Dubbo服务再暴露
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import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketAddress;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.UUID;
import javax.annotation.Resource;
import org.I0Itec.zkclient.ZkClient;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.BeanFactoryUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.stereotype.Service;
import com.alibaba.dubbo.common.Constants;
import com.alibaba.dubbo.common.URL;
import com.alibaba.dubbo.common.Version;
import com.alibaba.dubbo.common.bytecode.Wrapper;
import com.alibaba.dubbo.common.extension.ExtensionLoader;
import com.alibaba.dubbo.common.utils.ConfigUtils;
import com.alibaba.dubbo.common.utils.NetUtils;
import com.alibaba.dubbo.common.utils.StringUtils;
import com.alibaba.dubbo.config.AbstractServiceConfig;
import com.alibaba.dubbo.config.ApplicationConfig;
import com.alibaba.dubbo.config.ModuleConfig;
import com.alibaba.dubbo.config.MonitorConfig;
import com.alibaba.dubbo.config.ProtocolConfig;
import com.alibaba.dubbo.config.ProviderConfig;
import com.alibaba.dubbo.config.RegistryConfig;
import com.alibaba.dubbo.config.support.Parameter;
import com.alibaba.dubbo.rpc.Exporter;
import com.alibaba.dubbo.rpc.Invoker;
import com.alibaba.dubbo.rpc.Protocol;
import com.alibaba.dubbo.rpc.ProxyFactory;
import com.alibaba.dubbo.rpc.cluster.ConfiguratorFactory;
/**
* 服务状态节点恢复
* 描述: zookeeper分布式管理dubbo服务
* 1、服务正常启动，因外界条件将其相关ip+port端口下的服务删掉
* 2、针对已删除的服务节点再次暴露供消费者调用
* 版权: Copyright (c) 2016
* 作者: kun.tan@
* 版本: 1.0
* 创建日期: 2017年4月14日
* 创建时间: 上午10:26:36
*/
@Service(“serverRecoverService”)
public class ServerRecoverServiceImpl extends AbstractServiceConfig implements ServerRecoverService
{
/** * */private static final long serialVersionUID = 1L;Logger logger = Logger.getLogger(ServerRecoverServiceImpl.class);private static final ProxyFactory proxyFactory = ExtensionLoader.getExtensionLoader(ProxyFactory.class).getAdaptiveExtension();private static final Protocol protocol = ExtensionLoader.getExtensionLoader(Protocol.class).getAdaptiveExtension();@Resourceprivate ApplicationContext applicationContext;protected List<ProtocolConfig> protocols;@Autowiredprivate ZkClient zkClient;@Autowiredprivate ProviderConfig providerConfig;private final List<Exporter<?>> exporters = new ArrayList<Exporter<?>>();private transient volatile boolean exported;private transient volatile boolean unexported;@Parameter(excluded = true)public boolean isExported(){ return exported;}@Parameter(excluded = true)public boolean isUnexported(){ return unexported;}public ProviderConfig getProviderConfigConfig(){ return providerConfig;}public void setProviderConfig(ProviderConfig providerConfig){ this.providerConfig = providerConfig;}/** * @param jsonServerNodes 即将暴露的服务节点 * eg:["com.***.scm.baseservice.sac.manager.test.CodeTempManager","com.***.scm.baseservice.sac.manager.PkManager","com.***.scm.baseservice.sac.service.CodeService","com.***.scm.baseservice.sac.manager.monitor.CodeMonitorManager","com.***.scm.baseservice.sac.manager.task.CommonTaskManager","com.***.scm.baseservice.sac.manager.CodeManager","com.***.scm.baseservice.sac.service.PkService","com.***.scm.baseservice.sac.manager.status.ServerRecoverService"] */public void serverNodeRecover(String jsonServerNodes){ init(); //获取dubbo服务暴露的协议 protocols = getProtocols(); List<URL> registryURLs = loadRegistries(true); Set<String> serviceNodeSet = JsonUtil.readValue(jsonServerNodes, Set.class);//相关的服务节点 for (String node : serviceNodeSet) { for (ProtocolConfig protocolConfig : protocols) { exportNode(node, registryURLs, protocolConfig); } }}/** * 服务节点暴露 * @param interfaceName 服务节点 * @param registryURLs 注册地址 * @param protocolConfig 协议 * 2017年4月18日 下午2:51:17 */@SuppressWarnings({ "unchecked", "rawtypes", "unused" })public void exportNode(String interfaceName, List<URL> registryURLs, ProtocolConfig protocolConfig){ Class<?