/*
* (C) 2007-2012 Alibaba Group Holding Limited.
*
* Licensed 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.
* Authors:
* wuhua <wq163@163.com> , boyan <killme2008@gmail.com>
*/
package com.taobao.metamorphosis.client.extension.producer;
import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.Set;
import java.util.concurrent.Callable;
import java.util.concurrent.FutureTask;
import com.taobao.common.store.Store;
import com.taobao.metamorphosis.Message;
import com.taobao.metamorphosis.client.MetaClientConfig;
import com.taobao.metamorphosis.client.extension.storage.MessageStore;
import com.taobao.metamorphosis.cluster.Partition;
/**
* ���˳����Ϣ����������LocalMessageStorageManager
*
* @author ��
* @since 2011-10-27 ����3:21:32
*/
public class OrderedLocalMessageStorageManager extends LocalMessageStorageManager {
public OrderedLocalMessageStorageManager(MetaClientConfig metaClientConfig) {
super(metaClientConfig);
}
@Override
public void recover() {
Set<String> names = this.topicStoreMap.keySet();
if (names == null || names.size() == 0) {
log.info("SendRecoverû����Ҫ�ָ�����Ϣ");
return;
}
if (this.messageRecoverer != null) {
for (String name : names) {
String[] tmps = name.split(SPLIT);
String topic = tmps[0];
Partition partition = new Partition(tmps[1]);
if (!partition.equals(Partition.RandomPartiton) && this.getMessageCount(topic, partition) > 0) {
// RandomPartiton��������recover
this.recover(topic, partition, this.messageRecoverer);
}
}
}
else {
log.warn("messageRecoverer�����");
}
}
/**
* �����ָ�һ������һ����������Ϣ,�ɶ�ε���(��֤��ij����Ļָ��������ֻ��һ��������)
*
* @param topic
* @param partition
* @param recoverer
* �ָ���������Ϣ�Ĵ�����
* @return �Ƿ������ύ�˻ָ�����
* */
@Override
public boolean recover(final String topic, final Partition partition, final MessageRecoverer recoverer) {
final String name = this.generateKey(topic, partition);
FutureTask<Boolean> recoverTask = new FutureTask<Boolean>(new Callable<Boolean>() {
@Override
public Boolean call() throws Exception {
try {
int count = 0;
Store randomPartitonStore =
OrderedLocalMessageStorageManager.this.getOrCreateStore(topic, Partition.RandomPartiton);
// ���ָܻ��ĸ����������Ȼָ�һ��δ֪����������(ԭ����,����������ݵIJ���ʱ���������ھ������)
// ������ͬһ��topic��δ֪�������лָ�������ᵼ�������ظ�����
if (randomPartitonStore.size() > 0) {
// ������ʱ�Ŷ�randomPartitonStoreͬ������
synchronized (randomPartitonStore) {
// ˫�ؼ��
if (randomPartitonStore.size() > 0) {
count = this.innerRecover(randomPartitonStore, recoverer);
log.info("SendRecover topic=" + topic + "@-1--1�ָ���Ϣ" + count + "��");
}
}
}
Store store = OrderedLocalMessageStorageManager.this.getOrCreateStore(topic, partition);
count = this.innerRecover(store, recoverer);
log.info("SendRecover topic=" + name + "�ָ���Ϣ" + count + "��");
}
catch (Throwable e) {
log.error("SendRecover������Ϣ�ָ�ʧ��,topic=" + name, e);
}
finally {
log.info("SendRecoverִ������Ƴ����ͻָ�����,topic=" + name);
OrderedLocalMessageStorageManager.this.topicRecoverTaskMap.remove(name);
}
return true;
}
private int innerRecover(Store store, final MessageRecoverer recoverer) throws IOException, Exception {
Iterator<byte[]> it = store.iterator();
int count = 0;
while (it.hasNext()) {
byte[] key = it.next();
Message msg =
(Message) OrderedLocalMessageStorageManager.this.deserializer.decodeObject(store.get(key));
recoverer.handle(msg);
try {
store.remove(key);
count++;
}
catch (IOException e) {
log.error("SendRecover remove message failed", e);
}
}
return count;
}
});
FutureTask<Boolean> ret = this.topicRecoverTaskMap.putIfAbsent(name, recoverTask);
if (ret == null) {
this.threadPoolExecutor.submit(recoverTask);
return true;
}
else {
if (log.isDebugEnabled()) {
log.debug("SendRecover���ͻָ�������������,����Ҫ��������,topic=" + topic);
}
return false;
}
}
@Override
protected Store newStore(final String name) throws IOException {
return new MessageStore(META_LOCALMESSAGE_PATH + File.separator + name, name);
}
}