Examples with WeightedTargetConfig io.grpc.xds.WeightedTargetLoadBalancerProvider.WeightedTargetConfig used on opensource projects

Example 1 with WeightedTargetConfig

use of io.grpc.xds.WeightedTargetLoadBalancerProvider.WeightedTargetConfig in project grpc-java by grpc.

the class ClusterImplLoadBalancerTest method subtest_maxConcurrentRequests_appliedByLbConfig.

private void subtest_maxConcurrentRequests_appliedByLbConfig(boolean enableCircuitBreaking) {
    long maxConcurrentRequests = 100L;
    LoadBalancerProvider weightedTargetProvider = new WeightedTargetLoadBalancerProvider();
    WeightedTargetConfig weightedTargetConfig = buildWeightedTargetConfig(ImmutableMap.of(locality, 10));
    ClusterImplConfig config = new ClusterImplConfig(CLUSTER, EDS_SERVICE_NAME, LRS_SERVER_INFO, maxConcurrentRequests, Collections.<DropOverload>emptyList(), new PolicySelection(weightedTargetProvider, weightedTargetConfig), null);
    EquivalentAddressGroup endpoint = makeAddress("endpoint-addr", locality);
    deliverAddressesAndConfig(Collections.singletonList(endpoint), config);
    // one leaf balancer
    assertThat(downstreamBalancers).hasSize(1);
    FakeLoadBalancer leafBalancer = Iterables.getOnlyElement(downstreamBalancers);
    assertThat(leafBalancer.name).isEqualTo("round_robin");
    assertThat(Iterables.getOnlyElement(leafBalancer.addresses).getAddresses()).isEqualTo(endpoint.getAddresses());
    Subchannel subchannel = leafBalancer.helper.createSubchannel(CreateSubchannelArgs.newBuilder().setAddresses(leafBalancer.addresses).build());
    leafBalancer.deliverSubchannelState(subchannel, ConnectivityState.READY);
    assertThat(currentState).isEqualTo(ConnectivityState.READY);
    for (int i = 0; i < maxConcurrentRequests; i++) {
        PickResult result = currentPicker.pickSubchannel(mock(PickSubchannelArgs.class));
        assertThat(result.getStatus().isOk()).isTrue();
        ClientStreamTracer.Factory streamTracerFactory = result.getStreamTracerFactory();
        streamTracerFactory.newClientStreamTracer(ClientStreamTracer.StreamInfo.newBuilder().build(), new Metadata());
    }
    ClusterStats clusterStats = Iterables.getOnlyElement(loadStatsManager.getClusterStatsReports(CLUSTER));
    assertThat(clusterStats.clusterServiceName()).isEqualTo(EDS_SERVICE_NAME);
    assertThat(clusterStats.totalDroppedRequests()).isEqualTo(0L);
    PickResult result = currentPicker.pickSubchannel(mock(PickSubchannelArgs.class));
    clusterStats = Iterables.getOnlyElement(loadStatsManager.getClusterStatsReports(CLUSTER));
    assertThat(clusterStats.clusterServiceName()).isEqualTo(EDS_SERVICE_NAME);
    if (enableCircuitBreaking) {
        assertThat(result.getStatus().isOk()).isFalse();
        assertThat(result.getStatus().getCode()).isEqualTo(Code.UNAVAILABLE);
        assertThat(result.getStatus().getDescription()).isEqualTo("Cluster max concurrent requests limit exceeded");
        assertThat(clusterStats.totalDroppedRequests()).isEqualTo(1L);
    } else {
        assertThat(result.getStatus().isOk()).isTrue();
        assertThat(clusterStats.totalDroppedRequests()).isEqualTo(0L);
    }
    // Config update increments circuit breakers max_concurrent_requests threshold.
    maxConcurrentRequests = 101L;
    config = new ClusterImplConfig(CLUSTER, EDS_SERVICE_NAME, LRS_SERVER_INFO, maxConcurrentRequests, Collections.<DropOverload>emptyList(), new PolicySelection(weightedTargetProvider, weightedTargetConfig), null);
    deliverAddressesAndConfig(Collections.singletonList(endpoint), config);
    result = currentPicker.pickSubchannel(mock(PickSubchannelArgs.class));
    assertThat(result.getStatus().isOk()).isTrue();
    result.getStreamTracerFactory().newClientStreamTracer(ClientStreamTracer.StreamInfo.newBuilder().build(), // 101th request
    new Metadata());
    clusterStats = Iterables.getOnlyElement(loadStatsManager.getClusterStatsReports(CLUSTER));
    assertThat(clusterStats.clusterServiceName()).isEqualTo(EDS_SERVICE_NAME);
    assertThat(clusterStats.totalDroppedRequests()).isEqualTo(0L);
    // 102th request
    result = currentPicker.pickSubchannel(mock(PickSubchannelArgs.class));
    clusterStats = Iterables.getOnlyElement(loadStatsManager.getClusterStatsReports(CLUSTER));
    assertThat(clusterStats.clusterServiceName()).isEqualTo(EDS_SERVICE_NAME);
    if (enableCircuitBreaking) {
        assertThat(result.getStatus().isOk()).isFalse();
        assertThat(result.getStatus().getCode()).isEqualTo(Code.UNAVAILABLE);
        assertThat(result.getStatus().getDescription()).isEqualTo("Cluster max concurrent requests limit exceeded");
        assertThat(clusterStats.totalDroppedRequests()).isEqualTo(1L);
    } else {
        assertThat(result.getStatus().isOk()).isTrue();
        assertThat(clusterStats.totalDroppedRequests()).isEqualTo(0L);
    }
}

