src/policy_manager/policy_manager.cpp

   1 /*
   2  * Copyright (c) 2018 TOYOTA MOTOR CORPORATION
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <fstream>
  18 #include <sstream>
  19 #include <istream>
  20 #include <thread>
  21 #include <map>
  22 #include <algorithm>
  23 #include <systemd/sd-event.h>
  24 #include <json-c/json.h>
  25 #include "policy_manager.hpp"
  26 #include "hmi-debug.h"
  27
  28 extern "C"
  29 {
  30 #define AFB_BINDING_VERSION 2
  31 #include <afb/afb-binding.h>
  32 #include "stm.h"
  33 }
  34
  35 namespace pm
  36 {
  37 static PolicyManager *g_context;
  38
  39 static int transitionStateWrapper(sd_event_source *source, void *data)
  40 {
  41     int ret = g_context->transitionState(source, data);
  42     return ret;
  43 }
  44
  45 static int timerEventWrapper(sd_event_source *source, uint64_t usec, void *data)
  46 {
  47     int ret = g_context->timerEvent(source, usec, data);
  48     return ret;
  49 }
  50
  51 } // namespace pm
  52
  53 PolicyManager::PolicyManager()
  54     : eventname2no(),
  55       categoryname2no(),
  56       areaname2no(),
  57       role2category(),
  58       category2role(),
  59       role2defaultarea()
  60 {}
  61
  62 int PolicyManager::initialize()
  63 {
  64     int ret = 0;
  65
  66     // Create convert map
  67     for (int i = StmEvtNoMin; i <= StmEvtNoMax; i++)
  68     {
  69         HMI_DEBUG("wm:pm", "event name:%s no:%d", kStmEventName[i], i);
  70         this->eventname2no[kStmEventName[i]] = i;
  71     }
  72
  73     for (int i = StmCtgNoMin; i <= StmCtgNoMax; i++)
  74     {
  75         HMI_DEBUG("wm:pm", "category name:%s no:%d", kStmCategoryName[i], i);
  76         this->categoryname2no[kStmCategoryName[i]] = i;
  77     }
  78
  79     for (int i = StmAreaNoMin; i <= StmAreaNoMax; i++)
  80     {
  81         HMI_DEBUG("wm:pm", "area name:%s no:%d", kStmAreaName[i], i);
  82         this->areaname2no[kStmAreaName[i]] = i;
  83     }
  84
  85     // Load roles.db
  86     ret = this->loadRoleDb();
  87     if (0 > ret)
  88     {
  89         HMI_ERROR("wm:pm", "Load roles.db Error!!");
  90         return ret;
  91     }
  92
  93     // Load layouts.db
  94     ret = this->loadLayoutDb();
  95     if (0 > ret)
  96     {
  97         HMI_ERROR("wm:pm", "Load layouts.db Error!!");
  98         return ret;
  99     }
 100
 101     // Initialize state which is managed by PolicyManager
 102     this->initializeState();
 103
 104     // Initialize StateTransitioner
 105     stmInitialize();
 106
 107     // Store instance
 108     pm::g_context = this;
 109
 110     return ret;
 111 }
 112
 113 void PolicyManager::registerCallback(CallbackTable callback)
 114 {
 115     this->callback.onStateTransitioned = callback.onStateTransitioned;
 116     this->callback.onError = callback.onError;
 117 }
 118
 119 int PolicyManager::setInputEventData(json_object *json_in)
 120 {
 121     // Check arguments
 122     if (nullptr == json_in)
 123     {
 124         HMI_ERROR("wm:pm", "Argument is NULL!!");
 125         return -1;
 126     }
 127
 128     // Get event from json_object
 129     const char *event = this->getStringFromJson(json_in, "event");
 130     int event_no = StmEvtNoNone;
 131     if (nullptr != event)
 132     {
 133         // Convert name to number
 134         auto itr = this->eventname2no.find(event);
 135         if (this->eventname2no.end() != itr)
 136         {
 137             event_no = this->eventname2no[event];
 138             HMI_DEBUG("wm:pm", "event(%s:%d)", event, event_no);
 139         }
 140         else
 141         {
 142             HMI_ERROR("wm:pm", "Invalid event name!!");
 143             return -1;
 144         }
 145     }
 146     else
 147     {
 148         HMI_ERROR("wm:pm", "Event is not set!!");
 149         return -1;
 150     }
 151
 152     // Get role from json_object
 153     const char *role = this->getStringFromJson(json_in, "role");
 154     int category_no = StmCtgNoNone;
 155     if (nullptr != role)
 156     {
 157         HMI_DEBUG("wm:pm", "role(%s)", role);
 158
 159         // Convert role to category
 160         std::string category = "";
 161         auto itr = this->role2category.find(role);
 162         if (this->role2category.end() != itr)
 163         {
 164             category = this->role2category[role];
 165         }
 166         else
 167         {
 168             itr = this->role2category.find("fallback");
 169             if (this->role2category.end() != itr)
 170             {
 171                 HMI_DEBUG("wm:pm", "Role:%s is not registered in roles.db, fallback as normal app", role);
 172                 category = this->role2category["fallback"];
 173             }
 174         }
 175
 176         if ("" != category)
 177         {
 178             // Convert name to number
 179             category_no = categoryname2no[category];
 180             HMI_DEBUG("wm:pm", "category(%s:%d)", category.c_str(), category_no);
 181         }
 182     }
 183
 184     if (StmCtgNoNone == category_no)
 185     {
 186         role = "";
 187     }
 188
 189     // Get areat from json_object
 190     const char *area = this->getStringFromJson(json_in, "area");
 191     int area_no = StmAreaNoNone;
 192     if (nullptr != area)
 193     {
 194         auto itr = this->areaname2no.find(area);
 195         if (this->areaname2no.end() != itr)
 196         {
 197             area_no = this->areaname2no[area];
 198             HMI_DEBUG("wm:pm", "area(%s:%d)", area, area_no);
 199         }
 200     }
