StandardStreamOutput.cpp

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/*
 *  StandardStreamOutput.cxx
 *  ers
 *
 *  Created by Serguei Kolos on 02.08.07.
 *  Copyright 2007 CERN. All rights reserved.
 *
 */
#include <iomanip>
 
#include <ers/Issue.hpp>
#include <ers/StandardStreamOutput.hpp>
#include <ers/Severity.hpp>
#include <ers/internal/Util.hpp>
 
#include <boost/algorithm/string.hpp>
 
#define FIELD_SEPARATOR "\n\t"
 
namespace
{    
    std::function<std::string( const ers::Issue & issue )> getTimeFormatter()
    {
        static std::string format = ers::read_from_environment(
                    "DUNEDAQ_ERS_TIMESTAMP_FORMAT", "%Y-%b-%d %H:%M:%S");
 
    static const std::string precision = ers::read_from_environment(
            "DUNEDAQ_ERS_TIMESTAMP_PRECISION", "MILLI");
                        
        static const bool isUTC = ::getenv("DUNEDAQ_ERS_TIMESTAMP_UTC");
 
        if ( boost::algorithm::ifind_first(precision, "NANO") ) {
            return [](const ers::Issue & issue){
                return issue.time<std::chrono::nanoseconds>(format, isUTC);
            };
        }
 
        if ( boost::algorithm::ifind_first(precision, "MICRO") ) {
            return [](const ers::Issue & issue){
                return issue.time<std::chrono::microseconds>(format, isUTC);
            };
        }
 
        if ( boost::algorithm::ifind_first(precision, "MILLI") ) {
            return [](const ers::Issue & issue){
                return issue.time<std::chrono::milliseconds>(format, isUTC);
            };
        }
 
    return [](const ers::Issue & issue) {
            return issue.time(format, isUTC);
        };
    }
    
    const auto formatted_time = getTimeFormatter();
}
 
std::ostream &
ers::StandardStreamOutput::println( std::ostream & out, const Issue & issue, int verbosity )
{
    print( out, issue, verbosity );
    out << std::endl;
    return out;
}
 
std::ostream &
ers::StandardStreamOutput::print( std::ostream & out, const Issue & issue, int verbosity )
{
    if ( verbosity > -3 )
    {
    out << formatted_time( issue ) << " ";
    }
 
    if ( verbosity > -2 )
    {
    out << ers::to_string( issue.severity() ) << " ";
    }
 
    if ( verbosity > -1 )
    {
    out << "[" << issue.context().position( verbosity ) << "] ";
    }
 
    out << issue.message();
 
    if ( verbosity > 1 )
    {
    out << FIELD_SEPARATOR << "Parameters = ";
    for ( ers::string_map::const_iterator it = issue.parameters().begin(); it != issue.parameters().end(); ++it )
    {
        out << "'" << it->first << "=" << it->second << "' ";
    }
 
    out << FIELD_SEPARATOR << "Qualifiers = ";
    for ( std::vector<std::string>::const_iterator it = issue.qualifiers().begin(); it != issue.qualifiers().end(); ++it )
    {
        out << "'" << *it << "' ";
    }
    }
 
    if ( verbosity > 2 )
    {
    out << FIELD_SEPARATOR << "host = " << issue.context().host_name()
        << FIELD_SEPARATOR << "user = " << issue.context().user_name()
                   << " (" << issue.context().user_id() << ")"
        << FIELD_SEPARATOR << "process id = " << issue.context().process_id()
        << FIELD_SEPARATOR << "thread id = " << issue.context().thread_id()
        << FIELD_SEPARATOR << "process wd = " << issue.context().cwd();
    }
 
    if ( verbosity > 3 )
    {
    std::ios_base::fmtflags flags( out.flags() );
 
    out << std::left;
        std::vector<std::string> stack = issue.context().stack();
        out << FIELD_SEPARATOR << "stack trace of the crashing thread:";
    for( size_t i = 0; i < stack.size(); i++ )
    {
        out << FIELD_SEPARATOR << "  #" << std::setw(3) << i << stack[i];
    }
        // restore the original state
    out.flags( flags );
    }
 
    if ( issue.cause() )
    {
    out << FIELD_SEPARATOR << "was caused by: " << *issue.cause();
    }
    
    return out;
}