Examples with PartitionedLoadBalancerTestState com.linkedin.d2.balancer.PartitionedLoadBalancerTestState used on opensource projects

Example 1 with PartitionedLoadBalancerTestState

use of com.linkedin.d2.balancer.PartitionedLoadBalancerTestState in project rest.li by linkedin.

the class RetryClientTest method prepareLoadBalancer.

public SimpleLoadBalancer prepareLoadBalancer(List<String> uris) throws URISyntaxException {
    String serviceName = "retryService";
    String clusterName = "cluster";
    String path = "";
    String strategyName = "degrader";
    // setup partition
    Map<URI, Map<Integer, PartitionData>> partitionDescriptions = new HashMap<URI, Map<Integer, PartitionData>>();
    for (String uri : uris) {
        final URI foo = URI.create(uri);
        Map<Integer, PartitionData> foo1Data = new HashMap<Integer, PartitionData>();
        foo1Data.put(0, new PartitionData(1.0));
        partitionDescriptions.put(foo, foo1Data);
    }
    DegraderLoadBalancerStrategyV3 strategy = new DegraderLoadBalancerStrategyV3(new DegraderLoadBalancerStrategyConfig(5000), serviceName, null);
    List<LoadBalancerState.SchemeStrategyPair> orderedStrategies = new ArrayList<LoadBalancerState.SchemeStrategyPair>();
    orderedStrategies.add(new LoadBalancerState.SchemeStrategyPair("http", strategy));
    PartitionAccessor accessor = new TestRetryPartitionAccessor();
    SimpleLoadBalancer balancer = new SimpleLoadBalancer(new PartitionedLoadBalancerTestState(clusterName, serviceName, path, strategyName, partitionDescriptions, orderedStrategies, accessor));
    return balancer;
}

Example 2 with PartitionedLoadBalancerTestState

use of com.linkedin.d2.balancer.PartitionedLoadBalancerTestState in project rest.li by linkedin.

the class SimpleLoadBalancerTest method testGetPartitionInfoOrdering.