 201
 202     // If role is set and area is not set, use default area
 203     if ((StmAreaNoNone == area_no) && (StmCtgNoNone != category_no))
 204     {
 205         std::string def_area = this->role2defaultarea[role];
 206         area_no = this->areaname2no[def_area];
 207         HMI_DEBUG("wm:pm", "area(%s:%d)", def_area.c_str(), area_no);
 208     }
 209
 210     // Set event info to the queue
 211     EventInfo event_info;
 212     int event_id = STM_CREATE_EVENT_ID(event_no, category_no, area_no);
 213     event_info.event = event_id;
 214     event_info.role = std::string(role);
 215     event_info.delay = 0;
 216     this->event_info_queue.push(event_info);
 217
 218     return 0;
 219 }
 220
 221 int PolicyManager::executeStateTransition()
 222 {
 223     int ret;
 224     EventInfo event_info;
 225
 226     while (!this->event_info_queue.empty())
 227     {
 228         // Get event info from queue and delete
 229         event_info = this->event_info_queue.front();
 230         this->event_info_queue.pop();
 231
 232         // Set event info for checking policy
 233         ret = this->setStateTransitionProcessToSystemd(event_info.event, event_info.delay, event_info.role);
 234     }
 235     return ret;
 236 }
 237
 238 void PolicyManager::undoState()
 239 {
 240     HMI_DEBUG("wm:pm", "Undo State !!!");
 241
 242     // Undo state of STM
 243     stmUndoState();
 244
 245     HMI_DEBUG("wm:pm", ">>>>>>>>>> BEFORE UNDO");
 246     this->dumpLayerState(this->crr_layers);
 247
 248     this->crr_layers = this->prv_layers;
 249
 250     HMI_DEBUG("wm:pm", ">>>>>>>>>> AFTER UNDO");
 251     this->dumpLayerState(this->crr_layers);
 252 }
 253
 254 void PolicyManager::initializeState()
 255 {
 256     this->initializeLayerState();
 257 }
 258
 259 void PolicyManager::initializeLayerState()
 260 {
 261     AreaState init_area;
 262     LayoutState init_layout;
 263     init_area.name = kStmAreaName[StmAreaNoNone];
 264     init_area.category = kStmCategoryName[StmCtgNoNone];
 265     init_area.role = "";
 266     init_layout.name = kStmLayoutName[StmLayoutNoNone];
 267     init_layout.area_list.push_back(init_area);
 268
 269     for (int i = StmLayerNoMin; i <= StmLayerNoMax; i++)
 270     {
 271         const char *layer_name = kStmLayerName[i];
 272         this->crr_layers[layer_name].name = layer_name;
 273         this->crr_layers[layer_name].layout_state = init_layout;
 274         this->crr_layers[layer_name].changed = false;
 275     }
 276
 277     this->prv_layers = this->crr_layers;
 278 }
 279
 280 void PolicyManager::addStateToJson(const char *name, bool changed,
 281                                    std::string state, json_object **json_out)
 282 {
 283     if ((nullptr == name) || (nullptr == json_out))
 284     {
 285         HMI_ERROR("wm:pm", "Invalid argument!!!");
 286         return;
 287     }
 288
 289     json_object_object_add(*json_out, "name", json_object_new_string(name));
 290     json_object_object_add(*json_out, "state", json_object_new_string(state.c_str()));
 291     json_object_object_add(*json_out, "changed", json_object_new_boolean(changed));
 292 }
 293
 294 void PolicyManager::addStateToJson(const char *layer_name, bool changed,
 295                                    AreaList area_list, json_object **json_out)
 296 {
 297     if ((nullptr == layer_name) || (nullptr == json_out))
 298     {
 299         HMI_ERROR("wm:pm", "Invalid argument!!!");
 300         return;
 301     }
 302
 303     json_object *json_areas = json_object_new_array();
 304     json_object *json_tmp;
 305     for (const auto &as : area_list)
 306     {
 307         json_tmp = json_object_new_object();
 308         json_object_object_add(json_tmp, "name", json_object_new_string(as.name.c_str()));
 309         json_object_object_add(json_tmp, "role", json_object_new_string(as.role.c_str()));
 310         json_object_array_add(json_areas, json_tmp);
 311     }
 312
 313     json_object_object_add(*json_out, "name", json_object_new_string(layer_name));
 314     json_object_object_add(*json_out, "changed", json_object_new_boolean(changed));
 315     json_object_object_add(*json_out, "areas", json_areas);
 316 }
 317
 318 void PolicyManager::updateState(int event_id, StmState crr_state)
 319 {
 320     this->updateLayerState(event_id, crr_state);
 321 }
 322
 323 void PolicyManager::updateLayerState(int event_id, StmState crr_state)
 324 {
 325     int event_no, category_no, area_no;
 326
 327     for (int layer_no = StmLayerNoMin;
 328          layer_no <= StmLayerNoMax; layer_no++)
 329     {
 330         HMI_DEBUG("wm:pm", ">>> LAYER:%s CHANGED:%d LAYOUT:%s",
 331                   kStmLayerName[layer_no], crr_state.layer[layer_no].changed,
 332                   kStmLayoutName[crr_state.layer[layer_no].state]);
 333     }
 334
 335     event_no = STM_GET_EVENT_FROM_ID(event_id);
 336     category_no = STM_GET_CATEGORY_FROM_ID(event_id);
 337     area_no = STM_GET_AREA_FROM_ID(event_id);
 338
 339     std::string req_evt = kStmEventName[event_no];
 340     std::string req_ctg = kStmCategoryName[category_no];
 341     std::string req_area = kStmAreaName[area_no];
 342     std::string req_role = this->req_role_list[event_id];
 343
 344     // Store previous layers
 345     this->prv_layers = this->crr_layers;
 346
 347     // Update layers
 348     for (int layer_no = StmLayerNoMin;
 349          layer_no <= StmLayerNoMax; layer_no++)
 350     {
 351         const char *layer_name = kStmLayerName[layer_no];
 352
 353         // This layer is changed?
