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24 24 24 12 24 16 8 4 13 396 352 352 44 13 96 24 24 24 24 72 72 72 12 60 60 13 216 216 16 200 8 192 40 4 40 40 40 2076 40 152 13 88 88 24 8 24 64 16 8 16 48 32 16 32 32 32 80 80 32 8 16 16 88 88 13 11134 11134 11134 308 104 308 308 13 12 8 4 13 375 375 375 375 375 375 375 375 375 10759 10759 10759 220 10539 10759 36 10723 10477 246 246 460 20 20 10759 375 375 375 375 375 13 375 375 64 64 64 28 36 4 64 311 303 10451 32 32 24 32 10419 10406 10350 10406 20 10451 104 4 100 10451 311 307 13 304 304 304 12 292 304 108 13 124 124 124 124 124 28 24 24 28 96 96 96 92 92 92 96 304 304 304 108 196 304 92 304 304 96 96 96 13 1998 1612 1612 1612 386 200 200 200 36 12 36 4 32 32 164 186 182 182 1994 4 1990 13 13 13 13 | 'use strict'; var net = require('net'); var tls = require('tls'); var URL = require('url'); var util = require('util'); var utils = require('./lib/utils'); var Queue = require('double-ended-queue'); var Command = require('./lib/command'); var events = require('events'); var parsers = []; var commands = require('redis-commands'); var connection_id = 0; var default_port = 6379; var default_host = '127.0.0.1'; function noop () {} function clone (obj) { return JSON.parse(JSON.stringify(obj || {})); } function debug (msg) { if (exports.debug_mode) { console.error(msg); } } exports.debug_mode = /\bredis\b/i.test(process.env.NODE_DEBUG); // Hiredis might not be installed try { parsers.push(require('./lib/parsers/hiredis')); } catch (err) { /* istanbul ignore next: won't be reached with tests */ debug('Hiredis parser not installed.'); } parsers.push(require('./lib/parsers/javascript')); function RedisClient (options) { // Copy the options so they are not mutated options = clone(options); events.EventEmitter.call(this); var cnx_options = {}; if (options.path) { cnx_options.path = options.path; this.address = options.path; } else { cnx_options.port = +options.port || default_port; cnx_options.host = options.host || default_host; cnx_options.family = (!options.family && net.isIP(cnx_options.host)) || (options.family === 'IPv6' ? 6 : 4); this.address = cnx_options.host + ':' + cnx_options.port; } /* istanbul ignore next: travis does not work with stunnel atm. Therefor the tls tests are skipped on travis */ for (var tls_option in options.tls) { // jshint ignore: line cnx_options[tls_option] = options.tls[tls_option]; } this.connection_options = cnx_options; this.connection_id = ++connection_id; this.connected = false; this.ready = false; this.connections = 0; if (options.socket_nodelay === undefined) { options.socket_nodelay = true; } if (options.socket_keepalive === undefined) { options.socket_keepalive = true; } for (var command in options.rename_commands) { // jshint ignore: line options.rename_commands[command.toLowerCase()] = options.rename_commands[command]; } options.return_buffers = !!options.return_buffers; options.detect_buffers = !!options.detect_buffers; // Override the detect_buffers setting if return_buffers is active and print a warning if (options.return_buffers && options.detect_buffers) { console.warn('>> WARNING: You activated return_buffers and detect_buffers at the same time. The return value is always going to be a buffer.'); options.detect_buffers = false; } this.should_buffer = false; this.max_attempts = options.max_attempts | 0; this.command_queue = new Queue(); // Holds sent commands to de-pipeline them this.offline_queue = new Queue(); // Holds commands issued but not able to be sent this.connect_timeout = +options.connect_timeout || 3600000; // 60 * 60 * 1000 ms this.enable_offline_queue = options.enable_offline_queue === false ? false : true; this.retry_max_delay = +options.retry_max_delay || null; this.initialize_retry_vars(); this.pub_sub_mode = false; this.subscription_set = {}; this.monitoring = false; this.closing = false; this.server_info = {}; this.auth_pass = options.auth_pass; this.parser_module = null; this.selected_db = null; // Save the selected db here, used when reconnecting this.old_state = null; this.pipeline = 0; this.options = options; // Init parser once per instance this.init_parser(); this.create_stream(); } util.inherits(RedisClient, events.EventEmitter); // Attention: the function name "create_stream" should not be changed, as other libraries need this to mock the stream (e.g. fakeredis) RedisClient.prototype.create_stream = function () { var self = this; // On a reconnect destroy the former stream and retry if (this.stream) { this.stream.removeAllListeners(); this.stream.destroy(); } /* istanbul ignore if: travis does not work with stunnel atm. Therefor the tls tests are skipped on travis */ if (this.options.tls) { this.stream = tls.connect(this.connection_options); } else { this.stream = net.createConnection(this.connection_options); } if (this.options.connect_timeout) { this.stream.setTimeout(this.connect_timeout, function () { self.retry_totaltime = self.connect_timeout; self.connection_gone('timeout'); }); } /* istanbul ignore next: travis does not work with stunnel atm. Therefor the tls tests are skipped on travis */ var connect_event = this.options.tls ? "secureConnect" : "connect"; this.stream.once(connect_event, function () { this.removeAllListeners("timeout"); self.on_connect(); }); this.stream.on('data', function (buffer_from_socket) { // The buffer_from_socket.toString() has a significant impact on big chunks and therefor this should only be used if necessary debug('Net read ' + self.address + ' id ' + self.connection_id); // + ': ' + buffer_from_socket.toString()); self.reply_parser.execute(buffer_from_socket); }); this.stream.on('error', function (err) { self.on_error(err); }); /* istanbul ignore next: travis does not work with stunnel atm. Therefor the tls tests are skipped on travis */ this.stream.on('clientError', function (err) { self.on_error(err); }); this.stream.once('close', function () { self.connection_gone('close'); }); this.stream.once('end', function () { self.connection_gone('end'); }); this.stream.on('drain', function () { self.drain(); }); }; RedisClient.prototype.cork = noop; RedisClient.prototype.uncork = noop; RedisClient.prototype.duplicate = function (options) { var existing_options = clone(this.options); options = clone(options); for (var elem in options) { // jshint ignore: line existing_options[elem] = options[elem]; } var client = new RedisClient(existing_options); client.selected_db = this.selected_db; return client; }; RedisClient.prototype.initialize_retry_vars = function () { this.retry_timer = null; this.retry_totaltime = 0; this.retry_delay = 200; this.retry_backoff = 1.7; this.attempts = 1; }; RedisClient.prototype.unref = function () { if (this.connected) { debug("Unref'ing the socket connection"); this.stream.unref(); } else { debug('Not connected yet, will unref later'); this.once('connect', function () { this.unref(); }); } }; // Flush provided queues, erroring any items with a callback first RedisClient.prototype.flush_and_error = function (error, queue_names) { var command_obj; queue_names = queue_names || ['offline_queue', 'command_queue']; for (var i = 0; i < queue_names.length; i++) { while (command_obj = this[queue_names[i]].shift()) { if (typeof command_obj.callback === 'function') { error.command = command_obj.command.toUpperCase(); command_obj.callback(error); } } this[queue_names[i]] = new Queue(); } }; RedisClient.prototype.on_error = function (err) { if (this.closing) { return; } err.message = 'Redis connection to ' + this.address + ' failed - ' + err.message; debug(err.message); this.connected = false; this.ready = false; this.emit('error', err); // 'error' events get turned into exceptions if they aren't listened for. If the user handled this error // then we should try to reconnect. this.connection_gone('error'); }; var noPasswordIsSet = /no password is set/; var loading = /LOADING/; RedisClient.prototype.do_auth = function () { var self = this; debug('Sending auth to ' + self.address + ' id ' + self.connection_id); self.send_anyway = true; self.send_command('auth', [this.auth_pass], function (err, res) { if (err) { /* istanbul ignore if: this is almost impossible to test */ Iif (loading.test(err.message)) { // If redis is still loading the db, it will not authenticate and everything else will fail debug('Redis still loading, trying to authenticate later'); setTimeout(function () { self.do_auth(); }, 333); return; } else if (noPasswordIsSet.test(err.message)) { debug('Warning: Redis server does not require a password, but a password was supplied.'); err = null; res = 'OK'; } else if (self.auth_callback) { self.auth_callback(err); self.auth_callback = null; return; } else { self.emit('error', err); return; } } res = res.toString(); debug('Auth succeeded ' + self.address + ' id ' + self.connection_id); if (self.auth_callback) { self.auth_callback(null, res); self.auth_callback = null; } // Now we are really connected self.emit('connect'); self.initialize_retry_vars(); if (self.options.no_ready_check) { self.on_ready(); } else { self.ready_check(); } }); self.send_anyway = false; }; RedisClient.prototype.on_connect = function () { debug('Stream connected ' + this.address + ' id ' + this.connection_id); this.connected = true; this.ready = false; this.connections += 1; this.emitted_end = false; if (this.options.socket_nodelay) { this.stream.setNoDelay(); } this.stream.setKeepAlive(this.options.socket_keepalive); this.stream.setTimeout(0); if (typeof this.auth_pass === 'string') { this.do_auth(); } else { this.emit('connect'); this.initialize_retry_vars(); if (this.options.no_ready_check) { this.on_ready(); } else { this.ready_check(); } } }; RedisClient.prototype.init_parser = function () { var self = this; if (this.options.parser) { if (!parsers.some(function (parser) { if (parser.name === self.options.parser) { self.parser_module = parser; debug('Using parser module: ' + self.parser_module.name); return true; } })) { // Do not emit this error // This should take down the app if anyone made such a huge mistake or should somehow be handled in user code throw new Error("Couldn't find named parser " + self.options.parser + " on this system"); } } else { debug('Using default parser module: ' + parsers[0].name); this.parser_module = parsers[0]; } // return_buffers sends back Buffers from parser to callback. detect_buffers sends back Buffers from parser, but // converts to Strings if the input arguments are not Buffers. this.reply_parser = new this.parser_module.Parser(self.options.return_buffers || self.options.detect_buffers); // Important: Only send results / errors async. // That way the result / error won't stay in a try catch block and catch user things this.reply_parser.send_error = function (data) { self.return_error(data); }; this.reply_parser.send_reply = function (data) { self.return_reply(data); }; }; RedisClient.prototype.on_ready = function () { var self = this; this.ready = true; if (this.old_state !== null) { this.monitoring = this.old_state.monitoring; this.pub_sub_mode = this.old_state.pub_sub_mode; this.selected_db = this.old_state.selected_db; this.old_state = null; } var cork; if (!this.stream.cork) { I cork = function (len) { self.pipeline = len; self.pipeline_queue = new Queue(len); }; } else { cork = function (len) { self.pipeline = len; self.pipeline_queue = new Queue(len); self.stream.cork(); }; this.uncork = function () { self.stream.uncork(); }; } this.cork = cork; // magically restore any modal commands from a previous connection if (this.selected_db !== null) { // this trick works if and only if the following send_command // never goes into the offline queue var pub_sub_mode = this.pub_sub_mode; this.pub_sub_mode = false; this.send_command('select', [this.selected_db]); this.pub_sub_mode = pub_sub_mode; } if (this.pub_sub_mode === true) { // only emit 'ready' when all subscriptions were made again var callback_count = 0; var callback = function () { callback_count--; if (callback_count === 0) { self.emit('ready'); } }; if (this.options.disable_resubscribing) { return; } Object.keys(this.subscription_set).forEach(function (key) { var space_index = key.indexOf(' '); var parts = [key.slice(0, space_index), key.slice(space_index + 1)]; debug('Sending pub/sub on_ready ' + parts[0] + ', ' + parts[1]); callback_count++; self.send_command(parts[0] + 'scribe', [parts[1]], callback); }); return; } if (this.monitoring) { this.send_command('monitor', []); } else { this.send_offline_queue(); } this.emit('ready'); }; RedisClient.prototype.on_info_cmd = function (err, res) { if (err) { if (err.message === "ERR unknown command 'info'") { this.server_info = {}; this.on_ready(); return; } else { err.message = 'Ready check failed: ' + err.message; this.emit('error', err); return; } } /* istanbul ignore if: some servers might not respond with any info data. This is just a safety check that is difficult to test */ if (!res) { I debug('The info command returned without any data.'); this.server_info = {}; this.on_ready(); return; } var obj = {}; var lines = res.toString().split('\r\n'); var i = 0; var key = 'db' + i; var line, retry_time, parts, sub_parts; for (i = 0; i < lines.length; i++) { parts = lines[i].split(':'); if (parts[1]) { obj[parts[0]] = parts[1]; } } obj.versions = []; /* istanbul ignore else: some redis servers do not send the version */ if (obj.redis_version) { E obj.redis_version.split('.').forEach(function (num) { obj.versions.push(+num); }); } while (obj[key]) { parts = obj[key].split(','); obj[key] = {}; while (line = parts.pop()) { sub_parts = line.split('='); obj[key][sub_parts[0]] = +sub_parts[1]; } i++; key = 'db' + i; } // Expose info key/vals to users this.server_info = obj; if (!obj.loading || obj.loading === '0') { debug('Redis server ready.'); this.on_ready(); } else { retry_time = obj.loading_eta_seconds * 1000; if (retry_time > 1000) { retry_time = 1000; } debug('Redis server still loading, trying again in ' + retry_time); setTimeout(function (self) { self.ready_check(); }, retry_time, this); } }; RedisClient.prototype.ready_check = function () { var self = this; debug('Checking server ready state...'); this.send_anyway = true; // secret flag