本文整理汇总了Java中org.apache.curator.framework.recipes.atomic.DistributedAtomicLong类的典型用法代码示例。如果您正苦于以下问题：Java DistributedAtomicLong类的具体用法？Java DistributedAtomicLong怎么用？Java DistributedAtomicLong使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
DistributedAtomicLong类属于org.apache.curator.framework.recipes.atomic包，在下文中一共展示了DistributedAtomicLong类的15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: increment
import org.apache.curator.framework.recipes.atomic.DistributedAtomicLong; //导入依赖的package包/类
public void increment() throws Exception {
int tempoMaximoDeTentativasMilissegundos = 1000;
int intervaloEntreTentativasMilissegundos = 100;
try {
RetryPolicy rp = new RetryUntilElapsed(tempoMaximoDeTentativasMilissegundos,
intervaloEntreTentativasMilissegundos);
this.counter = new DistributedAtomicLong(this.client,
this.counterPath,
rp);
logger.debug("## INCREMENT WILL BEGIN");
if (this.counter.get().succeeded()) {
logger.debug("## INCREMENT GET COUNTER (BEFORE): " + this.counter.get().postValue());
if(this.counter.increment().succeeded()) {
logger.debug("## INCREMENT COUNTER AFTER: " + this.counter.get().postValue());
}
}
this.counter.increment();
}
catch(Exception ex) {
logger.error("********* INCREMENT COUNTER ERROR: " + ex.getMessage());
}
}
示例2: main
import org.apache.curator.framework.recipes.atomic.DistributedAtomicLong; //导入依赖的package包/类
public static void main(String[] args) throws IOException, Exception {
try (TestingServer server = new TestingServer()) {
CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new ExponentialBackoffRetry(1000, 3));
client.start();
List<DistributedAtomicLong> examples = Lists.newArrayList();
ExecutorService service = Executors.newFixedThreadPool(QTY);
for (int i = 0; i < QTY; ++i) {
final DistributedAtomicLong count = new DistributedAtomicLong(client, PATH, new RetryNTimes(10, 10));
examples.add(count);
Callable<Void> task = new Callable<Void>() {
@Override
public Void call() throws Exception {
try {
//Thread.sleep(rand.nextInt(1000));
AtomicValue<Long> value = count.increment();
//AtomicValue<Long> value = count.decrement();
//AtomicValue<Long> value = count.add((long)rand.nextInt(20));
System.out.println("succeed: " + value.succeeded());
if (value.succeeded())
System.out.println("Increment: from " + value.preValue() + " to " + value.postValue());
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
};
service.submit(task);
}
service.shutdown();
service.awaitTermination(10, TimeUnit.MINUTES);
}
}
示例3: ExponentialBackoffRetry
import org.apache.curator.framework.recipes.atomic.DistributedAtomicLong; //导入依赖的package包/类
private Cluster$(String connectString) {
RetryPolicy policy = new ExponentialBackoffRetry(10000, 5) ;
try {
client = CuratorFrameworkFactory.builder()
/*.namespace(namespace)*/
.connectString(connectString)
.retryPolicy(policy)
.build() ;
client.start() ;
client.blockUntilConnected() ;
}
catch (Exception e) {
log.error("Failed: "+connectString, e) ;
client = null ;
}
ensure(ClusterCtl.namespace) ;
ensure(ClusterCtl.members) ;
active.set(true) ;
globalCounter = new DistributedAtomicLong(client,"/COUNTER", policy) ;
try {
log.info("/COUNTER = "+globalCounter.get().postValue());
} catch (Exception ex) {}
globalWriteLock = new InterProcessSemaphoreMutex(client, "/WriteLock") ;
}
示例4: nextId
import org.apache.curator.framework.recipes.atomic.DistributedAtomicLong; //导入依赖的package包/类
/**
* {@inheritDoc}
*/
@Override
public long nextId(final String namespace) {
final String[] paths = calcPathIdAndPathLock(namespace);
final String pathId = paths[0];
final String pathLock = paths[1];
