PerfLog.h

//------------------------------------------------------------------------------
/*
    This file is part of rippled: https://github.com/ripple/rippled
    Copyright (c) 2018 Ripple Labs Inc.
 
    Permission to use, copy, modify, and/or distribute this software for any
    purpose  with  or without fee is hereby granted, provided that the above
    copyright notice and this permission notice appear in all copies.
 
    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
//==============================================================================
 
#ifndef RIPPLE_BASICS_PERFLOG_H
#define RIPPLE_BASICS_PERFLOG_H
 
#include <ripple/core/JobTypes.h>
#include <boost/filesystem.hpp>
#include <ripple/json/json_value.h>
#include <chrono>
#include <cstdint>
#include <functional>
#include <memory>
#include <string>
 
namespace beast { class Journal; }
 
namespace ripple {
namespace perf {
 
class PerfLog
{
public:
    using steady_clock = std::chrono::steady_clock;
    using system_clock = std::chrono::system_clock;
    using steady_time_point = std::chrono::time_point<steady_clock>;
    using system_time_point = std::chrono::time_point<system_clock>;
    using seconds = std::chrono::seconds;
    using milliseconds = std::chrono::milliseconds;
    using microseconds = std::chrono::microseconds;
 
    struct Setup
    {
        boost::filesystem::path perfLog;
        // log_interval is in milliseconds to support faster testing.
        milliseconds logInterval {seconds(1)};
    };
 
    virtual ~PerfLog() = default;
 
    virtual void rpcStart(std::string const& method,
        std::uint64_t requestId) = 0;
 
    virtual void rpcFinish(std::string const& method,
        std::uint64_t requestId) = 0;
 
    virtual void rpcError(std::string const& method,
        std::uint64_t requestId) = 0;
 
    virtual void jobQueue(JobType const type) = 0;
 
    virtual void jobStart(JobType const type,
        microseconds dur,
        steady_time_point startTime,
        int instance) = 0;
 
    virtual void jobFinish(JobType const type,
        microseconds dur, int instance) = 0;
 
    virtual Json::Value countersJson() const = 0;
 
    virtual Json::Value currentJson() const = 0;
 
    virtual void resizeJobs(int const resize) = 0;
 
    virtual void rotate() = 0;
};
 
} //perf
 
class Section;
class Stoppable;
 
namespace perf {
 
PerfLog::Setup setup_PerfLog(Section const& section,
    boost::filesystem::path const& configDir);
 
std::unique_ptr<PerfLog> make_PerfLog(
    PerfLog::Setup const& setup,
    Stoppable& parent,
    beast::Journal journal,
    std::function<void()>&& signalStop);
 
} // perf
} // ripple
 
#endif //RIPPLE_BASICS_PERFLOG_H