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139 lines
3.3 KiB
C++
139 lines
3.3 KiB
C++
#ifndef __LOG__
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#define __LOG__
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#include <sstream>
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#include <string>
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#include <limits>
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#include <boost/thread/recursive_mutex.hpp>
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// VFALCO: TODO, fix this for Linux builds
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// Forward declaration
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/*
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namespace boost {
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namespace filesystem {
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class path;
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}
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}
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*/
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#include <boost/filesystem.hpp> // unfortunately needed to compile
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enum LogSeverity
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{
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lsINVALID = -1, // used to indicate an invalid severity
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lsTRACE = 0, // Very low-level progress information, details inside an operation
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lsDEBUG = 1, // Function-level progress information, operations
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lsINFO = 2, // Server-level progress information, major operations
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lsWARNING = 3, // Conditions that warrant human attention, may indicate a problem
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lsERROR = 4, // A condition that indicates a problem
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lsFATAL = 5 // A severe condition that indicates a server problem
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};
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//------------------------------------------------------------------------------
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// VFALCO: TODO, make this a nested class in Log
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class LogPartition
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{
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protected:
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static LogPartition* headLog;
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LogPartition* mNextLog;
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LogSeverity mMinSeverity;
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std::string mName;
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public:
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LogPartition(const char *name);
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bool doLog(LogSeverity s) const { return s >= mMinSeverity; }
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const std::string& getName() const { return mName; }
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static bool setSeverity(const std::string& partition, LogSeverity severity);
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static void setSeverity(LogSeverity severity);
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static std::vector< std::pair<std::string, std::string> > getSeverities();
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private:
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/** Retrieve file name from a log partition.
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*/
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template <class Key>
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inline static char const* getFileName ();
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/*
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{
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static_vfassert (false);
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}
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*/
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public:
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template <class Key>
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inline static LogPartition const& get ()
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{
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static LogPartition logPartition (getFileName <Key> ());
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return logPartition;
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}
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};
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#define SETUP_LOG(k) template <> char const* LogPartition::getFileName <k> () { return __FILE__; }
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//------------------------------------------------------------------------------
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class Log
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{
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private:
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Log(const Log&); // no implementation
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Log& operator=(const Log&); // no implementation
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protected:
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static boost::recursive_mutex sLock;
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static LogSeverity sMinSeverity;
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static std::ofstream* outStream;
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mutable std::ostringstream oss;
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LogSeverity mSeverity;
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std::string mPartitionName;
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static boost::filesystem::path *pathToLog;
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static uint32 logRotateCounter;
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public:
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Log(LogSeverity s) : mSeverity(s)
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{ ; }
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Log(LogSeverity s, const LogPartition& p) : mSeverity(s), mPartitionName(p.getName())
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{ ; }
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~Log();
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template<typename T> std::ostream& operator<<(const T& t) const
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{
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return oss << t;
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}
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std::ostringstream& ref(void) const
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{
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return oss;
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}
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static std::string severityToString(LogSeverity);
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static LogSeverity stringToSeverity(const std::string&);
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static LogSeverity getMinSeverity();
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static void setMinSeverity(LogSeverity, bool all);
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static void setLogFile(boost::filesystem::path const&);
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static std::string rotateLog(void);
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};
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// Manually test for whether we should log
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//
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#define ShouldLog(s, k) (LogPartition::get <k> ().doLog (s))
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// Write to the log at the given severity level
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//
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#define WriteLog(s, k) if (!ShouldLog (s, k)) do {} while (0); else Log (s, LogPartition::get <k> ())
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// Write to the log conditionally
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//
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#define CondLog(c, s, k) if (!ShouldLog (s, k) || !(c)) do {} while(0); else Log(s, LogPartition::get <k> ())
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#endif
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// vim:ts=4
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