feat: add dubbo-samples-spring-boot-idl-diff-package module

1-basic/dubbo-samples-spring-boot-idl-diff-package/README.md

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+# Dubbo Spring Boot Example using Triple and Protobuf with different package and java_package
+
+This example uses triple as the underlying RPC protocol and IDL to define services. It's highly recommend to use triple and IDL for cross-language communication scenarios. Please refer to [dubbo-samples-spring-boot](../dubbo-samples-spring-boot) for how to use pure Java interface to define services for triple protocol.
+
+This example define the Java package name separately from the service prefix, which is useful in some cross-language calling scenarios.And  For instance, in the following IDL definition:
+
+1. The complete service name is `idl.Greeter`, which will be used during rpc calls and service discovery.
+2. The Java package name is defined as `org.apache.dubbo.springboot.demo.idl.Greeter`, where the generated Java code will be placed.
+
+# How to run
+
+## Start Nacos
+This example replies on Nacos as service discovery registry center, so you need to run the Nacos server first, there are two ways to do so:
+1. [Download Nacos binary and start it directly](https://dubbo-next.staged.apache.org/zh-cn/overview/reference/integrations/nacos/#本地下载)
+2. [Start Nacos using docker](https://dubbo-next.staged.apache.org/zh-cn/overview/reference/integrations/nacos/#docker)
+
+## Compile
+
+Step into 'dubbo-samples-spring-boot-idl-diff-package' directory, run the following command:
+
+```shell
+$ mvn clean compile
+```
+
+## Start provider
+
+Enter provider directory:
+```shell
+$ cd dubbo-samples-spring-boot-idl-diff-package-provider
+```
+
+then, run the following command to start provider:
+```shell
+$ mvn compile exec:java -Dexec.mainClass="org.apache.dubbo.springboot.demo.provider.ProviderApplication"
+```
+
+Run the following command to see server works as expected:
+```shell
+curl \
+    --header "Content-Type: application/json" \
+    --data '{"name":"Dubbo"}' \
+    http://localhost:50052/idl.Greeter/greet/
+```
+
+## Start consumer
+
+Enter provider directory:
+```shell
+$ cd dubbo-samples-spring-boot-idl-diff-package-consumer
+```
+
+then, run the following command to start consumer:
+```shell
+$ mvn compile exec:java -Dexec.mainClass="org.apache.dubbo.springboot.demo.consumer.ConsumerApplication"
+```
+
+
+

1-basic/dubbo-samples-spring-boot-idl-diff-package/dubbo-samples-spring-boot-idl-diff-package-consumer/build/generated/source/proto/main/java/org/apache/dubbo/springboot/demo/idl/DubboGreeterTriple.java

