1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.maven.plugin;
20
21 import java.util.List;
22
23 import org.apache.maven.model.Plugin;
24 import org.apache.maven.plugin.descriptor.PluginDescriptor;
25 import org.eclipse.aether.RepositorySystemSession;
26 import org.eclipse.aether.repository.RemoteRepository;
27
28 /**
29 * Caches raw plugin descriptors. A raw plugin descriptor is a descriptor that has just been extracted from the plugin
30 * artifact and does not contain any runtime specific data. The cache must not be used for descriptors that hold runtime
31 * data like the plugin realm. <strong>Warning:</strong> This is an internal utility interface that is only public for
32 * technical reasons, it is not part of the public API. In particular, this interface can be changed or deleted without
33 * prior notice.
34 *
35 * @since 3.0
36 * @author Benjamin Bentmann
37 */
38 public interface PluginDescriptorCache {
39
40 /**
41 * A cache key.
42 */
43 interface Key {
44 // marker interface for cache keys
45 }
46
47 @FunctionalInterface
48 interface PluginDescriptorSupplier {
49 PluginDescriptor load()
50 throws PluginResolutionException, PluginDescriptorParsingException, InvalidPluginDescriptorException;
51 }
52
53 Key createKey(Plugin plugin, List<RemoteRepository> repositories, RepositorySystemSession session);
54
55 void put(Key key, PluginDescriptor pluginDescriptor);
56
57 PluginDescriptor get(Key key);
58
59 default PluginDescriptor get(Key key, PluginDescriptorSupplier supplier)
60 throws PluginResolutionException, PluginDescriptorParsingException, InvalidPluginDescriptorException {
61 PluginDescriptor pd = get(key);
62 if (pd == null) {
63 pd = supplier.load();
64 put(key, pd);
65 }
66 return pd;
67 }
68
69 void flush();
70 }