use of com.alibaba.otter.shared.arbitrate.impl.setl.zookeeper.monitor.ExtractStageListener in project otter by alibaba.
the class ExtractZooKeeperArbitrateEvent method await.
// private TerminArbitrateEvent terminEvent;
/**
* <pre>
* 算法:
* 1. 检查当前的Permit,阻塞等待其授权(解决Channel的pause状态处理)
* 2. 开始阻塞获取符合条件的processId
* 3. 检查当前的即时Permit状态 (在阻塞获取processId过程会出现一些error信号,process节点会被删除)
* 4. 获取Select传递的EventData数据,添加next node信息后直接返回
* </pre>
*
* @return
*/
public EtlEventData await(Long pipelineId) throws InterruptedException {
Assert.notNull(pipelineId);
PermitMonitor permitMonitor = ArbitrateFactory.getInstance(pipelineId, PermitMonitor.class);
// 阻塞等待授权
permitMonitor.waitForPermit();
ExtractStageListener extractStageListener = ArbitrateFactory.getInstance(pipelineId, ExtractStageListener.class);
// 符合条件的processId
Long processId = extractStageListener.waitForProcess();
ChannelStatus status = permitMonitor.getChannelPermit();
if (status.isStart()) {
// 即时查询一下当前的状态,状态随时可能会变
// 根据pipelineId+processId构造对应的path
String path = StagePathUtils.getSelectStage(pipelineId, processId);
try {
byte[] data = zookeeper.readData(path);
EtlEventData eventData = JsonUtils.unmarshalFromByte(data, EtlEventData.class);
// 获取下一个处理节点信息
Node node = LoadBalanceFactory.getNextTransformNode(pipelineId);
if (node == null) {
// terminEvent.single(termin);
throw new ArbitrateException("Extract_single", "no next node");
} else {
eventData.setNextNid(node.getId());
// 只有这一条路返回
return eventData;
}
} catch (ZkNoNodeException e) {
logger.error("pipeline[{}] processId[{}] is invalid , retry again", pipelineId, processId);
// /出现节点不存在,说明出现了error情况,递归调用重新获取一次
return await(pipelineId);
} catch (ZkException e) {
throw new ArbitrateException("Extract_await", e.getMessage(), e);
}
} else {
logger.warn("pipelineId[{}] extract ignore processId[{}] by status[{}]", new Object[] { pipelineId, processId, status });
// 释放下processId,因为load是等待processId最小值完成Tranform才继续,如果这里不释放,会一直卡死等待
String path = StagePathUtils.getProcess(pipelineId, processId);
zookeeper.delete(path);
// 递归调用
return await(pipelineId);
}
}
use of com.alibaba.otter.shared.arbitrate.impl.setl.zookeeper.monitor.ExtractStageListener in project otter by alibaba.
the class ExtractStageListenerTest method testProcess_dynamic.
@Test
public void testProcess_dynamic() {
final List<Long> initProcessIds = new ArrayList<Long>();
final Map<Long, List<String>> stages = new HashMap<Long, List<String>>();
try {
Long p1 = initProcess();
initStage(p1, ArbitrateConstants.NODE_SELECTED);
initStage(p1, ArbitrateConstants.NODE_EXTRACTED);
initStage(p1, ArbitrateConstants.NODE_TRANSFORMED);
Long p2 = initProcess();
initStage(p2, ArbitrateConstants.NODE_SELECTED);
initStage(p2, ArbitrateConstants.NODE_EXTRACTED);
Long p3 = initProcess();
initStage(p3, ArbitrateConstants.NODE_SELECTED, getData(nid + 1));
// 初始化信息
ExtractStageListener extract = new ExtractStageListener(pipelineId);
// 开始变化
destoryStage(p1, ArbitrateConstants.NODE_SELECTED);
destoryStage(p1, ArbitrateConstants.NODE_EXTRACTED);
destoryStage(p1, ArbitrateConstants.NODE_TRANSFORMED);
destoryProcess(p1);
Long p4 = initProcess();
initStage(p4, ArbitrateConstants.NODE_SELECTED, getData(nid));
Long p5 = initProcess();
initStage(p5, ArbitrateConstants.NODE_SELECTED, getData(nid + 1));
Long p6 = initProcess();
// 准备清理数据
initProcessIds.add(p2);
initProcessIds.add(p3);
initProcessIds.add(p4);
initProcessIds.add(p5);
initProcessIds.add(p6);
List<String> p1Stages = Lists.newArrayList();
stages.put(p1, p1Stages);
List<String> p2Stages = Arrays.asList(ArbitrateConstants.NODE_SELECTED, ArbitrateConstants.NODE_EXTRACTED);
stages.put(p2, p2Stages);
List<String> p3Stages = Arrays.asList(ArbitrateConstants.NODE_SELECTED);
stages.put(p3, p3Stages);
List<String> p4Stages = Arrays.asList(ArbitrateConstants.NODE_SELECTED);
stages.put(p4, p4Stages);
List<String> p5Stages = Arrays.asList(ArbitrateConstants.NODE_SELECTED);
stages.put(p5, p5Stages);
List<String> p6Stages = Lists.newArrayList();
