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.
20 #include "sensor_listener.h"
22 #include <channel_handler.h>
23 #include <sensor_log.h>
24 #include <sensor_types.h>
25 #include <command_types.h>
26 #include <ipc_client.h>
28 using namespace sensor;
30 class listener_handler : public ipc::channel_handler
33 listener_handler(sensor_listener *listener)
34 : m_listener(listener)
36 void connected(ipc::channel *ch) {}
37 void disconnected(ipc::channel *ch)
39 /* If channel->disconnect() is not explicitly called,
40 * listener will be restored */
41 m_listener->restore();
44 void read(ipc::channel *ch, ipc::message &msg)
46 switch (msg.header()->type) {
47 case CMD_LISTENER_EVENT:
48 if (m_listener->get_event_handler())
49 m_listener->get_event_handler()->read(ch, msg);
51 case CMD_LISTENER_ACC_EVENT:
52 if (m_listener->get_accuracy_handler())
53 m_listener->get_accuracy_handler()->read(ch, msg);
58 void read_complete(ipc::channel *ch) {}
59 void error_caught(ipc::channel *ch, int error) {}
62 sensor_listener *m_listener;
65 sensor_listener::sensor_listener(sensor_t sensor)
67 , m_sensor(reinterpret_cast<sensor_info *>(sensor))
80 sensor_listener::~sensor_listener()
85 bool sensor_listener::init(void)
87 m_client = new(std::nothrow) ipc::ipc_client(SENSOR_CHANNEL_PATH);
88 retvm_if(!m_client, false, "Failed to allocate memory");
90 m_handler = new(std::nothrow) listener_handler(this);
107 void sensor_listener::deinit(void)
117 m_attributes.clear();
120 int sensor_listener::get_id(void)
125 sensor_t sensor_listener::get_sensor(void)
127 return static_cast<sensor_t>(m_sensor);
130 void sensor_listener::restore(void)
132 ret_if(!is_connected());
133 retm_if(!connect(), "Failed to restore listener");
135 /* Restore attributes/status */
136 if (m_started.load())
139 auto interval = m_attributes.find(SENSORD_ATTRIBUTE_INTERVAL);
140 if (interval != m_attributes.end())
141 set_interval(m_attributes[SENSORD_ATTRIBUTE_INTERVAL]);
143 auto latency = m_attributes.find(SENSORD_ATTRIBUTE_MAX_BATCH_LATENCY);
144 if (latency != m_attributes.end())
145 set_max_batch_latency(m_attributes[SENSORD_ATTRIBUTE_MAX_BATCH_LATENCY]);
147 _D("Restored listener[%d]", get_id());
150 bool sensor_listener::connect(void)
152 m_cmd_channel = m_client->connect(NULL);
153 retvm_if(!m_cmd_channel, false, "Failed to connect to server");
155 m_evt_channel = m_client->connect(m_handler, &m_loop);
156 retvm_if(!m_evt_channel, false, "Failed to connect to server");
160 cmd_listener_connect_t buf = {0, };
162 memcpy(buf.sensor, m_sensor->get_uri().c_str(), m_sensor->get_uri().size());
163 msg.set_type(CMD_LISTENER_CONNECT);
164 msg.enclose((const char *)&buf, sizeof(buf));
165 m_evt_channel->send_sync(&msg);
167 m_evt_channel->read_sync(reply);
168 reply.disclose((char *)&buf);
170 m_id = buf.listener_id;
171 m_connected.store(true);
173 _D("Listener ID[%d]", get_id());
178 void sensor_listener::disconnect(void)
180 ret_if(!is_connected());
181 m_connected.store(false);
186 msg.set_type(CMD_LISTENER_DISCONNECT);
187 m_evt_channel->send_sync(&msg);
189 m_evt_channel->read_sync(reply);
190 m_evt_channel->disconnect();
192 delete m_evt_channel;
193 m_evt_channel = NULL;
195 m_cmd_channel->disconnect();
196 delete m_cmd_channel;
197 m_cmd_channel = NULL;
199 _I("Disconnected[%d]", get_id());
202 bool sensor_listener::is_connected(void)
204 return m_connected.load();
207 ipc::channel_handler *sensor_listener::get_event_handler(void)
209 return m_evt_handler;
212 void sensor_listener::set_event_handler(ipc::channel_handler *handler)
214 m_evt_handler = handler;
217 void sensor_listener::unset_event_handler(void)
219 delete m_evt_handler;
220 m_evt_handler = NULL;
223 ipc::channel_handler *sensor_listener::get_accuracy_handler(void)
225 return m_acc_handler;
228 void sensor_listener::set_accuracy_handler(ipc::channel_handler *handler)
230 m_acc_handler = handler;
233 void sensor_listener::unset_accuracy_handler(void)
235 delete m_acc_handler;
236 m_acc_handler = NULL;
