/**
* Tests that one process claims a coordinate, then another process tries to claim the same
* coordinate. The first coordinate looses connection to ZooKeeper and the other process gets the
* coordinate.
*
* @throws Exception
*/
@Test
public void testFastHardRestart() throws Exception {
final Coordinate c = Coordinate.parse("1.service.user.cell");
final CountDownLatch claimLatch1 = new CountDownLatch(1);
forwarderPort = Net.getFreePort();
forwarder = new PortForwarder(forwarderPort, "127.0.0.1", zkport);
Cloudname cn1 =
new ZkCloudname.Builder().setConnectString("localhost:" + forwarderPort).build().connect();
cn1.createCoordinate(c);
ServiceHandle handle1 = cn1.claim(c);
handle1.registerCoordinateListener(
new CoordinateListener() {
@Override
public void onCoordinateEvent(Event event, String message) {
if (event == Event.COORDINATE_OK) {
claimLatch1.countDown();
}
}
});
assertTrue(claimLatch1.await(5, TimeUnit.SECONDS));
Cloudname cn2 =
new ZkCloudname.Builder().setConnectString("localhost:" + zkport).build().connect();
ServiceHandle handle2 = cn2.claim(c);
forwarder.terminate();
assertTrue(handle2.waitForCoordinateOkSeconds(20));
ServiceStatus status = new ServiceStatus(ServiceState.RUNNING, "updated status");
handle2.setStatus(status);
Cloudname cn3 =
new ZkCloudname.Builder().setConnectString("localhost:" + zkport).build().connect();
ServiceStatus statusRetrieved = cn3.getStatus(c);
assertEquals("updated status", statusRetrieved.getMessage());
}
private static void handleCoordinateOperation() {
final Resolver resolver = cloudname.getResolver();
final Coordinate coordinate = Coordinate.parse(coordinateFlag);
switch (operationFlag) {
case CREATE:
try {
cloudname.createCoordinate(coordinate);
} catch (CloudnameException e) {
System.err.println("Got error: " + e.getMessage());
break;
} catch (CoordinateExistsException e) {
e.printStackTrace();
break;
}
System.err.println("Created coordinate.");
break;
case DELETE:
try {
cloudname.destroyCoordinate(coordinate);
} catch (CoordinateDeletionException e) {
System.err.println("Got error: " + e.getMessage());
return;
} catch (CoordinateMissingException e) {
System.err.println("Got error: " + e.getMessage());
break;
} catch (CloudnameException e) {
System.err.println("Got error: " + e.getMessage());
break;
}
System.err.println("Deleted coordinate.");
break;
case STATUS:
{
ServiceStatus status;
try {
status = cloudname.getStatus(coordinate);
} catch (CloudnameException e) {
System.err.println(
"Problems loading status, is service running? Error:\n" + e.getMessage());
break;
}
System.err.println(
"Status:\n" + status.getState().toString() + " " + status.getMessage());
List<Endpoint> endpoints = null;
try {
endpoints =
resolver.resolve(
"all."
+ coordinate.getService()
+ "."
+ coordinate.getUser()
+ "."
+ coordinate.getCell());
} catch (CloudnameException e) {
System.err.println("Got error: " + e.getMessage());
break;
}
System.err.println("Endpoints:");
for (Endpoint endpoint : endpoints) {
if (endpoint.getCoordinate().getInstance() == coordinate.getInstance()) {
System.err.println(
endpoint.getName()
+ "-->"
+ endpoint.getHost()
+ ":"
+ endpoint.getPort()
+ " protocol:"
+ endpoint.getProtocol());
System.err.println("Endpoint data:\n" + endpoint.getEndpointData());
}
}
break;
}
case HOST:
{
List<Endpoint> endpoints = null;
try {
endpoints = resolver.resolve(coordinate.asString());
} catch (CloudnameException e) {
System.err.println(
"Could not resolve " + coordinate.asString() + " Error:\n" + e.getMessage());
break;
}
for (Endpoint endpoint : endpoints) {
System.out.println("Host: " + endpoint.getHost());
}
}
break;
case SET_CONFIG:
try {
cloudname.setConfig(coordinate, configFlag, null);
} catch (CloudnameException e) {
System.err.println("Got error: " + e.getMessage());
break;
} catch (CoordinateMissingException e) {
System.err.println("Non-existing coordinate.");
}
System.err.println("Config updated.");
break;
case READ_CONFIG:
try {
System.out.println("Config is:" + cloudname.getConfig(coordinate));
} catch (CoordinateMissingException e) {
System.err.println("Non-existing coordinate.");
} catch (CloudnameException e) {
System.err.println("Problem with cloudname: " + e.getMessage());
}
break;
default:
System.out.println("Unknown command " + operationFlag);
}
}