RetryPolicy retryPolicyMutex = new BoundedExponentialBackoffRetry(10, 1000, 5);
PromotedToLock promotedToLock = PromotedToLock.builder().retryPolicy(retryPolicyMutex)
.lockPath(pathLock).build();
RetryPolicy retryPolicyOptimistic = new RetryNTimes(3, 100);
DistributedAtomicLong dal = new DistributedAtomicLong(curatorFramework, pathId,
retryPolicyOptimistic, promotedToLock);
semaphore.acquireUninterruptibly();
try {
AtomicValue<Long> value = dal.increment();
if (value != null && value.succeeded()) {
return value.postValue();
}
return -1;
} catch (Exception e) {
throw e instanceof IdException ? (IdException) e : new IdException(e);
} finally {
semaphore.release();
}
}
示例5: currentId
import org.apache.curator.framework.recipes.atomic.DistributedAtomicLong; //导入依赖的package包/类
/**
* {@inheritDoc}
*/
@Override
public long currentId(final String namespace) {
final String[] paths = calcPathIdAndPathLock(namespace);
final String pathId = paths[0];
final String pathLock = paths[1];
RetryPolicy retryPolicyMutex = new BoundedExponentialBackoffRetry(10, 1000, 5);
PromotedToLock promotedToLock = PromotedToLock.builder().retryPolicy(retryPolicyMutex)
.lockPath(pathLock).build();
RetryPolicy retryPolicyOptimistic = new RetryNTimes(3, 100);
DistributedAtomicLong dal = new DistributedAtomicLong(curatorFramework, pathId,
retryPolicyOptimistic, promotedToLock);
try {
AtomicValue<Long> value = dal.get();
if (value != null && value.succeeded()) {
return value.postValue();
}
throw new IdException("Operation was not successful!");
} catch (Exception e) {
throw e instanceof IdException ? (IdException) e : new IdException(e);
}
}
示例6: readCounter
import org.apache.curator.framework.recipes.atomic.DistributedAtomicLong; //导入依赖的package包/类
/**
* Read the count for this dataset and counterName.
*
* @param datasetUuid the dataset key
* @param counterName the counterName representing a processing phase
*
* @return the count or null if it could not be read
*/
@Nullable
public Long readCounter(UUID datasetUuid, CounterName counterName) {
checkNotNull(datasetUuid);
checkNotNull(counterName);
Long result = null;
try {
String path = CRAWL_PREFIX + datasetUuid.toString() + counterName.getPath();
LOG.debug("Reading DAL at path [{}]", path);
curator.newNamespaceAwareEnsurePath(path).ensure(curator.getZookeeperClient());
DistributedAtomicLong dal = new DistributedAtomicLong(curator, path, new RetryNTimes(1, 1000));
result = dal.get().preValue();
} catch (Exception e) {
LOG.warn("Error reading from zookeeper", e);
}
return result;
}
示例7: currentValueFromZk
import org.apache.curator.framework.recipes.atomic.DistributedAtomicLong; //导入依赖的package包/类
/**
* 获得ZK中的当前值,如果不存在，抛出异常
* @param path
* @return
* @throws Exception
*/
private long currentValueFromZk (String path) throws Exception {
if (isExists(path)) {
DistributedAtomicLong count = new DistributedAtomicLong(client, path, new RetryNTimes(10, 1000));
AtomicValue<Long> val = count.get();
return val.postValue();
} else {
throw new RuntimeException("Path is not existed! Call nextValue firstly!");
}
}
示例8: getIncrementValue
import org.apache.curator.framework.recipes.atomic.DistributedAtomicLong; //导入依赖的package包/类
/**
* 获得分布式自增变量
* @param path
* @return
* @throws Exception
*/
public Long getIncrementValue(String path) throws Exception {
DistributedAtomicLong atomicId = new DistributedAtomicLong(client, path, new RetryNTimes(32,1000));
AtomicValue<Long> rc = atomicId.get();
if (rc.succeeded()) {
logger.debug("getIncrementValue({}) success! get: {}.", path, rc.postValue());
} else {