 354         int changed = crr_state.layer[layer_no].changed;
 355         if (changed)
 356         {
 357             HMI_DEBUG("wm:pm", ">>>>>>>>>> Update layer:%s", layer_name);
 358
 359            // Get previous layout name of this layer
 360             LayoutState prv_layout_state = this->prv_layers[layer_name].layout_state;
 361             std::string prv_layout_name = prv_layout_state.name;
 362
 363             // Get current layout name of this layer
 364             int crr_layout_state_no = crr_state.layer[layer_no].state;
 365             std::string crr_layout_name = std::string(kStmLayoutName[crr_layout_state_no]);
 366
 367             LayoutState crr_layout_state;
 368             if ((prv_layout_name == crr_layout_name) &&
 369                 (kStmAreaName[StmAreaNoNone] == crr_layout_name))
 370             {
 371                 // Copy previous layout state for current
 372                 crr_layout_state = prv_layout_state;
 373                 changed = 0;
 374             }
 375             else
 376             {
 377                 // Copy previous layout state for current
 378                 crr_layout_state = prv_layout_state;
 379
 380                 HMI_DEBUG("wm:pm", "-- layout name previous:%s current:%s",
 381                           prv_layout_name.c_str(), crr_layout_name.c_str());
 382                 if (prv_layout_name == crr_layout_name)
 383                 {
 384                     HMI_DEBUG("wm:pm", "---- Previous layout is same with current");
 385                 }
 386                 else
 387                 {
 388                     // If previous layout is NOT same with current,
 389                     // current areas is set with default value
 390                     HMI_DEBUG("wm:pm", "---- Previous layout is NOT same with current");
 391                     crr_layout_state.name = this->default_layouts[crr_layout_name].name;
 392                     crr_layout_state.category_num = this->default_layouts[crr_layout_name].category_num;
 393                     crr_layout_state.area_list = this->default_layouts[crr_layout_name].area_list;
 394                 }
 395
 396                 // Create candidate list
 397                 std::map<std::string, AreaList> cand_list;
 398                 for (int ctg_no = StmCtgNoMin;
 399                      ctg_no <= StmCtgNoMax; ctg_no++)
 400                 {
 401                     if (ctg_no == StmCtgNoNone)
 402                     {
 403                         continue;
 404                     }
 405
 406                     const char *ctg = kStmCategoryName[ctg_no];
 407                     HMI_DEBUG("wm:pm", "-- Create candidate list for ctg:%s", ctg);
 408
 409                     AreaList tmp_cand_list;
 410                     int candidate_num = 0;
 411                     int blank_num = crr_layout_state.category_num[ctg];
 412
 413                     // If requested event is "activate"
 414                     // and there are requested category and area,
 415                     // update area with requested role in current layout.
 416                     bool request_for_this_layer = false;
 417                     std::string used_role = "";
 418                     if ((ctg == req_ctg) && ("activate" == req_evt))
 419                     {
 420                         HMI_DEBUG("wm:pm", "---- Requested event is activate");
 421                         for (AreaState &as : crr_layout_state.area_list)
 422                         {
 423                             if (as.category == req_ctg)
 424                             {
 425                                 request_for_this_layer = true;
 426
 427                                 if (as.name == req_area)
 428                                 {
 429                                     as.role = req_role;
 430                                     used_role = req_role;
 431                                     blank_num--;
 432                                     HMI_DEBUG("wm:pm", "------ Update current layout: area:%s category:%s role:%s",
 433                                               as.name.c_str(), as.category.c_str(), as.role.c_str());
 434                                     break;
 435                                 }
 436                             }
 437                         }
 438                     }
 439
 440                     // Create candidate list for category from the previous displayed categories
 441                     for (AreaState area_state : prv_layout_state.area_list)
 442                     {
 443                         if ((std::string(ctg) == area_state.category) &&
 444                             (used_role != area_state.role))
 445                         {
 446                             // If there is the category
 447                             // which is same with new category and not used for updating yet,
 448                             // push it to list
 449                             HMI_DEBUG("wm:pm", "---- Push previous(category:%s role:%s) to candidate list",
 450                                       area_state.category.c_str(), area_state.role.c_str());
 451                             tmp_cand_list.push_back(area_state);
 452                             candidate_num++;
 453                         }
 454                     }
 455
 456                     // If NOT updated by requested area:
 457                     // there is not requested area in new layout,
 458                     // so push requested role to candidate list
 459                     if (request_for_this_layer && ("" == used_role))
 460                     {
 461                         HMI_DEBUG("wm:pm", "---- Push request(area:%s category:%s role:%s) to candidate list",
 462                                   req_area.c_str(), req_ctg.c_str(), req_role.c_str());
 463                         AreaState area_state;
 464                         area_state.name = req_area;
 465                         area_state.category = req_ctg;
 466                         area_state.role = req_role;
 467                         tmp_cand_list.push_back(area_state);
 468                         candidate_num++;
 469                     }
 470
 471                     HMI_DEBUG("wm:pm", "---- blank_num:%d candidate_num:%d", blank_num, candidate_num);
 472
 473                     // Compare number of candidate/blank,
