本文整理汇总了Java中org.apache.zookeeper.KeeperException.Code类的典型用法代码示例。如果您正苦于以下问题:Java Code类的具体用法?Java Code怎么用?Java Code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。
Code类属于org.apache.zookeeper.KeeperException包,在下文中一共展示了Code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: getActiveData
import org.apache.zookeeper.KeeperException.Code; //导入依赖的package包/类
/**
* get data set by the active leader
*
* @return data set by the active instance
* @throws ActiveNotFoundException
* when there is no active leader
* @throws KeeperException
* other zookeeper operation errors
* @throws InterruptedException
* @throws IOException
* when ZooKeeper connection could not be established
*/
public synchronized byte[] getActiveData() throws ActiveNotFoundException,
KeeperException, InterruptedException, IOException {
try {
if (zkClient == null) {
createConnection();
}
Stat stat = new Stat();
return getDataWithRetries(zkLockFilePath, false, stat);
} catch(KeeperException e) {
Code code = e.code();
if (isNodeDoesNotExist(code)) {
// handle the commonly expected cases that make sense for us
throw new ActiveNotFoundException();
} else {
throw e;
}
}
}
示例2: waitForZKConnectionEvent
import org.apache.zookeeper.KeeperException.Code; //导入依赖的package包/类
/**
* Waits for the next event from ZooKeeper to arrive.
*
* @param connectionTimeoutMs zookeeper connection timeout in milliseconds
* @throws KeeperException if the connection attempt times out. This will
* be a ZooKeeper ConnectionLoss exception code.
* @throws IOException if interrupted while connecting to ZooKeeper
*/
private void waitForZKConnectionEvent(int connectionTimeoutMs)
throws KeeperException, IOException {
try {
if (!hasReceivedEvent.await(connectionTimeoutMs, TimeUnit.MILLISECONDS)) {
LOG.error("Connection timed out: couldn't connect to ZooKeeper in "
+ connectionTimeoutMs + " milliseconds");
zk.close();
throw KeeperException.create(Code.CONNECTIONLOSS);
}
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new IOException(
"Interrupted when connecting to zookeeper server", e);
}
}
示例3: testQuitElectionRemovesBreadcrumbNode
import org.apache.zookeeper.KeeperException.Code; //导入依赖的package包/类
@Test
public void testQuitElectionRemovesBreadcrumbNode() throws Exception {
mockNoPriorActive();
elector.joinElection(data);
elector.processResult(Code.OK.intValue(), ZK_LOCK_NAME, mockZK,
ZK_LOCK_NAME);
// Writes its own active info
Mockito.verify(mockZK, Mockito.times(1)).create(
Mockito.eq(ZK_BREADCRUMB_NAME), Mockito.eq(data),
Mockito.eq(Ids.OPEN_ACL_UNSAFE),
Mockito.eq(CreateMode.PERSISTENT));
mockPriorActive(data);
elector.quitElection(false);
// Deletes its own active data
Mockito.verify(mockZK, Mockito.times(1)).delete(
Mockito.eq(ZK_BREADCRUMB_NAME), Mockito.eq(0));
}
示例4: testStatNodeRetry
import org.apache.zookeeper.KeeperException.Code; //导入依赖的package包/类
/**
* verify that more than 3 network error retries result fatalError
*/
@Test
public void testStatNodeRetry() {
elector.joinElection(data);
elector.processResult(Code.CONNECTIONLOSS.intValue(), ZK_LOCK_NAME, mockZK,
(Stat) null);
elector.processResult(Code.CONNECTIONLOSS.intValue(), ZK_LOCK_NAME, mockZK,
(Stat) null);
elector.processResult(Code.CONNECTIONLOSS.intValue(), ZK_LOCK_NAME, mockZK,
(Stat) null);
elector.processResult(Code.CONNECTIONLOSS.intValue(), ZK_LOCK_NAME, mockZK,
(Stat) null);
Mockito
.verify(mockApp, Mockito.times(1))
.notifyFatalError(
"Received stat error from Zookeeper. code:CONNECTIONLOSS. "+
"Not retrying further znode monitoring connection errors.");
}
示例5: testNonExistingOpCode
import org.apache.zookeeper.KeeperException.Code; //导入依赖的package包/类
/**
* We create a perfectly valid 'exists' request, except that the opcode is wrong.
