'Validating message body pattern', { pattern, body: message.details.message.body });
        if (message.details.message.body) {
            const result = pattern.test(message.details.message.body);
            log_1.debug(context.requestId, 'Validating message body pattern', { result });
            return result;
        }
        else {
            return false;
        }
    }
    else {
        return true;
    }
};
const validateWithValidators = (validators, event, context, message) => {
    var _a;
    try {
        return validators ? validators.every((validator) => validator(event, context, message)) : true;
    }
    catch (e) {
        log_1.log('WARN', context.requestId, `Validator failed with error: ${((_a = e === null || e === void 0 ? void 0 : e.toString()) !== null && _a !== void 0 ? _a : 'unknown error').replace(/[\r\n]+/g, '')}`, {});
        return false;
    }
};
const messageQueueRouter = (routes, event, message, context) => __awaiter(void 0, void 0, void 0, function* () {
    log_1.debug(context.requestId, 'Message queue processing started', {});
    for (const { queueId, body, validators, handler } of routes) {
        const matched = validateQueueId(context, queueId, message) &&
            validateBodyJson(context, body === null || body === void 0 ? void 0 : body.json, message) &&
            validateBodyPattern(context, body === null || body === void 0 ? void 0 : body.pattern, message);
        log_1.debug(context.requestId, 'Message queue matching completed', { message, matched, queueId: queueId !== null && queueId !== void 0 ? queueId : '', body: body !== null && body !== void 0 ? body : '' });
        if (matched) {
            const validatorsPassed = validateWithValidators(validators, event, context, message);
            log_1.debug(context.requestId, 'Message queue validating completed', { validatorsPassed });
            if (validatorsPassed) {
                const result = handler(event, context, message);
                log_1.debug(context.requestId, 'Message queue processed', {});
                return result instanceof Promise ? result : Promise.resolve(result);
            }
            else {
                log_1.log('WARN', context.requestId, 'Invalid request', {});
                throw new routerError_1.InvalidRequestError('Invalid request.');
            }
        }
    }
    log_1.log('WARN', context.requestId, 'There is no matched route', {});
    throw new routerError_1.NoMatchedRouteError('There is no matched route.');
});
exports.messageQueueRouter = messageQueueRouter;