 474                     // And remove role in order of the oldest as necessary
 475                     if (candidate_num < blank_num)
 476                     {
 477                         // Refer history stack
 478                         // and add to the top of tmp_cand_list in order to the newest
 479                         while (candidate_num != blank_num)
 480                         {
 481                             AreaState area_state;
 482                             area_state.name = kStmAreaName[StmAreaNoNone];
 483                             area_state.category = ctg;
 484                             area_state.role = this->popRoleHistory(ctg);
 485                             if ("" == area_state.role)
 486                             {
 487                                 HMI_ERROR("wm:pm", "There is no role in history stack!!");
 488                             }
 489                             tmp_cand_list.push_back(area_state);
 490                             HMI_DEBUG("wm:pm", "------ Add role:%s to candidate list",
 491                                       area_state.role.c_str());
 492                             candidate_num++;
 493                         }
 494                     }
 495                     else if (candidate_num > blank_num)
 496                     {
 497                         // Remove the oldest role from candidate list
 498                         while (candidate_num != blank_num)
 499                         {
 500                             std::string removed_role = tmp_cand_list.begin()->role;
 501                             HMI_DEBUG("wm:pm", "------ Remove the oldest role:%s from candidate list",
 502                                       removed_role.c_str());
 503                             tmp_cand_list.erase(tmp_cand_list.begin());
 504                             candidate_num--;
 505
 506                             // Push removed data to history stack
 507                             this->pushRoleHistory(ctg, removed_role);
 508
 509                             // Remove from current layout
 510                             for (AreaState &as : crr_layout_state.area_list)
 511                             {
 512                                 if (as.role == removed_role)
 513                                 {
 514                                     as.role = "";
 515                                 }
 516                             }
 517                         }
 518                     }
 519                     else
 520                     { // (candidate_num == blank_num)
 521                         // nop
 522                     }
 523
 524                     cand_list[ctg] = tmp_cand_list;
 525                 }
 526
 527                 // Update areas
 528                 HMI_DEBUG("wm:pm", "-- Update areas by using candidate list");
 529                 for (AreaState &as : crr_layout_state.area_list)
 530                 {
 531                     HMI_DEBUG("wm:pm", "---- Check area:%s category:%s role:%s",
 532                               as.name.c_str(), as.category.c_str(), as.role.c_str());
 533                     if ("" == as.role)
 534                     {
 535                         HMI_DEBUG("wm:pm", "------ Update this area with role:%s",
 536                                   cand_list[as.category].begin()->role.c_str());
 537                         as.role = cand_list[as.category].begin()->role;
 538                         cand_list[as.category].erase(cand_list[as.category].begin());
 539                     }
 540                 }
 541             }
 542             // Update current layout of this layer
 543             this->crr_layers[layer_name].layout_state = crr_layout_state;
 544         }
 545         // Update changed flag
 546         this->crr_layers[layer_name].changed = (changed) ? true : false;
 547     }
 548
 549     // Erase role for the event_id from list
 550     this->req_role_list.erase(event_id);
 551
 552     HMI_DEBUG("wm:pm", ">>>>>>>>>> DUMP LAYERS (BEFORE)");
 553     this->dumpLayerState(this->prv_layers);
 554
 555     HMI_DEBUG("wm:pm", ">>>>>>>>>> DUMP LAYERS (AFTER)");
 556     this->dumpLayerState(this->crr_layers);
 557
 558     this->dumpRoleHistory();
 559 }
 560
 561 void PolicyManager::createOutputInformation(StmState crr_state, json_object **json_out)
 562 {
 563     json_object *json_tmp;
 564
 565     // Create layout information
 566     //
 567     //     "layers": [
 568     //     {
 569     //         "homescreen": {
 570     //             "changed": <bool>,
 571     //             "areas": [
 572     //             {
 573     //                 "name":<const char*>,
 574     //                 "role":<const char*>
 575     //             }.
 576     //             ...
 577     //             ]
 578     //         }
 579     //     },
 580     //     ...
 581     json_object *json_layer = json_object_new_array();
 582     const char *layer_name;
 583     for (int layer_no = StmLayerNoMin;
 584          layer_no <= StmLayerNoMax; layer_no++)
 585     {
 586         layer_name = kStmLayerName[layer_no];
 587         json_tmp = json_object_new_object();
 588         this->addStateToJson(layer_name,
 589                              this->crr_layers[layer_name].changed,
 590                              this->crr_layers[layer_name].layout_state.area_list,
 591                              &json_tmp);
 592         json_object_array_add(json_layer, json_tmp);
 593     }
 594     json_object_object_add(*json_out, "layers", json_layer);
 595 }
 596
 597 int PolicyManager::transitionState(sd_event_source *source, void *data)
 598 {
 599     HMI_DEBUG("wm:pm", ">>>>>>>>>> START STATE TRANSITION");
 600
 601     int event_id = *((int *)data);
 602
 603     int event_no, category_no, area_no;
 604     event_no = STM_GET_EVENT_FROM_ID(event_id);
 605     category_no = STM_GET_CATEGORY_FROM_ID(event_id);
 606     area_no = STM_GET_AREA_FROM_ID(event_id);
 607     HMI_DEBUG("wm:pm", ">>>>>>>>>> EVENT:%s CATEGORY:%s AREA:%s",
 608               kStmEventName[event_no],
 609               kStmCategoryName[category_no],
 610               kStmAreaName[area_no]);
 611
 612     // Transition state
 613     StmState crr_state;
 614     int ret = stmTransitionState(event_id, &crr_state);
 615     if (0 > ret)
 616     {
