plugins/database/databasesink.cpp

   1 #include "databasesink.h"
   2 #include "abstractroutingengine.h"
   3 #include "listplusplus.h"
   4 #include "superptr.hpp"
   5 #include "uuidhelper.h"
   6 #include "ambplugin.h"
   7
   8 #include <thread>
   9
  10 int bufferLength = 100;
  11 int timeout=1000;
  12
  13 extern "C" AbstractSource * create(AbstractRoutingEngine* routingengine, map<string, string> config)
  14 {
  15         auto plugin = new AmbPlugin<DatabaseSink>(routingengine, config);
  16         plugin->init();
  17
  18         return plugin;
  19 }
  20
  21 static void * cbFunc(Shared* shared)
  22 {
  23         if(!shared)
  24         {
  25                 throw std::runtime_error("Could not cast shared object.");
  26         }
  27
  28         ///new tripID:
  29         shared->tripId = amb::createUuid();
  30
  31         vector<DictionaryList<string> > insertList;
  32
  33         while(1)
  34         {
  35                 usleep(timeout*1000);
  36
  37                 DBObject obj = shared->queue.pop();
  38
  39                 if( obj.quit )
  40                 {
  41                         break;
  42                 }
  43
  44                 DictionaryList<string> dict;
  45
  46                 NameValuePair<string> one("key", obj.key);
  47                 NameValuePair<string> two("value", obj.value);
  48                 NameValuePair<string> three("source", obj.source);
  49                 NameValuePair<string> zone("zone", boost::lexical_cast<string>(obj.zone));
  50                 NameValuePair<string> four("time", boost::lexical_cast<string>(obj.time));
  51                 NameValuePair<string> five("sequence", boost::lexical_cast<string>(obj.sequence));
  52                 NameValuePair<string> six("tripId", boost::lexical_cast<string>(shared->tripId));
  53
  54                 dict.push_back(one);
  55                 dict.push_back(two);
  56                 dict.push_back(three);
  57                 dict.push_back(zone);
  58                 dict.push_back(four);
  59                 dict.push_back(five);
  60                 dict.push_back(six);
  61
  62                 insertList.push_back(dict);
  63
  64                 if(insertList.size() > bufferLength)
  65                 {
  66                         shared->db->exec("BEGIN IMMEDIATE TRANSACTION");
  67                         for(int i=0; i< insertList.size(); i++)
  68                         {
  69                                 DictionaryList<string> d = insertList[i];
  70                                 shared->db->insert(d);
  71                         }
  72                         shared->db->exec("END TRANSACTION");
  73                         insertList.clear();
  74                 }
  75                 //delete obj;
  76         }
  77
  78         /// final flush of whatever is still in the queue:
  79
  80         shared->db->exec("BEGIN IMMEDIATE TRANSACTION");
  81         for(int i=0; i< insertList.size(); i++)
  82         {
  83                 DictionaryList<string> d = insertList[i];
  84                 shared->db->insert(d);
  85         }
  86         shared->db->exec("END TRANSACTION");
  87
  88         return NULL;
  89 }
  90
  91 int getNextEvent(gpointer data)
  92 {
  93         PlaybackShared* pbshared = static_cast<PlaybackShared*>(data);
  94
  95         if(!pbshared)
  96                 throw std::runtime_error("failed to cast PlaybackShared object");
  97
  98         if(pbshared->stop)
  99                 return 0;
 100
 101         auto itr = pbshared->playbackQueue.begin();
 102
 103         if(itr == pbshared->playbackQueue.end())
 104         {
 105                 return 0;
 106         }
 107
 108         DBObject obj = *itr;
 109
 110         auto value = amb::make_unique(VehicleProperty::getPropertyTypeForPropertyNameValue(obj.key, obj.value));
 111
 112         if(value)
 113         {
 114                 value->priority = AbstractPropertyType::Instant;
 115                 value->timestamp = obj.time;
 116                 value->sequence = obj.sequence;
 117                 value->sourceUuid = obj.source;
 118                 value->zone = obj.zone;
 119                 pbshared->routingEngine->updateProperty(value.get(), pbshared->uuid);
 120         }
 121
 122         if(++itr != pbshared->playbackQueue.end())
 123         {
 124                 DBObject o2 = *itr;
 125                 double t = o2.time - obj.time;
 126
 127                 if(t > 0)
 128                         g_timeout_add((t*1000) / pbshared->playBackMultiplier, getNextEvent, pbshared);
 129                 else
 130                         g_timeout_add(1, getNextEvent, pbshared);
 131         }
 132
 133         pbshared->playbackQueue.remove(obj);
 134         DebugOut()<<"playback Queue size: "<<pbshared->playbackQueue.size()<<endl;
 135
 136         return 0;
 137 }
 138
 139 DatabaseSink::DatabaseSink(AbstractRoutingEngine *engine, map<std::string, std::string> config, AbstractSource &parent)
 140         :AmbPluginImpl(engine, config, parent), shared(nullptr), playback(false), playbackShared(nullptr), playbackMultiplier(1)
 141 {
 142         tablename = "data";
 143         tablecreate = "CREATE TABLE IF NOT EXISTS data (key TEXT, value BLOB, source TEXT, zone INTEGER, time REAL, sequence REAL, tripId TEXT)";
 144
 145         if(config.find("bufferLength") != config.end())
 146         {
 147                 bufferLength = boost::lexical_cast<int>(config["bufferLength"]);
 148         }
 149
 150         if(config.find("frequency") != config.end())
 151         {
 152                 try
 153                 {
 154                         int t = boost::lexical_cast<int>(config["frequency"]);
 155                         timeout = 1000 / t;
 156                 }catch(...)
