org.apache.zookeeper.server
Class PrepRequestProcessor

java.lang.Object
  java.lang.Thread
      org.apache.zookeeper.server.PrepRequestProcessor

All Implemented Interfaces:

java.lang.Runnable, RequestProcessor

public class PrepRequestProcessor
extends java.lang.Thread
implements RequestProcessor

This request processor is generally at the start of a RequestProcessor change. It sets up any transactions associated with requests that change the state of the system. It counts on ZooKeeperServer to update outstandingRequests, so that it can take into account transactions that are in the queue to be applied when generating a transaction.

Nested Class Summary

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

java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Nested classes/interfaces inherited from interface org.apache.zookeeper.server.RequestProcessor

RequestProcessor.RequestProcessorException

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

PrepRequestProcessor(ZooKeeperServer zks, RequestProcessor nextProcessor)

Method Summary

protected void	pRequest(Request request) This method will be called inside the ProcessRequestThread, which is a singleton, so there will be a single thread calling this code.
void	processRequest(Request request)
void	run()
static void	setFailCreate(boolean b) method for tests to set failCreate
void	shutdown()

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, 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

Constructor Detail

PrepRequestProcessor

public PrepRequestProcessor(ZooKeeperServer zks,
                            RequestProcessor nextProcessor)

Method Detail

setFailCreate

public static void setFailCreate(boolean b)

method for tests to set failCreate

Parameters:

b -

run

public void run()

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class java.lang.Thread

pRequest

protected void pRequest(Request request)
                 throws RequestProcessor.RequestProcessorException

This method will be called inside the ProcessRequestThread, which is a singleton, so there will be a single thread calling this code.

Parameters:

request -

Throws:

RequestProcessor.RequestProcessorException

processRequest

public void processRequest(Request request)

Specified by:

processRequest in interface RequestProcessor

shutdown

public void shutdown()

Specified by:

shutdown in interface RequestProcessor