AppLauncherModule.java

// =================================================================================================
// Copyright 2011 Twitter, Inc.
// -------------------------------------------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this work except in compliance with the License.
// You may obtain a copy of the License in the LICENSE file, or 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 com.twitter.common.application.modules;

import java.lang.Thread.UncaughtExceptionHandler;
import java.util.logging.Level;
import java.util.logging.Logger;

import com.google.inject.AbstractModule;
import com.google.inject.Singleton;

import com.twitter.common.util.BuildInfo;

/**
 * Binding module for the bare minimum requirements for the
 * {@link com.twitter.common.application.AppLauncher}.
 *
 * @author William Farner
 */
public class AppLauncherModule extends AbstractModule {

  private static final Logger LOG = Logger.getLogger(AppLauncherModule.class.getName());

  @Override
  protected void configure() {
    bind(BuildInfo.class).in(Singleton.class);
    bind(UncaughtExceptionHandler.class).to(LoggingExceptionHandler.class);
  }

  public static class LoggingExceptionHandler implements UncaughtExceptionHandler {
    @Override public void uncaughtException(Thread t, Throwable e) {
      LOG.log(Level.SEVERE, "Uncaught exception from " + t + ":" + e, e);
    }
  }
}