 157                 {
 158                         DebugOut(DebugOut::Error)<<"Failed to parse frequency: Invalid value "<<config["frequency"]<<endl;
 159                 }
 160         }
 161
 162         if(config.find("properties") != config.end())
 163         {
 164                 parseConfig();
 165         }
 166
 167         for(auto itr : propertiesToSubscribeTo)
 168         {
 169                 engine->subscribeToProperty(itr, &parent);
 170         }
 171
 172         databaseName = addPropertySupport(Zone::None, [](){ return new DatabaseFileType("storage"); });
 173         playback = addPropertySupport(Zone::None, [](){ return new DatabasePlaybackType(false); });
 174         databaseLogging = addPropertySupport(Zone::None, [](){ return new DatabaseLoggingType(false); });
 175
 176         if(config.find("startOnLoad")!= config.end())
 177         {
 178                 databaseLogging->setValue(config["startOnLoad"] == "true");
 179         }
 180
 181         if(config.find("playbackMultiplier")!= config.end())
 182         {
 183                 playbackMultiplier = boost::lexical_cast<uint>(config["playbackMultiplier"]);
 184         }
 185
 186         if(config.find("playbackOnLoad")!= config.end())
 187         {
 188                 playback->setValue(config["playbackOnLoad"] == "true");
 189         }
 190 }
 191
 192 DatabaseSink::~DatabaseSink()
 193 {
 194         if(shared)
 195         {
 196                 stopDb();
 197         }
 198
 199         if(playbackShared)
 200         {
 201                 delete playbackShared;
 202         }
 203 }
 204
 205
 206 void DatabaseSink::supportedChanged(const PropertyList &supportedProperties)
 207 {
 208
 209 }
 210
 211 void DatabaseSink::parseConfig()
 212 {
 213         json_object *rootobject;
 214         json_tokener *tokener = json_tokener_new();
 215         enum json_tokener_error err;
 216         do
 217         {
 218                 rootobject = json_tokener_parse_ex(tokener, configuration["properties"].c_str(),configuration["properties"].size());
 219         } while ((err = json_tokener_get_error(tokener)) == json_tokener_continue);
 220         if (err != json_tokener_success)
 221         {
 222                 fprintf(stderr, "Error: %s\n", json_tokener_error_desc(err));
 223         }
 224         if (tokener->char_offset < configuration["properties"].size()) // XXX shouldn't access internal fields
 225         {
 226                 //Should handle the extra data here sometime...
