Examples of org.wso2.carbon.discovery.client.DiscoveryClient

Package org.wso2.carbon.discovery.client

Examples of org.wso2.carbon.discovery.client.DiscoveryClient

org.wso2.eventing.SubscriptionManager
The WS-Discovery client API. This API can be used to probe external discovery proxies by sending WS-D probe requests. Also it can be used to WS-D resolve requests. This API is a wrapper for the Axis2 client API. Therefore Axis2 modules such as Addressing and Rampart can be enagaged on the DiscoveryClient to support various QoS requirements. However since the ServiceClient API of Axis2 is not intended to be thread safe, it is not recommended to use this class as a shared instance in a multithreaded setting.

        ConfigurationContext cfgCtx = ConfigHolder.getInstance().getClientConfigurationContext();
        String proxyURL = properties.getProperty(DISCOVERY_PROXY_URL);
        if (proxyURL == null) {
            throw new DiscoveryException("The discovery proxy URL is not specified");
        }
        DiscoveryClient client = new DiscoveryClient(cfgCtx, proxyURL);
        TargetService service = client.resolve(uuid);
        client.cleanup();
        return getEndpointFromService(service, protocol);
    }

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        if (pd.getScopes() != null) {
            scopes = Util.toURIArray(pd.getScopes());
        }


        DiscoveryClient client = new DiscoveryClient(
                ConfigHolder.getInstance().getClientConfigurationContext(), proxy.getUrl());
        if (proxy.getPolicy() != null) {
            client.engageModule("rampart");
            client.setProperty(RampartMessageData.KEY_RAMPART_POLICY,
                    getPolicy(proxy.getPolicy(), registry));
        }
        TargetService[] services = client.probe(types, scopes, pd.getRule());
        client.cleanup();
        return services;
    }

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        DiscoveryProxyDetails proxy = getDiscoveryProxy(name, registry);
        if (proxy == null) {
            throw new DiscoveryException("No discovery proxy exists by the name " + name);
        }


        DiscoveryClient client = new DiscoveryClient(
                ConfigHolder.getInstance().getClientConfigurationContext(), proxy.getUrl());
        if (proxy.getPolicy() != null) {
            client.engageModule("rampart");
            client.setProperty(RampartMessageData.KEY_RAMPART_POLICY,
                    getPolicy(proxy.getPolicy(), registry));
        }
        TargetService service = client.resolve(id);
        client.cleanup();
        return service;
    }

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            try {
                for (int i = 0; i < scopes.length; i++) {
                    uriScopes[i] = new URI(scopes[i]);
                }
                DiscoveryClient discoveryClient = new DiscoveryClient(messageContext.getConfigurationContext(), discoveryProxy);
                TargetService[] targetServices = discoveryClient.probe(types, uriScopes);
                if ((targetServices != null) && (targetServices.length > 0)) {


                    // currently we try to use the first one.
                    URI targetURI = null;
                    if ((targetServices[0].getXAddresses() != null) && (targetServices[0].getXAddresses().length > 0)) {
                        targetURI = getTargetURI(targetServices[0].getXAddresses(),
                                (String) messageContext.getProperty(DiscoveryConstants.DISCOVERY_SCHEME));
                    } else {
                        // get the epr using a resolve request
                        TargetService targetService = discoveryClient.resolve(targetServices[0].getEpr().getAddress());
                        if ((targetService.getXAddresses() != null) && (targetService.getXAddresses().length > 0)) {
                            targetURI = getTargetURI(targetService.getXAddresses(),
                                    (String) messageContext.getProperty(DiscoveryConstants.DISCOVERY_SCHEME));
                        } else {
                            throw new AxisFault("Resolve message did not return the service location");

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            String msg = "No Discovery proxy has been configured at tenant level or global level";
            log.error(msg);
            throw new CarbonException(msg);
        }


        DiscoveryClient discoveryClient;
        try {
            discoveryClient = new DiscoveryClient(clientCfgCtx, proxyURLString);
        } catch (DiscoveryException e) {
            handleException("Error while initializing a Discovery client for the URL: " +
                        proxyURLString, e);
            return null;
        }


        Set<String> urlList = new HashSet<String>();
        Exception ex = null;


        try {
            TargetService[] services = discoveryClient.probe(types, scopes, matchingRule);
            if (services != null) {
                // The probe may have returned multiple services
                // Need to extract URLs from each of them
                for (TargetService service : services) {
                    if (service.getXAddresses() != null) {
                        for (URI uri : service.getXAddresses()) {
                            urlList.add(uri.toString());
                        }
                    }
                }
            }


        } catch (DiscoveryException e) {
            ex = e;
        } finally {
            try {
                discoveryClient.cleanup();
            } catch (DiscoveryException ignored) {
                // This one we let go by - We have completed the probe so we can return the URLs
                log.warn("Error while cleaning up the discovery client to URL: " + proxyURLString);
            }
        }

