Moved database interactions out of master process into worker processes to avoid IPC overhead

init.js

@@ -86,7 +86,7 @@ if (cluster.isMaster){
 
     for (var i = 0; i < numForks; i++) {
         cluster.fork({
-            fork: i,
+            forkId: i,
             pools: serializedConfigs
         });
     }

libs/mposCompatibility.js

@@ -1,118 +1,80 @@
 var mysql = require('mysql');
 var cluster = require('cluster');
-module.exports = function(logger, poolConfigs){
+module.exports = function(logger, poolConfig){
 
-    var dbConnections = (function(){
+    var mposConfig = poolConfig.shareProcessing.mpos;
-        var connections = {};
+    var coin = poolConfig.coin.name;
 
+    var connection;
 
-        Object.keys(poolConfigs).forEach(function(coin) {
+    function connect(){
-
+        connection = mysql.createConnection({
-            var config = poolConfigs[coin];
+            host: mposConfig.host,
-
+            port: mposConfig.port,
-            if (!config.shareProcessing || !config.shareProcessing.mpos || !config.shareProcessing.mpos.enabled)
+            user: mposConfig.user,
-                return;
+            password: mposConfig.password,
-
+            database: mposConfig.database
-            var mposConfig = config.shareProcessing.mpos;
-
-            function connect(){
-                var connection = connections[coin] = mysql.createConnection({
-                    host: mposConfig.host,
-                    port: mposConfig.port,
-                    user: mposConfig.user,
-                    password: mposConfig.password,
-                    database: mposConfig.database
-                });
-                connection.connect(function(err){
-                    if (err)
-                        logger.logError('shareProcessor', 'mysql', coin +
-                            ' - could not connect to mysql database: ' + JSON.stringify(err))
-                    else{
-                        logger.logDebug('shareProcessor', 'mysql', coin +
-                            ' - successful connection to MySQL database');
-                    }
-                });
-                connection.on('error', function(err){
-                    if(err.code === 'PROTOCOL_CONNECTION_LOST') {
-                        logger.logWarning('shareProcessor', 'mysql', coin +
-                            ' - lost connection to MySQL database, attempting reconnection...');
-                        connect();
-                    }
-                    else{
-                        logger.logError('shareProcessor', 'mysql', coin +
-                            ' - mysql database error: ' + JSON.stringify(err))
-                    }
-                });
-            }
-            connect();
         });
-        return connections;
+        connection.connect(function(err){
-    })();
+            if (err)
+                logger.error('mysql', 'Could not connect to mysql database: ' + JSON.stringify(err))
+            else{
+                logger.debug('mysql', 'Successful connection to MySQL database');
+            }
+        });
+        connection.on('error', function(err){
+            if(err.code === 'PROTOCOL_CONNECTION_LOST') {
+                logger.warning('mysql', 'Lost connection to MySQL database, attempting reconnection...');
+                connect();
+            }
+            else{
+                logger.error('mysql', 'Database error: ' + JSON.stringify(err))
+            }
+        });
+    }
+    connect();
 
+    this.handleAuth = function(workerName, password, authCallback){
 
-    this.handleAuth = function(data){
-        /*
-         type: 'mposAuth',
-         coin: poolOptions.coin.name,
-         callbackId: callbackId,
-         workerId: cluster.worker.id,
-         workerName: workerName,
-         password: password,
-         authLevel: authLevel
-         */
-
-        var sendResult = function(authorized){
-            cluster.workers[data.workerId].send({
-                type       : 'mposAuth',
-                callbackId : data.callbackId,
-                authorized : authorized
-            });
-        };
-
-        var connection = dbConnections[data.coin];
         connection.query(
             'SELECT password FROM pool_worker WHERE username = LOWER(?)',
-            [data.workerName],
+            [workerName],
             function(err, result){
                 if (err){
-                    logger.logError('shareProcessor', 'mysql', 'MySQL error when authenticating worker: ' +
+                    logger.error('mysql', 'Database error when authenticating worker: ' +
                         JSON.stringify(err));
-                    sendResult(false);
+                    authCallback(false);
                 }
                 else if (!result[0])
-                    sendResult(false);
+                    authCallback(false);
                 else if (data.authLevel === 'worker')
-                    sendResult(true);
+                    authCallback(true);
-                else if (result[0].password === data.password)
+                else if (result[0].password === password)
-                    sendResult(true)
+                    authCallback(true)
                 else
-                    sendResult(false);
+                    authCallback(false);
             }
         );
 
     };
 
-    this.handleShare = function(data){
+    this.handleShare = function(isValidShare, isValidBlock, shareData){
-        var isValidShare = data.isValidShare;
-        var isValidBlock = data.isValidBlock;
-        if ((!data.coin in dbConnections)) return;
 