stages.put(p6, p6Stages);
// sleep一下,等待数据同步
sleep();
// 进行验证
Long processId = extract.waitForProcess();
want.number(processId).isEqualTo(p4);
// 验证下process信息
StageMonitor monitor = ArbitrateFactory.getInstance(pipelineId, StageMonitor.class);
List<Long> processIds = monitor.getCurrentProcessIds();
// 获取下stage信息
List<String> currentP1Stages = monitor.getCurrentStages(p1);
List<String> currentP2Stages = monitor.getCurrentStages(p2);
List<String> currentP3Stages = monitor.getCurrentStages(p3);
List<String> currentP4Stages = monitor.getCurrentStages(p4);
List<String> currentP5Stages = monitor.getCurrentStages(p5);
List<String> currentP6Stages = monitor.getCurrentStages(p6);
want.collection(processIds).isEqualTo(initProcessIds);
want.collection(currentP1Stages).isEqualTo(stages.get(p1));
want.collection(currentP2Stages).isEqualTo(stages.get(p2));
want.collection(currentP3Stages).isEqualTo(stages.get(p3));
want.collection(currentP4Stages).isEqualTo(stages.get(p4));
want.collection(currentP5Stages).isEqualTo(stages.get(p5));
want.collection(currentP6Stages).isEqualTo(stages.get(p6));
extract.destory();
ArbitrateFactory.destory(pipelineId);
} catch (InterruptedException e) {
want.fail();
} finally {
for (Long processId : initProcessIds) {
List<String> ss = stages.get(processId);
for (String stage : ss) {
destoryStage(processId, stage);
}
destoryProcess(processId);
}
}
}
use of com.alibaba.otter.shared.arbitrate.impl.setl.zookeeper.monitor.ExtractStageListener in project otter by alibaba.
the class ExtractStageListenerTest method testProcess_init.
@Test
public void testProcess_init() {
final List<Long> initProcessIds = new ArrayList<Long>();
final Map<Long, List<String>> stages = new HashMap<Long, List<String>>();
try {
Long p1 = initProcess();
initStage(p1, ArbitrateConstants.NODE_SELECTED);
initStage(p1, ArbitrateConstants.NODE_EXTRACTED);
Long p2 = initProcess();
initStage(p2, ArbitrateConstants.NODE_SELECTED, getData(nid));
Long p3 = initProcess();
initStage(p3, ArbitrateConstants.NODE_SELECTED);
initStage(p3, ArbitrateConstants.NODE_EXTRACTED);
initStage(p3, ArbitrateConstants.NODE_TRANSFORMED);
Long p4 = initProcess();
initStage(p4, ArbitrateConstants.NODE_SELECTED, getData(nid + 1));
// 准备清理数据
initProcessIds.add(p1);
initProcessIds.add(p2);
initProcessIds.add(p3);
initProcessIds.add(p4);
List<String> p1Stages = Arrays.asList(ArbitrateConstants.NODE_SELECTED, ArbitrateConstants.NODE_EXTRACTED);
stages.put(p1, p1Stages);
List<String> p2Stages = Arrays.asList(ArbitrateConstants.NODE_SELECTED);
stages.put(p2, p2Stages);
List<String> p3Stages = Arrays.asList(ArbitrateConstants.NODE_SELECTED, ArbitrateConstants.NODE_EXTRACTED, ArbitrateConstants.NODE_TRANSFORMED);
stages.put(p3, p3Stages);
List<String> p4Stages = Arrays.asList(ArbitrateConstants.NODE_SELECTED);
stages.put(p4, p4Stages);
// 进行验证
ExtractStageListener extract = new ExtractStageListener(pipelineId);
Long processId = extract.waitForProcess();
want.number(processId).isEqualTo(p2);
// 验证下process信息
StageMonitor monitor = ArbitrateFactory.getInstance(pipelineId, StageMonitor.class);
List<Long> processIds = monitor.getCurrentProcessIds();
// 获取下stage信息
List<String> currentP1Stages = monitor.getCurrentStages(p1);
List<String> currentP2Stages = monitor.getCurrentStages(p2);
List<String> currentP3Stages = monitor.getCurrentStages(p3);
List<String> currentP4Stages = monitor.getCurrentStages(p4);
want.collection(processIds).isEqualTo(initProcessIds);
want.collection(currentP1Stages).isEqualTo(stages.get(p1));
want.collection(currentP2Stages).isEqualTo(stages.get(p2));
want.collection(currentP3Stages).isEqualTo(stages.get(p3));
want.collection(currentP4Stages).isEqualTo(stages.get(p4));
extract.destory();
ArbitrateFactory.destory(pipelineId);
} catch (InterruptedException e) {
want.fail();
} finally {
for (Long processId : initProcessIds) {
List<String> ss = stages.get(processId);
for (String stage : ss) {
destoryStage(processId, stage);
}
destoryProcess(processId);
}
}
}
Aggregations