Package com.atlassian.bitbucket.concurrent

Interface PullRequestLock

public interface PullRequestLock

A reusable component for locking a pull request while an operation is performed.

Separate instances of this interface are not related. Locking a pull request in one instance does not lock it in any other. The intention is to allow grouping operations that perform similar processing, or rely on the same pull request data, so that only one is running on a given pull request at a time, using multiple locks when different bands of processing can be performed concurrently.

Note: When used by plugin developers, no instance of this lock can ever prevent the host application from performing any of its own processing on any aspect of a pull request.

See Also:

• RepositoryLock
• UncheckedOperation

Method Summary

Modifier and Type	Method	Description
<T, E extends Exception> T	withLock(int repositoryId, long pullRequestId, Operation<T,E> operation)	Performs the provided operation while holding a lock on the specified pull request.
<T, E extends Exception> T	withLock(PullRequest pullRequest, Operation<T,E> operation)	Performs the provided operation while holding a lock on the specified pull request.

Method Details

withLock

<T,
E extends Exception> T withLock(int repositoryId,
 long pullRequestId,
 @Nonnull
 Operation<T,E> operation)
                             throws E

Performs the provided operation while holding a lock on the specified pull request.

Note: Locking a pull request by ID or by PullRequest instance acquires the same underlying lock.

Type Parameters:

T - the return type of the perform operation

E - the type of Throwable that can be thrown from perform.

Parameters:

repositoryId - the ID of the repository to lock

pullRequestId - the ID of the pull request to lock in the specified repository

operation - the operation to perform while holding the lock

Returns:

the result of performing the operation

Throws:

E - if the operation fails

withLock

<T,
E extends Exception> T withLock(@Nonnull
 PullRequest pullRequest,
 @Nonnull
 Operation<T,E> operation)
                             throws E

Performs the provided operation while holding a lock on the specified pull request.

Note: Locking a pull request by ID or by PullRequest instance acquires the same underlying lock.

Type Parameters:

T - the return type of the perform operation

E - the type of Throwable that can be thrown from perform.

Parameters:

pullRequest - the pull request to lock

operation - the operation to perform while holding the lock

Returns:

the result of performing the operation

Throws:

E - if the operation fails