Code coverage report for ethereum.js/lib/requestmanager.js

Statements: 52.63% (20 / 38)      Branches: 10% (1 / 10)      Functions: 33.33% (3 / 9)      Lines: 52.63% (20 / 38)      Ignored: none     

All files » ethereum.js/lib/ » requestmanager.js
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/*
    This file is part of ethereum.js.
 
    ethereum.js is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    ethereum.js 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 Lesser General Public License for more details.
 
    You should have received a copy of the GNU Lesser General Public License
    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
*/
/** @file requestmanager.js
 * @authors:
 *   Jeffrey Wilcke <jeff@ethdev.com>
 *   Marek Kotewicz <marek@ethdev.com>
 *   Marian Oancea <marian@ethdev.com>
 *   Gav Wood <g@ethdev.com>
 * @date 2014
 */
 
var jsonrpc = require('./jsonrpc');
var c = require('./const');
 
/**
 * It's responsible for passing messages to providers
 * It's also responsible for polling the ethereum node for incoming messages
 * Default poll timeout is 1 second
 */
var requestManager = function() {
    var polls = [];
    var provider;
 
    var send = function (data) {
        var payload = jsonrpc.toPayload(data.method, data.params);
        
        Eif (!provider) {
            console.error('provider is not set');
            return null;
        }
 
        var result = provider.send(payload);
 
        if (!jsonrpc.isValidResponse(result)) {
            console.log(result);
            return null;
        }
        
        return result.result;
    };
 
    var setProvider = function (p) {
        provider = p;
    };
 
    var startPolling = function (data, pollId, callback, uninstall) {
        polls.push({data: data, id: pollId, callback: callback, uninstall: uninstall});
    };
 
    var stopPolling = function (pollId) {
        for (var i = polls.length; i--;) {
            var poll = polls[i];
            if (poll.id === pollId) {
                polls.splice(i, 1);
            }
        }
    };
 
    var reset = function () {
        polls.forEach(function (poll) {
            poll.uninstall(poll.id); 
        });
        polls = [];
    };
 
    var poll = function () {
        polls.forEach(function (data) {
            var result = send(data.data);
            if (!(result instanceof Array) || result.length === 0) {
                return;
            }
            data.callback(result);
        });
        setTimeout(poll, c.ETH_POLLING_TIMEOUT);
    };
    
    poll();
 
    return {
        send: send,
        setProvider: setProvider,
        startPolling: startPolling,
        stopPolling: stopPolling,
        reset: reset
    };
};
 
module.exports = requestManager;