001/* 002 * (C) Copyright 2017 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * bdelbosc 018 */ 019package org.nuxeo.ecm.platform.importer.mqueues.consumer; 020 021import org.apache.commons.logging.Log; 022import org.apache.commons.logging.LogFactory; 023import org.nuxeo.ecm.platform.importer.mqueues.message.Message; 024import org.nuxeo.ecm.platform.importer.mqueues.mqueues.MQueues; 025 026import java.util.ArrayList; 027import java.util.List; 028import java.util.Objects; 029import java.util.concurrent.Callable; 030 031/** 032 * Run a pool of ConsumerRunner. 033 * 034 * @since 9.1 035 */ 036public class ConsumerPool<M extends Message> extends AbstractCallablePool<ConsumerStatus> { 037 private static final Log log = LogFactory.getLog(ConsumerPool.class); 038 private final MQueues<M> qm; 039 private final ConsumerFactory<M> factory; 040 private final ConsumerPolicy policy; 041 private final List<MQueues.Tailer<M>> tailers; 042 043 public ConsumerPool(MQueues<M> qm, ConsumerFactory<M> factory, ConsumerPolicy policy) { 044 super(qm.size()); 045 this.qm = qm; 046 this.factory = factory; 047 this.policy = policy; 048 this.tailers = new ArrayList<>(qm.size()); 049 } 050 051 @Override 052 protected ConsumerStatus getErrorStatus() { 053 return new ConsumerStatus(0, 0, 0, 0, 0, 0, 0, true); 054 } 055 056 @Override 057 protected Callable<ConsumerStatus> getCallable(int i) { 058 MQueues.Tailer<M> tailer = qm.createTailer(i); 059 tailers.add(tailer); 060 return new ConsumerRunner<>(factory, policy, tailer); 061 } 062 063 @Override 064 protected String getThreadPrefix() { 065 return "Nuxeo-Consumer"; 066 } 067 068 @Override 069 protected void afterCall(List<ConsumerStatus> ret) { 070 closeTailers(); 071 ret.forEach(log::info); 072 log.warn(ConsumerStatus.toString(ret)); 073 } 074 075 private void closeTailers() { 076 tailers.stream().filter(Objects::nonNull).forEach(tailer -> { 077 try { 078 tailer.close(); 079 } catch (Exception e) { 080 log.error("Unable to close tailer: " + tailer.getQueue()); 081 } 082 }); 083 } 084 085 @Override 086 public void close() throws Exception { 087 super.close(); 088 closeTailers(); 089 } 090}