增加 spring cloud sleuth 链路追踪

labx-13/labx-13-sc-sleuth-opentracing/src/main/resources/application.yml

@@ -11,3 +11,6 @@ spring:
     # Spring Cloud Sleuth 针对 Web 组件的配置项，例如说 SpringMVC
     web:
       enabled: true # 是否开启，默认为 true
+    # Spring Cloud Sleuth 针对 OpenTracing 组件的配置项
+    opentracing:
+      enabled: true # 是否开启，默认为 true

labx-13/labx-13-sc-sleuth-sampler/pom.xml

@@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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>
+        <artifactId>labx-13</artifactId>
+        <groupId>cn.iocoder.springboot.labs</groupId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>labx-13-sc-sleuth-sampler</artifactId>
+
+    <properties>
+        <maven.compiler.target>1.8</maven.compiler.target>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <spring.boot.version>2.2.4.RELEASE</spring.boot.version>
+        <spring.cloud.version>Hoxton.SR1</spring.cloud.version>
+    </properties>
+
+    <!--
+        引入 Spring Boot、Spring Cloud、Spring Cloud Alibaba 三者 BOM 文件，进行依赖版本的管理，防止不兼容。
+        在 https://dwz.cn/mcLIfNKt 文章中，Spring Cloud Alibaba 开发团队推荐了三者的依赖关系
+     -->
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-starter-parent</artifactId>
+                <version>${spring.boot.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+            <dependency>
+                <groupId>org.springframework.cloud</groupId>
+                <artifactId>spring-cloud-dependencies</artifactId>
+                <version>${spring.cloud.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <dependencies>
+        <!-- 引入 SpringMVC 相关依赖，并实现对其的自动配置 -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <!-- 引入 Spring Cloud Sleuth + Zipkin 相关依赖，实现对它们的自动配置，从而实现链路追踪 -->
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-zipkin</artifactId>
+        </dependency>
+    </dependencies>
+
+</project>

labx-13/labx-13-sc-sleuth-sampler/src/main/java/cn/iocoder/springcloud/labx13/springmvcdemo/UserServiceApplication.java

@@ -0,0 +1,13 @@
+package cn.iocoder.springcloud.labx13.springmvcdemo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class UserServiceApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(UserServiceApplication.class, args);
+    }
+
+}

labx-13/labx-13-sc-sleuth-sampler/src/main/java/cn/iocoder/springcloud/labx13/springmvcdemo/controller/UserController.java

@@ -0,0 +1,17 @@
+package cn.iocoder.springcloud.labx13.springmvcdemo.controller;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/user")
+public class UserController {
+
+    @GetMapping("/get")
+    public String get(@RequestParam("id") Integer id) {
+        return "user:" + id;
+    }
+
+}

labx-13/labx-13-sc-sleuth-sampler/src/main/resources/application.yml

@@ -0,0 +1,17 @@
+spring:
+  application:
+    name: user-service # 服务名
+
+  # Zipkin 配置项，对应 ZipkinProperties 类
+  zipkin:
+    base-url: http://127.0.0.1:9411 # Zipkin 服务的地址
+
+  # Spring Cloud Sleuth 配置项
+  sleuth:
+    # Spring Cloud Sleuth 针对 Web 组件的配置项，例如说 SpringMVC
+    web:
+      enabled: true # 是否开启，默认为 true
+    # Spring Cloud Sleuth 针对抽样收集的配置项
+    sampler:
+      probability: 0.1 # 采样百分比，默认为 1.0 全部采样。
+      rate: # 限流采样，即每秒可收集链路的数量，默认为 10。

labx-13/pom.xml

@@ -30,6 +30,7 @@
 
         <module>labx-13-sc-sleuth-logback</module>
         <module>labx-13-sc-sleuth-opentracing</module>
+        <module>labx-13-sc-sleuth-sampler</module>
     </modules>