Examples with RpcException org.apache.dubbo.rpc.RpcException used on opensource projects

Example 11 with RpcException

use of org.apache.dubbo.rpc.RpcException in project dubbo by alibaba.

the class EtcdRegistry method doSubscribe.

@Override
public void doSubscribe(URL url, NotifyListener listener) {
    try {
        if (ANY_VALUE.equals(url.getServiceInterface())) {
            String root = toRootPath();
            /*
                 *  if we are interested in all interfaces,
                 *  find out the current container or create one for the url, put or get only once.
                 */
            ConcurrentMap<NotifyListener, ChildListener> listeners = Optional.ofNullable(etcdListeners.get(url)).orElseGet(() -> {
                ConcurrentMap<NotifyListener, ChildListener> container, prev;
                prev = etcdListeners.putIfAbsent(url, container = new ConcurrentHashMap<>());
                return prev != null ? prev : container;
            });
            /*
                 *  if we have no interface watcher listener,
                 *  find the current listener or create one for the current root, put or get only once.
                 */
            ChildListener interfaceListener = Optional.ofNullable(listeners.get(listener)).orElseGet(() -> {
                ChildListener childListener, prev;
                prev = listeners.putIfAbsent(listener, childListener = (parentPath, currentChildren) -> {
                    /*
                                         *  because etcd3 does not support direct children watch events,
                                         *  we should filter not interface events. if we watch /dubbo
                                         *  and /dubbo/interface, when we put a key-value pair {/dubbo/interface/hello hello},
                                         *  we will got events in watching path /dubbo.
                                         */
                    for (String child : currentChildren) {
                        child = URL.decode(child);
                        if (!anyServices.contains(child)) {
                            anyServices.add(child);
                            /*
                                                 *  if new interface event arrived, we watch their direct children,
                                                 *  eg: /dubbo/interface, /dubbo/interface and so on.
                                                 */
                            subscribe(url.setPath(child).addParameters(INTERFACE_KEY, child, CHECK_KEY, String.valueOf(false)), listener);
                        }
                    }
                });
                return prev != null ? prev : childListener;
            });
            etcdClient.create(root);
            /*
                 * at the first time, we want to pull already interface and then watch their direct children,
                 *  eg: /dubbo/interface, /dubbo/interface and so on.
                 */
            List<String> services = etcdClient.addChildListener(root, interfaceListener);
            for (String service : services) {
                service = URL.decode(service);
                anyServices.add(service);
                subscribe(url.setPath(service).addParameters(INTERFACE_KEY, service, CHECK_KEY, String.valueOf(false)), listener);
            }
        } else {
            List<URL> urls = new ArrayList<>();
            for (String path : toCategoriesPath(url)) {
                /*
                     *  if we are interested in special categories (providers, consumers, routers and so on),
                     *  we find out the current container or create one for the url, put or get only once.
                     */
                ConcurrentMap<NotifyListener, ChildListener> listeners = Optional.ofNullable(etcdListeners.get(url)).orElseGet(() -> {
                    ConcurrentMap<NotifyListener, ChildListener> container, prev;
                    prev = etcdListeners.putIfAbsent(url, container = new ConcurrentHashMap<>());
                    return prev != null ? prev : container;
                });
                /*
                     *  if we have no category watcher listener,
                     *  we find out the current listener or create one for the current category, put or get only once.
                     */
                ChildListener childListener = Optional.ofNullable(listeners.get(listener)).orElseGet(() -> {
                    ChildListener watchListener, prev;
                    prev = listeners.putIfAbsent(listener, watchListener = (parentPath, currentChildren) -> EtcdRegistry.this.notify(url, listener, toUrlsWithEmpty(url, parentPath, currentChildren)));
                    return prev != null ? prev : watchListener;
                });
                etcdClient.create(path);
                /*
                     * at the first time, we want to pull already category and then watch their direct children,
                     *  eg: /dubbo/interface/providers, /dubbo/interface/consumers and so on.
                     */
                List<String> children = etcdClient.addChildListener(path, childListener);
                if (children != null) {
                    urls.addAll(toUrlsWithEmpty(url, path, children));
                }
            }
            notify(url, listener, urls);
        }
    } catch (Throwable e) {
        throw new RpcException("Failed to subscribe " + url + " to etcd " + getUrl() + ", cause: " + (OptionUtil.isProtocolError(e) ? "etcd3 registry may not be supported yet or etcd3 registry is not available." : e.getMessage()), e);
    }
}

Example 12 with RpcException

use of org.apache.dubbo.rpc.RpcException in project dubbo by alibaba.

the class EtcdRegistry method doUnregister.

@Override
public void doUnregister(URL url) {
    try {
        String path = toUrlPath(url);
        etcdClient.delete(path);
    } catch (Throwable e) {
        throw new RpcException("Failed to unregister " + url + " to etcd " + getUrl() + ", cause: " + e.getMessage(), e);
    }
}

Example 13 with RpcException

use of org.apache.dubbo.rpc.RpcException in project dubbo by alibaba.

the class ConsulRegistry method lookup.

@Override
public List<URL> lookup(URL url) {
    if (url == null) {
        throw new IllegalArgumentException("lookup url == null");
    }
    try {
        String service = url.getServiceKey();
        Response<List<HealthService>> result = getHealthServices(service, DEFAULT_INDEX, buildWatchTimeout(url));
        if (result == null || result.getValue() == null || result.getValue().isEmpty()) {
            return new ArrayList<>();
        } else {
            return convert(result.getValue(), url);
        }
    } catch (Throwable e) {
        throw new RpcException("Failed to lookup " + url + " from consul " + getUrl() + ", cause: " + e.getMessage(), e);
    }
}

Example 14 with RpcException

use of org.apache.dubbo.rpc.RpcException in project dubbo by alibaba.

the class EtcdServiceDiscovery method doUpdate.

@Override
public void doUpdate(ServiceInstance serviceInstance) {
    try {
        String path = toPath(serviceInstance);
        etcdClient.putEphemeral(path, new Gson().toJson(serviceInstance));
        services.add(serviceInstance.getServiceName());
    } catch (Throwable e) {
        throw new RpcException("Failed to register " + serviceInstance + " to etcd " + etcdClient.getUrl() + ", cause: " + (OptionUtil.isProtocolError(e) ? "etcd3 registry may not be supported yet or etcd3 registry is not available." : e.getMessage()), e);
    }
}

Example 15 with RpcException

use of org.apache.dubbo.rpc.RpcException in project dubbo by alibaba.

the class EtcdServiceDiscovery method unregister.

@Override
public void unregister(ServiceInstance serviceInstance) throws RuntimeException {
    try {
        String path = toPath(serviceInstance);
        etcdClient.delete(path);
        services.remove(serviceInstance.getServiceName());
        this.serviceInstance = null;
    } catch (Throwable e) {
        throw new RpcException("Failed to unregister " + serviceInstance + " to etcd " + etcdClient.getUrl() + ", cause: " + e.getMessage(), e);
    }
}