-        var connection = dbConnections[data.coin];
         var dbData = [
-            data.share.ip, 
+            shareData.ip,
-            data.share.worker, 
+            shareData.worker,
             isValidShare ? 'Y' : 'N', 
-            isValidBlock ? 'Y' : 'N', 
+            isValidBlock ? 'Y' : 'N',
-            data.share.difficulty, 
+            shareData.difficulty,
-            typeof(data.share.error)==='undefined'?null:data.share.error, 
+            typeof(shareData.error) === 'undefined' ? null : shareData.error,
-            typeof(data.solution)==='undefined'?'':data.solution // solution?
+            typeof(shareData.solution) === 'undefined' ? null : shareData.solution
         ];
         connection.query(
             'INSERT INTO `shares` SET time = NOW(), rem_host = ?, username = ?, our_result = ?, upstream_result = ?, difficulty = ?, reason = ?, solution = ?',
             dbData,
             function(err, result) {
                 if (err)
-                    logger.logError('shareProcessor', 'mysql', 'MySQL insert error when adding share: ' +
+                    logger.error('mysql', 'Insert error when adding share: ' +
                         JSON.stringify(err));
             }
         );
@@ -120,14 +82,11 @@ module.exports = function(logger, poolConfigs){
 
     this.handleDifficultyUpdate = function(workerName, diff){
 
-        if ((!data.coin in dbConnections)) return;
-
-        var connection = dbConnections[data.coin];
         connection.query(
             'UPDATE `pool_worker` SET `difficulty` = ' + diff + ' WHERE `username` = ' + connection.escape(workerName),
             function(err, result){
                 if (err)
-                    logger.logError('shareProcessor', 'mysql', 'MySQL error when updating worker diff: ' +
+                    logger.error('mysql', 'Error when updating worker diff: ' +
                         JSON.stringify(err));
                 else if (result.affectedRows === 0){
                     connection.query('INSERT INTO `pool_worker` SET ?', {username: workerName, difficulty: diff});

libs/poolWorker.js

@@ -2,148 +2,135 @@ var cluster = require('cluster');
 
 var Stratum = require('stratum-pool');
 
+var MposCompatibility = require('./mposCompatibility.js');
+var ShareProcessor = require('./shareProcessor.js');
+
 module.exports = function(logger){
 
 
-    var logDebug   = logger.logDebug;
-    var logWarning = logger.logWarning;
-    var logError   = logger.logError;
-
-
     var poolConfigs = JSON.parse(process.env.pools);
-    var fork = process.env.fork;
+    var forkId = process.env.forkId;
 
-    var pools = [];
+    var pools = {};
 
     //Handle messages from master process sent via IPC
     process.on('message', function(message) {
         switch(message.type){
             case 'blocknotify':
-                for (var i = 0; i < pools.length; i++){
+                var pool = pools[message.coin.toLowerCase()]
-                    if (pools[i].options.coin.name.toLowerCase() === message.coin.toLowerCase()){
+                if (pool) pool.processBlockNotify(message.hash)
-                        pools[i].processBlockNotify(message.hash)
-                        return;
-                    }
-                }
-                break;
-            case 'mposAuth':
-                var callbackId = message.callbackId;
-                if (callbackId in mposAuthCallbacks) {
-                    mposAuthCallbacks[callbackId](message.authorized);
-                }
                 break;
         }
     });
 
 
-    var mposAuthCallbacks = {};
-
     Object.keys(poolConfigs).forEach(function(coin) {
 
         var poolOptions = poolConfigs[coin];
 
-        var logIdentify = coin + ' (Fork ' + fork + ')';
+        var logIdentify = coin + ' (Fork ' + forkId + ')';
 
