QPidLogger Class Reference

#include <qpidlogger.h>

Inheritance diagram for QPidLogger:

Public Slots
void	logChannelNames (QStringList names)
void	logChannelValues (QcepDoubleList values)
void	logString (QString str)
void	printMessage (QString msg, QDateTime ts=QDateTime::currentDateTime())

Public Member Functions
	QPidLogger (QcepSettingsSaverWPtr saver, QPidControllerWPtr ctrl)
void	writeSettings (QSettings *set, QString section)
void	readSettings (QSettings *set, QString section)

Protected Member Functions
void	openLogFileIfNeeded ()

Properties
bool	enabled
QString	fileName
double	updateInterval
int	pointLimit
int	scanNumber
int	pointCount
QStringList	channelNames

Private Slots
void	onFilenameChanged (QString name, int n)

Private Attributes
QPidObjectNamer	m_ObjectNamer
QcepSettingsSaverWPtr	m_Saver
QPidControllerWPtr	m_Controller
FILE *	m_File

Detailed Description

Definition at line 12 of file qpidlogger.h.

Constructor & Destructor Documentation

QPidLogger::QPidLogger ( QcepSettingsSaverWPtr  saver, QPidControllerWPtr  ctrl  )

explicit

Definition at line 8 of file qpidlogger.cpp.

References onFilenameChanged().

                                                                           :
  m_ObjectNamer(this, "logger"),
  m_Saver(saver),
  m_Controller(ctrl),
  m_File(NULL),
  m_Enabled(m_Saver, this, "enabled", true, "Logging Enabled?"),
  m_FileName(m_Saver, this, "fileName", "pidctrl.log", "Log file name"),
  m_UpdateInterval(m_Saver, this, "updateInterval", 30, "Logging interval (seconds)"),
  m_PointLimit(m_Saver, this, "pointLimit", 0, "Start new log scan after this many points"),
  m_ScanNumber(m_Saver, this, "scanNumber", 0, "Log file scan number"),
  m_PointCount(QcepSettingsSaverPtr(), this, "pointCount", 0, "Number of points in current log scan"),
  m_ChannelNames(QcepSettingsSaverPtr(), this, "channelNames", QStringList(), "Log File Column Names")
{
  connect(prop_FileName(), SIGNAL(valueChanged(QString,int)), this, SLOT(onFilenameChanged(QString, int)));
}

Member Function Documentation

void QPidLogger::logChannelNames ( QStringList  names )

slot

Definition at line 24 of file qpidlogger.cpp.

References DEBUG_LOGGER, and printMessage().

{
  if (QThread::currentThread() != thread()) {
    INVOKE_CHECK(QMetaObject::invokeMethod(this, "logChannelNames", Q_ARG(QStringList, names)));
  } else {
    if (qcepDebug(DEBUG_LOGGER)) {
      printMessage(tr("QPidLogger::logChannelNames %1 ,...").arg(names.value(0)));
    }

    set_ChannelNames(names);
  }
}

void QPidLogger::logChannelValues ( QcepDoubleList  values )

slot

Definition at line 37 of file qpidlogger.cpp.

References DEBUG_LOGGER, m_File, openLogFileIfNeeded(), and printMessage().

{
  if (QThread::currentThread() != thread()) {
    INVOKE_CHECK(QMetaObject::invokeMethod(this, "logChannelValues", Q_ARG(QcepDoubleList, values)));
  } else {
    if (qcepDebug(DEBUG_LOGGER)) {
      printMessage(tr("QPidLogger::logChannelValues %1 ,...").arg(values.value(0)));
    }

    if (get_Enabled()) {
      openLogFileIfNeeded();

      if (m_File) {
        if (get_PointCount() == 0) {
          QStringList names = get_ChannelNames();

          int n = names.length();

          fprintf(m_File, "#S %d qpid timescan \"%s\" %g\n",
                  get_ScanNumber(),
                  qPrintable(get_FileName()),
                  get_UpdateInterval());

          fprintf(m_File, "#D %s\n", qPrintable(QDateTime::currentDateTime().toString("ddd MMM d hh:mm:ss yyyy")));
          fprintf(m_File, "#N %d\n", n);
          fprintf(m_File, "#L ");

          if (n) {
            fprintf(m_File, "%s", qPrintable(names[0]));
          }

          for (int i=1; i<n; i++) {
            fprintf(m_File, "  %s", qPrintable(names[i]));
          }

          fprintf(m_File, "\n");
          fflush(m_File);

          prop_ScanNumber()->incValue(1);
        }

        int n = values.length();

        if (n) {
          fprintf(m_File, "%0.15g", values.value(0));
        }

        for (int i=1; i<n; i++) {
          fprintf(m_File, "\t%0.15g", values.value(i));
        }

        fprintf(m_File, "\n");
        fflush(m_File);

        prop_PointCount()->incValue(1);

        if ((get_PointLimit() > 0) && (get_PointCount() > get_PointLimit())) {
          set_PointCount(0);
        }
      }
    }
  }
}

void QPidLogger::logString ( QString  str )

slot

Definition at line 101 of file qpidlogger.cpp.