Example 2 with WeightedTargetConfig

use of io.grpc.xds.WeightedTargetLoadBalancerProvider.WeightedTargetConfig in project grpc-java by grpc.

the class ClusterImplLoadBalancerTest method subtest_maxConcurrentRequests_appliedWithDefaultValue.

private void subtest_maxConcurrentRequests_appliedWithDefaultValue(boolean enableCircuitBreaking) {
    LoadBalancerProvider weightedTargetProvider = new WeightedTargetLoadBalancerProvider();
    WeightedTargetConfig weightedTargetConfig = buildWeightedTargetConfig(ImmutableMap.of(locality, 10));
    ClusterImplConfig config = new ClusterImplConfig(CLUSTER, EDS_SERVICE_NAME, LRS_SERVER_INFO, null, Collections.<DropOverload>emptyList(), new PolicySelection(weightedTargetProvider, weightedTargetConfig), null);
    EquivalentAddressGroup endpoint = makeAddress("endpoint-addr", locality);
    deliverAddressesAndConfig(Collections.singletonList(endpoint), config);
    // one leaf balancer
    assertThat(downstreamBalancers).hasSize(1);
    FakeLoadBalancer leafBalancer = Iterables.getOnlyElement(downstreamBalancers);
    assertThat(leafBalancer.name).isEqualTo("round_robin");
    assertThat(Iterables.getOnlyElement(leafBalancer.addresses).getAddresses()).isEqualTo(endpoint.getAddresses());
    Subchannel subchannel = leafBalancer.helper.createSubchannel(CreateSubchannelArgs.newBuilder().setAddresses(leafBalancer.addresses).build());
    leafBalancer.deliverSubchannelState(subchannel, ConnectivityState.READY);
    assertThat(currentState).isEqualTo(ConnectivityState.READY);
    for (int i = 0; i < ClusterImplLoadBalancer.DEFAULT_PER_CLUSTER_MAX_CONCURRENT_REQUESTS; i++) {
        PickResult result = currentPicker.pickSubchannel(mock(PickSubchannelArgs.class));
        assertThat(result.getStatus().isOk()).isTrue();
        ClientStreamTracer.Factory streamTracerFactory = result.getStreamTracerFactory();
        streamTracerFactory.newClientStreamTracer(ClientStreamTracer.StreamInfo.newBuilder().build(), new Metadata());
    }
    ClusterStats clusterStats = Iterables.getOnlyElement(loadStatsManager.getClusterStatsReports(CLUSTER));
    assertThat(clusterStats.clusterServiceName()).isEqualTo(EDS_SERVICE_NAME);
    assertThat(clusterStats.totalDroppedRequests()).isEqualTo(0L);
    PickResult result = currentPicker.pickSubchannel(mock(PickSubchannelArgs.class));
    clusterStats = Iterables.getOnlyElement(loadStatsManager.getClusterStatsReports(CLUSTER));
    assertThat(clusterStats.clusterServiceName()).isEqualTo(EDS_SERVICE_NAME);
    if (enableCircuitBreaking) {
        assertThat(result.getStatus().isOk()).isFalse();
        assertThat(result.getStatus().getCode()).isEqualTo(Code.UNAVAILABLE);
        assertThat(result.getStatus().getDescription()).isEqualTo("Cluster max concurrent requests limit exceeded");
        assertThat(clusterStats.totalDroppedRequests()).isEqualTo(1L);
    } else {
        assertThat(result.getStatus().isOk()).isTrue();
        assertThat(clusterStats.totalDroppedRequests()).isEqualTo(0L);
    }
}

Example 3 with WeightedTargetConfig

use of io.grpc.xds.WeightedTargetLoadBalancerProvider.WeightedTargetConfig in project grpc-java by grpc.

the class ClusterImplLoadBalancerTest method recordLoadStats.

