data_source_prefix_helpers.hpp

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/*
 * SObjectizer-5
 */
 
/*!
 * \since
 * v.5.5.4
 * 
 * \file
 * \brief Helpers creation of data source name prefixes.
 */
 
#pragma once
 
#include <so_5/stats/prefix.hpp>
 
#include <so_5/details/ios_helpers.hpp>
 
#include <sstream>
 
namespace so_5 {
 
namespace disp {
 
namespace reuse {
 
namespace ios_helpers = so_5::details::ios_helpers;
 
/*!
 * \since
 * v.5.5.4
 * 
 * \brief Create basic prefix for dispatcher data source names.
 */
inline so_5::stats::prefix_t
make_disp_prefix(
  //! Textual marker of dispatcher type (like ot, ao, ag, tp, atp, ...).
  const std::string_view disp_type,
  //! User-supplied optional base for name. Can be empty.
  const std::string_view data_sources_name_base,
  //! Pointer to dispatcher instance.
  //! Will be used if \a data_sources_name_base is empty.
  const void * disp_this_pointer )
  {
    const std::size_t max_name_base_fragment = 24;
    std::ostringstream ss;
 
    ss << "disp/" << disp_type << "/";
    if( !data_sources_name_base.empty() )
      ss << ios_helpers::length_limited_string{
          data_sources_name_base,
          max_name_base_fragment };
    else
      ss << ios_helpers::pointer{ disp_this_pointer };
 
    return so_5::stats::prefix_t{ ss.str() };
  }
 
/*!
 * \since
 * v.5.5.4
 * 
 * \brief Create prefix for dispatcher's working thread data source.
 */
inline so_5::stats::prefix_t
make_disp_working_thread_prefix(
  //! Prefix for the dispatcher.
  const so_5::stats::prefix_t & disp_prefix,
  //! Thread ordinal number.
  std::size_t thread_number )
  {
    std::ostringstream ss;
    ss << disp_prefix.c_str() << "/wt-" << thread_number;
 
    return ss.str();
  }
 
} /* namespace reuse */
 
} /* namespace disp */
 
} /* namespace so_5 */