Examples with SharedInformerFactory io.kubernetes.client.informer.SharedInformerFactory used on opensource projects

Example 1 with SharedInformerFactory

use of io.kubernetes.client.informer.SharedInformerFactory in project java by kubernetes-client.

the class InformerExample method main.

public static void main(String[] args) throws Exception {
    CoreV1Api coreV1Api = new CoreV1Api();
    ApiClient apiClient = coreV1Api.getApiClient();
    OkHttpClient httpClient = apiClient.getHttpClient().newBuilder().readTimeout(0, TimeUnit.SECONDS).build();
    apiClient.setHttpClient(httpClient);
    SharedInformerFactory factory = new SharedInformerFactory(apiClient);
    // Node informer
    SharedIndexInformer<V1Node> nodeInformer = factory.sharedIndexInformerFor(// the informer-factory.
    (CallGeneratorParams params) -> {
        return coreV1Api.listNodeCall(null, null, null, null, null, null, params.resourceVersion, null, params.timeoutSeconds, params.watch, null);
    }, V1Node.class, V1NodeList.class);
    nodeInformer.addEventHandler(new ResourceEventHandler<V1Node>() {

        @Override
        public void onAdd(V1Node node) {
            System.out.printf("%s node added!\n", node.getMetadata().getName());
        }

        @Override
        public void onUpdate(V1Node oldNode, V1Node newNode) {
            System.out.printf("%s => %s node updated!\n", oldNode.getMetadata().getName(), newNode.getMetadata().getName());
        }

        @Override
        public void onDelete(V1Node node, boolean deletedFinalStateUnknown) {
            System.out.printf("%s node deleted!\n", node.getMetadata().getName());
        }
    });
    factory.startAllRegisteredInformers();
    V1Node nodeToCreate = new V1Node();
    V1ObjectMeta metadata = new V1ObjectMeta();
    metadata.setName("noxu");
    nodeToCreate.setMetadata(metadata);
    V1Node createdNode = coreV1Api.createNode(nodeToCreate, null, null, null, null);
    Thread.sleep(3000);
    Lister<V1Node> nodeLister = new Lister<V1Node>(nodeInformer.getIndexer());
    V1Node node = nodeLister.get("noxu");
    System.out.printf("noxu created! %s\n", node.getMetadata().getCreationTimestamp());
    factory.stopAllRegisteredInformers();
    Thread.sleep(3000);
    System.out.println("informer stopped..");
}

Example 2 with SharedInformerFactory

use of io.kubernetes.client.informer.SharedInformerFactory in project java by kubernetes-client.

the class ControllerManagerTest method testControllerStartShutdown.

@Test
public void testControllerStartShutdown() {
    DummyController dummy1 = new DummyController();
    DummyController dummy2 = new DummyController();
    ControllerManager cm = new ControllerManager(new SharedInformerFactory(), dummy1, dummy2);
    cm.run();
    assertTrue(dummy1.started);
    assertTrue(dummy2.started);
    cm.shutdown();
    assertTrue(dummy1.stopped);
    assertTrue(dummy2.stopped);
}

Example 3 with SharedInformerFactory

use of io.kubernetes.client.informer.SharedInformerFactory in project java by kubernetes-client.

the class KubernetesControllerFactory method buildController.

