EventLogger.hpp
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- /* Copyright (C) 2003 MySQL AB
- 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, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- #ifndef EVENTLOGGER_H
- #define EVENTLOGGER_H
- #include <Logger.hpp>
- #include <FileLogHandler.hpp>
- #include <GrepError.hpp>
- #include <kernel_types.h>
- #include <kernel/LogLevel.hpp>
- #include <signaldata/EventReport.hpp>
- class EventLoggerBase {
- public:
- virtual ~EventLoggerBase();
- /**
- * LogLevel settings
- */
- LogLevel m_logLevel;
-
- /**
- * This matrix defines which event should be printed when
- *
- * threshold - is in range [0-15]
- * severity - DEBUG to ALERT (Type of log message)
- */
- struct EventRepLogLevelMatrix {
- EventReport::EventType eventType;
- LogLevel::EventCategory eventCategory;
- Uint32 threshold;
- Logger::LoggerLevel severity;
- };
- static const EventRepLogLevelMatrix matrix[];
- static const Uint32 matrixSize;
- static int event_lookup(int eventType,
- LogLevel::EventCategory &cat,
- Uint32 &threshold,
- Logger::LoggerLevel &severity);
- };
- /**
- * The EventLogger is primarily used for logging NDB events
- * in the Management Server. It inherits all logging functionality of Logger.
- *
- * HOW TO USE
- *
- * 1) Create an EventLogger
- *
- * EventLogger myEventLogger = new EventLogger();
- *
- * 2) Log NDB events and other log messages.
- *
- * myEventLogger->info("Changing log levels.");
- *
- * EventReport* report = (EventReport*)&theSignalData[0];
- * myEventLogger->log(eventReport->getEventType(), theSignalData, aNodeId);
- *
- *
- * The following NDB event categories and log levels are enabled as default:
- *
- * EVENT-CATEGORY LOG-LEVEL
- *
- * Startup 4
- * Shutdown 1
- * Statistic 2
- * Checkpoint 5
- * NodeRestart 8
- * Connection 2
- * Error 15
- * Info 10
- *
- * @see Logger
- * @version #@ $Id: EventLogger.hpp,v 1.3 2003/09/01 10:15:52 innpeno Exp $
- */
- class EventLogger : public EventLoggerBase, public Logger
- {
- public:
- /**
- * Default constructor. Enables default log levels and
- * sets the log category to 'EventLogger'.
- */
- EventLogger();
- /**
- * Destructor.
- */
- virtual ~EventLogger();
- /**
- * Opens/creates the eventlog with the specified filename.
- *
- * @param aFileName the eventlog filename.
- * @param maxNoFiles the maximum no of archived eventlog files.
- * @param maxFileSize the maximum eventlog file size.
- * @param maxLogEntries the maximum number of log entries before
- * checking time to archive.
- * @return true if successful.
- */
- bool open(const char* logFileName,
- int maxNoFiles = FileLogHandler::MAX_NO_FILES,
- long int maxFileSize = FileLogHandler::MAX_FILE_SIZE,
- unsigned int maxLogEntries = FileLogHandler::MAX_LOG_ENTRIES);
- /**
- * Closes the eventlog.
- */
- void close();
- /**
- * Logs the NDB event.
- *
- * @param eventType the type of event.
- * @param theData the event data.
- * @param nodeId the node id of event origin.
- */
- virtual void log(int, const Uint32*, NodeId = 0,const class LogLevel * = 0);
-
- /**
- * Returns the event text for the specified event report type.
- *
- * @param type the event type.
- * @param theData the event data.
- * @param nodeId a node id.
- * @return the event report text.
- */
- static const char* getText(char * dst, size_t dst_len,
- int type,
- const Uint32* theData, NodeId nodeId = 0);
-
- /**
- * Returns the log level that is used to filter an event. The event will not
- * be logged unless its event category's log level is <= levelFilter.
- *
- * @return the log level filter that is used for all event categories.
- */
- int getFilterLevel() const;
- /**
- * Sets log level filter. The event will be logged if
- * the event category's log level is <= 'filterLevel'.
- *
- * @param level the log level to filter.
- */
- void setFilterLevel(int filterLevel);
- private:
- /** Prohibit */
- EventLogger(const EventLogger&);
- EventLogger operator = (const EventLogger&);
- bool operator == (const EventLogger&);
- Uint32 m_filterLevel;
- STATIC_CONST(MAX_TEXT_LENGTH = 256);
- char m_text[MAX_TEXT_LENGTH];
- };
- #endif