dubbo源码学习笔记----Provider和Consumer

    <!-- provider's application name, used for tracing dependency relationship -->
    <dubbo:application name="demo-provider"/>

    <!-- use multicast registry center to export service -->
    <dubbo:registry address="multicast://224.5.6.7:1234"/>

    <!-- use dubbo protocol to export service on port 20880 -->
    <dubbo:protocol name="dubbo" port="20880"/>

    <!-- service implementation, as same as regular local bean -->
    <bean id="demoService" class="com.alibaba.dubbo.demo.provider.DemoServiceImpl"/>

    <!-- declare the service interface to be exported -->
    <dubbo:service interface="com.alibaba.dubbo.demo.DemoService" ref="demoService"/>

    <!-- consumer's application name, used for tracing dependency relationship (not a matching criterion),
    don't set it same as provider -->
    <dubbo:application name="demo-consumer"/>

    <!-- use multicast registry center to discover service -->
    <dubbo:registry address="multicast://224.5.6.7:1234"/>

    <!-- generate proxy for the remote service, then demoService can be used in the same way as the
    local regular interface -->
    <dubbo:reference id="demoService" check="false" interface="com.alibaba.dubbo.demo.DemoService"/>

public class ProviderMethodModel {    private transient final Method method;    private final String methodName;    private final String[] methodArgTypes;    private final String serviceName;    public ProviderMethodModel(Method method, String serviceName) {        this.method = method;        this.serviceName = serviceName;        this.methodName = method.getName();        this.methodArgTypes = getArgTypes(method);
    }

public class ProviderModel {    private final String serviceName;    private final Object serviceInstance;    private final ServiceConfig metadata;    private final Map<String, List<ProviderMethodModel>> methods = new HashMap<String, List<ProviderMethodModel>>();    public ProviderModel(String serviceName, ServiceConfig metadata, Object serviceInstance) {        if (null == serviceInstance) {            throw new IllegalArgumentException("Service[" + serviceName + "]Target is NULL.");
        }        this.serviceName = serviceName;        this.metadata = metadata;        this.serviceInstance = serviceInstance;

        initMethod();
    }

    /**
     * full qualified class name -> provided service
     */
    private static final ConcurrentMap<String, ProviderModel> providedServices = new ConcurrentHashMap<String, ProviderModel>();    /**
     * full qualified class name -> subscribe service
     */
    private static final ConcurrentMap<String, ConsumerModel> consumedServices = new ConcurrentHashMap<String, ConsumerModel>();

public @interface Service {

    Class<?> interfaceClass() default void.class;    String interfaceName() default "";    String version() default "";    String group() default "";    String path() default "";

    public ServiceConfig(Service service) {
        appendAnnotation(Service.class, service);
    }