| /* |
| * 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.accumulo.core.clientImpl; |
| |
| import org.apache.accumulo.core.Constants; |
| import org.apache.accumulo.core.clientImpl.TabletLocatorImpl.TabletServerLockChecker; |
| import org.apache.accumulo.fate.zookeeper.ServiceLock; |
| import org.apache.accumulo.fate.zookeeper.ZooCache; |
| |
| public class ZookeeperLockChecker implements TabletServerLockChecker { |
| |
| private final ZooCache zc; |
| private final String root; |
| |
| ZookeeperLockChecker(ClientContext context) { |
| zc = context.getZooCache(); |
| this.root = context.getZooKeeperRoot() + Constants.ZTSERVERS; |
| } |
| |
| @Override |
| public boolean isLockHeld(String tserver, String session) { |
| var zLockPath = ServiceLock.path(root + "/" + tserver); |
| return ServiceLock.getSessionId(zc, zLockPath) == Long.parseLong(session, 16); |
| } |
| |
| @Override |
| public void invalidateCache(String tserver) { |
| zc.clear(root + "/" + tserver); |
| } |
| |
| } |