add spring boot interceptor to copy header(dubbo-tag)/cookie(dubbo.tag)

dubbo-common/src/main/java/org/apache/dubbo/common/constants/CommonConstants.java

@@ -639,4 +639,6 @@ public interface CommonConstants {
 
     String DUBBO_PACKABLE_METHOD_FACTORY = "dubbo.application.parameters." + PACKABLE_METHOD_FACTORY_KEY;
 
+    String DUBBO_TAG_HEADER = "dubbo-tag";
+
 }

dubbo-spring-boot/dubbo-spring-boot-interceptor/README.md

@@ -0,0 +1,30 @@
+# Dubbo Spring Boot interceptor
+
+`dubbo-spring-boot-interceptor` copy the header(dubbo-tag)/cookie(dubbo.tag) to dubbo . 
+
+
+
+
+## Integrate with spring boot
+
+### copy the header(dubbo-tag) to dubbo 
+```
+@Configuration
+public class WebMvcConfig implements WebMvcConfigurer {
+    @Override
+    public void addInterceptors(InterceptorRegistry registry) {
+        registry.addInterceptor(new DubboTagHeaderInterceptor()).addPathPatterns("/*").excludePathPatterns("/admin");
+    }
+}
+```
+### copy the cookie(dubbo.tag) to dubbo 
+```
+@Configuration
+public class WebMvcConfig implements WebMvcConfigurer {
+    @Override
+    public void addInterceptors(InterceptorRegistry registry) {
+        registry.addInterceptor(new DubboTagCookieInterceptor()).addPathPatterns("/*").excludePathPatterns("/admin");
+    }
+}
+```
+

dubbo-spring-boot/dubbo-spring-boot-interceptor/pom.xml

@@ -0,0 +1,53 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  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.
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <groupId>org.apache.dubbo</groupId>
+        <artifactId>dubbo-spring-boot</artifactId>
+        <version>${revision}</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+    <packaging>jar</packaging>
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>dubbo-spring-boot-interceptor</artifactId>
+    <description>Apache Dubbo Spring Boot Interceptor</description>
+
+    <dependencies>
+        <!-- Dubbo -->
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-common</artifactId>
+            <version>${project.version}</version>
+            <optional>true</optional>
+        </dependency>
+        <!--  spring -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+            <optional>true</optional>
+        </dependency>
+    </dependencies>
+
+
+</project>

dubbo-spring-boot/dubbo-spring-boot-interceptor/src/main/java/org/apache/dubbo/spring/boot/interceptor/DubboTagCookieInterceptor.java

@@ -0,0 +1,48 @@
+/*
+ * 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.spring.boot.interceptor;
+
+import org.apache.dubbo.common.constants.CommonConstants;
+import org.apache.dubbo.rpc.RpcContext;
+import org.springframework.web.servlet.HandlerInterceptor;
+
+import javax.servlet.http.Cookie;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+public class DubboTagCookieInterceptor implements HandlerInterceptor {
+
+    @Override
+    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
+        String tag = getSingleCookieValue(request.getCookies(), CommonConstants.TAG_KEY);
+        RpcContext.getClientAttachment().setAttachment(CommonConstants.TAG_KEY,tag);
+        return true;
+    }
+
+    private static String getSingleCookieValue(Cookie[] cookies, String name){
+        if (cookies == null || cookies.length == 0) {
+            return null;
+        }
+        for (Cookie cookie: cookies) {
+            if (name.equals(cookie.getName())) {
+                return cookie.getValue();
+            }
+        }
+        return null;
+    }
+
+}

dubbo-spring-boot/dubbo-spring-boot-interceptor/src/main/java/org/apache/dubbo/spring/boot/interceptor/DubboTagHeaderInterceptor.java

@@ -0,0 +1,33 @@
+/*
+ * 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.spring.boot.interceptor;
+
+import org.apache.dubbo.common.constants.CommonConstants;
+import org.apache.dubbo.rpc.RpcContext;
+import org.springframework.web.servlet.HandlerInterceptor;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+public class DubboTagHeaderInterceptor implements HandlerInterceptor {
+
+    @Override
+    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
+        RpcContext.getClientAttachment().setAttachment(CommonConstants.TAG_KEY, request.getHeader(CommonConstants.DUBBO_TAG_HEADER));
+        return true;
+    }
+}

dubbo-spring-boot/pom.xml

@@ -37,6 +37,7 @@
         <module>dubbo-spring-boot-compatible</module>
         <module>dubbo-spring-boot-starter</module>
         <module>dubbo-spring-boot-starters</module>
+        <module>dubbo-spring-boot-interceptor</module>
     </modules>
 
     <properties>