+++ /dev/null
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied. See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-var util = require('util');
-var EventEmitter = require('events').EventEmitter;
-var constants = require('constants');
-var net = require('net');
-var tls = require('tls');
-var thrift = require('./thrift');
-var log = require('./log');
-
-var TBufferedTransport = require('./buffered_transport');
-var TBinaryProtocol = require('./binary_protocol');
-var InputBufferUnderrunError = require('./input_buffer_underrun_error');
-
-var createClient = require('./create_client');
-
-var binary = require('./binary');
-
-var Connection = exports.Connection = function(stream, options) {
- var self = this;
- EventEmitter.call(this);
-
- this.seqId2Service = {};
- this.connection = stream;
- this.ssl = (stream.encrypted);
- this.options = options || {};
- this.transport = this.options.transport || TBufferedTransport;
- this.protocol = this.options.protocol || TBinaryProtocol;
- this.offline_queue = [];
- this.connected = false;
- this.initialize_retry_vars();
-
- this._debug = this.options.debug || false;
- if (this.options.max_attempts &&
- !isNaN(this.options.max_attempts) &&
- this.options.max_attempts > 0) {
- this.max_attempts = +this.options.max_attempts;
- }
- this.retry_max_delay = null;
- if (this.options.retry_max_delay !== undefined &&
- !isNaN(this.options.retry_max_delay) &&
- this.options.retry_max_delay > 0) {
- this.retry_max_delay = this.options.retry_max_delay;
- }
- this.connect_timeout = false;
- if (this.options.connect_timeout &&
- !isNaN(this.options.connect_timeout) &&
- this.options.connect_timeout > 0) {
- this.connect_timeout = +this.options.connect_timeout;
- }
-
- this.connection.addListener(this.ssl ? "secureConnect" : "connect", function() {
- self.connected = true;
-
- this.setTimeout(self.options.timeout || 0);
- this.setNoDelay();
- this.frameLeft = 0;
- this.framePos = 0;
- this.frame = null;
- self.initialize_retry_vars();
- self.flush_offline_queue();
-
- self.emit("connect");
- });
-
- this.connection.addListener("error", function(err) {
- // Only emit the error if no-one else is listening on the connection
- // or if someone is listening on us, because Node turns unhandled
- // 'error' events into exceptions.
- if (self.connection.listeners('error').length === 1 ||
- self.listeners('error').length > 0) {
- self.emit("error", err);
- }
- });
-
- // Add a close listener
- this.connection.addListener("close", function() {
- self.connection_gone(); // handle close event. try to reconnect
- });
-
- this.connection.addListener("timeout", function() {
- self.emit("timeout");
- });
-
- this.connection.addListener("data", self.transport.receiver(function(transport_with_data) {
- var message = new self.protocol(transport_with_data);
- try {
- while (true) {
- var header = message.readMessageBegin();
- var dummy_seqid = header.rseqid * -1;
- var client = self.client;
- //The Multiplexed Protocol stores a hash of seqid to service names
- // in seqId2Service. If the SeqId is found in the hash we need to
- // lookup the appropriate client for this call.
- // The connection.client object is a single client object when not
- // multiplexing, when using multiplexing it is a service name keyed
- // hash of client objects.
- //NOTE: The 2 way interdependencies between protocols, transports,
- // connections and clients in the Node.js implementation are irregular
- // and make the implementation difficult to extend and maintain. We
- // should bring this stuff inline with typical thrift I/O stack
- // operation soon.
- // --ra
- var service_name = self.seqId2Service[header.rseqid];
- if (service_name) {
- client = self.client[service_name];
- }
- /*jshint -W083 */
- client._reqs[dummy_seqid] = function(err, success){
- transport_with_data.commitPosition();
-
- var callback = client._reqs[header.rseqid];
- delete client._reqs[header.rseqid];
- if (service_name) {
- delete self.seqId2Service[header.rseqid];
- }
- if (callback) {
- callback(err, success);
- }
- };
- /*jshint +W083 */
-
- if(client['recv_' + header.fname]) {
- client['recv_' + header.fname](message, header.mtype, dummy_seqid);
- } else {
- delete client._reqs[dummy_seqid];
- self.emit("error",
- new thrift.TApplicationException(thrift.TApplicationExceptionType.WRONG_METHOD_NAME,
- "Received a response to an unknown RPC function"));
- }
- }
- }
- catch (e) {
- if (e instanceof InputBufferUnderrunError) {
- transport_with_data.rollbackPosition();
- }
- else {
- self.emit('error', e);
- }
- }
- }));
-};
-util.inherits(Connection, EventEmitter);
-
-Connection.prototype.end = function() {
- this.connection.end();
-};
-
-Connection.prototype.destroy = function() {
- this.connection.destroy();
-};
-
-Connection.prototype.initialize_retry_vars = function () {
- this.retry_timer = null;
- this.retry_totaltime = 0;
- this.retry_delay = 150;
- this.retry_backoff = 1.7;
- this.attempts = 0;
-};
-
-Connection.prototype.flush_offline_queue = function () {
- var self = this;
- var offline_queue = this.offline_queue;
-
- // Reset offline queue
- this.offline_queue = [];
- // Attempt to write queued items
- offline_queue.forEach(function(data) {
- self.write(data);
- });
-};
-
-Connection.prototype.write = function(data) {
- if (!this.connected) {
- this.offline_queue.push(data);
- return;
- }
- this.connection.write(data);
-};
-
-Connection.prototype.connection_gone = function () {
- var self = this;
- this.connected = false;
-
- // If a retry is already in progress, just let that happen
- if (this.retry_timer) {
- return;
- }
- // We cannot reconnect a secure socket.
- if (!this.max_attempts || this.ssl) {
- self.emit("close");
- return;
- }
-
- if (this.retry_max_delay !== null && this.retry_delay >= this.retry_max_delay) {
- this.retry_delay = this.retry_max_delay;
- } else {
- this.retry_delay = Math.floor(this.retry_delay * this.retry_backoff);
- }
-
- log.debug("Retry connection in " + this.retry_delay + " ms");
-
- if (this.max_attempts && this.attempts >= this.max_attempts) {
- this.retry_timer = null;
- console.error("thrift: Couldn't get thrift connection after " + this.max_attempts + " attempts.");
- self.emit("close");
- return;
- }
-
- this.attempts += 1;
- this.emit("reconnecting", {
- delay: self.retry_delay,
- attempt: self.attempts
- });
-
- this.retry_timer = setTimeout(function () {
- if (self.connection.destroyed) {
- self.retry_timer = null;
- return;
- }
-
- log.debug("Retrying connection...");
-
- self.retry_totaltime += self.retry_delay;
-
- if (self.connect_timeout && self.retry_totaltime >= self.connect_timeout) {
- self.retry_timer = null;
- console.error("thrift: Couldn't get thrift connection after " + self.retry_totaltime + "ms.");
- self.emit("close");
- return;
- }
-
- if (self.path !== undefined) {
- self.connection.connect(self.path);
- } else {
- self.connection.connect(self.port, self.host);
- }
- self.retry_timer = null;
- }, this.retry_delay);
-};
-
-exports.createConnection = function(host, port, options) {
- var stream = net.createConnection( {
- port: port,
- host: host,
- timeout: options.connect_timeout || options.timeout || 0
- });
- var connection = new Connection(stream, options);
- connection.host = host;
- connection.port = port;
-
- return connection;
-};
-
-exports.createUDSConnection = function(path, options) {
- var stream = net.createConnection(path);
- var connection = new Connection(stream, options);
- connection.path = path;
-
- return connection;
-};
-
-exports.createSSLConnection = function(host, port, options) {
- if (!('secureProtocol' in options) && !('secureOptions' in options)) {
- options.secureProtocol = "SSLv23_method";
- options.secureOptions = constants.SSL_OP_NO_SSLv2 | constants.SSL_OP_NO_SSLv3;
- }
-
- var stream = tls.connect(port, host, options);
- var connection = new Connection(stream, options);
- connection.host = host;
- connection.port = port;
-
- return connection;
-};
-
-
-exports.createClient = createClient;
-
-var child_process = require('child_process');
-var StdIOConnection = exports.StdIOConnection = function(command, options) {
- var command_parts = command.split(' ');
- command = command_parts[0];
- var args = command_parts.splice(1,command_parts.length -1);
- var child = this.child = child_process.spawn(command,args);
-
- var self = this;
- EventEmitter.call(this);
-
- this.connection = child.stdin;
- this.options = options || {};
- this.transport = this.options.transport || TBufferedTransport;
- this.protocol = this.options.protocol || TBinaryProtocol;
- this.offline_queue = [];
-
- if (log.getLogLevel() === 'debug') {
- this.child.stderr.on('data', function (err) {
- log.debug(err.toString(), 'CHILD ERROR');
- });
-
- this.child.on('exit', function (code,signal) {
- log.debug(code + ':' + signal, 'CHILD EXITED');
- });
- }
-
- this.frameLeft = 0;
- this.framePos = 0;
- this.frame = null;
- this.connected = true;
-
- self.flush_offline_queue();
-
- this.connection.addListener("error", function(err) {
- self.emit("error", err);
- });
-
- // Add a close listener
- this.connection.addListener("close", function() {
- self.emit("close");
- });
-
- child.stdout.addListener("data", self.transport.receiver(function(transport_with_data) {
- var message = new self.protocol(transport_with_data);
- try {
- var header = message.readMessageBegin();
- var dummy_seqid = header.rseqid * -1;
- var client = self.client;
- client._reqs[dummy_seqid] = function(err, success){
- transport_with_data.commitPosition();
-
- var callback = client._reqs[header.rseqid];
- delete client._reqs[header.rseqid];
- if (callback) {
- callback(err, success);
- }
- };
- client['recv_' + header.fname](message, header.mtype, dummy_seqid);
- }
- catch (e) {
- if (e instanceof InputBufferUnderrunError) {
- transport_with_data.rollbackPosition();
- }
- else {
- throw e;
- }
- }
- }));
-};
-
-util.inherits(StdIOConnection, EventEmitter);
-
-StdIOConnection.prototype.end = function() {
- this.connection.end();
-};
-
-StdIOConnection.prototype.flush_offline_queue = function () {
- var self = this;
- var offline_queue = this.offline_queue;
-
- // Reset offline queue
- this.offline_queue = [];
- // Attempt to write queued items
- offline_queue.forEach(function(data) {
- self.write(data);
- });
-};
-
-StdIOConnection.prototype.write = function(data) {
- if (!this.connected) {
- this.offline_queue.push(data);
- return;
- }
- this.connection.write(data);
-};
-
-exports.createStdIOConnection = function(command,options){
- return new StdIOConnection(command,options);
-};
-
-exports.createStdIOClient = createClient;
projects / ceph.git / blobdiff