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Posted to commits@dubbo.apache.org by me...@apache.org on 2019/08/16 03:42:31 UTC

[dubbo] branch cloud-native updated: [Feature] Enhance the Event-Publishing feature to original ServiceDiscovery (#4846)

This is an automated email from the ASF dual-hosted git repository.

mercyblitz pushed a commit to branch cloud-native
in repository https://gitbox.apache.org/repos/asf/dubbo.git


The following commit(s) were added to refs/heads/cloud-native by this push:
     new d9cc75f  [Feature] Enhance the Event-Publishing feature to original ServiceDiscovery (#4846)
d9cc75f is described below

commit d9cc75f65c2b61e66746ce462087c6e8e7692f12
Author: Mercy Ma <me...@gmail.com>
AuthorDate: Fri Aug 16 11:42:25 2019 +0800

    [Feature] Enhance the Event-Publishing feature to original ServiceDiscovery (#4846)
    
    * Polish apache/dubbo#4542 : [Enhancement] Adapt the Java standard Event/Listener mechanism
    
    * Polish apache/dubbo#4541 : [Feature] Add local File System DynamicConfigurationFactory‘s extension
    
    * Polish apache#4541 : Bugfix
    
    * Polish apache/dubbo#4541 : Optimization
    
    * Polish apache/dubbo#4541 : Add the compatibility for PollingWatchService on the some platforms
    
    * Polish apache/dubbo#4541 : Add delay publish without ThreadPoolExecutor
    
    * Polish apache/dubbo#4541 : Refactor the extension name
    
    * Polish apache/dubbo#4541 : Add remove ops
    
    * Polish apache/dubbo#4541 : Add testable constructor
    
    * Polish apache/dubbo#4541 : Add getConfigGroups method
    
    * Polish apache/dubbo#4610 : [Refactor] Refactor the bootstrap module
    
    * Polish apache/dubbo#4541 : Fix the nulling URL issue
    
    * Polish apache/dubbo#4622 : [Refactor] Refactor ConfigManager
    
    * Polish apache/dubbo#4622 : [Refactor] Refactor ConfigManager
    
    * Polish apache/dubbo#4622 : Support multiple configcenters
    
    * Polish apache/dubbo#4671 : ServiceNameMapping will not map the group, version and protocol
    
    * update referenceCount log (#4683)
    
    Add comments to support multiple shared connections
    
    * Polish /apache/dubbo#4687 : Remove the duplicated test code in dubbo-config-spring (#4688)
    
    * #4685  修改代码if判断false问题 if (hasException == false)修改成if (!hasException) (#4695)
    
    * Fixed Service annotation method parameters are not in effect (#4598)
    
    * keep demo simple, and switch to use zookeeper as registry center (#4705)
    
    * keep demo simple, and switch to use zookeeper as registry center
    
    * remove comment
    
    * @Reference auto-wires the instance of generic interface #4594 (#4677)
    
    * try to shorten maven output to make travis build pass (#4710)
    
    * use CountDownLatch to check zk registry if establish connection (#4589)
    
    * Minor change
    
    * Rename the extension name of WritableMetadataService
    
    * Polish apache/dubbo#4759 : [Refactor] Change the signature of methods of MetadataService #4759
    