@Test
public void recordLoadStats() {
    LoadBalancerProvider weightedTargetProvider = new WeightedTargetLoadBalancerProvider();
    WeightedTargetConfig weightedTargetConfig = buildWeightedTargetConfig(ImmutableMap.of(locality, 10));
    ClusterImplConfig config = new ClusterImplConfig(CLUSTER, EDS_SERVICE_NAME, LRS_SERVER_INFO, null, Collections.<DropOverload>emptyList(), new PolicySelection(weightedTargetProvider, weightedTargetConfig), null);
    EquivalentAddressGroup endpoint = makeAddress("endpoint-addr", locality);
    deliverAddressesAndConfig(Collections.singletonList(endpoint), config);
    FakeLoadBalancer leafBalancer = Iterables.getOnlyElement(downstreamBalancers);
    Subchannel subchannel = leafBalancer.helper.createSubchannel(CreateSubchannelArgs.newBuilder().setAddresses(leafBalancer.addresses).build());
    leafBalancer.deliverSubchannelState(subchannel, ConnectivityState.READY);
    assertThat(currentState).isEqualTo(ConnectivityState.READY);
    PickResult result = currentPicker.pickSubchannel(mock(PickSubchannelArgs.class));
    assertThat(result.getStatus().isOk()).isTrue();
    ClientStreamTracer streamTracer1 = result.getStreamTracerFactory().newClientStreamTracer(ClientStreamTracer.StreamInfo.newBuilder().build(), // first RPC call
    new Metadata());
    ClientStreamTracer streamTracer2 = result.getStreamTracerFactory().newClientStreamTracer(ClientStreamTracer.StreamInfo.newBuilder().build(), // second RPC call
    new Metadata());
    ClientStreamTracer streamTracer3 = result.getStreamTracerFactory().newClientStreamTracer(ClientStreamTracer.StreamInfo.newBuilder().build(), // third RPC call
    new Metadata());
    streamTracer1.streamClosed(Status.OK);
    streamTracer2.streamClosed(Status.UNAVAILABLE);
    ClusterStats clusterStats = Iterables.getOnlyElement(loadStatsManager.getClusterStatsReports(CLUSTER));
    UpstreamLocalityStats localityStats = Iterables.getOnlyElement(clusterStats.upstreamLocalityStatsList());
    assertThat(localityStats.locality()).isEqualTo(locality);
    assertThat(localityStats.totalIssuedRequests()).isEqualTo(3L);
    assertThat(localityStats.totalSuccessfulRequests()).isEqualTo(1L);
    assertThat(localityStats.totalErrorRequests()).isEqualTo(1L);
    assertThat(localityStats.totalRequestsInProgress()).isEqualTo(1L);
    streamTracer3.streamClosed(Status.OK);
    // stats recorder released
    subchannel.shutdown();
    clusterStats = Iterables.getOnlyElement(loadStatsManager.getClusterStatsReports(CLUSTER));
    // Locality load is reported for one last time in case of loads occurred since the previous
    // load report.
    localityStats = Iterables.getOnlyElement(clusterStats.upstreamLocalityStatsList());
    assertThat(localityStats.locality()).isEqualTo(locality);
    assertThat(localityStats.totalIssuedRequests()).isEqualTo(0L);
    assertThat(localityStats.totalSuccessfulRequests()).isEqualTo(1L);
    assertThat(localityStats.totalErrorRequests()).isEqualTo(0L);
    assertThat(localityStats.totalRequestsInProgress()).isEqualTo(0L);
    clusterStats = Iterables.getOnlyElement(loadStatsManager.getClusterStatsReports(CLUSTER));
    // no longer reported
    assertThat(clusterStats.upstreamLocalityStatsList()).isEmpty();
}

Example 4 with WeightedTargetConfig

use of io.grpc.xds.WeightedTargetLoadBalancerProvider.WeightedTargetConfig in project grpc-java by grpc.

the class ClusterImplLoadBalancerTest method dropRpcsWithRespectToLbConfigDropCategories.

