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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.execution;
20  
21  import org.apache.maven.plugin.MojoExecution;
22  import org.apache.maven.project.MavenProject;
23  
24  /**
25   * Holds data relevant for an execution event.
26   *
27   */
28  public interface ExecutionEvent {
29  
30      /**
31       * The possible types of execution events.
32       */
33      enum Type {
34          ProjectDiscoveryStarted,
35          SessionStarted,
36          SessionEnded,
37          ProjectSkipped,
38          ProjectStarted,
39          ProjectSucceeded,
40          ProjectFailed,
41          MojoSkipped,
42          MojoStarted,
43          MojoSucceeded,
44          MojoFailed,
45          ForkStarted,
46          ForkSucceeded,
47          ForkFailed,
48          ForkedProjectStarted,
49          ForkedProjectSucceeded,
50          ForkedProjectFailed,
51      }
52  
53      /**
54       * Gets the type of the event.
55       *
56       * @return The type of the event, never {@code null}.
57       */
58      Type getType();
59  
60      /**
61       * Gets the session from which this event originates.
62       *
63       * @return The current session, never {@code null}.
64       */
65      MavenSession getSession();
66  
67      /**
68       * Gets the current project (if any).
69       *
70       * @return The current project or {@code null} if not applicable.
71       */
72      MavenProject getProject();
73  
74      /**
75       * Gets the current mojo execution (if any).
76       *
77       * @return The current mojo execution or {@code null} if not applicable.
78       */
79      MojoExecution getMojoExecution();
80  
81      /**
82       * Gets the exception that caused the event (if any).
83       *
84       * @return The exception or {@code null} if none.
85       */
86      Exception getException();
87  }