 617         HMI_ERROR("wm:pm", "Failed transition state");
 618         if (nullptr != this->callback.onError)
 619         {
 620             json_object *json_out = json_object_new_object();
 621             json_object_object_add(json_out, "message",
 622                                    json_object_new_string("Failed to transition state"));
 623             json_object_object_add(json_out, "event",
 624                                    json_object_new_string(kStmEventName[event_no]));
 625             json_object_object_add(json_out, "role",
 626                                    json_object_new_string(this->req_role_list[event_id].c_str()));
 627             json_object_object_add(json_out, "area",
 628                                    json_object_new_string(kStmAreaName[area_no]));
 629             this->callback.onError(json_out);
 630             json_object_put(json_out);
 631         }
 632         return -1;
 633     }
 634
 635     // Update state which is managed by PolicyManager
 636     this->updateState(event_id, crr_state);
 637
 638     // Create output information for ResourceManager
 639     json_object *json_out = json_object_new_object();
 640     this->createOutputInformation(crr_state, &json_out);
 641
 642     // Notify changed state
 643     if (nullptr != this->callback.onStateTransitioned)
 644     {
 645         this->callback.onStateTransitioned(json_out);
 646     }
 647
 648     // Release json_object
 649     json_object_put(json_out);
 650
 651     // Release data
 652     delete (int *)data;
 653
 654     // Destroy sd_event_source object
 655     sd_event_source_unref(source);
 656
 657     // Remove event source from list
 658     if (this->event_source_list.find(event_id) != this->event_source_list.end())
 659     {
 660         this->event_source_list.erase(event_id);
 661     }
 662
 663     HMI_DEBUG("wm:pm", ">>>>>>>>>> FINISH STATE TRANSITION");
 664     return 0;
 665 }
 666
 667 int PolicyManager::timerEvent(sd_event_source *source, uint64_t usec, void *data)
 668 {
 669     HMI_DEBUG("wm:pm", "Call");
 670
 671     int ret = this->transitionState(source, data);
 672     return ret;
 673 }
 674
 675 int PolicyManager::setStateTransitionProcessToSystemd(int event_id, uint64_t delay_ms, std::string role)
 676 {
 677     HMI_DEBUG("wm:pm", "event_id:0x%x delay:%d role:%s", event_id, delay_ms, role.c_str());
 678
 679     // Store requested role
 680     this->req_role_list[event_id] = role;
 681
 682     if (0 == delay_ms)
 683     {
 684         int ret = sd_event_add_defer(afb_daemon_get_event_loop(), NULL,
 685                                      &pm::transitionStateWrapper, new int(event_id));
 686         if (0 > ret)
 687         {
 688             HMI_ERROR("wm:pm", "Faild to sd_event_add_defer: errno:%d", ret);
 689             this->req_role_list.erase(event_id);
 690             return -1;
 691         }
 692     }
 693     else
 694     {
 695         // Get current time
 696         struct timespec time_spec;
 697         clock_gettime(CLOCK_MONOTONIC, &time_spec);
 698
 699         // Calculate timer fired time
 700         uint64_t usec = (time_spec.tv_sec * 1000000) + (time_spec.tv_nsec / 1000) + (delay_ms * 1000);
 701
 702         // Set timer
 703         struct sd_event_source *event_source;
 704         int ret = sd_event_add_time(afb_daemon_get_event_loop(), &event_source,
 705                                     CLOCK_MONOTONIC, usec, 1,
 706                                     &pm::timerEventWrapper, new int(event_id));
 707         if (0 > ret)
 708         {
 709             HMI_ERROR("wm:pm", "Faild to sd_event_add_time: errno:%d", ret);
 710             this->req_role_list.erase(event_id);
 711             return -1;
 712         }
 713
 714         // Store event source
 715         this->event_source_list[event_id] = event_source;
 716     }
 717
 718     return 0;
 719 }
 720
 721 int PolicyManager::loadRoleDb()
 722 {
 723     std::string file_name;
 724
 725     // Get afm application installed dir
 726     char const *afm_app_install_dir = getenv("AFM_APP_INSTALL_DIR");
 727     HMI_DEBUG("wm:pm", "afm_app_install_dir:%s", afm_app_install_dir);
 728
 729     if (!afm_app_install_dir)
 730     {
 731         HMI_ERROR("wm:pm", "AFM_APP_INSTALL_DIR is not defined");
 732     }
 733     else
 734     {
 735         file_name = std::string(afm_app_install_dir) + std::string("/etc/roles.db");
 736     }
 737
 738     // Load roles.db
 739     json_object *json_obj;
 740     int ret = this->inputJsonFilie(file_name.c_str(), &json_obj);
 741     if (0 > ret)
 742     {
 743         HMI_ERROR("wm:pm", "Could not open roles.db, so use default role information");
 744         json_obj = json_tokener_parse(kDefaultRoleDb);
 745     }
 746     HMI_DEBUG("wm:pm", "json_obj dump:%s", json_object_get_string(json_obj));
 747
 748     json_object *json_roles;
 749     if (!json_object_object_get_ex(json_obj, "roles", &json_roles))
 750     {
 751         HMI_ERROR("wm:pm", "Parse Error!!");
 752         return -1;
 753     }
 754
 755     int len = json_object_array_length(json_roles);
 756     HMI_DEBUG("wm:pm", "json_cfg len:%d", len);
 757     HMI_DEBUG("wm:pm", "json_cfg dump:%s", json_object_get_string(json_roles));
 758
 759     json_object *json_tmp;
 760     const char *category;
 761     const char *roles;
 762     const char *areas;
 763     for (int i = 0; i < len; i++)
 764     {
 765         json_tmp = json_object_array_get_idx(json_roles, i);
 766
 767         category = this->getStringFromJson(json_tmp, "category");
 768         roles = this->getStringFromJson(json_tmp, "role");
 769         areas = this->getStringFromJson(json_tmp, "area");
 770
 771         if ((nullptr == category) || (nullptr == roles) || (nullptr == areas))
 772         {
 773             HMI_ERROR("wm:pm", "Parse Error!!");
 774             return -1;
 775         }
 776
 777         // Parse roles by '|'
 778         std::vector<std::string> vct_roles;
 779         vct_roles = this->parseString(std::string(roles), '|');
 780
 781         // Parse areas by '|'
 782         std::vector<std::string> vct_areas;
 783         vct_areas = this->parseString(std::string(areas), '|');
 784
 785         // Set role, category, default area
 786         for (auto itr = vct_roles.begin(); itr != vct_roles.end(); ++itr)
 787         {
 788             // Delete space from role and area name
