Spring Cloud构建微服务架构（五）服务网关

Chapter1-1-5/api-gateway/pom.xml

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+<?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">
+	<modelVersion>4.0.0</modelVersion>
+
+	<groupId>com.didispace</groupId>
+	<artifactId>api-gateway</artifactId>
+	<version>1.0.0</version>
+	<packaging>jar</packaging>
+
+	<name>api-gateway</name>
+	<description>Spring Cloud project</description>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>1.3.5.RELEASE</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<java.version>1.8</java.version>
+	</properties>
+
+	<dependencies>
+
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-starter-zuul</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-starter-eureka</artifactId>
+		</dependency>
+
+	</dependencies>
+
+	<dependencyManagement>
+		<dependencies>
+			<dependency>
+				<groupId>org.springframework.cloud</groupId>
+				<artifactId>spring-cloud-dependencies</artifactId>
+				<version>Brixton.RELEASE</version>
+				<type>pom</type>
+				<scope>import</scope>
+			</dependency>
+		</dependencies>
+	</dependencyManagement>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

Chapter1-1-5/api-gateway/src/main/java/com/didispace/Application.java

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+package com.didispace;
+
+import com.didispace.filter.AccessFilter;
+import org.springframework.boot.builder.SpringApplicationBuilder;
+import org.springframework.cloud.client.SpringCloudApplication;
+import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
+import org.springframework.context.annotation.Bean;
+
+@EnableZuulProxy
+@SpringCloudApplication
+public class Application {
+
+	public static void main(String[] args) {
+		new SpringApplicationBuilder(Application.class).web(true).run(args);
+	}
+
+	@Bean
+	public AccessFilter accessFilter() {
+		return new AccessFilter();
+	}
+
+}

Chapter1-1-5/api-gateway/src/main/java/com/didispace/filter/AccessFilter.java

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+package com.didispace.filter;
+
+import com.netflix.zuul.ZuulFilter;
+import com.netflix.zuul.context.RequestContext;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.servlet.http.HttpServletRequest;
+
+public class AccessFilter extends ZuulFilter  {
+
+    private static Logger log = LoggerFactory.getLogger(AccessFilter.class);
+
+    @Override
+    public String filterType() {
+        return "pre";
+    }
+
+    @Override
+    public int filterOrder() {
+        return 0;
+    }
+
+    @Override
+    public boolean shouldFilter() {
+        return true;
+    }
+
+    @Override
+    public Object run() {
+        RequestContext ctx = RequestContext.getCurrentContext();
+        HttpServletRequest request = ctx.getRequest();
+
+        log.info(String.format("%s request to %s", request.getMethod(), request.getRequestURL().toString()));
+
+        Object accessToken = request.getParameter("accessToken");
+        if(accessToken == null) {
+            log.warn("access token is empty");
+            ctx.setSendZuulResponse(false);
+            ctx.setResponseStatusCode(401);
+            return null;
+        }
+        log.info("access token ok");
+        return null;
+    }
+
+}

Chapter1-1-5/api-gateway/src/main/resources/application.properties

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+spring.application.name=api-gateway
+server.port=5555
+
+# routes to serviceId
+zuul.routes.api-a.path=/api-a/**
+zuul.routes.api-a.serviceId=service-A
+
+zuul.routes.api-b.path=/api-b/**
+zuul.routes.api-b.serviceId=service-B
+
+# routes to url
+zuul.routes.api-a-url.path=/api-a-url/**
+zuul.routes.api-a-url.url=http://localhost:2222/
+
+eureka.client.serviceUrl.defaultZone=http://localhost:1111/eureka/

Chapter1-1-5/eureka-server/pom.xml

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+<?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">
+	<modelVersion>4.0.0</modelVersion>
+
+	<groupId>com.didispace</groupId>
+	<artifactId>eureka-server</artifactId>
+	<version>1.0.0</version>
+	<packaging>jar</packaging>
+
+	<name>eureka-server</name>
+	<description>Spring Cloud project</description>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>1.3.5.RELEASE</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<java.version>1.8</java.version>
+	</properties>
+
+	<dependencies>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-starter-eureka-server</artifactId>
+		</dependency>
+
+	</dependencies>
+
+	<dependencyManagement>
+		<dependencies>
+			<dependency>
+				<groupId>org.springframework.cloud</groupId>
+				<artifactId>spring-cloud-dependencies</artifactId>
+				<version>Brixton.RELEASE</version>
+				<type>pom</type>
+				<scope>import</scope>
+			</dependency>
+		</dependencies>
+	</dependencyManagement>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