to send_command to send something even if not 'ready' this.info(function (err, res) { self.on_info_cmd(err, res); }); this.send_anyway = false; }; RedisClient.prototype.send_offline_queue = function () { var command_obj; while (command_obj = this.offline_queue.shift()) { debug('Sending offline command: ' + command_obj.command); this.send_command(command_obj.command, command_obj.args, command_obj.callback); } this.drain(); // Even though items were shifted off, Queue backing store still uses memory until next add, so just get a new Queue this.offline_queue = new Queue(); }; var retry_connection = function (self) { debug('Retrying connection...'); self.emit('reconnecting', { delay: self.retry_delay, attempt: self.attempts }); self.retry_totaltime += self.retry_delay; self.attempts += 1; self.retry_delay = Math.round(self.retry_delay * self.retry_backoff); self.create_stream(); self.retry_timer = null; }; RedisClient.prototype.connection_gone = function (why) { var error; // If a retry is already in progress, just let that happen if (this.retry_timer) { return; } debug('Redis connection is gone from ' + why + ' event.'); this.connected = false; this.ready = false; // Deactivate cork to work with the offline queue this.cork = noop; this.pipeline = 0; if (this.old_state === null) { var state = { monitoring: this.monitoring, pub_sub_mode: this.pub_sub_mode, selected_db: this.selected_db }; this.old_state = state; this.monitoring = false; this.pub_sub_mode = false; this.selected_db = null; } // since we are collapsing end and close, users don't expect to be called twice if (!this.emitted_end) { this.emit('end'); this.emitted_end = true; } // If this is a requested shutdown, then don't retry if (this.closing) { debug('Connection ended from quit command, not retrying.'); this.flush_and_error(new Error('Redis connection gone from ' + why + ' event.')); return; } if (this.max_attempts !== 0 && this.attempts >= this.max_attempts || this.retry_totaltime >= this.connect_timeout) { var message = this.retry_totaltime >= this.connect_timeout ? 'connection timeout exceeded.' : 'maximum connection attempts exceeded.'; error = new Error('Redis connection in broken state: ' + message); error.code = 'CONNECTION_BROKEN'; this.flush_and_error(error); this.emit('error', error); this.end(); return; } // Flush all commands that have not yet returned. We can't handle them appropriatly if (this.command_queue.length !== 0) { error = new Error('Redis connection lost and command aborted in uncertain state. It might have been processed.'); error.code = 'UNCERTAIN_STATE'; // TODO: Evaluate to add this // if (this.options.retry_commands) { // this.offline_queue.unshift(this.command_queue.toArray()); // error.message = 'Command aborted in uncertain state and queued for next connection.'; // } this.flush_and_error(error, ['command_queue']); error.message = 'Redis connection lost and commands aborted in uncertain state. They might have been processed.'; this.emit('error', error); } if (this.retry_max_delay !== null && this.retry_delay > this.retry_max_delay) { this.retry_delay = this.retry_max_delay; } else if (this.retry_totaltime + this.retry_delay > this.connect_timeout) { // Do not exceed the maximum this.retry_delay = this.connect_timeout - this.retry_totaltime; } debug('Retry connection in ' + this.retry_delay + ' ms'); this.retry_timer = setTimeout(retry_connection, this.retry_delay, this); }; RedisClient.prototype.return_error = function (err) { var command_obj = this.command_queue.shift(), queue_len = this.command_queue.length; // send_command might have been used wrong => catch those cases too if (command_obj.command && command_obj.command.toUpperCase) { err.command = command_obj.command.toUpperCase(); } else { err.command = command_obj.command; } var match = err.message.match(utils.errCode); // LUA script could return user errors that don't behave like all other errors! if (match) { err.code = match[1]; } this.emit_idle(queue_len); if (command_obj.callback) { command_obj.callback(err); } else { this.emit('error', err); } }; RedisClient.prototype.drain = function () { this.emit('drain'); this.should_buffer = false; }; RedisClient.prototype.emit_idle = function (queue_len) { if (this.pub_sub_mode === false && queue_len === 0) { // Free the queue capacity memory by using a new queue this.command_queue = new Queue(); this.emit('idle'); } }; RedisClient.prototype.return_reply = function (reply) { var command_obj, len, type, timestamp, argindex, args, queue_len; // If the 'reply' here is actually a message received asynchronously due to a // pubsub subscription, don't pop the command queue as we'll only be consuming // the head command prematurely. if (this.pub_sub_mode && Array.isArray(reply) && reply[0]) { type = reply[0].toString(); } if (this.pub_sub_mode && (type === 'message' || type === 'pmessage')) { debug('Received pubsub message'); } else { command_obj = this.command_queue.shift(); } queue_len = this.command_queue.length; this.emit_idle(queue_len); if (command_obj && !command_obj.sub_command) { if (typeof command_obj.callback === 'function') { if ('exec' !