source: ntrip/trunk/BNC/src/latencychecker.cpp@ 6805

Last change on this file since 6805 was 6805, checked in by weber, 9 years ago

Bug in stream Failure/Recovery message fixed
File size: 15.5 KB
Line 
1// Part of BNC, a utility for retrieving decoding and
2// converting GNSS data streams from NTRIP broadcasters.
3//
4// Copyright (C) 2007
5// German Federal Agency for Cartography and Geodesy (BKG)
6// http://www.bkg.bund.de
7// Czech Technical University Prague, Department of Geodesy
8// http://www.fsv.cvut.cz
9//
10// Email: euref-ip@bkg.bund.de
11//
12// This program is free software; you can redistribute it and/or
13// modify it under the terms of the GNU General Public License
14// as published by the Free Software Foundation, version 2.
15//
16// This program is distributed in the hope that it will be useful,
17// but WITHOUT ANY WARRANTY; without even the implied warranty of
18// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19// GNU General Public License for more details.
20//
21// You should have received a copy of the GNU General Public License
22// along with this program; if not, write to the Free Software
23// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24
25/* -------------------------------------------------------------------------
26 * BKG NTRIP Client
27 * -------------------------------------------------------------------------
28 *
29 * Class: latencyChecker
30 *
31 * Purpose: Check incoming GNSS data for latencies, gaps etc.
32 *
33 * Author: G. Weber
34 *
35 * Created: 02-Feb-2009
36 *
37 * Changes:
38 *
39 * -----------------------------------------------------------------------*/
40
41#include <iostream>
42
43#ifdef WIN32
44#include <windows.h>
45#else
46#include <unistd.h>
47#endif
48
49#include "latencychecker.h"
50#include "bnccore.h"
51#include "bncutils.h"
52#include "bncsettings.h"
53
54using namespace std;
55
56// Constructor
57//////////////////////////////////////////////////////////////////////////////
58latencyChecker::latencyChecker(QByteArray staID) {
59
60 _staID = staID;
61
62 connect(this, SIGNAL(newMessage(QByteArray,bool)),
63 BNC_CORE, SLOT(slotMessage(const QByteArray,bool)));
64
65 bncSettings settings;
66
67 // Notice threshold
68 // ----------------
69 QString obsRate = settings.value("obsRate").toString();
70 _inspSegm = 0;
71 if ( obsRate.isEmpty() ) {
72 _inspSegm = 0;
73 }
74 else if ( obsRate.indexOf("5 Hz") != -1 ) {
75 _inspSegm = 20;
76 }
77 else if ( obsRate.indexOf("1 Hz") != -1 ) {
78 _inspSegm = 10;
79 }
80 else if ( obsRate.indexOf("0.5 Hz") != -1 ) {
81 _inspSegm = 20;
82 }
83 else if ( obsRate.indexOf("0.2 Hz") != -1 ) {
84 _inspSegm = 40;
85 }
86 else if ( obsRate.indexOf("0.1 Hz") != -1 ) {
87 _inspSegm = 50;
88 }
89 _adviseFail = settings.value("adviseFail").toInt();
90 _adviseReco = settings.value("adviseReco").toInt();
91 _adviseScript = settings.value("adviseScript").toString();
92 expandEnvVar(_adviseScript);
93
94 // Latency interval/average
95 // ------------------------
96 _perfIntr = 1;
97 QString perfIntr = settings.value("perfIntr").toString();
98 if ( perfIntr.isEmpty() ) {
99 _perfIntr = 1;
100 }
101 else if ( perfIntr.indexOf("2 sec") != -1 ) {
102 _perfIntr = 2;
103 }
104 else if ( perfIntr.indexOf("10 sec") != -1 ) {
105 _perfIntr = 10;
106 }
107 else if ( perfIntr.indexOf("1 min") != -1 ) {
108 _perfIntr = 60;
109 }
110 else if ( perfIntr.left(5).indexOf("5 min") != -1 ) {
111 _perfIntr = 300;
112 }
113 else if ( perfIntr.indexOf("15 min") != -1 ) {
114 _perfIntr = 900;
115 }
116 else if ( perfIntr.indexOf("1 hour") != -1 ) {
117 _perfIntr = 3600;
118 }
119 else if ( perfIntr.indexOf("6 hours") != -1 ) {
120 _perfIntr = 21600;
121 }
122 else if ( perfIntr.indexOf("1 day") != -1 ) {
123 _perfIntr = 86400;
124 }
125
126 // RTCM message types
127 // ------------------
128 _checkMountPoint = settings.value("miscMount").toString();
129
130 // Initialize private members
131 // --------------------------
132 _maxDt = 1000.0;
133 _wrongEpoch = false;
134 _checkSeg = false;
135 _numSucc = 0;
136 _secSucc = 0;
137 _secFail = 0;
138 _initPause = 0;
139 _currPause = 0;
140 _begCorrupt = false;
141 _endCorrupt = false;
142 _followSec = false;
143 _oldSecGPS = 0;
144 _newSecGPS = 0;
145 _numGaps = 0;
146 _diffSecGPS = 0;
147 _numLat = 0;
148 _sumLat = 0.0;
149 _sumLatQ = 0.0;
150 _meanDiff = 0.0;
151 _minLat = _maxDt;
152 _maxLat = -_maxDt;
153 _curLat = 0.0;
154
155 _checkTime = QDateTime::currentDateTime();
156 _decodeSucc = QDateTime::currentDateTime();
157
158 _decodeStop = QDateTime::currentDateTime();
159
160 _begDateTimeOut = QDateTime::currentDateTime();
161 _endDateTimeOut = QDateTime::currentDateTime();
162
163 _fromReconnect = false;
164
165}
166
167// Destructor
168//////////////////////////////////////////////////////////////////////////////
169latencyChecker::~latencyChecker() {
170}
171
172// Perform 'Begin outage' check
173//////////////////////////////////////////////////////////////////////////////
174void latencyChecker::checkReconnect() {
175
176 if (_inspSegm == 0) { return;}
177
178 // Begin outage threshold
179 // ----------------------
180 if (!_fromReconnect) {
181 _endDateTimeOut = QDateTime::currentDateTime();
182 }
183 _fromReconnect = true;
184
185 if ( _decodeStop.isValid() ) {
186 _begDateTimeOut = QDateTime::currentDateTime();
187 if ( _endDateTimeOut.secsTo(QDateTime::currentDateTime()) > _adviseFail * 60 ) {
188 _begDateOut = _endDateTimeOut.toUTC().date().toString("yy-MM-dd");
189 _begTimeOut = _endDateTimeOut.toUTC().time().toString("hh:mm:ss");
190 emit(newMessage((_staID + ": Failure threshold exceeded, outage since "
191 + _begDateOut + " " + _begTimeOut + " UTC").toAscii(), true));
192 callScript(("Begin_Outage"
193 + _begDateOut + " " + _begTimeOut + " UTC").toAscii());
194 _decodeStop.setDate(QDate());
195 _decodeStop.setTime(QTime());
196 _decodeStart = QDateTime::currentDateTime();
197 }
198 }
199}
200
201// Perform Corrupt and 'End outage' check
