org.redisson

Class RedissonPermitExpirableSemaphore

java.lang.Object

org.redisson.RedissonObject

org.redisson.RedissonPermitExpirableSemaphore

All Implemented Interfaces:

RExpirable, RExpirableAsync, RObject, RObjectAsync, RPermitExpirableSemaphore, RPermitExpirableSemaphoreAsync

public class RedissonPermitExpirableSemaphore
extends RedissonObject
implements RPermitExpirableSemaphore

Author:

Nikita Koksharov

Field Summary

Fields inherited from class org.redisson.RedissonObject

codec, name

Constructor Summary

Constructors

Constructor and Description
RedissonPermitExpirableSemaphore(CommandAsyncExecutor commandExecutor, String name)

Method Summary

Modifier and Type	Method and Description
String	acquire() Acquires a permit and returns its id.
String	acquire(long leaseTime, TimeUnit timeUnit) Acquires a permit with defined leaseTime and return its id.
RFuture<String>	acquireAsync() Acquires a permit and returns its id.
RFuture<String>	acquireAsync(long leaseTime, TimeUnit timeUnit) Acquires a permit with defined leaseTime and return its id.
void	addPermits(int permits) Increases or decreases the number of available permits by defined value.
RFuture<Void>	addPermitsAsync(int permits) Increases or decreases the number of available permits by defined value.
int	availablePermits() Returns amount of available permits.
RFuture<Integer>	availablePermitsAsync() Returns amount of available permits.
boolean	clearExpire() Clear an expire timeout or expire date for object.
RFuture<Boolean>	clearExpireAsync() Clear an expire timeout or expire date for object in async mode.
protected RFuture<Boolean>	clearExpireAsync(String... keys)
RFuture<Boolean>	deleteAsync() Delete object in async mode
boolean	expire(long timeToLive, TimeUnit timeUnit) Set a timeout for object.
RFuture<Boolean>	expireAsync(long timeToLive, TimeUnit timeUnit) Set a timeout for object in async mode.
protected RFuture<Boolean>	expireAsync(long timeToLive, TimeUnit timeUnit, String... keys)
boolean	expireAt(Date timestamp) Set an expire date for object.
boolean	expireAt(long timestamp) Set an expire date for object.
RFuture<Boolean>	expireAtAsync(Date timestamp) Set an expire date for object in async mode.
RFuture<Boolean>	expireAtAsync(long timestamp) Set an expire date for object in async mode.
protected RFuture<Boolean>	expireAtAsync(long timestamp, String... keys)
protected String	generateId()
static String	getChannelName(String name)
void	release(String permitId) Releases a permit by its id.
RFuture<Void>	releaseAsync(String permitId) Releases a permit by its id.
long	remainTimeToLive() Remaining time to live of Redisson object that has a timeout
RFuture<Long>	remainTimeToLiveAsync() Remaining time to live of Redisson object that has a timeout
RFuture<Long>	sizeInMemoryAsync() Returns bytes amount used by object in Redis memory.
String	tryAcquire() Tries to acquire currently available permit and return its id.
String	tryAcquire(long waitTime, long ttl, TimeUnit unit) Tries to acquire currently available permit with defined leaseTime and return its id.
String	tryAcquire(long waitTime, TimeUnit unit) Tries to acquire currently available permit and return its id.
RFuture<String>	tryAcquireAsync() Tries to acquire currently available permit and return its id.
RFuture<String>	tryAcquireAsync(int permits, long timeoutDate)
RFuture<String>	tryAcquireAsync(long waitTime, long ttl, TimeUnit unit) Tries to acquire currently available permit with defined leaseTime and return its id.
RFuture<String>	tryAcquireAsync(long waitTime, TimeUnit unit) Tries to acquire currently available permit and return its id.
boolean	tryRelease(String permitId) Tries to release permit by its id.
RFuture<Boolean>	tryReleaseAsync(String permitId) Tries to release permit by its id.
boolean	trySetPermits(int permits) Tries to set number of permits.
RFuture<Boolean>	trySetPermitsAsync(int permits) Tries to set number of permits.
boolean	updateLeaseTime(String permitId, long leaseTime, TimeUnit unit) Overrides and updates lease time for defined permit id.
RFuture<Boolean>	updateLeaseTimeAsync(String permitId, long leaseTime, TimeUnit unit) Overrides and updates lease time for defined permit id.

