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1   /**
2    * Copyright 2008-2012 The Kuali Foundation
3    *
4    * Licensed under the Educational Community License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    * http://www.opensource.org/licenses/ecl2.php
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.codehaus.mojo.wagon;
17  
18  /*
19   * Licensed to the Apache Software Foundation (ASF) under one or more contributor license
20   * agreements. See the NOTICE file distributed with this work for additional information regarding
21   * copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the
22   * "License"); you may not use this file except in compliance with the License. You may obtain a
23   * copy of the License at
24   * 
25   * http://www.apache.org/licenses/LICENSE-2.0
26   * 
27   * Unless required by applicable law or agreed to in writing, software distributed under the License
28   * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
29   * or implied. See the License for the specific language governing permissions and limitations under
30   * the License.
31   */
32  
33  import java.io.IOException;
34  
35  import org.apache.maven.wagon.Wagon;
36  import org.apache.maven.wagon.WagonException;
37  import org.codehaus.mojo.wagon.shared.WagonDownload;
38  
39  /**
40   * Check for the existing of remote resource.
41   * 
42   * @goal exist
43   * @requiresProject true
44   */
45  public class ExistMojo
46      extends AbstractSingleWagonMojo
47  {
48      /**
49       * relative path to a remote resource
50       * @parameter expression="${wagon.resource}" default-value=""
51       */
52      private String resource = "";
53      
54      /**
55       * @component
56       */
57      protected WagonDownload wagonDownload;
58  
59      
60      protected void execute( Wagon wagon )
61          throws WagonException, IOException
62      {
63          if ( this.wagonDownload.exists( wagon, resource ) )
64          {
65              this.getLog().info( resource + " exists. " );
66          }
67          else
68          {
69              this.getLog().info( resource + " does not exists. " );
70          }
71      }
72  
73  }