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mercyblitz
2019-01-18 19:25:39 +08:00
parent 7aa17d3760
commit 26a05cbefb
17 changed files with 736 additions and 137 deletions
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40
spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/nacos-discovery-provider-example/src/main/java/org/springframework/cloud/alibaba/cloud/examples/EchoController.java Normal file
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@@ -0,0 +1,40 @@
/*
* 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.springframework.cloud.alibaba.cloud.examples;
import com.alibaba.dubbo.config.annotation.Service;
import org.springframework.web.bind.annotation.PathVariable;
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
@Service(version = "1.0.0")
public class EchoController implements EchoService {
@Override
@RequestMapping(value = "/echo/{string}", method = RequestMethod.GET)
public String echo(@PathVariable String string) {
return "hello Nacos Discovery " + string;
}
@Override
@RequestMapping(value = "/divide", method = RequestMethod.GET)
public String divide(@RequestParam Integer a, @RequestParam Integer b) {
return String.valueOf(a / b);
}
}

33
spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/nacos-discovery-provider-example/src/main/java/org/springframework/cloud/alibaba/cloud/examples/EchoService.java Normal file
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@@ -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.springframework.cloud.alibaba.cloud.examples;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
/**
* TODO
*/
public interface EchoService {
@RequestMapping(value = "/echo/{string}", method = RequestMethod.GET)
String echo(@PathVariable String string);
@RequestMapping(value = "/divide", method = RequestMethod.GET)
String divide(@RequestParam Integer a, @RequestParam Integer b);
}

153
spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/nacos-discovery-provider-example/src/main/java/org/springframework/cloud/alibaba/cloud/examples/ProviderApplication.java
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@@ -1,13 +1,30 @@
package org.springframework.cloud.alibaba.cloud.examples;
import com.alibaba.dubbo.config.spring.ServiceBean;
import com.alibaba.dubbo.config.spring.context.event.ServiceBeanExportedEvent;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.web.bind.annotation.PathVariable;
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;
import org.springframework.cloud.client.discovery.event.InstancePreRegisteredEvent;
import org.springframework.cloud.client.serviceregistry.Registration;
import org.springframework.context.event.EventListener;
import java.beans.BeanInfo;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Method;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.net.URL;
import java.util.Date;
import java.util.LinkedHashMap;
import java.util.Map;
import static org.springframework.util.ClassUtils.isPrimitiveOrWrapper;
/**
* @author xiaojing
@@ -16,20 +33,118 @@ import org.springframework.web.bind.annotation.RestController;
@EnableDiscoveryClient
public class ProviderApplication {
public static void main(String[] args) {
SpringApplication.run(ProviderApplication.class, args);
}
public static void main(String[] args) {
SpringApplication.run(ProviderApplication.class, args);
}
@RestController
class EchoController {
@RequestMapping(value = "/echo/{string}", method = RequestMethod.GET)
public String echo(@PathVariable String string) {
return "hello Nacos Discovery " + string;
}
@Autowired
private ConfigurableListableBeanFactory beanFactory;
@RequestMapping(value = "/divide", method = RequestMethod.GET)
public String divide(@RequestParam Integer a, @RequestParam Integer b) {
return String.valueOf(a / b);
}
}
@Autowired
private ObjectMapper objectMapper;
@EventListener(ServiceBeanExportedEvent.class)
public void onServiceBeanExportedEvent(ServiceBeanExportedEvent event) {
ServiceBean serviceBean = event.getServiceBean();
}
@EventListener(InstancePreRegisteredEvent.class)
public void onInstancePreRegisteredEvent(InstancePreRegisteredEvent event) throws JsonProcessingException {
Registration registration = event.getRegistration();
Map<String, ServiceBean> serviceBeansMap = beanFactory.getBeansOfType(ServiceBean.class);
Map<String, String> metaData = registration.getMetadata();
String serviceBeansJson = objectMapper.writeValueAsString(services(serviceBeansMap));
metaData.put("serviceBeans", serviceBeansJson);
}
public Map<String, Map<String, Object>> services(Map<String, ServiceBean> serviceBeansMap) {
Map<String, Map<String, Object>> servicesMetadata = new LinkedHashMap<>(serviceBeansMap.size());
for (Map.Entry<String, ServiceBean> entry : serviceBeansMap.entrySet()) {
String serviceBeanName = entry.getKey();
ServiceBean serviceBean = entry.getValue();
Map<String, Object> serviceBeanMetadata = resolveBeanMetadata(serviceBean);
Object service = resolveServiceBean(serviceBeanName, serviceBean);
if (service != null) {
// Add Service implementation class
serviceBeanMetadata.put("serviceClass", service.getClass().getName());
}
servicesMetadata.put(serviceBeanName, serviceBeanMetadata);
}
return servicesMetadata;
}
protected Map<String, Object> resolveBeanMetadata(final Object bean) {
final Map<String, Object> beanMetadata = new LinkedHashMap<>();
try {
BeanInfo beanInfo = Introspector.getBeanInfo(bean.getClass());
PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();
for (PropertyDescriptor propertyDescriptor : propertyDescriptors) {
Method readMethod = propertyDescriptor.getReadMethod();
if (readMethod != null && isSimpleType(propertyDescriptor.getPropertyType())) {
String name = Introspector.decapitalize(propertyDescriptor.getName());
Object value = readMethod.invoke(bean);
if (value != null) {
beanMetadata.put(name, value);
}
}
}
} catch (Exception e) {
throw new RuntimeException(e);
}
return beanMetadata;
}
private Object resolveServiceBean(String serviceBeanName, ServiceBean serviceBean) {
int index = serviceBeanName.indexOf("#");
if (index > -1) {
Class<?> interfaceClass = serviceBean.getInterfaceClass();
String serviceName = serviceBeanName.substring(index + 1);
if (beanFactory.containsBean(serviceName)) {
return beanFactory.getBean(serviceName, interfaceClass);
}
}
return null;
}
private static boolean isSimpleType(Class<?> type) {
return isPrimitiveOrWrapper(type)
|| type == String.class
|| type == BigDecimal.class
|| type == BigInteger.class
|| type == Date.class
|| type == URL.class
|| type == Class.class
;
}
}

10
spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/nacos-discovery-provider-example/src/main/resources/application.properties
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@@ -1,4 +1,12 @@
server.port=18082
spring.application.name=service-provider
spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848
management.endpoints.web.exposure.include=*
management.endpoints.web.exposure.include=*
dubbo.scan.base-packages=org.springframework.cloud.alibaba.cloud.examples
dubbo.registry.address=nacos://127.0.0.1:8848
dubbo.protocol.name=dubbo
dubbo.protocol.port=-1

36
spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/pom.xml
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@@ -15,11 +15,47 @@
<packaging>pom</packaging>
<description>Example demonstrating how to use nacos discovery</description>
<properties>
<dubbo.version>2.6.5</dubbo.version>
</properties>
<modules>
<module>nacos-discovery-consumer-example</module>
<module>nacos-discovery-provider-example</module>
</modules>
<dependencies>
<!-- Dubbo Spring Boot Starter -->
<dependency>
<groupId>com.alibaba.boot</groupId>
<artifactId>dubbo-spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>${dubbo.version}</version>
</dependency>
<!-- Netty -->
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-all</artifactId>
</dependency>
<!-- Dubbo Nacos registry dependency -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo-registry-nacos</artifactId>
</dependency>
<!-- Keep latest Nacos client version -->
<dependency>
<groupId>com.alibaba.nacos</groupId>
<artifactId>nacos-client</artifactId>
</dependency>
</dependencies>
</project>