use of com.linkedin.d2.balancer.clients.RewriteClient in project rest.li by linkedin.
the class RewriteClientTestStreamRequest method testWithQueryAndFragment.
@Test
public void testWithQueryAndFragment() {
URI uri = URI.create("http://test.linkedin.com/test");
String serviceName = "HistoryService";
TestClient wrappedClient = new TestClient();
RewriteClient client = new RewriteClient(serviceName, uri, wrappedClient);
assertEquals(client.getUri(), uri);
assertEquals(client.getServiceName(), serviceName);
assertEquals(client.getWrappedClient(), wrappedClient);
StreamRequest streamRequest = getRequest("d2://HistoryService/getCube?bar=baz#fragId");
Map<String, String> restWireAttrs = new HashMap<String, String>();
TestTransportCallback<StreamResponse> restCallback = new TestTransportCallback<StreamResponse>();
client.streamRequest(streamRequest, new RequestContext(), restWireAttrs, restCallback);
assertFalse(restCallback.response.hasError());
assertEquals(wrappedClient.streamRequest.getHeaders(), streamRequest.getHeaders());
assertEquals(wrappedClient.streamRequest.getMethod(), streamRequest.getMethod());
assertEquals(wrappedClient.streamRequest.getURI(), URI.create("http://test.linkedin.com/test/getCube?bar=baz#fragId"));
}
use of com.linkedin.d2.balancer.clients.RewriteClient in project rest.li by linkedin.
the class SimpleLoadBalancerTest method testLoadBalancerSmoke.
@Test(groups = { "small", "back-end" })
public void testLoadBalancerSmoke() throws URISyntaxException, ServiceUnavailableException, InterruptedException, ExecutionException {
for (int tryAgain = 0; tryAgain < 1000; ++tryAgain) {
Map<String, LoadBalancerStrategyFactory<? extends LoadBalancerStrategy>> loadBalancerStrategyFactories = new HashMap<String, LoadBalancerStrategyFactory<? extends LoadBalancerStrategy>>();
Map<String, TransportClientFactory> clientFactories = new HashMap<String, TransportClientFactory>();
List<String> prioritizedSchemes = new ArrayList<String>();
MockStore<ServiceProperties> serviceRegistry = new MockStore<ServiceProperties>();
MockStore<ClusterProperties> clusterRegistry = new MockStore<ClusterProperties>();
MockStore<UriProperties> uriRegistry = new MockStore<UriProperties>();
ScheduledExecutorService executorService = new SynchronousExecutorService();
//loadBalancerStrategyFactories.put("rr", new RandomLoadBalancerStrategyFactory());
loadBalancerStrategyFactories.put("degrader", new DegraderLoadBalancerStrategyFactoryV3());
// PrpcClientFactory();
// new
clientFactories.put("http", new DoNothingClientFactory());
// HttpClientFactory();
SimpleLoadBalancerState state = new SimpleLoadBalancerState(executorService, uriRegistry, clusterRegistry, serviceRegistry, clientFactories, loadBalancerStrategyFactories);
SimpleLoadBalancer loadBalancer = new SimpleLoadBalancer(state, 5, TimeUnit.SECONDS);
FutureCallback<None> balancerCallback = new FutureCallback<None>();
loadBalancer.start(balancerCallback);
balancerCallback.get();
URI uri1 = URI.create("http://test.qa1.com:1234");
URI uri2 = URI.create("http://test.qa2.com:2345");
URI uri3 = URI.create("http://test.qa3.com:6789");
Map<Integer, PartitionData> partitionData = new HashMap<Integer, PartitionData>(1);
partitionData.put(DefaultPartitionAccessor.DEFAULT_PARTITION_ID, new PartitionData(1d));
Map<URI, Map<Integer, PartitionData>> uriData = new HashMap<URI, Map<Integer, PartitionData>>(3);
uriData.put(uri1, partitionData);
uriData.put(uri2, partitionData);
uriData.put(uri3, partitionData);
prioritizedSchemes.add("http");
clusterRegistry.put("cluster-1", new ClusterProperties("cluster-1"));
serviceRegistry.put("foo", new ServiceProperties("foo", "cluster-1", "/foo", Arrays.asList("degrader"), Collections.<String, Object>emptyMap(), null, null, prioritizedSchemes, null));
uriRegistry.put("cluster-1", new UriProperties("cluster-1", uriData));
URI expectedUri1 = URI.create("http://test.qa1.com:1234/foo");
URI expectedUri2 = URI.create("http://test.qa2.com:2345/foo");
URI expectedUri3 = URI.create("http://test.qa3.com:6789/foo");
Set<URI> expectedUris = new HashSet<URI>();
expectedUris.add(expectedUri1);
expectedUris.add(expectedUri2);
expectedUris.add(expectedUri3);
for (int i = 0; i < 100; ++i) {
RewriteClient client = (RewriteClient) loadBalancer.getClient(new URIRequest("d2://foo/52"), new RequestContext());
assertTrue(expectedUris.contains(client.getUri()));
assertEquals(client.getUri().getScheme(), "http");
}
final CountDownLatch latch = new CountDownLatch(1);
PropertyEventShutdownCallback callback = new PropertyEventShutdownCallback() {
@Override
public void done() {
latch.countDown();
}
};
state.shutdown(callback);
if (!latch.await(60, TimeUnit.SECONDS)) {
fail("unable to shutdown state");
}
executorService.shutdownNow();
assertTrue(executorService.isShutdown(), "ExecutorService should have shut down!");
}
}
use of com.linkedin.d2.balancer.clients.RewriteClient in project rest.li by linkedin.
