Java Endpoints类代码示例

import io.fabric8.kubernetes.api.model.Endpoints; //导入依赖的package包/类
private void update(Endpoints endpoints) {
    List<EquivalentAddressGroup> servers = new ArrayList<>();
    endpoints.getSubsets().stream().forEach(subset -> {
      long matchingPorts = subset.getPorts().stream().filter(p -> {
        return p.getPort() == port;
      }).count();
      if (matchingPorts > 0) {
        subset.getAddresses().stream().map(address -> {
          return new EquivalentAddressGroup(new InetSocketAddress(address.getIp(), port));
        }).forEach(address -> {
          servers.add(address);
        });
      }
    });

    listener.onAddresses(servers, Attributes.EMPTY);
}
 

import io.fabric8.kubernetes.api.model.Endpoints; //导入依赖的package包/类
@Override
public Endpoints build() {
	if (endpointIPs.isEmpty() || ports.isEmpty()) {
		throw new IllegalStateException("IP list and port list must be non-empty");
	}

	EndpointSubsetBuilder subset = new EndpointSubsetBuilder()
			.withAddresses(endpointIPs.stream().map(ip ->
							new EndpointAddressBuilder()
									.withIp(ip).build()
			).collect(Collectors.toList()))
			.withPorts(ports.stream().map(port ->
							new EndpointPortBuilder()
									.withPort(port.getFirst())
									.withProtocol(port.getSecond().toString())
									.build()
			).collect(Collectors.toList()));

	return new io.fabric8.kubernetes.api.model.EndpointsBuilder()
			.withMetadata(metadataBuilder().build())
			.withSubsets(subset.build()).build();
}
 

import io.fabric8.kubernetes.api.model.Endpoints; //导入依赖的package包/类
@Override
@GuardedBy("this")
public void refresh() {
  if (refreshing) return;
  try {
    refreshing = true;

    Endpoints endpoints = kubernetesClient.endpoints().inNamespace(namespace)
        .withName(name)
        .get();

    if (endpoints == null) {
      // Didn't find anything, retrying
      ScheduledExecutorService timerService = SharedResourceHolder.get(timerServiceResource);
      timerService.schedule(() -> {
        refresh();
      }, 30, TimeUnit.SECONDS);
      return;
    }

    update(endpoints);
    watch();
  } finally {
    refreshing = false;
  }
}
 

import io.fabric8.kubernetes.api.model.Endpoints; //导入依赖的package包/类
@Override
public ServiceInstance getLocalServiceInstance() {
    String serviceName = properties.getServiceName();
    String podName = System.getenv(HOSTNAME);
    ServiceInstance defaultInstance = new DefaultServiceInstance(serviceName, "localhost", 8080, false);

    Endpoints endpoints = client.endpoints().withName(serviceName).get();
    if (Utils.isNullOrEmpty(podName) || endpoints == null) {
        return defaultInstance;
    }
    try {
        return endpoints.getSubsets()
                .stream()
                .filter(s -> s.getAddresses().get(0).getTargetRef().getName().equals(podName))
                .map(s -> (ServiceInstance) new KubernetesServiceInstance(serviceName,
                        s.getAddresses().stream().findFirst().orElseThrow(IllegalStateException::new),
                        s.getPorts().stream().findFirst().orElseThrow(IllegalStateException::new),
                        false))
                .findFirst().orElse(defaultInstance);
    } catch (Throwable t) {
        return defaultInstance;
    }
}
 

import io.fabric8.kubernetes.api.model.Endpoints; //导入依赖的package包/类
@Override
public EndpointsList getEndpoints(@QueryParam("namespace") String namespace) {
    EndpointsList answer = new EndpointsList();
    List<Endpoints> list = new ArrayList<>();
    answer.setItems(list);

