Examples of com.netflix.discovery.shared.Applications$Pair

com.netflix.discovery.shared.Applications
The class that wraps all the registry information returned by eureka server.
Note that the registry information is fetched from eureka server as specified in {@link EurekaClientConfig#getRegistryFetchIntervalSeconds()}. Once the information is fetched it is shuffled and also filtered for instances with {@link InstanceStatus#UP} status as specified by the configuration{@link EurekaClientConfig#shouldFilterOnlyUpInstances()}.
@author Karthik Ranganathan

        Assert.assertEquals("UP_1_", applications.getAppsHashCode());
    }


    private void setupBackupMock() {
        Application localApp = createLocalApps();
        Applications localApps = new Applications();
        localApps.addApplication(localApp);
        backupRegistry.setLocalRegionApps(localApps);
        Application remoteApp = createRemoteApps();
        Applications remoteApps = new Applications();
        remoteApps.addApplication(remoteApp);
        backupRegistry.getRemoteRegionVsApps().put(REMOTE_REGION, remoteApps);
    }

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            final String zone = getZone(myInfo);
            eurekaServiceUrls.set(getDiscoveryServiceUrls(zone));
            scheduler.scheduleWithFixedDelay(getServiceUrlUpdateTask(zone),
                                             clientConfig.getEurekaServiceUrlPollIntervalSeconds(),
                                             clientConfig.getEurekaServiceUrlPollIntervalSeconds(), TimeUnit.SECONDS);
            localRegionApps.set(new Applications());


            heartbeatExecutor = new ThreadPoolExecutor(
                    1, clientConfig.getHeartbeatExecutorThreadPoolSize(), 0, TimeUnit.SECONDS,
                    new SynchronousQueue<Runnable>());  // use direct handoff

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                                                       @Nullable String region) {
        if (vipAddress == null) {
            throw new IllegalArgumentException(
                    "Supplied VIP Address cannot be null");
        }
        Applications applications;
        if (instanceRegionChecker.isLocalRegion(region)) {
            applications = this.localRegionApps.get();
        } else {
            applications = remoteRegionVsApps.get(region);
            if (null == applications) {
                logger.debug("No applications are defined for region {}, so returning an empty instance list for vip "
                        + "address {}.", region, vipAddress);
                return Collections.emptyList();
            }
        }


        if (!secure) {
            return applications.getInstancesByVirtualHostName(vipAddress);
        } else {
            return applications.getInstancesBySecureVirtualHostName(vipAddress);


        }


    }

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                virtualHostname, secure);
        if (instanceInfoList == null || instanceInfoList.isEmpty()) {
            throw new RuntimeException("No matches for the virtual host name :"
                    + virtualHostname);
        }
        Applications apps = this.localRegionApps.get();
        int index = (int) (apps.getNextIndex(virtualHostname.toUpperCase(),
                secure).incrementAndGet() % instanceInfoList.size());
        return instanceInfoList.get(index);
    }

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     *            - The string representation of the service url.
     * @return - The registry information containing all applications.
     */
    public Applications getApplications(String serviceUrl) {
        ClientResponse response = null;
        Applications apps = null;
        try {
            response = makeRemoteCall(Action.Refresh);
            apps = response.getEntity(Applications.class);
            logger.debug(PREFIX + appPathIdentifier + " -  refresh status: "
                    + response.getStatus());

