diff --git a/CHANGELOG.md b/CHANGELOG.md
index 06c1f8175..2b031bec3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,4 @@
# Change Log
---
+- [Add metadata transfer example.](https://github.com/Tencent/spring-cloud-tencent/pull/211)
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/README-zh.md b/spring-cloud-tencent-examples/metadata-transfer-example/README-zh.md
new file mode 100644
index 000000000..9af9aff6d
--- /dev/null
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/README-zh.md
@@ -0,0 +1,118 @@
+# Spring Cloud Tencent Metadata Transfer example
+
+## 样例简介
+
+本样例将介绍如何在Spring Cloud项目中使用```spring-cloud-starter-tencent-metadata-transfer```以使用其各项功能。
+
+本样例包括```metadata-callee-service```、```metadata-caller-service```。
+
+## 使用说明
+
+### 修改配置
+
+配置如下所示。其中,${ip}和${port}为Polaris后端服务的IP地址与端口号。
+
+```yaml
+spring:
+ application:
+ name: ${application.name}
+ cloud:
+ polaris:
+ address: ${ip}:${port}
+```
+
+### Maven依赖
+
+```xml
+
+ com.tencent.cloud
+ spring-cloud-starter-tencent-metadata-transfer
+
+```
+
+### 启动样例
+
+#### 启动Polaris后端服务
+
+参考[Polaris Getting Started](https://github.com/PolarisMesh/polaris#getting-started)。
+
+#### 启动应用
+
+##### IDEA启动
+
+分别启动
+- ```spring-cloud-tencent-examples/metadata-transfer-example/metadata-callee-service```的```MetadataCalleeService```
+- ```spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service```的```MetadataCallerService```
+
+
+##### Maven打包启动
+
+在```spring-cloud-tencent-examples/metadata-transfer-example```下执行
+
+```sh
+mvn clean package
+```
+
+然后在```metadata-callee-service```、```metadata-caller-service```下找到生成的jar包,运行
+
+```
+java -jar ${app.jar}
+```
+
+启动应用,其中${app.jar}替换为对应的jar包名。
+
+### 元数据配置
+
+在```spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service```项目的```bootstrap.yml```配置文件中
+
+```yaml
+spring:
+ cloud:
+ tencent:
+ metadata:
+ # 定义元数据的键值对
+ content:
+ # 示例:本地元数据,默认不在链路中传递
+ CUSTOM-METADATA-KEY-LOCAL: CUSTOM-VALUE-LOCAL
+ # 示例:可传递元数据
+ CUSTOM-METADATA-KEY-TRANSITIVE: CUSTOM-VALUE-TRANSITIVE
+ # 指定哪个元数据的键值将沿着链接传递
+ transitive:
+ - CUSTOM-METADATA-KEY-TRANSITIVE
+
+```
+
+### 验证
+
+#### 请求调用
+
+```shell
+curl -L -X GET 'http://127.0.0.1:48080/metadata/service/caller/feign/info'
+```
+
+预期返回值
+
+```
+{
+ "caller-metadata-contents": {
+ "CUSTOM-METADATA-KEY-TRANSITIVE": "CUSTOM-VALUE-TRANSITIVE",
+ "CUSTOM-METADATA-KEY-LOCAL": "CUSTOM-VALUE-LOCAL"
+ },
+ "callee-transitive-metadata": {
+ "CUSTOM-METADATA-KEY-TRANSITIVE": "CUSTOM-VALUE-TRANSITIVE"
+ },
+ "caller-transitive-metadata": {
+ "CUSTOM-METADATA-KEY-TRANSITIVE": "CUSTOM-VALUE-TRANSITIVE"
+ }
+}
+```
+
+返回值解析
+
+- Key `caller-metadata-contents` 表示 `metadata-caller-service` 项目中默认配置的所有的元数据。
+- Key `caller-transitive-metadata` 表示 `metadata-caller-service` 项目中指定的可以在链路中传递的元数据列表。
+- Key `callee-transitive-metadata` 表示 `metadata-callee-service` 项目被 `metadata-caller-service` 调用时传递过来的上游的元数据列表。
+
+### Wiki参考
+
+查看 [Spring Cloud Tencent Metadata Transfer 使用指南](https://github.com/Tencent/spring-cloud-tencent/wiki/Spring-Cloud-Tencent-Metadata-Transfer-%E4%BD%BF%E7%94%A8%E6%8C%87%E5%8D%97) .
