ServerCapturer.java

/*
 * Copyright 2015 the original author or authors.
 *
 * 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 ratpack.server.internal;

import ratpack.func.Block;
import ratpack.server.RatpackServer;

public abstract class ServerCapturer {

  private static final ThreadLocal<RatpackServer> SERVER_HOLDER = new ThreadLocal<>();

  private ServerCapturer() {
  }

  public static RatpackServer capture(Block bootstrap) throws Exception {
    try {
      bootstrap.execute();
      return SERVER_HOLDER.get();
    } finally {
      SERVER_HOLDER.remove();
    }
  }

  public static void capture(RatpackServer server) throws Exception {
    SERVER_HOLDER.set(server);
  }

}