{"id":1826,"date":"2019-05-05T08:08:47","date_gmt":"2019-05-05T00:08:47","guid":{"rendered":"https:\/\/coderbee.net\/?p=1826"},"modified":"2020-04-29T16:53:55","modified_gmt":"2020-04-29T08:53:55","slug":"motan-rpc-%e6%a1%86%e6%9e%b6%e5%88%86%e6%9e%90","status":"publish","type":"post","link":"https:\/\/coderbee.net\/index.php\/framework\/20190505\/1826","title":{"rendered":"Motan RPC \u6846\u67b6\u5206\u6790"},"content":{"rendered":"

\u4e00\u3001\u6846\u67b6\u7b80\u4ecb<\/h1>\n

Motan \u662f\u65b0\u6d6a\u5fae\u535a\u5f00\u6e90\u7684\u4e00\u5957\u9ad8\u6027\u80fd\u3001\u6613\u4e8e\u4f7f\u7528\u7684\u5206\u5e03\u5f0f\u8fdc\u7a0b\u670d\u52a1\u8c03\u7528(RPC)\u6846\u67b6\u3002
\n\"\"<\/p>\n

Motan \u7684\u6838\u5fc3\u6a21\u5757\u4ea4\u4e92\u5173\u7cfb\u5982\u4e0b\uff1a
\n\"\"<\/p>\n

\u4e8c\u3001\u6838\u5fc3\u6a21\u5757\u4ecb\u7ecd<\/h1>\n

2.0 SPI \u673a\u5236<\/h2>\n

SPI \u673a\u5236\u652f\u6301 JDK \u7684 ServiceProvider \u673a\u5236\u5e76\u8fdb\u884c\u4e86\u6269\u5c55\uff0c\u63a5\u53e3\u7684\u5b9e\u73b0\u653e\u5728 META-INF\/services\/<\/code> \u76ee\u5f55\u4e0b\u4ee5\u63a5\u53e3\u7684\u5b8c\u5168\u7c7b\u540d\u547d\u540d\u7684\u6587\u4ef6\u91cc\uff0c\u6bcf\u4e2a\u5b9e\u73b0\u7684\u5b8c\u5168\u7c7b\u540d\u5360\u4e00\u884c\u3002<\/p>\n

\u6bcf\u4e2a\u5b9e\u73b0\u7c7b\u53ef\u4ee5\u52a0\u4e0a\u6ce8\u89e3 @SpiMeta(name=\"implName\")<\/code> \u6765\u6307\u5b9a\u5b9e\u73b0\u540d\u79f0\uff0cExtensionLoader<\/code> \u53ef\u4ee5\u901a\u8fc7\u63a5\u53e3\u7c7b\u578b\u548c\u547d\u540d\u4ece\u591a\u4e2a\u5b9e\u73b0\u4e2d\u627e\u5230\u6307\u5b9a\u5b9e\u73b0\u3002<\/p>\n

<\/p>\n

2.1 register<\/h2>\n

\u7528\u6765\u548c\u6ce8\u518c\u4e2d\u5fc3\u4ea4\u4e92\uff0c\u5305\u62ec\u670d\u52a1\u6ce8\u518c\u3001\u8ba2\u9605\u670d\u52a1\u3001\u63a5\u6536\u670d\u52a1\u53d8\u66f4\u901a\u77e5\u3001\u53d1\u9001\u5fc3\u8df3\u7b49\u529f\u80fd\u3002<\/p>\n

\/\/ \u670d\u52a1\u53d1\u73b0\u529f\u80fd\u7684\u62bd\u8c61\npublic interface DiscoveryService {\n    \/\/ \u8ba2\u9605\u5230\u6ce8\u518c\u4e2d\u5fc3\n    void subscribe(URL url, NotifyListener listener);\n\n    \/\/ \u53d6\u6d88\u8ba2\u9605\n    void unsubscribe(URL url, NotifyListener listener);\n\n    \/\/ \u6839\u636e url \u63cf\u8ff0\u7684\u670d\u52a1\u4ece\u6ce8\u518c\u4e2d\u5fc3\u83b7\u53d6\u8be5\u670d\u52a1\u7684\u6240\u6709\u63d0\u4f9b\u8005\u7684\u4fe1\u606f\n    List<URL> discover(URL url);\n}\n\n\/\/ \u670d\u52a1\u6ce8\u518c\u529f\u80fd\u7684\u62bd\u8c61\npublic interface RegistryService {\n    void register(URL url);\n    void unregister(URL url);\n    void available(URL url);\n    void unavailable(URL url);\n    Collection<URL> getRegisteredServiceUrls();\n}\n\n\/\/ \u8868\u793a\u4e00\u4e2a\u6ce8\u518c\u4e2d\u5fc3\u7684\u62bd\u8c61\n@Spi(scope = Scope.SINGLETON)\npublic interface Registry extends RegistryService, DiscoveryService {\n    \/\/ \u83b7\u53d6\u8be5\u6ce8\u518c\u4e2d\u5fc3\u7684\u63cf\u8ff0\u4fe1\u606f\n    URL getUrl();\n}\n<\/code><\/pre>\n
