Package org.drools.kiesession.audit

Class WorkingMemoryFileLogger

java.lang.Object

org.drools.kiesession.audit.WorkingMemoryLogger

org.drools.kiesession.audit.WorkingMemoryFileLogger

All Implemented Interfaces:

EventListener, KieBaseEventListener, ProcessEventListener, AgendaEventListener, RuleRuntimeEventListener, KieRuntimeLogger

Direct Known Subclasses:

ThreadedWorkingMemoryFileLogger

public class WorkingMemoryFileLogger
extends WorkingMemoryLogger
implements KieRuntimeLogger

A logger of events generated by a working memory. It stores its information in a file that can be specified. All the events logged are written to the file when the writeToDisk() method is invoked. The log will contain all the events logged serialized to XML using XStream. Every time a new logger is created, the old event log will be overwritten. TODO: make this class more scalable, for example - logging to several files if log becomes too large - automatically write updates to file at certain time intervals - ...

Field Summary

Fields

Modifier and Type	Field	Description
static final int	DEFAULT_MAX_EVENTS_IN_MEMORY
protected static final org.slf4j.Logger	logger
protected boolean	terminate

Constructor Summary

Constructors

Constructor	Description
WorkingMemoryFileLogger()
WorkingMemoryFileLogger(WorkingMemory workingMemory)	Creates a new WorkingMemoryFileLogger for the given working memory.
WorkingMemoryFileLogger(KieRuntimeEventManager session)

Method Summary

Modifier and Type	Method	Description
void	close()
void	logEventCreated(LogEvent logEvent)	This method is invoked every time a new log event is created.
void	readExternal(ObjectInput in)
void	setFileName(String fileName)	Sets the name of the file the events are logged in.
void	setMaxEventsInMemory(int maxEventsInMemory)	Sets the maximum number of log events that are allowed in memory.
void	setSplit(boolean split)
void	stop()
void	writeExternal(ObjectOutput out)
void	writeToDisk()	All events in the log are written to file.

Methods inherited from class org.drools.kiesession.audit.WorkingMemoryLogger

addFilter, afterFunctionRemoved, afterKieBaseLocked, afterKieBaseUnlocked, afterKiePackageAdded, afterKiePackageRemoved, afterMatchFired, afterNodeLeft, afterNodeTriggered, afterProcessAdded, afterProcessCompleted, afterProcessRemoved, afterProcessStarted, afterRuleAdded, afterRuleFlowGroupActivated, afterRuleFlowGroupDeactivated, afterRuleRemoved, afterVariableChanged, agendaGroupPopped, agendaGroupPushed, beforeFunctionRemoved, beforeKieBaseLocked, beforeKieBaseUnlocked, beforeKiePackageAdded, beforeKiePackageRemoved, beforeMatchFired, beforeNodeLeft, beforeNodeTriggered, beforeProcessAdded, beforeProcessCompleted, beforeProcessRemoved, beforeProcessStarted, beforeRuleAdded, beforeRuleFlowGroupActivated, beforeRuleFlowGroupDeactivated, beforeRuleRemoved, beforeVariableChanged, clearFilters, matchCancelled, matchCreated, objectDeleted, objectInserted, objectUpdated, removeFilter

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.kie.api.event.process.ProcessEventListener

afterSLAViolated, beforeSLAViolated, onError, onMessage, onMigration, onSignal

Field Details

logger

protected static final transient org.slf4j.Logger logger

DEFAULT_MAX_EVENTS_IN_MEMORY

public static final int DEFAULT_MAX_EVENTS_IN_MEMORY

See Also:

• Constant Field Values

terminate

protected boolean terminate

Constructor Details

WorkingMemoryFileLogger

public WorkingMemoryFileLogger()

WorkingMemoryFileLogger

public WorkingMemoryFileLogger(WorkingMemory workingMemory)

Creates a new WorkingMemoryFileLogger for the given working memory.

WorkingMemoryFileLogger

public WorkingMemoryFileLogger(KieRuntimeEventManager session)

Method Details

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
ClassNotFoundException

Overrides:

readExternal in class WorkingMemoryLogger

Throws:

IOException

ClassNotFoundException

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Overrides:

writeExternal in class WorkingMemoryLogger

Throws:

IOException

setFileName

public void setFileName(String fileName)

Sets the name of the file the events are logged in. No extensions should be given since .log is automatically appended to the file name. The default is an event.log file in the current working directory. This can be a path relative to the current working directory (e.g. "mydir/subDir/myLogFile"), or an absolute path (e.g. "C:/myLogFile").

Parameters:

fileName - The name of the file the events should be logged in.

writeToDisk

public void writeToDisk()

All events in the log are written to file. The log is automatically cleared afterwards.

setMaxEventsInMemory

public void setMaxEventsInMemory(int maxEventsInMemory)

Sets the maximum number of log events that are allowed in memory. If this number is reached, all events are written to file. The default is 1000.

Parameters:

maxEventsInMemory - The maximum number of events in memory.

logEventCreated

public void logEventCreated(LogEvent logEvent)

Description copied from class: WorkingMemoryLogger

This method is invoked every time a new log event is created. Subclasses should implement this method and store the event, like for example log to a file or database.

Specified by:

logEventCreated in class WorkingMemoryLogger

setSplit

public void setSplit(boolean split)

stop

public void stop()

close

public void close()

Specified by:

close in interface KieRuntimeLogger