hudson.tasks

Class Fingerprinter

java.lang.Object

hudson.tasks.BuildStepCompatibilityLayer

hudson.tasks.Publisher

hudson.tasks.Recorder

hudson.tasks.Fingerprinter

All Implemented Interfaces:

ExtensionPoint, Describable<Publisher>, BuildStep, Serializable, DependencyDeclarer, SimpleBuildStep

public class Fingerprinter
extends Recorder
implements Serializable, DependencyDeclarer, SimpleBuildStep

Records fingerprints of the specified files.

Author:

Kohsuke Kawaguchi

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Fingerprinter.DescriptorImpl
static class	Fingerprinter.FingerprintAction Action for displaying fingerprints.

Nested classes/interfaces inherited from class hudson.tasks.Publisher

Publisher.DescriptorExtensionListImpl

Nested classes/interfaces inherited from interface jenkins.tasks.SimpleBuildStep

SimpleBuildStep.LastBuildAction, SimpleBuildStep.LastBuildActionFactory

Nested classes/interfaces inherited from interface hudson.tasks.BuildStep

BuildStep.PublisherList

Nested classes/interfaces inherited from interface hudson.ExtensionPoint

ExtensionPoint.LegacyInstancesAreScopedToHudson

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	enableFingerprintsInDependencyGraph

Fields inherited from interface hudson.tasks.BuildStep

BUILDERS, PUBLISHERS

Constructor Summary

Constructors

Constructor and Description
Fingerprinter(String targets)
Fingerprinter(String targets, boolean recordBuildArtifacts) Deprecated.

Method Summary

Modifier and Type	Method and Description
void	buildDependencyGraph(AbstractProject owner, DependencyGraph graph) Invoked from AbstractProject.buildDependencyGraph(DependencyGraph).
boolean	getRecordBuildArtifacts() Deprecated.
BuildStepMonitor	getRequiredMonitorService() Declares the scope of the synchronization monitor this BuildStep expects from outside.
String	getTargets()
void	perform(Run<?,?> build, FilePath workspace, Launcher launcher, TaskListener listener) Run this step.

Methods inherited from class hudson.tasks.Recorder

getDescriptor

Methods inherited from class hudson.tasks.Publisher

all, getProjectAction, needsToRunAfterFinalized, prebuild

Methods inherited from class hudson.tasks.BuildStepCompatibilityLayer

getProjectAction, getProjectActions, perform, perform, prebuild

Methods inherited from class java.lang.Object

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

Methods inherited from interface hudson.tasks.BuildStep

getProjectAction, getProjectActions, perform, prebuild

Field Detail

enableFingerprintsInDependencyGraph

public static boolean enableFingerprintsInDependencyGraph

Constructor Detail

Fingerprinter

@DataBoundConstructor
public Fingerprinter(String targets)

Fingerprinter

@Deprecated
public Fingerprinter(String targets,
                                 boolean recordBuildArtifacts)

Deprecated.

Method Detail

getTargets

public String getTargets()

getRecordBuildArtifacts

@Deprecated
public boolean getRecordBuildArtifacts()

Deprecated.

perform

public void perform(Run<?,?> build,
                    FilePath workspace,
                    Launcher launcher,
                    TaskListener listener)
             throws InterruptedException

Description copied from interface: SimpleBuildStep

Run this step.

Specified by:

perform in interface SimpleBuildStep

Parameters:

build - a build this is running as a part of

workspace - a workspace to use for any file operations

launcher - a way to start processes

listener - a place to send output

Throws:

InterruptedException - if the step is interrupted

getRequiredMonitorService

public BuildStepMonitor getRequiredMonitorService()

Description copied from interface: BuildStep

Declares the scope of the synchronization monitor this BuildStep expects from outside.

This method is introduced for preserving compatibility with plugins written for earlier versions of Hudson, which never run multiple builds of the same job in parallel. Such plugins often assume that the outcome of the previous build is completely available, which is no longer true when we do concurrent builds.

To minimize the necessary code change for such plugins, BuildStep implementations can request Hudson to externally perform synchronization before executing them. This behavior is as follows:

BuildStepMonitor.BUILD

This BuildStep is only executed after the previous build is fully completed (thus fully restoring the earlier semantics of one build at a time.)

BuildStepMonitor.STEP

This BuildStep is only executed after the same step in the previous build is completed. For build steps that use a weaker assumption and only rely on the output from the same build step of the early builds, this improves the concurrency.

BuildStepMonitor.NONE

No external synchronization is performed on this build step. This is the most efficient, and thus the recommended value for newer plugins. Wherever necessary, you can directly use CheckPoints to perform necessary synchronizations.

Migrating Older Implementation

If you are migrating BuildStep implementations written for earlier versions of Hudson, here's what you can do:

• Just return BuildStepMonitor.BUILD to demand the backward compatible behavior from Hudson, and make no other changes to the code. This will prevent users from reaping the benefits of concurrent builds, but at least your plugin will work correctly, and therefore this is a good easy first step.
• If your build step doesn't use anything from a previous build (for example, if you don't even call Run.getPreviousBuild()), then you can return BuildStepMonitor.NONE without making further code changes and you are done with migration.
• If your build step only depends on Actions that you added in the previous build by yourself, then you only need BuildStepMonitor.STEP scope synchronization. Return it from this method ,and you are done with migration without any further code changes.
• If your build step makes more complex assumptions, return BuildStepMonitor.NONE and use CheckPoints directly in your code. The general idea is to call CheckPoint.block() before you try to access the state from the previous build.

Note to caller

For plugins written against earlier versions of Hudson, calling this method results in AbstractMethodError.

Specified by:

getRequiredMonitorService in interface BuildStep

buildDependencyGraph

public void buildDependencyGraph(AbstractProject owner,
                                 DependencyGraph graph)

Description copied from interface: DependencyDeclarer

Invoked from AbstractProject.buildDependencyGraph(DependencyGraph).

Specified by:

buildDependencyGraph in interface DependencyDeclarer

Parameters:

owner - The project that owns the publishers, builders, etc. This information is conceptually redundant, as those objects are only configured against the single owner, but this information is nevertheless passed in since often owner information is not recorded. Never null.

graph - The dependency graph being built. Never null.