Methods inherited from class org.redisson.RedissonObject

addListener, addListener, addListenerAsync, addListenerAsync, copy, copyAsync, delete, deleteAsync, dump, dumpAsync, encode, encode, encode, encode, encodeMapKey, encodeMapKeys, encodeMapValue, encodeMapValues, get, getCodec, getLockByMapKey, getLockByValue, getName, getName, isExists, isExistsAsync, migrate, migrateAsync, move, moveAsync, prefixName, removeListener, removeListenerAsync, removeListenersAsync, rename, renameAsync, renamenx, renamenxAsync, restore, restore, restoreAndReplace, restoreAndReplace, restoreAndReplaceAsync, restoreAndReplaceAsync, restoreAsync, restoreAsync, sizeInMemory, sizeInMemoryAsync, suffixName, toSeconds, toStream, touch, touchAsync, unlink, unlinkAsync

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.redisson.api.RExpirable

clearExpire, expire, expireAt, expireAt, remainTimeToLive

Methods inherited from interface org.redisson.api.RObject

addListener, copy, delete, dump, getCodec, getName, isExists, migrate, move, removeListener, rename, renamenx, restore, restore, restoreAndReplace, restoreAndReplace, sizeInMemory, touch, unlink

Methods inherited from interface org.redisson.api.RExpirableAsync

expireAtAsync, remainTimeToLiveAsync

Methods inherited from interface org.redisson.api.RObjectAsync

addListenerAsync, copyAsync, dumpAsync, isExistsAsync, migrateAsync, moveAsync, removeListenerAsync, renameAsync, renamenxAsync, restoreAndReplaceAsync, restoreAndReplaceAsync, restoreAsync, restoreAsync, touchAsync, unlinkAsync

Constructor Detail

RedissonPermitExpirableSemaphore

public RedissonPermitExpirableSemaphore(CommandAsyncExecutor commandExecutor,
                                        String name)

Method Detail

getChannelName

public static String getChannelName(String name)

acquire

public String acquire()
               throws InterruptedException

Description copied from interface: RPermitExpirableSemaphore

Acquires a permit and returns its id. Waits if necessary until a permit became available.

Specified by:

acquire in interface RPermitExpirableSemaphore

Returns:

permit id

Throws:

InterruptedException - if the current thread is interrupted

acquire

public String acquire(long leaseTime,
                      TimeUnit timeUnit)
               throws InterruptedException

Description copied from interface: RPermitExpirableSemaphore

Acquires a permit with defined leaseTime and return its id. Waits if necessary until a permit became available.

Specified by:

acquire in interface RPermitExpirableSemaphore

Parameters:

leaseTime - permit lease time

timeUnit - time unit

Returns:

permit id

Throws:

InterruptedException - if the current thread is interrupted

acquireAsync

public RFuture<String> acquireAsync(long leaseTime,
                                    TimeUnit timeUnit)

Description copied from interface: RPermitExpirableSemaphoreAsync

Acquires a permit with defined leaseTime and return its id. Waits if necessary until a permit became available.

Specified by:

acquireAsync in interface RPermitExpirableSemaphoreAsync

Parameters:

leaseTime - permit lease time

timeUnit - time unit

Returns:

permit id

acquireAsync

public RFuture<String> acquireAsync()

Description copied from interface: RPermitExpirableSemaphoreAsync

Acquires a permit and returns its id. Waits if necessary until a permit became available.

