Package org.redisson

Class RedissonSpinLock

java.lang.Object
org.redisson.RedissonObject
org.redisson.RedissonBaseLock
org.redisson.RedissonSpinLock
All Implemented Interfaces:
Lock, RExpirable, RExpirableAsync, RLock, RLockAsync, RObject, RObjectAsync
public class RedissonSpinLock extends RedissonBaseLock
Distributed implementation of Lock Implements reentrant lock.
Lock will be removed automatically if client disconnects. This lock implementation doesn't use pub/sub mechanism. It can be used in large Redis clusters despite current naive pub/sub implementation.

Implements a non-fair locking so doesn't guarantees an acquire order.

Author:
Danila Varatyntsev

  • Field Details

    • internalLockLeaseTime

      protected long internalLockLeaseTime

    • backOff

      protected final LockOptions.BackOff backOff

  • Constructor Details

  • Method Details

    • lock

      public void lock()

    • lock

      public void lock(long leaseTime, TimeUnit unit)
      Description copied from interface: RLock
      Acquires the lock with defined leaseTime. Waits if necessary until lock became available. Lock will be released automatically after defined leaseTime interval.
      Parameters:
      leaseTime - the maximum time to hold the lock after it's acquisition, if it hasn't already been released by invoking unlock. If leaseTime is -1, hold the lock until explicitly unlocked.
      unit - the time unit

    • lockInterruptibly

      public void lockInterruptibly() throws InterruptedException
      Throws:
      InterruptedException

    • lockInterruptibly

      public void lockInterruptibly(long leaseTime, TimeUnit unit) throws InterruptedException
      Description copied from interface: RLock
      Acquires the lock with defined leaseTime. Waits if necessary until lock became available. Lock will be released automatically after defined leaseTime interval.
      Parameters:
      leaseTime - the maximum time to hold the lock after it's acquisition, if it hasn't already been released by invoking unlock. If leaseTime is -1, hold the lock until explicitly unlocked.
      unit - the time unit
      Throws:
      InterruptedException - - if the thread is interrupted

    • tryLock

      public boolean tryLock()

    • tryLock

      public boolean tryLock(long waitTime, long leaseTime, TimeUnit unit) throws InterruptedException
      Description copied from interface: RLock
      Tries to acquire the lock with defined leaseTime. Waits up to defined waitTime if necessary until the lock became available. Lock will be released automatically after defined leaseTime interval.
      Parameters:
      waitTime - the maximum time to acquire the lock
      leaseTime - lease time
      unit - time unit
      Returns:
      true if lock is successfully acquired, otherwise false if lock is already set.
      Throws:
      InterruptedException - - if the thread is interrupted

    • tryLock

      public boolean tryLock(long waitTime, TimeUnit unit) throws InterruptedException
      Throws:
      InterruptedException

    • cancelExpirationRenewal

      protected void cancelExpirationRenewal(Long threadId, Boolean unlockResult)
      Overrides:
      cancelExpirationRenewal in class RedissonBaseLock

    • forceUnlockAsync

      public RFuture<Boolean> forceUnlockAsync()
      Description copied from interface: RLockAsync
      Unlocks the lock independently of its state
      Returns:
      true if lock existed and now unlocked otherwise false

    • unlockInnerAsync

      protected RFuture<Boolean> unlockInnerAsync(long threadId, String requestId, int timeout)
      Specified by:
      unlockInnerAsync in class RedissonBaseLock

    • lockAsync

      public RFuture<Void> lockAsync(long leaseTime, TimeUnit unit, long currentThreadId)
      Description copied from interface: RLockAsync
      Acquires the lock with defined leaseTime and threadId. Waits if necessary until lock became available. Lock will be released automatically after defined leaseTime interval.
      Parameters:
      leaseTime - the maximum time to hold the lock after it's acquisition, if it hasn't already been released by invoking unlock. If leaseTime is -1, hold the lock until explicitly unlocked.
      unit - the time unit
      currentThreadId - id of thread
      Returns:
      void

    • tryLockAsync

      public RFuture<Boolean> tryLockAsync(long threadId)
      Description copied from interface: RLockAsync
      Tries to acquire the lock by thread with specified threadId.
      Parameters:
      threadId - id of thread
      Returns:
      true if lock acquired otherwise false

    • tryLockAsync

      public RFuture<Boolean> tryLockAsync(long waitTime, long leaseTime, TimeUnit unit, long currentThreadId)
      Description copied from interface: RLockAsync
      Tries to acquire the lock by thread with specified threadId and leaseTime. Waits up to defined waitTime if necessary until the lock became available. Lock will be released automatically after defined leaseTime interval.
      Parameters:
      waitTime - time interval to acquire lock
      leaseTime - time interval after which lock will be released automatically
      unit - the time unit of the waitTime and leaseTime arguments
      currentThreadId - id of thread
      Returns:
      true if lock acquired otherwise false

    • expire

      public boolean expire(long timeToLive, TimeUnit timeUnit)
      Description copied from interface: RExpirable
      Use RExpirable.expire(Duration) instead
      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

