void doEvaluate(Statement base) throws Throwable {
try {
cluster = new TestingCluster(3);
cluster.start();
client = newClient(cluster.getConnectString(), new RetryOneTime(200 /* ms */));
client.start();
checkState(
client.blockUntilConnected(5, TimeUnit.SECONDS),
"failed to connect to zookeeper in 5 seconds");
base.evaluate();
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new IllegalStateException("Interrupted while connecting to ZooKeeper", e);
} finally {
client.close();
cluster.close();
}
}
@Test
public void testRun() throws Exception {
TestingCluster localCluster = new TestingCluster(1);
localCluster.start();
CuratorFramework localCf =
CuratorFrameworkFactory.builder()
.connectString(localCluster.getConnectString())
.retryPolicy(new ExponentialBackoffRetry(1, 10))
.compressionProvider(new PotentiallyGzippedCompressionProvider(false))
.build();
localCf.start();
TestingCluster remoteCluster = new TestingCluster(1);
remoteCluster.start();
CuratorFramework remoteCf =
CuratorFrameworkFactory.builder()
.connectString(remoteCluster.getConnectString())
.retryPolicy(new ExponentialBackoffRetry(1, 10))
.compressionProvider(new PotentiallyGzippedCompressionProvider(false))
.build();
remoteCf.start();
ObjectMapper jsonMapper = new DefaultObjectMapper();
DruidClusterBridgeConfig config =
new DruidClusterBridgeConfig() {
@Override
public String getTier() {
return DruidServer.DEFAULT_TIER;
}
@Override
public Duration getStartDelay() {
return new Duration(0);
}
@Override
public Duration getPeriod() {
return new Duration(Long.MAX_VALUE);
}
@Override
public String getBrokerServiceName() {
return "testz0rz";
}
@Override
public int getPriority() {
return 0;
}
};
ScheduledExecutorFactory factory = ScheduledExecutors.createFactory(new Lifecycle());
DruidNode me = new DruidNode("me", "localhost", 8080);
AtomicReference<LeaderLatch> leaderLatch =
new AtomicReference<>(new LeaderLatch(localCf, "test"));
ZkPathsConfig zkPathsConfig =
new ZkPathsConfig() {
@Override
public String getZkBasePath() {
return "/druid";
}
};
DruidServerMetadata metadata =
new DruidServerMetadata("test", "localhost", 1000, "bridge", DruidServer.DEFAULT_TIER, 0);
DbSegmentPublisher dbSegmentPublisher = EasyMock.createMock(DbSegmentPublisher.class);
EasyMock.replay(dbSegmentPublisher);
DatabaseSegmentManager databaseSegmentManager =
EasyMock.createMock(DatabaseSegmentManager.class);
EasyMock.replay(databaseSegmentManager);
ServerView serverView = EasyMock.createMock(ServerView.class);
EasyMock.replay(serverView);
BridgeZkCoordinator bridgeZkCoordinator =
new BridgeZkCoordinator(
jsonMapper,
zkPathsConfig,
new SegmentLoaderConfig(),
metadata,
remoteCf,
dbSegmentPublisher,
databaseSegmentManager,
serverView);
Announcer announcer = new Announcer(remoteCf, Executors.newSingleThreadExecutor());
announcer.start();
announcer.announce(
zkPathsConfig.getAnnouncementsPath() + "/" + me.getHost(),
jsonMapper.writeValueAsBytes(me));
BatchDataSegmentAnnouncer batchDataSegmentAnnouncer =
EasyMock.createMock(BatchDataSegmentAnnouncer.class);
BatchServerInventoryView batchServerInventoryView =
EasyMock.createMock(BatchServerInventoryView.class);
EasyMock.expect(batchServerInventoryView.getInventory())
.andReturn(
Arrays.asList(
new DruidServer("1", "localhost", 117, "historical", DruidServer.DEFAULT_TIER, 0),
new DruidServer("2", "localhost", 1, "historical", DruidServer.DEFAULT_TIER, 0)));
batchServerInventoryView.registerSegmentCallback(
EasyMock.<Executor>anyObject(), EasyMock.<ServerView.SegmentCallback>anyObject());
batchServerInventoryView.registerServerCallback(
EasyMock.<Executor>anyObject(), EasyMock.<ServerView.ServerCallback>anyObject());
EasyMock.expectLastCall();
batchServerInventoryView.start();
EasyMock.expectLastCall();
batchServerInventoryView.stop();
EasyMock.expectLastCall();
EasyMock.replay(batchServerInventoryView);
DruidClusterBridge bridge =
new DruidClusterBridge(
jsonMapper,
config,
factory,
me,
localCf,
leaderLatch,
bridgeZkCoordinator,
announcer,
batchDataSegmentAnnouncer,
batchServerInventoryView);
bridge.start();
int retry = 0;
while (!bridge.isLeader()) {
if (retry > 5) {
throw new ISE("Unable to become leader");
}
Thread.sleep(100);
retry++;
}
String path = "/druid/announcements/localhost:8080";
retry = 0;
while (remoteCf.checkExists().forPath(path) == null) {
if (retry > 5) {
throw new ISE("Unable to announce");
}
Thread.sleep(100);
retry++;
}
boolean verified = verifyUpdate(jsonMapper, path, remoteCf);
retry = 0;
while (!verified) {
if (retry > 5) {
throw new ISE("No updates to bridge node occurred");
}
Thread.sleep(100);
retry++;
verified = verifyUpdate(jsonMapper, path, remoteCf);
}
announcer.stop();
bridge.stop();
remoteCf.close();
remoteCluster.close();
localCf.close();
localCluster.close();
EasyMock.verify(batchServerInventoryView);
EasyMock.verify(dbSegmentPublisher);
EasyMock.verify(databaseSegmentManager);
EasyMock.verify(serverView);
}