private Controller buildController(SharedInformerFactory sharedInformerFactory, Reconciler r) throws BeansException {
    KubernetesReconciler kubernetesReconciler = r.getClass().getAnnotation(KubernetesReconciler.class);
    String reconcilerName = kubernetesReconciler.value();
    KubernetesReconcilerWatches watches = kubernetesReconciler.watches();
    DefaultControllerBuilder builder = ControllerBuilder.defaultBuilder(sharedInformerFactory);
    RateLimitingQueue<Request> workQueue = new DefaultRateLimitingQueue<>();
    builder = builder.withWorkQueue(workQueue);
    Map<Class, AddFilterAdaptor> addFilters = getAddFilters(watches, r);
    Map<Class, UpdateFilterAdaptor> updateFilters = getUpdateFilters(watches, r);
    Map<Class, DeleteFilterAdaptor> deleteFilters = getDeleteFilters(watches, r);
    List<ReadyFuncAdaptor> readyFuncs = getReadyFuncs(r);
    for (KubernetesReconcilerWatch watch : watches.value()) {
        try {
            Function<? extends KubernetesObject, Request> workQueueKeyFunc;
            try {
                workQueueKeyFunc = watch.workQueueKeyFunc().getConstructor(WorkQueue.class).newInstance(workQueue);
            } catch (NoSuchMethodException e) {
                workQueueKeyFunc = watch.workQueueKeyFunc().newInstance();
            } catch (InvocationTargetException e) {
                throw new BeanCreationException("Failed instantiating controller watch: " + e.getMessage());
            }
            final Function<? extends KubernetesObject, Request> finalWorkQueueKeyFunc = workQueueKeyFunc;
            builder = builder.watch((q) -> {
                return ControllerBuilder.controllerWatchBuilder(watch.apiTypeClass(), q).withOnAddFilter(addFilters.get(watch.apiTypeClass())).withOnUpdateFilter(updateFilters.get(watch.apiTypeClass())).withOnDeleteFilter(deleteFilters.get(watch.apiTypeClass())).withWorkQueueKeyFunc(finalWorkQueueKeyFunc).withResyncPeriod(Duration.ofMillis(watch.resyncPeriodMillis())).build();
            });
            for (Supplier<Boolean> readyFunc : readyFuncs) {
                builder = builder.withReadyFunc(readyFunc);
            }
        } catch (IllegalAccessException | InstantiationException e) {
            throw new BeanCreationException("Failed instantiating controller: " + e.getMessage());
        }
    }
    builder = builder.withWorkerCount(kubernetesReconciler.workerCount());
    return builder.withReconciler(r).withName(reconcilerName).build();
}

Example 4 with SharedInformerFactory

use of io.kubernetes.client.informer.SharedInformerFactory in project java by kubernetes-client.

the class DefaultSharedIndexInformerWireMockTest method testAllNamespacedPodInformerNormalBehavior.

@Test
public void testAllNamespacedPodInformerNormalBehavior() throws InterruptedException {
    CoreV1Api coreV1Api = new CoreV1Api(client);
    String startRV = "1000";
    String endRV = "1001";
    V1PodList podList = new V1PodList().metadata(new V1ListMeta().resourceVersion(startRV)).items(Arrays.asList());
    stubFor(get(urlPathEqualTo("/api/v1/pods")).withQueryParam("watch", equalTo("false")).willReturn(aResponse().withStatus(200).withHeader("Content-Type", "application/json").withBody(new JSON().serialize(podList))));
    Watch.Response<V1Pod> watchResponse = new Watch.Response<>(EventType.ADDED.name(), new V1Pod().metadata(new V1ObjectMeta().namespace(namespace).name(podName).resourceVersion(endRV).labels(Collections.singletonMap("foo", "bar")).annotations(Collections.singletonMap("foo", "bar"))));
    stubFor(get(urlPathEqualTo("/api/v1/pods")).withQueryParam("watch", equalTo("true")).willReturn(aResponse().withStatus(200).withHeader("Content-Type", "application/json").withBody(new JSON().serialize(watchResponse))));
    SharedInformerFactory factory = new SharedInformerFactory();
    SharedIndexInformer<V1Pod> podInformer = factory.sharedIndexInformerFor((CallGeneratorParams params) -> {
        try {
            return coreV1Api.listPodForAllNamespacesCall(null, null, null, null, null, null, params.resourceVersion, null, params.timeoutSeconds, params.watch, null);
        } catch (ApiException e) {
            throw new RuntimeException(e);
        }
    }, V1Pod.class, V1PodList.class);
    podInformer.setTransform((obj) -> {
        // deepcopy
        String json = new JSON().serialize(obj);
        V1Pod pod = new JSON().deserialize(json, V1Pod.class);
        // remove pod annotations
        pod.getMetadata().setAnnotations(null);
        return pod;
    });
    AtomicBoolean foundExistingPod = new AtomicBoolean(false);
    AtomicBoolean transformed = new AtomicBoolean(false);
    AtomicBoolean setTransformAfterStarted = new AtomicBoolean(false);
    podInformer.addEventHandler(new ResourceEventHandler<V1Pod>() {