* @return
* @throws Exception
*/
@Test
public void testNonExistingOpCode() throws Exception {
TestableZooKeeper zk = createClient();
final String path = "/m1";
RequestHeader h = new RequestHeader();
h.setType(888); // This code does not exists
ExistsRequest request = new ExistsRequest();
request.setPath(path);
request.setWatch(false);
ExistsResponse response = new ExistsResponse();
ReplyHeader r = zk.submitRequest(h, request, response, null);
Assert.assertEquals(r.getErr(), Code.UNIMPLEMENTED.intValue());
try {
zk.exists("/m1", false);
fail("The connection should have been closed");
} catch (KeeperException.ConnectionLossException expected) {
}
}
示例6: createRootDir
import org.apache.zookeeper.KeeperException.Code; //导入依赖的package包/类
private void createRootDir(final String rootPath) throws Exception {
// For root dirs, we shouldn't use the doMulti helper methods
new ZKAction<String>() {
@Override
public String run() throws KeeperException, InterruptedException {
try {
return zkClient.create(rootPath, null, zkAcl, CreateMode.PERSISTENT);
} catch (KeeperException ke) {
if (ke.code() == Code.NODEEXISTS) {
LOG.debug(rootPath + "znode already exists!");
return null;
} else {
throw ke;
}
}
}
}.runWithRetries();
}
示例7: setACL
import org.apache.zookeeper.KeeperException.Code; //导入依赖的package包/类
/**
* Set the ACL for the node of the given path if such a node exists and the
* given aclVersion matches the acl version of the node. Return the stat of the
* node.
* <p>
* A KeeperException with error code KeeperException.NoNode will be thrown
* if no node with the given path exists.
* <p>
* A KeeperException with error code KeeperException.BadVersion will be
* thrown if the given aclVersion does not match the node's aclVersion.
*
* @param path the given path for the node
* @param acl the given acl for the node
* @param aclVersion the given acl version of the node
* @return the stat of the node.
* @throws InterruptedException If the server transaction is interrupted.
* @throws KeeperException If the server signals an error with a non-zero error code.
* @throws org.apache.zookeeper.KeeperException.InvalidACLException If the acl is invalide.
* @throws IllegalArgumentException if an invalid path is specified
*/
public Stat setACL(final String path, List<ACL> acl, int aclVersion)
throws KeeperException, InterruptedException
{
final String clientPath = path;
PathUtils.validatePath(clientPath);
validateACL(acl);
final String serverPath = prependChroot(clientPath);
RequestHeader h = new RequestHeader();
h.setType(ZooDefs.OpCode.setACL);
SetACLRequest request = new SetACLRequest();
request.setPath(serverPath);
request.setAcl(acl);
request.setVersion(aclVersion);
SetACLResponse response = new SetACLResponse();
ReplyHeader r = cnxn.submitRequest(h, request, response, null);
if (r.getErr() != 0) {
throw KeeperException.create(KeeperException.Code.get(r.getErr()),
clientPath);
}
return response.getStat();
}
示例8: removeWatches
import org.apache.zookeeper.KeeperException.Code; //导入依赖的package包/类
private void removeWatches(int opCode, String path, Watcher watcher,
WatcherType watcherType, boolean local)
throws InterruptedException, KeeperException {
PathUtils.validatePath(path);
final String clientPath = path;
final String serverPath = prependChroot(clientPath);
WatchDeregistration wcb = new WatchDeregistration(clientPath, watcher,
watcherType, local, watchManager);
RequestHeader h = new RequestHeader();
h.setType(opCode);
Record request = getRemoveWatchesRequest(opCode, watcherType,
serverPath);
ReplyHeader r = cnxn.submitRequest(h, request, null, null, wcb);
if (r.getErr() != 0) {
throw KeeperException.create(KeeperException.Code.get(r.getErr()),
clientPath);
}
}
示例9: removeWatches
import org.apache.zookeeper.KeeperException.Code; //导入依赖的package包/类