    • expireAsync

      public RFuture<Boolean> expireAsync(long timeToLive, TimeUnit timeUnit)
      Description copied from interface: RExpirableAsync
      Use RExpirableAsync.expireAsync(Duration) instead
      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

    • expireAt

      public boolean expireAt(long timestamp)
      Description copied from interface: RExpirable
      Use RExpirable.expire(Instant) instead
      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

    • expireAtAsync

      public RFuture<Boolean> expireAtAsync(long timestamp)
      Description copied from interface: RExpirableAsync
      Use RExpirableAsync.expireAsync(Instant) instead
      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

    • expire

      public boolean expire(Instant instant)
      Description copied from interface: RExpirable
      Sets an expiration date for this object. When expire date comes the key will automatically be deleted.
      Specified by:
      expire in interface RExpirable
      Parameters:
      instant - expire date
      Returns:
      true if the timeout was set and false if not

    • expireIfSet

      public boolean expireIfSet(Instant time)
      Description copied from interface: RExpirable
      Sets an expiration date for this object only if it has been already set. When expire date comes the object will automatically be deleted.

      Requires Redis 7.0.0 and higher.

      Specified by:
      expireIfSet in interface RExpirable
      Parameters:
      time - expire date
      Returns:
      true if the timeout was set and false if not

    • expireIfSetAsync

      public RFuture<Boolean> expireIfSetAsync(Instant time)
      Description copied from interface: RExpirableAsync
      Sets an expiration date for this object only if it has been already set. When expire date comes the object will automatically be deleted.

      Requires Redis 7.0.0 and higher.

      Specified by:
      expireIfSetAsync in interface RExpirableAsync
      Parameters:
      time - expire date
      Returns:
      true if the timeout was set and false if not

    • expireIfNotSet

      public boolean expireIfNotSet(Instant time)
      Description copied from interface: RExpirable
      Sets an expiration date for this object only if it hasn't been set before. When expire date comes the object will automatically be deleted.

      Requires Redis 7.0.0 and higher.

      Specified by:
      expireIfNotSet in interface RExpirable
      Parameters:
      time - expire date
      Returns:
      true if the timeout was set and false if not

    • expireIfNotSetAsync

      public RFuture<Boolean> expireIfNotSetAsync(Instant time)
      Description copied from interface: RExpirableAsync
      Sets an expiration date for this object only if it hasn't been set before. When expire date comes the object will automatically be deleted.

      Requires Redis 7.0.0 and higher.

      Specified by:
      expireIfNotSetAsync in interface RExpirableAsync
      Parameters:
      time - expire date
      Returns:
      true if the timeout was set and false if not

    • expireIfGreater

      public boolean expireIfGreater(Instant time)
      Description copied from interface: RExpirable
      Sets an expiration date for this object only if it's greater than expiration date set before. When expire date comes the object will automatically be deleted.

      Requires Redis 7.0.0 and higher.

      Specified by:
      expireIfGreater in interface RExpirable
      Parameters:
      time - expire date
      Returns:
      true if the timeout was set and false if not

    • expireIfGreaterAsync

      public RFuture<Boolean> expireIfGreaterAsync(Instant time)
      Description copied from interface: RExpirableAsync
      Sets an expiration date for this object only if it's greater than expiration date set before. When expire date comes the object will automatically be deleted.

      Requires Redis 7.0.0 and higher.

      Specified by:
      expireIfGreaterAsync in interface RExpirableAsync
      Parameters:
      time - expire date
      Returns:
      true if the timeout was set and false if not

    • expireIfLess

      public boolean expireIfLess(Instant time)
      Description copied from interface: RExpirable
      Sets an expiration date for this object only if it's less than expiration date set before. When expire date comes the object will automatically be deleted.

      Requires Redis 7.0.0 and higher.

      Specified by:
      expireIfLess in interface RExpirable
      Parameters:
      time - expire date
      Returns:
      true if the timeout was set and false if not

    • expireIfLessAsync

      public RFuture<Boolean> expireIfLessAsync(Instant time)
      Description copied from interface: RExpirableAsync
      Sets an expiration date for this object only if it's less than expiration date set before. When expire date comes the object will automatically be deleted.

      Requires Redis 7.0.0 and higher.

      Specified by:
      expireIfLessAsync in interface RExpirableAsync
      Parameters:
      time - expire date
      Returns:
      true if the timeout was set and false if not

    • expireAsync

      public RFuture<Boolean> expireAsync(Instant instant)
      Description copied from interface: RExpirableAsync
      Set an expire date for object. When expire date comes the key will automatically be deleted.
      Specified by:
      expireAsync in interface RExpirableAsync
      Parameters:
      instant - - expire date
      Returns:
      true if the timeout was set and false if not

    • expire

      public boolean expire(Duration duration)
      Description copied from interface: RExpirable
      Sets a timeout for this object. After the timeout has expired, the key will automatically be deleted.
      Specified by:
      expire in interface RExpirable
      Parameters:
      duration - timeout before object will be deleted
      Returns:
      true if the timeout was set and false if not

