source: ntrip/trunk/BNC/src/latencychecker.cpp@ 6644

Last change on this file since 6644 was 6644, checked in by weber, 9 years ago

Bug in reconnect message fixed
File size: 15.2 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}
161
162// Destructor
163//////////////////////////////////////////////////////////////////////////////
164latencyChecker::~latencyChecker() {
165}
166
167// Perform 'Begin outage' check
168//////////////////////////////////////////////////////////////////////////////
169void latencyChecker::checkReconnect() {
170
171 // Begin outage threshold
172 // ----------------------
173 if ( _decodeStop.isValid() ) {
174 if ( _decodeStop.secsTo(QDateTime::currentDateTime()) > _adviseFail * 60 ) {
175 _decodeStop.setDate(QDate());
176 _decodeStop.setTime(QTime());
177 _begDateOut = _checkTime.toUTC().date().toString("yy-MM-dd");
178 _begTimeOut = _checkTime.toUTC().time().toString("hh:mm:ss");
179 emit(newMessage((_staID
180 + ": Failure threshold exceeded, outage since "
181 + _begDateOut + " " + _begTimeOut).toAscii(), true));
182 callScript(("Begin_Outage "
183 + _begDateOut + " " + _begTimeOut).toAscii());
184 }
185 }
186}
187
188// Perform Corrupt and 'End outage' check
189//////////////////////////////////////////////////////////////////////////////
190void latencyChecker::checkOutage(bool decoded) {
191
192 if (_inspSegm == 0) { return;}
193
194 if (decoded) { _numSucc += 1; }
195
196 if (!_checkPause.isValid() || _checkPause.secsTo(QDateTime::currentDateTime()) >= _currPause ) {
197 if (!_checkSeg) {
198 if ( _checkTime.secsTo(QDateTime::currentDateTime()) > _inspSegm ) {
199 _checkSeg = true;
200 }
201 }
202
203 // Check - once per inspect segment
204 // --------------------------------
205 if (_checkSeg) {
206
207 _checkTime = QDateTime::currentDateTime();
208
209 if (_numSucc > 0) {
210 _secSucc += _inspSegm;
211 _decodeSucc = QDateTime::currentDateTime();
212 if (_secSucc > _adviseReco * 60) {
213 _secSucc = _adviseReco * 60 + 1;
214 }
215 _numSucc = 0;
216 _currPause = _initPause;
217 _checkPause.setDate(QDate());
218 _checkPause.setTime(QTime());
219 }
220 else {
221 _secFail += _inspSegm;
222 _secSucc = 0;
223 if (_secFail > _adviseFail * 60) {
224 _secFail = _adviseFail * 60 + 1;
225 }
226 if (!_checkPause.isValid()) {
227 _checkPause = QDateTime::currentDateTime();
228 }
229 else {
230 _checkPause.setDate(QDate());
231 _checkPause.setTime(QTime());
232 _secFail = _secFail + _currPause - _inspSegm;
233 _currPause = _currPause * 2;
234 if (_currPause > 960) {
235 _currPause = 960;
236 }
237 }
238 }
239
240 // End corrupt threshold
241 // ---------------------
242 if ( _begCorrupt && !_endCorrupt && _secSucc > _adviseReco * 60 ) {
243 _endDateCor = QDateTime::currentDateTime()
244 .addSecs(- _adviseReco * 60)
245 .toUTC().date().toString("yy-MM-dd");
246 _endTimeCor = QDateTime::currentDateTime()
247 .addSecs(- _adviseReco * 60)
248 .toUTC().time().toString("hh:mm:ss");
249 emit(newMessage((_staID
250 + ": Recovery threshold exceeded, corruption ended "
251 + _endDateCor + " " + _endTimeCor).toAscii(), true));
252 callScript(("End_Corrupted "