        @Override
        public void onAdd(V1Pod obj) {
            if (podName.equals(obj.getMetadata().getName()) && namespace.equals(obj.getMetadata().getNamespace())) {
                foundExistingPod.set(true);
            }
            V1ObjectMeta metadata = obj.getMetadata();
            // check if the object was transformed
            if (metadata.getLabels().get("foo").equals("bar") && metadata.getAnnotations() == null) {
                transformed.set(true);
            }
        }

        @Override
        public void onUpdate(V1Pod oldObj, V1Pod newObj) {
        }

        @Override
        public void onDelete(V1Pod obj, boolean deletedFinalStateUnknown) {
        }
    });
    factory.startAllRegisteredInformers();
    Thread.sleep(1000);
    // can not set transform func if the informer has started
    try {
        podInformer.setTransform((obj) -> new V1Pod());
        setTransformAfterStarted.set(true);
    } catch (IllegalStateException e) {
    }
    assertTrue(foundExistingPod.get());
    assertTrue(transformed.get());
    assertFalse(setTransformAfterStarted.get());
    assertEquals(endRV, podInformer.lastSyncResourceVersion());
    verify(1, getRequestedFor(urlPathEqualTo("/api/v1/pods")).withQueryParam("watch", equalTo("false")));
    verify(moreThan(1), getRequestedFor(urlPathEqualTo("/api/v1/pods")).withQueryParam("watch", equalTo("true")));
    factory.stopAllRegisteredInformers();
}

Example 5 with SharedInformerFactory

use of io.kubernetes.client.informer.SharedInformerFactory in project java by kubernetes-client.

the class DefaultSharedIndexInformerWireMockTest method testInformerReListWatchOnWatchConflict.

@Test
public void testInformerReListWatchOnWatchConflict() throws InterruptedException {
    CoreV1Api coreV1Api = new CoreV1Api(client);
    String startRV = "1000";
    V1PodList podList = new V1PodList().metadata(new V1ListMeta().resourceVersion(startRV)).items(Arrays.asList());
    stubFor(get(urlPathEqualTo("/api/v1/namespaces/" + namespace + "/pods")).withQueryParam("watch", equalTo("false")).willReturn(aResponse().withStatus(200).withHeader("Content-Type", "application/json").withBody(new JSON().serialize(podList))));
    Watch.Response<V1Pod> watchResponse = new Watch.Response<>(EventType.ERROR.name(), new V1Status().apiVersion("v1").kind("Status").code(409));
    stubFor(get(urlPathEqualTo("/api/v1/namespaces/" + namespace + "/pods")).withQueryParam("watch", equalTo("true")).withQueryParam("resourceVersion", equalTo(startRV)).willReturn(aResponse().withStatus(200).withHeader("Content-Type", "application/json").withBody(new JSON().serialize(watchResponse))));
    SharedInformerFactory factory = new SharedInformerFactory();
    SharedIndexInformer<V1Pod> podInformer = factory.sharedIndexInformerFor((CallGeneratorParams params) -> {
        try {
            return coreV1Api.listNamespacedPodCall(namespace, null, null, null, null, null, null, params.resourceVersion, null, params.timeoutSeconds, params.watch, null);
        } catch (ApiException e) {
            throw new RuntimeException(e);
        }
    }, V1Pod.class, V1PodList.class);
    factory.startAllRegisteredInformers();
    // Sleep mroe than 1s so that informer can perform multiple rounds of list-watch
    Thread.sleep(3000);
    verify(moreThan(1), getRequestedFor(urlPathEqualTo("/api/v1/namespaces/" + namespace + "/pods")).withQueryParam("watch", equalTo("false")));
    verify(moreThan(1), getRequestedFor(urlPathEqualTo("/api/v1/namespaces/" + namespace + "/pods")).withQueryParam("watch", equalTo("true")));
    factory.stopAllRegisteredInformers();
}