 789             std::string role = this->deleteSpace(*itr);
 790             std::string area = this->deleteSpace(vct_areas[0]);
 791
 792             this->role2category[role] = std::string(category);
 793             this->role2defaultarea[role] = area;
 794         }
 795
 796         this->category2role[std::string(category)] = std::string(roles);
 797     }
 798
 799     // Check
 800     HMI_DEBUG("wm:pm", "Check role2category");
 801     for (const auto &x : this->role2category)
 802     {
 803         HMI_DEBUG("wm:pm", "key:%s, val:%s", x.first.c_str(), x.second.c_str());
 804     }
 805
 806     HMI_DEBUG("wm:pm", "Check role2defaultarea");
 807     for (const auto &x : this->role2defaultarea)
 808     {
 809         HMI_DEBUG("wm:pm", "key:%s, val:%s", x.first.c_str(), x.second.c_str());
 810     }
 811
 812     HMI_DEBUG("wm:pm", "Check category2role");
 813     for (const auto &x : this->category2role)
 814     {
 815         HMI_DEBUG("wm:pm", "key:%s, val:%s", x.first.c_str(), x.second.c_str());
 816     }
 817
 818     return 0;
 819 }
 820
 821 int PolicyManager::loadLayoutDb()
 822 {
 823     HMI_DEBUG("wm:pm", "Call");
 824
 825     // Get afm application installed dir
 826     char const *afm_app_install_dir = getenv("AFM_APP_INSTALL_DIR");
 827     HMI_DEBUG("wm:pm", "afm_app_install_dir:%s", afm_app_install_dir);
 828
 829     std::string file_name;
 830     if (!afm_app_install_dir)
 831     {
 832         HMI_ERROR("wm:pm", "AFM_APP_INSTALL_DIR is not defined");
 833     }
 834     else
 835     {
 836         file_name = std::string(afm_app_install_dir) + std::string("/etc/layouts.db");
 837     }
 838
 839     // Load layouts.db
 840     json_object *json_obj;
 841     int ret = this->inputJsonFilie(file_name.c_str(), &json_obj);
 842     if (0 > ret)
 843     {
 844         HMI_DEBUG("wm:pm", "Could not open layouts.db, so use default layout information");
 845         json_obj = json_tokener_parse(kDefaultLayoutDb);
 846     }
 847     HMI_DEBUG("wm:pm", "json_obj dump:%s", json_object_get_string(json_obj));
 848
 849     // Perse layouts
 850     HMI_DEBUG("wm:pm", "Perse layouts");
 851     json_object *json_cfg;
 852     if (!json_object_object_get_ex(json_obj, "layouts", &json_cfg))
 853     {
 854         HMI_ERROR("wm:pm", "Parse Error!!");
 855         return -1;
 856     }
 857
 858     int len = json_object_array_length(json_cfg);
 859     HMI_DEBUG("wm:pm", "json_cfg len:%d", len);
 860     HMI_DEBUG("wm:pm", "json_cfg dump:%s", json_object_get_string(json_cfg));
 861
 862     const char *layout;
 863     const char *role;
 864     const char *category;
 865     for (int i = 0; i < len; i++)
 866     {
 867         json_object *json_tmp = json_object_array_get_idx(json_cfg, i);
 868
 869         layout = this->getStringFromJson(json_tmp, "name");
 870         if (nullptr == layout)
 871         {
 872             HMI_ERROR("wm:pm", "Parse Error!!");
 873             return -1;
 874         }
 875         HMI_DEBUG("wm:pm", "> layout:%s", layout);
 876
 877         json_object *json_area_array;
 878         if (!json_object_object_get_ex(json_tmp, "areas", &json_area_array))
 879         {
 880             HMI_ERROR("wm:pm", "Parse Error!!");
 881             return -1;
 882         }
 883
 884         int len_area = json_object_array_length(json_area_array);
 885         HMI_DEBUG("wm:pm", "json_area_array len:%d", len_area);
 886         HMI_DEBUG("wm:pm", "json_area_array dump:%s", json_object_get_string(json_area_array));
 887
 888         LayoutState layout_state;
 889         AreaState area_state;
 890         std::map<std::string, int> category_num;
 891         for (int ctg_no = StmCtgNoMin;
 892              ctg_no <= StmCtgNoMax; ctg_no++)
 893         {
 894             const char *ctg_name = kStmCategoryName[ctg_no];
 895             category_num[ctg_name] = 0;
 896         }
 897
 898         for (int j = 0; j < len_area; j++)
 899         {
 900             json_object *json_area = json_object_array_get_idx(json_area_array, j);
 901
 902             // Get area name
 903             const char *area = this->getStringFromJson(json_area, "name");
 904             if (nullptr == area)
 905             {
 906                 HMI_ERROR("wm:pm", "Parse Error!!");
 907                 return -1;
 908             }
 909             area_state.name = std::string(area);
 910             HMI_DEBUG("wm:pm", ">> area:%s", area);
 911
 912             // Get app attribute of the area
 913             category = this->getStringFromJson(json_area, "category");
 914             if (nullptr == category)
 915             {
 916                 HMI_ERROR("wm:pm", "Parse Error!!");
 917                 return -1;
 918             }
 919             area_state.category = std::string(category);
 920             category_num[category]++;
 921             HMI_DEBUG("wm:pm", ">>> category:%s", category);
 922
 923             role = this->getStringFromJson(json_area, "role");
 924             if (nullptr != role)
 925             {
 926                 // Role is NOT essential here
 927                 area_state.role = std::string(role);
 928             }
 929             else
 930             {
 931                 area_state.role = std::string("");
 932             }
 933             HMI_DEBUG("wm:pm", ">>> role:%s", role);
 934
 935             layout_state.area_list.push_back(area_state);
 936         }
 937
 938         layout_state.name = layout;
 939         layout_state.category_num = category_num;
 940         this->default_layouts[layout] = layout_state;
 941     }
 942
 943     // initialize for none layout
 944     LayoutState none_layout_state;
 945     memset(&none_layout_state, 0, sizeof(none_layout_state));
 946     none_layout_state.name = "none";
 947     this->default_layouts["none"] = none_layout_state;
 948
 949     // Check
 950     for (auto itr_layout = this->default_layouts.begin();
 951          itr_layout != this->default_layouts.end(); ++itr_layout)
 952     {
 953         HMI_DEBUG("wm:pm", ">>> layout:%s", itr_layout->first.c_str());
 954
 955         for (auto itr_area = itr_layout->second.area_list.begin();
 956              itr_area != itr_layout->second.area_list.end(); ++itr_area)
 957         {
 958             HMI_DEBUG("wm:pm", ">>> >>> area    :%s", itr_area->name.c_str());