    • expireAsync

      public RFuture<Boolean> expireAsync(Duration duration)
      Description copied from interface: RExpirableAsync
      Set a timeout for object. After the timeout has expired, the key will automatically be deleted.
      Specified by:
      expireAsync in interface RExpirableAsync
      Parameters:
      duration - timeout before object will be deleted
      Returns:
      true if the timeout was set and false if not

    • expireAt

      public boolean expireAt(Date timestamp)
      Description copied from interface: RExpirable
      Use RExpirable.expire(Instant) instead
      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
      Use RExpirableAsync.expireAsync(Instant) instead
      Specified by:
      expireAtAsync in interface RExpirableAsync
      Parameters:
      timestamp - - expire date
      Returns:
      true if the timeout was set and false if not

    • expireIfSet

      public boolean expireIfSet(Duration duration)
      Description copied from interface: RExpirable
      Sets a timeout for this object only if it has been already set. After the timeout has expired, the key will automatically be deleted.

      Requires Redis 7.0.0 and higher.

      Specified by:
      expireIfSet in interface RExpirable
      Parameters:
      duration - timeout before object will be deleted
      Returns:
      true if the timeout was set and false if not

    • expireIfSetAsync

      public RFuture<Boolean> expireIfSetAsync(Duration duration)
      Description copied from interface: RExpirableAsync
      Sets a timeout for this object only if it has been already set. After the timeout has expired, the key will automatically be deleted.

      Requires Redis 7.0.0 and higher.

      Specified by:
      expireIfSetAsync in interface RExpirableAsync
      Parameters:
      duration - timeout before object will be deleted
      Returns:
      true if the timeout was set and false if not

    • expireIfNotSet

      public boolean expireIfNotSet(Duration duration)
      Description copied from interface: RExpirable
      Sets a timeout for this object only if it hasn't been set before. After the timeout has expired, the key will automatically be deleted.

      Requires Redis 7.0.0 and higher.

      Specified by:
      expireIfNotSet in interface RExpirable
      Parameters:
      duration - timeout before object will be deleted
      Returns:
      true if the timeout was set and false if not

    • expireIfNotSetAsync

      public RFuture<Boolean> expireIfNotSetAsync(Duration duration)
      Description copied from interface: RExpirableAsync
      Sets a timeout for this object only if it hasn't been set before. After the timeout has expired, the key will automatically be deleted.

      Requires Redis 7.0.0 and higher.

      Specified by:
      expireIfNotSetAsync in interface RExpirableAsync
      Parameters:
      duration - timeout before object will be deleted
      Returns:
      true if the timeout was set and false if not

    • expireIfGreater

      public boolean expireIfGreater(Duration duration)
      Description copied from interface: RExpirable
      Sets a timeout for this object only if it's greater than timeout set before. After the timeout has expired, the key will automatically be deleted.

      Requires Redis 7.0.0 and higher.

      Specified by:
      expireIfGreater in interface RExpirable
      Parameters:
      duration - timeout before object will be deleted
      Returns:
      true if the timeout was set and false if not

    • expireIfGreaterAsync

      public RFuture<Boolean> expireIfGreaterAsync(Duration duration)
      Description copied from interface: RExpirableAsync
      Sets a timeout for this object only if it's greater than timeout set before. After the timeout has expired, the key will automatically be deleted.

      Requires Redis 7.0.0 and higher.

      Specified by:
      expireIfGreaterAsync in interface RExpirableAsync
      Parameters:
      duration - timeout before object will be deleted
      Returns:
      true if the timeout was set and false if not

    • expireIfLess

      public boolean expireIfLess(Duration duration)
      Description copied from interface: RExpirable
      Sets a timeout for this object only if it's less than timeout set before. After the timeout has expired, the key will automatically be deleted.

      Requires Redis 7.0.0 and higher.

      Specified by:
      expireIfLess in interface RExpirable
      Parameters:
      duration - timeout before object will be deleted
      Returns:
      true if the timeout was set and false if not

    • expireIfLessAsync

      public RFuture<Boolean> expireIfLessAsync(Duration duration)
      Description copied from interface: RExpirableAsync
      Sets a timeout for this object only if it's less than timeout set before. After the timeout has expired, the key will automatically be deleted.

      Requires Redis 7.0.0 and higher.

      Specified by:
      expireIfLessAsync in interface RExpirableAsync
      Parameters:
      duration - timeout before object will be deleted
      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

    • 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

    • 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.

    • getExpireTime

      public long getExpireTime()
      Description copied from interface: RExpirable
      Expiration time of Redisson object that has a timeout

      Requires Redis 7.0.0 and higher.

      Specified by:
      getExpireTime in interface RExpirable
      Returns:
      expiration time

    • getExpireTimeAsync

      public RFuture<Long> getExpireTimeAsync()
      Description copied from interface: RExpirableAsync
      Expiration time of Redisson object that has a timeout

      Requires Redis 7.0.0 and higher.

      Specified by:
      getExpireTimeAsync in interface RExpirableAsync
      Returns:
      expiration time

    • expireAsync

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

    • expireAtAsync

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

    • clearExpireAsync

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