202//////////////////////////////////////////////////////////////////////////////
203void latencyChecker::checkOutage(bool decoded) {
204
205 if (_inspSegm == 0) { return;}
206
207 if (decoded) { _numSucc += 1; }
208
209 if (!_checkPause.isValid() || _checkPause.secsTo(QDateTime::currentDateTime()) >= _currPause ) {
210 if (!_checkSeg) {
211 if ( _checkTime.secsTo(QDateTime::currentDateTime()) > _inspSegm ) {
212 _checkSeg = true;
213 }
214 }
215
216 // Check - once per inspect segment
217 // --------------------------------
218 if (_checkSeg) {
219
220 _checkTime = QDateTime::currentDateTime();
221
222 if (_numSucc > 0) {
223 _secSucc += _inspSegm;
224 _decodeSucc = QDateTime::currentDateTime();
225 if (_secSucc > _adviseReco * 60) {
226 _secSucc = _adviseReco * 60 + 1;
227 }
228 _numSucc = 0;
229 _currPause = _initPause;
230 _checkPause.setDate(QDate());
231 _checkPause.setTime(QTime());
232 }
233 else {
234 _secFail += _inspSegm;
235 _secSucc = 0;
236 if (_secFail > _adviseFail * 60) {
237 _secFail = _adviseFail * 60 + 1;
238 }
239 if (!_checkPause.isValid()) {
240 _checkPause = QDateTime::currentDateTime();
241 }
242 else {
243 _checkPause.setDate(QDate());
244 _checkPause.setTime(QTime());
245 _secFail = _secFail + _currPause - _inspSegm;
246 _currPause = _currPause * 2;
247 if (_currPause > 960) {
248 _currPause = 960;
249 }
250 }
251 }
252
253 // End corrupt threshold
254 // ---------------------
255 if ( _begCorrupt && !_endCorrupt && _secSucc > _adviseReco * 60 ) {
256 _endDateCor = QDateTime::currentDateTime()
257 .addSecs(- _adviseReco * 60)
258 .toUTC().date().toString("yy-MM-dd");
259 _endTimeCor = QDateTime::currentDateTime()
260 .addSecs(- _adviseReco * 60)
261 .toUTC().time().toString("hh:mm:ss");
262 emit(newMessage((_staID
263 + ": Recovery threshold exceeded, corruption ended "
264 + _endDateCor + " " + _endTimeCor + " UTC").toAscii(), true));
265 callScript(("End_Corrupted "
266 + _endDateCor + " " + _endTimeCor + " UTC Begin was "
267 + _begDateCor + " " + _begTimeCor + " UTC").toAscii());
268 _endCorrupt = true;
269 _begCorrupt = false;
270 _secFail = 0;
271 }
272 else {
273
274 // Begin corrupt threshold
275 // -----------------------
276 if ( !_begCorrupt && _secFail > _adviseFail * 60 ) {
277 _begDateCor = _decodeSucc.toUTC().date().toString("yy-MM-dd");
278 _begTimeCor = _decodeSucc.toUTC().time().toString("hh:mm:ss");
279 emit(newMessage((_staID
280 + ": Failure threshold exceeded, corrupted since "
281 + _begDateCor + " " + _begTimeCor + " UTC").toAscii(), true));
282 callScript(("Begin_Corrupted "
283 + _begDateCor + " " + _begTimeCor + " UTC").toAscii());
284 _begCorrupt = true;
285 _endCorrupt = false;
286 _secSucc = 0;
287 _numSucc = 0;
288 }
289 }
290 _checkSeg = false;
291 }
292 }
293
294 // End outage threshold
295 // --------------------
296 if (_fromReconnect) {
297 _begDateTimeOut = QDateTime::currentDateTime();
298 }
299 _fromReconnect = false;
300
301 if ( _decodeStart.isValid() ) {
302 _endDateTimeOut = QDateTime::currentDateTime();
