src/shared/csensor_event_dispatcher.cpp

   1 /*
   2  * libsensord-share
   3  *
   4  * Copyright (c) 2014 Samsung Electronics Co., Ltd.
   5  *
   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
   9  *
  10  * http://www.apache.org/licenses/LICENSE-2.0
  11  *
  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.
  17  *
  18  */
  19
  20 #include <csensor_event_dispatcher.h>
  21 #include <sensor_plugin_loader.h>
  22 #include <common.h>
  23 #include <sf_common.h>
  24 #include <vconf.h>
  25 #include <thread>
  26
  27 using std::thread;
  28
  29 #define MAX_PENDING_CONNECTION 32
  30
  31 csensor_event_dispatcher::csensor_event_dispatcher()
  32 : m_lcd_on(true)
  33 {
  34 }
  35
  36 csensor_event_dispatcher::~csensor_event_dispatcher() { }
  37
  38 bool csensor_event_dispatcher::run(void)
  39 {
  40         INFO("Starting Event Dispatcher");
  41
  42         if (!m_accept_socket.create(SOCK_SEQPACKET)) {
  43                 ERR("Listener Socket Creation failed in Server");
  44                 return false;
  45         }
  46
  47         if (!m_accept_socket.bind(EVENT_CHANNEL_PATH)) {
  48                 ERR("Listener Socket Binding failed in Server");
  49                 m_accept_socket.close();
  50                 return false;
  51         }
  52
  53         if (!m_accept_socket.listen(MAX_PENDING_CONNECTION)) {
  54                 ERR("Socket Listen failed in Server");
  55                 return false;
  56         }
  57
  58         thread accepter(&csensor_event_dispatcher::accept_connections, this);
  59         accepter.detach();
  60
  61         thread dispatcher(&csensor_event_dispatcher::dispatch_event, this);
  62         dispatcher.detach();
  63
  64         return true;
  65 }
  66
  67 void csensor_event_dispatcher::accept_event_channel(csocket client_socket)
  68 {
  69         int client_id;
  70         event_channel_ready_t event_channel_ready;
  71         cclient_info_manager &client_info_manager = get_client_info_manager();
  72         client_socket.set_connection_mode();
  73
  74         if (client_socket.recv(&client_id, sizeof(client_id)) <= 0) {
  75                 ERR("Failed to receive client id on socket fd[%d]", client_socket.get_socket_fd());
  76                 return;
  77         }
  78
  79         client_socket.set_transfer_mode();
  80         AUTOLOCK(m_mutex);
  81
  82         if (!get_client_info_manager().set_event_socket(client_id, client_socket)) {
  83                 ERR("Failed to store event socket[%d] for %s", client_socket.get_socket_fd(),
  84                         client_info_manager.get_client_info(client_id));
  85                 return;
  86         }
  87
  88         event_channel_ready.magic = EVENT_CHANNEL_MAGIC;
  89         event_channel_ready.client_id = client_id;
  90
  91         INFO("Event channel is accepted for %s on socket[%d]",
  92                  client_info_manager.get_client_info(client_id), client_socket.get_socket_fd());
  93
  94         if (client_socket.send(&event_channel_ready, sizeof(event_channel_ready)) <= 0) {
  95                 ERR("Failed to send event_channel_ready packet to %s on socket fd[%d]",
  96                         client_info_manager.get_client_info(client_id), client_socket.get_socket_fd());
  97                 return;
  98         }
  99 }
 100
 101 void csensor_event_dispatcher::accept_connections(void)
 102 {
 103         INFO("Event channel acceptor is started.");
 104
 105         while (true) {
 106                 csocket client_socket;
 107
 108                 if (!m_accept_socket.accept(client_socket)) {
 109                         ERR("Accepting socket failed in Server");
 110                         continue;
 111                 }
 112
 113                 INFO("New client connected (socket_fd : %d)", client_socket.get_socket_fd());
 114                 thread event_channel_creator(&csensor_event_dispatcher::accept_event_channel, this, client_socket);
 115                 event_channel_creator.detach();
 116         }
 117 }
 118
 119 void csensor_event_dispatcher::dispatch_event(void)
 120 {
 121         const int MAX_EVENT_PER_SENSOR = 16;
 122         const int MAX_SENSOR_EVENT = 1 + (sensor_plugin_loader::get_instance().get_virtual_sensors().size()
 123                                                                         * MAX_EVENT_PER_SENSOR);
 124         const int MAX_SYNTH_PER_SENSOR = 5;
 125         INFO("Event Dispatcher started");
 126         m_lcd_on = is_lcd_on();
 127
 128         if (vconf_notify_key_changed(VCONFKEY_PM_STATE, situation_watcher, this) != 0)
 129                 ERR("Fail to set notify callback for %s", VCONFKEY_PM_STATE);
 130
 131         while (true) {
 132                 bool is_hub_event = false;
 133                 event_situation situation;
 134                 void *seed_event = get_event_queue().pop();
 135                 unsigned int event_type = *((unsigned int *)(seed_event));
 136
 137                 if (is_sensorhub_event(event_type))
 138                         is_hub_event = true;
 139
 140                 if (m_lcd_on)
 141                         situation = SITUATION_LCD_ON;
