@Test
public void testNamespace() throws Exception {
Timing timing = new Timing();
ChildReaper reaper = null;
CuratorFramework client =
CuratorFrameworkFactory.builder()
.connectString(server.getConnectString())
.sessionTimeoutMs(timing.session())
.connectionTimeoutMs(timing.connection())
.retryPolicy(new RetryOneTime(1))
.namespace("foo")
.build();
try {
client.start();
for (int i = 0; i < 10; ++i) {
client.create().creatingParentsIfNeeded().forPath("/test/" + Integer.toString(i));
}
reaper = new ChildReaper(client, "/test", Reaper.Mode.REAP_UNTIL_DELETE, 1);
reaper.start();
timing.forWaiting().sleepABit();
Stat stat = client.checkExists().forPath("/test");
Assert.assertEquals(stat.getNumChildren(), 0);
stat = client.usingNamespace(null).checkExists().forPath("/foo/test");
Assert.assertNotNull(stat);
Assert.assertEquals(stat.getNumChildren(), 0);
} finally {
Closeables.closeQuietly(reaper);
Closeables.closeQuietly(client);
}
}
@Test
public void testSomeNodes() throws Exception {
Timing timing = new Timing();
ChildReaper reaper = null;
CuratorFramework client =
CuratorFrameworkFactory.newClient(
server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1));
try {
client.start();
Random r = new Random();
int nonEmptyNodes = 0;
for (int i = 0; i < 10; ++i) {
client.create().creatingParentsIfNeeded().forPath("/test/" + Integer.toString(i));
if (r.nextBoolean()) {
client.create().forPath("/test/" + Integer.toString(i) + "/foo");
++nonEmptyNodes;
}
}
reaper = new ChildReaper(client, "/test", Reaper.Mode.REAP_UNTIL_DELETE, 1);
reaper.start();
timing.forWaiting().sleepABit();
Stat stat = client.checkExists().forPath("/test");
Assert.assertEquals(stat.getNumChildren(), nonEmptyNodes);
} finally {
Closeables.closeQuietly(reaper);
Closeables.closeQuietly(client);
}
}
@Override
public long count() {
try {
Stat stat = zkConnection.getClient().checkExists().forPath(Paths.STREAMS);
return stat == null ? 0 : stat.getNumChildren();
} catch (Exception e) {
throw ZooKeeperUtils.wrapThrowable(e);
}
}
public static void copyStat(Stat from, Stat to) {
to.setAversion(from.getAversion());
to.setCtime(from.getCtime());
to.setCversion(from.getCversion());
to.setCzxid(from.getCzxid());
to.setMtime(from.getMtime());
to.setMzxid(from.getMzxid());
to.setPzxid(from.getPzxid());
to.setVersion(from.getVersion());
to.setEphemeralOwner(from.getEphemeralOwner());
to.setDataLength(from.getDataLength());
to.setNumChildren(from.getNumChildren());
}
public Long getNextProcessId(Long channelId, Long pipelineId) {
String processRoot = ManagePathUtils.getProcessRoot(channelId, pipelineId);
IZkConnection connection = zookeeper.getConnection();
// zkclient会将获取stat信息和正常的操作分开，使用原生的zk进行优化
ZooKeeper orginZk = ((ZooKeeperx) connection).getZookeeper();
Stat processParentStat = new Stat();
// 获取所有的process列表
try {
orginZk.getChildren(processRoot, false, processParentStat);
return (Long) ((processParentStat.getCversion() + processParentStat.getNumChildren()) / 2L);
} catch (Exception e) {
return -1L;
}
}
public int size() throws KeeperException, InterruptedException {
Stat stat = new Stat();
zookeeper.getData(dir, null, stat, true);
return stat.getNumChildren();
}