private void removeWatches(ZooKeeper zk, String path, Watcher watcher,
WatcherType watcherType, boolean local, KeeperException.Code rc)
throws InterruptedException, KeeperException {
LOG.info(
"Sending removeWatches req using zk {} path: {} type: {} watcher: {} ",
new Object[] { zk, path, watcherType, watcher });
if (useAsync) {
MyCallback c1 = new MyCallback(rc.intValue(), path);
zk.removeWatches(path, watcher, watcherType, local, c1, null);
Assert.assertTrue("Didn't succeeds removeWatch operation",
c1.matches());
if (KeeperException.Code.OK.intValue() != c1.rc) {
KeeperException ke = KeeperException
.create(KeeperException.Code.get(c1.rc));
throw ke;
}
} else {
zk.removeWatches(path, watcher, watcherType, local);
}
}
示例10: testRemoveAnyChildWatcher
import org.apache.zookeeper.KeeperException.Code; //导入依赖的package包/类
/**
* Test verifies WatcherType.Any - removes only the configured child watcher
* function
*/
@Test(timeout = 90000)
public void testRemoveAnyChildWatcher() throws Exception {
zk1.create("/node1", null, Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
MyWatcher w1 = new MyWatcher("/node1", 2);
MyWatcher w2 = new MyWatcher("/node1", 1);
LOG.info("Adding data watcher {} on path {}", new Object[] { w1,
"/node1" });
Assert.assertNotNull("Didn't set data watches",
zk2.exists("/node1", w1));
// Add multiple child watches
LOG.info("Adding child watcher {} on path {}", new Object[] { w1,
"/node1" });
zk2.getChildren("/node1", w2);
LOG.info("Adding child watcher {} on path {}", new Object[] { w2,
"/node1" });
zk2.getChildren("/node1", w1);
removeWatches(zk2, "/node1", w2, WatcherType.Any, false, Code.OK);
Assert.assertTrue("Didn't remove child watcher", w2.matches());
Assert.assertEquals("Didn't find child watcher", 1, zk2
.getChildWatches().size());
Assert.assertEquals("Didn't find data watcher", 1, zk2
.getDataWatches().size());
removeWatches(zk2, "/node1", w1, WatcherType.Any, false, Code.OK);
Assert.assertTrue("Didn't remove watchers", w1.matches());
}
示例11: testNoWatcherServerException
import org.apache.zookeeper.KeeperException.Code; //导入依赖的package包/类
/**
* Verify that if a given watcher doesn't exist, the server properly
* returns an error code for it.
*
* In our Java client implementation, we check that a given watch exists at
* two points:
*
* 1) before submitting the RemoveWatches request
* 2) after a successful server response, when the watcher needs to be
* removed
*
* Since this can be racy (i.e. a watch can fire while a RemoveWatches
* request is in-flight), we need to verify that the watch was actually
* removed (i.e. from ZKDatabase and DataTree) and return NOWATCHER if
* needed.
*
* Also, other implementations might not do a client side check before
* submitting a RemoveWatches request. If we don't do a server side check,
* we would just return ZOK even if no watch was removed.
*
*/
@Test(timeout = 90000)
public void testNoWatcherServerException()
throws InterruptedException, IOException, TimeoutException {
CountdownWatcher watcher = new CountdownWatcher();
MyZooKeeper zk = new MyZooKeeper(hostPort, CONNECTION_TIMEOUT, watcher);
boolean nw = false;
watcher.waitForConnected(CONNECTION_TIMEOUT);
try {
zk.removeWatches("/nowatchhere", watcher, WatcherType.Data, false);
} catch (KeeperException nwe) {
if (nwe.code().intValue() == Code.NOWATCHER.intValue()) {
nw = true;
}
}
Assert.assertTrue("Server didn't return NOWATCHER",
zk.getRemoveWatchesRC() == Code.NOWATCHER.intValue());
Assert.assertTrue("NoWatcherException didn't happen", nw);
}
示例12: testDeprecatedCodeOkInSwitch
import org.apache.zookeeper.KeeperException.Code; //导入依赖的package包/类
/** Validate that the deprecated constant still works. There were issues
* found with switch statements - which need compile time constants.
