/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

#ifndef THRIFT_TLOGGING_H
#define THRIFT_TLOGGING_H 1

#include "thrift/lib/cpp/thrift_config.h"
#include "thrift/lib/cpp/concurrency/Util.h"

#include <stdio.h>

/**
 * Contains utility macros for debugging and logging.
 *
 */

#ifdef THRIFT_HAVE_CLOCK_GETTIME
#include <sys/time.h>
#endif
#include <time.h>

#ifdef THRIFT_HAVE_STDINT_H
#include <stdint.h>
#endif

/**
 * T_GLOBAL_DEBUGGING_LEVEL = 0: all debugging turned off, debug macros undefined
 * T_GLOBAL_DEBUGGING_LEVEL = 1: all debugging turned on
 */
#ifndef T_GLOBAL_DEBUGGING_LEVEL
#define T_GLOBAL_DEBUGGING_LEVEL 0
#endif

/**
 * T_GLOBAL_LOGGING_LEVEL = 0: all logging turned off, logging macros undefined
 * T_GLOBAL_LOGGING_LEVEL = 1: all logging turned on
 */
#define T_GLOBAL_LOGGING_LEVEL   1

/**
 * Standard wrapper around fprintf what will prefix the file name and line
 * number to the line. Uses T_GLOBAL_DEBUGGING_LEVEL to control whether it is
 * turned on or off.
 *
 * @param format_string
 */
#define T_DEBUG(format_string,...) \
  T_DEBUG_L(0, format_string, ##__VA_ARGS__)

#define COMPUTE_TIME \
      int64_t nowMs = apache::thrift::concurrency::Util::currentTime(); \
      time_t nowSec = (time_t) (nowMs / 1000);                          \
      nowMs -= nowSec * 1000;                                           \
      int ms = (int)nowMs;                                              \
      char dbgtime[26]; \
      ctime_r(&nowSec, dbgtime); \
      dbgtime[24] = '\0';

/**
 * analogous to T_DEBUG but also prints the time
 *
 * @param string  format_string input: printf style format string
 */
#define T_DEBUG_T(format_string,...) \
  do { \
    if (T_GLOBAL_DEBUGGING_LEVEL > 0) { \
      COMPUTE_TIME \
      fprintf(stderr, "[%s,%d] [%s, %d ms] " format_string " \n", \
              __FILE__, __LINE__, dbgtime, ms, \
              ##__VA_ARGS__);                                   \
    } \
  } while(0)


/**
 * analogous to T_DEBUG but uses input level to determine whether or not the string
 * should be logged.
 *
 * @param int     level: specified debug level
 * @param string  format_string input: format string
 */
#define T_DEBUG_L(level, format_string, ...) \
  do { \
    if (T_GLOBAL_DEBUGGING_LEVEL > (level)) { \
      COMPUTE_TIME \
      fprintf(stderr, "[%s,%d] [%s, %d ms] " format_string " \n", \
              __FILE__, __LINE__, dbgtime, ms, ##__VA_ARGS__);           \
    } \
  } while (0)


/**
 * Explicit error logging. Prints time, file name and line number
 *
 * @param string  format_string input: printf style format string
 */
#define T_ERROR(format_string,...)                                      \
  {                                                                     \
    COMPUTE_TIME                                                        \
    fprintf(stderr,"[%s,%d] [%s, %d ms] ERROR: " format_string " \n", \
            __FILE__, __LINE__,dbgtime, ms,                             \
            ##__VA_ARGS__);         \
  }


/**
 * Analogous to T_ERROR, additionally aborting the process.
 * WARNING: macro calls abort(), ending program execution
 *
 * @param string  format_string input: printf style format string
 */
#define T_ERROR_ABORT(format_string,...)                                \
  {                                                                     \
    COMPUTE_TIME                                                        \
    fprintf(stderr,"[%s,%d] [%s, %d ms] ERROR: Going to abort " \
            format_string " \n",                                        \
            __FILE__, __LINE__,dbgtime, ms,                             \
            ##__VA_ARGS__);                                             \
    exit(1);                                                            \
  }


/**
 * Log input message
 *
 * @param string  format_string input: printf style format string
 */
#if T_GLOBAL_LOGGING_LEVEL > 0
  #define T_LOG_OPER(format_string,...)                                       \
    {                                                                         \
      if (T_GLOBAL_LOGGING_LEVEL > 0) {                                       \
        COMPUTE_TIME \
        fprintf(stderr,"[%s, %d ms] " format_string " \n", \
                dbgtime, ms, ##__VA_ARGS__);                      \
      }                                                                       \
    }
#else
  #define T_LOG_OPER(format_string,...)
#endif


/**
 * T_GLOBAL_DEBUG_VIRTUAL = 0 or unset: normal operation,
 *                                      virtual call debug messages disabled
 * T_GLOBAL_DEBUG_VIRTUAL = 1:          log a debug messages whenever an
 *                                      avoidable virtual call is made
 * T_GLOBAL_DEBUG_VIRTUAL = 2:          record detailed info that can be
 *                                      printed by calling
 *                                      apache::thrift::profile_print_info()
 */
#if T_GLOBAL_DEBUG_VIRTUAL > 1
  #define T_VIRTUAL_CALL()                                                \
    ::apache::thrift::profile_virtual_call(typeid(*this))
  #define T_GENERIC_PROTOCOL(template_class, generic_prot, specific_prot) \
    do {                                                                  \
      if (!(specific_prot)) {                                             \
        ::apache::thrift::profile_generic_protocol(                       \
            typeid(*template_class), typeid(*generic_prot));              \
      }                                                                   \
    } while (0)
#elif T_GLOBAL_DEBUG_VIRTUAL == 1
  #define T_VIRTUAL_CALL()                                                \
    fprintf(stderr,"[%s,%d] virtual call\n", __FILE__, __LINE__)
  #define T_GENERIC_PROTOCOL(template_class, generic_prot, specific_prot) \
    do {                                                                  \
      if (!(specific_prot)) {                                             \
        fprintf(stderr,                                                   \
                "[%s,%d] failed to cast to specific protocol type\n",     \
                __FILE__, __LINE__);                                      \
      }                                                                   \
    } while (0)
#else
  #define T_VIRTUAL_CALL()
  #define T_GENERIC_PROTOCOL(template_class, generic_prot, specific_prot)
#endif

#endif // #ifndef THRIFT_TLOGGING_H