Java NodeCache.close方法代码示例

import org.apache.curator.framework.recipes.cache.NodeCache; //导入方法依赖的package包/类
public static void main(String[] args) throws Exception {
    CuratorFramework framework = CuratorFrameworkFactory.builder()
            .connectString("localhost:2181").retryPolicy(new RetryNTimes(3, 2000)).build();
    try {
        framework.start();
        final NodeCache nodeCache = new NodeCache(framework, "/test");
        nodeCache.getListenable().addListener(new NodeCacheListener() {
            @Override
            public void nodeChanged() throws Exception {
                ChildData data = nodeCache.getCurrentData();
                System.out.println(new String(data.getData()) + " / " + data);
            }
        });
        nodeCache.start();

        Thread.sleep(30000);

        nodeCache.close();
    } finally {
        framework.close();
    }
}
 

import org.apache.curator.framework.recipes.cache.NodeCache; //导入方法依赖的package包/类
/**
 * 关闭（释放相关资源）
 */
public void close() {
    for (NodeCache nodeCache : nodeCaches) {
        try {
            nodeCache.close();
        } catch (IOException e) {
            logger.error("关闭节点监听器出错：", e);
        }
    }
    zkTemplate.close();
}
 

import org.apache.curator.framework.recipes.cache.NodeCache; //导入方法依赖的package包/类
@Override
public void stop() {
    singleThreadExecutor.shutdown();
    nodes.forEach(CloseableUtils::closeQuietly);
    for (NodeCache node : nodes) {
        try {
            node.close();
        } catch (IOException e) {
            // ignored.
            logger.warn("[{}] Close ZK node cache failed. message={}", gondola.getHostId(), e.getMessage());
        }
    }
    Utils.stopThreads(threads);
}
 

import org.apache.curator.framework.recipes.cache.NodeCache; //导入方法依赖的package包/类
public synchronized void close() { // TODO: implemente with AtomicReference<CloseFuture>
    logger.info("Close zookeeper client");
    try {
        for (NodeCache cache : cachePool) {
            logger.info("Close cache {}", cache);
            cache.getListenable().clear();
            cache.close();
        }
        cachePool.clear();
    } catch (IOException e) {
        logger.error("Error while closing zookeeper node listening caches", e);
    }
    client.close();

}
 

import org.apache.curator.framework.recipes.cache.NodeCache; //导入方法依赖的package包/类
public void stopNodeCache(NodeCache cache) {
  try {
    cache.close();
  } catch (IOException e) {
    log.error("Error stopping nodeCache {}", cache, e);
    throw new RuntimeException(e);
  }
}
 

import org.apache.curator.framework.recipes.cache.NodeCache; //导入方法依赖的package包/类
@Override
public void onStop(final CuratorFramework curator) throws IOException
{
    for (NodeCache childrenCache : childrens) {
        childrenCache.close();
    }
}
 

import org.apache.curator.framework.recipes.cache.NodeCache; //导入方法依赖的package包/类
@BeforeMethod(alwaysRun = true, timeOut = 30_000)
public void setup() throws Exception {
    // Get the zkConnection string from minicluster
    String zkConnection = "localhost:" + hBaseUtils.getZkCluster().getClientPort();

    zkClient = provideInitializedZookeeperClient(zkConnection);

    // Synchronize TSO start
    barrierTillTSOAddressPublication = new CountDownLatch(1);
    final NodeCache currentTSOZNode = new NodeCache(zkClient, CURRENT_TSO_PATH);
    currentTSOZNode.getListenable().addListener(new NodeCacheListener() {

        @Override
        public void nodeChanged() throws Exception {
            byte[] currentTSOAndEpochAsBytes = currentTSOZNode.getCurrentData().getData();
            String currentTSOAndEpoch = new String(currentTSOAndEpochAsBytes, Charsets.UTF_8);
            if (currentTSOAndEpoch.endsWith("#0")) { // Wait till a TSO instance publishes the epoch
                barrierTillTSOAddressPublication.countDown();
            }
        }

    });
    currentTSOZNode.start(true);

    // Configure TSO 1
    TSOServerConfig config1 = new TSOServerConfig();
    config1.setPort(TSO1_PORT);
    config1.setConflictMapSize(1000);
    config1.setLeaseModule(new TestHALeaseManagementModule(TEST_LEASE_PERIOD_MS, TSO_LEASE_PATH, CURRENT_TSO_PATH, zkConnection, NAMESPACE));
    Injector injector1 = Guice.createInjector(new TestTSOModule(hbaseConf, config1));
    LOG.info("===================== Starting TSO 1 =====================");
    tso1 = injector1.getInstance(TSOServer.class);
    leaseManager1 = (PausableLeaseManager) injector1.getInstance(LeaseManagement.class);
    tso1.startAndWait();
    TestUtils.waitForSocketListening("localhost", TSO1_PORT, 100);
    LOG.info("================ Finished loading TSO 1 ==================");

    // Configure TSO 2
    TSOServerConfig config2 = new TSOServerConfig();
    config2.setPort(TSO2_PORT);
    config2.setConflictMapSize(1000);
    config2.setLeaseModule(new TestHALeaseManagementModule(TEST_LEASE_PERIOD_MS, TSO_LEASE_PATH, CURRENT_TSO_PATH, zkConnection, NAMESPACE));
    Injector injector2 = Guice.createInjector(new TestTSOModule(hbaseConf, config2));
    LOG.info("===================== Starting TSO 2 =====================");
    tso2 = injector2.getInstance(TSOServer.class);
    injector2.getInstance(LeaseManagement.class);
    tso2.startAndWait();
    // Don't do this here: TestUtils.waitForSocketListening("localhost", 4321, 100);
    LOG.info("================ Finished loading TSO 2 ==================");

    // Wait till the master TSO is up
    barrierTillTSOAddressPublication.await();
    currentTSOZNode.close();

    // Configure HBase TM
    LOG.info("===================== Starting TM =====================");
    HBaseOmidClientConfiguration hbaseOmidClientConf = new HBaseOmidClientConfiguration();
    hbaseOmidClientConf.setConnectionType(HA);
    hbaseOmidClientConf.setConnectionString(zkConnection);
    hbaseOmidClientConf.getOmidClientConfiguration().setZkCurrentTsoPath(CURRENT_TSO_PATH);
    hbaseOmidClientConf.getOmidClientConfiguration().setZkNamespace(NAMESPACE);
    hbaseOmidClientConf.setHBaseConfiguration(hbaseConf);
    hbaseConf.setInt(HBASE_CLIENT_RETRIES_NUMBER, 3);
    tm = HBaseTransactionManager.builder(hbaseOmidClientConf).build();
    LOG.info("===================== TM Started =========================");
}