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        Stopwatch tracer = FETCH_REGISTRY_TIMER.start();


        try {
            // If the delta is disabled or if it is the first time, get all
            // applications
            Applications applications = getApplications();


            if (clientConfig.shouldDisableDelta()
                || (!Strings.isNullOrEmpty(clientConfig.getRegistryRefreshSingleVipAddress()))
                || forceFullRegistryFetch
                || (applications == null)
                || (applications.getRegisteredApplications().size() == 0)
                || (applications.getVersion() == -1)) //Client application does not have latest library supporting delta
            {
                logger.info("Disable delta property : {}", clientConfig.shouldDisableDelta());
                logger.info("Single vip registry refresh property : {}", clientConfig.getRegistryRefreshSingleVipAddress());
                logger.info("Force full registry fetch : {}", forceFullRegistryFetch);
                logger.info("Application is null : {}", (applications == null));
                logger.info("Registered Applications size is zero : {}",
                        (applications.getRegisteredApplications().size() == 0));
                logger.info("Application version is -1: {}", (applications.getVersion() == -1));
                response = getAndStoreFullRegistry();
            } else {
                response = getAndUpdateDelta(applications);
            }
            applications.setAppsHashCode(applications.getReconcileHashCode());
            logTotalInstances();


            logger.debug(PREFIX + appPathIdentifier + " -  refresh status: "
                    + response.getStatus());

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    private ClientResponse getAndStoreFullRegistry() throws Throwable {
        long currentUpdateGeneration = fetchRegistryGeneration.get();
        ClientResponse response = makeRemoteCall(Action.Refresh);
        logger.info("Getting all instance registry info from the eureka server");


        Applications apps = null;
        if (response.getStatus() == Status.OK.getStatusCode()) {
            apps = response.getEntity(Applications.class);
        }


        if (apps == null) {

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     */
    private ClientResponse getAndUpdateDelta(Applications applications) throws Throwable {
        long currentUpdateGeneration = fetchRegistryGeneration.get();
        ClientResponse response = makeRemoteCall(Action.Refresh_Delta);


        Applications delta = null;
        if (response.getStatus() == Status.OK.getStatusCode()) {
            delta = response.getEntity(Applications.class);
        }
        if (delta == null) {
            logger.warn("The server does not allow the delta revision to be applied because it is not safe. "
                    + "Hence got the full registry.");
            this.closeResponse(response);
            response = getAndStoreFullRegistry();
        } else if (fetchRegistryGeneration.compareAndSet(currentUpdateGeneration, currentUpdateGeneration + 1)) {
            String reconcileHashCode = "";
            if (fetchRegistryUpdateLock.tryLock()) {
                try {
                    updateDelta(delta);
                    reconcileHashCode = getReconcileHashCode(applications);
                } finally {
                    fetchRegistryUpdateLock.unlock();
                }
            } else {
                logger.warn("Cannot acquire update lock, aborting getAndUpdateDelta");
                return response;
            }
            // There is a diff in number of instances for some reason
            if ((!reconcileHashCode.equals(delta.getAppsHashCode()))
                    || clientConfig.shouldLogDeltaDiff()) {
                response = reconcileAndLogDifference(response, delta, reconcileHashCode);  // this makes a remoteCall
            }
        } else {
            logger.warn("Not updating application delta as another thread is updating it already");

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        this.closeResponse(response);


        long currentUpdateGeneration = fetchRegistryGeneration.get();
        response = makeRemoteCall(Action.Refresh);
        Applications serverApps = response.getEntity(Applications.class);


        try {
            Map<String, List<String>> reconcileDiffMap = getApplications().getReconcileMapDiff(serverApps);
            String reconcileString = "";
            for (Map.Entry<String, List<String>> mapEntry : reconcileDiffMap.entrySet()) {

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     */
    private void updateDelta(Applications delta) {
        int deltaCount = 0;
        for (Application app : delta.getRegisteredApplications()) {
            for (InstanceInfo instance : app.getInstances()) {
                Applications applications = getApplications();
                String instanceRegion = instanceRegionChecker.getInstanceRegion(instance);
                if (!instanceRegionChecker.isLocalRegion(instanceRegion)) {
                    Applications remoteApps = remoteRegionVsApps.get(instanceRegion);
                    if (null == remoteApps) {
                        remoteApps = new Applications();
                        remoteRegionVsApps.put(instanceRegion, remoteApps);
                    }
                    applications = remoteApps;
                }

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