/*
* Copyright (C) 2010-2101 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.
*/
package com.alibaba.otter.shared.arbitrate.impl;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.I0Itec.zkclient.IZkConnection;
import org.I0Itec.zkclient.exception.ZkException;
import org.apache.commons.lang.StringUtils;
import org.apache.zookeeper.KeeperException;
import org.apache.zookeeper.KeeperException.NoNodeException;
import org.apache.zookeeper.ZooKeeper;
import org.apache.zookeeper.data.Stat;
import org.springframework.util.CollectionUtils;
import com.alibaba.otter.shared.arbitrate.ArbitrateViewService;
import com.alibaba.otter.shared.arbitrate.exception.ArbitrateException;
import com.alibaba.otter.shared.arbitrate.impl.manage.helper.ManagePathUtils;
import com.alibaba.otter.shared.arbitrate.impl.setl.helper.StageComparator;
import com.alibaba.otter.shared.arbitrate.impl.zookeeper.ZooKeeperClient;
import com.alibaba.otter.shared.arbitrate.model.EtlEventData;
import com.alibaba.otter.shared.arbitrate.model.MainStemEventData;
import com.alibaba.otter.shared.arbitrate.model.PositionEventData;
import com.alibaba.otter.shared.arbitrate.model.ProcessNodeEventData;
import com.alibaba.otter.shared.common.model.config.enums.StageType;
import com.alibaba.otter.shared.common.model.statistics.stage.ProcessStat;
import com.alibaba.otter.shared.common.model.statistics.stage.StageStat;
import com.alibaba.otter.shared.common.utils.JsonUtils;
import com.alibaba.otter.shared.common.utils.zookeeper.ZkClientx;
import com.alibaba.otter.shared.common.utils.zookeeper.ZooKeeperx;
/**
* 查询当前的仲裁器的一些运行状态视图
*
* @author jianghang 2011-9-27 下午05:27:38
* @version 4.0.0
*/
public class ArbitrateViewServiceImpl implements ArbitrateViewService {
private static final String CANAL_PATH = "/otter/canal/destinations/%s";
private static final String CANAL_CURSOR_PATH = CANAL_PATH + "/%s/cursor";
private ZkClientx zookeeper = ZooKeeperClient.getInstance();
public MainStemEventData mainstemData(Long channelId, Long pipelineId) {
String path = ManagePathUtils.getMainStem(channelId, pipelineId);
try {
byte[] bytes = zookeeper.readData(path);
return JsonUtils.unmarshalFromByte(bytes, MainStemEventData.class);
} catch (ZkException e) {
return null;
}
}
public Long getNextProcessId(Long channelId, Long pipelineId) {
String processRoot = ManagePathUtils.getProcessRoot(channelId, pipelineId);
IZkConnection connection = zookeeper.getConnection();
// zkclient会将获取stat信息和正常的操作分开，使用原生的zk进行优化
ZooKeeper orginZk = ((ZooKeeperx) connection).getZookeeper();
Stat processParentStat = new Stat();
// 获取所有的process列表
try {
orginZk.getChildren(processRoot, false, processParentStat);
return (Long) ((processParentStat.getCversion() + processParentStat.getNumChildren()) / 2L);
} catch (Exception e) {
return -1L;
}
}
public List<ProcessStat> listProcesses(Long channelId, Long pipelineId) {
List<ProcessStat> processStats = new ArrayList<ProcessStat>();
String processRoot = ManagePathUtils.getProcessRoot(channelId, pipelineId);
IZkConnection connection = zookeeper.getConnection();
// zkclient会将获取stat信息和正常的操作分开，使用原生的zk进行优化
ZooKeeper orginZk = ((ZooKeeperx) connection).getZookeeper();
// 获取所有的process列表
List<String> processNodes = zookeeper.getChildren(processRoot);
List<Long> processIds = new ArrayList<Long>();
for (String processNode : processNodes) {
processIds.add(ManagePathUtils.getProcessId(processNode));
}
Collections.sort(processIds);
for (int i = 0; i < processIds.size(); i++) {
Long processId = processIds.get(i);
// 当前的process可能会有变化
ProcessStat processStat = new ProcessStat();
processStat.setPipelineId(pipelineId);
processStat.setProcessId(processId);
List<StageStat> stageStats = new ArrayList<StageStat>();
processStat.setStageStats(stageStats);
try {
String processPath = ManagePathUtils.getProcess(channelId, pipelineId, processId);
Stat zkProcessStat = new Stat();
List<String> stages = orginZk.getChildren(processPath, false, zkProcessStat);
Collections.sort(stages, new StageComparator());
StageStat prev = null;