References DEBUG_LOGGER, m_File, openLogFileIfNeeded(), and printMessage().

{
  if (QThread::currentThread() != thread()) {
    INVOKE_CHECK(QMetaObject::invokeMethod(this, "logString", Q_ARG(QString, str)));
  } else {
    if (qcepDebug(DEBUG_LOGGER)) {
      printMessage(tr("QPidLogger::logString %1 ,...").arg(str));
    }

    if (get_Enabled()) {
      openLogFileIfNeeded();

      if (m_File) {
        fprintf(m_File, "#C %s. %s.\n", qPrintable(QDateTime::currentDateTime().toString("ddd MMM d hh:mm:ss yyyy")),
                                        qPrintable(str));
        fflush(m_File);
      }
    }
  }
}

void QPidLogger::onFilenameChanged ( QString  name, int  n  )

privateslot

Definition at line 158 of file qpidlogger.cpp.

References m_File.

Referenced by QPidLogger().

{
  if (m_File) {
    fclose(m_File);

    m_File = NULL;
  }
}

void QPidLogger::openLogFileIfNeeded ( )

protected

Definition at line 122 of file qpidlogger.cpp.

References m_File, and printMessage().

Referenced by logChannelValues(), and logString().

{
  if (m_File == NULL) {
    FILE *f = fopen(qPrintable(get_FileName()), "a+");

    if (f) {
      m_File = f;

      rewind(m_File);

      char buff[4096];
      int  scan=0;

      do {
        fgets(buff, sizeof(buff), m_File);

        if (ferror(m_File)) {
          printMessage(tr("File error %1").arg(errno));
        }

        if (sscanf(buff, "#S %d", &scan) == 1) {
          set_ScanNumber(scan+1);
        }
      } while(!feof(m_File));

      fprintf(m_File, "#F %s\n", qPrintable(get_FileName()));
      fprintf(m_File, "#E %d\n", QDateTime::currentDateTime().toTime_t());
      fprintf(m_File, "#D %s\n", qPrintable(QDateTime::currentDateTime().toString("ddd MMM d hh:mm:ss yyyy")));
      fflush(m_File);
    } else {
      printMessage("Couldn't open log file");
      set_Enabled(false);
    }
  }
}

void QPidLogger::printMessage ( QString  msg, QDateTime  ts = QDateTime::currentDateTime()  )

slot

Definition at line 167 of file qpidlogger.cpp.

References m_Controller.

Referenced by logChannelNames(), logChannelValues(), logString(), and openLogFileIfNeeded().

{
  QPidControllerPtr ctl(m_Controller);

  if (ctl) {
    ctl->printMessage(msg, ts);
  }
}

void QPidLogger::readSettings	(	QSettings *	set,
		QString	section
	)

Definition at line 181 of file qpidlogger.cpp.

{
  QcepProperty::readSettings(this, &staticMetaObject, section, set);
}

void QPidLogger::writeSettings	(	QSettings *	set,
		QString	section
	)

Definition at line 176 of file qpidlogger.cpp.

{
  QcepProperty::writeSettings(this, &staticMetaObject, section, set);
}

Member Data Documentation

QPidControllerWPtr QPidLogger::m_Controller

private

Definition at line 38 of file qpidlogger.h.

Referenced by printMessage().

FILE* QPidLogger::m_File

private

Definition at line 39 of file qpidlogger.h.

Referenced by logChannelValues(), logString(), onFilenameChanged(), and openLogFileIfNeeded().

QPidObjectNamer QPidLogger::m_ObjectNamer

private

Definition at line 36 of file qpidlogger.h.

QcepSettingsSaverWPtr QPidLogger::m_Saver

private

Definition at line 37 of file qpidlogger.h.

Property Documentation

QStringList QPidLogger::channelNames

readwrite

Definition at line 60 of file qpidlogger.h.

bool QPidLogger::enabled

readwrite

Definition at line 42 of file qpidlogger.h.

QString QPidLogger::fileName

readwrite

Definition at line 45 of file qpidlogger.h.

int QPidLogger::pointCount

readwrite

Definition at line 57 of file qpidlogger.h.

int QPidLogger::pointLimit

readwrite

Definition at line 51 of file qpidlogger.h.

int QPidLogger::scanNumber

readwrite

Definition at line 54 of file qpidlogger.h.

double QPidLogger::updateInterval

readwrite

Definition at line 48 of file qpidlogger.h.

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The documentation for this class was generated from the following files:

• qpidlogger.h
• qpidlogger.cpp