303 if ( _begDateTimeOut.secsTo(QDateTime::currentDateTime()) > _adviseReco * 60 ) {
304 _endDateOut = _begDateTimeOut.toUTC().date().toString("yy-MM-dd");
305 _endTimeOut = _begDateTimeOut.toUTC().time().toString("hh:mm:ss");
306 emit(newMessage((_staID + ": Recovery threshold exceeded, outage ended "
307 + _endDateOut + " " + _endTimeOut + " UTC").toAscii(), true));
308 callScript(("End_Outage "
309 + _endDateOut + " " + _endTimeOut + " UTC Begin was "
310 + _begDateOut + " " + _begTimeOut + " UTC").toAscii());
311 _decodeStart.setDate(QDate());
312 _decodeStart.setTime(QTime());
313 _decodeStop = QDateTime::currentDateTime();
314 }
315 }
316}
317
318// Perform latency checks (observations)
319//////////////////////////////////////////////////////////////////////////////
320void latencyChecker::checkObsLatency(const QList<t_satObs>& obsList) {
321
322 if (_perfIntr > 0 ) {
323
324 QListIterator<t_satObs> it(obsList);
325 while (it.hasNext()) {
326 const t_satObs& obs = it.next();
327
328 _newSecGPS = static_cast<int>(obs._time.gpssec());
329 if (_newSecGPS != _oldSecGPS) {
330 if (_newSecGPS % _perfIntr < _oldSecGPS % _perfIntr) {
331 if (_numLat > 0) {
332 if (_meanDiff > 0.0) {
333 if ( _checkMountPoint == _staID || _checkMountPoint == "ALL" ) {
334 emit( newMessage(QString("%1: Mean latency %2 sec, min %3, max %4, rms %5, %6 epochs, %7 gaps")
335 .arg(_staID.data())
336 .arg(int(_sumLat/_numLat*100)/100.)
337 .arg(int(_minLat*100)/100.)
338 .arg(int(_maxLat*100)/100.)
339 .arg(int((sqrt((_sumLatQ - _sumLat * _sumLat / _numLat)/_numLat))*100)/100.)
340 .arg(_numLat)
341 .arg(_numGaps)
342 .toAscii(), true) );
343 }
344 } else {
345 if ( _checkMountPoint == _staID || _checkMountPoint == "ALL" ) {
346 emit( newMessage(QString("%1: Mean latency %2 sec, min %3, max %4, rms %5, %6 epochs")
347 .arg(_staID.data())
348 .arg(int(_sumLat/_numLat*100)/100.)
349 .arg(int(_minLat*100)/100.)
350 .arg(int(_maxLat*100)/100.)
351 .arg(int((sqrt((_sumLatQ - _sumLat * _sumLat / _numLat)/_numLat))*100)/100.)
352 .arg(_numLat)
353 .toAscii(), true) );
354 }
355 }
356 }
357 _meanDiff = _diffSecGPS / _numLat;
358 _diffSecGPS = 0;
359 _numGaps = 0;
360 _sumLat = 0.0;
361 _sumLatQ = 0.0;
362 _numLat = 0;
363 _minLat = _maxDt;
364 _maxLat = -_maxDt;
365 }
366 if (_followSec) {
367 _diffSecGPS += _newSecGPS - _oldSecGPS;
368 if (_meanDiff>0.) {
369 if (_newSecGPS - _oldSecGPS > 1.5 * _meanDiff) {
370 _numGaps += 1;
371 }
372 }
373 }
374
375 // Compute the observations latency
376 // --------------------------------
377 int week;
378 double sec;
379 currentGPSWeeks(week, sec);
380 const double secPerWeek = 7.0 * 24.0 * 3600.0;
381 if (week < int(obs._time.gpsw())) {
382 week += 1;
383 sec -= secPerWeek;
384 }
385 if (week > int(obs._time.gpsw())) {
386 week -= 1;
387 sec += secPerWeek;
388 }
389 _curLat = sec - obs._time.gpssec();
390 _sumLat += _curLat;
391 _sumLatQ += _curLat * _curLat;
392 if (_curLat < _minLat) {
393 _minLat = _curLat;
394 }
