| /* |
| * 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.solr.cloud.autoscaling.sim; |
| |
| import java.io.IOException; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Map; |
| import java.util.function.Predicate; |
| |
| import org.apache.solr.client.solrj.cloud.DistributedQueue; |
| import org.apache.solr.client.solrj.cloud.DistributedQueueFactory; |
| import org.apache.solr.common.util.Pair; |
| |
| /** |
| * A queue factory implementation that does nothing. |
| * |
| * @deprecated to be removed in Solr 9.0 (see SOLR-14656) |
| */ |
| public class NoopDistributedQueueFactory implements DistributedQueueFactory { |
| |
| public static final DistributedQueueFactory INSTANCE = new NoopDistributedQueueFactory(); |
| |
| @Override |
| public DistributedQueue makeQueue(String path) throws IOException { |
| return NoopDistributedQueue.INSTANCE; |
| } |
| |
| @Override |
| public void removeQueue(String path) throws IOException { |
| |
| } |
| |
| private static final class NoopDistributedQueue implements DistributedQueue { |
| static final DistributedQueue INSTANCE = new NoopDistributedQueue(); |
| |
| @Override |
| public byte[] peek() throws Exception { |
| return new byte[0]; |
| } |
| |
| @Override |
| public byte[] peek(boolean block) throws Exception { |
| return new byte[0]; |
| } |
| |
| @Override |
| public byte[] peek(long wait) throws Exception { |
| return new byte[0]; |
| } |
| |
| @Override |
| public byte[] poll() throws Exception { |
| return new byte[0]; |
| } |
| |
| @Override |
| public byte[] remove() throws Exception { |
| return new byte[0]; |
| } |
| |
| @Override |
| public byte[] take() throws Exception { |
| return new byte[0]; |
| } |
| |
| @Override |
| public void offer(byte[] data) throws Exception { |
| |
| } |
| |
| @Override |
| public Map<String, Object> getStats() { |
| return Collections.emptyMap(); |
| } |
| |
| @Override |
| public Collection<Pair<String, byte[]>> peekElements(int max, long waitMillis, Predicate<String> acceptFilter) throws Exception { |
| return Collections.emptyList(); |
| } |
| } |
| } |