本文整理汇总了Java中org.apache.curator.framework.recipes.cache.NodeCache.getCurrentData方法的典型用法代码示例。如果您正苦于以下问题：Java NodeCache.getCurrentData方法的具体用法？Java NodeCache.getCurrentData怎么用？Java NodeCache.getCurrentData使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.curator.framework.recipes.cache.NodeCache的用法示例。
在下文中一共展示了NodeCache.getCurrentData方法的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: onNodeChanged
import org.apache.curator.framework.recipes.cache.NodeCache; //导入方法依赖的package包/类
public void onNodeChanged(final NodeCache cache, final ConfigDescriptor desc)
{
ChildData childData = cache.getCurrentData();
try {
Optional<String> valueOpt = Optional.empty();
if (childData != null && childData.getData() != null && childData.getData().length > 0) {
valueOpt = Optional.of(new String(childData.getData(), Charsets.UTF_8));
}
emitEvent(desc.getConfigName(), valueOpt);
}
catch (Exception ex) {
log.warn("Failed to handle onNodeChanged w/ new data for config key {}, data {}", desc.getConfigName(), childData, ex);
}
}
示例2: processNodeData
import org.apache.curator.framework.recipes.cache.NodeCache; //导入方法依赖的package包/类
private Map<String, String> processNodeData(String path, NodeCache nodeCache) {
ChildData currentData = nodeCache.getCurrentData();
if (currentData == null) {
throw new RuntimeException(String.format("node of path: %s do not exists", path));
}
String currentDataStr = new String(currentData.getData());
logger.info("current data is : {}", currentDataStr);
List<String> strings = Splitter.on("=").splitToList(currentDataStr);
Map<String, String> map = Maps.newHashMap();
map.put(strings.get(0), strings.get(1));
return map;
}
示例3: get
import org.apache.curator.framework.recipes.cache.NodeCache; //导入方法依赖的package包/类
public T get() {
checkClosed();
if (resource == null) {
if (zkNodeExists == NOT_EXISTS) { // for performance, short circuit it outside sync block.
return emptyObject;
}
synchronized (lock) {
checkClosed();
if (resource == null) {
NodeCache cache = nodeCache.get();
tryAddListener(cache);
ChildData currentData = cache.getCurrentData();
if (currentData == null || currentData.getData() == null) {
zkNodeExists = NOT_EXISTS;
if (!emptyLogged) { // 只在刚开始一次或者几次打印这个log
logger.warn("found no zk path for:{}, using empty data:{}", path(cache),
emptyObject);
emptyLogged = true;
}
return emptyObject;
}
zkNodeExists = EXISTS;
try {
resource = factory.apply(currentData.getData(), currentData.getStat());
if (onResourceChange != null) {
onResourceChange.accept(resource, emptyObject);
}
} catch (Exception e) {
factoryFailedListener.accept(e);
throwIfUnchecked(e);
throw new RuntimeException(e);
}
}
}
}
return resource;
}
示例4: tryAddListener
import org.apache.curator.framework.recipes.cache.NodeCache; //导入方法依赖的package包/类
private void tryAddListener(NodeCache cache) {
if (!hasAddListener) {
NodeCacheListener nodeCacheListener = () -> {
T oldResource;
synchronized (lock) {
ChildData data = cache.getCurrentData();
oldResource = resource;
if (data != null && data.getData() != null) {
zkNodeExists = EXISTS;
ListenableFuture<T> future = refreshFactory.apply(data.getData(),
data.getStat());
addCallback(future, new FutureCallback<T>() {
@Override
public void onSuccess(@Nullable T result) {
resource = result;
cleanup(resource, oldResource, cache);
}
@Override
public void onFailure(Throwable t) {
factoryFailedListener.accept(t);
logger.error("", t);
}
}, directExecutor());
} else {
zkNodeExists = NOT_EXISTS;
resource = null;
emptyLogged = false;
cleanup(resource, oldResource, cache);
}
}
};
cache.getListenable().addListener(nodeCacheListener);
nodeCacheRemoveListener = () -> cache.getListenable().removeListener(nodeCacheListener);
hasAddListener = true;
}
}
示例5: addListener
import org.apache.curator.framework.recipes.cache.NodeCache; //导入方法依赖的package包/类
private static void addListener(final NodeCache cache) {
// a PathChildrenCacheListener is optional. Here, it's used just to log
// changes
NodeCacheListener listener = new NodeCacheListener() {
@Override
public void nodeChanged() throws Exception {
if (cache.getCurrentData() != null)
System.out.println("Node changed: " + cache.getCurrentData().getPath() + ", value: " + new String(cache.getCurrentData().getData()));
}
};
cache.getListenable().addListener(listener);
}
示例6: onChange
import org.apache.curator.framework.recipes.cache.NodeCache; //导入方法依赖的package包/类
@Override
public void onChange(final CuratorFramework curator, final NodeCache cache, final String path)
{
logger.debug("Config change ..");
if (cache.getCurrentData() == null) {
logger.warn("Empty config data ..");
}
final ChildData eData = cache.getCurrentData();
final String data = eData != null ? new String(eData.getData()) : null;
final Configuration newConfig = data != null ? serializer.fromJson(data) : new Configuration();
final Configuration oldConfig = reference.get() != null ? reference.get() : new Configuration();
if (newConfig == null) {
logger.warn(String.format("Ignoring entity for path '%s', It cannot be NULL", path));
return;
}
if (newConfig.equals(oldConfig)) {
logger.debug(String.format("No changes detected..."));
return;
}
logger.debug("Apply configuration : " + newConfig);
reference.set(newConfig);
dispatcher.dispatchEvents(newConfig, oldConfig);
}
示例7: show
import org.apache.curator.framework.recipes.cache.NodeCache; //导入方法依赖的package包/类
private static void show(NodeCache cache) {
if (cache.getCurrentData() != null)
System.out.println(cache.getCurrentData().getPath() + " = " + new String(cache.getCurrentData().getData()));
else
System.out.println("cache don't set a value");
}