== command_obj.command) { if (command_obj.buffer_args === false) { // If detect_buffers option was specified, then the reply from the parser will be Buffers. // If this command did not use Buffer arguments, then convert the reply to Strings here. reply = utils.reply_to_strings(reply); } // TODO - confusing and error-prone that hgetall is special cased in two places if ('hgetall' === command_obj.command) { reply = utils.reply_to_object(reply); } } command_obj.callback(null, reply); } else { debug('No callback for reply'); } } else if (this.pub_sub_mode || command_obj && command_obj.sub_command) { if (Array.isArray(reply)) { E if ((!command_obj || command_obj.buffer_args === false) && !this.options.return_buffers) { reply = utils.reply_to_strings(reply); } type = reply[0].toString(); if (type === 'message') { this.emit('message', reply[1], reply[2]); // channel, message } else if (type === 'pmessage') { this.emit('pmessage', reply[1].toString(), reply[2], reply[3]); // pattern, channel, message } else if (type === 'subscribe' || type === 'unsubscribe' || type === 'psubscribe' || type === 'punsubscribe') { if E(reply[2] === 0) { this.pub_sub_mode = false; debug('All subscriptions removed, exiting pub/sub mode'); } else { this.pub_sub_mode = true; } // Subscribe commands take an optional callback and also emit an event, but only the first response is included in the callback // TODO - document this or fix it so it works in a more obvious way if (command_obj && typeof command_obj.callback === 'function') { command_obj.callback(null, reply[1]); } this.emit(type, reply[1], reply[2]); // channel, count } else { this.emit('error', new Error('subscriptions are active but got unknown reply type ' + type)); } } else if (!this.closing) { this.emit('error', new Error('subscriptions are active but got an invalid reply: ' + reply)); } } /* istanbul ignore else: this is a safety check that we should not be able to trigger */ else if (this.monitoring) { iEf (typeof reply !== 'string') { reply = reply.toString(); } // If in monitoring mode only two commands are valid ones: AUTH and MONITOR wich reply with OK len = reply.indexOf(' '); timestamp = reply.slice(0, len); argindex = reply.indexOf('"'); args = reply.slice(argindex + 1, -1).split('" "').map(function (elem) { return elem.replace(/\\"/g, '"'); }); this.emit('monitor', timestamp, args); } else { var err = new Error('node_redis command queue state error. If you can reproduce this, please report it.'); err.command_obj = command_obj; this.emit('error', err); } }; RedisClient.prototype.send_command = function (command, args, callback) { var arg, command_obj, i, err, stream = this.stream, command_str = '', buffer_args = false, big_data = false, prefix_keys, buffer = this.options.return_buffers; if (args === undefined) { args = []; } else if (!callback) { if (typeof args[args.length - 1] === 'function') { callback = args.pop(); } else if (typeof args[args.length - 1] === 'undefined') { args.pop(); } } if (callback && process.domain) { callback = process.domain.bind(callback); } if (command === 'set' || command === 'setex') { // if the value is undefined or null and command is set or setx, need not to send message to redis if (args[args.length - 1] === undefined || args[args.length - 1] === null) { command = command.toUpperCase(); err = new Error('send_command: ' + command + ' value must not be undefined or null'); err.command = command; this.callback_emit_error(callback, err); // Singal no buffering return true; } } for (i = 0; i < args.length; i += 1) { if (Buffer.isBuffer(args[i])) { buffer_args = true; if (this.pipeline !== 0) { this.pipeline += 2; this.writeDefault = this.writeBuffers; } } else if (typeof args[i] !== 'string') { args[i] = String(args[i]); // 30000 seemed to be a good value to switch to buffers after testing and checking the pros and cons } else if (args[i].length > 30000) { big_data = true; args[i] = new Buffer(args[i]); if (this.pipeline !== 0) { this.pipeline += 2; this.writeDefault = this.writeBuffers; } } } if (this.options.detect_buffers) { buffer = buffer_args; } command_obj = new Command(command, args, false, buffer, callback); if (!this.ready && !this.send_anyway || !stream.writable) { if (this.closing || !this.enable_offline_queue) { command = command.toUpperCase(); if (!this.closing) { var msg = !stream.writable ? 