 142                 else
 143                         situation = SITUATION_LCD_OFF;
 144
 145                 if (is_hub_event) {
 146                         sensorhub_event_t *sensorhub_event = (sensorhub_event_t *)seed_event;
 147                         sensorhub_event->situation = situation;
 148                         send_sensor_events(sensorhub_event, 1, true, situation);
 149                 } else {
 150                         sensor_event_t sensor_events[MAX_SENSOR_EVENT];
 151                         unsigned int event_cnt = 0;
 152                         sensor_events[event_cnt++] = *((sensor_event_t *)seed_event);
 153
 154                         virtual_sensors v_sensors = get_active_virtual_sensors();
 155                         virtual_sensors::iterator it_v_sensor;
 156                         it_v_sensor = v_sensors.begin();
 157                         vector<sensor_event_t> v_sensor_events;
 158                         v_sensor_events.reserve(MAX_SYNTH_PER_SENSOR);
 159
 160                         while (it_v_sensor != v_sensors.end()) {
 161                                 int synthesized_cnt;
 162                                 v_sensor_events.clear();
 163                                 (*it_v_sensor)->synthesize(*((sensor_event_t *)seed_event), v_sensor_events);
 164                                 synthesized_cnt = v_sensor_events.size();
 165
 166                                 for (int i = 0; i < synthesized_cnt; ++i)
 167                                         sensor_events[event_cnt++] = v_sensor_events[i];
 168
 169                                 ++it_v_sensor;
 170                         }
 171
 172                         sort_sensor_events(sensor_events, event_cnt);
 173
 174                         for (int i = 0; i < event_cnt; ++i) {
 175                                 sensor_events[i].situation = situation;
 176
 177                                 if (is_record_event(sensor_events[i].event_type))
 178                                         put_last_event(sensor_events[i].event_type, sensor_events[i]);
 179                         }
 180
 181                         send_sensor_events(sensor_events, event_cnt, false, situation);
 182                 }
 183
 184                 if (is_hub_event)
 185                         delete (sensorhub_event_t *)seed_event;
 186                 else
 187                         delete (sensor_event_t *)seed_event;
 188         }
 189 }
 190
 191 void csensor_event_dispatcher::send_sensor_events(void *events, int event_cnt, bool is_hub_event, event_situation situation)
 192 {
 193         sensor_event_t *sensor_events;
 194         sensorhub_event_t *sensor_hub_events;
 195         cclient_info_manager &client_info_manager = get_client_info_manager();
 196
 197         if (is_hub_event)
 198                 sensor_hub_events = (sensorhub_event_t *)events;
 199         else
 200                 sensor_events = (sensor_event_t *)events;
 201
 202         for (int i = 0; i < event_cnt; ++i) {
 203                 client_id_vec id_vec;
 204                 unsigned int event_type;
 205
 206                 if (is_hub_event)
 207                         event_type = sensor_hub_events[i].event_type;
 208                 else
 209                         event_type = sensor_events[i].event_type;
 210
 211                 client_info_manager.get_listener_ids(event_type, situation, id_vec);
 212                 client_id_vec::iterator it_client_id;
 213                 it_client_id = id_vec.begin();
 214
 215                 while (it_client_id != id_vec.end()) {
 216                         csocket client_socket;
 217                         client_info_manager.get_event_socket(*it_client_id, client_socket);
 218                         bool ret;
 219
 220                         if (is_hub_event)
 221                                 ret = (client_socket.send(sensor_hub_events + i, sizeof(sensorhub_event_t)) > 0);
 222                         else
 223                                 ret = (client_socket.send(sensor_events + i, sizeof(sensor_event_t)) > 0);
 224
 225                         if (ret)
 226                                 DBG("Event[0x%x] sent to %s on socket[%d]", event_type, client_info_manager.get_client_info(*it_client_id), client_socket.get_socket_fd());
 227                         else
 228                                 ERR("Failed to send event[0x%x] to %s on socket[%d]", event_type, client_info_manager.get_client_info(*it_client_id), client_socket.get_socket_fd());
 229
 230                         ++it_client_id;
 231                 }
 232         }
 233 }
 234
 235 bool csensor_event_dispatcher::is_lcd_on(void)
 236 {
 237         int lcd_state;
 238
 239         if (vconf_get_int(VCONFKEY_PM_STATE, &lcd_state) != 0) {
 240                 ERR("Can't get the value of VCONFKEY_PM_STATE");
 241                 return true;
 242         }
 243
 244         if (lcd_state == VCONFKEY_PM_STATE_LCDOFF)
 245                 return false;
 246
 247         return true;
 248 }
 249
 250 cclient_info_manager &csensor_event_dispatcher::get_client_info_manager(void)