2.2  protocol<\/h2>\n
\u7528\u6765\u8fdb\u884c RPC \u670d\u52a1\u63cf\u8ff0\u548c\u914d\u7f6e\u7ba1\u7406\uff0c\u53ef\u4ee5\u901a\u8fc7 Filter \u8fdb\u884c\u6269\u5c55\u3001\u529f\u80fd\u589e\u5f3a\u3002<\/p>\n
@Spi(scope = Scope.SINGLETON)\npublic interface Protocol {\n    \/\/ \u66b4\u9732\u670d\u52a1\n    <T> Exporter<T> export(Provider<T> provider, URL url);\n\n    \/\/ \u8c03\u7528\u7aef\u6536\u5230\u6ce8\u518c\u4e2d\u5fc3\u901a\u77e5\u7684\u670d\u52a1\u63d0\u4f9b\u8005\u5b9e\u4f8b\u4fe1\u606f serviceUrl \u540e\uff0c\n    \/\/ \u6839\u636e serviceUrl \u521b\u5efa\u5bf9\u6307\u5b9a\u5b9e\u4f8b\u7684\u5f15\u7528\n    <T> Referer<T> refer(Class<T> clz, URL url, URL serviceUrl);\n\n    void destroy();\n}\n\n\/\/ Filter \u7528\u4e8e\u8fdb\u884c\u529f\u80fd\u6269\u5c55\n@Spi\npublic interface Filter {\n    Response filter(Caller<?> caller, Request request);\n}\n\n\/\/ \u628a Filter \u5e94\u7528\u5230 protocol \u4e0a\uff0c\u8fdb\u884c\u529f\u80fd\u589e\u5f3a\npublic class ProtocolFilterDecorator implements Protocol {\n    private Protocol protocol;\n\n    public ProtocolFilterDecorator(Protocol protocol) {\n        this.protocol = protocol;\n    }\n\n    @Override\n    public <T> Exporter<T> export(Provider<T> provider, URL url) {\n        \/\/ \u5bf9\u539f\u59cb\u7684 provider \u8fdb\u884c\u5305\u88c5\u589e\u5f3a\n        return protocol.export(decorateWithFilter(provider, url), url);\n    }\n\n    @Override\n    public <T> Referer<T> refer(Class<T> clz, URL url, URL serviceUrl) {\n        \/\/ \u5bf9\u539f\u59cb protocol \u751f\u6210\u7684 Referer \u8fdb\u884c\u5305\u88c5\u589e\u5f3a\uff0c\u8fd9\u6837\u53ef\u4ee5\u5728\u8c03\u7528\u524d\u3001\u540e\u8fdb\u884c\u5904\u7406\u3002\n        return decorateWithFilter(protocol.refer(clz, url, serviceUrl), url);\n    }\n\n    @Override\n    public void destroy() {\n        protocol.destroy();\n    }\n\n  \/\/ \u7701\u7565\u5176\u5b83\u4ee3\u7801\n}\n<\/code><\/pre>\n
2.3  serialize<\/h2>\n
\u6b64\u6a21\u5757\u8d1f\u8d23\u628a\u8bf7\u6c42\u3001\u54cd\u5e94\u8fdb\u884c\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\u3002\u9ed8\u8ba4\u91c7\u7528 Hessian2 \u3002<\/p>\n