the class SimpleLoadBalancerTest method testLoadBalancerDropRate.
/**
* This test simulates dropping requests by playing with OverrideDropRate in config
*
*/
@Test(groups = { "small", "back-end" })
public void testLoadBalancerDropRate() throws ServiceUnavailableException, ExecutionException, InterruptedException {
final int RETRY = 10;
for (int tryAgain = 0; tryAgain < RETRY; ++tryAgain) {
Map<String, LoadBalancerStrategyFactory<? extends LoadBalancerStrategy>> loadBalancerStrategyFactories = new HashMap<String, LoadBalancerStrategyFactory<? extends LoadBalancerStrategy>>();
Map<String, TransportClientFactory> clientFactories = new HashMap<String, TransportClientFactory>();
List<String> prioritizedSchemes = new ArrayList<String>();
MockStore<ServiceProperties> serviceRegistry = new MockStore<ServiceProperties>();
MockStore<ClusterProperties> clusterRegistry = new MockStore<ClusterProperties>();
MockStore<UriProperties> uriRegistry = new MockStore<UriProperties>();
ScheduledExecutorService executorService = new SynchronousExecutorService();
//loadBalancerStrategyFactories.put("rr", new RandomLoadBalancerStrategyFactory());
loadBalancerStrategyFactories.put("degrader", new DegraderLoadBalancerStrategyFactoryV3());
// PrpcClientFactory();
// new
clientFactories.put("http", new DoNothingClientFactory());
// HttpClientFactory();
SimpleLoadBalancerState state = new SimpleLoadBalancerState(executorService, uriRegistry, clusterRegistry, serviceRegistry, clientFactories, loadBalancerStrategyFactories);
SimpleLoadBalancer loadBalancer = new SimpleLoadBalancer(state, 5, TimeUnit.SECONDS);
FutureCallback<None> balancerCallback = new FutureCallback<None>();
loadBalancer.start(balancerCallback);
balancerCallback.get();
URI uri1 = URI.create("http://test.qa1.com:1234");
URI uri2 = URI.create("http://test.qa2.com:2345");
URI uri3 = URI.create("http://test.qa3.com:6789");
Map<Integer, PartitionData> partitionData = new HashMap<Integer, PartitionData>(1);
partitionData.put(DefaultPartitionAccessor.DEFAULT_PARTITION_ID, new PartitionData(1d));
Map<URI, Map<Integer, PartitionData>> uriData = new HashMap<URI, Map<Integer, PartitionData>>(3);
uriData.put(uri1, partitionData);
uriData.put(uri2, partitionData);
uriData.put(uri3, partitionData);
prioritizedSchemes.add("http");
clusterRegistry.put("cluster-1", new ClusterProperties("cluster-1"));
serviceRegistry.put("foo", new ServiceProperties("foo", "cluster-1", "/foo", Arrays.asList("degrader"), Collections.<String, Object>emptyMap(), null, null, prioritizedSchemes, null));
uriRegistry.put("cluster-1", new UriProperties("cluster-1", uriData));
URI expectedUri1 = URI.create("http://test.qa1.com:1234/foo");
URI expectedUri2 = URI.create("http://test.qa2.com:2345/foo");
URI expectedUri3 = URI.create("http://test.qa3.com:6789/foo");
Set<URI> expectedUris = new HashSet<URI>();
expectedUris.add(expectedUri1);
expectedUris.add(expectedUri2);
expectedUris.add(expectedUri3);
Random random = new Random();
for (int i = 0; i < 100; ++i) {
try {
RewriteClient client = (RewriteClient) loadBalancer.getClient(new URIRequest("d2://foo/52"), new RequestContext());
TrackerClient tClient = (TrackerClient) client.getWrappedClient();
DegraderImpl degrader = (DegraderImpl) tClient.getDegrader(DefaultPartitionAccessor.DEFAULT_PARTITION_ID);
DegraderImpl.Config cfg = new DegraderImpl.Config(degrader.getConfig());
// Change DropRate to 0.0 at the rate of 1/3
cfg.setOverrideDropRate((random.nextInt(2) == 0) ? 1.0 : 0.0);
degrader.setConfig(cfg);
assertTrue(expectedUris.contains(client.getUri()));
