Package org.mandas.docker.client

Interface LogStream

All Superinterfaces:
AutoCloseable, Closeable, Iterator<LogMessage>
public interface LogStream extends Iterator<LogMessage>, Closeable

  • Method Details

    • readFully

      String readFully()

    • attach

      void attach(OutputStream stdout, OutputStream stderr) throws IOException
      Attaches two OutputStreams to the LogStream.

      Example usage: 

       
 dockerClient
     .attachContainer(containerId,
         AttachParameter.LOGS, AttachParameter.STDOUT,
         AttachParameter.STDERR, AttachParameter.STREAM)
     .attach(System.out, System.err);

      Typically you use PipedOutputStream connected to a PipedInputStream which are read by - for example - an InputStreamReader or a Scanner. For small inputs, the PipedOutputStream just writes to the buffer of the PipedInputStream, but you actually want to read and write from separate threads, as it may deadlock the thread. 

       
   final PipedInputStream stdout = new PipedInputStream();
   final PipedInputStream stderr = new PipedInputStream();
   final PipedOutputStream stdout_pipe = new PipedOutputStream(stdout);
   final PipedOutputStream stderr_pipe = new PipedOutputStream(stderr);

   executor.submit(new Callable&lt;Void&gt;() {
     &#064;Override
     public Void call() throws Exception {
       dockerClient.attachContainer(containerId,
           AttachParameter.LOGS, AttachParameter.STDOUT,
           AttachParameter.STDERR, AttachParameter.STREAM
         .attach(stdout_pipe, stderr_pipe);
       return null;
     }
   });

   try (Scanner sc_stdout = new Scanner(stdout); Scanner sc_stderr = new Scanner(stderr)) {
     // ... read here
   }
      Parameters:
      stdout - OutputStream for the standard out
      stderr - OutputStream for the standard err
      Throws:
      IOException - if an I/O error occurs
      See Also: