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 40000
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())
102 /* disconnect() should not be called here */
105 void channel::bind(channel_handler *handler, event_loop *loop)
109 m_connected.store(true);
112 m_handler->connected(this);
115 void channel::bind(void)
118 m_event_id = m_loop->add_event(m_socket->get_fd(),
119 (EVENT_IN | EVENT_HUP | EVENT_NVAL),
120 dynamic_cast<channel_event_handler *>(m_handler));
123 bool channel::connect(channel_handler *handler, event_loop *loop)
125 if (!m_socket->connect())
132 void channel::disconnect(void)
134 ret_if(!is_connected());
135 m_connected.store(false);
138 m_handler->disconnected(this);
143 m_loop->remove_event(m_event_id, true);
154 bool channel::send(message *msg)
156 retv_if(!m_loop, false);
158 int cur_buffer_size = m_socket->get_current_buffer_size();
159 retv_if(cur_buffer_size > SYSTEMD_SOCK_BUF_SIZE, false);
161 send_event_handler *handler = new(std::nothrow) send_event_handler(this, msg);
162 retvm_if(!handler, false, "Failed to allocate memory");
166 m_loop->add_event(m_socket->get_fd(),
167 (EVENT_OUT | EVENT_HUP | EVENT_NVAL) , handler);
172 bool channel::send_sync(message *msg)
174 retv_if(!msg, false);
177 char *buf = msg->body();
180 size = m_socket->send(reinterpret_cast<void *>(msg->header()),
181 sizeof(message_header), true);
182 retv_if(size <= 0, false);
183 retv_if(msg->size() <= 0, true);
186 size = m_socket->send(buf, msg->size(), true);
187 retv_if(size <= 0, false);
192 bool channel::read(void)
194 retv_if(!m_loop, false);
196 read_event_handler *handler = new(std::nothrow) read_event_handler(this);
197 retvm_if(!handler, false, "Failed to allocate memory");
199 m_loop->add_event(m_socket->get_fd(), (EVENT_IN | EVENT_HUP | EVENT_NVAL), handler);
204 bool channel::read_sync(message &msg, bool select)
206 message_header header;
208 char buf[MAX_MSG_CAPACITY];
211 size = m_socket->recv(&header, sizeof(message_header), select);
212 retv_if(size <= 0, false);
214 /* check error from header */
215 if (m_handler && header.err != 0) {
216 m_handler->error_caught(this, header.err);
217 msg.header()->err = header.err;
222 if (header.length > 0) {
223 size = m_socket->recv(&buf, header.length, select);
224 retv_if(size <= 0, false);
227 buf[header.length] = '\0';
228 msg.enclose(reinterpret_cast<const void *>(buf), header.length);
229 msg.set_type(header.type);
230 msg.header()->err = header.err;
233 m_handler->read(this, msg);
238 bool channel::is_connected(void)
240 return m_connected.load();
243 bool channel::set_option(int type, int value)
247 m_socket->set_buffer_size(type, value);
250 m_socket->set_buffer_size(type, value);
259 bool channel::get_option(int type, int &value) const
263 value = m_socket->get_current_buffer_size();
266 value = m_socket->get_buffer_size(type);
269 value = m_socket->get_buffer_size(type);
278 int channel::get_fd(void) const
283 void channel::set_event_id(uint64_t id)