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+/*
+* Licensed to the Apache Software Foundation (ASF) under one or more
+* contributor license agreements.  See the NOTICE file distributed with
+* this work for additional information regarding copyright ownership.
+* The ASF licenses this file to You under the Apache License, Version 2.0
+* (the "License"); you may not use this file except in compliance with
+* the License.  You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+package org.apache.dubbo.springboot.demo.idl;
+
+import org.apache.dubbo.common.stream.StreamObserver;
+import org.apache.dubbo.common.URL;
+import org.apache.dubbo.rpc.Invoker;
+import org.apache.dubbo.rpc.PathResolver;
+import org.apache.dubbo.rpc.RpcException;
+import org.apache.dubbo.rpc.ServerService;
+import org.apache.dubbo.rpc.TriRpcStatus;
+import org.apache.dubbo.rpc.model.MethodDescriptor;
+import org.apache.dubbo.rpc.model.ServiceDescriptor;
+import org.apache.dubbo.rpc.model.StubMethodDescriptor;
+import org.apache.dubbo.rpc.model.StubServiceDescriptor;
+import org.apache.dubbo.rpc.service.Destroyable;
+import org.apache.dubbo.rpc.stub.BiStreamMethodHandler;
+import org.apache.dubbo.rpc.stub.ServerStreamMethodHandler;
+import org.apache.dubbo.rpc.stub.StubInvocationUtil;
+import org.apache.dubbo.rpc.stub.StubInvoker;
+import org.apache.dubbo.rpc.stub.StubMethodHandler;
+import org.apache.dubbo.rpc.stub.StubSuppliers;
+import org.apache.dubbo.rpc.stub.UnaryStubMethodHandler;
+
+import com.google.protobuf.Message;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.function.BiConsumer;
+import java.util.concurrent.CompletableFuture;
+
+public final class DubboGreeterTriple {
+
+    public static final String SERVICE_NAME = Greeter.SERVICE_NAME;
+
+    private static final StubServiceDescriptor serviceDescriptor = new StubServiceDescriptor(SERVICE_NAME,Greeter.class);
+
+    static {
+        org.apache.dubbo.rpc.protocol.tri.service.SchemaDescriptorRegistry.addSchemaDescriptor(SERVICE_NAME,GreeterOuterClass.getDescriptor());
+        StubSuppliers.addSupplier(SERVICE_NAME, DubboGreeterTriple::newStub);
+        StubSuppliers.addSupplier(Greeter.JAVA_SERVICE_NAME,  DubboGreeterTriple::newStub);
+        StubSuppliers.addDescriptor(SERVICE_NAME, serviceDescriptor);
+        StubSuppliers.addDescriptor(Greeter.JAVA_SERVICE_NAME, serviceDescriptor);
+    }
+
+    @SuppressWarnings("all")
+    public static Greeter newStub(Invoker<?> invoker) {
+        return new GreeterStub((Invoker<Greeter>)invoker);
+    }
+
+    private static final StubMethodDescriptor greetMethod = new StubMethodDescriptor("greet",
+    org.apache.dubbo.springboot.demo.idl.GreeterRequest.class, org.apache.dubbo.springboot.demo.idl.GreeterReply.class, MethodDescriptor.RpcType.UNARY,
+    obj -> ((Message) obj).toByteArray(), obj -> ((Message) obj).toByteArray(), org.apache.dubbo.springboot.demo.idl.GreeterRequest::parseFrom,
+    org.apache.dubbo.springboot.demo.idl.GreeterReply::parseFrom);
+
+    private static final StubMethodDescriptor greetAsyncMethod = new StubMethodDescriptor("greet",
+    org.apache.dubbo.springboot.demo.idl.GreeterRequest.class, java.util.concurrent.CompletableFuture.class, MethodDescriptor.RpcType.UNARY,
+    obj -> ((Message) obj).toByteArray(), obj -> ((Message) obj).toByteArray(), org.apache.dubbo.springboot.demo.idl.GreeterRequest::parseFrom,
+    org.apache.dubbo.springboot.demo.idl.GreeterReply::parseFrom);
+
+    private static final StubMethodDescriptor greetProxyAsyncMethod = new StubMethodDescriptor("greetAsync",
+    org.apache.dubbo.springboot.demo.idl.GreeterRequest.class, org.apache.dubbo.springboot.demo.idl.GreeterReply.class, MethodDescriptor.RpcType.UNARY,
+    obj -> ((Message) obj).toByteArray(), obj -> ((Message) obj).toByteArray(), org.apache.dubbo.springboot.demo.idl.GreeterRequest::parseFrom,
+    org.apache.dubbo.springboot.demo.idl.GreeterReply::parseFrom);
+
+
+
+
+    static{
+        serviceDescriptor.addMethod(greetMethod);
+        serviceDescriptor.addMethod(greetProxyAsyncMethod);
+    }
+
+    public static class GreeterStub implements Greeter, Destroyable {
+        private final Invoker<Greeter> invoker;
+
+        public GreeterStub(Invoker<Greeter> invoker) {
+            this.invoker = invoker;
+        }
+
+        @Override
+        public void $destroy() {
+              invoker.destroy();
+         }
+
+        @Override
+        public org.apache.dubbo.springboot.demo.idl.GreeterReply greet(org.apache.dubbo.springboot.demo.idl.GreeterRequest request){
+            return StubInvocationUtil.unaryCall(invoker, greetMethod, request);
+        }
+
+        public CompletableFuture<org.apache.dubbo.springboot.demo.idl.GreeterReply> greetAsync(org.apache.dubbo.springboot.demo.idl.GreeterRequest request){
+            return StubInvocationUtil.unaryCall(invoker, greetAsyncMethod, request);
+        }
+
+        public void greet(org.apache.dubbo.springboot.demo.idl.GreeterRequest request, StreamObserver<org.apache.dubbo.springboot.demo.idl.GreeterReply> responseObserver){
+            StubInvocationUtil.unaryCall(invoker, greetMethod , request, responseObserver);
+        }
+
+
+
+    }
+
+    public static abstract class GreeterImplBase implements Greeter, ServerService<Greeter> {
+
+        private <T, R> BiConsumer<T, StreamObserver<R>> syncToAsync(java.util.function.Function<T, R> syncFun) {
+            return new BiConsumer<T, StreamObserver<R>>() {
+                @Override
+                public void accept(T t, StreamObserver<R> observer) {
+                    try {
+                        R ret = syncFun.apply(t);
+                        observer.onNext(ret);
+                        observer.onCompleted();
+                    } catch (Throwable e) {
+                        observer.onError(e);
+                    }
+                }
+            };
+        }
+
+        @Override
+        public CompletableFuture<org.apache.dubbo.springboot.demo.idl.GreeterReply> greetAsync(org.apache.dubbo.springboot.demo.idl.GreeterRequest request){
+                return CompletableFuture.completedFuture(greet(request));
+        }
+
+        /**
+        * This server stream type unary method is <b>only</b> used for generated stub to support async unary method.
+        * It will not be called if you are NOT using Dubbo3 generated triple stub and <b>DO NOT</b> implement this method.
+        */
+        public void greet(org.apache.dubbo.springboot.demo.idl.GreeterRequest request, StreamObserver<org.apache.dubbo.springboot.demo.idl.GreeterReply> responseObserver){
+            greetAsync(request).whenComplete((r, t) -> {
+                if (t != null) {
+                    responseObserver.onError(t);
+                } else {
+                    responseObserver.onNext(r);
+                    responseObserver.onCompleted();
+                }
+            });
+        }
+
+        @Override
+        public final Invoker<Greeter> getInvoker(URL url) {
+            PathResolver pathResolver = url.getOrDefaultFrameworkModel()
+            .getExtensionLoader(PathResolver.class)
+            .getDefaultExtension();
+            Map<String,StubMethodHandler<?, ?>> handlers = new HashMap<>();
+
+            pathResolver.addNativeStub( "/" + SERVICE_NAME + "/greet");
+            pathResolver.addNativeStub( "/" + SERVICE_NAME + "/greetAsync");
+            // for compatibility
+            pathResolver.addNativeStub( "/" + JAVA_SERVICE_NAME + "/greet");
+            pathResolver.addNativeStub( "/" + JAVA_SERVICE_NAME + "/greetAsync");
+
+
+            BiConsumer<org.apache.dubbo.springboot.demo.idl.GreeterRequest, StreamObserver<org.apache.dubbo.springboot.demo.idl.GreeterReply>> greetFunc = this::greet;
+            handlers.put(greetMethod.getMethodName(), new UnaryStubMethodHandler<>(greetFunc));
+            BiConsumer<org.apache.dubbo.springboot.demo.idl.GreeterRequest, StreamObserver<org.apache.dubbo.springboot.demo.idl.GreeterReply>> greetAsyncFunc = syncToAsync(this::greet);
+            handlers.put(greetProxyAsyncMethod.getMethodName(), new UnaryStubMethodHandler<>(greetAsyncFunc));
+
+
+
+
+            return new StubInvoker<>(this, url, Greeter.class, handlers);
+        }
+
+
+        @Override
+        public org.apache.dubbo.springboot.demo.idl.GreeterReply greet(org.apache.dubbo.springboot.demo.idl.GreeterRequest request){
+            throw unimplementedMethodException(greetMethod);
+        }
+
+
+
+
+
+        @Override
+        public final ServiceDescriptor getServiceDescriptor() {
+            return serviceDescriptor;
+        }
+        private RpcException unimplementedMethodException(StubMethodDescriptor methodDescriptor) {
+            return TriRpcStatus.UNIMPLEMENTED.withDescription(String.format("Method %s is unimplemented",
+                "/" + serviceDescriptor.getInterfaceName() + "/" + methodDescriptor.getMethodName())).asException();
+        }
+    }
+
+}