\ No newline at end of file
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/README.md b/spring-cloud-tencent-examples/metadata-transfer-example/README.md
new file mode 100644
index 000000000..b0d912ce9
--- /dev/null
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/README.md
@@ -0,0 +1,117 @@
+# Spring Cloud Tencent Metadata Transfer example
+
+## Example Introduction
+
+This example shows how to use ```spring-cloud-starter-tencent-metadata-transfer``` in Spring Cloud project for its features.
+
+This example contains ```metadata-callee-service```、```metadata-caller-service```.
+
+## Instruction
+
+### Configuration
+
+The configuration is as the following shows. ${ip} and ${port} are Polaris backend IP address and port number.
+
+```yaml
+spring:
+ application:
+ name: ${application.name}
+ cloud:
+ polaris:
+ address: ${ip}:${port}
+```
+
+### Maven Dependency
+
+```xml
+
+ com.tencent.cloud
+ spring-cloud-starter-tencent-metadata-transfer
+
+```
+
+### Launching Example
+
+#### Launching Polaris Backend Service
+
+Reference to [Polaris Getting Started](https://github.com/PolarisMesh/polaris#getting-started)
+
+#### Launching Application
+
+- IDEA Launching
+
+- ```spring-cloud-tencent-examples/metadata-transfer-example/metadata-callee-service```‘s```MetadataCalleeService```
+- ```spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service```'s```MetadataCallerService```
+
+- Maven Package Launching
+
+Execute under ```spring-cloud-tencent-examples/metadata-transfer-example```
+
+```sh
+mvn clean package
+```
+
+Then find the jars under ```metadata-callee-service```、```metadata-caller-service```, and run it:
+
+```
+java -jar ${app.jar}
+```
+
+Launch application, change ${app.jar} to jar's package name.
+
+
+### Metadata Configuration
+
+In the ```bootstrap.yml``` configuration file of the ```spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service``` project
+
+```yaml
+spring:
+ cloud:
+ tencent:
+ metadata:
+ # Defined your metadata keys & values
+ content:
+ # Example: intransitive
+ CUSTOM-METADATA-KEY-LOCAL: CUSTOM-VALUE-LOCAL
+ # Example: transitive
+ CUSTOM-METADATA-KEY-TRANSITIVE: CUSTOM-VALUE-TRANSITIVE
+ # Assigned which metadata key-value will be passed along the link
+ transitive:
+ - CUSTOM-METADATA-KEY-TRANSITIVE
+
+```
+
+### Verify
+
+#### Request Invoke
+
+```shell
+curl -L -X GET 'http://127.0.0.1:48080/metadata/service/caller/feign/info'
+```
+
+Expected return rate
+
+```
+{
+ "caller-metadata-contents": {
+ "CUSTOM-METADATA-KEY-TRANSITIVE": "CUSTOM-VALUE-TRANSITIVE",
+ "CUSTOM-METADATA-KEY-LOCAL": "CUSTOM-VALUE-LOCAL"
+ },
+ "callee-transitive-metadata": {
+ "CUSTOM-METADATA-KEY-TRANSITIVE": "CUSTOM-VALUE-TRANSITIVE"
+ },
+ "caller-transitive-metadata": {
+ "CUSTOM-METADATA-KEY-TRANSITIVE": "CUSTOM-VALUE-TRANSITIVE"
+ }
+}
+```
+
+Response value description
+
+- Key `caller-metadata-contents` represents all metadata configured by default in the `metadata-caller-service` project.
