private T callWithTimeout()

in flume-hdfs-sink/src/main/java/org/apache/flume/sink/hdfs/BucketWriter.java [719:764]
46 lines of code
10 McCabe index (conditional complexity)

  private <T> T callWithTimeout(final CallRunner<T> callRunner)
      throws IOException, InterruptedException {
    Future<T> future = callTimeoutPool.submit(new Callable<T>() {
      @Override
      public T call() throws Exception {
        return proxyUser.execute(new PrivilegedExceptionAction<T>() {
          @Override
          public T run() throws Exception {
            return callRunner.call();
          }
        });
      }
    });
    try {
      if (callTimeout > 0) {
        return future.get(callTimeout, TimeUnit.MILLISECONDS);
      } else {
        return future.get();
      }
    } catch (TimeoutException eT) {
      future.cancel(true);
      sinkCounter.incrementConnectionFailedCount();
      throw new IOException("Callable timed out after " +
        callTimeout + " ms" + " on file: " + bucketPath, eT);
    } catch (ExecutionException e1) {
      sinkCounter.incrementConnectionFailedCount();
      Throwable cause = e1.getCause();
      if (cause instanceof IOException) {
        throw (IOException) cause;
      } else if (cause instanceof InterruptedException) {
        throw (InterruptedException) cause;
      } else if (cause instanceof RuntimeException) {
        throw (RuntimeException) cause;
      } else if (cause instanceof Error) {
        throw (Error)cause;
      } else {
        throw new RuntimeException(e1);
      }
    } catch (CancellationException ce) {
      throw new InterruptedException(
        "Blocked callable interrupted by rotation event");
    } catch (InterruptedException ex) {
      LOG.warn("Unexpected Exception " + ex.getMessage(), ex);
      throw ex;
    }
  }