@arisan/data-api/lib/routers/mountEventRecorders.js

The Universal Database API Gateway for CLIO's Modules

'use strict';

Object.defineProperty(exports, "__esModule", {
    value: true
});
exports.default = mountEventRecorders;

var _express = require('express');

var _express2 = _interopRequireDefault(_express);

var _mongodb = require('mongodb');

var _mongodb2 = _interopRequireDefault(_mongodb);

var _checkObjectID = require('../middleware/checkObjectID');

var _checkObjectID2 = _interopRequireDefault(_checkObjectID);

var _checkStreamIndex = require('../middleware/checkStreamIndex');

var _checkStreamIndex2 = _interopRequireDefault(_checkStreamIndex);

var _DataAPI = require('../DataAPI');

var _DataAPI2 = _interopRequireDefault(_DataAPI);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

//endregion

const context = {
    router: _express2.default.Router({ mergeParams: true }),
    cameras: null,
    recorders: null,
    logger: null
};
//endregion

//region 2. Project Libraries
//region 1. Platform Libraries


context.router.get('/', _checkObjectID2.default);
context.router.get('/', _checkStreamIndex2.default);
context.router.get('/', (req, res) => {
    const log = (lvl, msg) => context.logger.log(lvl, msg, { tags: `GET ${req.originalUrl}` });
    log('debug', JSON.stringify(req.params, null, 2));
    const triggeringCameraId = new _mongodb2.default.ObjectID(req.params.id);
    const expired = new Date(Date.now() - (_DataAPI2.default.heartbeatInterval + 3) * 1000);
    const findBrokers = {
        cameraIds: [],
        streamIndexes: [],
        activated: [],
        brokers: []
    };
    context.cameras.find({ triggering_camera_id: triggeringCameraId }).forEach(camera => {
        findBrokers.cameraIds.push(camera._id.toHexString());
        findBrokers.streamIndexes.push(camera.active_stream_index);
        findBrokers.activated.push(context.recorders.findOne({
            module: 'broker',
            'stream_infos.id': `${camera._id.toHexString()}/${camera.active_stream_index}`,
            updated: { $gt: expired }
        }, {
            fields: {
                private_ip: 1,
                port: 1
            }
        }));
        findBrokers.brokers.push(null);
    }, findErr => {
        if (findErr) {
            log('error', findErr.message);
            res.status(500).send(findErr.message);
            return;
        }
        Promise.all(findBrokers.activated).then(activatedBrokers => {
            let findCleanBroker = null;
            activatedBrokers.forEach((activatedBroker, arrayIndex) => {
                if (!activatedBroker) {
                    if (findCleanBroker) {
                        return;
                    }
                    findCleanBroker = context.recorders.findOne({
                        module: 'broker',
                        updated: { $gt: expired }
                    }, {
                        fields: {
                            private_ip: 1,
                            port: 1
                        },
                        sort: [['cpu_load', 1]]
                    });
                } else {
                    findBrokers.brokers.splice(arrayIndex, 1, {
                        host: activatedBroker.private_ip,
                        port: activatedBroker.port,
                        cameraId: findBrokers.cameraIds[arrayIndex],
                        streamIndex: findBrokers.streamIndexes[arrayIndex]
                    });
                }
            });
            return findCleanBroker;
        }).then(cleanBroker => {
            findBrokers.cameraIds.forEach((cameraId, arrayIndex) => {
                if (!findBrokers.brokers[arrayIndex]) {
                    findBrokers.brokers.splice(arrayIndex, 1, {
                        host: cleanBroker.private_ip,
                        port: cleanBroker.port,
                        cameraId,
                        streamIndex: findBrokers.streamIndexes[arrayIndex]
                    });
                }
            });
            if (findBrokers.brokers.length === 0) {
                const message = 'Event Brokers Not Found';
                log('error', message);
                res.status(500).send(message);
                return;
            }
            const reply = { recorderInfo: findBrokers.brokers };
            log('debug', JSON.stringify(reply, null, 2));
            log('info', '200 OK');
            res.status(200).send(reply);
        }).catch(err => {
            log('err', err.message);
            res.status(500).send(err.message);
        });
    });
});

//noinspection JSUnusedGlobalSymbols
/**
 * Mount router for /c/:/s/:/event-recorders
 * @param {object}         options          Options
 * @param {object}         options.app      Express App
 * @param {MongoClient.Db} options.database Associated Database
 * @param {winston.Logger} options.logger   Logger
 */
function mountEventRecorders(options) {
    context.logger = options.logger;
    const log = (lvl, msg) => context.logger.log(lvl, msg, { tags: 'mountEventRecorders' });
    log('debug', 'Mounting router for /c/:/s/:/event-recorders....');
    options.app.use('/cameras/:id/streams/:index/event-recorders', context.router);
    context.cameras = options.database.collection('cameras');
    context.recorders = options.database.collection('recorders');
    context.recorders.createIndex({
        module: 1,
        cpu_load: 1,
        updated: 1
    }, { background: true });
    log('info', 'Router for /c/:/s/:/event-recorders Mounted');
}
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