MysqlServerLock

All Implemented Interfaces:

java.util.concurrent.locks.Lock
```
public class MysqlServerLock
 implements Lock
                    
```
Locks based on the Mysql IS_FREE_LOCK and GET_LOCK at mysql instance level.

Since:

2021-03-08

Author:

trydofor

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description

Field Summary

Fields
Modifier and Type	Field	Description

Constructor Summary

Constructors
Constructor	Description
`MysqlServerLock(JdbcTemplate jdbcTemplate, String lockName)`

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`void`	`lock()`	Tries to obtain a lock with a name given by the string str, using a timeout of timeout seconds.
`boolean`	`tryLock()`	Returns 1 if the lock was obtained successfully, 0 if the attempt timed out (for example, because another client has previously locked the name), or NULL if an error occurred (such as running out of memory or the thread was killed with mysqladmin kill).
`boolean`	`tryLock(long time, @NotNull() TimeUnit unit)`
`void`	`unlock()`	Returns 1 if the lock was released, 0 if the lock was not established by this thread (in which case the lock is not released), and NULL if the named lock did not exist.
`void`	`lockInterruptibly()`
`Condition`	`newCondition()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - MysqlServerLock
```
MysqlServerLock(JdbcTemplate jdbcTemplate, String lockName)
```
- Method Detail
  - lock
```
 void lock()
```
    Tries to obtain a lock with a name given by the string str, using a timeout of timeout seconds. A negative timeout value means infinite timeout. The lock is exclusive. While held by one session, other sessions cannot obtain a lock of the same name.
  - tryLock
```
 boolean tryLock()
```
    Returns 1 if the lock was obtained successfully, 0 if the attempt timed out (for example, because another client has previously locked the name), or NULL if an error occurred (such as running out of memory or the thread was killed with mysqladmin kill).
  - tryLock
```
 boolean tryLock(long time, @NotNull() TimeUnit unit)
```
  - unlock
```
 void unlock()
```
    Returns 1 if the lock was released, 0 if the lock was not established by this thread (in which case the lock is not released), and NULL if the named lock did not exist.
  - lockInterruptibly
```
 void lockInterruptibly()
```
  - newCondition
```
@NotNull() Condition newCondition()
```