1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
/*
*
* Copyright (c) 2018, Livio
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following
* disclaimer in the documentation and/or other materials provided with the
* distribution.
*
* Neither the name of the Ford Motor Company nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "transport_manager/cloud/websocket_client_connection.h"
#include "transport_manager/cloud/cloud_device.h"
#include "transport_manager/transport_adapter/transport_adapter_controller.h"
#include "utils/logger.h"
namespace transport_manager {
namespace transport_adapter {
CREATE_LOGGERPTR_GLOBAL(logger_, "TransportManager")
WebsocketClientConnection::WebsocketClientConnection(
const DeviceUID& device_uid,
const ApplicationHandle& app_handle,
TransportAdapterController* controller)
: controller_(controller)
, resolver_(ioc_)
, ws_(ioc_)
, shutdown_(false)
, thread_delegate_(new LoopThreadDelegate(&message_queue_, this))
, write_thread_(threads::CreateThread("WS Async Send", thread_delegate_))
, device_uid_(device_uid)
, app_handle_(app_handle) {}
WebsocketClientConnection::~WebsocketClientConnection() {
ioc_.stop();
if (io_service_thread_.joinable()) {
io_service_thread_.join();
}
}
TransportAdapter::Error WebsocketClientConnection::Start() {
LOG4CXX_AUTO_TRACE(logger_);
DeviceSptr device = controller_->FindDevice(device_uid_);
CloudDevice* cloud_device = static_cast<CloudDevice*>(device.get());
auto const host = cloud_device->GetHost();
auto const port = cloud_device->GetPort();
boost::system::error_code ec;
auto const results = resolver_.resolve(host, port, ec);
if (ec) {
std::string str_err = "ErrorMessage: " + ec.message();
LOG4CXX_ERROR(logger_, "Could not resolve host/port: " << str_err);
Shutdown();
return TransportAdapter::FAIL;
}
boost::asio::connect(ws_.next_layer(), results.begin(), results.end(), ec);
if (ec) {
std::string str_err = "ErrorMessage: " + ec.message();
LOG4CXX_ERROR(logger_,
"Could not connect to websocket: " << host << ":" << port);
LOG4CXX_ERROR(logger_, str_err);
Shutdown();
return TransportAdapter::FAIL;
}
ws_.handshake(host, "/", ec);
if (ec) {
std::string str_err = "ErrorMessage: " + ec.message();
LOG4CXX_ERROR(logger_,
"Could not complete handshake with host/port: " << host << ":"
<< port);
LOG4CXX_ERROR(logger_, str_err);
Shutdown();
return TransportAdapter::FAIL;
}
ws_.binary(true);
write_thread_->start(threads::ThreadOptions());
controller_->ConnectDone(device_uid_, app_handle_);
// Start async read
ws_.async_read(buffer_,
std::bind(&WebsocketClientConnection::OnRead,
this,
std::placeholders::_1,
std::placeholders::_2));
// Start IO Service thread. Allows for async reads without blocking.
io_service_thread_ = std::thread([&]() {
ioc_.run();
LOG4CXX_DEBUG(logger_, "Ending Boost IO Thread");
});
LOG4CXX_DEBUG(logger_,
"Successfully started websocket connection @: " << host << ":"
<< port);
return TransportAdapter::OK;
}
void WebsocketClientConnection::Recv(boost::system::error_code ec) {
if (shutdown_) {
return;
}
if (ec) {
std::string str_err = "ErrorMessage: " + ec.message();
LOG4CXX_ERROR(logger_, str_err);
Shutdown();
return;
}
ws_.async_read(buffer_,
std::bind(&WebsocketClientConnection::OnRead,
this,
std::placeholders::_1,
std::placeholders::_2));
}
void WebsocketClientConnection::OnRead(boost::system::error_code ec,
std::size_t bytes_transferred) {
boost::ignore_unused(bytes_transferred);
if (ec) {
std::string str_err = "ErrorMessage: " + ec.message();
LOG4CXX_ERROR(logger_, str_err);
Shutdown();
controller_->ConnectionAborted(
device_uid_, app_handle_, CommunicationError());
return;
}
std::string data_str = boost::beast::buffers_to_string(buffer_.data());
LOG4CXX_DEBUG(logger_, "Cloud Transport Received: " << data_str);
ssize_t size = (ssize_t)buffer_.size();
const uint8_t* data = boost::asio::buffer_cast<const uint8_t*>(
boost::beast::buffers_front(buffer_.data()));
::protocol_handler::RawMessagePtr frame(
new protocol_handler::RawMessage(0, 0, data, size));
controller_->DataReceiveDone(device_uid_, app_handle_, frame);
buffer_.consume(buffer_.size());
Recv(ec);
}
TransportAdapter::Error WebsocketClientConnection::SendData(
::protocol_handler::RawMessagePtr message) {
LOG4CXX_AUTO_TRACE(logger_);
sync_primitives::AutoLock auto_lock(frames_to_send_mutex_);
message_queue_.push(message);
return TransportAdapter::OK;
}
TransportAdapter::Error WebsocketClientConnection::Disconnect() {
LOG4CXX_AUTO_TRACE(logger_);
Shutdown();
return TransportAdapter::OK;
}
void WebsocketClientConnection::Shutdown() {
shutdown_ = true;
if (thread_delegate_) {
thread_delegate_->SetShutdown();
write_thread_->join();
delete thread_delegate_;
}
if (buffer_.size()) {
buffer_.consume(buffer_.size());
}
}
WebsocketClientConnection::LoopThreadDelegate::LoopThreadDelegate(
MessageQueue<Message, AsyncQueue>* message_queue,
WebsocketClientConnection* handler)
: message_queue_(*message_queue), handler_(*handler), shutdown_(false) {}
void WebsocketClientConnection::LoopThreadDelegate::threadMain() {
while (!message_queue_.IsShuttingDown() && !shutdown_) {
DrainQueue();
message_queue_.wait();
}
DrainQueue();
}
void WebsocketClientConnection::LoopThreadDelegate::exitThreadMain() {
shutdown_ = true;
if (!message_queue_.IsShuttingDown()) {
message_queue_.Shutdown();
}
}
void WebsocketClientConnection::LoopThreadDelegate::DrainQueue() {
while (!message_queue_.empty()) {
Message message_ptr;
message_queue_.pop(message_ptr);
if (!shutdown_) {
boost::system::error_code ec;
handler_.ws_.write(
boost::asio::buffer(message_ptr->data(), message_ptr->data_size()));
if (ec) {
LOG4CXX_ERROR(logger_, "Error writing to websocket");
handler_.Shutdown();
handler_.controller_->DataSendFailed(handler_.device_uid_,
handler_.app_handle_,
message_ptr,
DataSendError());
}
}
}
}
void WebsocketClientConnection::LoopThreadDelegate::SetShutdown() {
shutdown_ = true;
if (!message_queue_.IsShuttingDown()) {
message_queue_.Shutdown();
}
}
} // namespace transport_adapter
} // namespace transport_manager
|