253 + _endDateCor + " " + _endTimeCor + " Begin was "
254 + _begDateCor + " " + _begTimeCor).toAscii());
255 _endCorrupt = true;
256 _begCorrupt = false;
257 _secFail = 0;
258 }
259 else {
260
261 // Begin corrupt threshold
262 // -----------------------
263 if ( !_begCorrupt && _secFail > _adviseFail * 60 ) {
264 _begDateCor = _decodeSucc.toUTC().date().toString("yy-MM-dd");
265 _begTimeCor = _decodeSucc.toUTC().time().toString("hh:mm:ss");
266 emit(newMessage((_staID
267 + ": Failure threshold exceeded, corrupted since "
268 + _begDateCor + " " + _begTimeCor).toAscii(), true));
269 callScript(("Begin_Corrupted "
270 + _begDateCor + " " + _begTimeCor).toAscii());
271 _begCorrupt = true;
272 _endCorrupt = false;
273 _secSucc = 0;
274 _numSucc = 0;
275 }
276 }
277 _checkSeg = false;
278 }
279 }
280
281 if ( !_decodeStop.isValid()) {
282 _decodeStart = QDateTime::currentDateTime();
283 }
284
285 // End outage threshold
286 // --------------------
287 if ( _decodeStart.isValid() ) {
288 if ( _decodeStart.secsTo(QDateTime::currentDateTime()) > _adviseReco * 60 ) {
289 _decodeStart.setDate(QDate());
290 _decodeStart.setTime(QTime());
291 _endDateOut = QDateTime::currentDateTime()
292 .addSecs(- _adviseReco * 60)
293 .toUTC().date().toString("yy-MM-dd");
294 _endTimeOut = QDateTime::currentDateTime()
295 .addSecs(- _adviseReco * 60)
296 .toUTC().time().toString("hh:mm:ss");
297 emit(newMessage((_staID
298 + ": Recovery threshold exceeded, outage ended "
299 + _endDateOut + " " + _endTimeOut).toAscii(), true));
300 callScript(("End_Outage "
301 + _endDateOut + " " + _endTimeOut + " Begin was "
302 + _begDateOut + " " + _begTimeOut).toAscii());
303 }
304 }
305 _decodeStop = QDateTime::currentDateTime();
306}
307
308// Perform latency checks (observations)
309//////////////////////////////////////////////////////////////////////////////
310void latencyChecker::checkObsLatency(const QList<t_satObs>& obsList) {
311
312 if (_perfIntr > 0 ) {
313
314 QListIterator<t_satObs> it(obsList);
315 while (it.hasNext()) {
316 const t_satObs& obs = it.next();
317
318 _newSecGPS = static_cast<int>(obs._time.gpssec());
319 if (_newSecGPS != _oldSecGPS) {
320 if (_newSecGPS % _perfIntr < _oldSecGPS % _perfIntr) {
321 if (_numLat > 0) {
322 if (_meanDiff > 0.0) {
323 if ( _checkMountPoint == _staID || _checkMountPoint == "ALL" ) {
324 emit( newMessage(QString("%1: Mean latency %2 sec, min %3, max %4, rms %5, %6 epochs, %7 gaps")
325 .arg(_staID.data())
326 .arg(int(_sumLat/_numLat*100)/100.)
327 .arg(int(_minLat*100)/100.)
328 .arg(int(_maxLat*100)/100.)
329 .arg(int((sqrt((_sumLatQ - _sumLat * _sumLat / _numLat)/_numLat))*100)/100.)
330 .arg(_numLat)
331 .arg(_numGaps)
332 .toAscii(), true) );
333 }
334 } else {
335 if ( _checkMountPoint == _staID || _checkMountPoint == "ALL" ) {
336 emit( newMessage(QString("%1: Mean latency %2 sec, min %3, max %4, rms %5, %6 epochs")
337 .arg(_staID.data())
338 .arg(int(_sumLat/_numLat*100)/100.)
339 .arg(int(_minLat*100)/100.)
340 .arg(int(_maxLat*100)/100.)
341 .arg(int((sqrt((_sumLatQ - _sumLat * _sumLat / _numLat)/_numLat))*100)/100.)