+- Key `caller-transitive-metadata` represents the list of metadata that can be passed in the link specified in the `metadata-caller-service` item.
+- Key `callee-transitive-metadata` represents the list of upstream metadata passed when the `metadata-callee-service` project is called by `metadata-caller-service`.
+
+### Wiki Reference
+
+See [Spring Cloud Tencent Metadata Transfer Usage Document](https://github.com/Tencent/spring-cloud-tencent/wiki/Spring-Cloud-Tencent-Metadata-Transfer-Usage-Document) for more reference .
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-callee-service/pom.xml b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-callee-service/pom.xml
new file mode 100644
index 000000000..237c9877f
--- /dev/null
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-callee-service/pom.xml
@@ -0,0 +1,51 @@
+
+
+
+ metadata-transfer-example
+ com.tencent.cloud
+ ${revision}
+ ../pom.xml
+
+ 4.0.0
+
+ metadata-callee-service
+ Spring Cloud Tencent Metadata Transfer Callee Service
+
+
+
+ com.tencent.cloud
+ spring-cloud-starter-tencent-polaris-discovery
+
+
+
+
+
+
+ org.springframework.boot
+ spring-boot-maven-plugin
+
+
+
+ repackage
+
+
+
+
+
+ org.apache.maven.plugins
+ maven-source-plugin
+ 3.2.0
+
+
+ attach-sources
+
+ jar
+
+
+
+
+
+
+
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-callee-service/src/main/java/com/tencent/cloud/metadata/service/callee/MetadataCalleeController.java b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-callee-service/src/main/java/com/tencent/cloud/metadata/service/callee/MetadataCalleeController.java
new file mode 100644
index 000000000..1e515fdf6
--- /dev/null
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-callee-service/src/main/java/com/tencent/cloud/metadata/service/callee/MetadataCalleeController.java
@@ -0,0 +1,65 @@
+/*
+ * Tencent is pleased to support the open source community by making Spring Cloud Tencent available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
+ *
+ * Licensed under the BSD 3-Clause License (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://opensource.org/licenses/BSD-3-Clause
+ *
+ * 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 com.tencent.cloud.metadata.service.callee;
+
+import java.util.Map;
+
+import com.tencent.cloud.common.metadata.MetadataContext;
+import com.tencent.cloud.common.metadata.MetadataContextHolder;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * Metadata callee controller.
+ *
+ * @author Palmer Xu
+ */
+@RestController
+@RequestMapping("/metadata/service/callee")
+public class MetadataCalleeController {
+
+ private static final Logger LOG = LoggerFactory.getLogger(MetadataCalleeController.class);
+
+ @Value("${server.port:0}")
+ private int port;
+
+ /**
+ * Get information of callee.
+ * @return information of callee
+ */
+ @GetMapping("/info")
+ public Map info() {
+ LOG.info("Metadata Service Callee [{}] is called.", port);
+
+ // Get Custom Metadata From Context
+ MetadataContext context = MetadataContextHolder.get();
+ Map customMetadataMap = context.getAllTransitiveCustomMetadata();
+
+ customMetadataMap.forEach((key, value) -> {
+ LOG.info("Custom Metadata (Key-Value): {} : {}", key, value);
+ });
+
+ return customMetadataMap;
+ }
+
+}
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-callee-service/src/main/java/com/tencent/cloud/metadata/service/callee/MetadataCalleeService.java b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-callee-service/src/main/java/com/tencent/cloud/metadata/service/callee/MetadataCalleeService.java
new file mode 100644
index 000000000..06771a5e8
--- /dev/null
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-callee-service/src/main/java/com/tencent/cloud/metadata/service/callee/MetadataCalleeService.java
@@ -0,0 +1,35 @@
+/*
+ * Tencent is pleased to support the open source community by making Spring Cloud Tencent available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
+ *
+ * Licensed under the BSD 3-Clause License (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://opensource.org/licenses/BSD-3-Clause
+ *
+ * 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 com.tencent.cloud.metadata.service.callee;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * Metadata callee application.