assertEquals(client.getUri().getScheme(), "http");
} catch (ServiceUnavailableException e) {
assertTrue(e.toString().contains("in a bad state (high latency/high error)"));
}
}
final CountDownLatch latch = new CountDownLatch(1);
PropertyEventShutdownCallback callback = new PropertyEventShutdownCallback() {
@Override
public void done() {
latch.countDown();
}
};
state.shutdown(callback);
if (!latch.await(60, TimeUnit.SECONDS)) {
fail("unable to shutdown state");
}
executorService.shutdownNow();
assertTrue(executorService.isShutdown(), "ExecutorService should have shut down!");
}
}
use of com.linkedin.d2.balancer.clients.RewriteClient in project rest.li by linkedin.
the class SimpleLoadBalancerTest method testLoadBalancerWithPartitionsSmoke.
// load balancer working with partitioned cluster
@Test(groups = { "small", "back-end" })
public void testLoadBalancerWithPartitionsSmoke() throws URISyntaxException, ServiceUnavailableException, InterruptedException, ExecutionException {
for (int tryAgain = 0; tryAgain < 12; ++tryAgain) {
Map<String, LoadBalancerStrategyFactory<? extends LoadBalancerStrategy>> loadBalancerStrategyFactories = new HashMap<String, LoadBalancerStrategyFactory<? extends LoadBalancerStrategy>>();
Map<String, TransportClientFactory> clientFactories = new HashMap<String, TransportClientFactory>();
List<String> prioritizedSchemes = new ArrayList<String>();
MockStore<ServiceProperties> serviceRegistry = new MockStore<ServiceProperties>();
MockStore<ClusterProperties> clusterRegistry = new MockStore<ClusterProperties>();
MockStore<UriProperties> uriRegistry = new MockStore<UriProperties>();
ScheduledExecutorService executorService = Executors.newSingleThreadScheduledExecutor();
loadBalancerStrategyFactories.put("degrader", new DegraderLoadBalancerStrategyFactoryV3());
clientFactories.put("http", new DoNothingClientFactory());
SimpleLoadBalancerState state = new SimpleLoadBalancerState(executorService, uriRegistry, clusterRegistry, serviceRegistry, clientFactories, loadBalancerStrategyFactories);
SimpleLoadBalancer loadBalancer = new SimpleLoadBalancer(state, 5, TimeUnit.SECONDS);
FutureCallback<None> balancerCallback = new FutureCallback<None>();
loadBalancer.start(balancerCallback);
balancerCallback.get();
URI uri1 = URI.create("http://test.qa1.com:1234");
URI uri2 = URI.create("http://test.qa2.com:2345");
URI uri3 = URI.create("http://test.qa3.com:6789");
Map<URI, Double> uris = new HashMap<URI, Double>();
uris.put(uri1, 1d);
uris.put(uri2, 1d);
uris.put(uri3, 1d);
Map<URI, Map<Integer, PartitionData>> partitionDesc = new HashMap<URI, Map<Integer, PartitionData>>();
Map<Integer, PartitionData> server1 = new HashMap<Integer, PartitionData>();
server1.put(0, new PartitionData(1d));
server1.put(1, new PartitionData(1d));
Map<Integer, PartitionData> server2 = new HashMap<Integer, PartitionData>();
server2.put(0, new PartitionData(1d));
Map<Integer, PartitionData> server3 = new HashMap<Integer, PartitionData>();
server3.put(1, new PartitionData(1d));
partitionDesc.put(uri1, server1);
partitionDesc.put(uri2, server2);
partitionDesc.put(uri3, server3);
prioritizedSchemes.add("http");
int partitionMethod = tryAgain % 4;
switch(partitionMethod) {
case 0:
clusterRegistry.put("cluster-1", new ClusterProperties("cluster-1", null, new HashMap<String, String>(), new HashSet<URI>(), new RangeBasedPartitionProperties("id=(\\d+)", 0, 50, 2)));
break;
case 1:
clusterRegistry.put("cluster-1", new ClusterProperties("cluster-1", null, new HashMap<String, String>(), new HashSet<URI>(), new HashBasedPartitionProperties("id=(\\d+)", 2, HashBasedPartitionProperties.HashAlgorithm.valueOf("MODULO"))));
