@Test
public void testSyncSet() {
String className = TestHelper.getTestClassName();
String methodName = TestHelper.getTestMethodName();
String testName = className + "_" + methodName;
System.out.println("START " + testName + " at " + new Date(System.currentTimeMillis()));
String path = String.format("/%s/%s", testName, "msg_0");
ZNRecord record = new ZNRecord("msg_0");
BaseDataAccessor<ZNRecord> accessor = new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
boolean success = accessor.set(path, record, AccessOption.PERSISTENT);
Assert.assertTrue(success);
ZNRecord getRecord = _gZkClient.readData(path);
Assert.assertNotNull(getRecord);
Assert.assertEquals(getRecord.getId(), "msg_0");
System.out.println("END " + testName + " at " + new Date(System.currentTimeMillis()));
}
@Test
public void testSyncSetWithVersion() {
String className = TestHelper.getTestClassName();
String methodName = TestHelper.getTestMethodName();
String testName = className + "_" + methodName;
System.out.println("START " + testName + " at " + new Date(System.currentTimeMillis()));
String path = String.format("/%s/%s", testName, "msg_0");
ZNRecord record = new ZNRecord("msg_0");
BaseDataAccessor<ZNRecord> accessor = new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
// set persistent
boolean success = accessor.set(path, record, 0, AccessOption.PERSISTENT);
Assert.assertFalse(success, "Should fail since version not match");
try {
_gZkClient.readData(path, false);
Assert.fail("Should get no node exception");
} catch (Exception e) {
// OK
}
success = accessor.set(path, record, -1, AccessOption.PERSISTENT);
Assert.assertTrue(success);
ZNRecord getRecord = _gZkClient.readData(path);
Assert.assertNotNull(getRecord);
Assert.assertEquals(getRecord.getId(), "msg_0");
// set ephemeral
path = String.format("/%s/%s", testName, "msg_1");
record = new ZNRecord("msg_1");
success = accessor.set(path, record, 0, AccessOption.EPHEMERAL);
Assert.assertFalse(success);
try {
_gZkClient.readData(path, false);
Assert.fail("Should get no node exception");
} catch (Exception e) {
// OK
}
success = accessor.set(path, record, -1, AccessOption.EPHEMERAL);
Assert.assertTrue(success);
getRecord = _gZkClient.readData(path);
Assert.assertNotNull(getRecord);
Assert.assertEquals(getRecord.getId(), "msg_1");
record.setSimpleField("key0", "value0");
success = accessor.set(path, record, 0, AccessOption.PERSISTENT);
Assert.assertTrue(success, "Should pass. AccessOption.PERSISTENT is ignored");
getRecord = _gZkClient.readData(path);
Assert.assertNotNull(getRecord);
Assert.assertEquals(getRecord.getSimpleFields().size(), 1);
Assert.assertNotNull(getRecord.getSimpleField("key0"));
Assert.assertEquals(getRecord.getSimpleField("key0"), "value0");
System.out.println("END " + testName + " at " + new Date(System.currentTimeMillis()));
}
@Override
public void handleNewSession() throws Exception {
waitUntilConnected();
/**
* stop all timer tasks, reset all handlers, make sure cleanup completed for previous session
* disconnect if fail to cleanup
*/
stopTimerTasks();
if (_leaderElectionHandler != null) {
_leaderElectionHandler.reset();
}
resetHandlers();
/** clean up write-through cache */
_baseDataAccessor.reset();
/** from here on, we are dealing with new session */
if (!ZKUtil.isClusterSetup(_clusterName, _zkclient)) {
throw new HelixException("Cluster structure is not set up for cluster: " + _clusterName);
}
switch (_instanceType) {
case PARTICIPANT:
handleNewSessionAsParticipant();
break;
case CONTROLLER:
handleNewSessionAsController();
break;
case CONTROLLER_PARTICIPANT:
handleNewSessionAsParticipant();
handleNewSessionAsController();
break;
case ADMINISTRATOR:
case SPECTATOR:
default:
break;
}
startTimerTasks();
/**
* init handlers ok to init message handler and data-accessor twice the second init will be
* skipped (see CallbackHandler)
*/
initHandlers(_handlers);
}