Chapter1-1-5/eureka-server/src/main/java/com/didispace/Application.java

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+package com.didispace;
+
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.builder.SpringApplicationBuilder;
+import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
+
+@EnableEurekaServer
+@SpringBootApplication
+public class Application {
+
+	public static void main(String[] args) {
+		new SpringApplicationBuilder(Application.class).web(true).run(args);
+	}
+
+}

Chapter1-1-5/eureka-server/src/main/resources/application.properties

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+server.port=1111
+#eureka.instance.hostname=localhost
+
+eureka.client.register-with-eureka=false
+eureka.client.fetch-registry=false
+eureka.client.serviceUrl.defaultZone=http://localhost:${server.port}/eureka/

Chapter1-1-5/service-A/pom.xml

@@ -0,0 +1,61 @@
+<?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">
+	<modelVersion>4.0.0</modelVersion>
+
+	<groupId>com.didispace</groupId>
+	<artifactId>service-A</artifactId>
+	<version>1.0.0</version>
+	<packaging>jar</packaging>
+
+	<name>service-A</name>
+	<description>Spring Cloud project</description>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>1.3.5.RELEASE</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<java.version>1.8</java.version>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-starter-eureka</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+
+	</dependencies>
+
+	<dependencyManagement>
+		<dependencies>
+			<dependency>
+				<groupId>org.springframework.cloud</groupId>
+				<artifactId>spring-cloud-dependencies</artifactId>
+				<version>Brixton.RELEASE</version>
+				<type>pom</type>
+				<scope>import</scope>
+			</dependency>
+		</dependencies>
+	</dependencyManagement>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

Chapter1-1-5/service-A/src/main/java/com/didispace/ComputeServiceApplication.java

@@ -0,0 +1,15 @@
+package com.didispace;
+
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.builder.SpringApplicationBuilder;
+import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
+
+@EnableDiscoveryClient
+@SpringBootApplication
+public class ComputeServiceApplication {
+
+	public static void main(String[] args) {
+		new SpringApplicationBuilder(ComputeServiceApplication.class).web(true).run(args);
+	}
+
+}

Chapter1-1-5/service-A/src/main/java/com/didispace/web/ComputeController.java

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+package com.didispace.web;
+
+import org.apache.log4j.Logger;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.cloud.client.ServiceInstance;
+import org.springframework.cloud.client.discovery.DiscoveryClient;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class ComputeController {
+
+    private final Logger logger = Logger.getLogger(getClass());
+
+    @Autowired
+    private DiscoveryClient client;
+
+    @RequestMapping(value = "/add" ,method = RequestMethod.GET)
+    public String add(@RequestParam Integer a, @RequestParam Integer b) {
+        ServiceInstance instance = client.getLocalServiceInstance();
+        Integer r = a + b;
+        logger.info("/add, host:" + instance.getHost() + ", service_id:" + instance.getServiceId() + ", result:" + r);
+        return "From Service-A, Result is " + r;
+    }
+
+}

Chapter1-1-5/service-A/src/main/resources/application.properties

@@ -0,0 +1,6 @@
+spring.application.name=service-A
+
+server.port=2222
+
+eureka.client.serviceUrl.defaultZone=http://localhost:1111/eureka/
+

Chapter1-1-5/service-A/src/test/java/com/didispace/ApplicationTests.java

@@ -0,0 +1,37 @@
+package com.didispace;
+
+import com.didispace.web.ComputeController;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.SpringApplicationConfiguration;
+import org.springframework.http.MediaType;
+import org.springframework.mock.web.MockServletContext;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.web.WebAppConfiguration;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+
+import static org.hamcrest.Matchers.equalTo;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringApplicationConfiguration(classes = MockServletContext.class)
+@WebAppConfiguration
+public class ApplicationTests {
+
+	private MockMvc mvc;
+
+	@Before
+	public void setUp() throws Exception {
+		mvc = MockMvcBuilders.standaloneSetup(new ComputeController()).build();
+	}
+
+	@Test
+	public void getHello() throws Exception {
+	}
+
+}