1 files changed, 134 insertions, 0 deletions
diff --git a/src/common/Logging/Appender.h b/src/common/Logging/Appender.h
new file mode 100644
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+++ b/src/common/Logging/Appender.h
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+/*
+ * Copyright (C) 2008-2015 TrinityCore <http://www.trinitycore.org/>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef APPENDER_H
+#define APPENDER_H
+
+#include <unordered_map>
+#include <stdexcept>
+#include <string>
+#include <time.h>
+#include <type_traits>
+#include <vector>
+#include <utility>
+#include "Define.h"
+
+// Values assigned have their equivalent in enum ACE_Log_Priority
+enum LogLevel
+{
+    LOG_LEVEL_DISABLED                           = 0,
+    LOG_LEVEL_TRACE                              = 1,
+    LOG_LEVEL_DEBUG                              = 2,
+    LOG_LEVEL_INFO                               = 3,
+    LOG_LEVEL_WARN                               = 4,
+    LOG_LEVEL_ERROR                              = 5,
+    LOG_LEVEL_FATAL                              = 6
+};
+
+const uint8 MaxLogLevels = 6;
+
+enum AppenderType
+{
+    APPENDER_NONE,
+    APPENDER_CONSOLE,
+    APPENDER_FILE,
+    APPENDER_DB
+};
+
+enum AppenderFlags
+{
+    APPENDER_FLAGS_NONE                          = 0x00,
+    APPENDER_FLAGS_PREFIX_TIMESTAMP              = 0x01,
+    APPENDER_FLAGS_PREFIX_LOGLEVEL               = 0x02,
+    APPENDER_FLAGS_PREFIX_LOGFILTERTYPE          = 0x04,
+    APPENDER_FLAGS_USE_TIMESTAMP                 = 0x08, // only used by FileAppender
+    APPENDER_FLAGS_MAKE_FILE_BACKUP              = 0x10  // only used by FileAppender
+};
+
+struct LogMessage
+{
+    LogMessage(LogLevel _level, std::string const& _type, std::string&& _text)
+        : level(_level), type(_type), text(std::forward<std::string>(_text)), mtime(time(NULL))
+    { }
+
+    LogMessage(LogMessage const& /*other*/) = delete;
+    LogMessage& operator=(LogMessage const& /*other*/) = delete;
+
+    static std::string getTimeStr(time_t time);
+    std::string getTimeStr();
+
+    LogLevel const level;
+    std::string const type;
+    std::string const text;
+    std::string prefix;
+    std::string param1;
+    time_t mtime;
+
+    ///@ Returns size of the log message content in bytes
+    uint32 Size() const
+    {
+        return static_cast<uint32>(prefix.size() + text.size());
+    }
+};
+
+class Appender
+{
+    public:
+        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;
+        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;
+
+        uint8 id;
+        std::string name;
+        LogLevel level;
+        AppenderFlags flags;
+};
+
+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;
+
+    explicit InvalidAppenderArgsException(std::string const& message) : length_error(message) { }
+};
+
+#endif