branch-2.0.4-alpha/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ha/ZKFCTestUtil.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.hadoop.ha;

import org.apache.hadoop.test.MultithreadedTestUtil;

public class ZKFCTestUtil {
  
  public static void waitForHealthState(ZKFailoverController zkfc,
      HealthMonitor.State state,
      MultithreadedTestUtil.TestContext ctx) throws Exception {
    while (zkfc.getLastHealthState() != state) {
      if (ctx != null) {
        ctx.checkException();
      }
      Thread.sleep(50);
    }
  }
}