TransferListenerImpl


1   package hudson.maven;
2   
3   import hudson.model.TaskListener;
4   import org.apache.maven.wagon.events.TransferEvent;
5   import org.apache.maven.wagon.events.TransferListener;
6   
7   import java.io.PrintStream  ;
8   
9   /**
10   * {@link TransferListener} implementation.
11   *
12   * <p>
13   * This implementation puts the transfer progress indication in a distinctively formatted line,
14   * so that on HTML we can render the progress as a progress bar.
15   *
16   * @author Kohsuke Kawaguchi
17   */
18  final class TransferListenerImpl implements TransferListener {
19      /**
20       * Receives the formatter messages.
21       */
22      private final PrintStream   out;
23  
24      private long transferedSize;
25  
26  
27      public TransferListenerImpl(TaskListener listener) {
28          this.out = listener.getLogger();
29      }
30  
31      public void transferInitiated( TransferEvent e )
32      {
33          String   url = e.getWagon().getRepository().getUrl();
34  
35          if(e.getRequestType()==TransferEvent.REQUEST_PUT) {
36              out.println("Uploading to "+url);
37          } else {
38              out.println("Downloading "+url);
39          }
40      }
41  
42      public void transferStarted(TransferEvent e) {
43          transferedSize = 0;
44          long total = e.getResource().getContentLength();
45          out.println(HEADER+" start "+total);
46      }
47  
48      public void transferProgress(TransferEvent e, byte[] buffer, int length) {
49          transferedSize += length;
50          out.println(HEADER + " progress " + transferedSize);
51      }
52  
53      public void transferCompleted(TransferEvent e) {
54          out.println(HEADER + " completed");
55      }
56  
57      public void transferError(TransferEvent e) {
58          out.println(HEADER + " error");
59          e.getException().printStackTrace(out);
60      }
61  
62      public void debug(String   message) {
63      }
64  
65      /**
66       * Lines printed by this class will have this header. 
67       */
68      public static final String   HEADER = "[:TRANSFER:]";
69  }
70
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