> interfaceClass = null; // 接口实现类引用 Object ref = null; String name = protocolConfig.getName(); if (name == null || name.length() == 0) { name = "dubbo"; } String host = protocolConfig.getHost(); if (providerConfig != null && (host == null || host.length() == 0)) { host = providerConfig.getHost(); } boolean anyhost = false; if (NetUtils.isInvalidLocalHost(host)) { anyhost = true; try { host = InetAddress.getLocalHost().getHostAddress(); } catch (UnknownHostException e) { logger.warn(e.getMessage(), e); } if (NetUtils.isInvalidLocalHost(host)) { if (registryURLs != null && registryURLs.size() > 0) { for (URL registryURL : registryURLs) { try { Socket socket = new Socket(); try { SocketAddress addr = new InetSocketAddress(registryURL.getHost(), registryURL.getPort()); socket.connect(addr, 1000); host = socket.getLocalAddress().getHostAddress(); break; } finally { try { socket.close(); } catch (Throwable e) { } } } catch (Exception e) { logger.warn(e.getMessage(), e); } } } if (NetUtils.isInvalidLocalHost(host)) { host = NetUtils.getLocalHost(); } } } Integer port = protocolConfig.getPort(); if (providerConfig != null && (port == null || port == 0)) { port = providerConfig.getPort(); } Map<String, String> map = new HashMap<String, String>(); map.put(Constants.ANYHOST_KEY, "true"); map.put(Constants.SIDE_KEY, Constants.PROVIDER_SIDE); map.put(Constants.DUBBO_VERSION_KEY, Version.getVersion()); map.put(Constants.TIMESTAMP_KEY, String.valueOf(System.currentTimeMillis())); if (ConfigUtils.getPid() > 0) { map.put(Constants.PID_KEY, String.valueOf(ConfigUtils.getPid())); } //接口对象 interfaceClass = getInterfaceClass(interfaceName); String revision = Version.getVersion(interfaceClass, getValidation()); if (revision != null && revision.length() > 0) { map.put("revision", revision); } String[] methods = Wrapper.getWrapper(interfaceClass).getMethodNames(); if (methods.length == 0) { logger.warn("NO method found in service interface " + interfaceClass.getName()); map.put("methods", Constants.ANY_VALUE); } else { map.put("methods", StringUtils.join(new HashSet<String>(Arrays.asList(methods)), ",")); } try { //引用对象 ref = applicationContext.getBean(interfaceClass); } catch (SecurityException e) { throw e; } if (!ConfigUtils.isEmpty(token)) { if (ConfigUtils.isDefault(token)) { map.put("token", UUID.randomUUID().toString()); } else { map.put("token", token); } } if ("injvm".equals(protocolConfig.getName())) { protocolConfig.setRegister(false); map.put("notify", "false"); } // 导出服务 String contextPath = protocolConfig.getContextpath(); if ((contextPath == null || contextPath.length() == 0) && providerConfig != null) { contextPath = providerConfig.getContextpath(); } URL url = new URL(name, host, port, (contextPath == null || contextPath.length() == 0 ? "" : contextPath + "/") + interfaceName, map); if (ExtensionLoader.getExtensionLoader(ConfiguratorFactory.class).hasExtension(url.getProtocol())) { url = ExtensionLoader.getExtensionLoader(ConfiguratorFactory.class).getExtension(url.getProtocol()).getConfigurator(url).configure(url); } String scope = url.getParameter(Constants.SCOPE_KEY); //配置为none不暴露 if (!Constants.SCOPE_NONE.toString().equalsIgnoreCase(scope)) { //配置不是remote的情况下做本地暴露 (配置为remote，则表示只暴露远程服务) if (!Constants.SCOPE_REMOTE.toString().equalsIgnoreCase(scope)) { exportLocal(url, ref, interfaceClass); } //如果配置不是local则暴露为远程服务.(配置为local，则表示只暴露远程服务) if (!Constants.SCOPE_LOCAL.toString().equalsIgnoreCase(scope)) { if (logger.isInfoEnabled()) { logger.info("Export dubbo service " + interfaceClass.getName() + " to url " + url); } if (registryURLs != null && registryURLs.size() > 0 && url.getParameter("register", true)) { for (URL registryURL : registryURLs) { url = url.addParameterIfAbsent("dynamic", registryURL.getParameter("dynamic")); URL monitorUrl = loadMonitor(registryURL); if (monitorUrl != null) { url = url.addParameterAndEncoded(Constants.MONITOR_KEY, monitorUrl.toFullString()); } if (logger.isInfoEnabled()) { logger.info("Register dubbo service " + interfaceClass.getName() + " url " + url + " to registry " + registryURL); } Invoker<?> invoker = proxyFactory.getInvoker(ref, (Class) interfaceClass, registryURL.addParameterAndEncoded(Constants.EXPORT_KEY, url.toFullString())); Exporter<?> exporter = protocol.export(invoker); exporters.add(exporter); } } else { Invoker<?