break;
case 2:
clusterRegistry.put("cluster-1", new ClusterProperties("cluster-1", null, new HashMap<String, String>(), new HashSet<URI>(), new HashBasedPartitionProperties("id=(\\d+)", 2, HashBasedPartitionProperties.HashAlgorithm.valueOf("MD5"))));
break;
case 3:
// test getRings with gap. here, no server serves partition 2
clusterRegistry.put("cluster-1", new ClusterProperties("cluster-1", null, new HashMap<String, String>(), new HashSet<URI>(), new RangeBasedPartitionProperties("id=(\\d+)", 0, 50, 4)));
server3.put(3, new PartitionData(1d));
partitionDesc.put(uri3, server3);
break;
default:
break;
}
serviceRegistry.put("foo", new ServiceProperties("foo", "cluster-1", "/foo", Arrays.asList("degrader"), Collections.<String, Object>emptyMap(), null, null, prioritizedSchemes, null));
uriRegistry.put("cluster-1", new UriProperties("cluster-1", partitionDesc));
if (partitionMethod == 3) {
Map<Integer, Ring<URI>> ringMap = loadBalancer.getRings(URI.create("d2://foo"));
assertEquals(ringMap.size(), 4);
// the ring for partition 2 should be empty
assertEquals(ringMap.get(2).toString(), new ConsistentHashRing<URI>(Collections.emptyList()).toString());
continue;
}
URI expectedUri1 = URI.create("http://test.qa1.com:1234/foo");
URI expectedUri2 = URI.create("http://test.qa2.com:2345/foo");
URI expectedUri3 = URI.create("http://test.qa3.com:6789/foo");
Set<URI> expectedUris = new HashSet<URI>();
expectedUris.add(expectedUri1);
expectedUris.add(expectedUri2);
expectedUris.add(expectedUri3);
for (int i = 0; i < 1000; ++i) {
int ii = i % 100;
RewriteClient client = (RewriteClient) loadBalancer.getClient(new URIRequest("d2://foo/id=" + ii), new RequestContext());
String clientUri = client.getUri().toString();
HashFunction<String[]> hashFunction = null;
String[] str = new String[1];
// test KeyMapper target host hint: request is always to target host regardless of what's in d2 URI and whether it's hash-based or range-based partitions
RequestContext requestContextWithHint = new RequestContext();
KeyMapper.TargetHostHints.setRequestContextTargetHost(requestContextWithHint, uri1);
RewriteClient hintedClient1 = (RewriteClient) loadBalancer.getClient(new URIRequest("d2://foo/id=" + ii), requestContextWithHint);
String hintedUri1 = hintedClient1.getUri().toString();
Assert.assertEquals(hintedUri1, uri1.toString() + "/foo");
RewriteClient hintedClient2 = (RewriteClient) loadBalancer.getClient(new URIRequest("d2://foo/action=purge-all"), requestContextWithHint);
String hintedUri2 = hintedClient2.getUri().toString();
Assert.assertEquals(hintedUri2, uri1.toString() + "/foo");
if (partitionMethod == 2) {
hashFunction = new MD5Hash();
}
for (URI uri : expectedUris) {
if (clientUri.contains(uri.toString())) {
// check if only key belonging to partition 0 gets uri2
if (uri.equals(uri2)) {
if (partitionMethod == 0) {
assertTrue(ii < 50);
} else if (partitionMethod == 1) {
assertTrue(ii % 2 == 0);
} else {
str[0] = ii + "";
assertTrue(hashFunction.hash(str) % 2 == 0);
}
}
// check if only key belonging to partition 1 gets uri3
if (uri.equals(uri3)) {
if (partitionMethod == 0) {
assertTrue(ii >= 50);
} else if (partitionMethod == 1) {
assertTrue(ii % 2 == 1);
} else {
str[0] = ii + "";
assertTrue(hashFunction.hash(str) % 2 == 1);
}
}
}
}
}
// two rings for two partitions
Map<Integer, Ring<URI>> ringMap = loadBalancer.getRings(URI.create("d2://foo"));
assertEquals(ringMap.size(), 2);
if (partitionMethod != 2) {
Set<String> keys = new HashSet<String>();