 251 {
 252         return cclient_info_manager::get_instance();
 253 }
 254
 255 csensor_event_queue &csensor_event_dispatcher::get_event_queue(void)
 256 {
 257         return csensor_event_queue::get_instance();
 258 }
 259
 260 bool csensor_event_dispatcher::is_record_event(unsigned int event_type)
 261 {
 262         switch (event_type) {
 263         case ACCELEROMETER_EVENT_ROTATION_CHECK:
 264                 return true;
 265                 break;
 266         default:
 267                 break;
 268         }
 269
 270         return false;
 271 }
 272
 273 void csensor_event_dispatcher::put_last_event(unsigned int event_type, const sensor_event_t &event)
 274 {
 275         AUTOLOCK(m_last_events_mutex);
 276         m_last_events[event_type] = event;
 277 }
 278
 279 bool csensor_event_dispatcher::get_last_event(unsigned int event_type, sensor_event_t &event)
 280 {
 281         AUTOLOCK(m_last_events_mutex);
 282         event_type_last_event_map::iterator it_event;
 283         it_event = m_last_events.find(event_type);
 284
 285         if (it_event == m_last_events.end())
 286                 return false;
 287
 288         event = it_event->second;
 289         return true;
 290 }
 291
 292 bool csensor_event_dispatcher::has_active_virtual_sensor(virtual_sensor *sensor)
 293 {
 294         AUTOLOCK(m_active_virtual_sensors_mutex);
 295         virtual_sensors::iterator it_v_sensor;
 296         it_v_sensor = find(m_active_virtual_sensors.begin(), m_active_virtual_sensors.end(), sensor);
 297         return (it_v_sensor != m_active_virtual_sensors.end());
 298 }
 299
 300 virtual_sensors csensor_event_dispatcher::get_active_virtual_sensors(void)
 301 {
 302         AUTOLOCK(m_active_virtual_sensors_mutex);
 303         return m_active_virtual_sensors;
 304 }
 305
 306 bool csensor_event_dispatcher::compare_by_timestamp(const sensor_event_t &a, const sensor_event_t &b)
 307 {
 308         return a.data.timestamp < b.data.timestamp;
 309 }
 310
 311 void csensor_event_dispatcher::sort_sensor_events(sensor_event_t *events, unsigned int cnt)
 312 {
 313         std::sort(events, events + cnt, compare_by_timestamp);
 314 }
 315
 316 void csensor_event_dispatcher::request_last_event(int client_id, const sensor_type_t sensor)
 317 {
 318         cclient_info_manager &client_info_manager = get_client_info_manager();
 319         event_type_vector event_vec;
 320         csocket client_socket;
 321
 322         if (client_info_manager.get_registered_events(client_id, sensor, event_vec)) {
 323                 client_info_manager.get_event_socket(client_id, client_socket);
 324                 event_type_vector::iterator it_event;
 325                 it_event = event_vec.begin();
 326
 327                 while (it_event != event_vec.end()) {
 328                         sensor_event_t event;
 329
 330                         if (is_record_event(*it_event) && get_last_event(*it_event, event)) {
 331                                 if (client_socket.send(&event, sizeof(event)) > 0)
 332                                         INFO("Send the last event[0x%x] to %s on socket[%d]", event.event_type,
 333                                                 client_info_manager.get_client_info(client_id), client_socket.get_socket_fd());
 334                                 else
 335                                         ERR("Failed to send event[0x%x] to %s on socket[%d]", event.event_type,
 336                                                 client_info_manager.get_client_info(client_id), client_socket.get_socket_fd());
 337                         }
 338
 339                         ++it_event;
 340                 }
 341         }
 342 }
 343
 344 bool csensor_event_dispatcher::add_active_virtual_sensor(virtual_sensor *sensor)
 345 {
 346         AUTOLOCK(m_active_virtual_sensors_mutex);
 347
 348         if (has_active_virtual_sensor(sensor)) {
 349                 ERR("[%s] sensor is already added on active virtual sensors", sensor->get_name());
 350                 return false;
 351         }
 352
 353         m_active_virtual_sensors.push_back(sensor);
 354         return true;
 355 }
 356
 357 bool csensor_event_dispatcher::delete_active_virtual_sensor(virtual_sensor *sensor)
 358 {
 359         AUTOLOCK(m_active_virtual_sensors_mutex);
 360         virtual_sensors::iterator it_v_sensor;
 361         it_v_sensor = find(m_active_virtual_sensors.begin(), m_active_virtual_sensors.end(), sensor);
 362
 363         if (it_v_sensor == m_active_virtual_sensors.end()) {
 364                 ERR("Fail to delete non-existent [%s] sensor on active virtual sensors", sensor->get_name());
 365                 return false;
 366         }
 367
 368         m_active_virtual_sensors.erase(it_v_sensor);
 369         return true;
 370 }
 371
 372 void csensor_event_dispatcher::situation_watcher(keynode_t *node, void *user_data)
 373 {
 374         csensor_event_dispatcher *dispatcher = (csensor_event_dispatcher *) user_data;
 375
 376         if (!strcmp(vconf_keynode_get_name(node), VCONFKEY_PM_STATE))
 377                 dispatcher->m_lcd_on = dispatcher->is_lcd_on();
 378 }