com.google.gerrit.server.git

Class WorkQueue

java.lang.Object

com.google.gerrit.server.git.WorkQueue

public class WorkQueue
extends java.lang.Object

Delayed execution of tasks using a background thread pool.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	WorkQueue.CancelableRunnable Runnable needing to know it was canceled.
static interface	WorkQueue.CanceledWhileRunning Base interface handles the case when task was canceled before actual execution and in case it was started cancel method is not called yet the task itself will be destroyed anyway (it will result in resource opening errors).
class	WorkQueue.Executor An isolated queue.
static class	WorkQueue.Lifecycle
static class	WorkQueue.Module
static class	WorkQueue.ProjectTask<V> Same as Task class, but with a reference to ProjectRunnable, used to retrieve the project name from the operation queued
static class	WorkQueue.Task<V> A wrapper around a scheduled Runnable, as maintained in the queue.

Constructor Summary

Constructors

Constructor and Description
WorkQueue(IdGenerator idGenerator, int defaultThreadPoolSize, MetricMaker metrics) Constructor to allow binding the WorkQueue more explicitly in a vhost setup.

Method Summary

Modifier and Type	Method and Description
WorkQueue.Executor	createQueue(int poolsize, java.lang.String queueName) Create a new executor queue.
WorkQueue.Executor	createQueue(int poolsize, java.lang.String queueName, boolean withMetrics) Create a new executor queue, optionally with metrics.
WorkQueue.Executor	getDefaultQueue() Get the default work queue, for miscellaneous tasks.
WorkQueue.Executor	getExecutor(java.lang.String queueName)
WorkQueue.Task<?>	getTask(int id) Locate a task by its unique id, null if no task matches.
<T> java.util.List<T>	getTaskInfos(TaskInfoFactory<T> factory)
java.util.List<WorkQueue.Task<?>>	getTasks() Get all of the tasks currently scheduled in any work queue.

Methods inherited from class java.lang.Object

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

Constructor Detail

WorkQueue

public WorkQueue(IdGenerator idGenerator,
                 int defaultThreadPoolSize,
                 MetricMaker metrics)

Constructor to allow binding the WorkQueue more explicitly in a vhost setup.

Method Detail

getDefaultQueue

public WorkQueue.Executor getDefaultQueue()

Get the default work queue, for miscellaneous tasks.

createQueue

public WorkQueue.Executor createQueue(int poolsize,
                                      java.lang.String queueName)

Create a new executor queue.

Creates a new executor queue without associated metrics. This method is suitable for use by plugins.

If metrics are needed, use createQueue(int, String, boolean) instead.

Parameters:

poolsize - the size of the pool.

queueName - the name of the queue.

createQueue

public WorkQueue.Executor createQueue(int poolsize,
                                      java.lang.String queueName,
                                      boolean withMetrics)

Create a new executor queue, optionally with metrics.

Creates a new executor queue, optionally with associated metrics. Metrics should not be requested for queues created by plugins.

Parameters:

poolsize - the size of the pool.

queueName - the name of the queue.

withMetrics - whether to create metrics.

getTasks

public java.util.List<WorkQueue.Task<?>> getTasks()

Get all of the tasks currently scheduled in any work queue.

getTaskInfos

public <T> java.util.List<T> getTaskInfos(TaskInfoFactory<T> factory)

getTask

public WorkQueue.Task<?> getTask(int id)

Locate a task by its unique id, null if no task matches.

getExecutor

public WorkQueue.Executor getExecutor(java.lang.String queueName)