BuildVariableContributor (Jenkins core 2.401.3 API)

java.lang.Object
- hudson.model.BuildVariableContributor

All Implemented Interfaces:

ExtensionPoint
```
public abstract class BuildVariableContributor
extends Object
implements ExtensionPoint
```
Contributes build variables to builds.
This extension point can be used to externally add build variables, which are then used for various parameter expansions by Builders and Publishers. Aside from adding variables of the fixed name, a typical strategy is to look for specific JobPropertys and other similar configurations of Jobs to compute values.

Since:

1.403

Author:

Kohsuke Kawaguchi

See Also:

EnvironmentContributor

Nested Class Summary
- Nested classes/interfaces inherited from interface hudson.ExtensionPoint
  ExtensionPoint.LegacyInstancesAreScopedToHudson

Constructor Summary

Constructors
Constructor Description

BuildVariableContributor()

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`static ExtensionList<BuildVariableContributor>`	`all()`	Returns all the registered `BuildVariableContributor`s.
`abstract void`	`buildVariablesFor(AbstractBuild build, Map<String,String> variables)`	Contributes build variables used for a build.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - BuildVariableContributor
```
public BuildVariableContributor()
```
- Method Detail
  - buildVariablesFor
```
public abstract void buildVariablesFor(AbstractBuild build,
                                       Map<String,String> variables)
```
    Contributes build variables used for a build.
    This method can be called repeatedly for the same AbstractBuild, thus the computation of this method needs to be efficient. If you have a time-consuming computation, one strategy is to take the hit once and then add the result as InvisibleAction to AbstractBuild, then reuse those values later on.
    This method gets invoked concurrently for multiple Runs that are being built at the same time, so it must be concurrent-safe.
    
    Parameters:
    
    build - Build that's being performed. Never null.
    
    variables - Partially built variable map. Implementation of this method is expected to add additional variables here. Never null.
  - all
```
public static ExtensionList<BuildVariableContributor> all()
```
    Returns all the registered BuildVariableContributors.