logserviceprovider.h

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/*
 * Copyright (c) 2013-2014 - Adjacent Link LLC, Bridgewater, New Jersey
 * Copyright (c) 2008 - DRS CenGen, LLC, Columbia, Maryland
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in
 *   the documentation and/or other materials provided with the
 *   distribution.
 * * Neither the name of DRS CenGen, LLC nor the names of its
 *   contributors may be used to endorse or promote products derived
 *   from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef EMANELOGSERVICEPROVIDER_HEADER_
#define EMANELOGSERVICEPROVIDER_HEADER_

#include "emane/types.h"

#include <cstdarg>

namespace EMANE
{
  enum LogLevel
    {
      NOLOG_LEVEL = 0, 
      ABORT_LEVEL = 1, 
      ERROR_LEVEL = 2, 
      INFO_LEVEL =  3, 
      DEBUG_LEVEL = 4, 
    };

  class PlatformService;
  
  class LogServiceProvider
  {
  public:
    virtual ~LogServiceProvider(){}
    
    virtual void log(LogLevel level, const char *fmt, ...)
      __attribute__ ((format (printf, 3, 4))) = 0;


    virtual void vlog(LogLevel level, const char *fmt, va_list ap) = 0;

    
    virtual void log(LogLevel level, const Strings & strings) = 0;


    template <typename Function>
    void logfn(LogLevel level, Function fn);

    template <typename Function>
    void logfn(LogLevel level, Function fn,const char *fmt, va_list ap);

    template <typename Function>
    void logfn(LogLevel level, Function fn,const char *fmt, ...)
      __attribute__ ((format (printf, 4, 5)));

    enum {MAX_LOG_LENGTH = 1024};

  protected:
    LogServiceProvider(){}

    virtual bool isLogAllowed(LogLevel level) const = 0;

    virtual void log_i(LogLevel level, const Strings & strings) = 0;

  };
}

#ifdef VERBOSE_LOGGING

#define LOGGER_VERBOSE_LOGGING(logger,level,fmt,args...)  \
  (logger).log(level,fmt,## args)

#define LOGGER_VERBOSE_LOGGING_FN(logger,level,fn)  \
  (logger).logfn(level,fn)

#define LOGGER_VERBOSE_LOGGING_FN_VARGS(logger,level,fn,fmt,args...) \
  (logger).logfn(level,fn,fmt,## args)


#else

#define LOGGER_VERBOSE_LOGGING(logger,level,fmt,args...)

#define LOGGER_VERBOSE_LOGGING_FN(logger,level,fn)

#define LOGGER_VERBOSE_LOGGING_FN_VARGS(logger,level,fn,fmt,args...)

#endif

#define LOGGER_STANDARD_LOGGING(logger,level,fmt,args...) \
  (logger).log(level,fmt,## args)

#define LOGGER_STANDARD_LOGGING_FN(logger,level,fn) \
  (logger).logfn(level,fn)

#define LOGGER_STANDARD_LOGGING_FN_VARGS(logger,level,fn,fmt,args...) \
  (logger).logfn(level,fn,fmt,## args)

#include "emane/logserviceprovider.inl"

#endif //EMANELOGSERVICEPROVIDER_HEADER_