+ *
+ * @author Palmer Xu
+ */
+@SpringBootApplication
+public class MetadataCalleeService {
+
+ public static void main(String[] args) {
+ SpringApplication.run(MetadataCalleeService.class, args);
+ }
+
+}
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-callee-service/src/main/resources/bootstrap.yml b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-callee-service/src/main/resources/bootstrap.yml
new file mode 100644
index 000000000..c1ded3f47
--- /dev/null
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-callee-service/src/main/resources/bootstrap.yml
@@ -0,0 +1,13 @@
+server:
+ port: 48084
+spring:
+ application:
+ name: MetadataCalleeService
+ cloud:
+ polaris:
+ address: grpc://127.0.0.1:8091
+ namespace: default
+ enabled: true
+ discovery:
+ enabled: true
+ register: true
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service/pom.xml b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service/pom.xml
new file mode 100644
index 000000000..1c1306805
--- /dev/null
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service/pom.xml
@@ -0,0 +1,51 @@
+
+
+
+ metadata-transfer-example
+ com.tencent.cloud
+ ${revision}
+ ../pom.xml
+
+ 4.0.0
+
+ metadata-caller-service
+ Spring Cloud Tencent Metadata Transfer Caller Service
+
+
+
+ com.tencent.cloud
+ spring-cloud-starter-tencent-polaris-discovery
+
+
+
+
+
+
+ org.springframework.boot
+ spring-boot-maven-plugin
+
+
+
+ repackage
+
+
+
+
+
+ org.apache.maven.plugins
+ maven-source-plugin
+ 3.2.0
+
+
+ attach-sources
+
+ jar
+
+
+
+
+
+
+
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service/src/main/java/com/tencent/cloud/metadata/service/caller/MetadataCalleeService.java b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service/src/main/java/com/tencent/cloud/metadata/service/caller/MetadataCalleeService.java
new file mode 100644
index 000000000..65bea6707
--- /dev/null
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service/src/main/java/com/tencent/cloud/metadata/service/caller/MetadataCalleeService.java
@@ -0,0 +1,41 @@
+/*
+ * Tencent is pleased to support the open source community by making Spring Cloud Tencent available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
+ *
+ * Licensed under the BSD 3-Clause License (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://opensource.org/licenses/BSD-3-Clause
+ *
+ * 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 com.tencent.cloud.metadata.service.caller;
+
+import java.util.Map;
+
+import org.springframework.cloud.openfeign.FeignClient;
+import org.springframework.web.bind.annotation.GetMapping;
+
+/**
+ * Metadata callee feign client.
+ *
+ * @author Palmer Xu
+ */
+@FeignClient(value = "MetadataCalleeService",
+ fallback = MetadataCalleeServiceFallback.class)
+public interface MetadataCalleeService {
+
+ /**
+ * Get information of callee.
+ * @return information of callee
+ */
+ @GetMapping("/metadata/service/callee/info")
+ Map info();
+
+}
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service/src/main/java/com/tencent/cloud/metadata/service/caller/MetadataCalleeServiceFallback.java b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service/src/main/java/com/tencent/cloud/metadata/service/caller/MetadataCalleeServiceFallback.java
new file mode 100644
index 000000000..ba508831a
--- /dev/null
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service/src/main/java/com/tencent/cloud/metadata/service/caller/MetadataCalleeServiceFallback.java
@@ -0,0 +1,39 @@
+/*
+ * Tencent is pleased to support the open source community by making Spring Cloud Tencent available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
+ *
+ * Licensed under the BSD 3-Clause License (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://opensource.org/licenses/BSD-3-Clause
+ *
+ * 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 com.tencent.cloud.metadata.service.caller;
+
+import java.util.Map;
+
+import com.google.common.collect.Maps;
+
+import org.springframework.stereotype.Component;
+
+/**
+ * Metadata callee feign client fallback.
