src/server/sensor_manager.cpp

   1 /*
   2  * sensord
   3  *
   4  * Copyright (c) 2017 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 "sensor_manager.h"
  21
  22 #include <unistd.h>
  23 #include <sensor_log.h>
  24 #include <string>
  25 #include <vector>
  26 #include <memory>
  27 #include <algorithm>
  28
  29 #include "sensor_event_handler.h"
  30 #include "sensor_loader.h"
  31 #include "physical_sensor_handler.h"
  32 #include "fusion_sensor_handler.h"
  33 #include "external_sensor_handler.h"
  34 #include "fusion_sensor_handler.h"
  35
  36 using namespace sensor;
  37
  38 #define DEVICE_HAL_DIR_PATH LIBDIR "/sensor/hal"
  39 #define PHYSICAL_SENSOR_DIR_PATH LIBDIR "/sensor/physical"
  40 #define VIRTUAL_SENSOR_DIR_PATH LIBDIR "/sensor/fusion"
  41 #define EXTERNAL_SENSOR_DIR_PATH LIBDIR "/sensor/external"
  42
  43 static device_sensor_registry_t devices;
  44 static physical_sensor_registry_t physical_sensors;
  45 static fusion_sensor_registry_t fusion_sensors;
  46 static external_sensor_registry_t external_sensors;
  47
  48 sensor_manager::sensor_manager(ipc::event_loop *loop)
  49 : m_loop(loop)
  50 {
  51 }
  52
  53 sensor_manager::~sensor_manager()
  54 {
  55 }
  56
  57 bool sensor_manager::init(void)
  58 {
  59         m_loader.load_hal(DEVICE_HAL_DIR_PATH, devices);
  60         m_loader.load_physical_sensor(PHYSICAL_SENSOR_DIR_PATH, physical_sensors);
  61         m_loader.load_fusion_sensor(VIRTUAL_SENSOR_DIR_PATH, fusion_sensors);
  62         m_loader.load_external_sensor(EXTERNAL_SENSOR_DIR_PATH, external_sensors);
  63
  64         retvm_if(devices.empty(), false, "There is no sensors");
  65
  66         /* TODO: support dynamic sensor */
  67         create_physical_sensors(devices, physical_sensors);
  68         create_fusion_sensors(fusion_sensors);
  69         create_external_sensors(external_sensors);
  70
  71         init_sensors();
  72
  73         show();
  74
  75         return true;
  76 }
  77
  78 bool sensor_manager::deinit(void)
  79 {
  80         for (auto it = m_sensors.begin(); it != m_sensors.end(); ++it)
  81                 delete it->second;
  82         m_sensors.clear();
  83
  84         external_sensors.clear();
  85         fusion_sensors.clear();
  86         physical_sensors.clear();
  87         devices.clear();
  88
  89         m_loader.unload();
  90
  91         return true;
  92 }
  93
  94 bool sensor_manager::is_supported(std::string uri)
  95 {
  96         for (auto it = m_sensors.begin(); it != m_sensors.end(); ++it) {
  97                 sensor_info info = it->second->get_sensor_info();
  98
  99                 if (info.get_uri() == uri)
 100                         return true;
 101         }
 102
 103         return false;
 104 }
 105
 106 bool sensor_manager::register_sensor(sensor_handler *sensor)
 107 {
 108         retvm_if(!sensor, false, "Invalid sensor");
 109
 110         sensor_info info = sensor->get_sensor_info();
 111
 112         auto it = m_sensors.find(info.get_uri());
 113         retvm_if(it != m_sensors.end(), false, "There is already a sensor with the same name");
 114
 115         m_sensors[info.get_uri()] = sensor;
 116
 117         _I("Registered[%s]", info.get_uri().c_str());
 118
 119         return true;
 120 }
 121
 122 void sensor_manager::deregister_sensor(const std::string uri)
 123 {
 124         auto it = m_sensors.find(uri);
 125         ret_if(it == m_sensors.end());
 126
 127         delete it->second;
 128         m_sensors.erase(it);
 129
 130         _I("Deregistered[%s]", uri.c_str());
 131 }
 132
 133 sensor_handler *sensor_manager::get_sensor_by_type(const std::string uri)
 134 {
 135         auto it = m_sensors.begin();
 136         for (; it != m_sensors.end(); ++it) {
 137                 std::size_t found = it->first.rfind(uri);
 138                 if (found != std::string::npos)
 139                         return it->second;
 140         }
 141
 142         return NULL;
 143 }
 144
 145 sensor_handler *sensor_manager::get_sensor(const std::string uri)
 146 {
 147         auto it = m_sensors.find(uri);
 148         retv_if(it == m_sensors.end(), NULL);
 149
 150         return m_sensors[uri];
 151 }
 152
 153 std::vector<sensor_handler *> sensor_manager::get_sensors(void)
 154 {
 155         std::vector<sensor_handler *> sensors;
 156
 157         for (auto it = m_sensors.begin(); it != m_sensors.end(); ++it)
 158                 sensors.push_back(it->second);
 159
 160         return sensors;
 161 }
 162
 163 void sensor_manager::create_physical_sensors(device_sensor_registry_t &devices,
 164                 physical_sensor_registry_t &psensors)
 165 {
 166         const sensor_info_t *info;
 167         physical_sensor_handler *psensor;
 168
 169         for (auto it = devices.begin(); it != devices.end(); ++it) {
 170                 int count = (*it)->get_sensors(&info);
 171
 172                 for (int i = 0; i < count; ++i) {
 173                         /* TODO: psensors */
 174                         psensor = new(std::nothrow) physical_sensor_handler(
 175                                         info[i], it->get(), info[i].id, NULL);
 176                         retm_if(!psensor, "Failed to allocate memory");
 177
 178                         sensor_info sinfo = psensor->get_sensor_info();
 179                         m_sensors[sinfo.get_uri()] = psensor;
 180                 }
 181         }
 182
 183 }
 184