Specified by:

acquireAsync in interface RPermitExpirableSemaphoreAsync

Returns:

permit id

tryAcquire

public String tryAcquire()

Description copied from interface: RPermitExpirableSemaphore

Tries to acquire currently available permit and return its id.

Specified by:

tryAcquire in interface RPermitExpirableSemaphore

Returns:

permit id if a permit was acquired and null otherwise

tryAcquireAsync

public RFuture<String> tryAcquireAsync()

Description copied from interface: RPermitExpirableSemaphoreAsync

Tries to acquire currently available permit and return its id.

Specified by:

tryAcquireAsync in interface RPermitExpirableSemaphoreAsync

Returns:

permit id if a permit was acquired and null otherwise

generateId

protected String generateId()

tryAcquireAsync

public RFuture<String> tryAcquireAsync(int permits,
                                       long timeoutDate)

tryAcquireAsync

public RFuture<String> tryAcquireAsync(long waitTime,
                                       TimeUnit unit)

Description copied from interface: RPermitExpirableSemaphoreAsync

Tries to acquire currently available permit and return its id. Waits up to defined waitTime if necessary until a permit became available.

Specified by:

tryAcquireAsync in interface RPermitExpirableSemaphoreAsync

Parameters:

waitTime - the maximum time to wait

unit - the time unit

Returns:

permit id if a permit was acquired and null if the waiting time elapsed before a permit was acquired

tryAcquire

public String tryAcquire(long waitTime,
                         long ttl,
                         TimeUnit unit)
                  throws InterruptedException

Description copied from interface: RPermitExpirableSemaphore

Tries to acquire currently available permit with defined leaseTime and return its id. Waits up to defined waitTime if necessary until a permit became available.

Specified by:

tryAcquire in interface RPermitExpirableSemaphore

Parameters:

waitTime - the maximum time to wait

ttl - permit lease time, use -1 to make it permanent

unit - the time unit

Returns:

permit id if a permit was acquired and null if the waiting time elapsed before a permit was acquired

Throws:

InterruptedException - if the current thread is interrupted

tryAcquireAsync

public RFuture<String> tryAcquireAsync(long waitTime,
                                       long ttl,
                                       TimeUnit unit)

Description copied from interface: RPermitExpirableSemaphoreAsync

Tries to acquire currently available permit with defined leaseTime and return its id. Waits up to defined waitTime if necessary until a permit became available.

Specified by:

tryAcquireAsync in interface RPermitExpirableSemaphoreAsync

Parameters:

waitTime - the maximum time to wait

ttl - permit lease time, use -1 to make it permanent

unit - the time unit

Returns:

permit id if a permit was acquired and null if the waiting time elapsed before a permit was acquired

tryAcquire

public String tryAcquire(long waitTime,
                         TimeUnit unit)
                  throws InterruptedException

Description copied from interface: RPermitExpirableSemaphore

Tries to acquire currently available permit and return its id. Waits up to defined waitTime if necessary until a permit became available.

Specified by:

tryAcquire in interface RPermitExpirableSemaphore

Parameters:

waitTime - the maximum time to wait

unit - the time unit

Returns:

permit id if a permit was acquired and null if the waiting time elapsed before a permit was acquired

Throws:

InterruptedException - if the current thread is interrupted

release

public void release(String permitId)

Description copied from interface: RPermitExpirableSemaphore

Releases a permit by its id. Increases the number of available permits. Throws an exception if permit id doesn't exist or has already been released.

Specified by:

release in interface RPermitExpirableSemaphore

Parameters:

permitId - - permit id

tryRelease

public boolean tryRelease(String permitId)

Description copied from interface: RPermitExpirableSemaphore

Tries to release permit by its id.

Specified by:

tryRelease in interface RPermitExpirableSemaphore

Parameters:

permitId - permit id

Returns:

true if a permit has been released and false otherwise

tryReleaseAsync

public RFuture<Boolean> tryReleaseAsync(String permitId)

Description copied from interface: RPermitExpirableSemaphoreAsync

Tries to release permit by its id.

