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_LEGACY LIBDIR "/sensor"
  39 #define DEVICE_HAL_DIR_PATH LIBDIR "/sensor/hal"
  40 #define PHYSICAL_SENSOR_DIR_PATH LIBDIR "/sensor/physical"
  41 #define VIRTUAL_SENSOR_DIR_PATH LIBDIR "/sensor/fusion"
  42 #define EXTERNAL_SENSOR_DIR_PATH LIBDIR "/sensor/external"
  43
  44 static device_sensor_registry_t devices;
  45 static physical_sensor_registry_t physical_sensors;
  46 static fusion_sensor_registry_t fusion_sensors;
  47 static external_sensor_registry_t external_sensors;
  48
  49 sensor_manager::sensor_manager(ipc::event_loop *loop)
  50 : m_loop(loop)
  51 {
  52 }
  53
  54 sensor_manager::~sensor_manager()
  55 {
  56 }
  57
  58 bool sensor_manager::init(void)
  59 {
  60         m_loader.load_hal(DEVICE_HAL_DIR_PATH_LEGACY, devices);
  61         m_loader.load_hal(DEVICE_HAL_DIR_PATH, devices);
  62         m_loader.load_physical_sensor(PHYSICAL_SENSOR_DIR_PATH, physical_sensors);
  63         m_loader.load_fusion_sensor(VIRTUAL_SENSOR_DIR_PATH, fusion_sensors);
  64         m_loader.load_external_sensor(EXTERNAL_SENSOR_DIR_PATH, external_sensors);
  65
  66         retvm_if(devices.empty(), false, "There is no sensors");
  67
  68         /* TODO: support dynamic sensor */
  69         create_physical_sensors(devices, physical_sensors);
  70         create_fusion_sensors(fusion_sensors);
  71         create_external_sensors(external_sensors);
  72
  73         init_sensors();
  74
  75         show();
  76
  77         return true;
  78 }
  79
  80 bool sensor_manager::deinit(void)
  81 {
  82         for (auto it = m_sensors.begin(); it != m_sensors.end(); ++it)
  83                 delete it->second;
  84         m_sensors.clear();
  85
  86         external_sensors.clear();
  87         fusion_sensors.clear();
  88         physical_sensors.clear();
  89         devices.clear();
  90
  91         m_loader.unload();
  92
  93         return true;
  94 }
  95
  96 bool sensor_manager::is_supported(std::string uri)
  97 {
  98         for (auto it = m_sensors.begin(); it != m_sensors.end(); ++it) {
  99                 sensor_info info = it->second->get_sensor_info();
 100
 101                 if (info.get_uri() == uri)
 102                         return true;
 103         }
 104
 105         return false;
 106 }
 107
 108 bool sensor_manager::register_sensor(sensor_handler *sensor)
 109 {
 110         retvm_if(!sensor, false, "Invalid sensor");
 111
 112         sensor_info info = sensor->get_sensor_info();
 113
 114         auto it = m_sensors.find(info.get_uri());
 115         retvm_if(it != m_sensors.end(), false, "There is already a sensor with the same name");
 116
 117         m_sensors[info.get_uri()] = sensor;
 118
 119         _I("Registered[%s]", info.get_uri().c_str());
 120
 121         return true;
 122 }
 123
 124 void sensor_manager::deregister_sensor(const std::string uri)
 125 {
 126         auto it = m_sensors.find(uri);
 127         ret_if(it == m_sensors.end());
 128
 129         delete it->second;
 130         m_sensors.erase(it);
 131
 132         _I("Deregistered[%s]", uri.c_str());
 133 }
 134
 135 sensor_handler *sensor_manager::get_sensor_by_type(const std::string uri)
 136 {
 137         auto it = m_sensors.begin();
 138         for (; it != m_sensors.end(); ++it) {
 139                 std::size_t found = it->first.rfind(uri);
 140                 if (found != std::string::npos)
 141                         return it->second;
 142         }
 143
 144         return NULL;
 145 }
 146
 147 sensor_handler *sensor_manager::get_sensor(const std::string uri)
 148 {
 149         auto it = m_sensors.find(uri);
 150         retv_if(it == m_sensors.end(), NULL);
 151
 152         return m_sensors[uri];
 153 }
 154
 155 std::vector<sensor_handler *> sensor_manager::get_sensors(void)
 156 {
 157         std::vector<sensor_handler *> sensors;
 158
 159         for (auto it = m_sensors.begin(); it != m_sensors.end(); ++it)
 160                 sensors.push_back(it->second);
 161
 162         return sensors;
 163 }
 164
 165 void sensor_manager::create_physical_sensors(device_sensor_registry_t &devices,
 166                 physical_sensor_registry_t &psensors)
 167 {
 168         const sensor_info_t *info;
 169         physical_sensor_handler *psensor;
 170
 171         for (auto it = devices.begin(); it != devices.end(); ++it) {
 172                 int count = (*it)->get_sensors(&info);
 173
 174                 for (int i = 0; i < count; ++i) {
 175                         /* TODO: psensors */
 176                         psensor = new(std::nothrow) physical_sensor_handler(
 177                                         info[i], it->get(), info[i].id, NULL);
 178                         retm_if(!psensor, "Failed to allocate memory");
 179
 180                         sensor_info sinfo = psensor->get_sensor_info();
 181                         m_sensors[sinfo.get_uri()] = psensor;
 182                 }
 183         }
 184
 185 }
 186
 187 void sensor_manager::create_fusion_sensors(fusion_sensor_registry_t &fsensors)
 188 {
 189         const sensor_info2_t *info;
 190         fusion_sensor_handler *fsensor;
 191         std::vector<std::string> req_names;
 192