+ *
+ * @author Palmer Xu
+ */
+@Component
+public class MetadataCalleeServiceFallback implements MetadataCalleeService {
+
+ @Override
+ public Map info() {
+ return Maps.newHashMap();
+ }
+
+}
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service/src/main/java/com/tencent/cloud/metadata/service/caller/MetadataCallerController.java b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service/src/main/java/com/tencent/cloud/metadata/service/caller/MetadataCallerController.java
new file mode 100644
index 000000000..116504190
--- /dev/null
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service/src/main/java/com/tencent/cloud/metadata/service/caller/MetadataCallerController.java
@@ -0,0 +1,109 @@
+/*
+ * Tencent is pleased to support the open source community by making Spring Cloud Tencent available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
+ *
+ * Licensed under the BSD 3-Clause License (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://opensource.org/licenses/BSD-3-Clause
+ *
+ * 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 com.tencent.cloud.metadata.service.caller;
+
+import java.util.Map;
+
+import com.google.common.collect.Maps;
+import com.tencent.cloud.common.metadata.MetadataContext;
+import com.tencent.cloud.common.metadata.MetadataContextHolder;
+import com.tencent.cloud.common.metadata.config.MetadataLocalProperties;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.client.RestTemplate;
+
+/**
+ * Metadata caller controller.
+ *
+ * @author Palmer Xu
+ */
+@RestController
+@RequestMapping("/metadata/service/caller")
+public class MetadataCallerController {
+
+ private final RestTemplate restTemplate;
+
+ private final MetadataCalleeService metadataCalleeService;
+
+ private final MetadataLocalProperties metadataLocalProperties;
+
+ public MetadataCallerController(RestTemplate restTemplate,
+ MetadataCalleeService metadataCalleeService,
+ MetadataLocalProperties metadataLocalProperties) {
+ this.restTemplate = restTemplate;
+ this.metadataCalleeService = metadataCalleeService;
+ this.metadataLocalProperties = metadataLocalProperties;
+ }
+
+ /**
+ * Get metadata info from remote service.
+ * @return metadata map
+ */
+ @GetMapping("/feign/info")
+ public Map> feign() {
+ Map> ret = Maps.newHashMap();
+
+ // Call remote service with feign client
+ Map calleeMetadata = metadataCalleeService.info();
+ ret.put("callee-transitive-metadata", calleeMetadata);
+
+ // Get Custom Metadata From Context
+ MetadataContext context = MetadataContextHolder.get();
+ Map callerTransitiveMetadata = context.getAllTransitiveCustomMetadata();
+ ret.put("caller-transitive-metadata", callerTransitiveMetadata);
+ ret.put("caller-metadata-contents", metadataLocalProperties.getContent());
+
+ return ret;
+ }
+
+ /**
+ * Get metadata information of callee.
+ * @return information of callee
+ */
+ @SuppressWarnings("unchecked")
+ @GetMapping("/rest/info")
+ public Map> rest() {
+ Map> ret = Maps.newHashMap();
+
+ // Call remote service with RestTemplate
+ Map calleeMetadata = restTemplate.getForObject(
+ "http://MetadataCalleeService/metadata/service/callee/info",
+ Map.class);
+ ret.put("callee-transitive-metadata", calleeMetadata);
+
+ // Get Custom Metadata From Context
+ MetadataContext context = MetadataContextHolder.get();
+ Map callerTransitiveMetadata = context.getAllTransitiveCustomMetadata();
+ ret.put("caller-transitive-metadata", callerTransitiveMetadata);
+ ret.put("caller-metadata-contents", metadataLocalProperties.getContent());
+
+ return ret;
+ }
+
+ /**
+ * health check.
