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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.toolchain;
20  
21  import java.util.List;
22  import java.util.Map;
23  
24  import org.apache.maven.execution.MavenSession;
25  
26  /**
27   * Public API for a toolchain-aware plugin to get expected toolchain instance.
28   *
29   * @since 2.0.9
30   */
31  public interface ToolchainManager {
32  
33      // NOTE: Some plugins like Surefire access this field directly!
34      @Deprecated
35      String ROLE = ToolchainManager.class.getName();
36  
37      /**
38       * Retrieve toolchain of specified type from build context. It is expected that
39       * <code>maven-toolchains-plugin</code> contains the configuration to select the appropriate
40       * toolchain and is executed at the beginning of the build.
41       *
42       * @param type the type, must not be {@code null}
43       * @param context the Maven session, must not be {@code null}
44       * @return the toolchain selected by <code>maven-toolchains-plugin</code>
45       */
46      Toolchain getToolchainFromBuildContext(String type, MavenSession context);
47  
48      /**
49       * Select all toolchains available in user settings matching the type and requirements,
50       * independently from <code>maven-toolchains-plugin</code>.
51       *
52       * @param session the Maven session, must not be {@code null}
53       * @param type the type, must not be {@code null}
54       * @param requirements the requirements, may be {@code null}
55       * @return the matching toolchains, never {@code null}
56       * @since 3.3.0
57       */
58      List<Toolchain> getToolchains(MavenSession session, String type, Map<String, String> requirements);
59  }