4 * Copyright (c) 2017 Samsung Electronics Co., Ltd.
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
26 #include "sensor_log.h"
27 #include "channel_event_handler.h"
29 #define SYSTEMD_SOCK_BUF_SIZE (128*1024)
33 class send_event_handler : public event_handler
36 send_event_handler(channel *ch, message *msg)
41 bool handle(int fd, event_condition condition)
43 if (!m_ch || !m_ch->is_connected())
46 if (condition & (EVENT_IN | EVENT_HUP))
49 if (!m_ch->send_sync(m_msg))
63 class read_event_handler : public event_handler
66 read_event_handler(channel *ch)
70 bool handle(int fd, event_condition condition)
74 if (!m_ch || !m_ch->is_connected())
77 if (condition & (EVENT_OUT | EVENT_HUP))
80 if (!m_ch->read_sync(msg, false))
90 channel::channel(socket *sock)
91 : m_fd(sock->get_fd())
103 _D("Destroyed[%llu]", m_event_id);
107 uint64_t channel::bind(void)
110 m_event_id = m_loop->add_event(m_socket->get_fd(),
111 (EVENT_IN | EVENT_HUP | EVENT_NVAL),
112 dynamic_cast<channel_event_handler *>(m_handler));
114 _D("Bound[%llu]", m_event_id);
118 uint64_t channel::bind(channel_handler *handler, event_loop *loop, bool loop_bind)
122 m_connected.store(true);
125 m_handler->connected(this);
133 uint64_t channel::connect(channel_handler *handler, event_loop *loop, bool loop_bind)
135 if (!m_socket->connect())
138 bind(handler, loop, loop_bind);
140 _D("Connected[%llu]", m_event_id);
144 void channel::disconnect(void)
146 if (!is_connected()) {
147 _D("Channel is not connected");
151 m_connected.store(false);
153 _D("Disconnecting..[%llu]", m_event_id);
156 m_handler->disconnected(this);
161 _D("Remove event[%llu]", m_event_id);
162 m_loop->remove_event(m_event_id, true);
168 _D("Release socket[%d]", m_socket->get_fd());
176 bool channel::send(message *msg)
179 int cur_buffer_size = 0;
181 retv_if(!m_loop, false);
183 while (retry_cnt < 3) {
184 cur_buffer_size = m_socket->get_current_buffer_size();
185 if (cur_buffer_size <= SYSTEMD_SOCK_BUF_SIZE)
190 retvm_if(retry_cnt >= 3, false, "Socket buffer[%d] is exceeded", cur_buffer_size);
192 send_event_handler *handler = new(std::nothrow) send_event_handler(this, msg);
193 retvm_if(!handler, false, "Failed to allocate memory");
197 m_loop->add_event(m_socket->get_fd(),
198 (EVENT_OUT | EVENT_HUP | EVENT_NVAL) , handler);
203 bool channel::send_sync(message *msg)
205 retvm_if(!msg, false, "Invalid message");
206 retvm_if(msg->size() >= MAX_MSG_CAPACITY, true, "Invaild message size[%u]", msg->size());
209 char *buf = msg->body();
212 size = m_socket->send(reinterpret_cast<void *>(msg->header()),
213 sizeof(message_header), true);
214 retvm_if(size <= 0, false, "Failed to send header");
216 /* if body size is zero, skip to send body message */
217 retv_if(msg->size() == 0, true);
220 size = m_socket->send(buf, msg->size(), true);
221 retvm_if(size <= 0, false, "Failed to send body");
226 bool channel::read(void)
228 retv_if(!m_loop, false);
230 read_event_handler *handler = new(std::nothrow) read_event_handler(this);
231 retvm_if(!handler, false, "Failed to allocate memory");
233 m_loop->add_event(m_socket->get_fd(), (EVENT_IN | EVENT_HUP | EVENT_NVAL), handler);
238 bool channel::read_sync(message &msg, bool select)
240 message_header header;
242 char buf[MAX_MSG_CAPACITY];
245 size = m_socket->recv(&header, sizeof(message_header), select);
246 retv_if(size <= 0, false);
248 /* check error from header */
249 if (m_handler && header.err != 0) {
250 m_handler->error_caught(this, header.err);
251 msg.header()->err = header.err;
256 if (header.length >= MAX_MSG_CAPACITY) {
257 _E("header.length error %u", header.length);
261 if (header.length > 0) {
262 size = m_socket->recv(&buf, header.length, select);
263 retv_if(size <= 0, false);
266 buf[header.length] = '\0';
267 msg.enclose(reinterpret_cast<const void *>(buf), header.length);
268 msg.set_type(header.type);
269 msg.header()->err = header.err;
272 m_handler->read(this, msg);
277 bool channel::is_connected(void)
279 return m_connected.load();
282 bool channel::set_option(int type, int value)
286 m_socket->set_buffer_size(type, value);
289 m_socket->set_buffer_size(type, value);
298 bool channel::get_option(int type, int &value) const
302 value = m_socket->get_current_buffer_size();
305 value = m_socket->get_buffer_size(type);
308 value = m_socket->get_buffer_size(type);
317 int channel::get_fd(void) const