342 .arg(_numLat)
343 .toAscii(), true) );
344 }
345 }
346 }
347 _meanDiff = _diffSecGPS / _numLat;
348 _diffSecGPS = 0;
349 _numGaps = 0;
350 _sumLat = 0.0;
351 _sumLatQ = 0.0;
352 _numLat = 0;
353 _minLat = _maxDt;
354 _maxLat = -_maxDt;
355 }
356 if (_followSec) {
357 _diffSecGPS += _newSecGPS - _oldSecGPS;
358 if (_meanDiff>0.) {
359 if (_newSecGPS - _oldSecGPS > 1.5 * _meanDiff) {
360 _numGaps += 1;
361 }
362 }
363 }
364
365 // Compute the observations latency
366 // --------------------------------
367 int week;
368 double sec;
369 currentGPSWeeks(week, sec);
370 const double secPerWeek = 7.0 * 24.0 * 3600.0;
371 if (week < int(obs._time.gpsw())) {
372 week += 1;
373 sec -= secPerWeek;
374 }
375 if (week > int(obs._time.gpsw())) {
376 week -= 1;
377 sec += secPerWeek;
378 }
379 _curLat = sec - obs._time.gpssec();
380 _sumLat += _curLat;
381 _sumLatQ += _curLat * _curLat;
382 if (_curLat < _minLat) {
383 _minLat = _curLat;
384 }
385 if (_curLat >= _maxLat) {
386 _maxLat = _curLat;
387 }
388 _numLat += 1;
389 _oldSecGPS = _newSecGPS;
390 _followSec = true;
391 }
392 }
393 }
394}
395
396// Perform latency checks (corrections)
397//////////////////////////////////////////////////////////////////////////////
398void latencyChecker::checkCorrLatency(int corrGPSEpochTime) {
399
400 if (corrGPSEpochTime < 0) {
401 return;
402 }
403
404 if (_perfIntr > 0) {
405
406 _newSecGPS = corrGPSEpochTime;
407
408 int week;
409 double sec;
410 currentGPSWeeks(week, sec);
411 double dt = fabs(sec - _newSecGPS);
412 const double secPerWeek = 7.0 * 24.0 * 3600.0;
413 if (dt > 0.5 * secPerWeek) {
414 if (sec > _newSecGPS) {
415 sec -= secPerWeek;
416 } else {
417 sec += secPerWeek;
418 }
419 }
420 if (_newSecGPS != _oldSecGPS) {
421 if (int(_newSecGPS) % _perfIntr < int(_oldSecGPS) % _perfIntr) {
422 if (_numLat>0) {
423 QString late;
424 if (_meanDiff>0.) {
425 late = QString(": Mean latency %1 sec, min %2, max %3, rms %4, %5 epochs, %6 gaps")
426 .arg(int(_sumLat/_numLat*100)/100.)
427 .arg(int(_minLat*100)/100.)
428 .arg(int(_maxLat*100)/100.)
429 .arg(int((sqrt((_sumLatQ - _sumLat * _sumLat / _numLat)/_numLat))*100)/100.)
430 .arg(_numLat)
431 .arg(_numGaps);
432 if ( _checkMountPoint == _staID || _checkMountPoint == "ALL" ) {
433 emit(newMessage(QString(_staID + late ).toAscii(), true) );
434 }
435 }
436 else {
437 late = QString(": Mean latency %1 sec, min %2, max %3, rms %4, %5 epochs")
438 .arg(int(_sumLat/_numLat*100)/100.)
439 .arg(int(_minLat*100)/100.)
440 .arg(int(_maxLat*100)/100.)
441 .arg(int((sqrt((_sumLatQ - _sumLat * _sumLat / _numLat)/_numLat))*100)/100.)
442 .arg(_numLat);
443 if ( _checkMountPoint == _staID || _checkMountPoint == "ALL" ) {
444 emit(newMessage(QString(_staID + late ).toAscii(), true) );
445 }
446 }
447 }
448 _meanDiff = int(_diffSecGPS)/_numLat;
449 _diffSecGPS = 0;
450 _numGaps = 0;
451 _sumLat = 0.0;
452 _sumLatQ = 0.0;
453 _numLat = 0;
454 _minLat = 1000.;
455 _maxLat = -1000.;
456 }
457 if (_followSec) {
458 _diffSecGPS += _newSecGPS - _oldSecGPS;
459 if (_meanDiff>0.) {
460 if (_newSecGPS - _oldSecGPS > 1.5 * _meanDiff) {
461 _numGaps += 1;
462 }
463 }
464 }
465 _curLat = sec - _newSecGPS;
466 _sumLat += _curLat;
467 _sumLatQ += _curLat * _curLat;
468 if (_curLat < _minLat) {
469 _minLat = _curLat;
470 }
471 if (_curLat >= _maxLat) {
472 _maxLat = _curLat;
473 }
474 _numLat += 1;
475 _oldSecGPS = _newSecGPS;
476 _followSec = true;
477 }
478 }
479}
480
481// Call advisory notice script
482////////////////////////////////////////////////////////////////////////////
483void latencyChecker::callScript(const char* comment) {
484 if (!_adviseScript.isEmpty()) {
485#ifdef WIN32
486 Sleep(1);
487 QProcess::startDetached(_adviseScript, QStringList() << _staID << comment) ;
488#else
489 sleep(1);
490 QProcess::startDetached("nohup", QStringList() << _adviseScript << _staID << comment) ;
491#endif
492 }
493}
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