init.js

/*
Copyright 2022 AlphaX Projects (alphax.pro)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial
portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

var fs = require('fs');
var path = require('path');
var os = require('os');
var cluster = require('cluster');
var async = require('async');
var CliListener = require('./libs/cliListener.js');
var PoolWorker = require('./libs/poolWorker.js');
var PaymentProcessor = require('./libs/paymentProcessor.js');
var Website = require('./libs/server.js');
var algos = require('stratum-pool/lib/algoProperties.js');
const loggerFactory = require('./libs/logger.js');
const logger = loggerFactory.getLogger('init.js', 'system');
JSON.minify = JSON.minify || require("node-json-minify");

if (!fs.existsSync('config.json')) {
    console.log('config.json file does not exist. Read the installation/setup instructions.');
    return;
}
var portalConfig = JSON.parse(JSON.minify(fs.readFileSync("config.json", { encoding: 'utf8' })));
var poolConfigs;
try {
    var posix = require('posix');
    try {
        posix.setrlimit('nofile', { soft: 100000, hard: 100000 });
    } catch (e) {
        if (cluster.isMaster) {
            logger.warn('POSIX Connection Limit (Safe to ignore) Must be ran as root to increase resource limits');
        }
    }
    finally {
        var uid = parseInt(process.env.SUDO_UID);
        if (uid) {
            process.setuid(uid);
            logger.debug('POSIX Connection Limit Raised to 100K concurrent connections, now running as non-root user: %s', process.getuid());
        }
    }
}
catch (e) {
    if (cluster.isMaster) {
        logger.debug('POSIX Connection Limit (Safe to ignore) POSIX module not installed and resource (connection) limit was not raised');
    }
}
if (cluster.isWorker) {
    switch (process.env.workerType) {
        case 'pool':
            new PoolWorker();
            break;
        case 'paymentProcessor':
            new PaymentProcessor();
            break;
        case 'website':
            new Website();
            break;
    }
    return;
}
var buildPoolConfigs = function () {
    var configs = {};
    var configDir = 'pools/';
    var poolConfigFiles = [];
    fs.readdirSync(configDir).forEach(function (file) {
        if (!fs.existsSync(configDir + file) || path.extname(configDir + file) !== '.json') return;
        var poolOptions = JSON.parse(JSON.minify(fs.readFileSync(configDir + file, { encoding: 'utf8' })));
        if (!poolOptions.enabled) return;
        poolOptions.fileName = file;
        poolConfigFiles.push(poolOptions);
    });
    for (var i = 0; i < poolConfigFiles.length; i++) {
        var ports = Object.keys(poolConfigFiles[i].ports);
        for (var f = 0; f < poolConfigFiles.length; f++) {
            if (f === i) continue;
            var portsF = Object.keys(poolConfigFiles[f].ports);
            for (var g = 0; g < portsF.length; g++) {
                if (ports.indexOf(portsF[g]) !== -1) {
                    logger.error(poolConfigFiles[f].fileName, 'Has same configured port of ' + portsF[g] + ' as ' + poolConfigFiles[i].fileName);
                    process.exit(1);
                    return;
                }
            }
            if (poolConfigFiles[f].coin === poolConfigFiles[i].coin) {
                logger.error(poolConfigFiles[f].fileName, 'Pool has same configured coin file coins/' + poolConfigFiles[f].coin + ' as ' + poolConfigFiles[i].fileName + ' pool');
                process.exit(1);
                return;
            }
        }
    }
    poolConfigFiles.forEach(function (poolOptions) {
        poolOptions.coinFileName = poolOptions.coin;
        var coinFilePath = 'coins/' + poolOptions.coinFileName;
        if (!fs.existsSync(coinFilePath)) {
            logger.error('[%s] could not find file %s ', poolOptions.coinFileName, coinFilePath);
            return;
        }
        var coinProfile = JSON.parse(JSON.minify(fs.readFileSync(coinFilePath, { encoding: 'utf8' })));
        poolOptions.coin = coinProfile;
        poolOptions.coin.name = poolOptions.coin.name.toLowerCase();
        if (poolOptions.coin.name in configs) {
            logger.error('%s coins/' + poolOptions.coinFileName + ' has same configured coin name '
                + poolOptions.coin.name + ' as coins/'
                + configs[poolOptions.coin.name].coinFileName + ' used by pool config '
                + configs[poolOptions.coin.name].fileName, poolOptions.fileName);
            process.exit(1);
            return;
        }
        for (var option in portalConfig.defaultPoolConfigs) {
