Package com.nirima.jenkins.plugins.docker.strategy

Class DockerOnceRetentionStrategy

java.lang.Object

hudson.model.AbstractDescribableImpl<RetentionStrategy<?>>

hudson.slaves.RetentionStrategy<DockerComputer>

com.nirima.jenkins.plugins.docker.strategy.DockerOnceRetentionStrategy

All Implemented Interfaces:

ExtensionPoint, Describable<RetentionStrategy<?>>, ExecutorListener

public class DockerOnceRetentionStrategy
extends RetentionStrategy<DockerComputer>
implements ExecutorListener

Retention strategy that allows our docker agents to run only a single build before disconnecting.

• A Queue.FlyweightTask is considered "trivial" and does not trigger termination.
• A OneOffExecutor (typically used by a Queue.FlyweightTask) is considered "trivial" and does not trigger termination.
• A ContinuableExecutable where ContinuableExecutable.willContinue() is true does not trigger termination.
• ...but any other workload will trigger termination once the node is idle.

Inspired by the logic in OnceRetentionStrategy (1.34) but with the kill/don't-kill decision made when we accept a task (not when we complete it) and termination itself delayed until we've done all ongoing work.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	DockerOnceRetentionStrategy.DescriptorImpl

Nested classes/interfaces inherited from class hudson.slaves.RetentionStrategy

RetentionStrategy.Always, RetentionStrategy.Demand

Nested classes/interfaces inherited from interface hudson.ExtensionPoint

ExtensionPoint.LegacyInstancesAreScopedToHudson

Field Summary

Fields inherited from class hudson.slaves.RetentionStrategy

INSTANCE, LIST, NOOP

Constructor Summary

Constructors

Constructor	Description
DockerOnceRetentionStrategy(int idleMinutes)	Creates the retention strategy.

Method Summary

Modifier and Type	Method	Description
long	check(DockerComputer c)
protected long	computerIdleStartMilliseconds(DockerComputer c)
protected boolean	computerIsIdle(DockerComputer c)
protected String	computerName(DockerComputer c)
protected long	currentMilliseconds()
boolean	equals(Object o)
int	getIdleMinutes()
int	getNumberOfTasksInProgress()
boolean	getTerminateOnceDone()
int	hashCode()
boolean	isAcceptingTasks(DockerComputer c)
void	setNumberOfTasksInProgress(Integer numberOfTasksInProgress)
void	setTerminateOnceDone(Boolean terminateOnceDone)
void	start(DockerComputer c)
void	taskAccepted(Executor executor, Queue.Task task)
void	taskCompleted(Executor executor, Queue.Task task, long durationMS)
void	taskCompletedWithProblems(Executor executor, Queue.Task task, long durationMS, Throwable problems)
protected void	terminateContainer(DockerComputer c)

Methods inherited from class hudson.slaves.RetentionStrategy

all, isManualLaunchAllowed

Methods inherited from class hudson.model.AbstractDescribableImpl

getDescriptor

Methods inherited from class java.lang.Object

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

Methods inherited from interface hudson.model.ExecutorListener

taskStarted

Constructor Details

DockerOnceRetentionStrategy

@DataBoundConstructor
public DockerOnceRetentionStrategy(int idleMinutes)

Creates the retention strategy.

Parameters:

idleMinutes - number of minutes of idleness after which to kill the agent; serves a backup in case the strategy fails to detect the end of a task

Method Details

setTerminateOnceDone

@DataBoundSetter
public void setTerminateOnceDone(Boolean terminateOnceDone)

setNumberOfTasksInProgress

@DataBoundSetter
public void setNumberOfTasksInProgress(Integer numberOfTasksInProgress)

getIdleMinutes

public int getIdleMinutes()

getTerminateOnceDone

public boolean getTerminateOnceDone()

getNumberOfTasksInProgress

public int getNumberOfTasksInProgress()

check

public long check(@NonNull
 DockerComputer c)

Specified by:

check in class RetentionStrategy<DockerComputer>

start

public void start(DockerComputer c)

Overrides:

start in class RetentionStrategy<DockerComputer>

taskAccepted

public void taskAccepted(Executor executor,
 Queue.Task task)

Specified by:

taskAccepted in interface ExecutorListener

taskCompleted

public void taskCompleted(Executor executor,
 Queue.Task task,
 long durationMS)

Specified by:

taskCompleted in interface ExecutorListener

taskCompletedWithProblems

public void taskCompletedWithProblems(Executor executor,
 Queue.Task task,
 long durationMS,
 Throwable problems)

Specified by:

taskCompletedWithProblems in interface ExecutorListener

computerIsIdle

@Restricted(org.kohsuke.accmod.restrictions.NoExternalUse.class)
protected boolean computerIsIdle(DockerComputer c)

computerIdleStartMilliseconds

@Restricted(org.kohsuke.accmod.restrictions.NoExternalUse.class)
protected long computerIdleStartMilliseconds(DockerComputer c)

currentMilliseconds

@Restricted(org.kohsuke.accmod.restrictions.NoExternalUse.class)
protected long currentMilliseconds()

computerName

@Restricted(org.kohsuke.accmod.restrictions.NoExternalUse.class)
protected String computerName(DockerComputer c)

terminateContainer

@Restricted(org.kohsuke.accmod.restrictions.NoExternalUse.class)
protected void terminateContainer(DockerComputer c)

isAcceptingTasks

public boolean isAcceptingTasks(DockerComputer c)

Overrides:

isAcceptingTasks in class RetentionStrategy<DockerComputer>

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object