Utils/Logger: Complete route caching

[senf.git] / Utils / Logger / Target.hh

diff --git a/Utils/Logger/Target.hh b/Utils/Logger/Target.hh
index 6298800..56cf519 100644 (file)
--- a/Utils/Logger/Target.hh
+++ b/Utils/Logger/Target.hh
@@ -27,7 +27,11 @@
 #define HH_Target_ 1
 
 // Custom includes
+#include <set>
+#include <boost/date_time/posix_time/posix_time.hpp>
+#include <boost/utility.hpp>
 #include "../singleton.hh"
+#include "../mpl.hh"
 #include "StreamRegistry.hh"
 #include "AreaRegistry.hh"
 
@@ -37,6 +41,8 @@
 namespace senf {
 namespace log {
 
+    class TargetRegistry;
+
     /** \brief Logging target base class
 
         All enabled log messages are eventually routed to one or more logging targets. It is the
@@ -44,74 +50,137 @@ namespace log {
         to a file, to mail them to the administrator or whatever. To this end, the logging target is
         passed the log message and a complete set of logging parameters (\e stream, \e area and \e
         level).
+
+        \fixme optionally Integrate with Scheduler / ClockService to reduce number of gettimeofday()
+            calls.
       */
-    class Target
-        : public senf::singleton<Target>
+    class Target : private boost::noncopyable
     {
     public:
         ///////////////////////////////////////////////////////////////////////////
         // Types
 
+        enum action_t { ACCEPT, REJECT };
+
         ///////////////////////////////////////////////////////////////////////////
         ///\name Structors and default members
         ///@{
 
+        Target();
         virtual ~Target();
 
-        // default default constructor
-        // default copy constructor
-        // default copy assignment
-        // default destructor
+        ///@}
+
+        template <class Stream>
+        void route(action_t action=ACCEPT);
 
-        // no conversion constructors
+        template <class Stream, class Arg>
+        void route(action_t action=ACCEPT);
 
-        ///@}
+        template <class Stream, class Area, class Level>
+        void route(action_t action=ACCEPT);
+
+        void route(std::string const & stream, action_t action=ACCEPT);
+        void route(std::string const & stream, std::string const & area, action_t action=ACCEPT);
+        void route(std::string const & stream, unsigned level, action_t action=ACCEPT);
+        void route(std::string const & stream, std::string const & area, unsigned level, 
+                   action_t action=ACCEPT);
+
+        struct InvalidStreamException : public std::exception
+        { virtual char const * what() const throw() 
+                { return "senf::log::Target::InvalidStreamException"; } };
 
+        struct InvalidAreaException : public std::exception
+        { virtual char const * what() const throw() 
+                { return "senf::log::Target::InvalidAreaException"; } };
+        
     protected:
 
+        std::string timestamp();
+
     private:
 
         void route(detail::StreamBase const * stream, detail::AreaBase const * area, 
-                   unsigned level);
+                   unsigned level, action_t action);
         void unroute(detail::StreamBase const * stream, detail::AreaBase const * area, 
-                     unsigned level);
+                     unsigned level, action_t action);
 
-        void updateAreaCache(detail::AreaBase const & area, detail::StreamBase const * stream,
-                             unsigned level);
+        template <class Area>
+        void route(detail::StreamBase const * stream, detail::AreaBase const *, action_t action);
 
-        void write(detail::StreamBase const & stream, detail::AreaBase const & area, 
-                   unsigned level, std::string const & message);
+        template <class Level>
+        void route(detail::StreamBase const * stream, detail::LevelBase const *, action_t action);
         
-        virtual void v_write(std::string const & stream, std::string const & area, unsigned level,
+        void updateRoutingCache(detail::StreamBase const * stream, detail::AreaBase const * area);
+
+        void write(boost::posix_time::ptime timestamp, detail::StreamBase const & stream,
+                   detail::AreaBase const & area, unsigned level, std::string const & message);
+
+#   ifdef DOXYGEN
+    protected:
+#   endif
+
+        virtual void v_write(boost::posix_time::ptime, std::string const & stream, 
+                             std::string const & area, unsigned level, 
                              std::string const & message) = 0;
 
+#   ifdef DOXYGEN
+    private:
+#   endif
+
         struct RoutingEntry 
         {
             RoutingEntry(detail::StreamBase const * stream_, detail::AreaBase const * area_, 
-                         unsigned level_)
-                : stream(stream_), area(area_), level(level_) {}
-            RoutingEntry() 
-                : stream(0), area(0), level(0) {}
+                         unsigned level_, action_t action_);
+            RoutingEntry();
 
-            bool operator==(RoutingEntry const & other) 
-                { return stream == other.stream && area == other.area && level == other.level; }
+            bool operator==(RoutingEntry const & other);
 
             detail::StreamBase const * stream;
             detail::AreaBase const * area;
-            unsigned level;
+            unsigned level;            action_t action;
         };
 
         typedef std::vector<RoutingEntry> RIB;
 
         RIB rib_;
+        
+        friend class detail::AreaBase;
     };
 
+    /** \brief Target registry
+
+        The TargetRegistry keeps a record of all existing targets. 
+      */
+    class TargetRegistry
+        : public senf::singleton<TargetRegistry>
+    {
+    public:
+        using senf::singleton<TargetRegistry>::instance;
+
+        void write(detail::StreamBase const & stream, detail::AreaBase const & area,
+                   unsigned level, std::string msg);
+
+    private:
+        void registerTarget(Target * target);
+        void unregisterTarget(Target * target);
+
+        typedef std::set<Target *> Targets;
+        Targets targets_;
+        
+        friend class Target;
+    };
+
+
+    template <class Stream, class Area, class Level>
+    void write(std::string msg);
+
 }}
 
 ///////////////////////////////hh.e////////////////////////////////////////
 #include "Target.cci"
 //#include "Target.ct"
-//#include "Target.cti"
+#include "Target.cti"
 #endif
 
 \f