# Code coverage report for lib/services/server/registration.js

## Statements: 100% (39 / 39) Branches: 91.67% (11 / 12) Functions: 100% (6 / 6) Lines: 100% (39 / 39)

All files » lib/services/server/ » registration.js

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    1/*
     * Copyright 2014 Telefonica Investigación y Desarrollo, S.A.U
     *
     * This file is part of iotagent-lwm2m-lib
     *
     * iotagent-lwm2m-lib is free software: you can redistribute it and/or
     * modify it under the terms of the GNU Affero General Public License as
     * published by the Free Software Foundation, either version 3 of the License,
     * or (at your option) any later version.
     *
     * iotagent-lwm2m-lib is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
     * See the GNU Affero General Public License for more details.
     *
     * You should have received a copy of the GNU Affero General Public
     * License along with iotagent-lwm2m-lib.
     * If not, seehttp://www.gnu.org/licenses/.
     *
     * For those usages not covered by the GNU Affero General Public License
     * please contact with::[contacto@tid.es]
     */

    'use strict';

    var async = require('async'),
        errors = require('../../errors'),
        logger = require('logops'),
        config,
        registry,
        coapUtils = require('./../coapUtils'),
        context = {
            op: 'LWM2MLib.Registration'
        };

    /**
     *  Generates the end of request handler that will generate the final response to the COAP Client.
     */
    function endRegistration(req, res) {
        return function (error, result) {
            if (error) {
                logger.debug(context, 'Registration request ended up in error [%s] with code [%s]', error.name, error.code);

                res.code = error.code;
                res.end(error.name);
            } else {
                var root = (config.baseRoot) ? config.baseRoot : '';

                logger.debug(context, 'Registration request ended successfully');
                res.code = '2.01';
                res.setOption('Location-Path', root + '/rd/' + result[1]);
                res.end('');
            }
        };
    }

    /**
     * Invoke the user handler for this operation, with all the information from the query parameters as its arguments.
     *
     * @param {Object} queryParams      Object containing all the query parameters.
     * @param {Function} handler        User handler to be invoked.
     */
    function applyHandler(queryParams, payload, handler, callback) {
        logger.debug(context, 'Calling user handler for registration actions for device [%s]', queryParams.ep);
        handler(queryParams.ep, queryParams.lt, queryParams.lwm2m, queryParams.b, payload, callback);
    }

    /**
     * Creates the device object to be stored in the registry and stores it.
     *
     * @param {Object} queryParams      Object containing all the query parameters.
     * @param {Object} req              Arriving COAP Request.
     */
    function storeDevice(queryParams, req, callback) {
        var device = {
            name: queryParams.ep,
            lifetime: queryParams.lt,
            address: req.rsinfo.address
        };

        logger.debug(context, 'Storing the following device in the db:\n%s', JSON.stringify(device, null, 4));

        if (req.url.match(/^\/rd\/?.*/)) {
            device.type = config.defaultType;
        } else Eif (config.types) {
            for (var i in config.types) {
                if (req.url.indexOf(config.types[i].url) === 0) {
                    device.type = config.types[i].name;
                }
            }
        }

        if (device.type) {
            logger.debug(context, 'Registered device [%s] with type [%s]', device.name, device.type);
            registry.register(device, callback);
        } else {
            logger.debug(context, 'No type found for device [%s]', device.name);

            callback(new errors.TypeNotFound(req.url));
        }
    }

    /**
     * Handle the registration operation.
     *
     * @param {Object} req          Arriving COAP Request to be handled.
     * @param {Object} res          Outgoing COAP Response.
     * @param {Function} handler    User handler to be executed if everything goes ok.
     */
    function handleRegistration(req, res, handler) {
        var queryParams = coapUtils.extractQueryParams(req);

        logger.debug(context, 'Handling registration request');

        async.series([
            async.apply(coapUtils.checkMandatoryQueryParams, ['ep', 'b', 'lt'], queryParams),
            async.apply(storeDevice, queryParams, req),
            async.apply(applyHandler, queryParams, req.payload.toString(), handler)
        ], endRegistration(req, res));
    }

    function init(newRegistry, newConfig) {
        registry = newRegistry;
        config = newConfig;
    }

    exports.init = init;
    exports.handle = handleRegistration;