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/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
#ifndef LOGGER_H
#define LOGGER_H
#include "base/atomic.hpp"
#include "base/i2-base.hpp"
#include "base/logger-ti.hpp"
#include <set>
#include <sstream>
namespace icinga
{
/**
* Log severity.
*
* @ingroup base
*/
enum LogSeverity
{
LogDebug,
LogNotice,
LogInformation,
LogWarning,
LogCritical,
// Just for internal comparision
LogNothing,
};
/**
* A log entry.
*
* @ingroup base
*/
struct LogEntry {
double Timestamp; /**< The timestamp when this log entry was created. */
LogSeverity Severity; /**< The severity of this log entry. */
String Facility; /**< The facility this log entry belongs to. */
String Message; /**< The log entry's message. */
};
/**
* A log provider.
*
* @ingroup base
*/
class Logger : public ObjectImpl<Logger>
{
public:
DECLARE_OBJECT(Logger);
static String SeverityToString(LogSeverity severity);
static LogSeverity StringToSeverity(const String& severity);
LogSeverity GetMinSeverity() const;
/**
* Processes the log entry and writes it to the log that is
* represented by this ILogger object.
*
* @param entry The log entry that is to be processed.
*/
virtual void ProcessLogEntry(const LogEntry& entry) = 0;
virtual void Flush() = 0;
static std::set<Logger::Ptr> GetLoggers();
static void DisableConsoleLog();
static void EnableConsoleLog();
static bool IsConsoleLogEnabled();
static void DisableEarlyLogging();
static bool IsEarlyLoggingEnabled();
static void DisableTimestamp();
static void EnableTimestamp();
static bool IsTimestampEnabled();
static void SetConsoleLogSeverity(LogSeverity logSeverity);
static LogSeverity GetConsoleLogSeverity();
static inline
LogSeverity GetMinLogSeverity()
{
return m_MinLogSeverity.load();
}
void SetSeverity(const String& value, bool suppress_events = false, const Value& cookie = Empty) override;
void ValidateSeverity(const Lazy<String>& lvalue, const ValidationUtils& utils) final;
protected:
void Start(bool runtimeCreated) override;
void Stop(bool runtimeRemoved) override;
private:
static void UpdateMinLogSeverity();
static std::mutex m_Mutex;
static std::set<Logger::Ptr> m_Loggers;
static bool m_ConsoleLogEnabled;
static std::atomic<bool> m_EarlyLoggingEnabled;
static bool m_TimestampEnabled;
static LogSeverity m_ConsoleLogSeverity;
static std::mutex m_UpdateMinLogSeverityMutex;
static Atomic<LogSeverity> m_MinLogSeverity;
};
class Log
{
public:
Log() = delete;
Log(const Log& other) = delete;
Log& operator=(const Log& rhs) = delete;
Log(LogSeverity severity, String facility, const String& message);
Log(LogSeverity severity, String facility);
~Log();
template<typename T>
Log& operator<<(const T& val)
{
if (!m_IsNoOp) {
m_Buffer << val;
}
return *this;
}
Log& operator<<(const char *val);
private:
LogSeverity m_Severity;
String m_Facility;
std::ostringstream m_Buffer;
bool m_IsNoOp;
};
extern template Log& Log::operator<<(const Value&);
extern template Log& Log::operator<<(const String&);
extern template Log& Log::operator<<(const std::string&);
extern template Log& Log::operator<<(const bool&);
extern template Log& Log::operator<<(const unsigned int&);
extern template Log& Log::operator<<(const int&);
extern template Log& Log::operator<<(const unsigned long&);
extern template Log& Log::operator<<(const long&);
extern template Log& Log::operator<<(const double&);
}
#endif /* LOGGER_H */
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