@Spi(scope=Scope.PROTOTYPE)\npublic interface Serialization {\n    byte[] serialize(Object obj) throws IOException;\n    <T> T deserialize(byte[] bytes, Class<T> clz) throws IOException;\n    byte[] serializeMulti(Object[] data) throws IOException;\n    Object[] deserializeMulti(byte[] data, Class<?>[] classes) throws IOException;\n\n    \/**\n     * serializaion\u7684\u552f\u4e00\u7f16\u53f7\uff0c\u7528\u4e8e\u4f20\u8f93\u534f\u8bae\u4e2d\u6307\u5b9a\u5e8f\u5217\u5316\u65b9\u5f0f\u3002\u6bcf\u79cd\u5e8f\u5217\u5316\u7684\u7f16\u53f7\u5fc5\u987b\u552f\u4e00\u3002\n     * @return \u7531\u4e8e\u7f16\u7801\u89c4\u8303\u9650\u5236\uff0c\u5e8f\u5217\u5316\u65b9\u5f0f\u6700\u5927\u652f\u630132\u79cd\uff0c\u56e0\u6b64\u8fd4\u56de\u503c\u5fc5\u987b\u57280-31\u4e4b\u95f4\u3002\n     *\/\n    int getSerializationNumber();\n}\n<\/code><\/pre>\n
2.4  transport<\/h2>\n
\u5b9e\u73b0\u8fdc\u7a0b\u901a\u4fe1\uff0c\u9ed8\u8ba4\u91c7\u7528 Netty NIO \u7684 TCP \u957f\u94fe\u63a5\u5b9e\u73b0\u3002<\/p>\n
2.5  cluster<\/h2>\n
\u4ec5\u4f9b client \u7aef\u4f7f\u7528\u7684\u6a21\u5757\u3002<\/p>\n
Referer<\/code> \u5728\u521d\u59cb\u5316\u7684\u65f6\u5019\u4f1a\u8ba9\u6ce8\u518c\u4e2d\u5fc3\u76d1\u542c\u8981\u8c03\u7528\u7684\u670d\u52a1\u5730\u5740\uff0c\u76d1\u542c\u7684\u56de\u8c03\u5904\u7406\u8005\u662f ClusterSupport<\/code>\uff0c\u5f53\u670d\u52a1\u63d0\u4f9b\u8005\u7684\u5217\u8868\u53d8\u5316\u65f6\uff0c\u6ce8\u518c\u4e2d\u5fc3\u901a\u77e5 ClusterSupport<\/code> \u3002<\/p>\n
ClusterSupport<\/code> \u6536\u5230\u6ce8\u518c\u4e2d\u5fc3\u7684\u901a\u77e5\uff0c\u6839\u636e\u8fd9\u4e9b\u670d\u52a1\u63d0\u4f9b\u8005\u7684\u4fe1\u606f\u5229\u7528 Protocol<\/code> \u5b9e\u73b0\u751f\u6210\u4e00\u7ec4 Referer<\/code> \u5bf9\u8c61\uff0c\u7136\u540e\u7528\u8fd9\u7ec4 Referer \u901a\u77e5 Cluster\uff0cCluster \u518d\u7528\u8fd9\u4e9b Referer \u5237\u65b0\u6301\u6709\u7684 LoadBalance \u3002<\/p>\n
\u6784\u5efa Referer<\/code> \u7684\u65f6\u5019\u4f1a\u5b9e\u4f8b\u5316 Client<\/code>\uff0c\u4ee5\u5b8c\u6210\u8fdc\u7a0b\u8c03\u7528\u3002Client<\/code> \u4f4d\u4e8e\u4f20\u8f93\u5c42\uff0c\u5b8c\u6210\u8bf7\u6c42\u3001\u54cd\u5e94\u7684\u7f16\u7801\u3001\u89e3\u7801\u5de5\u4f5c\uff0c\u7136\u540e\u8fdb\u884c\u5e8f\u5217\u5316\u3001\u53cd\u5e8f\u5217\u5316\uff0c\u518d\u901a\u8fc7 Channel<\/code> \u8fdb\u884c\u7f51\u7edc\u4f20\u8f93\u3002<\/p>\n
2.6 Filter<\/h2>\n
Motan \u63d0\u4f9b Filter \u673a\u5236\u6765\u8fdb\u884c\u529f\u80fd\u589e\u5f3a\uff0c\u9ed8\u8ba4\u652f\u6301\u8bbf\u95ee\u65e5\u5fd7\u3001\u8bbf\u95ee\u7edf\u8ba1\u3001\u63a5\u53e3\u5e76\u53d1\u63a7\u5236\u3001\u670d\u52a1\u5f00\u5173\u3001\u670d\u52a1 Mock\u3001\u670d\u52a1\u964d\u7ea7\u63a7\u5236\u7b49\u3002<\/p>\n
@Spi\npublic interface Filter {\n\n    Response filter(Caller<?> caller, Request request);\n}\n<\/code><\/pre>\n