Specified by:

tryReleaseAsync in interface RPermitExpirableSemaphoreAsync

Parameters:

permitId - permit id

Returns:

true if a permit has been released and false otherwise

sizeInMemoryAsync

public RFuture<Long> sizeInMemoryAsync()

Description copied from interface: RObjectAsync

Returns bytes amount used by object in Redis memory.

Specified by:

sizeInMemoryAsync in interface RObjectAsync

Overrides:

sizeInMemoryAsync in class RedissonObject

Returns:

size in bytes

deleteAsync

public RFuture<Boolean> deleteAsync()

Description copied from interface: RObjectAsync

Delete object in async mode

Specified by:

deleteAsync in interface RObjectAsync

Overrides:

deleteAsync in class RedissonObject

Returns:

true if object was deleted false if not

expireAsync

public RFuture<Boolean> expireAsync(long timeToLive,
                                    TimeUnit timeUnit)

Description copied from interface: RExpirableAsync

Set a timeout for object in async mode. After the timeout has expired, the key will automatically be deleted.

Specified by:

expireAsync in interface RExpirableAsync

Parameters:

timeToLive - - timeout before object will be deleted

timeUnit - - timeout time unit

Returns:

true if the timeout was set and false if not

expireAtAsync

public RFuture<Boolean> expireAtAsync(long timestamp)

Description copied from interface: RExpirableAsync

Set an expire date for object in async mode. When expire date comes the key will automatically be deleted.

Specified by:

expireAtAsync in interface RExpirableAsync

Parameters:

timestamp - - expire date in milliseconds (Unix timestamp)

Returns:

true if the timeout was set and false if not

clearExpireAsync

public RFuture<Boolean> clearExpireAsync()

Description copied from interface: RExpirableAsync

Clear an expire timeout or expire date for object in async mode. Object will not be deleted.

Specified by:

clearExpireAsync in interface RExpirableAsync

Returns:

true if the timeout was cleared and false if not

releaseAsync

public RFuture<Void> releaseAsync(String permitId)

Description copied from interface: RPermitExpirableSemaphoreAsync

Releases a permit by its id. Increases the number of available permits. Throws an exception if permit id doesn't exist or has already been released.

Specified by:

releaseAsync in interface RPermitExpirableSemaphoreAsync

Parameters:

permitId - - permit id

Returns:

void

availablePermits

public int availablePermits()

Description copied from interface: RPermitExpirableSemaphore

Returns amount of available permits.

Specified by:

availablePermits in interface RPermitExpirableSemaphore

Returns:

number of permits

availablePermitsAsync

public RFuture<Integer> availablePermitsAsync()

Description copied from interface: RPermitExpirableSemaphoreAsync

Returns amount of available permits.

Specified by:

availablePermitsAsync in interface RPermitExpirableSemaphoreAsync

Returns:

number of permits

trySetPermits

public boolean trySetPermits(int permits)

Description copied from interface: RPermitExpirableSemaphore

Tries to set number of permits.

Specified by:

trySetPermits in interface RPermitExpirableSemaphore

Parameters:

permits - - number of permits

Returns:

true if permits has been set successfully, otherwise false.

trySetPermitsAsync

public RFuture<Boolean> trySetPermitsAsync(int permits)

Description copied from interface: RPermitExpirableSemaphoreAsync

Tries to set number of permits.

Specified by:

trySetPermitsAsync in interface RPermitExpirableSemaphoreAsync

Parameters:

permits - - number of permits

Returns:

true if permits has been set successfully, otherwise false.

addPermits

public void addPermits(int permits)

Description copied from interface: RPermitExpirableSemaphore

Increases or decreases the number of available permits by defined value.

Specified by:

addPermits in interface RPermitExpirableSemaphore

Parameters:

permits - amount of permits to add/remove

addPermitsAsync

public RFuture<Void> addPermitsAsync(int permits)

Description copied from interface: RPermitExpirableSemaphoreAsync

Increases or decreases the number of available permits by defined value.

