Package org.apache.maven.plugin.internal

Class DefaultMavenPluginManager

java.lang.Object

org.apache.maven.plugin.internal.DefaultMavenPluginManager

All Implemented Interfaces:

MavenPluginManager

@Component(role=MavenPluginManager.class)
public class DefaultMavenPluginManager
extends Object
implements MavenPluginManager

Provides basic services to manage Maven plugins and their mojos. This component is kept general in its design such that the plugins/mojos can be used in arbitrary contexts. In particular, the mojos can be used for ordinary build plugins as well as special purpose plugins like reports.

Since:

3.0

Author:

Benjamin Bentmann

Field Summary

Fields

Modifier and Type	Field	Description
static final String	KEY_EXTENSIONS_REALMS	PluginId => ExtensionRealmCache.CacheRecord map MavenProject context value key.

Constructor Summary

Constructors

Constructor	Description
DefaultMavenPluginManager()

Method Summary

Modifier and Type	Method	Description
void	checkRequiredMavenVersion(PluginDescriptor pluginDescriptor)	Verifies the specified plugin is compatible with the current Maven runtime.
<T> T	getConfiguredMojo(Class<T> mojoInterface, MavenSession session, MojoExecution mojoExecution)	Looks up the mojo for the specified mojo execution and populates its parameters from the configuration given by the mojo execution.
MojoDescriptor	getMojoDescriptor(Plugin plugin, String goal, List<org.eclipse.aether.repository.RemoteRepository> repositories, org.eclipse.aether.RepositorySystemSession session)	Retrieves the descriptor for the specified plugin goal from the plugin's main artifact.
PluginDescriptor	getPluginDescriptor(Plugin plugin, List<org.eclipse.aether.repository.RemoteRepository> repositories, org.eclipse.aether.RepositorySystemSession session)	Retrieves the descriptor for the specified plugin from its main artifact.
void	releaseMojo(Object mojo, MojoExecution mojoExecution)	Releases the specified mojo back to the container.
ExtensionRealmCache.CacheRecord	setupExtensionsRealm(MavenProject project, Plugin plugin, org.eclipse.aether.RepositorySystemSession session)	Sets up class realm for the specified build extensions plugin.
void	setupPluginRealm(PluginDescriptor pluginDescriptor, MavenSession session, ClassLoader parent, List<String> imports, org.eclipse.aether.graph.DependencyFilter filter)	Sets up the class realm for the specified plugin.

Methods inherited from class java.lang.Object

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

Field Details

KEY_EXTENSIONS_REALMS

public static final String KEY_EXTENSIONS_REALMS

PluginId => ExtensionRealmCache.CacheRecord map MavenProject context value key. The map is used to ensure the same class realm is used to load build extensions and load mojos for extensions=true plugins.

Note: This is part of internal implementation and may be changed or removed without notice

Since:

3.3.0

Constructor Details

DefaultMavenPluginManager

public DefaultMavenPluginManager()

Method Details

getPluginDescriptor

public PluginDescriptor getPluginDescriptor(Plugin plugin,
 List<org.eclipse.aether.repository.RemoteRepository> repositories,
 org.eclipse.aether.RepositorySystemSession session)
                                     throws PluginResolutionException,
PluginDescriptorParsingException,
InvalidPluginDescriptorException

Description copied from interface: MavenPluginManager

Retrieves the descriptor for the specified plugin from its main artifact.

Specified by:

getPluginDescriptor in interface MavenPluginManager

Parameters:

plugin - The plugin whose descriptor should be retrieved, must not be null.

repositories - The plugin repositories to use for resolving the plugin's main artifact, must not be null.

session - The repository session to use for resolving the plugin's main artifact, must not be null.

Returns:

The plugin descriptor, never null.

Throws:

PluginResolutionException

PluginDescriptorParsingException

InvalidPluginDescriptorException

getMojoDescriptor

public MojoDescriptor getMojoDescriptor(Plugin plugin,
 String goal,
 List<org.eclipse.aether.repository.RemoteRepository> repositories,
 org.eclipse.aether.RepositorySystemSession session)
                                 throws MojoNotFoundException,
PluginResolutionException,
PluginDescriptorParsingException,
InvalidPluginDescriptorException

Description copied from interface: MavenPluginManager

Retrieves the descriptor for the specified plugin goal from the plugin's main artifact.