\u5728 Filter \u7684\u5177\u4f53\u5b9e\u73b0\u91cc\uff0c\u53ef\u4ee5\u6839\u636e Caller<\/code> \u662f Provider\/Referer<\/code> \u7684\u5b9e\u73b0\u6765\u51b3\u5b9a\u6267\u884c\u5ba2\u6237\u7aef\u8fd8\u662f\u670d\u52a1\u7aef\u7684\u903b\u8f91\u3002<\/p>\n
\u4e8c\u3001\u6784\u5efa\u5ba2\u6237\u7aef\u4ee3\u7406<\/h1>\n
\u521b\u5efa\u670d\u52a1\u7684\u4ee3\u7406\u7684\u8fc7\u7a0b\uff1a
\n1. \u6536\u96c6\u670d\u52a1\u7684\u63cf\u8ff0\u4fe1\u606f refUrl \uff1b
\n2. \u6839\u636e refUrl \u548c registryUrl \u521b\u5efa ClusterSupport\uff1b
\n3. \u6839\u636e interfaceClass \u548c ClusterSupport.getCluster() \u521b\u5efa\u4ee3\u7406\u5bf9\u8c61\uff1b
\n4. \u4ee5\u4ee3\u7406\u5bf9\u8c61 RefererInvocationHandler \u4e3a\u4f8b\uff0c\u5b83\u6301\u6709 Cluster \u5c31\u53ef\u4ee5\u8fdb\u884c\u8fdc\u7a0b\u8c03\u7528\u3002<\/p>\n
public class DefaultRpcReferer<T> extends AbstractReferer<T> {\n    protected Client client;\n    protected EndpointFactory endpointFactory;\n\n    public DefaultRpcReferer(Class<T> clz, URL url, URL serviceUrl) {\n        super(clz, url, serviceUrl);\n\n        endpointFactory =\n                ExtensionLoader.getExtensionLoader(EndpointFactory.class).getExtension(\n                        url.getParameter(URLParamType.endpointFactory.getName(), URLParamType.endpointFactory.getValue()));\n\n        \/\/ \u521b\u5efa Client\n        client = endpointFactory.createClient(url);\n    }\n\n    @Override\n    protected Response doCall(Request request) {\n        try {\n            \/\/ \u4e3a\u4e86\u80fd\u591f\u5b9e\u73b0\u8de8group\u8bf7\u6c42\uff0c\u9700\u8981\u4f7f\u7528server\u7aef\u7684group\u3002\n            request.setAttachment(URLParamType.group.getName(), serviceUrl.getGroup());\n\n            \/\/ \u901a\u8fc7 Client \u5b8c\u6210\u8fdc\u7a0b\u8c03\u7528\n            return client.request(request);\n        } catch (TransportException exception) {\n            throw new MotanServiceException(\"DefaultRpcReferer call Error: url=\" + url.getUri(), exception);\n        }\n    }\n\n    \/\/ \u7701\u7565\u5176\u4ed6\u4ee3\u7801   \n}\n<\/code><\/pre>\n
\u4e09\u3001\u670d\u52a1\u7aef\u66b4\u9732\u670d\u52a1<\/h1>\n
\u670d\u52a1\u7aef\u5bf9\u5916\u66b4\u9732\u670d\u52a1\u8981\u8003\u8651\u4e24\u70b9\uff1a<\/p>\n
    \n
  1. \u4e00\u4e2a\u7f51\u7edc\u7aef\u53e3\u6709\u591a\u4e2a\u670d\u52a1\u63d0\u4f9b\u8005\uff0c\u5982\u4f55\u627e\u5230\u76ee\u6807\u63d0\u4f9b\u8005\uff1f
