ThreadLocker (OpenNMS 2022.1.1 API)

java.lang.Object
- org.opennms.test.ThreadLocker

```
public class ThreadLocker
extends Object
```
This class can be used to verify the number of threads that are calling a particular method. This is achieved by locking all of the threads that call MessageProducer#send and providing a callback (via a CompletableFuture) that is invoked once the desired number of threads is reached. If a larger number of threads than expected call MessageProducer#send, these are locked as well, and the number of these is provided by getNumExtraThreadsWaiting().

Author:

jwhite

Constructor Summary

Constructors
Constructor Description

ThreadLocker()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`getNumExtraThreadsWaiting()`
`void`	`park()`
`void`	`release()`
`CompletableFuture<Integer>`	`waitForThreads(int numThreads)`

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

Constructor Detail
- ThreadLocker
```
public ThreadLocker()
```

Method Detail

waitForThreads

public CompletableFuture<Integer> waitForThreads(int numThreads)

park
```
public void park()
```

release
```
public void release()
```

getNumExtraThreadsWaiting

public int getNumExtraThreadsWaiting()