本文整理汇总了Java中org.apache.cassandra.service.StorageService.onChange方法的典型用法代码示例。如果您正苦于以下问题：Java StorageService.onChange方法的具体用法？Java StorageService.onChange怎么用？Java StorageService.onChange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.cassandra.service.StorageService的用法示例。
在下文中一共展示了StorageService.onChange方法的3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: createInitialRing
import org.apache.cassandra.service.StorageService; //导入方法依赖的package包/类
/**
* Creates initial set of nodes and tokens. Nodes are added to StorageService as 'normal'
*/
public static void createInitialRing(StorageService ss, IPartitioner partitioner, List<Token> endpointTokens,
List<Token> keyTokens, List<InetAddress> hosts, List<UUID> hostIds, int howMany)
throws UnknownHostException
{
// Expand pool of host IDs as necessary
for (int i = hostIdPool.size(); i < howMany; i++)
hostIdPool.add(UUID.randomUUID());
for (int i=0; i<howMany; i++)
{
endpointTokens.add(new BigIntegerToken(String.valueOf(10 * i)));
keyTokens.add(new BigIntegerToken(String.valueOf(10 * i + 5)));
hostIds.add(hostIdPool.get(i));
}
for (int i=0; i<endpointTokens.size(); i++)
{
InetAddress ep = InetAddress.getByName("127.0.0." + String.valueOf(i + 1));
Gossiper.instance.initializeNodeUnsafe(ep, hostIds.get(i), 1);
Gossiper.instance.injectApplicationState(ep, ApplicationState.TOKENS, new VersionedValue.VersionedValueFactory(partitioner).tokens(Collections.singleton(endpointTokens.get(i))));
ss.onChange(ep,
ApplicationState.STATUS,
new VersionedValue.VersionedValueFactory(partitioner).normal(Collections.singleton(endpointTokens.get(i))));
hosts.add(ep);
}
// check that all nodes are in token metadata
for (int i=0; i<endpointTokens.size(); ++i)
assertTrue(ss.getTokenMetadata().isMember(hosts.get(i)));
}
示例2: createInitialRing
import org.apache.cassandra.service.StorageService; //导入方法依赖的package包/类
/**
* Creates initial set of nodes and tokens. Nodes are added to StorageService as 'normal'
*/
public static void createInitialRing(StorageService ss, IPartitioner partitioner, List<Token> endpointTokens,
List<Token> keyTokens, List<InetAddress> hosts, List<UUID> hostIds, int howMany)
throws UnknownHostException
{
// Expand pool of host IDs as necessary
for (int i = hostIdPool.size(); i < howMany; i++)
hostIdPool.add(UUID.randomUUID());
boolean endpointTokenPrefilled = endpointTokens != null && !endpointTokens.isEmpty();
for (int i=0; i<howMany; i++)
{
if(!endpointTokenPrefilled)
endpointTokens.add(new BigIntegerToken(String.valueOf(10 * i)));
keyTokens.add(new BigIntegerToken(String.valueOf(10 * i + 5)));
hostIds.add(hostIdPool.get(i));
}
for (int i=0; i<endpointTokens.size(); i++)
{
InetAddress ep = InetAddress.getByName("127.0.0." + String.valueOf(i + 1));
Gossiper.instance.initializeNodeUnsafe(ep, hostIds.get(i), 1);
Gossiper.instance.injectApplicationState(ep, ApplicationState.TOKENS, new VersionedValue.VersionedValueFactory(partitioner).tokens(Collections.singleton(endpointTokens.get(i))));
ss.onChange(ep,
ApplicationState.STATUS,
new VersionedValue.VersionedValueFactory(partitioner).normal(Collections.singleton(endpointTokens.get(i))));
hosts.add(ep);
}
// check that all nodes are in token metadata
for (int i=0; i<endpointTokens.size(); ++i)
assertTrue(ss.getTokenMetadata().isMember(hosts.get(i)));
}
示例3: testConvictAfterLeft
import org.apache.cassandra.service.StorageService; //导入方法依赖的package包/类
@Test
public void testConvictAfterLeft() throws UnknownHostException
{
StorageService ss = StorageService.instance;
TokenMetadata tmd = ss.getTokenMetadata();
tmd.clearUnsafe();
IPartitioner partitioner = new RandomPartitioner();
VersionedValue.VersionedValueFactory valueFactory = new VersionedValue.VersionedValueFactory(partitioner);
ArrayList<Token> endpointTokens = new ArrayList<>();
ArrayList<Token> keyTokens = new ArrayList<>();
List<InetAddress> hosts = new ArrayList<>();
List<UUID> hostIds = new ArrayList<>();
// we want to convict if there is any heartbeat data present in the FD
DatabaseDescriptor.setPhiConvictThreshold(0);
// create a ring of 2 nodes
Util.createInitialRing(ss, partitioner, endpointTokens, keyTokens, hosts, hostIds, 3);
InetAddress leftHost = hosts.get(1);
FailureDetector.instance.report(leftHost);
// trigger handleStateLeft in StorageService
ss.onChange(leftHost, ApplicationState.STATUS,
valueFactory.left(Collections.singleton(endpointTokens.get(1)), Gossiper.computeExpireTime()));
// confirm that handleStateLeft was called and leftEndpoint was removed from TokenMetadata
assertFalse("Left endpoint not removed from TokenMetadata", tmd.isMember(leftHost));
// confirm the FD's history for leftHost didn't get wiped by status jump to LEFT
FailureDetector.instance.interpret(leftHost);
assertFalse("Left endpoint not convicted", FailureDetector.instance.isAlive(leftHost));
}