    \n\u5728transport\u5c42\u5b9e\u73b0\uff0cProviderMessageRouter<\/code> \u76f8\u5f53\u4e8e\u4e00\u4e2a\u8bf7\u6c42\u5206\u53d1\u5668\uff0c\u628a\u8bf7\u6c42\u5206\u53d1\u8c03\u7528\u76ee\u524d\u63d0\u4f9b\u8005\u3002\u5206\u53d1\u662f\u6839\u636e\u670d\u52a1\u63cf\u8ff0 URL \u91cc\u7684\u5173\u952e\u4fe1\u606f\u751f\u6210 serviceKey \uff08\u7ec4\u6210: group + \"\/\" + interfaceName + \"\/\" + version<\/code>\uff09\u6765\u786e\u5b9a\u63d0\u4f9b\u8005\uff0c\u518d\u6839\u636e\u8bf7\u6c42\u91cc\u7684\u65b9\u6cd5\u540d\u3001\u65b9\u6cd5\u53c2\u6570\u63cf\u8ff0\u6765\u5b9a\u4f4d\u8981\u8c03\u7528\u7684 Method \u3002<\/li>\n<\/ol>\n
    public class ProviderMessageRouter implements MessageHandler {\n    \/\/ serviceKey \u5230\u5177\u4f53\u670d\u52a1\u63d0\u4f9b\u8005\u7684\u6620\u5c04\n    protected Map<String, Provider<?>> providers = new HashMap<>();\n\n    public Object handle(Channel channel, Object message) {\n        Request request = (Request) message;\n\n        String serviceKey = MotanFrameworkUtil.getServiceKey(request);\n\n        Provider<?> provider = providers.get(serviceKey);\n\n        Method method = provider.lookupMethod(request.getMethodName(), request.getParamtersDesc());\n        fillParamDesc(request, method);\n        processLazyDeserialize(request, method);\n        return call(request, provider);\n    }\n\n    protected Response call(Request request, Provider<?> provider) {\n        try {\n            return provider.call(request);\n        } catch (Exception e) {\n            DefaultResponse response = new DefaultResponse();\n            response.setException(new MotanBizException(\"provider call process error\", e));\n            return response;\n        }\n    }\n\n    public synchronized void addProvider(Provider<?> provider) {\n        String serviceKey = MotanFrameworkUtil.getServiceKey(provider.getUrl());\n        if (providers.containsKey(serviceKey)) {\n            throw new MotanFrameworkException(\"provider alread exist: \" + serviceKey);\n        }\n\n        providers.put(serviceKey, provider);\n    }\n}\n<\/code><\/pre>\n
      \n
    1. \u6709\u4e86\u8bf7\u6c42\u5206\u53d1\u5904\u7406\u5668\u540e\uff0c\u5c31\u53ef\u4ee5\u4f5c\u4e3a Server \u7684\u6d88\u606f\u5904\u7406\u5668\u3002<\/li>\n<\/ol>\n
      public class DefaultRpcExporter<T> extends AbstractExporter<T> {\n    protected final ConcurrentHashMap<String, ProviderMessageRouter> ipPort2RequestRouter;\n    protected final ConcurrentHashMap<String, Exporter<?>> exporterMap;\n    protected Server server;\n    protected EndpointFactory endpointFactory;\n\n    public DefaultRpcExporter(Provider<T> provider, URL url, ConcurrentHashMap<String, ProviderMessageRouter> ipPort2RequestRouter,\n                              ConcurrentHashMap<String, Exporter<?