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1 | /* |
2 | * Licensed to the Apache Software Foundation (ASF) under one | |
3 | * or more contributor license agreements. See the NOTICE file | |
4 | * distributed with this work for additional information | |
5 | * regarding copyright ownership. The ASF licenses this file | |
6 | * to you under the Apache License, Version 2.0 (the | |
7 | * "License"); you may not use this file except in compliance | |
8 | * with the License. You may obtain a copy of the License at | |
9 | * | |
10 | * http://www.apache.org/licenses/LICENSE-2.0 | |
11 | * | |
12 | * Unless required by applicable law or agreed to in writing, | |
13 | * software distributed under the License is distributed on an | |
14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
15 | * KIND, either express or implied. See the License for the | |
16 | * specific language governing permissions and limitations | |
17 | * under the License. | |
18 | */ | |
19 | ||
20 | #include <string> | |
21 | #include <memory> | |
22 | #include <thrift/concurrency/ThreadFactory.h> | |
23 | #include <thrift/server/TThreadedServer.h> | |
24 | ||
25 | namespace apache { | |
26 | namespace thrift { | |
27 | namespace server { | |
28 | ||
29 | using apache::thrift::concurrency::Runnable; | |
30 | using apache::thrift::concurrency::Synchronized; | |
31 | using apache::thrift::concurrency::Thread; | |
32 | using apache::thrift::concurrency::ThreadFactory; | |
33 | using apache::thrift::protocol::TProtocol; | |
34 | using apache::thrift::protocol::TProtocolFactory; | |
35 | using std::make_shared; | |
36 | using std::shared_ptr; | |
37 | using apache::thrift::transport::TServerTransport; | |
38 | using apache::thrift::transport::TTransport; | |
39 | using apache::thrift::transport::TTransportException; | |
40 | using apache::thrift::transport::TTransportFactory; | |
41 | ||
42 | TThreadedServer::TThreadedServer(const shared_ptr<TProcessorFactory>& processorFactory, | |
43 | const shared_ptr<TServerTransport>& serverTransport, | |
44 | const shared_ptr<TTransportFactory>& transportFactory, | |
45 | const shared_ptr<TProtocolFactory>& protocolFactory, | |
46 | const shared_ptr<ThreadFactory>& threadFactory) | |
47 | : TServerFramework(processorFactory, serverTransport, transportFactory, protocolFactory), | |
48 | threadFactory_(threadFactory) { | |
49 | } | |
50 | ||
51 | TThreadedServer::TThreadedServer(const shared_ptr<TProcessor>& processor, | |
52 | const shared_ptr<TServerTransport>& serverTransport, | |
53 | const shared_ptr<TTransportFactory>& transportFactory, | |
54 | const shared_ptr<TProtocolFactory>& protocolFactory, | |
55 | const shared_ptr<ThreadFactory>& threadFactory) | |
56 | : TServerFramework(processor, serverTransport, transportFactory, protocolFactory), | |
57 | threadFactory_(threadFactory) { | |
58 | } | |
59 | ||
60 | TThreadedServer::TThreadedServer(const shared_ptr<TProcessorFactory>& processorFactory, | |
61 | const shared_ptr<TServerTransport>& serverTransport, | |
62 | const shared_ptr<TTransportFactory>& inputTransportFactory, | |
63 | const shared_ptr<TTransportFactory>& outputTransportFactory, | |
64 | const shared_ptr<TProtocolFactory>& inputProtocolFactory, | |
65 | const shared_ptr<TProtocolFactory>& outputProtocolFactory, | |
66 | const shared_ptr<ThreadFactory>& threadFactory) | |
67 | : TServerFramework(processorFactory, | |
68 | serverTransport, | |
69 | inputTransportFactory, | |
70 | outputTransportFactory, | |
71 | inputProtocolFactory, | |
72 | outputProtocolFactory), | |
73 | threadFactory_(threadFactory) { | |
74 | } | |
75 | ||
76 | TThreadedServer::TThreadedServer(const shared_ptr<TProcessor>& processor, | |
77 | const shared_ptr<TServerTransport>& serverTransport, | |
78 | const shared_ptr<TTransportFactory>& inputTransportFactory, | |
79 | const shared_ptr<TTransportFactory>& outputTransportFactory, | |
80 | const shared_ptr<TProtocolFactory>& inputProtocolFactory, | |
81 | const shared_ptr<TProtocolFactory>& outputProtocolFactory, | |
82 | const shared_ptr<ThreadFactory>& threadFactory) | |
83 | : TServerFramework(processor, | |
84 | serverTransport, | |
85 | inputTransportFactory, | |
86 | outputTransportFactory, | |
87 | inputProtocolFactory, | |
88 | outputProtocolFactory), | |
89 | threadFactory_(threadFactory) { | |
90 | } | |
91 | ||
92 | TThreadedServer::~TThreadedServer() = default; | |
93 | ||
94 | void TThreadedServer::serve() { | |
95 | TServerFramework::serve(); | |
96 | ||
97 | // Ensure post-condition of no active clients | |
98 | Synchronized s(clientMonitor_); | |
99 | while (!activeClientMap_.empty()) { | |
100 | clientMonitor_.wait(); | |
101 | } | |
102 | ||
103 | drainDeadClients(); | |
104 | } | |
105 | ||
106 | void TThreadedServer::drainDeadClients() { | |
107 | // we're in a monitor here | |
108 | while (!deadClientMap_.empty()) { | |
109 | auto it = deadClientMap_.begin(); | |
110 | it->second->join(); | |
111 | deadClientMap_.erase(it); | |
112 | } | |
113 | } | |
114 | ||
115 | void TThreadedServer::onClientConnected(const shared_ptr<TConnectedClient>& pClient) { | |
116 | Synchronized sync(clientMonitor_); | |
117 | shared_ptr<TConnectedClientRunner> pRunnable = make_shared<TConnectedClientRunner>(pClient); | |
118 | shared_ptr<Thread> pThread = threadFactory_->newThread(pRunnable); | |
119 | pRunnable->thread(pThread); | |
120 | activeClientMap_.insert(ClientMap::value_type(pClient.get(), pThread)); | |
121 | pThread->start(); | |
122 | } | |
123 | ||
124 | void TThreadedServer::onClientDisconnected(TConnectedClient* pClient) { | |
125 | Synchronized sync(clientMonitor_); | |
126 | drainDeadClients(); // use the outgoing thread to do some maintenance on our dead client backlog | |
127 | auto it = activeClientMap_.find(pClient); | |
128 | if (it != activeClientMap_.end()) { | |
129 | auto end = it; | |
130 | deadClientMap_.insert(it, ++end); | |
131 | activeClientMap_.erase(it); | |
132 | } | |
133 | if (activeClientMap_.empty()) { | |
134 | clientMonitor_.notify(); | |
135 | } | |
136 | } | |
137 | ||
138 | TThreadedServer::TConnectedClientRunner::TConnectedClientRunner(const shared_ptr<TConnectedClient>& pClient) | |
139 | : pClient_(pClient) { | |
140 | } | |
141 | ||
142 | TThreadedServer::TConnectedClientRunner::~TConnectedClientRunner() = default; | |
143 | ||
144 | void TThreadedServer::TConnectedClientRunner::run() /* override */ { | |
145 | pClient_->run(); // Run the client | |
146 | pClient_.reset(); // The client is done - release it here rather than in the destructor for safety | |
147 | } | |
148 | ||
149 | } | |
150 | } | |
151 | } // apache::thrift::server |