/**
   * This tests the getPartitionInfo() when given a collection of keys (actually a test for KeyMapper.mapKeysV3()).
   */
@Test
public void testGetPartitionInfoOrdering() throws Exception {
    String serviceName = "articles";
    String clusterName = "cluster";
    String path = "path";
    String strategyName = "degrader";
    // setup 3 partitions. Partition 1 and Partition 2 both have server1 - server3. Partition 3 only has server1.
    Map<URI, Map<Integer, PartitionData>> partitionDescriptions = new HashMap<URI, Map<Integer, PartitionData>>();
    final URI server1 = new URI("http://foo1.com");
    Map<Integer, PartitionData> server1Data = new HashMap<Integer, PartitionData>();
    server1Data.put(1, new PartitionData(1.0));
    server1Data.put(2, new PartitionData(1.0));
    server1Data.put(3, new PartitionData(1.0));
    partitionDescriptions.put(server1, server1Data);
    final URI server2 = new URI("http://foo2.com");
    Map<Integer, PartitionData> server2Data = new HashMap<Integer, PartitionData>();
    server2Data.put(1, new PartitionData(1.0));
    server2Data.put(2, new PartitionData(1.0));
    partitionDescriptions.put(server2, server2Data);
    final URI server3 = new URI("http://foo3.com");
    Map<Integer, PartitionData> server3Data = new HashMap<Integer, PartitionData>();
    server3Data.put(1, new PartitionData(1.0));
    server3Data.put(2, new PartitionData(1.0));
    partitionDescriptions.put(server3, server3Data);
    //setup strategy which involves tweaking the hash ring to get partitionId -> URI host
    List<LoadBalancerState.SchemeStrategyPair> orderedStrategies = new ArrayList<LoadBalancerState.SchemeStrategyPair>();
    LoadBalancerStrategy strategy = new TestLoadBalancerStrategy(partitionDescriptions);
    orderedStrategies.add(new LoadBalancerState.SchemeStrategyPair("http", strategy));
    //setup the partition accessor which can only map keys from 1 - 3.
    PartitionAccessor accessor = new TestPartitionAccessor();
    URI serviceURI = new URI("d2://" + serviceName);
    SimpleLoadBalancer balancer = new SimpleLoadBalancer(new PartitionedLoadBalancerTestState(clusterName, serviceName, path, strategyName, partitionDescriptions, orderedStrategies, accessor));
    List<Integer> keys = new ArrayList<Integer>();
    keys.add(1);
    keys.add(2);
    keys.add(3);
    keys.add(123);
    HostToKeyMapper<Integer> result = balancer.getPartitionInformation(serviceURI, keys, 3, 123);
    Assert.assertEquals(result.getLimitHostPerPartition(), 3);
    Assert.assertEquals(1, result.getUnmappedKeys().size());
    Assert.assertEquals(123, (int) result.getUnmappedKeys().iterator().next().getKey());
    //partition 0 should be null
    Assert.assertNull(result.getPartitionInfoMap().get(0));
    // results for partition 1 should contain server1, server2 and server3
    KeysAndHosts<Integer> keysAndHosts1 = result.getPartitionInfoMap().get(1);
    Assert.assertTrue(keysAndHosts1.getKeys().size() == 1);
    Assert.assertTrue(keysAndHosts1.getKeys().iterator().next() == 1);
    List<URI> ordering1 = keysAndHosts1.getHosts();
    // results for partition 2 should be the same as partition1.
    KeysAndHosts<Integer> keysAndHosts2 = result.getPartitionInfoMap().get(2);
    Assert.assertTrue(keysAndHosts2.getKeys().size() == 1);
    Assert.assertTrue(keysAndHosts2.getKeys().iterator().next() == 2);
    List<URI> ordering2 = keysAndHosts2.getHosts();
    //for partition 3
    KeysAndHosts<Integer> keysAndHosts3 = result.getPartitionInfoMap().get(3);
    Assert.assertTrue(keysAndHosts3.getKeys().size() == 1);
    Assert.assertTrue(keysAndHosts3.getKeys().iterator().next() == 3);
    List<URI> ordering3 = keysAndHosts3.getHosts();
    // Just compare the size and contents of the list, not the ordering.
    Assert.assertTrue(ordering1.size() == 3);
    List<URI> allServers = new ArrayList<>();
    allServers.add(server1);
    allServers.add(server2);
    allServers.add(server3);
    Assert.assertTrue(ordering1.containsAll(allServers));
    Assert.assertTrue(ordering2.containsAll(allServers));
    Assert.assertEquals(ordering1, ordering2);
    Assert.assertEquals(ordering3.get(0), server1);
    Assert.assertTrue(result.getPartitionsWithoutEnoughHosts().containsKey(3));
    Assert.assertEquals((int) result.getPartitionsWithoutEnoughHosts().get(3), 2);
}

Example 3 with PartitionedLoadBalancerTestState

use of com.linkedin.d2.balancer.PartitionedLoadBalancerTestState in project rest.li by linkedin.

the class SimpleLoadBalancerTest method testGetAllPartitionMultipleHostsOrdering.