@Test
public void dropRpcsWithRespectToLbConfigDropCategories() {
    LoadBalancerProvider weightedTargetProvider = new WeightedTargetLoadBalancerProvider();
    WeightedTargetConfig weightedTargetConfig = buildWeightedTargetConfig(ImmutableMap.of(locality, 10));
    ClusterImplConfig config = new ClusterImplConfig(CLUSTER, EDS_SERVICE_NAME, LRS_SERVER_INFO, null, Collections.singletonList(DropOverload.create("throttle", 500_000)), new PolicySelection(weightedTargetProvider, weightedTargetConfig), null);
    EquivalentAddressGroup endpoint = makeAddress("endpoint-addr", locality);
    deliverAddressesAndConfig(Collections.singletonList(endpoint), config);
    when(mockRandom.nextInt(anyInt())).thenReturn(499_999, 999_999, 1_000_000);
    // one leaf balancer
    assertThat(downstreamBalancers).hasSize(1);
    FakeLoadBalancer leafBalancer = Iterables.getOnlyElement(downstreamBalancers);
    assertThat(leafBalancer.name).isEqualTo("round_robin");
    assertThat(Iterables.getOnlyElement(leafBalancer.addresses).getAddresses()).isEqualTo(endpoint.getAddresses());
    Subchannel subchannel = leafBalancer.helper.createSubchannel(CreateSubchannelArgs.newBuilder().setAddresses(leafBalancer.addresses).build());
    leafBalancer.deliverSubchannelState(subchannel, ConnectivityState.READY);
    assertThat(currentState).isEqualTo(ConnectivityState.READY);
    PickResult result = currentPicker.pickSubchannel(mock(PickSubchannelArgs.class));
    assertThat(result.getStatus().isOk()).isFalse();
    assertThat(result.getStatus().getCode()).isEqualTo(Code.UNAVAILABLE);
    assertThat(result.getStatus().getDescription()).isEqualTo("Dropped: throttle");
    ClusterStats clusterStats = Iterables.getOnlyElement(loadStatsManager.getClusterStatsReports(CLUSTER));
    assertThat(clusterStats.clusterServiceName()).isEqualTo(EDS_SERVICE_NAME);
    assertThat(Iterables.getOnlyElement(clusterStats.droppedRequestsList()).category()).isEqualTo("throttle");
    assertThat(Iterables.getOnlyElement(clusterStats.droppedRequestsList()).droppedCount()).isEqualTo(1L);
    assertThat(clusterStats.totalDroppedRequests()).isEqualTo(1L);
    // Config update updates drop policies.
    config = new ClusterImplConfig(CLUSTER, EDS_SERVICE_NAME, LRS_SERVER_INFO, null, Collections.singletonList(DropOverload.create("lb", 1_000_000)), new PolicySelection(weightedTargetProvider, weightedTargetConfig), null);
    loadBalancer.handleResolvedAddresses(ResolvedAddresses.newBuilder().setAddresses(Collections.singletonList(endpoint)).setAttributes(Attributes.newBuilder().set(InternalXdsAttributes.XDS_CLIENT_POOL, xdsClientPool).build()).setLoadBalancingPolicyConfig(config).build());
    result = currentPicker.pickSubchannel(mock(PickSubchannelArgs.class));
    assertThat(result.getStatus().isOk()).isFalse();
    assertThat(result.getStatus().getCode()).isEqualTo(Code.UNAVAILABLE);
    assertThat(result.getStatus().getDescription()).isEqualTo("Dropped: lb");
    clusterStats = Iterables.getOnlyElement(loadStatsManager.getClusterStatsReports(CLUSTER));
    assertThat(clusterStats.clusterServiceName()).isEqualTo(EDS_SERVICE_NAME);
    assertThat(Iterables.getOnlyElement(clusterStats.droppedRequestsList()).category()).isEqualTo("lb");
    assertThat(Iterables.getOnlyElement(clusterStats.droppedRequestsList()).droppedCount()).isEqualTo(1L);
    assertThat(clusterStats.totalDroppedRequests()).isEqualTo(1L);
    result = currentPicker.pickSubchannel(mock(PickSubchannelArgs.class));
    assertThat(result.getStatus().isOk()).isTrue();
}

Example 5 with WeightedTargetConfig

use of io.grpc.xds.WeightedTargetLoadBalancerProvider.WeightedTargetConfig in project grpc-java by grpc.

the class ClusterImplLoadBalancerTest method buildWeightedTargetConfig.

private WeightedTargetConfig buildWeightedTargetConfig(Map<Locality, Integer> localityWeights) {
    Map<String, WeightedPolicySelection> targets = new HashMap<>();
    for (Locality locality : localityWeights.keySet()) {
        int weight = localityWeights.get(locality);
        WeightedPolicySelection weightedLocalityLbPolicy = new WeightedPolicySelection(weight, roundRobin);
        targets.put(locality.toString(), weightedLocalityLbPolicy);
    }
    return new WeightedTargetConfig(Collections.unmodifiableMap(targets));
}