1 package org.apache.maven.plugin;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import java.util.List;
23
24 import org.apache.maven.execution.MavenSession;
25 import org.apache.maven.model.Plugin;
26 import org.apache.maven.plugin.descriptor.MojoDescriptor;
27 import org.apache.maven.plugin.descriptor.PluginDescriptor;
28 import org.sonatype.aether.RepositorySystemSession;
29 import org.sonatype.aether.graph.DependencyFilter;
30 import org.sonatype.aether.repository.RemoteRepository;
31
32 /**
33 * Provides basic services to manage Maven plugins and their mojos. This component is kept general in its design such
34 * that the plugins/mojos can be used in arbitrary contexts. In particular, the mojos can be used for ordinary build
35 * plugins as well as special purpose plugins like reports.
36 *
37 * @since 3.0
38 * @author Benjamin Bentmann
39 */
40 public interface MavenPluginManager
41 {
42
43 /**
44 * Retrieves the descriptor for the specified plugin from its main artifact.
45 *
46 * @param plugin The plugin whose descriptor should be retrieved, must not be {@code null}.
47 * @param repositories The plugin repositories to use for resolving the plugin's main artifact, must not be {@code
48 * null}.
49 * @param session The repository session to use for resolving the plugin's main artifact, must not be {@code null}.
50 * @return The plugin descriptor, never {@code null}.
51 */
52 PluginDescriptor getPluginDescriptor( Plugin plugin, List<RemoteRepository> repositories, RepositorySystemSession session )
53 throws PluginResolutionException, PluginDescriptorParsingException, InvalidPluginDescriptorException;
54
55 /**
56 * Retrieves the descriptor for the specified plugin goal from the plugin's main artifact.
57 *
58 * @param plugin The plugin whose mojo descriptor should be retrieved, must not be {@code null}.
59 * @param goal The simple name of the mojo whose descriptor should be retrieved, must not be {@code null}.
60 * @param repositories The plugin repositories to use for resolving the plugin's main artifact, must not be {@code
61 * null}.
62 * @param session The repository session to use for resolving the plugin's main artifact, must not be {@code null}.
63 * @return The mojo descriptor, never {@code null}.
64 */
65 MojoDescriptor getMojoDescriptor( Plugin plugin, String goal, List<RemoteRepository> repositories,
66 RepositorySystemSession session )
67 throws MojoNotFoundException, PluginResolutionException, PluginDescriptorParsingException,
68 InvalidPluginDescriptorException;
69
70 /**
71 * Sets up the class realm for the specified plugin. Both the class realm and the plugin artifacts that constitute
72 * it will be stored in the plugin descriptor.
73 *
74 * @param pluginDescriptor The plugin descriptor in which to save the class realm and the plugin artifacts, must not
75 * be {@code null}.
76 * @param session The build session from which to pick the current project and repository settings, must not be
77 * {@code null}.
78 * @param parent The parent class realm for the plugin, may be {@code null} to use the Maven core realm.
79 * @param imports The packages/types to import from the parent realm, may be {@code null}.
80 * @param filter The filter used to exclude certain plugin dependencies, may be {@code null}.
81 */
82 void setupPluginRealm( PluginDescriptor pluginDescriptor, MavenSession session, ClassLoader parent,
83 List<String> imports, DependencyFilter filter )
84 throws PluginResolutionException, PluginContainerException;
85
86 /**
87 * Looks up the mojo for the specified mojo execution and populates its parameters from the configuration given by
88 * the mojo execution. The mojo/plugin descriptor associated with the mojo execution provides the class realm to
89 * lookup the mojo from. <strong>Warning:</strong> The returned mojo instance must be released via
90 * {@link #releaseMojo(Object, MojoExecution)} when the mojo is no longer needed to free any resources allocated for
91 * it.
92 *
93 * @param mojoInterface The component role of the mojo, must not be {@code null}.
94 * @param session The build session in whose context the mojo will be used, must not be {@code null}.
95 * @param mojoExecution The mojo execution to retrieve the mojo for, must not be {@code null}.
96 * @return The ready-to-execute mojo, never {@code null}.
97 */
98 <T> T getConfiguredMojo( Class<T> mojoInterface, MavenSession session, MojoExecution mojoExecution )
99 throws PluginConfigurationException, PluginContainerException;
100
101 /**
102 * Releases the specified mojo back to the container.
103 *
104 * @param mojo The mojo to release, may be {@code null}.
105 * @param mojoExecution The mojo execution the mojo was originally retrieved for, must not be {@code null}.
106 */
107 void releaseMojo( Object mojo, MojoExecution mojoExecution );
108
109 }