1 package org.apache.maven.eventspy;
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.Map;
23
24 /**
25 * A core extension to monitor Maven's execution. Typically, such an extension gets loaded into Maven by specifying the
26 * system property {@code maven.ext.class.path} on the command line. As soon as dependency injection is setup, Maven
27 * looks up all implementators of this interface and calls their {@link #init(Context)} method. <em>Note:</em>
28 * Implementors are strongly advised to inherit from {@link AbstractEventSpy} instead of directly implementing this
29 * interface.
30 */
31 public interface EventSpy
32 {
33
34 interface Context
35 {
36
37 Map<String, Object> getData();
38
39 }
40
41 void init( Context context )
42 throws Exception;
43
44 void onEvent( Object event )
45 throws Exception;
46
47 void close()
48 throws Exception;
49
50 }