com.hazelcast.util

Class FutureUtil

java.lang.Object

com.hazelcast.util.FutureUtil

public final class FutureUtil
extends Object

This utility class contains convenience methods to work with multiple futures at the same time, e.g. waitWithDeadline(java.util.Collection, long, java.util.concurrent.TimeUnit, long, java.util.concurrent.TimeUnit)

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	FutureUtil.ExceptionHandler Internally used interface to define behavior of the FutureUtil methods when exceptions arise

Field Summary

Fields

Modifier and Type	Field and Description
static FutureUtil.ExceptionHandler	IGNORE_ALL_EXCEPT_LOG_MEMBER_LEFT Ignores all exceptions but still logs MemberLeftException per future and just tries to finish all of the given ones.
static FutureUtil.ExceptionHandler	IGNORE_ALL_EXCEPTIONS Ignores all exceptions
static FutureUtil.ExceptionHandler	RETHROW_EVERYTHING Just rethrows all exceptions
static FutureUtil.ExceptionHandler	RETHROW_EXECUTION_EXCEPTION This ExceptionHandler rethrows ExecutionExceptions and logs MemberLeftExceptions to the log.
static FutureUtil.ExceptionHandler	RETHROW_TRANSACTION_EXCEPTION Handler for transaction specific rethrown of exceptions.

Method Summary

Methods

Modifier and Type	Method and Description
static boolean	allDone(Collection<Future> futures) Check if all futures are done
static void	checkAllDone(Collection<Future> futures) Rethrow exeception of the fist future that completed with an exception
static List<Future>	getAllDone(Collection<Future> futures) Get all futures that are done
static FutureUtil.ExceptionHandler	logAllExceptions(ILogger logger, Level level) This ExceptionHandler rethrows ExecutionExceptions and logs MemberLeftExceptions to the log.
static FutureUtil.ExceptionHandler	logAllExceptions(ILogger logger, String message, Level level) This ExceptionHandler rethrows ExecutionExceptions and logs MemberLeftExceptions to the log.
static FutureUtil.ExceptionHandler	logAllExceptions(Level level) This ExceptionHandler rethrows ExecutionExceptions and logs MemberLeftExceptions to the log.
static FutureUtil.ExceptionHandler	logAllExceptions(String message, Level level) This ExceptionHandler rethrows ExecutionExceptions and logs MemberLeftExceptions to the log.
static <V> Collection<V>	returnWithDeadline(Collection<Future<V>> futures, long timeout, TimeUnit timeUnit)
static <V> Collection<V>	returnWithDeadline(Collection<Future<V>> futures, long timeout, TimeUnit timeUnit, FutureUtil.ExceptionHandler exceptionHandler)
static <V> Collection<V>	returnWithDeadline(Collection<Future<V>> futures, long overallTimeout, TimeUnit overallTimeUnit, long perFutureTimeout, TimeUnit perFutureTimeUnit)
static <V> Collection<V>	returnWithDeadline(Collection<Future<V>> futures, long overallTimeout, TimeUnit overallTimeUnit, long perFutureTimeout, TimeUnit perFutureTimeUnit, FutureUtil.ExceptionHandler exceptionHandler)
static void	waitWithDeadline(Collection<Future> futures, long timeout, TimeUnit timeUnit)
static void	waitWithDeadline(Collection<Future> futures, long timeout, TimeUnit timeUnit, FutureUtil.ExceptionHandler exceptionHandler)
static void	waitWithDeadline(Collection<Future> futures, long overallTimeout, TimeUnit overallTimeUnit, long perFutureTimeout, TimeUnit perFutureTimeUnit)
static void	waitWithDeadline(Collection<Future> futures, long overallTimeout, TimeUnit overallTimeUnit, long perFutureTimeout, TimeUnit perFutureTimeUnit, FutureUtil.ExceptionHandler exceptionHandler)

Methods inherited from class java.lang.Object

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

Field Detail

RETHROW_EVERYTHING

public static final FutureUtil.ExceptionHandler RETHROW_EVERYTHING

Just rethrows all exceptions

IGNORE_ALL_EXCEPTIONS

public static final FutureUtil.ExceptionHandler IGNORE_ALL_EXCEPTIONS

Ignores all exceptions

IGNORE_ALL_EXCEPT_LOG_MEMBER_LEFT

public static final FutureUtil.ExceptionHandler IGNORE_ALL_EXCEPT_LOG_MEMBER_LEFT

Ignores all exceptions but still logs MemberLeftException per future and just tries to finish all of the given ones. This is the default behavior if nothing else is given.