for (String stage : stages) {// 循环每个process下的stage
String stagePath = processPath + "/" + stage;
Stat zkStat = new Stat();
StageStat stageStat = new StageStat();
stageStat.setPipelineId(pipelineId);
stageStat.setProcessId(processId);
byte[] bytes = orginZk.getData(stagePath, false, zkStat);
if (bytes != null && bytes.length > 0) {
// 特殊处理zookeeper里的data信息，manager没有对应node中PipeKey的对象，所以导致反序列化会失败，需要特殊处理，删除'@'符号
String json = StringUtils.remove(new String(bytes, "UTF-8"), '@');
EtlEventData data = JsonUtils.unmarshalFromString(json, EtlEventData.class);
stageStat.setNumber(data.getNumber());
stageStat.setSize(data.getSize());
Map exts = new HashMap();
if (!CollectionUtils.isEmpty(data.getExts())) {
exts.putAll(data.getExts());
}
exts.put("currNid", data.getCurrNid());
exts.put("nextNid", data.getNextNid());
exts.put("desc", data.getDesc());
stageStat.setExts(exts);
}
if (prev != null) {// 对应的start时间为上一个节点的结束时间
stageStat.setStartTime(prev.getEndTime());
} else {
stageStat.setStartTime(zkProcessStat.getMtime()); // process的最后修改时间,select
// await成功后会设置USED标志位
}
stageStat.setEndTime(zkStat.getMtime());
if (ArbitrateConstants.NODE_SELECTED.equals(stage)) {
stageStat.setStage(StageType.SELECT);
} else if (ArbitrateConstants.NODE_EXTRACTED.equals(stage)) {
stageStat.setStage(StageType.EXTRACT);
} else if (ArbitrateConstants.NODE_TRANSFORMED.equals(stage)) {
stageStat.setStage(StageType.TRANSFORM);
// } else if
// (ArbitrateConstants.NODE_LOADED.equals(stage)) {
// stageStat.setStage(StageType.LOAD);
}
prev = stageStat;
stageStats.add(stageStat);
}
// 添加一个当前正在处理的
StageStat currentStageStat = new StageStat();
currentStageStat.setPipelineId(pipelineId);
currentStageStat.setProcessId(processId);
if (prev == null) {
byte[] bytes = orginZk.getData(processPath, false, zkProcessStat);
if (bytes == null || bytes.length == 0) {
continue; // 直接认为未使用，忽略之
}
ProcessNodeEventData nodeData = JsonUtils.unmarshalFromByte(bytes, ProcessNodeEventData.class);
if (nodeData.getStatus().isUnUsed()) {// process未使用,直接忽略
continue; // 跳过该process
} else {
currentStageStat.setStage(StageType.SELECT);// select操作
currentStageStat.setStartTime(zkProcessStat.getMtime());
}
} else {
// 判断上一个节点，确定当前的stage
StageType stage = prev.getStage();
if (stage.isSelect()) {
currentStageStat.setStage(StageType.EXTRACT);
} else if (stage.isExtract()) {
currentStageStat.setStage(StageType.TRANSFORM);
} else if (stage.isTransform()) {
currentStageStat.setStage(StageType.LOAD);
} else if (stage.isLoad()) {// 已经是最后一个节点了
continue;
}
currentStageStat.setStartTime(prev.getEndTime());// 开始时间为上一个节点的结束时间
}
if (currentStageStat.getStage().isLoad()) {// load必须为第一个process节点
if (i == 0) {
stageStats.add(currentStageStat);
}
} else {
stageStats.add(currentStageStat);// 其他情况都添加
}
} catch (NoNodeException e) {
// ignore
} catch (KeeperException e) {
throw new ArbitrateException(e);
} catch (InterruptedException e) {
// ignore
} catch (UnsupportedEncodingException e) {
// ignore
}
processStats.add(processStat);
}
return processStats;
}
public PositionEventData getCanalCursor(String destination, short clientId) {
String path = String.format(CANAL_CURSOR_PATH, destination, String.valueOf(clientId));
try {
IZkConnection connection = zookeeper.getConnection();
// zkclient会将获取stat信息和正常的操作分开，使用原生的zk进行优化
ZooKeeper orginZk = ((ZooKeeperx) connection).getZookeeper();
Stat stat = new Stat();
byte[] bytes = orginZk.getData(path, false, stat);
PositionEventData eventData = new PositionEventData();
eventData.setCreateTime(new Date(stat.getCtime()));
eventData.setModifiedTime(new Date(stat.getMtime()));
eventData.setPosition(new String(bytes, "UTF-8"));
return eventData;
} catch (Exception e) {
return null;
}
}
public void removeCanalCursor(String destination, short clientId) {
String path = String.format(CANAL_CURSOR_PATH, destination, String.valueOf(clientId));
zookeeper.delete(path);
}
public void removeCanal(String destination) {
String path = String.format(CANAL_PATH, destination);
zookeeper.deleteRecursive(path);
}
}