 185 void sensor_manager::create_fusion_sensors(fusion_sensor_registry_t &fsensors)
 186 {
 187         const sensor_info2_t *info;
 188         fusion_sensor_handler *fsensor;
 189         std::vector<std::string> req_names;
 190
 191         for (auto it = fsensors.begin(); it != fsensors.end(); ++it) {
 192                 int count = (*it)->get_sensors(&info);
 193
 194                 for (int i = 0; i < count; ++i) {
 195                         bool support = true;
 196                         req_names.clear();
 197
 198                         fsensor = new(std::nothrow) fusion_sensor_handler(info[i], it->get());
 199                         retm_if(!fsensor, "Failed to allocate memory");
 200
 201                         (*it)->get_required_sensors(req_names);
 202                         for (unsigned int j = 0; j < req_names.size(); ++j) {
 203                                 sensor_handler *sensor;
 204                                 sensor = get_sensor_by_type(req_names[j]);
 205
 206                                 if (sensor == NULL) {
 207                                         support = false;
 208                                         break;
 209                                 }
 210
 211                                 fsensor->add_required_sensor(sensor);
 212                         }
 213
 214                         if (!support) {
 215                                 delete fsensor;
 216                                 /* TODO: remove plugin */
 217                                 continue;
 218                         }
 219
 220                         sensor_info sinfo = fsensor->get_sensor_info();
 221                         m_sensors[sinfo.get_uri()] = fsensor;
 222                 }
 223         }
 224 }
 225
 226 void sensor_manager::create_external_sensors(external_sensor_registry_t &esensors)
 227 {
 228         const sensor_info2_t *info;
 229         external_sensor_handler *esensor;
 230
 231         for (auto it = esensors.begin(); it != esensors.end(); ++it) {
 232                 int count = (*it)->get_sensors(&info);
 233
 234                 for (int i = 0; i < count; ++i) {
 235                         esensor = new(std::nothrow) external_sensor_handler(info[i], it->get());
 236                         retm_if(!esensor, "Failed to allocate memory");
 237
 238                         sensor_info sinfo = esensor->get_sensor_info();
 239                         m_sensors[sinfo.get_uri()] = esensor;
 240                 }
 241         }
 242 }
 243
 244 static void put_int_to_vec(std::vector<char> &data, int value)
 245 {
 246         char buf[sizeof(value)];
 247
 248         int *temp = (int *)buf;
 249         *temp = value;
 250
 251         std::copy(&buf[0], &buf[sizeof(buf)], back_inserter(data));
 252 }
 253
 254 /* packet format :
 255  * [count:4] {[size:4] [info:n] [size:4] [info:n] ...}
 256  */
 257 size_t sensor_manager::serialize(int sock_fd, char **bytes)
 258 {
 259         sensor_info info;
 260         std::vector<char> raw_list;
 261
 262         put_int_to_vec(raw_list, m_sensors.size());
 263
 264         for (auto it = m_sensors.begin(); it != m_sensors.end(); ++it) {
 265                 info = it->second->get_sensor_info();
 266
 267                 raw_data_t *raw = new(std::nothrow) raw_data_t();
 268                 retvm_if(!raw, -ENOMEM, "Failed to allocated memory");
 269
 270                 info.serialize(*raw);
 271
 272                 /* copy size */
 273                 put_int_to_vec(raw_list, raw->size());
 274
 275                 /* copy info */
 276                 std::copy(raw->begin(), raw->end(), std::back_inserter(raw_list));
 277
 278                 delete raw;
 279         }
 280
 281         *bytes = new(std::nothrow) char[raw_list.size()];
 282         retvm_if(!*bytes, -ENOMEM, "Failed to allocate memory");
 283
 284         std::copy(raw_list.begin(), raw_list.end(), *bytes);
 285
 286         return raw_list.size();
 287 }
 288
 289 void sensor_manager::init_sensors(void)
 290 {
 291         physical_sensor_handler *sensor;
 292
 293         for (auto it = m_sensors.begin(); it != m_sensors.end(); ++it) {
 294                 sensor = dynamic_cast<physical_sensor_handler *>(it->second);
 295                 if (sensor == NULL)
 296                         continue;
 297
 298                 /* it doesn't need to deregister handlers, they are consumed in event_loop */
 299                 register_handler(sensor);
 300         }
 301 }
 302
 303 void sensor_manager::register_handler(physical_sensor_handler *sensor)
 304 {
 305         ret_if(sensor->get_poll_fd() < 0);
 306
 307         sensor_event_handler *handler = new(std::nothrow) sensor_event_handler(sensor);
 308         retm_if(!handler, "Failed to allocate memory");
 309
 310         m_loop->add_event(sensor->get_poll_fd(),
 311                         ipc::EVENT_IN | ipc::EVENT_HUP | ipc::EVENT_NVAL, handler);
 312 }
 313
 314 void sensor_manager::show(void)
 315 {
 316         int index = 0;
 317
 318         _I("========== Loaded sensor information ==========\n");
 319         for (auto it = m_sensors.begin(); it != m_sensors.end(); ++it) {
 320                 sensor_info info = it->second->get_sensor_info();
 321
 322                 _I("Sensor #%d[%s]: ", ++index, it->first.c_str());
 323                 info.show();
 324         }
 325         _I("===============================================\n");
 326 }