Package it.dockins.dockerslaves

Class ProvisionQueueListener

java.lang.Object

hudson.model.queue.QueueListener

it.dockins.dockerslaves.ProvisionQueueListener

All Implemented Interfaces:

ExtensionPoint

@Extension
public class ProvisionQueueListener
extends QueueListener

Cloud API is designed to launch virtual machines, which is an heavy process, so relies on NodeProvisioner to determine when a new slave is required. Here we want the slave to start just as a job enter the build queue. As an alternative we listen the Queue for Jobs to get scheduled, and when label match immediately start a fresh new container executor with a unique label to enforce exclusive usage.

Nested Class Summary

Nested classes/interfaces inherited from interface hudson.ExtensionPoint

ExtensionPoint.LegacyInstancesAreScopedToHudson

Constructor Summary

Constructors

Constructor	Description
ProvisionQueueListener()

Method Summary

Modifier and Type	Method	Description
void	onEnterBuildable(Queue.BuildableItem item)
void	onLeft(Queue.LeftItem item)	If item is canceled, remove the executor we created for it.

Methods inherited from class hudson.model.queue.QueueListener

all, onEnterBlocked, onEnterWaiting, onLeaveBlocked, onLeaveBuildable, onLeaveWaiting

Methods inherited from class java.lang.Object

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

Constructor Details

ProvisionQueueListener

public ProvisionQueueListener()

Method Details

onEnterBuildable

public void onEnterBuildable(Queue.BuildableItem item)

Overrides:

onEnterBuildable in class QueueListener

onLeft

public void onLeft(Queue.LeftItem item)

If item is canceled, remove the executor we created for it.

Overrides:

onLeft in class QueueListener