Specified by:

addPermitsAsync in interface RPermitExpirableSemaphoreAsync

Parameters:

permits - amount of permits to add/remove

Returns:

void

updateLeaseTimeAsync

public RFuture<Boolean> updateLeaseTimeAsync(String permitId,
                                             long leaseTime,
                                             TimeUnit unit)

Description copied from interface: RPermitExpirableSemaphoreAsync

Overrides and updates lease time for defined permit id.

Specified by:

updateLeaseTimeAsync in interface RPermitExpirableSemaphoreAsync

Parameters:

permitId - permit id

leaseTime - permit lease time, use -1 to make it permanent

unit - the time unit

Returns:

true if permits has been updated successfully, otherwise false.

updateLeaseTime

public boolean updateLeaseTime(String permitId,
                               long leaseTime,
                               TimeUnit unit)

Description copied from interface: RPermitExpirableSemaphore

Overrides and updates lease time for defined permit id.

Specified by:

updateLeaseTime in interface RPermitExpirableSemaphore

Parameters:

permitId - permit id

leaseTime - permit lease time, use -1 to make it permanent

unit - the time unit

Returns:

true if permits has been updated successfully, otherwise false.

expire

public boolean expire(long timeToLive,
                      TimeUnit timeUnit)

Description copied from interface: RExpirable

Set a timeout for object. After the timeout has expired, the key will automatically be deleted.

Specified by:

expire in interface RExpirable

Parameters:

timeToLive - - timeout before object will be deleted

timeUnit - - timeout time unit

Returns:

true if the timeout was set and false if not

expireAt

public boolean expireAt(long timestamp)

Description copied from interface: RExpirable

Set an expire date for object. When expire date comes the key will automatically be deleted.

Specified by:

expireAt in interface RExpirable

Parameters:

timestamp - - expire date in milliseconds (Unix timestamp)

Returns:

true if the timeout was set and false if not

expireAt

public boolean expireAt(Date timestamp)

Description copied from interface: RExpirable

Set an expire date for object. When expire date comes the key will automatically be deleted.

Specified by:

expireAt in interface RExpirable

Parameters:

timestamp - - expire date

Returns:

true if the timeout was set and false if not

expireAtAsync

public RFuture<Boolean> expireAtAsync(Date timestamp)

Description copied from interface: RExpirableAsync

Set an expire date for object in async mode. When expire date comes the key will automatically be deleted.

Specified by:

expireAtAsync in interface RExpirableAsync

Parameters:

timestamp - - expire date

Returns:

true if the timeout was set and false if not

clearExpire

public boolean clearExpire()

Description copied from interface: RExpirable

Clear an expire timeout or expire date for object.

Specified by:

clearExpire in interface RExpirable

Returns:

true if timeout was removed false if object does not exist or does not have an associated timeout

remainTimeToLive

public long remainTimeToLive()

Description copied from interface: RExpirable

Remaining time to live of Redisson object that has a timeout

Specified by:

remainTimeToLive in interface RExpirable

Returns:

time in milliseconds -2 if the key does not exist. -1 if the key exists but has no associated expire.

remainTimeToLiveAsync

public RFuture<Long> remainTimeToLiveAsync()

Description copied from interface: RExpirableAsync

Remaining time to live of Redisson object that has a timeout

Specified by:

remainTimeToLiveAsync in interface RExpirableAsync

Returns:

time in milliseconds -2 if the key does not exist. -1 if the key exists but has no associated expire.

expireAsync

protected RFuture<Boolean> expireAsync(long timeToLive,
                                       TimeUnit timeUnit,
                                       String... keys)

expireAtAsync

protected RFuture<Boolean> expireAtAsync(long timestamp,
                                         String... keys)

clearExpireAsync

protected RFuture<Boolean> clearExpireAsync(String... keys)