    ServiceList services = getServices(namespace);
    if (services != null) {
        List<Pod> pods = getPods(namespace).getItems();
        List<Service> items = notNullList(services.getItems());
        for (Service service : items) {
            Endpoints endpoints = createEndpointsForService(service, pods);
            if (endpoints != null) {
                list.add(endpoints);
            }
        }
    }
    return answer;
}
 

import io.fabric8.kubernetes.api.model.Endpoints; //导入依赖的package包/类
/**
 * Finds the pod that correspond to the specified resource.
 *
 * @param resource The resource.
 * @return The podList with the matching pods.
 */
public static <T extends HasMetadata> PodList podsOf(KubernetesClient client, T resource) {
    if (resource instanceof Pod) {
        return new PodListBuilder().withItems((Pod) resource).build();
    } else if (resource instanceof Endpoints) {
        return podsOf(client, client.services()
                .inNamespace(resource.getMetadata().getNamespace())
                .withName(resource.getMetadata().getName())
                .get());
    } else if (resource instanceof Service) {
        return client.pods()
                .inNamespace(resource.getMetadata().getNamespace())
                .withLabels(((Service) resource).getSpec().getSelector())
                .list();
    } else if (resource instanceof ReplicationController) {
        return client.pods()
                .inNamespace(resource.getMetadata().getNamespace())
                .withLabels(((ReplicationController) resource).getSpec().getSelector())
                .list();
    } else if (resource instanceof Deployment) {
        return findMatching(client, (Deployment) resource);
    } else if (resource instanceof DeploymentConfig) {
        return client.pods().inNamespace(resource.getMetadata().getNamespace()).withLabel("deploymentconfig",
                resource.getMetadata().getName()).list();
    } else {
        return new PodListBuilder().build();
    }
}
 

import io.fabric8.kubernetes.api.model.Endpoints; //导入依赖的package包/类
private static List<ServiceInstance> getInstances(KubernetesClient client, String name, String namespace) {
    Assert.notNull(name, "[Assertion failed] - the service name must not be null");

    return Optional.ofNullable(client.endpoints().inNamespace(namespace).withName(name).get())
            .orElse(new Endpoints())
            .getSubsets()
            .stream()
            .flatMap(s -> s.getAddresses().stream().map(a -> (ServiceInstance) new KubernetesServiceInstance(name, a ,s.getPorts().stream().findFirst().orElseThrow(IllegalStateException::new), false)))
            .collect(Collectors.toList());
}
 

import io.fabric8.kubernetes.api.model.Endpoints; //导入依赖的package包/类
@Override
public List<ServiceInstance> getInstances(String serviceId) {
    Assert.notNull(serviceId, "[Assertion failed] - the object argument must be null");
    return Optional.ofNullable(client.endpoints().withName(serviceId).get()).orElse(new Endpoints())
            .getSubsets()
            .stream()
            .flatMap(s -> s.getAddresses().stream().map(a -> (ServiceInstance) new KubernetesServiceInstance(serviceId, a ,s.getPorts().stream().findFirst().orElseThrow(IllegalStateException::new), false)))
            .collect(Collectors.toList());

}
 

import io.fabric8.kubernetes.api.model.Endpoints; //导入依赖的package包/类
public List<ServiceCallServer> getUpdatedListOfServers(String name) {
    LOG.debug("Discovering endpoints from namespace: {} with name: {}", getNamespace(), name);
    Endpoints endpoints = client.endpoints().inNamespace(getNamespace()).withName(name).get();
    List<ServiceCallServer> result = new ArrayList<>();
    if (endpoints != null) {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Found {} endpoints in namespace: {} for name: {} and portName: {}",
                endpoints.getSubsets().size(), getNamespace(), name, getPortName());
        }
        for (EndpointSubset subset : endpoints.getSubsets()) {
            if (subset.getPorts().size() == 1) {
                addServers(result, subset.getPorts().get(FIRST), subset);
            } else {
                final List<EndpointPort> ports = subset.getPorts();
                final int portSize = ports.size();