>> exporterMap) {\n        super(provider, url);\n        this.exporterMap = exporterMap;\n        this.ipPort2RequestRouter = ipPort2RequestRouter;\n\n        \/\/ \u521d\u59cb\u5316\u6d88\u606f\u5206\u53d1\u5904\u7406\u5668\n        ProviderMessageRouter requestRouter = initRequestRouter(url);\n        endpointFactory =\n                ExtensionLoader.getExtensionLoader(EndpointFactory.class).getExtension(\n                        url.getParameter(URLParamType.endpointFactory.getName(), URLParamType.endpointFactory.getValue()));\n\n        \/\/ \u521b\u5efa Server\n        server = endpointFactory.createServer(url, requestRouter);\n    }\n}\n\n\npublic abstract class AbstractEndpointFactory implements EndpointFactory {\n    \/** \u7ef4\u6301share channel \u7684service\u5217\u8868 **\/\n    protected Map<String, Server> ipPort2ServerShareChannel = new HashMap<String, Server>();\n    protected ConcurrentMap<Server, Set<String>> server2UrlsShareChannel = new ConcurrentHashMap<Server, Set<String>>();\n\n    private EndpointManager heartbeatClientEndpointManager = null;\n\n    public AbstractEndpointFactory() {\n        \/\/ \u5fc3\u8df3\u7ba1\u7406\n        heartbeatClientEndpointManager = new HeartbeatClientEndpointManager();\n        heartbeatClientEndpointManager.init();\n    }\n\n    public Server createServer(URL url, MessageHandler messageHandler) {\n        messageHandler = getHeartbeatFactory(url).wrapMessageHandler(messageHandler);\n\n        synchronized (ipPort2ServerShareChannel) {\n            String ipPort = url.getServerPortStr();\n            String protocolKey = MotanFrameworkUtil.getProtocolKey(url);\n\n            boolean shareChannel =\n                    url.getBooleanParameter(URLParamType.shareChannel.getName(), URLParamType.shareChannel.getBooleanValue());\n\n            if (!shareChannel) { \/\/ \u72ec\u4eab\u4e00\u4e2a\u7aef\u53e3\n                LoggerUtil.info(this.getClass().getSimpleName() + \" create no_share_channel server: url={}\", url);\n\n                \/\/ \u5982\u679c\u7aef\u53e3\u5df2\u7ecf\u88ab\u4f7f\u7528\u4e86\uff0c\u4f7f\u7528\u8be5server bind \u4f1a\u6709\u5f02\u5e38\n                return innerCreateServer(url, messageHandler);\n            }\n\n            Server server = ipPort2ServerShareChannel.get(ipPort);\n\n            if (server != null) {\n                \/\/ \u7701\u7565\uff1a\u65e0\u6cd5\u5171\u4eab channel \u7684\u629b\u51fa\u5f02\u5e38\u3002\n\n                saveEndpoint2Urls(server2UrlsShareChannel, server, protocolKey);\n\n                \/\/ \u5171\u4eab\u5df2\u7ecf\u5b58\u5728\u7684 Server\n                return server;\n            }\n\n            url = url.createCopy();\n            url.setPath(\"\"); \/\/ \u5171\u4eabserver\u7aef\u53e3\uff0c\u7531\u4e8e\u6709\u591a\u4e2ainterfaces\u5b58\u5728\uff0c\u6240\u4ee5\u628apath\u8bbe\u7f6e\u4e3a\u7a7a\n\n            \/\/ ipPort \u4e0a\u8fd8\u6ca1\u521b\u5efa\u8fc7 Server\uff0c\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\n            server = innerCreateServer(url, messageHandler);\n\n            ipPort2ServerShareChannel.put(ipPort, server);\n            saveEndpoint2Urls(server2UrlsShareChannel, server, protocolKey);\n\n            return server;\n        }\n    }\n}\n<\/code><\/pre>\n
      \u56db\u3001\u8c03\u7528\u8fc7\u7a0b\u5b9e\u73b0<\/h1>\n
        \n
      1. \n
        Cluster \u6536\u5230\u8c03\u7528\u8bf7\u6c42\u540e\uff0c\u901a\u8fc7\u81ea\u8eab\u7684 HA \u7b56\u7565\u8fdb\u884c\u8c03\u7528\uff1b<\/p>\n<\/li>\n
      2. \n
        HA \u7b56\u7565\u5b9e\u73b0\u6839\u636e\u4f20\u5165 LB \u83b7\u53d6\u5230\u4e00\u4e2a Referer \u5b9e\u4f8b\u8fdb\u884c\u8c03\u7528\uff1b<\/p>\n<\/li>\n
      3. \n
        \u6839\u636e Referer \u7684\u8c03\u7528\u7ed3\u679c\u6765\u6267\u884c HA \u7b56\u7565\u3002<\/p>\n<\/li>\n<\/ol>\n
        \/\/ ClusterSpi.java\npublic Response call(Request request) {\n    if (available.get()) {\n        try {\n            return haStrategy.call(request, loadBalance);\n        } catch (Exception e) {\n            return callFalse(request, e);\n        }\n    }\n    return callFalse(request, new MotanServiceException(MotanErrorMsgConstant.SERVICE_UNFOUND));\n}\n\n@SpiMeta(name = \"failfast\")\npublic class FailfastHaStrategy<T> extends AbstractHaStrategy<T> {\n    @Override\n    public Response call(Request request, LoadBalance<T> loadBalance) {\n        Referer<T> refer = loadBalance.select(request);\n        return refer.call(request);\n    }\n}\n<\/code><\/pre>\n
        \u30004. Referer \u901a\u8fc7\u6301\u6709\u7684 Client \u8fdb\u884c\u8c03\u7528\uff1b<\/p>\n
        \u30005. Client \u8c03\u7528\u65f6\u4ece Channel \u8fde\u63a5\u6c60\u83b7\u53d6\u5230\u4e00\u4e2a Channel \u540e\u518d\u8fdb\u884c\u5199\u5165\u8bf7\u6c42\uff1b<\/p>\n
        \u30006. Channel \u9996\u5148\u7ed9\u8bf7\u6c42\u751f\u6210\u4e00\u4e2a ResponseFuture\uff0c\u6ce8\u518c\u5230 Client \u7684 callbackMap \u4e0a\uff0c\u8fd9\u6837\u53ef\u4ee5\u963b\u585e\u4f4f\u8c03\u7528\u7ebf\u7a0b\uff0c\u5b9e\u73b0\u540c\u6b65\u8c03\u7528\uff0c\u4e5f\u65b9\u4fbf\u6536\u5230\u54cd\u5e94\u65f6\u627e\u5230\u5bf9\u5e94\u7684\u8c03\u7528\u7ebf\u7a0b\uff1b<\/p>\n
        \u30007. Channel \u5bf9\u4e8e\u5199\u5165\u7684\u8bf7\u6c42\u6839\u636e Client \u5728 Netty pipeline \u4e0a\u8bbe\u7f6e\u7684 codec \u7ec4\u4ef6\u8fdb\u884c\u7f16\u7801\u3001\u89e3\u7801\u64cd\u4f5c\uff1b<\/p>\n