+ * @return health check info
+ */
+ @GetMapping("/healthCheck")
+ public String healthCheck() {
+ return "pk ok";
+ }
+
+}
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service/src/main/java/com/tencent/cloud/metadata/service/caller/MetadataCallerService.java b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service/src/main/java/com/tencent/cloud/metadata/service/caller/MetadataCallerService.java
new file mode 100644
index 000000000..a586c7e72
--- /dev/null
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service/src/main/java/com/tencent/cloud/metadata/service/caller/MetadataCallerService.java
@@ -0,0 +1,48 @@
+/*
+ * Tencent is pleased to support the open source community by making Spring Cloud Tencent available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
+ *
+ * Licensed under the BSD 3-Clause License (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://opensource.org/licenses/BSD-3-Clause
+ *
+ * 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 com.tencent.cloud.metadata.service.caller;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
+import org.springframework.cloud.client.loadbalancer.LoadBalanced;
+import org.springframework.cloud.openfeign.EnableFeignClients;
+import org.springframework.context.annotation.Bean;
+import org.springframework.web.client.RestTemplate;
+
+/**
+ * Metadata caller application.
+ *
+ * @author Palmer Xu
+ */
+@SpringBootApplication
+@EnableDiscoveryClient
+@EnableFeignClients
+public class MetadataCallerService {
+
+ public static void main(String[] args) {
+ SpringApplication.run(MetadataCallerService.class, args);
+ }
+
+ @Bean
+ @LoadBalanced
+ public RestTemplate restTemplate() {
+ return new RestTemplate();
+ }
+
+}
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service/src/main/resources/bootstrap.yml b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service/src/main/resources/bootstrap.yml
new file mode 100644
index 000000000..90781f1e9
--- /dev/null
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service/src/main/resources/bootstrap.yml
@@ -0,0 +1,26 @@
+server:
+ port: 48080
+spring:
+ application:
+ name: MetadataCallerService
+ cloud:
+ polaris:
+ address: grpc://127.0.0.1:8091
+ namespace: default
+ enabled: true
+ discovery:
+ enabled: true
+ register: true
+ heartbeat-enabled: true
+ health-check-url: /metadata/service/caller/healthCheck
+ tencent:
+ metadata:
+ # Defined your metadata keys & values
+ content:
+ # Example: intransitive
+ CUSTOM-METADATA-KEY-LOCAL: CUSTOM-VALUE-LOCAL
+ # Example: transitive
+ CUSTOM-METADATA-KEY-TRANSITIVE: CUSTOM-VALUE-TRANSITIVE
+ # Assigned which metadata key-value will be passed along the link
+ transitive:
+ - CUSTOM-METADATA-KEY-TRANSITIVE
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/pom.xml b/spring-cloud-tencent-examples/metadata-transfer-example/pom.xml
new file mode 100644
index 000000000..bd2b961ec
--- /dev/null
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/pom.xml
@@ -0,0 +1,43 @@
+
+
+
+ spring-cloud-tencent-examples
+ com.tencent.cloud
+ ${revision}
+ ../pom.xml
+
+ 4.0.0
+
+ metadata-transfer-example
+ pom
+ Spring Cloud Starter Tencent Metadata Transfer Example
+
+
+ metadata-callee-service
+ metadata-caller-service
+
+
+
+
+ org.springframework.boot
+ spring-boot-starter-web
+
+
+
+ org.springframework.boot
+ spring-boot-starter-actuator
+
+
+
+ org.springframework.cloud
+ spring-cloud-starter-openfeign
+
+
+
+ com.tencent.cloud
+ spring-cloud-starter-tencent-metadata-transfer
+
+
+
diff --git a/spring-cloud-tencent-examples/pom.xml b/spring-cloud-tencent-examples/pom.xml
index 2e86e4d8d..2897d6211 100644
--- a/spring-cloud-tencent-examples/pom.xml
+++ b/spring-cloud-tencent-examples/pom.xml
@@ -22,6 +22,7 @@
polaris-gateway-example
polaris-config-example
polaris-router-example
+ metadata-transfer-example