'Stream not writeable.' : 'The connection is not yet established and the offline queue is deactivated.'; err = new Error(command + " can't be processed. " + msg); } else { err = new Error(command + " can't be processed. The connection has already been closed."); } err.command = command; this.callback_emit_error(callback, err); } else { debug('Queueing ' + command + ' for next server connection.'); this.offline_queue.push(command_obj); this.should_buffer = true; } // Return false to signal buffering return !this.should_buffer; } if (command === 'subscribe' || command === 'psubscribe' || command === 'unsubscribe' || command === 'punsubscribe') { this.pub_sub_command(command_obj); } else if (command === 'monitor') { this.monitoring = true; } else if (command === 'quit') { this.closing = true; } this.command_queue.push(command_obj); if (typeof this.options.rename_commands !== 'undefined' && this.options.rename_commands[command]) { command = this.options.rename_commands[command]; } if (this.options.prefix) { prefix_keys = commands.getKeyIndexes(command, args); i = prefix_keys.pop(); while (i !== undefined) { args[i] = this.options.prefix + args[i]; i = prefix_keys.pop(); } } // Always use 'Multi bulk commands', but if passed any Buffer args, then do multiple writes, one for each arg. // This means that using Buffers in commands is going to be slower, so use Strings if you don't already have a Buffer. command_str = '*' + (args.length + 1) + '\r\n$' + command.length + '\r\n' + command + '\r\n'; if (!buffer_args && !big_data) { // Build up a string and send entire command in one write for (i = 0; i < args.length; i += 1) { arg = args[i]; command_str += '$' + Buffer.byteLength(arg) + '\r\n' + arg + '\r\n'; } debug('Send ' + this.address + ' id ' + this.connection_id + ': ' + command_str); this.write(command_str); } else { debug('Send command (' + command_str + ') has Buffer arguments'); this.write(command_str); for (i = 0; i < args.length; i += 1) { arg = args[i]; if (typeof arg === 'string') { this.write('$' + Buffer.byteLength(arg) + '\r\n' + arg + '\r\n'); } else { this.write('$' + arg.length + '\r\n'); this.write(arg); this.write('\r\n'); } debug('send_command: buffer send ' + arg.length + ' bytes'); } } return !this.should_buffer; }; RedisClient.prototype.writeDefault = RedisClient.prototype.writeStrings = function (data) { var command, str = ''; while (command = this.pipeline_queue.shift()) { str += command; } this.should_buffer = !this.stream.write(str + data); }; RedisClient.prototype.writeBuffers = function (data) { var command; while (command = this.pipeline_queue.shift()) { this.stream.write(command); } this.should_buffer = !this.stream.write(data); }; RedisClient.prototype.write = function (data) { if (this.pipeline === 0) { this.should_buffer = !this.stream.write(data); return; } this.pipeline--; if (this.pipeline === 0) { this.writeDefault(data); return; } this.pipeline_queue.push(data); return; }; RedisClient.prototype.pub_sub_command = function (command_obj) { var i, key, command, args; if (this.pub_sub_mode === false) { debug('Entering pub/sub mode from ' + command_obj.command); } this.pub_sub_mode = true; command_obj.sub_command = true; command = command_obj.command; args = command_obj.args; if (command === 'subscribe' || command === 'psubscribe') { if (command === 'subscribe') { key = 'sub'; } else { key = 'psub'; } for (i = 0; i < args.length; i++) { this.subscription_set[key + ' ' + args[i]] = true; } } else { if (command === 'unsubscribe') { key = 'sub'; } else { key = 'psub'; } for (i = 0; i < args.length; i++) { delete this.subscription_set[key + ' ' + args[i]]; } } }; RedisClient.prototype.end = function (flush) { this.stream._events = {}; // Clear retry_timer if (this.retry_timer){ clearTimeout(this.retry_timer); this.retry_timer = null; } this.stream.on('error', noop); // Flush queue if wanted if (flush) { this.flush_and_error(new Error("The command can't be processed. The connection has already been closed.")); } this.connected = false; this.ready = false; this.closing = true; return this.stream.destroySoon(); }; function Multi(client, args) { this._client = client; this.queue = new Queue(); var command, tmp_args; if (Array.isArray(args)) { for (var i = 0; i < args.length; i++) { command = args[i][0]; tmp_args = args[i].slice(1); if (Array.isArray(command)) { this[command[0]].apply(this, command.slice(1).concat(tmp_args)); } else { this[command].apply(this, tmp_args); } } } } commands.list.forEach(function (command) { // var command; // while (command = commands.list.pop()) { RedisClient.prototype[command.toUpperCase()] = RedisClient.prototype[command] = function (command, key, arg, callback) { console.log(this); if (Array.isArray(key)) { return this.send_command(command, key, arg); } if (Array.isArray(arg)) { arg = [key].concat(arg); return this.send_command(command, arg, callback); } // Speed up the common case var len = arguments.length; if (len === 2) { return this.send_command(command, [key, arg]); } if (len === 3) { return this.send_command(command, [key, arg, callback]); } return this.send_command(command, utils.to_array(arguments)); }; //.bind(RedisClient, command); Multi.prototype[command.toUpperCase()] = Multi.prototype[command] = function (command, key, arg, callback) { if (Array.isArray(key)) { if (arg) { key = key.concat([arg]); } this.queue.push([command].concat(key)); } else if (Array.isArray(arg)) { if (callback) { arg = arg.concat([callback]); } this.queue.push([command, key].concat(arg)); } else { // Speed up the common case var len = arguments.length; if (len === 2) { this.queue.push([command, key, arg]); } else if (len === 3) { this.queue.push([command, key, arg, callback]); } else { this.queue.push([command].concat(utils.to_array(arguments))); } } return this; }; //.bind(Multi, command); }); RedisClient.prototype.multi = RedisClient.prototype.MULTI = function (args) { var multi = new Multi(this, args); multi.exec = multi.EXEC = multi.exec_transaction; return multi; }; RedisClient.prototype.batch = RedisClient.prototype.BATCH = function (args) { return new Multi(this, args); }; // Store db in this.select_db to restore it on reconnect RedisClient.prototype.select = RedisClient.prototype.SELECT = function (db, callback) { var self = this; return this.send_command('select', [db], function (err, res) { if (err === null) { self.selected_db = db; } if (typeof callback === 'function') { callback(err, res); } else if (err) { self.emit('error', err); } }); }; RedisClient.prototype.callback_emit_error = function (callback, err) { if (callback) { setImmediate(function () { callback(err); }); } else { this.emit('error', err); } }; // Stash auth for connect and reconnect. Send immediately if already connected. RedisClient.prototype.auth = RedisClient.prototype.AUTH = function (pass, callback) { if (typeof pass !== 'string') { var err = new Error('The password has to be of type "string"'); err.command = 'AUTH'; this.callback_emit_error(callback, err); return true; } this.auth_pass = pass; debug('Saving auth as ' + this.auth_pass); // Only run the callback once. So do not safe it if already connected if (this.connected) { return this.send_command('auth', [this.auth_pass], callback); } this.auth_callback = callback; return true; }; RedisClient.prototype.hmset = RedisClient.prototype.HMSET = function (key, args, callback) { var field, tmp_args; if (Array.isArray(key)) { return this.send_command('hmset', key, args); } if (Array.isArray(args)) { return this.send_command('hmset', [key].concat(args), callback); } if (typeof args === 'object') { // User does: client.hmset(key, {key1: val1, key2: val2}) // assuming key is a string, i.e. email address // if key is a number, i.e. timestamp, convert to string // TODO: This seems random and no other command get's the key converted => either all or none should behave like this if (typeof key !== 'string') { key = key.toString(); } tmp_args = [key]; var fields = Object.keys(args); while (field = fields.shift()) { tmp_args.push(field, args[field]); } return this.send_command('hmset', tmp_args, callback); } return this.send_command('hmset', utils.to_array(arguments)); }; Multi.prototype.hmset = Multi.prototype.HMSET = function (key, args, callback) { var tmp_args, field; if (Array.isArray(key)) { if (args) { key = key.concat([args]); } tmp_args = ['hmset'].concat(key); } else if (Array.isArray(args)) { if (callback) { args = args.concat([callback]); } tmp_args = ['hmset', key].concat(args); } else if (typeof args === 'object') { if (typeof key !== 'string') { key = key.toString(); } tmp_args = ['hmset', key]; var fields = Object.keys(args); while (field = fields.shift()) { tmp_args.push(field); tmp_args.push(args[field]); } if (callback) { tmp_args.push(callback); } } else { tmp_args = utils.to_array(arguments); tmp_args.unshift('hmset'); } this.queue.push(tmp_args); return this; }; Multi.prototype.send_command = function (command, args, index, cb) { var self = this; this._client.send_command(command, args, function (err, reply) { if (err) { if (cb) { cb(err); } err.position = index; self.errors.push(err); } }); }; Multi.prototype.exec_atomic = function (callback) { if (this.queue.length < 2) { return this.exec_batch(callback); } return this.exec(callback); }; Multi.prototype.exec_transaction = function (callback) { var self = this; var len = this.queue.length; var cb; this.errors = []; this.callback = callback; this._client.cork(len + 2); this.wants_buffers = new Array(len); this.send_command('multi', []); // Drain queue, callback will catch 'QUEUED' or error for (var index = 0; index < len; index++) { var args = this.queue.get(index).slice(0); var command = args.shift(); if (typeof args[args.length - 1] === 'function') { cb = args.pop(); } else { cb = undefined; } // Keep track of who wants buffer responses: if (this._client.options.return_buffers) { this.wants_buffers[index] = true; } else if (!this._client.options.detect_buffers) { this.wants_buffers[index] = false; } else { this.wants_buffers[index] = false; for (var i = 0; i < args.length; i += 1) { if (Buffer.isBuffer(args[i])) { this.wants_buffers[index] = true; break; } } } this.send_command(command, args, index, cb); } this._client.send_command('exec', [], function(err, replies) { self.execute_callback(err, replies); }); this._client.uncork(); this._client.writeDefault = this._client.writeStrings; return !this._client.should_buffer; }; Multi.prototype.execute_callback = function (err, replies) { var i = 0, args; if (err) { // The errors would be circular var connection_error = ['CONNECTION_BROKEN', 'UNCERTAIN_STATE'].indexOf(err.code) !== -1; err.errors = connection_error ? [] : this.errors; if (this.callback) { this.callback(err); // Exclude connection errors so that those errors won't be emitted twice } else if (!connection_error) { this._client.emit('error', err); } return; } if (replies) { while (args = this.queue.shift()) { // If we asked for strings, even in detect_buffers mode, then return strings: if (replies[i] instanceof Error) { var match = replies[i].message.match(utils.errCode); // LUA script could return user errors that don't behave like all other errors! if (match) { replies[i].code = match[1]; } replies[i].command = args[0].toUpperCase(); } else if (replies[i]) { if (this.wants_buffers[i] === false) { replies[i] = utils.reply_to_strings(replies[i]); } if (args[0] === 'hgetall') { // TODO - confusing and error-prone that hgetall is special cased in two places replies[i] = utils.reply_to_object(replies[i]); } } if (typeof args[args.length - 1] === 'function') { if (replies[i] instanceof Error) { args[args.length - 1](replies[i]); } else { args[args.length - 1](null, replies[i]); } } i++; } } if (this.callback) { this.callback(null, replies); } }; Multi.prototype.callback = function (cb, i) { var self = this; return function (err, res) { if (err) { self.results[i] = err; } else { self.results[i] = res; } if (cb) { cb(err, res); } // Do not emit an error here. Otherwise each error would result in one emit. // The errors will be returned in the result anyway }; }; Multi.prototype.exec = Multi.prototype.EXEC = Multi.prototype.exec_batch = function (callback) { var len = this.queue.length; var self = this; var index = 0; var args; if (len === 0) { if (callback) { // The execution order won't be obtained in this case setImmediate(function () { callback(null, []); }); } return true; } this.results = new Array(len); this._client.cork(len); var lastCallback = function (cb) { return function (err, res) { cb(err, res); callback(null, self.results); }; }; while (args = this.queue.shift()) { var command = args.shift(); var cb; if (typeof args[args.length - 1] === 'function') { cb = this.callback(args.pop(), index); } else { cb = this.callback(undefined, index); } if (callback && index === len - 1) { cb = lastCallback(cb); } this._client.send_command(command, args, cb); index++; } this._client.uncork(); this._client.writeDefault = this._client.writeStrings; return !this._client.should_buffer; }; var createClient = function (port_arg, host_arg, options) { if (typeof port_arg === 'number' || typeof port_arg === 'string' && /^\d+$/.test(port_arg)) { options = clone(options); options.host = host_arg; options.port = port_arg; } else if (typeof port_arg === 'string' || port_arg && port_arg.url) { options = clone(port_arg.url ? port_arg : host_arg || options); var parsed = URL.parse(port_arg.url || port_arg, true, true); if (parsed.hostname) { if (parsed.auth) { options.auth_pass = parsed.auth.split(':')[1]; } if (parsed.protocol !== 'redis:') { throw new Error('Connection string must use the "redis:" protocol'); } options.host = parsed.hostname; options.port = parsed.port; } else { options.path = port_arg; } } else if (typeof port_arg === 'object' || port_arg === undefined) { options = clone(port_arg || options); options.host = options.host || host_arg; } if (!options) { throw new Error('Unknown type of connection in createClient()'); } return new RedisClient(options); }; exports.createClient = createClient; exports.RedisClient = RedisClient; exports.print = utils.print; exports.Multi = Multi; |