the begginning

writeengine/shared/we_simplesyslog.h

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+/* Copyright (C) 2014 InfiniDB, Inc.
+
+   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; version 2 of
+   the License.
+
+   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, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA. */
+
+/*******************************************************************************
+* $Id: we_simplesyslog.h 4450 2013-01-21 14:13:24Z rdempsey $
+*
+*******************************************************************************/
+/** @file */
+
+#ifndef _WE_SIMPLESYSLOG_H_
+#define _WE_SIMPLESYSLOG_H_
+
+#include <boost/thread.hpp>
+
+#include "messagelog.h"
+#include "messageobj.h"
+
+#if defined(_MSC_VER) && defined(WRITEENGINE_DLLEXPORT)
+#define EXPORT __declspec(dllexport)
+#else
+#define EXPORT
+#endif
+
+/** Namespace WriteEngine */
+namespace WriteEngine
+{
+
+/**
+ * @brief SimpleSysLog class is a simple logger that only logs to syslog.
+ *
+ * Note that the instance() and setLoggingID() funtions are not thread-safe.
+ * They should be called once, upfront by the main thread to perform setup.
+ */
+class SimpleSysLog
+{
+public:
+   /**
+    * @brief Singleton accessor.
+    */
+    EXPORT static SimpleSysLog* instance();
+
+   /**
+    * @brief Modify the LoggingID to be used.  Mainly used to control the
+    * subsystem ID.
+    */
+    EXPORT void setLoggingID( const logging::LoggingID& loggingID );
+    
+   /**
+    * @brief Function that logs a syslog msg.
+    */
+    EXPORT void logMsg( const logging::Message::Args& msgArgs,
+                        logging::LOG_TYPE             logType,
+                        logging::Message::MessageID   msgId );
+
+private:
+    SimpleSysLog( );
+    SimpleSysLog( const SimpleSysLog& );
+    SimpleSysLog& operator= ( const SimpleSysLog& );
+
+    static SimpleSysLog* fSysLogger;
+    logging::LoggingID   fLoggingID;
+    boost::mutex         fWriteLockMutex; // logging mutex
+};
+
+#undef EXPORT
+
+} //end of namespace
+#endif // _WE_SIMPLESYSLOG_H_