bgp-log-handler.h

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#ifndef BGP_LOG_H_
#define BGP_LOG_H_
#include <mutex>
#include "serializable.h"

// log helper macro. some log taks a lot of resources to produce (e.g., print
// BgpPacket). This allow us to disable logging completely with macro and also
// force log level check.
#ifndef DISBALE_LOG_MACROS
#define LIBBGP_LOG(logger, level) if (logger->getLogLevel() >= level)
#else
#define LIBBGP_LOG(logger, level)
#endif

namespace libbgp {

class Serializable;

enum LogLevel {
    FATAL,
    ERROR,
    WARN,
    INFO,
    DEBUG
};

class BgpLogHandler {
public:
    BgpLogHandler();

    void log(LogLevel level, const char* format_str, ...);
    void log(LogLevel level, const Serializable &serializable);
    void setLogLevel(LogLevel level);
    LogLevel getLogLevel() const;

    virtual ~BgpLogHandler() {}
protected:

    virtual void logImpl(const char* str);

private:
    LogLevel level;
    std::mutex buf_mtx;
    char out_buffer[4096];
};

}

#endif // BGP_LOG_H_