com.sleepycat.je.rep.elections

Class ElectionAgentThread

java.lang.Object

java.lang.Thread

com.sleepycat.je.utilint.StoppableThread

com.sleepycat.je.rep.elections.ElectionAgentThread

All Implemented Interfaces:

Runnable

Direct Known Subclasses:

Acceptor, Learner

public class ElectionAgentThread
extends StoppableThread

ElectionAgentThread is the base class for the election agent threads underlying the Acceptor and Learner agents.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

Thread.State, Thread.UncaughtExceptionHandler

Field Summary

Fields

Modifier and Type	Field and Description
protected BlockingQueue<DataChannel>	channelQueue
protected ReplicationFormatter	formatter
protected Logger	logger
protected Protocol	protocol

Fields inherited from class com.sleepycat.je.utilint.StoppableThread

envImpl

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ElectionAgentThread(EnvironmentImpl envImpl, Protocol protocol, String threadName)
protected	ElectionAgentThread(RepNode repNode, Protocol protocol, String threadName)

Method Summary

Modifier and Type	Method and Description
protected Logger	getLogger()
protected int	initiateSoftShutdown() Threads that use shutdownThread() must define this method.
void	shutdown() Shuts down the Agent.

Methods inherited from class com.sleepycat.je.utilint.StoppableThread

cleanup, getSavedShutdownException, getTotalCpuTime, getTotalUserTime, handleUncaughtException, isShutdown, saveShutdownException, shutdownDone, shutdownThread

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, run, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Field Detail

protocol

protected final Protocol protocol

logger

protected final Logger logger

formatter

protected final ReplicationFormatter formatter

channelQueue

protected final BlockingQueue<DataChannel> channelQueue

Constructor Detail

ElectionAgentThread

protected ElectionAgentThread(RepNode repNode,
                              Protocol protocol,
                              String threadName)

ElectionAgentThread

protected ElectionAgentThread(EnvironmentImpl envImpl,
                              Protocol protocol,
                              String threadName)

Method Detail

getLogger

protected Logger getLogger()

Specified by:

getLogger in class StoppableThread

Returns:

a logger to use when logging uncaught exceptions.

shutdown

public void shutdown()
              throws InterruptedException

Shuts down the Agent.

Throws:

InterruptedException

initiateSoftShutdown

protected int initiateSoftShutdown()

Description copied from class: StoppableThread

Threads that use shutdownThread() must define this method. It's invoked by shutdownThread as an attempt at a soft shutdown. This method makes provisions for this thread to exit on its own. The technique used to make the thread exit can vary based upon the nature of the service being provided by the thread. For example, the thread may be known to poll some shutdown flag on a periodic basis, or it may detect that a channel that it waits on has been closed by this method.

Overrides:

initiateSoftShutdown in class StoppableThread

Returns:

the amount of time in ms that the shutdownThread method will wait for the thread to exit. A -ve value means that the method will not wait. A zero value means it will wait indefinitely.