/**
   * This tests the getPartitionInfo() when keys are null (actually a test for KeyMapper.getAllPartitionMultipleHosts()).
   */
@Test
public void testGetAllPartitionMultipleHostsOrdering() throws Exception {
    String serviceName = "articles";
    String clusterName = "cluster";
    String path = "path";
    String strategyName = "degrader";
    //setup partition
    Map<URI, Map<Integer, PartitionData>> partitionDescriptions = new HashMap<URI, Map<Integer, PartitionData>>();
    final URI server1 = new URI("http://foo1.com");
    Map<Integer, PartitionData> server1Data = new HashMap<Integer, PartitionData>();
    server1Data.put(1, new PartitionData(1.0));
    server1Data.put(2, new PartitionData(1.0));
    server1Data.put(3, new PartitionData(1.0));
    partitionDescriptions.put(server1, server1Data);
    final URI server2 = new URI("http://foo2.com");
    Map<Integer, PartitionData> server2Data = new HashMap<Integer, PartitionData>();
    server2Data.put(1, new PartitionData(1.0));
    server2Data.put(2, new PartitionData(1.0));
    //server2Data.put(3, new PartitionData(1.0));
    partitionDescriptions.put(server2, server2Data);
    final URI server3 = new URI("http://foo3.com");
    Map<Integer, PartitionData> server3Data = new HashMap<Integer, PartitionData>();
    server3Data.put(1, new PartitionData(1.0));
    server3Data.put(2, new PartitionData(1.0));
    //server3Data.put(3, new PartitionData(1.0));
    partitionDescriptions.put(server3, server3Data);
    //setup strategy which involves tweaking the hash ring to get partitionId -> URI host
    List<LoadBalancerState.SchemeStrategyPair> orderedStrategies = new ArrayList<LoadBalancerState.SchemeStrategyPair>();
    LoadBalancerStrategy strategy = new TestLoadBalancerStrategy(partitionDescriptions);
    orderedStrategies.add(new LoadBalancerState.SchemeStrategyPair("http", strategy));
    //setup the partition accessor which is used to get partitionId -> keys
    PartitionAccessor accessor = new TestPartitionAccessor();
    URI serviceURI = new URI("d2://" + serviceName);
    SimpleLoadBalancer balancer = new SimpleLoadBalancer(new PartitionedLoadBalancerTestState(clusterName, serviceName, path, strategyName, partitionDescriptions, orderedStrategies, accessor));
    HostToKeyMapper<URI> result = balancer.getPartitionInformation(serviceURI, null, 3, 123);
    Assert.assertEquals(result.getPartitionInfoMap().size(), 4);
    Assert.assertEquals(4, result.getPartitionCount());
    // partition 0 should be empty
    Assert.assertTrue(result.getPartitionInfoMap().get(0).getHosts().isEmpty());
    // partition 1 should have server1, server2 and server3.
    List<URI> ordering1 = result.getPartitionInfoMap().get(1).getHosts();
    List<URI> allServers = new ArrayList<>();
    allServers.add(server1);
    allServers.add(server2);
    allServers.add(server3);
    Assert.assertTrue(ordering1.size() == 3);
    Assert.assertTrue(ordering1.containsAll(allServers));
    // partition 2 should be the same as partition 1
    List<URI> ordering2 = result.getPartitionInfoMap().get(2).getHosts();
    Assert.assertEquals(ordering1, ordering2);
    // partition 3 should only contain server1
    List<URI> ordering3 = result.getPartitionInfoMap().get(3).getHosts();
    Assert.assertEquals(ordering3.get(0), server1);
    // partition 0 and partition 3 should not have enough hosts: lacking 3 and 2 respectively.
    Assert.assertTrue(result.getPartitionsWithoutEnoughHosts().containsKey(3));
    Assert.assertTrue(result.getPartitionsWithoutEnoughHosts().containsKey(0));
    Assert.assertEquals((int) result.getPartitionsWithoutEnoughHosts().get(3), 2);
    Assert.assertEquals((int) result.getPartitionsWithoutEnoughHosts().get(0), 3);
}

Example 4 with PartitionedLoadBalancerTestState

use of com.linkedin.d2.balancer.PartitionedLoadBalancerTestState in project rest.li by linkedin.

the class ConsistentHashKeyMapperTest method getConsistentHashKeyMapper.

