Examples with Controller io.kubernetes.client.extended.controller.Controller used on opensource projects

Example 1 with Controller

use of io.kubernetes.client.extended.controller.Controller 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 2 with Controller

use of io.kubernetes.client.extended.controller.Controller in project java by kubernetes-client.

the class DefaultControllerBuilderTest method testBuildWatchEventNotificationShouldWork.

@Test
public void testBuildWatchEventNotificationShouldWork() throws InterruptedException {
    V1PodList podList = new V1PodList().metadata(new V1ListMeta().resourceVersion("0")).items(Arrays.asList(new V1Pod().metadata(new V1ObjectMeta().name("test-pod1")).spec(new V1PodSpec().hostname("hostname1"))));
    stubFor(get(urlPathEqualTo("/api/v1/pods")).willReturn(aResponse().withStatus(200).withHeader("Content-Type", "application/json").withBody(new JSON().serialize(podList))));
    CoreV1Api api = new CoreV1Api(client);
    SharedIndexInformer<V1Pod> podInformer = informerFactory.sharedIndexInformerFor((CallGeneratorParams params) -> {
        return api.listPodForAllNamespacesCall(null, null, null, null, null, null, params.resourceVersion, null, params.timeoutSeconds, params.watch, null);
    }, V1Pod.class, V1PodList.class);
    List<Request> keyFuncReceivingRequests = new ArrayList<>();
    Function<V1Pod, Request> podKeyFunc = (V1Pod pod) -> {
        // twisting pod name key
        Request request = new Request(pod.getSpec().getHostname() + "/" + pod.getMetadata().getName());
        keyFuncReceivingRequests.add(request);
        return request;
    };
    List<Request> controllerReceivingRequests = new ArrayList<>();
    final Semaphore latch = new Semaphore(1);
    latch.acquire();
    final Controller testController = ControllerBuilder.defaultBuilder(informerFactory).withReconciler(new Reconciler() {

        @Override
        public Result reconcile(Request request) {
            controllerReceivingRequests.add(request);
            latch.release();
            return new Result(false);
        }
    }).watch((workQueue) -> ControllerBuilder.controllerWatchBuilder(V1Pod.class, workQueue).withWorkQueueKeyFunc(podKeyFunc).build()).build();
    controllerThead.submit(testController::run);
    informerFactory.startAllRegisteredInformers();
    // Wait for the request to be processed.
    latch.acquire(1);
    Request expectedRequest = new Request("hostname1/test-pod1");
    assertEquals(1, keyFuncReceivingRequests.size());
    assertEquals(expectedRequest, keyFuncReceivingRequests.get(0));
    assertEquals(1, controllerReceivingRequests.size());
    assertEquals(expectedRequest, controllerReceivingRequests.get(0));
}

Example 3 with Controller

use of io.kubernetes.client.extended.controller.Controller in project java by kubernetes-client.

the class ControllerExample method main.

public static void main(String[] args) throws IOException {
    CoreV1Api coreV1Api = new CoreV1Api();
    ApiClient apiClient = coreV1Api.getApiClient();
    OkHttpClient httpClient = apiClient.getHttpClient().newBuilder().readTimeout(0, TimeUnit.SECONDS).build();
    apiClient.setHttpClient(httpClient);
    // instantiating an informer-factory, and there should be only one informer-factory
    // globally.
    SharedInformerFactory informerFactory = new SharedInformerFactory();
    // registering node-informer into the informer-factory.
    SharedIndexInformer<V1Node> nodeInformer = informerFactory.sharedIndexInformerFor((CallGeneratorParams params) -> {
        return coreV1Api.listNodeCall(null, null, null, null, null, null, params.resourceVersion, null, params.timeoutSeconds, params.watch, null);
    }, V1Node.class, V1NodeList.class);
    informerFactory.startAllRegisteredInformers();
    EventBroadcaster eventBroadcaster = new LegacyEventBroadcaster(coreV1Api);
    // nodeReconciler prints node information on events
    NodePrintingReconciler nodeReconciler = new NodePrintingReconciler(nodeInformer, eventBroadcaster.newRecorder(new V1EventSource().host("localhost").component("node-printer")));
    // Use builder library to construct a default controller.
    Controller controller = ControllerBuilder.defaultBuilder(informerFactory).watch((workQueue) -> ControllerBuilder.controllerWatchBuilder(V1Node.class, workQueue).withWorkQueueKeyFunc((V1Node node) -> new Request(node.getMetadata().getName())).withOnAddFilter((V1Node createdNode) -> createdNode.getMetadata().getName().startsWith(// optional, set onAdd filter
    "docker-")).withOnUpdateFilter((V1Node oldNode, V1Node newNode) -> newNode.getMetadata().getName().startsWith(// optional, set onUpdate filter
    "docker-")).withOnDeleteFilter((V1Node deletedNode, Boolean stateUnknown) -> deletedNode.getMetadata().getName().startsWith(// optional, set onDelete filter
    "docker-")).build()).withReconciler(// required, set the actual reconciler
    nodeReconciler).withName(// optional, set name for controller
    "node-printing-controller").withWorkerCount(// optional, set worker thread count
    4).withReadyFunc(// optional, only starts controller when the
    nodeInformer::hasSynced).build();
    // Use builder library to manage one or multiple controllers.
    ControllerManager controllerManager = ControllerBuilder.controllerManagerBuilder(informerFactory).addController(controller).build();
    LeaderElectingController leaderElectingController = new LeaderElectingController(new LeaderElector(new LeaderElectionConfig(new EndpointsLock("kube-system", "leader-election", "foo"), Duration.ofMillis(10000), Duration.ofMillis(8000), Duration.ofMillis(5000))), controllerManager);
    leaderElectingController.run();
}