RETHROW_EXECUTION_EXCEPTION

public static final FutureUtil.ExceptionHandler RETHROW_EXECUTION_EXCEPTION

This ExceptionHandler rethrows ExecutionExceptions and logs MemberLeftExceptions to the log.

RETHROW_TRANSACTION_EXCEPTION

public static final FutureUtil.ExceptionHandler RETHROW_TRANSACTION_EXCEPTION

Handler for transaction specific rethrown of exceptions.

Method Detail

logAllExceptions

@PrivateApi
public static FutureUtil.ExceptionHandler logAllExceptions(ILogger logger,
                                                      String message,
                                                      Level level)

This ExceptionHandler rethrows ExecutionExceptions and logs MemberLeftExceptions to the log.

Parameters:

logger - the ILogger instance to be used for logging

message - the log message to appear in the logs before the stacktrace

level - the log level to be used for logging

logAllExceptions

@PrivateApi
public static FutureUtil.ExceptionHandler logAllExceptions(String message,
                                                      Level level)

This ExceptionHandler rethrows ExecutionExceptions and logs MemberLeftExceptions to the log.

Parameters:

message - the log message to appear in the logs before the stacktrace

level - the log level to be used for logging

logAllExceptions

@PrivateApi
public static FutureUtil.ExceptionHandler logAllExceptions(ILogger logger,
                                                      Level level)

This ExceptionHandler rethrows ExecutionExceptions and logs MemberLeftExceptions to the log.

Parameters:

logger - the ILogger instance to be used for logging

level - the log level to be used for logging

logAllExceptions

@PrivateApi
public static FutureUtil.ExceptionHandler logAllExceptions(Level level)

This ExceptionHandler rethrows ExecutionExceptions and logs MemberLeftExceptions to the log.

Parameters:

level - the log level to be used for logging

returnWithDeadline

@PrivateApi
public static <V> Collection<V> returnWithDeadline(Collection<Future<V>> futures,
                                              long timeout,
                                              TimeUnit timeUnit)

returnWithDeadline

@PrivateApi
public static <V> Collection<V> returnWithDeadline(Collection<Future<V>> futures,
                                              long timeout,
                                              TimeUnit timeUnit,
                                              FutureUtil.ExceptionHandler exceptionHandler)

returnWithDeadline

@PrivateApi
public static <V> Collection<V> returnWithDeadline(Collection<Future<V>> futures,
                                              long overallTimeout,
                                              TimeUnit overallTimeUnit,
                                              long perFutureTimeout,
                                              TimeUnit perFutureTimeUnit)

returnWithDeadline

@PrivateApi
public static <V> Collection<V> returnWithDeadline(Collection<Future<V>> futures,
                                              long overallTimeout,
                                              TimeUnit overallTimeUnit,
                                              long perFutureTimeout,
                                              TimeUnit perFutureTimeUnit,
                                              FutureUtil.ExceptionHandler exceptionHandler)

waitWithDeadline

@PrivateApi
public static void waitWithDeadline(Collection<Future> futures,
                               long timeout,
                               TimeUnit timeUnit)

waitWithDeadline

@PrivateApi
public static void waitWithDeadline(Collection<Future> futures,
                               long timeout,
                               TimeUnit timeUnit,
                               FutureUtil.ExceptionHandler exceptionHandler)

waitWithDeadline

@PrivateApi
public static void waitWithDeadline(Collection<Future> futures,
                               long overallTimeout,
                               TimeUnit overallTimeUnit,
                               long perFutureTimeout,
                               TimeUnit perFutureTimeUnit)

waitWithDeadline

@PrivateApi
public static void waitWithDeadline(Collection<Future> futures,
                               long overallTimeout,
                               TimeUnit overallTimeUnit,
                               long perFutureTimeout,
                               TimeUnit perFutureTimeUnit,
                               FutureUtil.ExceptionHandler exceptionHandler)

allDone

public static boolean allDone(Collection<Future> futures)

Check if all futures are done

Parameters:

futures -

Returns:

true if all futures are done. false otherwise

checkAllDone

public static void checkAllDone(Collection<Future> futures)
                         throws Exception

Rethrow exeception of the fist future that completed with an exception

Parameters:

futures -

Throws:

Exception

getAllDone

public static List<Future> getAllDone(Collection<Future> futures)

Get all futures that are done

Parameters:

futures -

Returns:

list of completed futures