ProgressData.cc

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/*---------------------------------------------------------------------\
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|                           / / \ V /|  _/  _/                         |
|                          / /__ | | | | | |                           |
|                         /_____||_| |_| |_|                           |
|                                                                      |
\---------------------------------------------------------------------*/
#include <iostream>
#include "zypp/base/Logger.h"
#include "zypp/base/InputStream.h"
#include "zypp/base/String.h"

#include "zypp/ProgressData.h"

using std::endl;

#undef  ZYPP_BASE_LOGGER_LOGGROUP
#define  ZYPP_BASE_LOGGER_LOGGROUP "Progress"

namespace zypp
{ 

  //
  //    METHOD NAME : ProgressData::report
  //    METHOD TYPE : void
  //
  bool ProgressData::report()
  {
    bool goOn     = true;  // continue per default
    bool doReport = false;

    // compute value and check whether to report it
    if ( hasRange() )
    {
      value_type newVal = _d->_val * 100;
      newVal /= ( _d->_max - _d->_min );

      if ( newVal - _d->_last_val > 20
           || Date::now() - _d->_last_send > 1
           || ( newVal == 100 && _d->_last_send != 100 )
           || _d->_state == END )
      {
        _d->_last_val  = newVal;
        _d->_last_send = Date::now();
        doReport = true;
      }
    }
    else
    {
      if ( Date::now() - _d->_last_send > 1 || _d->_state == END )
      {
        _d->_last_val  = _d->_val;
        _d->_last_send = Date::now();
        doReport = true;
      }
    }

    // report if necessary
    if ( doReport )
    {
      if ( _d->_state == INIT )
      {
        _d->_state = RUN;
      }

      if ( _d->_receiver )
      {
        goOn = _d->_receiver( *this );
      }
      else
      {
        if ( _d->_state != END )
        {
          XXX << str::form( "{#%u|%s}(%lld%s)",
                            numericId(), name().c_str(),
                            _d->_last_val, ( hasRange() ? "%" : "!" ) ) << endl;
        }
        else
        {
          DBG << str::form( "{#%u|%s}END", numericId(), name().c_str() ) << endl;
        }
      }
    }

    // log abort request and return
    if ( ! goOn && _d->_state != END )
    {
      WAR << "User request to ABORT pending action. "
          << str::form( "{#%u|%s}(%lld%s)",
                        numericId(), name().c_str(),
                        _d->_last_val, ( hasRange() ? "%" : "!" ) ) << endl;
    }
    return goOn;
  }

  /******************************************************************
  **
  **    FUNCTION NAME : operator<<
  **    FUNCTION TYPE : std::ostream &
  */
  std::ostream & operator<<( std::ostream & str, const ProgressData & obj )
  {
    if ( obj.hasRange() )
    {
      return str << str::form( "{%u|%s}[%lld,%lld](%lld)%lld%%)",
                               obj.numericId(), obj.name().c_str(),
                               obj.min(), obj.max(), obj.val(), obj.reportValue() );
    }
    return str << str::form( "{%u|%s}[-,-](%lld)",
                             obj.numericId(), obj.name().c_str(),
                             obj.val() );
  }

  /******************************************************************
  **
  **    FUNCTION NAME : operator<<
  **    FUNCTION TYPE : std::ostream &
  */
  ProgressData makeProgressData( const InputStream & input_r )
  {
    ProgressData ret;
    ret.name( input_r.name() );
    if ( input_r.size() > 0 )
      ret.range( input_r.size() );
    return ret;
  }

  CombinedProgressData::CombinedProgressData( ProgressData &pd,
                                              ProgressData::value_type weight )
    : _weight(weight),
      _last_value(0),
      _pd(pd)
  {

  }

  bool CombinedProgressData::operator()( const ProgressData &progress )
  {
    if ( progress.reportAlive() || ( _weight == 0 ) )
      return _pd.tick();

    // factor [0,1] of increase in subtask ( ie: before 0,2 now 0.5 )
    float increment = ((float)(progress.val() - _last_value))/(progress.max() - progress.min());
    // how much the subtask affects the parent task ie: 0,1
    float parent_factor = (float)(_weight)/(_pd.max() - _pd.min());
    // real increment of the parent task
    float real_increment = parent_factor*increment;
    _last_value = progress.val();
    return _pd.incr( (int)( (_pd.max()-_pd.min()) * real_increment) );
  }

} // namespace zypp