ProgressBar.cc

#include "otsdaq/ProgressBar/ProgressBar.h"
#include "otsdaq/Macros/CoutMacros.h"
#include "otsdaq/Macros/StringMacros.h"
#include "otsdaq/MessageFacility/MessageFacility.h"
 
#include <dirent.h>  //for DIR
#include <sys/stat.h>
#include <cassert>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <iostream>
 
using namespace ots;
 
//==============================================================================
ProgressBar::ProgressBar()
    : cProgressBarFilePath_(std::string(__ENV__("SERVICE_DATA_PATH")) +
                            "/ProgressBarData/")
    , cProgressBarFileExtension_(".txt")
    , totalStepsFileName_("")
    , stepCount_(0)
    , stepsToComplete_(0)
    , started_(false)
{
    std::string path = cProgressBarFilePath_;
    DIR*        dir  = opendir(path.c_str());
    if(dir)
        closedir(dir);
    else if(-1 == mkdir(path.c_str(), 0755))
    {
        // lets create the service folder (for first time)
        __SS__ << "Service directory creation failed: " << path << std::endl;
        __SS_THROW__;
    }
}  //end constructor()
 
//==============================================================================
void ProgressBar::reset(std::string file, std::string lineNumber, int id)
{
    std::lock_guard<std::mutex> lock(theMutex_);  // lock out for remainder of scope
 
    stepCount_       = 0;
    stepsToComplete_ = 0;
 
    // try to load stepsToComplete based on file, lineNumber and id
    char fn[1000];
    sprintf(fn, "%s_%s_%d", file.c_str(), lineNumber.c_str(), id);
 
    for(unsigned int c = 0; c < strlen(fn); ++c)
        if(!((fn[c] >= '0' && fn[c] <= '9') || (fn[c] >= 'a' && fn[c] <= 'z') ||
             (fn[c] >= 'A' && fn[c] <= 'Z')))
            fn[c] = '_';
    totalStepsFileName_ = cProgressBarFilePath_ + fn + cProgressBarFileExtension_;
    __COUTVS__(10, totalStepsFileName_);
 
    FILE* fp = fopen(totalStepsFileName_.c_str(), "r");
    if(fp)
    {
        fscanf(fp, "%d", &stepsToComplete_);
        fclose(fp);
        __COUTS__(10) << "File Found - stepsToComplete = " << stepsToComplete_
                      << std::endl;
    }
    else
        __COUTT__ << "File Not there: " << totalStepsFileName_ << __E__;
 
    started_ = true;
}  //end reset()
 
//==============================================================================
void ProgressBar::step()
{
    std::lock_guard<std::mutex> lock(theMutex_);  // lock out for remainder of scope
    ++stepCount_;
 
    // do not allow to get to 100% until complete (in case stepsToComplete is not constant for all time)
    if(stepsToComplete_ && stepCount_ >= stepsToComplete_)
        stepsToComplete_ = stepCount_ + 1;
 
    __COUTS__(10) << totalStepsFileName_ << " " << readPercentageString() << "% complete"
                  << std::endl;
}  //end step()
 
//==============================================================================
bool ProgressBar::isComplete()
{
    std::lock_guard<std::mutex> lock(theMutex_);  // lock out for remainder of scope
    return !started_;
}  //end isComplete()
 
//==============================================================================
void ProgressBar::complete()
{
    step();  // consider complete as a step
 
    std::lock_guard<std::mutex> lock(theMutex_);  // lock out for remainder of scope
 
    stepsToComplete_ = stepCount_;
    started_         = false;
 
    // done, save steps to file
 
    __COUTS__(10) << totalStepsFileName_ << std::endl;
 
    FILE* fp = fopen(totalStepsFileName_.c_str(), "w");
    if(fp)
    {
        fprintf(fp, "%d", stepsToComplete_);
        fclose(fp);
    }
    else
        __COUT_ERR__ << "Critical ERROR!" << std::endl;
}  //end complete()
 
//==============================================================================
int ProgressBar::read()
{
    std::lock_guard<std::mutex> lock(theMutex_);  // lock out for remainder of scope
 
    if(!started_)
        return 100;  // if no progress started, always return 100% complete
 
    if(stepsToComplete_)
        return stepCount_ * 100.0 / stepsToComplete_;
 
    return stepCount_ ? 50 : 0;
}  //end read()
 
//==============================================================================
std::string ProgressBar::readPercentageString()
{
    char pct[5];
    sprintf(pct, "%d", read());
    return pct;
}  //end readPercentageString()