239 int sensor_listener::start(void)
243 cmd_listener_start_t buf;
245 retvm_if(!m_cmd_channel, -EINVAL, "Failed to connect to server");
247 buf.listener_id = m_id;
248 msg.set_type(CMD_LISTENER_START);
249 msg.enclose((char *)&buf, sizeof(buf));
251 m_cmd_channel->send_sync(&msg);
252 m_cmd_channel->read_sync(reply);
254 if (reply.header()->err < 0)
255 return reply.header()->err;
257 m_started.store(true);
262 int sensor_listener::stop(void)
266 cmd_listener_stop_t buf;
268 retvm_if(!m_cmd_channel, -EINVAL, "Failed to connect to server");
269 retvm_if(!m_started.load(), -EAGAIN, "Already stopped");
271 buf.listener_id = m_id;
272 msg.set_type(CMD_LISTENER_STOP);
273 msg.enclose((char *)&buf, sizeof(buf));
275 m_cmd_channel->send_sync(&msg);
276 m_cmd_channel->read_sync(reply);
278 if (reply.header()->err < 0)
279 return reply.header()->err;
281 m_started.store(false);
286 int sensor_listener::get_interval(void)
288 auto it = m_attributes.find(SENSORD_ATTRIBUTE_INTERVAL);
289 retv_if(it == m_attributes.end(), -1);
291 return m_attributes[SENSORD_ATTRIBUTE_INTERVAL];
294 int sensor_listener::get_max_batch_latency(void)
296 auto it = m_attributes.find(SENSORD_ATTRIBUTE_MAX_BATCH_LATENCY);
297 retv_if(it == m_attributes.end(), -1);
299 return m_attributes[SENSORD_ATTRIBUTE_MAX_BATCH_LATENCY];
302 int sensor_listener::get_pause_policy(void)
304 auto it = m_attributes.find(SENSORD_ATTRIBUTE_PAUSE_POLICY);
305 retv_if(it == m_attributes.end(), -1);
307 return m_attributes[SENSORD_ATTRIBUTE_PAUSE_POLICY];
310 int sensor_listener::get_passive_mode(void)
312 auto it = m_attributes.find(SENSORD_ATTRIBUTE_PASSIVE_MODE);
313 retv_if(it == m_attributes.end(), -1);
315 return m_attributes[SENSORD_ATTRIBUTE_PASSIVE_MODE];
318 int sensor_listener::set_interval(unsigned int interval)
322 /* TODO: move this logic to server */
324 _interval = DEFAULT_INTERVAL;
325 else if (interval < (unsigned int)m_sensor->get_min_interval())
326 _interval = m_sensor->get_min_interval();
328 _interval = interval;
330 return set_attribute(SENSORD_ATTRIBUTE_INTERVAL, _interval);
333 int sensor_listener::set_max_batch_latency(unsigned int max_batch_latency)
335 return set_attribute(SENSORD_ATTRIBUTE_MAX_BATCH_LATENCY, max_batch_latency);
338 int sensor_listener::set_passive_mode(bool passive)
340 return set_attribute(SENSORD_ATTRIBUTE_PASSIVE_MODE, passive);
343 int sensor_listener::flush(void)
345 return set_attribute(SENSORD_ATTRIBUTE_FLUSH, 1);
348 int sensor_listener::set_attribute(int attribute, int value)
352 cmd_listener_attr_int_t buf;
354 retvm_if(!m_cmd_channel, false, "Failed to connect to server");
356 buf.listener_id = m_id;
357 buf.attribute = attribute;
359 msg.set_type(CMD_LISTENER_ATTR_INT);
360 msg.enclose((char *)&buf, sizeof(buf));
362 m_cmd_channel->send_sync(&msg);
363 m_cmd_channel->read_sync(reply);
365 if (reply.header()->err < 0)
366 return reply.header()->err;
368 m_attributes[attribute] = value;
373 int sensor_listener::set_attribute(int attribute, const char *value, int len)
377 cmd_listener_attr_str_t buf;
379 retvm_if(!m_cmd_channel, false, "Failed to connect to server");
381 msg.set_type(CMD_LISTENER_ATTR_STR);
382 buf.listener_id = m_id;
383 buf.attribute = attribute;
384 memcpy(buf.value, value, len);
387 msg.enclose((char *)&buf, sizeof(buf) + len);
389 m_cmd_channel->send_sync(&msg);
390 m_cmd_channel->read_sync(reply);
392 return reply.header()->err;
395 int sensor_listener::get_sensor_data(sensor_data_t *data)
399 cmd_listener_get_data_t buf;
401 retvm_if(!m_cmd_channel, false, "Failed to connect to server");
403 buf.listener_id = m_id;
404 msg.set_type(CMD_LISTENER_GET_DATA);
405 msg.enclose((char *)&buf, sizeof(buf));
407 m_cmd_channel->send_sync(&msg);
408 m_cmd_channel->read_sync(reply);
410 reply.disclose((char *)&buf);
411 int size = sizeof(sensor_data_t);
413 if (buf.len > size || buf.len < 0) {
415 data->value_count = 0;
416 /* TODO: it should return OP_ERROR */
420 memcpy(data, &buf.data, buf.len);