1-basic/dubbo-samples-spring-boot-idl-diff-package/dubbo-samples-spring-boot-idl-diff-package-consumer/build/generated/source/proto/main/java/org/apache/dubbo/springboot/demo/idl/Greeter.java

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+/*
+* Licensed to the Apache Software Foundation (ASF) under one or more
+* contributor license agreements.  See the NOTICE file distributed with
+* this work for additional information regarding copyright ownership.
+* The ASF licenses this file to You under the Apache License, Version 2.0
+* (the "License"); you may not use this file except in compliance with
+* the License.  You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+package org.apache.dubbo.springboot.demo.idl;
+
+import org.apache.dubbo.common.stream.StreamObserver;
+import com.google.protobuf.Message;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.function.BiConsumer;
+import java.util.concurrent.CompletableFuture;
+
+public interface Greeter extends org.apache.dubbo.rpc.model.DubboStub {
+
+    String JAVA_SERVICE_NAME = "org.apache.dubbo.springboot.demo.idl.Greeter";
+    String SERVICE_NAME = "idl.Greeter";
+    org.apache.dubbo.springboot.demo.idl.GreeterReply greet(org.apache.dubbo.springboot.demo.idl.GreeterRequest request);
+
+    CompletableFuture<org.apache.dubbo.springboot.demo.idl.GreeterReply> greetAsync(org.apache.dubbo.springboot.demo.idl.GreeterRequest request);
+
+
+
+
+
+
+
+
+}