*/
@Test
@SuppressWarnings("deprecation")
public void testDeprecatedCodeOkInSwitch() {
int test = 1;
switch (test) {
case Code.Ok:
Assert.assertTrue(true);
break;
}
}
示例13: verifySetACLFailure_BadVersion
import org.apache.zookeeper.KeeperException.Code; //导入依赖的package包/类
public void verifySetACLFailure_BadVersion() {
new StringCB(zk).verifyCreate();
rc = Code.BADVERSION;
stat = null;
zk.setACL(path, acl, version + 1, this, toString());
verify();
}
示例14: testCreateNodeResultBecomeActive
import org.apache.zookeeper.KeeperException.Code; //导入依赖的package包/类
/**
* verify that successful znode create result becomes active and monitoring is
* started
*/
@Test
public void testCreateNodeResultBecomeActive() throws Exception {
mockNoPriorActive();
elector.joinElection(data);
elector.processResult(Code.OK.intValue(), ZK_LOCK_NAME, mockZK,
ZK_LOCK_NAME);
Mockito.verify(mockApp, Mockito.times(1)).becomeActive();
verifyExistCall(1);
// monitor callback verifies the leader is ephemeral owner of lock but does
// not call becomeActive since its already active
Stat stat = new Stat();
stat.setEphemeralOwner(1L);
Mockito.when(mockZK.getSessionId()).thenReturn(1L);
elector.processResult(Code.OK.intValue(), ZK_LOCK_NAME, mockZK, stat);
// should not call neutral mode/standby/active
Mockito.verify(mockApp, Mockito.times(0)).enterNeutralMode();
Mockito.verify(mockApp, Mockito.times(0)).becomeStandby();
Mockito.verify(mockApp, Mockito.times(1)).becomeActive();
// another joinElection not called.
Mockito.verify(mockZK, Mockito.times(1)).create(ZK_LOCK_NAME, data,
Ids.OPEN_ACL_UNSAFE, CreateMode.EPHEMERAL, elector, mockZK);
// no new monitor called
verifyExistCall(1);
}
示例15: testSuccessiveStandbyCalls
import org.apache.zookeeper.KeeperException.Code; //导入依赖的package包/类
/**
* verify becomeStandby is not called if already in standby
*/
@Test
public void testSuccessiveStandbyCalls() {
elector.joinElection(data);
// make the object go into the monitoring standby state
elector.processResult(Code.NODEEXISTS.intValue(), ZK_LOCK_NAME, mockZK,
ZK_LOCK_NAME);
Mockito.verify(mockApp, Mockito.times(1)).becomeStandby();
verifyExistCall(1);
WatchedEvent mockEvent = Mockito.mock(WatchedEvent.class);
Mockito.when(mockEvent.getPath()).thenReturn(ZK_LOCK_NAME);
// notify node deletion
// monitoring should be setup again after event is received
Mockito.when(mockEvent.getType()).thenReturn(Event.EventType.NodeDeleted);
elector.processWatchEvent(mockZK, mockEvent);
// is standby. no need to notify anything now
Mockito.verify(mockApp, Mockito.times(0)).enterNeutralMode();
// another joinElection called.
Mockito.verify(mockZK, Mockito.times(2)).create(ZK_LOCK_NAME, data,
Ids.OPEN_ACL_UNSAFE, CreateMode.EPHEMERAL, elector, mockZK);
// lost election
elector.processResult(Code.NODEEXISTS.intValue(), ZK_LOCK_NAME, mockZK,
ZK_LOCK_NAME);
// still standby. so no need to notify again
Mockito.verify(mockApp, Mockito.times(1)).becomeStandby();
// monitor is set again
verifyExistCall(2);
}