LoggingRequestListener.java

/**
 * Copyright 2010 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package org.waveprotocol.box.server.robots.util;

import org.waveprotocol.box.server.waveserver.WaveletProvider.SubmitRequestListener;
import org.waveprotocol.wave.model.version.HashedVersion;
import org.waveprotocol.wave.util.logging.Log;

/**
 * {@link SubmitRequestListener} that simply logs its calls.
 *
 * @author ljvderijk@google.com (Lennard de Rijk)
 */
public final class LoggingRequestListener implements SubmitRequestListener {

  private final Log log;

  /**
   * Constructs a new {@link SubmitRequestListener} that logs its calls to the
   * given log.
   *
   * @param log the log to use.
   */
  public LoggingRequestListener(Log log) {
    this.log = log;
  }

  @Override
  public void onFailure(String errorMessage) {
    log.warning("Robot operations failed to be submitted: " + errorMessage);
  }

  @Override
  public void onSuccess(int operationsApplied, HashedVersion hashedVersionAfterApplication,
      long applicationTimestamp) {
    log.fine(operationsApplied + " Robot operations have been succesfully applied "
        + "changing the version to " + hashedVersionAfterApplication);
  }
}