Add support for Zookeeper-based config center and metadata reporting in the demo (#15646)

Co-authored-by: Faye Lin <fayel@nvidia.com>

Author: lingyufei

dubbo-demo/dubbo-demo-api/dubbo-demo-api-consumer/pom.xml

@@ -46,6 +46,16 @@
       <artifactId>dubbo-registry-zookeeper</artifactId>
       <version>${project.version}</version>
     </dependency>
+    <dependency>
+      <groupId>org.apache.dubbo</groupId>
+      <artifactId>dubbo-configcenter-zookeeper</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.dubbo</groupId>
+      <artifactId>dubbo-metadata-report-zookeeper</artifactId>
+      <version>${project.version}</version>
+    </dependency>
     <dependency>
       <groupId>org.apache.dubbo</groupId>
       <artifactId>dubbo-rpc-dubbo</artifactId>

dubbo-demo/dubbo-demo-api/dubbo-demo-api-consumer/src/main/java/org/apache/dubbo/demo/consumer/Application.java

@@ -19,6 +19,8 @@
 import org.apache.dubbo.api.demo.DemoService;
 import org.apache.dubbo.common.constants.CommonConstants;
 import org.apache.dubbo.config.ApplicationConfig;
+import org.apache.dubbo.config.ConfigCenterConfig;
+import org.apache.dubbo.config.MetadataReportConfig;
 import org.apache.dubbo.config.ProtocolConfig;
 import org.apache.dubbo.config.ReferenceConfig;
 import org.apache.dubbo.config.RegistryConfig;
@@ -31,7 +33,7 @@
 public class Application {
     private static final Logger logger = LoggerFactory.getLogger(Application.class);
 
-    private static final String REGISTRY_URL = "zookeeper://127.0.0.1:2181";
+    private static final String ZOOKEEPER_URL = "zookeeper://127.0.0.1:2181";
 
     public static void main(String[] args) {
         runWithBootstrap();
@@ -42,10 +44,15 @@ private static void runWithBootstrap() {
         reference.setInterface(DemoService.class);
         reference.setGeneric("true");
 
+        ConfigCenterConfig configCenterConfig = new ConfigCenterConfig();
+        configCenterConfig.setAddress(ZOOKEEPER_URL);
+
         DubboBootstrap bootstrap = DubboBootstrap.getInstance();
         bootstrap
                 .application(new ApplicationConfig("dubbo-demo-api-consumer"))
-                .registry(new RegistryConfig(REGISTRY_URL))
+                .configCenter(configCenterConfig)
+                .registry(new RegistryConfig(ZOOKEEPER_URL))
+                .metadataReport(new MetadataReportConfig(ZOOKEEPER_URL))
                 .protocol(new ProtocolConfig(CommonConstants.TRIPLE, -1))
                 .reference(reference)
                 .start();

dubbo-demo/dubbo-demo-api/dubbo-demo-api-provider/pom.xml

@@ -58,6 +58,16 @@
       <artifactId>dubbo-registry-zookeeper</artifactId>
       <version>${project.version}</version>
     </dependency>
+    <dependency>
+      <groupId>org.apache.dubbo</groupId>
+      <artifactId>dubbo-configcenter-zookeeper</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.dubbo</groupId>
+      <artifactId>dubbo-metadata-report-zookeeper</artifactId>
+      <version>${project.version}</version>
+    </dependency>
     <dependency>
       <groupId>org.apache.dubbo</groupId>
       <artifactId>dubbo-serialization-hessian2</artifactId>

dubbo-demo/dubbo-demo-api/dubbo-demo-api-provider/src/main/java/org/apache/dubbo/demo/provider/Application.java

@@ -19,14 +19,16 @@
 import org.apache.dubbo.api.demo.DemoService;
 import org.apache.dubbo.common.constants.CommonConstants;
 import org.apache.dubbo.config.ApplicationConfig;
+import org.apache.dubbo.config.ConfigCenterConfig;
+import org.apache.dubbo.config.MetadataReportConfig;
 import org.apache.dubbo.config.ProtocolConfig;
 import org.apache.dubbo.config.RegistryConfig;
 import org.apache.dubbo.config.ServiceConfig;
 import org.apache.dubbo.config.bootstrap.DubboBootstrap;
 
 public class Application {
 
-    private static final String REGISTRY_URL = "zookeeper://127.0.0.1:2181";
+    private static final String ZOOKEEPER_URL = "zookeeper://127.0.0.1:2181";
 
     public static void main(String[] args) {
         startWithBootstrap();
@@ -37,10 +39,15 @@ private static void startWithBootstrap() {
         service.setInterface(DemoService.class);
         service.setRef(new DemoServiceImpl());
 
+        ConfigCenterConfig configCenterConfig = new ConfigCenterConfig();
+        configCenterConfig.setAddress(ZOOKEEPER_URL);
+
         DubboBootstrap bootstrap = DubboBootstrap.getInstance();
         bootstrap
                 .application(new ApplicationConfig("dubbo-demo-api-provider"))
-                .registry(new RegistryConfig(REGISTRY_URL))
+                .configCenter(configCenterConfig)
+                .registry(new RegistryConfig(ZOOKEEPER_URL))
+                .metadataReport(new MetadataReportConfig(ZOOKEEPER_URL))
                 .protocol(new ProtocolConfig(CommonConstants.DUBBO, -1))
                 .service(service)
                 .start()