logger.warn("getIncrementValue({}) failed! get: {}.", path, rc.postValue());
}
return rc.postValue();
}
示例9: incrementAndGetValue
import org.apache.curator.framework.recipes.atomic.DistributedAtomicLong; //导入依赖的package包/类
/**
* 自增并获得，自增后的变量
* @param path
* @return
* @throws Exception
*/
public Long incrementAndGetValue(String path) throws Exception {
DistributedAtomicLong atomicId = new DistributedAtomicLong(client, path, new RetryNTimes(32,1000));
AtomicValue<Long> rc = atomicId.increment();
if (rc.succeeded()) {
logger.info("incrementAndGetValue({}) success! before: {}, after: {}.", path, rc.preValue(), rc.postValue());
} else {
logger.warn("incrementAndGetValue({}) failed! before: {}, after: {}.", path, rc.preValue(), rc.postValue());
}
return rc.postValue();
}
示例10: addInSync
import org.apache.curator.framework.recipes.atomic.DistributedAtomicLong; //导入依赖的package包/类
private static void addInSync(String path, long delta){
try {
ZKPaths.mkdirs(CURATOR_FRAMEWORK.getZookeeperClient().getZooKeeper(), path);
COUNTERS.putIfAbsent(path, new DistributedAtomicLong(CURATOR_FRAMEWORK, path, RETRY_N_TIMES));
DistributedAtomicLong counter = COUNTERS.get(path);
AtomicValue<Long> returnValue = counter.add(delta);
while (!returnValue.succeeded()) {
returnValue = counter.add(delta);
}
}catch (Exception e){
LOGGER.error("addInSync "+delta+" failed for "+path, e);
}
}
示例11: subtract
import org.apache.curator.framework.recipes.atomic.DistributedAtomicLong; //导入依赖的package包/类
private static void subtract(String path, long delta){
try {
ZKPaths.mkdirs(CURATOR_FRAMEWORK.getZookeeperClient().getZooKeeper(), path);
COUNTERS.putIfAbsent(path, new DistributedAtomicLong(CURATOR_FRAMEWORK, path, RETRY_N_TIMES));
DistributedAtomicLong counter = COUNTERS.get(path);
AtomicValue<Long> returnValue = counter.subtract(delta);
while (!returnValue.succeeded()) {
returnValue = counter.subtract(delta);
}
}catch (Exception e){
LOGGER.error("subtract "+delta+" failed for "+path, e);
}
}
示例12: getValue
import org.apache.curator.framework.recipes.atomic.DistributedAtomicLong; //导入依赖的package包/类
public static long getValue(String path) {
try {
DistributedAtomicLong dal = new DistributedAtomicLong(CURATOR_FRAMEWORK, path, RETRY_N_TIMES);
return dal.get().postValue();
}catch (Exception e){
LOGGER.error("get counter exception: "+path, e);
}
return -1;
}
示例13: ZKTimestampStorage
import org.apache.curator.framework.recipes.atomic.DistributedAtomicLong; //导入依赖的package包/类
@Inject
public ZKTimestampStorage(CuratorFramework zkClient) throws Exception {
LOG.info("ZK Client state {}", zkClient.getState());
timestamp = new DistributedAtomicLong(zkClient, TIMESTAMP_ZNODE, new RetryNTimes(3, 1000)); // TODO Configure
// this?
if (timestamp.initialize(INITIAL_MAX_TS_VALUE)) {
LOG.info("Timestamp value in ZNode initialized to {}", INITIAL_MAX_TS_VALUE);
}
}
示例14: createAtomicCounter
import org.apache.curator.framework.recipes.atomic.DistributedAtomicLong; //导入依赖的package包/类
@Override
public DistributedAtomicLong createAtomicCounter(String path) {
MockAtomicCounter counter = atomicCounters.get(path);
if (counter == null) {
counter = new MockAtomicCounter(path);
atomicCounters.put(path, counter);
}
return counter;
}
示例15: testCounter
import org.apache.curator.framework.recipes.atomic.DistributedAtomicLong; //导入依赖的package包/类
@Test
public void testCounter() throws Exception {
DistributedAtomicLong counter = new MockCurator().createAtomicCounter("/mycounter");
counter.initialize(4l);
assertEquals(4l, counter.get().postValue().longValue());
assertEquals(5l, counter.increment().postValue().longValue());
}