 227         }
 228
 229         json_object *propobject = json_object_object_get(rootobject,"properties");
 230
 231         g_assert(json_object_get_type(propobject) == json_type_array);
 232
 233         array_list *proplist = json_object_get_array(propobject);
 234
 235         for(int i=0; i < array_list_length(proplist); i++)
 236         {
 237                 json_object *idxobj = (json_object*)array_list_get_idx(proplist,i);
 238                 std::string prop = json_object_get_string(idxobj);
 239                 propertiesToSubscribeTo.push_back(prop);
 240
 241                 DebugOut()<<"DatabaseSink logging: "<<prop<<endl;
 242         }
 243
 244         //json_object_put(propobject);
 245         json_object_put(rootobject);
 246 }
 247
 248 void DatabaseSink::stopDb()
 249 {
 250         if(!shared)
 251                 return;
 252
 253         DBObject obj;
 254         obj.quit = true;
 255         shared->queue.append(obj);
 256
 257         if(thread && thread->joinable())
 258                 thread->join();
 259
 260         delete shared;
 261         shared = NULL;
 262 }
 263
 264 void DatabaseSink::startDb()
 265 {
 266         if(playback->value<bool>())
 267         {
 268                 DebugOut(0)<<"ERROR: tried to start logging during playback.  Only logging or playback can be used at one time"<<endl;
 269                 return;
 270         }
 271
 272         if(shared)
 273         {
 274                 DebugOut(0)<<"WARNING: logging already started.  doing nothing."<<endl;
 275                 return;
 276         }
 277
 278         initDb();
 279
 280         if(thread && thread->joinable())
 281                 thread->detach();
 282
 283         thread = amb::make_unique(new std::thread(cbFunc, shared));
 284 }
 285
 286 void DatabaseSink::startPlayback()
 287 {
 288         if(playback->value<bool>())
 289                 return;
 290
 291         playback->setValue(true);
 292
 293         initDb();
 294
 295         /// populate playback queue:
 296
 297         vector<vector<string> > results = shared->db->select("SELECT * FROM "+tablename);
 298
 299         /// we are done with shared.  clean up:
 300         delete shared;
 301         shared = NULL;
 302
 303         if(playbackShared)
 304         {
 305                 delete playbackShared;
 306         }
 307
 308         playbackShared = new PlaybackShared(routingEngine, uuid(), playbackMultiplier);
 309
 310         for(int i=0;i<results.size();i++)
 311         {
 312                 if(results[i].size() < 5)
 313                 {
 314                         throw std::runtime_error("column mismatch in query");
 315                 }
 316
 317                 DBObject obj;
 318
 319                 obj.key = results[i][0];
 320                 obj.value = results[i][1];
 321                 obj.source = results[i][2];
 322                 obj.zone = boost::lexical_cast<int>(results[i][3]);
 323                 obj.time = boost::lexical_cast<double>(results[i][4]);
 324                 obj.sequence = boost::lexical_cast<double>(results[i][5]);
 325
 326                 playbackShared->playbackQueue.push_back(obj);
 327         }
 328
 329         g_timeout_add(0, getNextEvent, playbackShared);
 330 }
 331
 332 void DatabaseSink::initDb()
 333 {
 334         if(shared) delete shared;
 335
 336         shared = new Shared;
 337         shared->db->init(databaseName->value<std::string>(), tablename, tablecreate);
 338 }
 339
 340 void DatabaseSink::setDatabaseFileName(string filename)
 341 {
 342         initDb();
 343
 344         vector<vector<string> > supportedStr = shared->db->select("SELECT DISTINCT key, zone FROM " + tablename);
 345
 346         for(int i=0; i < supportedStr.size(); i++)
 347         {
 348                 std::string name = supportedStr[i][0];
 349
 350                 if(!contains(supported(), name))
 351                 {
 352                         std::string zoneStr = supportedStr[i][1];
 353
 354                         DebugOut() << "adding property " << name << " in zone: " << zoneStr << endl;
 355
 356                         Zone::Type zone = boost::lexical_cast<Zone::Type>(zoneStr);
 357                         addPropertySupport(zone, [name]() { return VehicleProperty::getPropertyTypeForPropertyNameValue(name); });
 358                 }
 359         }
 360
 361         delete shared;
 362         shared = NULL;
 363
 364         routingEngine->updateSupported(supported(), PropertyList(), &source);
 365 }
 366
 367 void DatabaseSink::propertyChanged(AbstractPropertyType *value)
 368 {
 369         VehicleProperty::Property property = value->name;
 370
 371         if(!shared)
 372                 return;
 373
 374         if(!contains(supported(), property))
 375         {
 376                 addPropertySupport(value->zone, [property]() { return VehicleProperty::getPropertyTypeForPropertyNameValue(property);});