    * Merge remote-tracking branch 'upstream/master' into dubbo-cloud-native
    
    # Conflicts:
    #	dubbo-all/pom.xml
    #	dubbo-bom/pom.xml
    #	dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/AbstractInterfaceConfig.java
    #	dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/ApplicationConfig.java
    #	dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/ConfigCenterConfig.java
    #	dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/ReferenceConfig.java
    #	dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/RegistryConfig.java
    #	dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/ServiceConfig.java
    #	dubbo-config/dubbo-config-api/src/test/java/org/apache/dubbo/config/ReferenceConfigTest.java
    #	dubbo-configcenter/dubbo-configcenter-api/src/main/java/org/apache/dubbo/configcenter/DynamicConfiguration.java
    #	dubbo-configcenter/dubbo-configcenter-api/src/test/java/org/apache/dubbo/configcenter/mock/MockDynamicConfiguration.java
    #	dubbo-configcenter/dubbo-configcenter-consul/src/main/java/org/apache/dubbo/configcenter/consul/ConsulDynamicConfiguration.java
    #	dubbo-configcenter/dubbo-configcenter-etcd/src/test/java/org/apache/dubbo/configcenter/support/etcd/EtcdDynamicConfigurationTest.java
    #	dubbo-configcenter/dubbo-configcenter-nacos/src/main/java/org/apache/dubbo/configcenter/support/nacos/NacosDynamicConfiguration.java
    #	dubbo-configcenter/dubbo-configcenter-nacos/src/test/java/org/apache/dubbo/configcenter/support/nacos/NacosDynamicConfigurationTest.java
    #	dubbo-configcenter/dubbo-configcenter-zookeeper/src/main/java/org/apache/dubbo/configcenter/support/zookeeper/ZookeeperDynamicConfiguration.java
    #	dubbo-metadata/dubbo-metadata-api/src/main/java/org/apache/dubbo/metadata/definition/model/MethodDefinition.java
    #	dubbo-metadata/dubbo-metadata-api/src/main/java/org/apache/dubbo/metadata/report/identifier/MetadataIdentifier.java
    #	dubbo-metadata/dubbo-metadata-api/src/main/java/org/apache/dubbo/metadata/report/support/AbstractMetadataReport.java
    #	dubbo-metadata/dubbo-metadata-api/src/test/java/org/apache/dubbo/metadata/report/identifier/MetadataIdentifierTest.java
    #	dubbo-metadata/dubbo-metadata-definition-protobuf/src/main/java/org/apache/dubbo/metadata/definition/protobuf/ProtobufTypeBuilder.java
    #	dubbo-metadata/dubbo-metadata-definition-protobuf/src/test/java/org/apache/dubbo/metadata/definition/protobuf/ProtobufTypeBuilderTest.java
    #	dubbo-metadata/pom.xml
    #	dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/integration/AbstractConfiguratorListener.java
    #	dubbo-registry/dubbo-registry-nacos/src/main/java/org/apache/dubbo/registry/nacos/NacosRegistry.java
    #	dubbo-registry/dubbo-registry-nacos/src/main/java/org/apache/dubbo/registry/nacos/NacosRegistryFactory.java
    #	dubbo-rpc/dubbo-rpc-xml/src/main/java/org/apache/dubbo/xml/rpc/protocol/xmlrpc/XmlRpcProtocol.java
    
    * Polish apache/dubbo#3984 : Add the implementation of Page<ServiceInstance> getInstances(String serviceName, int offset, int pageSize, boolean healthyOnly)
    
    * Code merge
    
    * Fix the cases
    
    * Merge remote-tracking branch 'upstream/cloud-native' into dubbo-cloud-native
    
    # Conflicts:
    #	dubbo-bootstrap/src/test/java/org/apache/dubbo/bootstrap/DubboServiceProviderBootstrap.java
    #	dubbo-metadata/dubbo-metadata-definition-protobuf/pom.xml
    #	dubbo-registry/dubbo-registry-api/src/test/java/org/apache/dubbo/registry/support/ServiceOrientedRegistryTest.java
    #	dubbo-registry/dubbo-registry-consul/src/main/java/org/apache/dubbo/registry/consul/ConsulServiceDiscoveryFactory.java
    #	dubbo-registry/dubbo-registry-etcd3/src/main/java/org/apache/dubbo/registry/etcd/EtcdServiceDiscovery.java
    
    * Refactor ConfigManager
    
    * Refactor ConfigManager
    
    * Resolve the issues on ConfigManager
    
    * Refactor and add test-cases for ConfigManager
    
    * Polish apache/dubbo#4774 : [Feature] Dubbo Cloud Native - To Support in Spring
    
    * Polish apache/dubbo#4808 : [Feature] Add the registered/unregistered event mechanism ShutdownHook
    
    * Polish apache/dubbo#4807 : [Feature] Add the callback mechanism ShutdownHook #4807
    
    * Polish apache/dubbo#4813 : [Feature] add Prioritized implementation for ServiceInstanceCustomizer
    
    * Polish apache/dubbo#4815 : [Feature] Add the ServiceLoader for Dubbo's services or components
    
    * Polish apache/dubbo#4815 : [Feature] Add the ServiceLoader for Dubbo's services or components
    
    * Polish apache/dubbo#4813 : [Feature] add Prioritized implementation for ServiceInstanceCustomizer
    
    * Polish apache/dubbo#4807 : Add sort implementation
    
    * Refactor
    
    * Refactor
    
    * Polish apache/dubbo#4845 : [Feature] Enhance the Event-Publishing feature to original ServiceDiscovery
---
 .../client/DefaultServiceDiscoveryFactory.java     | 18 ++++------
 .../registry/client/ServiceDiscoveryRegistry.java  | 41 ++++++++++++++--------
 2 files changed, 33 insertions(+), 26 deletions(-)