395 if (_curLat >= _maxLat) {
396 _maxLat = _curLat;
397 }
398 _numLat += 1;
399 _oldSecGPS = _newSecGPS;
400 _followSec = true;
401 }
402 }
403 }
404}
405
406// Perform latency checks (corrections)
407//////////////////////////////////////////////////////////////////////////////
408void latencyChecker::checkCorrLatency(int corrGPSEpochTime) {
409
410 if (corrGPSEpochTime < 0) {
411 return;
412 }
413
414 if (_perfIntr > 0) {
415
416 _newSecGPS = corrGPSEpochTime;
417
418 int week;
419 double sec;
420 currentGPSWeeks(week, sec);
421 double dt = fabs(sec - _newSecGPS);
422 const double secPerWeek = 7.0 * 24.0 * 3600.0;
423 if (dt > 0.5 * secPerWeek) {
424 if (sec > _newSecGPS) {
425 sec -= secPerWeek;
426 } else {
427 sec += secPerWeek;
428 }
429 }
430 if (_newSecGPS != _oldSecGPS) {
431 if (int(_newSecGPS) % _perfIntr < int(_oldSecGPS) % _perfIntr) {
432 if (_numLat>0) {
433 QString late;
434 if (_meanDiff>0.) {
435 late = QString(": Mean latency %1 sec, min %2, max %3, rms %4, %5 epochs, %6 gaps")
436 .arg(int(_sumLat/_numLat*100)/100.)
437 .arg(int(_minLat*100)/100.)
438 .arg(int(_maxLat*100)/100.)
439 .arg(int((sqrt((_sumLatQ - _sumLat * _sumLat / _numLat)/_numLat))*100)/100.)
440 .arg(_numLat)
441 .arg(_numGaps);
442 if ( _checkMountPoint == _staID || _checkMountPoint == "ALL" ) {
443 emit(newMessage(QString(_staID + late ).toAscii(), true) );
444 }
445 }
446 else {
447 late = QString(": Mean latency %1 sec, min %2, max %3, rms %4, %5 epochs")
448 .arg(int(_sumLat/_numLat*100)/100.)
449 .arg(int(_minLat*100)/100.)
450 .arg(int(_maxLat*100)/100.)
451 .arg(int((sqrt((_sumLatQ - _sumLat * _sumLat / _numLat)/_numLat))*100)/100.)
452 .arg(_numLat);
453 if ( _checkMountPoint == _staID || _checkMountPoint == "ALL" ) {
454 emit(newMessage(QString(_staID + late ).toAscii(), true) );
455 }
456 }
457 }
458 _meanDiff = int(_diffSecGPS)/_numLat;
459 _diffSecGPS = 0;
460 _numGaps = 0;
461 _sumLat = 0.0;
462 _sumLatQ = 0.0;
463 _numLat = 0;
464 _minLat = 1000.;
465 _maxLat = -1000.;
466 }
467 if (_followSec) {
468 _diffSecGPS += _newSecGPS - _oldSecGPS;
469 if (_meanDiff>0.) {
470 if (_newSecGPS - _oldSecGPS > 1.5 * _meanDiff) {
471 _numGaps += 1;
472 }
473 }
474 }
475 _curLat = sec - _newSecGPS;
476 _sumLat += _curLat;
477 _sumLatQ += _curLat * _curLat;
478 if (_curLat < _minLat) {
479 _minLat = _curLat;
480 }
481 if (_curLat >= _maxLat) {
482 _maxLat = _curLat;
483 }
484 _numLat += 1;
485 _oldSecGPS = _newSecGPS;
486 _followSec = true;
487 }
488 }
489}
490
491// Call advisory notice script
492////////////////////////////////////////////////////////////////////////////
493void latencyChecker::callScript(const char* comment) {
494 if (!_adviseScript.isEmpty()) {
495#ifdef WIN32
496 Sleep(1);
497 QProcess::startDetached(_adviseScript, QStringList() << _staID << comment) ;
498#else
499 sleep(1);
500 QProcess::startDetached("nohup", QStringList() << _adviseScript << _staID << comment) ;
501#endif
502 }
503}
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