 377                 routingEngine->updateSupported(supported(), PropertyList(), &source);
 378         }
 379
 380         DBObject obj;
 381         obj.key = property;
 382         obj.value = value->toString();
 383         obj.source = value->sourceUuid;
 384         obj.time = value->timestamp;
 385         obj.sequence = value->sequence;
 386         obj.zone = value->zone;
 387
 388         shared->queue.append(obj);
 389 }
 390
 391
 392 const std::string DatabaseSink::uuid() const
 393 {
 394         return "9f88156e-cb92-4472-8775-9c08addf50d3";
 395 }
 396
 397 void DatabaseSink::init()
 398 {
 399         if(configuration.find("databaseFile") != configuration.end())
 400         {
 401                 databaseName->setValue(configuration["databaseFile"]);
 402                 setDatabaseFileName(configuration["databaseFile"]);
 403         }
 404
 405         routingEngine->updateSupported(supported(), PropertyList(), &source);
 406 }
 407
 408 void DatabaseSink::getRangePropertyAsync(AsyncRangePropertyReply *reply)
 409 {
 410         BaseDB * db = new BaseDB();
 411         db->init(databaseName->value<std::string>(), tablename, tablecreate);
 412
 413         ostringstream query;
 414         query.precision(15);
 415
 416         query<<"SELECT * from "<<tablename<<" WHERE (";
 417
 418         for(auto itr = reply->properties.begin(); itr != reply->properties.end(); itr++)
 419         {
 420                 if(itr != reply->properties.begin())
 421                         query<<" OR ";
 422
 423                 query<<"key='"<<(*itr)<<"'";
 424         }
 425
 426         query<<") AND";
 427
 428         if(reply->timeBegin && reply->timeEnd)
 429         {
 430                 query<<" time BETWEEN "<<reply->timeBegin<<" AND "<<reply->timeEnd;
 431         }
 432
 433         if(reply->sequenceBegin >= 0 && reply->sequenceEnd >=0)
 434         {
 435                 query<<" AND sequence BETWEEN "<<reply->sequenceBegin<<" AND "<<reply->sequenceEnd;
 436         }
 437
 438         if(reply->sourceUuid != "")
 439                 query<<" AND source='"<<reply->sourceUuid<<"'";
 440
 441         query<<" AND zone="<<reply->zone;
 442
 443         std::vector<std::vector<string>> data = db->select(query.str());
 444
 445         DebugOut()<<"Dataset size "<<data.size()<<endl;
 446
 447         for(auto i=0;i<data.size();i++)
 448         {
 449                 if(data[i].size() != 6)
 450                         continue;
 451
 452                 DBObject dbobj;
 453                 dbobj.key = data[i][0];
 454                 dbobj.value = data[i][1];
 455                 dbobj.source = data[i][2];
 456                 dbobj.zone = boost::lexical_cast<double>(data[i][3]);
 457                 dbobj.time = boost::lexical_cast<double>(data[i][4]);
 458                 dbobj.sequence = boost::lexical_cast<double>(data[i][5]);
 459
 460                 AbstractPropertyType* property = VehicleProperty::getPropertyTypeForPropertyNameValue(dbobj.key, dbobj.value);
 461                 if(property)
 462                 {
 463                         property->timestamp = dbobj.time;
 464                         property->sequence = dbobj.sequence;
 465
 466                         reply->values.push_back(property);
 467                 }
 468         }
 469
 470         reply->success = true;
 471         reply->completed(reply);
 472
 473         delete db;
 474 }
 475
 476 AsyncPropertyReply *DatabaseSink::setProperty(AsyncSetPropertyRequest request)
 477 {
 478         AsyncPropertyReply* reply = AmbPluginImpl::setProperty(request);
 479
 480         if(request.property == DatabaseLogging)
 481         {
 482                 if(request.value->value<bool>())
 483                 {
 484                         startDb();
 485                 }
 486                 else
 487                 {
 488                         stopDb();
 489                 }
 490         }
 491         else if(request.property == DatabaseFile)
 492         {
 493                 setDatabaseFileName(databaseName->value<std::string>());
 494         }
 495         else if( request.property == DatabasePlayback)
 496         {
 497                 if(request.value->value<bool>())
 498                 {
 499                         startPlayback();
 500                 }
 501                 else
 502                 {
 503                         if(playbackShared)
 504                                 playbackShared->stop = true;
 505
 506                         playback = false;
 507                 }
 508         }
 509
 510         return reply;
 511 }
 512
 513 void DatabaseSink::subscribeToPropertyChanges(VehicleProperty::Property )
 514 {
 515
 516 }
 517
 518 void DatabaseSink::unsubscribeToPropertyChanges(VehicleProperty::Property )
 519 {
 520 }
 521