private ConsistentHashKeyMapper getConsistentHashKeyMapper(RingFactory<URI> ringFactory) throws URISyntaxException {
    String serviceName = "articles";
    String clusterName = "cluster";
    String path = "path";
    String strategyName = "degrader";
    //setup partition
    Map<URI, Map<Integer, PartitionData>> partitionDescriptions = new HashMap<URI, Map<Integer, PartitionData>>();
    final URI foo1 = new URI("http://foo1.com");
    Map<Integer, PartitionData> foo1Data = new HashMap<Integer, PartitionData>();
    foo1Data.put(0, new PartitionData(1.0));
    partitionDescriptions.put(foo1, foo1Data);
    final URI foo2 = new URI("http://foo2.com");
    Map<Integer, PartitionData> foo2Data = new HashMap<Integer, PartitionData>();
    foo2Data.put(3, new PartitionData(1.0));
    foo2Data.put(4, new PartitionData(1.0));
    partitionDescriptions.put(foo2, foo2Data);
    final URI foo3 = new URI("http://foo3.com");
    Map<Integer, PartitionData> foo3Data = new HashMap<Integer, PartitionData>();
    foo3Data.put(0, new PartitionData(1.0));
    partitionDescriptions.put(foo3, foo3Data);
    final URI foo4 = new URI("http://foo4.com");
    Map<Integer, PartitionData> foo4Data = new HashMap<Integer, PartitionData>();
    foo4Data.put(1, new PartitionData(1.0));
    partitionDescriptions.put(foo4, foo4Data);
    final URI foo5 = new URI("http://foo5.com");
    Map<Integer, PartitionData> foo5Data = new HashMap<Integer, PartitionData>();
    foo5Data.put(1, new PartitionData(1.0));
    partitionDescriptions.put(foo5, foo5Data);
    final URI foo6 = new URI("http://foo6.com");
    Map<Integer, PartitionData> foo6Data = new HashMap<Integer, PartitionData>();
    foo6Data.put(1, new PartitionData(1.0));
    partitionDescriptions.put(foo6, foo6Data);
    //setup strategy which involves tweaking the hash ring to get partitionId -> URI host
    List<LoadBalancerState.SchemeStrategyPair> orderedStrategies = new ArrayList<LoadBalancerState.SchemeStrategyPair>();
    LoadBalancerStrategy strategy = new TestLoadBalancerStrategy(partitionDescriptions, ringFactory);
    orderedStrategies.add(new LoadBalancerState.SchemeStrategyPair("http", strategy));
    //setup the partition accessor which is used to get partitionId -> keys
    PartitionAccessor accessor = new TestPartitionAccessor();
    URI serviceURI = new URI("d2://" + serviceName);
    SimpleLoadBalancer balancer = new SimpleLoadBalancer(new PartitionedLoadBalancerTestState(clusterName, serviceName, path, strategyName, partitionDescriptions, orderedStrategies, accessor));
    ConsistentHashKeyMapper mapper = new ConsistentHashKeyMapper(balancer, balancer);
    return mapper;
}

Example 5 with PartitionedLoadBalancerTestState

use of com.linkedin.d2.balancer.PartitionedLoadBalancerTestState in project rest.li by linkedin.

the class ConsistentHashKeyMapperTest method testMapKeysConcurrency.

@SuppressWarnings("rawtypes")
@Test
public void testMapKeysConcurrency() throws Exception {
    String serviceName = "articles";
    String clusterName = "cluster";
    String path = "path";
    String strategyName = "degrader";
    int numPartitions = 500;
    // setup partition
    Map<URI, Map<Integer, PartitionData>> partitionDescriptions = new HashMap<URI, Map<Integer, PartitionData>>();
    final URI foo1 = new URI("http://foo1.com");
    Map<Integer, PartitionData> foo1Data = new HashMap<Integer, PartitionData>();
    for (int i = 0; i < numPartitions; i++) {
        foo1Data.put(i, new PartitionData(1.0));
    }
    partitionDescriptions.put(foo1, foo1Data);
    DegraderLoadBalancerStrategyV3 strategy = new DegraderLoadBalancerStrategyV3(new DegraderLoadBalancerStrategyConfig(5000), serviceName, null);
    List<LoadBalancerState.SchemeStrategyPair> orderedStrategies = new ArrayList<LoadBalancerState.SchemeStrategyPair>();
    orderedStrategies.add(new LoadBalancerState.SchemeStrategyPair("http", strategy));
    PartitionAccessor accessor = new TestDeadlockPartitionAccessor(numPartitions);
    SimpleLoadBalancer balancer = new SimpleLoadBalancer(new PartitionedLoadBalancerTestState(clusterName, serviceName, path, strategyName, partitionDescriptions, orderedStrategies, accessor));
    ConsistentHashKeyMapper mapper = new ConsistentHashKeyMapper(balancer, balancer);
    CountDownLatch latch = new CountDownLatch(numPartitions);
    List<Runnable> runnables = createRunnables(numPartitions, mapper, serviceName, latch);
    final ExecutorService executor = Executors.newFixedThreadPool(numPartitions);
    List<Future> futures = new ArrayList<Future>();
    for (int i = 0; i < numPartitions; i++) {
        futures.add(executor.submit(runnables.get(i)));
    }
    for (Future future : futures) {
        future.get(30, TimeUnit.SECONDS);
    }
}