for (int j = 0; j < 50; j++) {
if (partitionMethod == 0) {
keys.add(j + "");
} else {
keys.add(j * 2 + "");
}
}
// if it is range based partition, all keys from 0 ~ 49 belong to partition 0 according to the range definition
// if it is modulo based partition, all even keys belong to partition 0 because the partition count is 2
// only from partition 0
MapKeyResult<Ring<URI>, String> mapKeyResult = loadBalancer.getRings(URI.create("d2://foo"), keys);
Map<Ring<URI>, Collection<String>> keyToPartition = mapKeyResult.getMapResult();
assertEquals(keyToPartition.size(), 1);
for (Ring<URI> ring : keyToPartition.keySet()) {
assertEquals(ring, ringMap.get(0));
}
// now also from partition 1
keys.add("51");
mapKeyResult = loadBalancer.getRings(URI.create("d2://foo"), keys);
assertEquals(mapKeyResult.getMapResult().size(), 2);
assertEquals(mapKeyResult.getUnmappedKeys().size(), 0);
// now only from partition 1
keys.clear();
keys.add("99");
mapKeyResult = loadBalancer.getRings(URI.create("d2://foo"), keys);
keyToPartition = mapKeyResult.getMapResult();
assertEquals(keyToPartition.size(), 1);
assertEquals(mapKeyResult.getUnmappedKeys().size(), 0);
for (Ring<URI> ring : keyToPartition.keySet()) {
assertEquals(ring, ringMap.get(1));
}
keys.add("100");
mapKeyResult = loadBalancer.getRings(URI.create("d2://foo"), keys);
if (partitionMethod == 0) {
// key out of range
Collection<MapKeyResult.UnmappedKey<String>> unmappedKeys = mapKeyResult.getUnmappedKeys();
assertEquals(unmappedKeys.size(), 1);
}
try {
loadBalancer.getClient(new URIRequest("d2://foo/id=100"), new RequestContext());
if (partitionMethod == 0) {
// key out of range
fail("Should throw ServiceUnavailableException caused by PartitionAccessException");
}
} catch (ServiceUnavailableException e) {
}
}
final CountDownLatch latch = new CountDownLatch(1);
PropertyEventShutdownCallback callback = new PropertyEventShutdownCallback() {
@Override
public void done() {
latch.countDown();
}
};
state.shutdown(callback);
if (!latch.await(60, TimeUnit.SECONDS)) {
fail("unable to shutdown state");
}
executorService.shutdownNow();
assertTrue(executorService.isShutdown(), "ExecutorService should have shut down!");
}
}
use of com.linkedin.d2.balancer.clients.RewriteClient in project rest.li by linkedin.
the class RewriteClientTest method testWithEverything.
@Test
public void testWithEverything() {
URI uri = URI.create("http://username:password@test.linkedin.com:9876/test");
String serviceName = "HistoryService";
TestClient wrappedClient = new TestClient();
RewriteClient client = new RewriteClient(serviceName, uri, wrappedClient);
assertEquals(client.getUri(), uri);
assertEquals(client.getServiceName(), serviceName);
assertEquals(client.getWrappedClient(), wrappedClient);
RestRequest restRequest = new RestRequestBuilder(URI.create("d2://HistoryService/getCube?bar=baz#fragId")).build();
Map<String, String> restWireAttrs = new HashMap<String, String>();
TestTransportCallback<RestResponse> restCallback = new TestTransportCallback<RestResponse>();
client.restRequest(restRequest, new RequestContext(), restWireAttrs, restCallback);
assertFalse(restCallback.response.hasError());
assertEquals(wrappedClient.restRequest.getHeaders(), restRequest.getHeaders());
assertEquals(wrappedClient.restRequest.getEntity(), restRequest.getEntity());
assertEquals(wrappedClient.restRequest.getMethod(), restRequest.getMethod());
assertEquals(wrappedClient.restRequest.getURI(), URI.create("http://username:password@test.linkedin.com:9876/test/getCube?bar=baz#fragId"));
}
Aggregations