 959             HMI_DEBUG("wm:pm", ">>> >>> category:%s", itr_area->category.c_str());
 960             HMI_DEBUG("wm:pm", ">>> >>> role    :%s", itr_area->role.c_str());
 961         }
 962     }
 963
 964     // Release json_object
 965     json_object_put(json_obj);
 966
 967     return 0;
 968 }
 969
 970 static const int kHistoryNum = 5;
 971 void PolicyManager::pushRoleHistory(std::string category, std::string role)
 972 {
 973     auto i = std::remove_if(this->role_history[category].begin(),
 974                             this->role_history[category].end(),
 975                             [role](std::string x) { return (role == x); });
 976
 977     if (this->role_history[category].end() != i)
 978     {
 979         this->role_history[category].erase(i);
 980     }
 981
 982     this->role_history[category].push_back(role);
 983
 984     if (kHistoryNum < role_history[category].size())
 985     {
 986         this->role_history[category].erase(
 987             this->role_history[category].begin());
 988     }
 989 }
 990
 991 std::string PolicyManager::popRoleHistory(std::string category)
 992 {
 993     std::string role;
 994     if (role_history[category].empty())
 995     {
 996         role = "";
 997     }
 998     else
 999     {
1000         role = this->role_history[category].back();
1001         this->role_history[category].pop_back();
1002     }
1003     return role;
1004 }
1005
1006 const char *PolicyManager::getStringFromJson(json_object *obj, const char *key)
1007 {
1008     json_object *tmp;
1009     if (!json_object_object_get_ex(obj, key, &tmp))
1010     {
1011         HMI_DEBUG("wm:pm", "Not found key \"%s\"", key);
1012         return nullptr;
1013     }
1014
1015     return json_object_get_string(tmp);
1016 }
1017
1018 int PolicyManager::inputJsonFilie(const char *file, json_object **obj)
1019 {
1020     const int input_size = 128;
1021     int ret = -1;
1022
1023     HMI_DEBUG("wm:pm", "Input file: %s", file);
1024
1025     // Open json file
1026     FILE *fp = fopen(file, "rb");
1027     if (nullptr == fp)
1028     {
1029         HMI_ERROR("wm:pm", "Could not open file");
1030         return ret;
1031     }
1032
1033     // Parse file data
1034     struct json_tokener *tokener = json_tokener_new();
1035     enum json_tokener_error json_error;
1036     char buffer[input_size];
1037     int block_cnt = 1;
1038     while (1)
1039     {
1040         size_t len = fread(buffer, sizeof(char), input_size, fp);
1041         *obj = json_tokener_parse_ex(tokener, buffer, len);
1042         if (nullptr != *obj)
1043         {
1044             HMI_DEBUG("wm:pm", "File input is success");
1045             ret = 0;
1046             break;
1047         }
1048
1049         json_error = json_tokener_get_error(tokener);
1050         if ((json_tokener_continue != json_error) || (input_size > len))
1051         {
1052             HMI_ERROR("wm:pm", "Failed to parse file (byte:%d err:%s)",
1053                       (input_size * block_cnt), json_tokener_error_desc(json_error));
1054             HMI_ERROR("wm:pm", "\n%s", buffer);
1055             *obj = nullptr;
1056             break;
1057         }
1058         block_cnt++;
1059     }
1060
1061     // Close json file
1062     fclose(fp);
1063
1064     // Free json_tokener
1065     json_tokener_free(tokener);
1066
1067     return ret;
1068 }
1069
1070 void PolicyManager::dumpLayerState(std::unordered_map<std::string, LayerState> &layers)
1071 {
1072     HMI_DEBUG("wm:pm", "-------------------------------------------------------------------------------------------------------");
1073     HMI_DEBUG("wm:pm", "|%-15s|%s|%-20s|%-20s|%-20s|%-20s|",
1074               "LAYER", "C", "LAYOUT", "AREA", "CATEGORY", "ROLE");
1075     for (const auto &itr : layers)
1076     {
1077         LayerState ls = itr.second;
1078         const char* layer   = ls.name.c_str();
1079         const char* changed = (ls.changed) ? "T" : "f";
1080         const char* layout  = ls.layout_state.name.c_str();
1081         bool first = true;
1082         for (const auto &as : ls.layout_state.area_list)
1083         {
1084             if (first)
1085             {
1086                 first = false;
1087                 HMI_DEBUG("wm:pm", "|%-15s|%1s|%-20s|%-20s|%-20s|%-20s|",
1088                           layer, changed, layout,
1089                           as.name.c_str(), as.category.c_str(), as.role.c_str());
1090             }
1091             else
1092                 HMI_DEBUG("wm:pm", "|%-15s|%1s|%-20s|%-20s|%-20s|%-20s|",
1093                           "", "", "", as.name.c_str(), as.category.c_str(), as.role.c_str());
1094         }
1095     }
1096     HMI_DEBUG("wm:pm", "-------------------------------------------------------------------------------------------------------");
1097 }
1098
1099 void PolicyManager::dumpRoleHistory()
1100 {
1101     HMI_DEBUG("wm:pm", ">>>>>>>>>> DUMP ROLE HISTORY ( category [older > newer] )");
1102     for (int ctg_no = StmCtgNoMin; ctg_no <= StmCtgNoMax; ctg_no++)
1103     {
1104         if (ctg_no == StmCtgNoNone)
1105             continue;
1106
1107         std::string category = std::string(kStmCategoryName[ctg_no]);
1108
1109         std::string str = category + " [ ";
1110         for (const auto &i : this->role_history[category])
1111             str += (i + " > ");
1112
1113         str += "]";
1114         HMI_DEBUG("wm:pm", "%s", str.c_str());
1115     }
1116 }
1117
1118 std::vector<std::string> PolicyManager::parseString(std::string str, char delimiter)
1119 {
1120     // Parse string by delimiter
1121     std::vector<std::string> vct;
1122     std::stringstream ss{str};
1123     std::string buf;
1124     while (std::getline(ss, buf, delimiter))
1125     {
1126         if (!buf.empty())
1127         {
1128             vct.push_back(buf);
1129         }
1130     }
1131     return vct;
1132 }
1133
1134 std::string PolicyManager::deleteSpace(std::string str)
1135 {
1136     std::string ret = str;
1137     size_t pos;
1138     while ((pos = ret.find_first_of(" ")) != std::string::npos)
1139     {
1140         ret.erase(pos, 1);
1141     }
1142     return ret;
1143 }
1144
1145 const char *PolicyManager::kDefaultRoleDb = "{ \
1146     \"roles\":[ \
1147     { \
1148         \"category\": \"homescreen\", \
1149         \"role\": \"homescreen\", \
1150         \"area\": \"fullscreen\", \
1151     }, \
1152     { \
1153         \"category\": \"map\", \
