Package org.apache.zookeeper.server

Class PrepRequestProcessor

java.lang.Object

java.lang.Thread

org.apache.zookeeper.server.ZooKeeperThread

org.apache.zookeeper.server.ZooKeeperCriticalThread

org.apache.zookeeper.server.PrepRequestProcessor

All Implemented Interfaces:

Runnable, RequestProcessor

public class PrepRequestProcessor
extends ZooKeeperCriticalThread
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

Modifier and Type	Class	Description
static class	PrepRequestProcessor.DigestOpCode

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

Thread.State, 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

Constructors

Constructor	Description
PrepRequestProcessor(ZooKeeperServer zks, RequestProcessor nextProcessor)

Method Summary

Modifier and Type	Method	Description
protected void	addChangeRecord(org.apache.zookeeper.server.ZooKeeperServer.ChangeRecord c)
static List<ACL>	fixupACL(String path, List<Id> authInfo, List<ACL> acls)	This method checks out the acl making sure it isn't null or empty, it has valid schemes and ids, and expanding any relative ids that depend on the requestor's authentication information.
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.
protected void	pRequest2Txn(int type, long zxid, Request request, Record record)	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 org.apache.zookeeper.server.ZooKeeperCriticalThread

handleException

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 Runnable

Overrides:

run in class Thread

addChangeRecord

protected void addChangeRecord(org.apache.zookeeper.server.ZooKeeperServer.ChangeRecord c)

pRequest2Txn

protected void pRequest2Txn(int type,
                            long zxid,
                            Request request,
                            Record record)
                     throws KeeperException,
                            IOException,
                            RequestProcessor.RequestProcessorException

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

Throws:

KeeperException

IOException

RequestProcessor.RequestProcessorException

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

fixupACL

public static List<ACL> fixupACL(String path,
                                 List<Id> authInfo,
                                 List<ACL> acls)
                          throws KeeperException.InvalidACLException

This method checks out the acl making sure it isn't null or empty, it has valid schemes and ids, and expanding any relative ids that depend on the requestor's authentication information.

Parameters:

authInfo - list of ACL IDs associated with the client connection

acls - list of ACLs being assigned to the node (create or setACL operation)

Returns:

verified and expanded ACLs

Throws:

KeeperException.InvalidACLException

processRequest

public void processRequest(Request request)

Specified by:

processRequest in interface RequestProcessor

shutdown

public void shutdown()

Specified by:

shutdown in interface RequestProcessor