diff --git a/dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/client/DefaultServiceDiscoveryFactory.java b/dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/client/DefaultServiceDiscoveryFactory.java
index 0d38ace..c5f5fe4 100644
--- a/dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/client/DefaultServiceDiscoveryFactory.java
+++ b/dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/client/DefaultServiceDiscoveryFactory.java
@@ -33,21 +33,15 @@ import static org.apache.dubbo.common.extension.ExtensionLoader.getExtensionLoad
  * @since 2.7.4
  */
 public class DefaultServiceDiscoveryFactory extends AbstractServiceDiscoveryFactory {
-
-    @Override
-    protected ServiceDiscovery createDiscovery(URL connectionURL) {
-        ServiceDiscovery serviceDiscovery = load(connectionURL);
-        return new EventPublishingServiceDiscovery(serviceDiscovery);
-    }
-
     /**
-     * Load the {@link ServiceDiscovery} by {@link URL#getProtocol() the protocol} from {@link URL connection URL}
+     * Create the {@link ServiceDiscovery} by {@link URL#getProtocol() the protocol} from {@link URL connection URL}
      *
-     * @param connectionURL the {@link URL url} to connect
-     * @return non-null
+     * @param registryURL
+     * @return
      */
-    private ServiceDiscovery load(URL connectionURL) {
-        String protocol = connectionURL.getProtocol();
+    @Override
+    protected ServiceDiscovery createDiscovery(URL registryURL) {
+        String protocol = registryURL.getProtocol();
         ExtensionLoader<ServiceDiscovery> loader = getExtensionLoader(ServiceDiscovery.class);
         return loader.getOrDefaultExtension(protocol);
     }
diff --git a/dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/client/ServiceDiscoveryRegistry.java b/dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/client/ServiceDiscoveryRegistry.java
index 40d0a09..725963a 100644
--- a/dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/client/ServiceDiscoveryRegistry.java
+++ b/dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/client/ServiceDiscoveryRegistry.java
@@ -103,7 +103,7 @@ public class ServiceDiscoveryRegistry extends FailbackRegistry {
 
     public ServiceDiscoveryRegistry(URL registryURL) {
         super(registryURL);
-        this.serviceDiscovery = getServiceDiscovery(registryURL);
+        this.serviceDiscovery = createServiceDiscovery(registryURL);
         this.subscribedServices = getSubscribedServices(registryURL);
         this.serviceNameMapping = ServiceNameMapping.getDefaultExtension();
         String metadataStorageType = getMetadataStorageType(registryURL);
@@ -120,14 +120,14 @@ public class ServiceDiscoveryRegistry extends FailbackRegistry {
     }
 
     /**
-     * Get the {@link ServiceDiscovery} from the connection {@link URL}
+     * Create the {@link ServiceDiscovery} from the registry {@link URL}
      *
      * @param registryURL the {@link URL} to connect the registry
      * @return non-null
      */
-    protected ServiceDiscovery getServiceDiscovery(URL registryURL) {
-        ServiceDiscoveryFactory factory = getExtension(registryURL);
-        ServiceDiscovery serviceDiscovery = factory.getServiceDiscovery(registryURL);
+    protected ServiceDiscovery createServiceDiscovery(URL registryURL) {
+        ServiceDiscovery originalServiceDiscovery = getServiceDiscovery(registryURL);
+        ServiceDiscovery serviceDiscovery = enhanceEventPublishing(originalServiceDiscovery);
         execute(() -> {
             serviceDiscovery.initialize(registryURL.addParameter(INTERFACE_KEY, ServiceDiscovery.class.getName())
                     .removeParameter(REGISTRY_TYPE_KEY));
@@ -135,6 +135,28 @@ public class ServiceDiscoveryRegistry extends FailbackRegistry {
         return serviceDiscovery;
     }
 
+    /**
+     * Get the instance {@link ServiceDiscovery} from the registry {@link URL} using
+     * {@link ServiceDiscoveryFactory} SPI
+     *
+     * @param registryURL the {@link URL} to connect the registry
+     * @return
+     */
+    private ServiceDiscovery getServiceDiscovery(URL registryURL) {
+        ServiceDiscoveryFactory factory = getExtension(registryURL);
+        return factory.getServiceDiscovery(registryURL);
+    }
+
+    /**
+     * Enhance the original {@link ServiceDiscovery} with event publishing feature
+     *
+     * @param original the original {@link ServiceDiscovery}
+     * @return {@link EventPublishingServiceDiscovery} instance
+     */
+    private ServiceDiscovery enhanceEventPublishing(ServiceDiscovery original) {
+        return new EventPublishingServiceDiscovery(original);
+    }
+  
     protected boolean shouldRegister(URL providerURL) {
 
         String side = providerURL.getParameter(SIDE_KEY);
@@ -506,13 +528,4 @@ public class ServiceDiscoveryRegistry extends FailbackRegistry {
     public static boolean supports(URL registryURL) {
         return SERVICE_REGISTRY_TYPE.equalsIgnoreCase(registryURL.getParameter(REGISTRY_TYPE_KEY));
     }
-
-    /**
-     * Get the instance of {@link ServiceDiscovery}
-     *
-     * @return non-null
-     */
-    public ServiceDiscovery getServiceDiscovery() {
-        return serviceDiscovery;
-    }
 }