-        var authorizeFN = function (ip, workerName, password, callback) {
+        var poolLogger = {
-            // Default implementation just returns true
+            debug: function(key, text){
-            logDebug(logIdentify, 'client', "Authorize [" + ip + "] " + workerName + ":" + password);
+                logger.logDebug(logIdentify, key, text);
-
+            },
-            var mposAuthLevel;
+            warning: function(key, text){
-            if (poolOptions.shareProcessing.mpos.enabled && (
+                logger.logWarning(logIdentify, key, text);
-                (mposAuthLevel = poolOptions.shareProcessing.mpos.stratumAuth) === 'worker' ||
+            },
-                    mposAuthLevel === 'password'
+            error: function(key, text){
-            )){
+                logger.logError(logIdentify, key, text);
-                var callbackId = coin + workerName + password + Date.now();
-                var authTimeout = setTimeout(function(){
-                    if (!(callbackId in mposAuthCallbacks))
-                        return;
-                    callback({
-                        error: null,
-                        authorized: false,
-                        disconnect: false
-                    });
-                    delete mposAuthCallbacks[callbackId];
-                }, 30000);
-                mposAuthCallbacks[callbackId] = function(authorized){
-                    callback({
-                        error: null,
-                        authorized: authorized,
-                        disconnect: false
-                    });
-                    delete mposAuthCallbacks[callbackId];
-                    clearTimeout(authTimeout);
-                };
-                process.send({
-                    type       : 'mposAuth',
-                    coin       : poolOptions.coin.name,
-                    callbackId : callbackId,
-                    workerId   : cluster.worker.id,
-                    workerName : workerName,
-                    password   : password,
-                    authLevel  : mposAuthLevel
-                });
             }
-            else{
+        };
-                // if we're here than it means we're on stratumAuth: "none" or something unrecognized by the system!
+
-                callback({
+        var handlers = {
+            auth: function(){},
+            share: function(){},
+            diff: function(){}
+        };
+
+        var shareProcessing = poolOptions.shareProcessing;
+
+        //Functions required for MPOS compatibility
+        if (shareProcessing.mpos && shareProcessing.mpos.enabled){
+            var mposCompat = new MposCompatibility(poolLogger, poolOptions)
+
+            handlers.auth = function(workerName, password, authCallback){
+                mposCompat.handleAuth(workerName, password, authCallback);
+            };
+
+            handlers.share = function(isValidShare, isValidBlock, data){
+                mposCompat.handleShare(isValidShare, isValidBlock, data);
+            };
+
+            handlers.diff = function(workerName, diff){
+                mposCompat.handleDifficultyUpdate(workerName, diff);
+            }
+        }
+
+        //Functions required for internal payment processing
+        else if (shareProcessing.internal && shareProcessing.internal.enabled){
+
+            var shareProcessor = new ShareProcessor(poolLogger, poolOptions)
+
+            handlers.auth = function(workerName, password, authCallback){
+                authCallback({
                     error: null,
                     authorized: true,
                     disconnect: false
                 });
-            }
+            };
+
+            handlers.share = function(isValidShare, isValidBlock, data){
+                shareProcessor.handleShare(isValidShare, isValidBlock, data);
+            };
+        }
+
+        var authorizeFN = function (ip, workerName, password, callback) {
+            handlers.auth(workerName, password, function(authorized){
+
+                var authString = authorized ? 'Authorized' : 'Unauthorized ';
+
+                poolLogger.debug('client', authorized + ' [' + ip + '] ' + workerName + ':' + password);
+                callback({
+                    error: null,
+                    authorized: authorized,
+                    disconnect: false
+                });
+            });
         };
 
 
         var pool = Stratum.createPool(poolOptions, authorizeFN);
-        pool.on('share', function(isValidShare, isValidBlock, data, blockHex){
+        pool.on('share', function(isValidShare, isValidBlock, data){
 
             var shareData = JSON.stringify(data);
 
-            if (data.solution && !isValidBlock){
+            if (data.solution && !isValidBlock)
-                logDebug(logIdentify, 'client', 'We thought a block solution was found but it was rejected by the daemon, share data: ' + shareData);
+                poolLogger.debug('client', 'We thought a block solution was found but it was rejected by the daemon, share data: ' + shareData);
-            }
+            else if (isValidBlock)
-            else if (!isValidShare){
+                poolLogger.debug('client', 'Block found, solution: ' + shareData.solution);
-                logDebug(logIdentify, 'client', 'Invalid share submitted, share data: ' + shareData)
-            }
 
-            logDebug(logIdentify, 'client', 'Valid share submitted, share data: ' + shareData);
+            if (isValidShare)
-            process.send({
+                poolLogger.debug('client', 'Valid share submitted, share data: ' + shareData);
-                type         : 'share',
+            else if (!isValidShare)
-                share        : data,
+                poolLogger.debug('client', 'Invalid share submitted, share data: ' + shareData)
-                coin         : poolOptions.coin.name,
+
-                isValidShare : isValidShare,
+
-                isValidBlock : isValidBlock,
+            handlers.share(isValidShare, isValidBlock, data)
-                solution     : blockHex // blockHex is undefined is this was not a valid block.
-            });
 
-            if (isValidBlock){
-                logDebug(logIdentify, 'client', 'Block found, solution: ' + shareData.solution);
-                process.send({
-                    type  : 'block',
-                    share : data,
-                    coin  : poolOptions.coin.name
-                });
-            }
 