Specified by:

getMojoDescriptor in interface MavenPluginManager

Parameters:

plugin - The plugin whose mojo descriptor should be retrieved, must not be null.

goal - The simple name of the mojo whose descriptor should be retrieved, must not be null.

repositories - The plugin repositories to use for resolving the plugin's main artifact, must not be null.

session - The repository session to use for resolving the plugin's main artifact, must not be null.

Returns:

The mojo descriptor, never null.

Throws:

MojoNotFoundException

PluginResolutionException

PluginDescriptorParsingException

InvalidPluginDescriptorException

checkRequiredMavenVersion

public void checkRequiredMavenVersion(PluginDescriptor pluginDescriptor)
                               throws PluginIncompatibleException

Description copied from interface: MavenPluginManager

Verifies the specified plugin is compatible with the current Maven runtime.

Specified by:

checkRequiredMavenVersion in interface MavenPluginManager

Parameters:

pluginDescriptor - The descriptor of the plugin to check, must not be null.

Throws:

PluginIncompatibleException

setupPluginRealm

public void setupPluginRealm(PluginDescriptor pluginDescriptor,
 MavenSession session,
 ClassLoader parent,
 List<String> imports,
 org.eclipse.aether.graph.DependencyFilter filter)
                      throws PluginResolutionException,
PluginContainerException

Description copied from interface: MavenPluginManager

Sets up the class realm for the specified plugin. Both the class realm and the plugin artifacts that constitute it will be stored in the plugin descriptor.

Specified by:

setupPluginRealm in interface MavenPluginManager

Parameters:

pluginDescriptor - The plugin descriptor in which to save the class realm and the plugin artifacts, must not be null.

session - The build session from which to pick the current project and repository settings, must not be null.

parent - The parent class realm for the plugin, may be null to use the Maven core realm.

imports - The packages/types to import from the parent realm, may be null.

filter - The filter used to exclude certain plugin dependencies, may be null.

Throws:

PluginResolutionException

PluginContainerException

getConfiguredMojo

public <T> T getConfiguredMojo(Class<T> mojoInterface,
 MavenSession session,
 MojoExecution mojoExecution)
                        throws PluginConfigurationException,
PluginContainerException

Description copied from interface: MavenPluginManager

Looks up the mojo for the specified mojo execution and populates its parameters from the configuration given by the mojo execution. The mojo/plugin descriptor associated with the mojo execution provides the class realm to lookup the mojo from. Warning: The returned mojo instance must be released via MavenPluginManager.releaseMojo(Object, MojoExecution) when the mojo is no longer needed to free any resources allocated for it.

Specified by:

getConfiguredMojo in interface MavenPluginManager

Parameters:

mojoInterface - The component role of the mojo, must not be null.

session - The build session in whose context the mojo will be used, must not be null.

mojoExecution - The mojo execution to retrieve the mojo for, must not be null.

Returns:

The ready-to-execute mojo, never null.

Throws:

PluginConfigurationException

PluginContainerException

releaseMojo

public void releaseMojo(Object mojo,
 MojoExecution mojoExecution)

Description copied from interface: MavenPluginManager

Releases the specified mojo back to the container.

Specified by:

releaseMojo in interface MavenPluginManager

Parameters:

mojo - The mojo to release, may be null.

mojoExecution - The mojo execution the mojo was originally retrieved for, must not be null.

setupExtensionsRealm

public ExtensionRealmCache.CacheRecord setupExtensionsRealm(MavenProject project,
 Plugin plugin,
 org.eclipse.aether.RepositorySystemSession session)
                                                     throws PluginManagerException

Description copied from interface: MavenPluginManager

Sets up class realm for the specified build extensions plugin.

Specified by:

setupExtensionsRealm in interface MavenPluginManager

Throws:

PluginManagerException