| /* |
| * 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.nutch.webui.client; |
| |
| import java.util.concurrent.ExecutionException; |
| |
| import org.apache.nutch.webui.client.impl.NutchClientImpl; |
| import org.apache.nutch.webui.model.NutchInstance; |
| import org.springframework.stereotype.Component; |
| |
| import com.google.common.cache.CacheBuilder; |
| import com.google.common.cache.CacheLoader; |
| import com.google.common.cache.LoadingCache; |
| |
| @Component |
| public class NutchClientFactory { |
| private LoadingCache<NutchInstance, NutchClient> cache; |
| |
| public NutchClientFactory() { |
| cache = CacheBuilder.newBuilder().build(new NutchClientCacheLoader()); |
| } |
| |
| public NutchClient getClient(NutchInstance instance) { |
| try { |
| return cache.get(instance); |
| } catch (ExecutionException e) { |
| throw new IllegalStateException(e); |
| } |
| } |
| |
| private static class NutchClientCacheLoader extends |
| CacheLoader<NutchInstance, NutchClient> { |
| @Override |
| public NutchClient load(NutchInstance key) throws Exception { |
| return new NutchClientImpl(key); |
| } |
| } |
| } |