         }).on('difficultyUpdate', function(workerName, diff){
-            if (poolOptions.shareProcessing.mpos.enabled){
+            handlers.diff(workerName, diff);
-                process.send({
-                    type       : 'difficultyUpdate',
-                    workerName : workerName,
-                    diff       : diff,
-                    coin       : poolOptions.coin.name
-                });
-            }
         }).on('log', function(severity, logKey, logText) {
             if (severity == 'debug') {
-                logDebug(logIdentify, logKey, logText);
+                poolLogger.debug(logKey, logText);
             } else if (severity == 'warning') {
-                logWarning(logIdentify, logKey, logText);
+                poolLogger.warning(logKey, logText);
             } else if (severity == 'error') {
-                logError(logIdentify, logKey, logText);
+                poolLogger.error(logKey, logText);
             }
         });
         pool.start();
-        pools.push(pool);
+        pools[poolOptions.coin.name.toLowerCase()] = pool;
     });
 };

libs/shareProcessor.js

@@ -1,61 +1,37 @@
 var redis = require('redis');
 
-module.exports = function(logger, poolConfigs){
+module.exports = function(logger, poolConfig){
 
+    var redisConfig = poolConfig.shareProcessing.internal.redis;
+    var coin = poolConfig.coin.name;
 
-    var dbConnections = (function(){
+    var connection;
-        var connections = {};
-        Object.keys(poolConfigs).forEach(function(coin) {
 
-            var config = poolConfigs[coin];
+    function connect(){
-
+        var connection = connections[coin] = redis.createClient(redisConfig.port, redisConfig.host);
-            if (!config.shareProcessing || !config.shareProcessing.internal || !config.shareProcessing.internal.enabled)
+        connection.on('error', function(err){
-                return;
+            logger.error('redis', 'Redis client had an error: ' + JSON.stringify(err))
-
+        });
-            var redisConfig = config.shareProcessing.internal.redis;
+        connection.on('end', function(){
-
+            logger.warning('redis', 'Connection to redis database as been ended');
-            function connect(){
-                var connection = connections[coin] = redis.createClient(redisConfig.port, redisConfig.host);
-                connection.on('error', function(err){
-                    logger.logError('shareProcessor', 'redis', coin +
-                        ' - redis client had an error: ' + JSON.stringify(err))
-                });
-                connection.on('end', function(){
-                    logger.logWarning('shareProcessor', 'redis', coin +
-                        ' - connection to redis database as been ended');
-                    connect();
-                });
-            }
             connect();
         });
-    })();
+    }
+    connect();
 
 
-    this.handleDifficultyUpdate = function(data){
-        var coin = data.coin;
-        var poolConfig = poolConfigs[coin];
-    };
 
-    this.handleShare = function(data){
 
-        if ((!data.coin in dbConnections)) return;
+    this.handleShare = function(isValidShare, isValidBlock, shareData){
 
-        if (!data.isValidShare) return;
 
-        var connection = dbConnections[data.coin];
+        if (!isValidShare) return;
-
-        var shareData = data.share;
-        var coin = data.coin;
-        var poolConfig = poolConfigs[coin];
 
         connection.hincrby([coin + ':' + shareData.height, shareData.worker, shareData.difficulty], function(error, result){
             if (error)
-                logger.logError('shareProcessor', 'redis', 'could not store worker share')
+                logger.error('redis', 'Could not store worker share')
         });
 
     };
 
-    this.handleBlock = function(data){
-        //
-    };
 };

libs/workerListener.js

@@ -10,35 +10,12 @@ var processor = module.exports = function processor(logger, poolConfigs){
     var _this = this;
 
 
-    var mposCompat = new MposCompatibility(logger, poolConfigs);
-    var shareProcessor = new ShareProcessor(logger, poolConfigs);
-
-
     this.init = function(){
 
         Object.keys(cluster.workers).forEach(function(id) {
             cluster.workers[id].on('message', function(data){
-
-                var shareProcessing = poolConfigs[data.coin].shareProcessing;
-
                 switch(data.type){
-                    case 'share':
+
-                        if (shareProcessing.internal.enabled)
-                            shareProcessor.handleShare(data);
-                        if (shareProcessing.mpos.enabled)
-                            mposCompat.handleShare(data);
-                        break;
-                    case 'difficultyUpdate':
-                        if (shareProcessing.mpos.enabled)
-                            mposCompat.handleDifficultyUpdate(data);
-                        break;
-                    case 'block':
-                        if (shareProcessing.internal.enabled)
-                            shareProcessor.handleBlock(data);
-                        break;
-                    case 'mposAuth':
-                        mposCompat.handleAuth(data);
-                        break;
                 }
             });
         });