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org.apache.helix.store.zk.ZkHelixPropertyStore.getStat()方法的使用及代码示例

转载 作者:知者 更新时间:2024-03-15 07:50:49 26 4
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本文整理了Java中org.apache.helix.store.zk.ZkHelixPropertyStore.getStat()方法的一些代码示例,展示了ZkHelixPropertyStore.getStat()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。ZkHelixPropertyStore.getStat()方法的具体详情如下:
包路径:org.apache.helix.store.zk.ZkHelixPropertyStore
类名称:ZkHelixPropertyStore
方法名:getStat

ZkHelixPropertyStore.getStat介绍

暂无

代码示例

代码示例来源:origin: org.apache.helix/helix-core

@Override
public Stat getStat(String path, int options) {
 if (_fallbackStore == null) {
  return super.getStat(path, options);
 } else {
  Stat stat = super.getStat(path, options);
  if (stat == null) {
   stat = _fallbackStore.getStat(path, options);
  }
  return stat;
 }
}

代码示例来源:origin: apache/helix

@Override
public Stat getStat(String path, int options) {
 if (_fallbackStore == null) {
  return super.getStat(path, options);
 } else {
  Stat stat = super.getStat(path, options);
  if (stat == null) {
   stat = _fallbackStore.getStat(path, options);
  }
  return stat;
 }
}

代码示例来源:origin: apache/helix

@Override
public boolean update(String path, DataUpdater<T> updater, int options) {
 if (_fallbackStore == null) {
  return super.update(path, updater, options);
 } else {
  Stat stat = super.getStat(path, options);
  if (stat == null) {
   // create znode at new location with fallback-value
   T fallbackValue = _fallbackStore.get(path, null, options);
   boolean succeed = super.create(path, fallbackValue, AccessOption.PERSISTENT);
   if (!succeed) {
    LOG.error("Can't update " + path + " since there are concurrent updates");
    return false;
   }
  }
  return super.update(path, updater, options);
 }
}

代码示例来源:origin: org.apache.helix/helix-core

@Override
public boolean update(String path, DataUpdater<T> updater, int options) {
 if (_fallbackStore == null) {
  return super.update(path, updater, options);
 } else {
  Stat stat = super.getStat(path, options);
  if (stat == null) {
   // create znode at new location with fallback-value
   T fallbackValue = _fallbackStore.get(path, null, options);
   boolean succeed = super.create(path, fallbackValue, AccessOption.PERSISTENT);
   if (!succeed) {
    LOG.error("Can't update " + path + " since there are concurrent updates");
    return false;
   }
  }
  return super.update(path, updater, options);
 }
}

代码示例来源:origin: apache/helix

@Test
 public void testZkClientMonitor() throws JMException {
  final String TEST_ROOT = "/test_root";

  ZkHelixPropertyStore<ZNRecord> store =
    new ZkHelixPropertyStore<ZNRecord>(ZK_ADDR, new SerializableSerializer(), TEST_ROOT);

  ObjectName name = MBeanRegistrar
    .buildObjectName(MonitorDomainNames.HelixZkClient.name(), ZkClientMonitor.MONITOR_TYPE,
      ZkHelixPropertyStore.MONITOR_TYPE, ZkClientMonitor.MONITOR_KEY, TEST_ROOT,
      ZkClientPathMonitor.MONITOR_PATH, "Root");
  MBeanServer beanServer = ManagementFactory.getPlatformMBeanServer();
  Assert.assertTrue(beanServer.isRegistered(name));

  store.getStat("/", AccessOption.PERSISTENT);

  Assert.assertEquals((long) beanServer.getAttribute(name, "ReadCounter"), 1);
 }
}

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