 193         for (auto it = fsensors.begin(); it != fsensors.end(); ++it) {
 194                 int count = (*it)->get_sensors(&info);
 195
 196                 for (int i = 0; i < count; ++i) {
 197                         bool support = true;
 198                         req_names.clear();
 199
 200                         fsensor = new(std::nothrow) fusion_sensor_handler(info[i], it->get());
 201                         retm_if(!fsensor, "Failed to allocate memory");
 202
 203                         (*it)->get_required_sensors(req_names);
 204                         for (unsigned int j = 0; j < req_names.size(); ++j) {
 205                                 sensor_handler *sensor;
 206                                 sensor = get_sensor_by_type(req_names[j]);
 207
 208                                 if (sensor == NULL) {
 209                                         support = false;
 210                                         break;
 211                                 }
 212
 213                                 fsensor->add_required_sensor(sensor);
 214                         }
 215
 216                         if (!support) {
 217                                 delete fsensor;
 218                                 /* TODO: remove plugin */
 219                                 continue;
 220                         }
 221
 222                         sensor_info sinfo = fsensor->get_sensor_info();
 223                         m_sensors[sinfo.get_uri()] = fsensor;
 224                 }
 225         }
 226 }
 227
 228 void sensor_manager::create_external_sensors(external_sensor_registry_t &esensors)
 229 {
 230         const sensor_info2_t *info;
 231         external_sensor_handler *esensor;
 232
 233         for (auto it = esensors.begin(); it != esensors.end(); ++it) {
 234                 int count = (*it)->get_sensors(&info);
 235
 236                 for (int i = 0; i < count; ++i) {
 237                         esensor = new(std::nothrow) external_sensor_handler(info[i], it->get());
 238                         retm_if(!esensor, "Failed to allocate memory");
 239
 240                         sensor_info sinfo = esensor->get_sensor_info();
 241                         m_sensors[sinfo.get_uri()] = esensor;
 242                 }
 243         }
 244 }
 245
 246 static void put_int_to_vec(std::vector<char> &data, int value)
 247 {
 248         char buf[sizeof(value)];
 249
 250         int *temp = (int *)buf;
 251         *temp = value;
 252
 253         std::copy(&buf[0], &buf[sizeof(buf)], back_inserter(data));
 254 }
 255
 256 /* packet format :
 257  * [count:4] {[size:4] [info:n] [size:4] [info:n] ...}
 258  */
 259 size_t sensor_manager::serialize(int sock_fd, char **bytes)
 260 {
 261         sensor_info info;
 262         std::vector<char> raw_list;
 263
 264         put_int_to_vec(raw_list, m_sensors.size());
 265
 266         for (auto it = m_sensors.begin(); it != m_sensors.end(); ++it) {
 267                 info = it->second->get_sensor_info();
 268
 269                 raw_data_t *raw = new(std::nothrow) raw_data_t();
 270                 retvm_if(!raw, -ENOMEM, "Failed to allocated memory");
 271
 272                 info.serialize(*raw);
 273
 274                 /* copy size */
 275                 put_int_to_vec(raw_list, raw->size());
 276
 277                 /* copy info */
 278                 std::copy(raw->begin(), raw->end(), std::back_inserter(raw_list));
 279
 280                 delete raw;
 281         }
 282
 283         *bytes = new(std::nothrow) char[raw_list.size()];
 284         retvm_if(!*bytes, -ENOMEM, "Failed to allocate memory");
 285
 286         std::copy(raw_list.begin(), raw_list.end(), *bytes);
 287
 288         return raw_list.size();
 289 }
 290
 291 void sensor_manager::init_sensors(void)
 292 {
 293         physical_sensor_handler *sensor;
 294
 295         for (auto it = m_sensors.begin(); it != m_sensors.end(); ++it) {
 296                 sensor = dynamic_cast<physical_sensor_handler *>(it->second);
 297                 if (sensor == NULL)
 298                         continue;
 299
 300                 /* it doesn't need to deregister handlers, they are consumed in event_loop */
 301                 register_handler(sensor);
 302         }
 303 }
 304
 305 void sensor_manager::register_handler(physical_sensor_handler *sensor)
 306 {
 307         ret_if(sensor->get_poll_fd() < 0);
 308
 309         sensor_event_handler *handler = new(std::nothrow) sensor_event_handler(sensor);
 310         retm_if(!handler, "Failed to allocate memory");
 311
 312         m_loop->add_event(sensor->get_poll_fd(),
 313                         ipc::EVENT_IN | ipc::EVENT_HUP | ipc::EVENT_NVAL, handler);
 314 }
 315
 316 void sensor_manager::show(void)
 317 {
 318         int index = 0;
 319
 320         _I("========== Loaded sensor information ==========\n");
 321         for (auto it = m_sensors.begin(); it != m_sensors.end(); ++it) {
 322                 sensor_info info = it->second->get_sensor_info();
 323
 324                 _I("Sensor #%d[%s]: ", ++index, it->first.c_str());
 325                 info.show();
 326         }
 327         _I("===============================================\n");
 328 }