Core/Logging: Refactored appender creation to allow using logging without mysql dependency in tools (future task)

Conflicts:
	src/server/bnetserver/Main.cpp
	src/server/worldserver/Main.cpp

1 files changed, 20 insertions, 2 deletions

diff --git a/src/server/shared/Logging/Appender.h b/src/server/shared/Logging/Appender.h
index 73af351e41d..09ee6070050 100644
--- a/src/server/shared/Logging/Appender.h
+++ b/src/server/shared/Logging/Appender.h
@@ -22,6 +22,7 @@
 #include <string>
 #include <time.h>
 #include <type_traits>
+#include <utility>
 #include "Define.h"
 
 // Values assigned have their equivalent in enum ACE_Log_Priority
@@ -85,18 +86,19 @@ struct LogMessage
 class Appender
 {
     public:
-        Appender(uint8 _id, std::string const& name, AppenderType type = APPENDER_NONE, LogLevel level = LOG_LEVEL_DISABLED, AppenderFlags flags = APPENDER_FLAGS_NONE);
+        Appender(uint8 _id, std::string const& name, LogLevel level = LOG_LEVEL_DISABLED, AppenderFlags flags = APPENDER_FLAGS_NONE);
         virtual ~Appender();
 
         uint8 getId() const;
         std::string const& getName() const;
-        AppenderType getType() const;
+        virtual AppenderType getType() const = 0;
         LogLevel getLogLevel() const;
         AppenderFlags getFlags() const;
 
         void setLogLevel(LogLevel);
         void write(LogMessage* message);
         static const char* getLogLevelString(LogLevel level);
+        virtual void setRealmId(uint32 /*realmId*/) { }
 
     private:
         virtual void _write(LogMessage const* /*message*/) = 0;
@@ -110,4 +112,20 @@ class Appender
 
 typedef std::unordered_map<uint8, Appender*> AppenderMap;
 
+typedef std::vector<char const*> ExtraAppenderArgs;
+typedef Appender*(*AppenderCreatorFn)(uint8 id, std::string const& name, LogLevel level, AppenderFlags flags, ExtraAppenderArgs extraArgs);
+typedef std::unordered_map<uint8, AppenderCreatorFn> AppenderCreatorMap;
+
+template<class AppenderImpl>
+Appender* CreateAppender(uint8 id, std::string const& name, LogLevel level, AppenderFlags flags, ExtraAppenderArgs extraArgs)
+{
+    return new AppenderImpl(id, name, level, flags, std::forward<ExtraAppenderArgs>(extraArgs));
+}
+
+class InvalidAppenderArgsException : public std::length_error
+{
+public:
+    using std::length_error::length_error;
+};
+
 #endif