                EndpointPort port;
                for (int p = 0; p < portSize; p++) {
                    port = ports.get(p);
                    if (ObjectHelper.isEmpty(getPortName()) || getPortName().endsWith(port.getName())) {
                        addServers(result, port, subset);
                    }
                }
            }
        }
    }

    return result;
}
 

import io.fabric8.kubernetes.api.model.Endpoints; //导入依赖的package包/类
private List<DiscoveryNode> getDiscoveryNodes(EndpointsList endpointsInNamespace) {
    if (endpointsInNamespace == null) {
        return Collections.emptyList();
    }
    List<DiscoveryNode> discoveredNodes = new ArrayList<DiscoveryNode>();
    for (Endpoints endpoints : endpointsInNamespace.getItems()) {
        discoveredNodes.addAll(getSimpleDiscoveryNodes(endpoints));
    }
    return discoveredNodes;
}
 

import io.fabric8.kubernetes.api.model.Endpoints; //导入依赖的package包/类
private List<DiscoveryNode> getSimpleDiscoveryNodes(Endpoints endpoints) {
    if (endpoints == null) {
        return Collections.emptyList();
    }
    List<EndpointSubset> endpointsSubsets = endpoints.getSubsets();
    if (endpointsSubsets == null) {
        return Collections.emptyList();
    }
    List<DiscoveryNode> discoveredNodes = new ArrayList<DiscoveryNode>();
    for (EndpointSubset endpointSubset : endpointsSubsets) {
        resolveNotReadyAddresses(discoveredNodes, endpointSubset);
        resolveAddresses(discoveredNodes, endpointSubset);
    }
    return discoveredNodes;
}
 

import io.fabric8.kubernetes.api.model.Endpoints; //导入依赖的package包/类
private void resolveWithNamespaceAndNodeInNamespace(final int port, final int expectedPort) {
    Endpoints discoveryNode = createEndpoints(1);
    nodesInNamespace.getItems().add(discoveryNode);

    ServiceEndpointResolver sut = new ServiceEndpointResolver(LOGGER, SERVICE_NAME, port, null, null, NAMESPACE, null, KUBERNETES_MASTER_URL, API_TOKEN);
    List<DiscoveryNode> nodes = sut.resolve();

    assertEquals(1, nodes.size());
    assertEquals(expectedPort, nodes.get(0).getPrivateAddress().getPort());
}
 

import io.fabric8.kubernetes.api.model.Endpoints; //导入依赖的package包/类
@Test
public void resolveWithNamespaceAndNodeInNamespaceWithNoReadyPods() {
    Endpoints discoveryNode = createEndpoints(1);
    discoveryNode.getSubsets().get(0).setAddresses(null);
    nodesInNamespace.getItems().add(discoveryNode);

    ServiceEndpointResolver sut = new ServiceEndpointResolver(LOGGER, SERVICE_NAME, 0, null, null, NAMESPACE, null, KUBERNETES_MASTER_URL, API_TOKEN);
    List<DiscoveryNode> nodes = sut.resolve();

    assertEquals(0, nodes.size());
}
 

import io.fabric8.kubernetes.api.model.Endpoints; //导入依赖的package包/类
@Test
public void resolveWithNamespaceAndNodeInNamespaceWithNoSubsets() {
    Endpoints discoveryNode = createEndpoints(1);
    discoveryNode.setSubsets(null);
    nodesInNamespace.getItems().add(discoveryNode);

    ServiceEndpointResolver sut = new ServiceEndpointResolver(LOGGER, SERVICE_NAME, 0, null, null, NAMESPACE, null, KUBERNETES_MASTER_URL, API_TOKEN);
    List<DiscoveryNode> nodes = sut.resolve();

    assertEquals(0, nodes.size());
}
 

import io.fabric8.kubernetes.api.model.Endpoints; //导入依赖的package包/类
@Test
public void resolveWithServiceLabelAndNodeWithServiceLabel() {
    nodesInNamespace.getItems().add(createEndpoints(1));
    Endpoints discoveryNode = createEndpoints(2);
    nodesWithLabel.getItems().add(discoveryNode);

    ServiceEndpointResolver sut = new ServiceEndpointResolver(LOGGER, SERVICE_NAME, 0, SERVICE_LABEL, SERVICE_LABEL_VALUE, NAMESPACE, null, KUBERNETES_MASTER_URL, API_TOKEN);
    List<DiscoveryNode> nodes = sut.resolve();

    assertEquals(1, nodes.size());
    assertEquals(2, nodes.get(0).getPrivateAddress().getPort());
}