| /** |
| * 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.curator.ensemble.dynamic; |
| |
| import com.google.common.base.Preconditions; |
| import org.apache.curator.ensemble.EnsembleListener; |
| import org.apache.curator.ensemble.EnsembleProvider; |
| |
| import java.io.IOException; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| public class DynamicEnsembleProvider implements EnsembleProvider, EnsembleListener { |
| |
| private final AtomicReference<String> connectionString = new AtomicReference<String>(); |
| |
| /** |
| * The connection string to use |
| * |
| * @param connectionString connection string |
| */ |
| public DynamicEnsembleProvider(String connectionString) |
| { |
| this.connectionString.set(Preconditions.checkNotNull(connectionString, "connectionString cannot be null")); |
| } |
| |
| @Override |
| public void start() throws Exception { |
| // NOP |
| } |
| |
| @Override |
| public String getConnectionString() { |
| return connectionString.get(); |
| } |
| |
| @Override |
| public void close() throws IOException { |
| // NOP |
| } |
| |
| @Override |
| public void connectionStringUpdated(String connectionString) { |
| this.connectionString.set(connectionString); |
| } |
| } |