1154         \"role\": \"map\", \
1155         \"area\": \"normal.full | split.main\", \
1156     }, \
1157     { \
1158         \"category\": \"general\", \
1159         \"role\": \"launcher | poi | browser | sdl | mixer | radio | hvac | debug | phone | video | music\", \
1160         \"area\": \"normal.full\", \
1161     }, \
1162     { \
1163         \"category\": \"system\", \
1164         \"role\": \"settings | dashboard\", \
1165         \"area\": \"normal.full\", \
1166     }, \
1167     { \
1168         \"category\": \"software_keyboard\", \
1169         \"role\": \"software_keyboard\", \
1170         \"area\": \"software_keyboard\", \
1171     }, \
1172     { \
1173         \"category\": \"restriction\", \
1174         \"role\": \"restriction\", \
1175         \"area\": \"restriction.normal | restriction.split.main | restriction.split.sub\", \
1176     }, \
1177     { \
1178         \"category\": \"pop_up\", \
1179         \"role\": \"pop_up\", \
1180         \"area\": \"on_screen\", \
1181     }, \
1182     { \
1183         \"category\": \"system_alert\", \
1184         \"role\": \"system_alert\", \
1185         \"area\": \"on_screen\", \
1186     } \
1187     ] \
1188 }";
1189
1190 const char *PolicyManager::kDefaultLayoutDb = "{ \
1191     \"layouts\": [ \
1192         { \
1193             \"name\": \"homescreen\", \
1194             \"layer\": \"far_homescreen\", \
1195             \"areas\": [ \
1196                 { \
1197                     \"name\": \"fullscreen\", \
1198                     \"category\": \"homescreen\" \
1199                 } \
1200             ] \
1201         }, \
1202         { \
1203             \"name\": \"map.normal\", \
1204             \"layer\": \"apps\", \
1205             \"areas\": [ \
1206                 { \
1207                     \"name\": \"normal.full\", \
1208                     \"category\": \"map\" \
1209                 } \
1210             ] \
1211         }, \
1212         { \
1213             \"name\": \"map.split\", \
1214             \"layer\": \"apps\", \
1215             \"areas\": [ \
1216                 { \
1217                     \"name\": \"split.main\", \
1218                     \"category\": \"map\" \
1219                 }, \
1220                 { \
1221                     \"name\": \"split.sub\", \
1222                     \"category\": \"splitable\" \
1223                 } \
1224             ] \
1225         }, \
1226         { \
1227             \"name\": \"map.fullscreen\", \
1228             \"layer\": \"apps\", \
1229             \"areas\": [ \
1230                 { \
1231                     \"name\": \"fullscreen\", \
1232                     \"category\": \"map\" \
1233                 } \
1234             ] \
1235         }, \
1236         { \
1237             \"name\": \"splitable.normal\", \
1238             \"layer\": \"apps\", \
1239             \"areas\": [ \
1240                 { \
1241                     \"name\": \"normal.full\", \
1242                     \"category\": \"splitable\" \
1243                 } \
1244             ] \
1245         }, \
1246         { \
1247             \"name\": \"splitable.split\", \
1248             \"layer\": \"apps\", \
1249             \"areas\": [ \
1250                 { \
1251                     \"name\": \"split.main\", \
1252                     \"category\": \"splitable\" \
1253                 }, \
1254                 { \
1255                     \"name\": \"split.sub\", \
1256                     \"category\": \"splitable\" \
1257                 } \
1258             ] \
1259         }, \
1260         { \
1261             \"name\": \"general.normal\", \
1262             \"layer\": \"apps\", \
1263             \"areas\": [ \
1264                 { \
1265                     \"name\": \"normal.full\", \
1266                     \"category\": \"general\" \
1267                 } \
1268             ] \
1269         }, \
1270         { \
1271             \"name\": \"system.normal\", \
1272             \"layer\": \"apps\", \
1273             \"areas\": [ \
1274                 { \
1275                     \"name\": \"normal.full\", \
1276                     \"category\": \"system\" \
1277                 } \
1278             ] \
1279         }, \
1280         { \
1281             \"name\": \"software_keyboard\", \
1282             \"layer\": \"near_homescreen\", \
1283             \"areas\": [ \
1284                 { \
1285                     \"name\": \"software_keyboard\", \
1286                     \"category\": \"software_keyboard\" \
1287                 } \
1288             ] \
1289         }, \
1290         { \
1291             \"name\": \"restriction.normal\", \
1292             \"layer\": \"restriction\", \
1293             \"areas\": [ \
1294                 { \
1295                     \"name\": \"restriction.normal\", \
1296                     \"category\": \"restriction\" \
1297                 } \
1298             ] \
1299         }, \
1300         { \
1301             \"name\": \"restriction.split.main\", \
1302             \"layer\": \"restriction\", \
1303             \"areas\": [ \
1304                 { \
1305                     \"name\": \"restriction.split.main\", \
1306                     \"category\": \"restriction\" \
1307                 } \
1308             ] \
1309         }, \
1310         { \
1311             \"name\": \"restriction.split.sub\", \
1312             \"layer\": \"restriction\", \
1313             \"areas\": [ \
1314                 { \
1315                     \"name\": \"restriction.split.sub\", \
1316                     \"category\": \"restriction\" \
1317                 } \
1318             ] \
1319         }, \
1320         { \
1321             \"name\": \"pop_up\", \
1322             \"layer\": \"on_screen\", \
1323             \"areas\": [ \
1324                 { \
1325                     \"name\": \"on_screen\", \
1326                     \"category\": \"pop_up\" \
1327                 } \
1328             ] \
1329         }, \
1330         { \
1331             \"name\": \"system_alert\", \
1332             \"layer\": \"on_screen\", \
1333             \"areas\": [ \
1334                 { \
1335                     \"name\": \"on_screen\", \
1336                     \"category\": \"system_alert\" \
1337                 } \
1338             ] \
1339         } \
1340     ] \
1341 }";