        \u30008. codec \u4f1a\u7528 Serialization \u7ec4\u4ef6\u8fdb\u884c\u5e8f\u5217\u5316\u3001\u53cd\u5e8f\u5217\u5316\uff1b<\/p>\n
        \u30009. \u6700\u7ec8\u628a\u5e8f\u5217\u5316\u540e\u7684\u8bf7\u6c42\u5199\u5165\u7f51\u7edc\u8fde\u63a5\u3002<\/p>\n
        \u300010. \u670d\u52a1\u7aef\u7684\u7f51\u7edc\u76d1\u542c\u63a5\u6536\u5230\u8bf7\u6c42\u540e\uff0c\u7528 codec \u7ec4\u4ef6\u8fdb\u884c\u53cd\u5e8f\u5217\u5316\u3001\u89e3\u7801\u5f97\u5230\u4e00\u4e2a\u8bf7\u6c42\u5bf9\u8c61\uff1b<\/p>\n
        \u300011. Server \u7684\u6d88\u606f\u5904\u7406\u5668 ProviderMessageRouter.handle(Channel channel, Object message)<\/code>  \u65b9\u6cd5\u91cc\uff0c\u6839\u636e\u8bf7\u6c42\u4fe1\u606f\u5f97\u5230\u8981\u8c03\u7528\u7684 serviceKey\uff0c \u4ece\u800c\u627e\u5230\u5bf9\u5e94\u7684 provider \uff1b<\/p>\n
        \u300012. \u518d\u6839\u636e\u8981\u8c03\u7528\u7684\u65b9\u6cd5\u540d\u3001\u53c2\u6570\u4fe1\u606f\u627e\u5230\u5bf9\u5e94\u7684\u5b9e\u73b0\u65b9\u6cd5\uff0c\u8fdb\u884c\u8c03\u7528\uff0c\u5f97\u5230\u54cd\u5e94\uff1b<\/p>\n
        \u300013. \u518d\u628a\u54cd\u5e94\u5199\u56de\u5230\u7f51\u7edc\u8fde\u63a5\u91cc\uff1b<\/p>\n
        \u300014. \u5ba2\u6237\u7aef\u6700\u7ec8\u5f97\u5230\u54cd\u5e94\u5bf9\u8c61\u540e\uff0c\u4ece Client \u7ef4\u62a4\u7684 callbackMap \u627e\u51fa\u8bf7\u6c42 \u7684 ResponseFuture \u5e76\u8bbe\u7f6e\u7ed3\u679c\uff0c\u4f7f\u8c03\u7528\u7ebf\u7a0b\u53ef\u4ee5\u8fd4\u56de\u3002<\/p>\n
        \n
        \u6b22\u8fce\u5173\u6ce8\u6211\u7684\u5fae\u4fe1\u516c\u4f17\u53f7: coderbee\u7b14\u8bb0<\/strong>\uff0c\u53ef\u4ee5\u66f4\u53ca\u65f6\u56de\u590d\u4f60\u7684\u8ba8\u8bba\u3002
        \n<\/p>\n","protected":false},"excerpt":{"rendered":"
        \u4e00\u3001\u6846\u67b6\u7b80\u4ecb Motan \u662f\u65b0\u6d6a\u5fae\u535a\u5f00\u6e90\u7684\u4e00\u5957\u9ad8\u6027\u80fd\u3001\u6613\u4e8e\u4f7f\u7528\u7684\u5206\u5e03\u5f0f\u8fdc\u7a0b\u670d\u52a1\u8c03 … \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[255],"tags":[312,313],"_links":{"self":[{"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/posts\/1826"}],"collection":[{"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/comments?post=1826"}],"version-history":[{"count":12,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/posts\/1826\/revisions"}],"predecessor-version":[{"id":2071,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/posts\/1826\/revisions\/2071"}],"wp:attachment":[{"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/media?parent=1826"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/categories?post=1826"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/tags?post=1826"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}