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        }


        public void run() {
            try {
                MessageContext msgCtx = ((Axis2MessageContext) synCtx).getAxis2MessageContext();
                Event<MessageContext> event = new Event(msgCtx);
                subscriptions = subscriptionManager.getMatchingSubscriptions(event);
            } catch (EventException e) {
                handleException("Matching subscriptions fetching error", e);
            }

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     * @throws EventException event
     */
    private void processGetStatusRequest(MessageContext mc,
                                         ResponseMessageBuilder messageBuilder)
            throws AxisFault, EventException {
        Subscription subscription =
                SubscriptionMessageBuilder.createGetStatusMessage(mc);
        if (log.isDebugEnabled()) {
            log.debug("GetStatus request recived for SynapseSubscription ID : " +
                    subscription.getId());
        }
        subscription = subscriptionManager.getSubscription(subscription.getId());
        if (subscription != null) {
            if (log.isDebugEnabled()) {
                log.debug("Sending GetStatus responce for SynapseSubscription ID : " +
                        subscription.getId());
            }
            //send the responce
            SOAPEnvelope soapEnvelope = messageBuilder.genGetStatusResponse(subscription);
            dispatchResponse(soapEnvelope, EventingConstants.WSE_GET_STATUS_RESPONSE,
                    mc, false);

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            // Adding static subscriptions
            List<Subscription> staticSubscriptionList =
                    eventSource.getSubscriptionManager().getStaticSubscriptions();
            for (Iterator<Subscription> iterator = staticSubscriptionList.iterator();
                 iterator.hasNext();) {
                Subscription staticSubscription = iterator.next();
                OMElement staticSubElem =
                        fac.createOMElement("subscription", XMLConfigConstants.SYNAPSE_OMNAMESPACE);
                staticSubElem.addAttribute(
                        fac.createOMAttribute("id", nullNS, staticSubscription.getId()));
                OMElement filterElem =
                        fac.createOMElement("filter", XMLConfigConstants.SYNAPSE_OMNAMESPACE);
                filterElem.addAttribute(fac.createOMAttribute("source", nullNS,
                        (String) staticSubscription.getFilterValue()));
                filterElem.addAttribute(fac.createOMAttribute("dialect", nullNS,
                        (String) staticSubscription.getFilterDialect()));
                staticSubElem.addChild(filterElem);
                OMElement endpointElem =
                        fac.createOMElement("endpoint", XMLConfigConstants.SYNAPSE_OMNAMESPACE);
                OMElement addressElem =
                        fac.createOMElement("address", XMLConfigConstants.SYNAPSE_OMNAMESPACE);
                addressElem.addAttribute(
                        fac.createOMAttribute("uri", nullNS, staticSubscription.getEndpointUrl()));
                endpointElem.addChild(addressElem);
                staticSubElem.addChild(endpointElem);
                if (staticSubscription.getExpires() != null) {
                    OMElement expiresElem =
                            fac.createOMElement("expires", XMLConfigConstants.SYNAPSE_OMNAMESPACE);
                    fac.createOMText(expiresElem,
                            ConverterUtil.convertToString(staticSubscription.getExpires()));
                    staticSubElem.addChild(expiresElem);
                }
                evenSourceElem.addChild(staticSubElem);
            }

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    public SynapseSubscription() {
        this.setId(UIDGenerator.generateURNString());
        this.setDeliveryMode(EventingConstants.WSE_DEFAULT_DELIVERY_MODE);
        SubscriptionData subscriptionData = new SubscriptionData();
        subscriptionData.setProperty(SynapseEventingConstants.STATIC_ENTRY, "false");
        this.setSubscriptionData(subscriptionData);
    }

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                    .getAttribute(new QName(XMLConfigConstants.NULL_NAMESPACE, "class"));
            if (clazz != null) {
                String className = clazz.getAttributeValue();
                try {
                    Class subscriptionManagerClass = Class.forName(className);
                    SubscriptionManager manager =
                            (SubscriptionManager) subscriptionManagerClass.newInstance();
                    Iterator itr = subscriptionManagerElem.getChildrenWithName(PROPERTIES_QNAME);
                    while (itr.hasNext()) {
                        OMElement propElem = (OMElement) itr.next();
                        String propName =
                                propElem.getAttribute(new QName("name")).getAttributeValue();
                        String propValue =
                                propElem.getAttribute(new QName("value")).getAttributeValue();
                        if (propName != null && !"".equals(propName.trim()) &&
                                propValue != null && !"".equals(propValue.trim())) {


                            propName = propName.trim();
                            propValue = propValue.trim();


                            PasswordManager passwordManager =
                                    PasswordManager.getInstance();
                            String key = eventSource.getName() + "." + propName;


                            if (passwordManager.isInitialized()
                                    && passwordManager.isTokenProtected(key)) {
                                eventSource.putConfigurationProperty(propName, propValue);
                                propValue = passwordManager.resolve(propValue);
                            }


                            manager.addProperty(propName, propValue);
                        }
                    }
                    eventSource.setSubscriptionManager(manager);
                    eventSource.getSubscriptionManager()
                            .init(); // Initialise before doing further processing, required for static subscriptions

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