Log.h

/*
 *
    Copyright (C) 2019-Present SKALE Labs

    This file is part of sgxwallet.

    skale-consensus is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published
    by the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    skale-consensus is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with skale-consensus.  If not, see <https://www.gnu.org/licenses/>.

    @file Log.h
    @author Stan Kladko
    @date 2019
*/


#ifndef _LOG_H
#define _LOG_H


#include <stdlib.h>
#include <iostream>
#include <map>
#include <memory>

#include "json/json.h"
#include "third_party/spdlog/spdlog.h"


#include "SGXException.h"
#include "InvalidArgumentException.h"
#include "InvalidStateException.h"

#include <boost/core/ignore_unused.hpp>
#include "common.h"

#include <shared_mutex>

using namespace std;


class Exception;


#define __CLASS_NAME__ className( __PRETTY_FUNCTION__ )

#define LOG(__SEVERITY__, __MESSAGE__) \
    cerr <<  to_string(__SEVERITY__) << " " <<  __MESSAGE__ << " " << className( __PRETTY_FUNCTION__ ) << endl;


enum level_enum {
    trace, debug, info, warn, err
};


class Log {

public:

    level_enum globalLogLevel;

    void setGlobalLogLevel(string &_s);

    static level_enum logLevelFromString(string &_s);

    static void handleSGXException(Json::Value &_result, SGXException &_e);
};


#define COUNT_STATISTICS \
static uint64_t __COUNT__ = 0; \
__COUNT__++; \
if (__COUNT__ % 1000 == 0) { \
spdlog::info(string(__FUNCTION__) +  " processed " + to_string(__COUNT__) + " requests"); \
struct sysinfo memInfo; \
sysinfo (&memInfo); \
long long totalPhysMem = memInfo.totalram; \
/*Multiply in next statement to avoid int overflow on right hand side...*/ \
totalPhysMem *= memInfo.mem_unit; \
int usedByCurrentProcess = getValue(); \
if ( 0.5 * totalPhysMem < usedByCurrentProcess ) { \
  exit(-103); \
} \
}



// if uknown error, the error is 10000 + line number


#define INIT_RESULT(__RESULT__)     Json::Value __RESULT__; \
              int errStatus = -1 * (10000 + __LINE__); boost::ignore_unused(errStatus); string errMsg(BUF_LEN, '\0');__RESULT__["status"] =  -1 * (10000 + __LINE__); __RESULT__["errorMessage"] = \
              string(__FUNCTION__); \
string(__FUNCTION__) + ": server error. Please see server log.";

#define HANDLE_SGX_EXCEPTION(__RESULT__) \
    catch (const SGXException& _e) { \
      if (_e.getStatus() != 0) {__RESULT__["status"] = _e.getStatus();} else { __RESULT__["status"]  = -1 * (10000 + __LINE__);}; \
      auto errStr = __FUNCTION__ + string(" failed:") + _e.getErrString(); \
      __RESULT__["errorMessage"] = errStr; \
      spdlog::error(errStr); \
      return __RESULT__; \
      } catch (const exception& _e) { \
      __RESULT__["status"]  = -1 * (10000 + __LINE__); \
      exception_ptr p = current_exception(); \
      auto errStr = __FUNCTION__ + string(" failed:") + p.__cxa_exception_type()->name() + ":" + _e.what(); \
      __RESULT__["errorMessage"] = errStr; \
      spdlog::error(errStr); \
      return __RESULT__; \
      } \
      catch (...) { \
      exception_ptr p = current_exception(); \
      auto errStr = __FUNCTION__ + string(" failed:") + p.__cxa_exception_type()->name(); \
      spdlog::error(errStr); \
      __RESULT__["errorMessage"] = errStr ; \
      spdlog::error(errStr); \
      return __RESULT__; \
      }

#define RETURN_SUCCESS(__RESULT__) \
    __RESULT__["status"] = 0; \
    __RESULT__["errorMessage"] = ""; \
    return __RESULT__;

#endif