            if (!(option in poolOptions)) {
                var toCloneOption = portalConfig.defaultPoolConfigs[option];
                var clonedOption = {};
                if (toCloneOption.constructor === Object) {
                    Object.assign(clonedOption, toCloneOption);
                } else {
                    clonedOption = toCloneOption;
                }
                poolOptions[option] = clonedOption;
            }
        }
        configs[poolOptions.coin.name] = poolOptions;
        if (!(coinProfile.algorithm in algos)) {
            logger.error('[%s] Cannot run a pool for unsupported algorithm "' + coinProfile.algorithm + '"', coinProfile.name);
            delete configs[poolOptions.coin.name];
        }
    });
    return configs;
};
var spawnPoolWorkers = function () {
    Object.keys(poolConfigs).forEach(function (coin) {
        var p = poolConfigs[coin];
        if (!Array.isArray(p.daemons) || p.daemons.length < 1) {
            logger.error('[%s] No daemons configured so a pool cannot be started for this coin.', coin);
            delete poolConfigs[coin];
        }
    });
    if (Object.keys(poolConfigs).length === 0) {
        logger.warn('PoolSpawner: No pool configs exists or are enabled in pool_configs folder. No pools spawned.');
        return;
    }
    var serializedConfigs = JSON.stringify(poolConfigs);
    var numForks = (function () {
        if (!portalConfig.clustering || !portalConfig.clustering.enabled) {
            return 1;
        }
        if (portalConfig.clustering.forks === 'auto') {
            return os.cpus().length;
        }
        if (!portalConfig.clustering.forks || isNaN(portalConfig.clustering.forks)) {
            return 1;
        }
        return portalConfig.clustering.forks;
    })();
    var poolWorkers = {};
    var createPoolWorker = function (forkId) {
        var worker = cluster.fork({
            workerType: 'pool',
            forkId: forkId,
            pools: serializedConfigs,
            portalConfig: JSON.stringify(portalConfig)
        });
        worker.forkId = forkId;
        worker.type = 'pool';
        poolWorkers[forkId] = worker;
        worker.on('exit', function (code, signal) {
            logger.error('PoolSpawner: Fork %s died, spawning replacement worker...', forkId);
            setTimeout(function () {
                createPoolWorker(forkId);
            }, 2000);
        }).on('message', function (msg) {
            switch (msg.type) {
                case 'banIP':
                    Object.keys(cluster.workers).forEach(function (id) {
                        if (cluster.workers[id].type === 'pool') {
                            cluster.workers[id].send({ type: 'banIP', ip: msg.ip });
                        }
                    });
                    break;
            }
        });
    };
    var i = 0;
    var spawnInterval = setInterval(function () {
        createPoolWorker(i);
        i++;
        if (i === numForks) {
            clearInterval(spawnInterval);
            logger.debug('Master', 'PoolSpawner', 'Spawned ' + Object.keys(poolConfigs).length + ' pool(s) on ' + numForks + ' thread(s)');
        }
    }, 250);
};
var startPaymentProcessor = function () {
    var enabledForAny = false;
    for (var pool in poolConfigs) {
        var p = poolConfigs[pool];
        var enabled = p.enabled && p.paymentProcessing && p.paymentProcessing.enabled;
        if (enabled) {
            enabledForAny = true;
            break;
        }
    }
    if (!enabledForAny)
        return;
    var worker = cluster.fork({
        workerType: 'paymentProcessor',
        pools: JSON.stringify(poolConfigs)
    });
    worker.on('exit', function (code, signal) {
        logger.error('Master', 'Payment Processor', 'Payment processor died, spawning replacement...');
        setTimeout(function () {
            startPaymentProcessor(poolConfigs);
        }, 2000);
    });
};
var startWebsite = function () {
    if (!portalConfig.website.enabled) return;
    var worker = cluster.fork({
        workerType: 'website',
        pools: JSON.stringify(poolConfigs),
        portalConfig: JSON.stringify(portalConfig)
    });
    worker.on('exit', function (code, signal) {
        logger.error('Master', 'Website', 'Website process died, spawning replacement...');
        setTimeout(function () {
            startWebsite(portalConfig, poolConfigs);
        }, 2000);
    });
};
(function init() {
    poolConfigs = buildPoolConfigs();
    spawnPoolWorkers();
    setTimeout(function () {
        startPaymentProcessor();
        startWebsite();
    }, 2000);
})();