> invoker = proxyFactory.getInvoker(ref, (Class) interfaceClass, url); Exporter<?> exporter = protocol.export(invoker); exporters.add(exporter); } } }}@SuppressWarnings({ "unchecked", "rawtypes" })private void exportLocal(URL url, Object ref, Class interfaceClass){ if (!Constants.LOCAL_PROTOCOL.equalsIgnoreCase(url.getProtocol())) { URL local = URL.valueOf(url.toFullString()).setProtocol(Constants.LOCAL_PROTOCOL).setHost(NetUtils.LOCALHOST).setPort(0); Exporter<?> exporter = protocol.export(proxyFactory.getInvoker(ref, (Class) interfaceClass, local)); exporters.add(exporter); logger.info("Export dubbo service " + interfaceClass.getName() + " to local registry"); }}/** * 实例化对象 * @param interfaceName * @return * 2017年4月18日 下午2:42:11 */public Class<?> getInterfaceClass(String interfaceName){ Class<?> interfaceClass = null; try { if (interfaceName != null && interfaceName.length() > 0) { interfaceClass = Class.forName(interfaceName, true, Thread.currentThread().getContextClassLoader()); } } catch (ClassNotFoundException t) { throw new IllegalStateException(t.getMessage(), t); } return interfaceClass;}public synchronized void unexport(){ if (!exported) { return; } if (unexported) { return; } if (exporters != null && exporters.size() > 0) { for (Exporter<?> exporter : exporters) { try { exporter.unexport(); } catch (Throwable t) { logger.warn("unexpected err when unexport" + exporter, t); } } exporters.clear(); } unexported = true;}/** * 再次初始化dubbo服务相关协议请求等信息 * * 2017年4月18日 下午3:40:28 */public void init(){ if (getApplication() == null && (getProviderConfigConfig() == null || getProviderConfigConfig().getApplication() == null)) { Map<String, ApplicationConfig> applicationConfigMap = applicationContext == null ? null : BeanFactoryUtils.beansOfTypeIncludingAncestors(applicationContext, ApplicationConfig.class, false, false); if (applicationConfigMap != null && applicationConfigMap.size() > 0) { ApplicationConfig applicationConfig = null; for (ApplicationConfig config : applicationConfigMap.values()) { if (config.isDefault() == null || config.isDefault().booleanValue()) { if (applicationConfig != null) { throw new IllegalStateException("Duplicate application configs: " + applicationConfig + " and " + config); } applicationConfig = config; } } if (applicationConfig != null) { setApplication(applicationConfig); } } } if (getModule() == null && (getProviderConfigConfig() == null || getProviderConfigConfig().getModule() == null)) { Map<String, ModuleConfig> moduleConfigMap = applicationContext == null ? null : BeanFactoryUtils.beansOfTypeIncludingAncestors(applicationContext, ModuleConfig.class, false, false); if (moduleConfigMap != null && moduleConfigMap.size() > 0) { ModuleConfig moduleConfig = null; for (ModuleConfig config : moduleConfigMap.values()) { if (config.isDefault() == null || config.isDefault().booleanValue()) { if (moduleConfig != null) { throw new IllegalStateException("Duplicate module configs: " + moduleConfig + " and " + config); } moduleConfig = config; } } if (moduleConfig != null) { setModule(moduleConfig); } } } if ((getRegistries() == null || getRegistries().size() == 0) && (getProviderConfigConfig() == null || getProviderConfigConfig().getRegistries() == null || getProviderConfigConfig().getRegistries().size() == 0) && (getApplication() == null || getApplication().getRegistries() == null || getApplication().getRegistries().size() == 0)) { Map<String, RegistryConfig> registryConfigMap = applicationContext == null ? null : BeanFactoryUtils.beansOfTypeIncludingAncestors(applicationContext, RegistryConfig.class, false, false); if (registryConfigMap != null && registryConfigMap.size() > 0) { List<RegistryConfig> registryConfigs = new ArrayList<RegistryConfig>(); for (RegistryConfig config : registryConfigMap.values()) { if (config.isDefault() == null || config.isDefault().booleanValue()) { registryConfigs.add(config); } } if (registryConfigs != null && registryConfigs.size() > 0) { super.setRegistries(registryConfigs); } } } if (getMonitor() == null && (getProviderConfigConfig() == null || getProviderConfigConfig().getMonitor() == null) && (getApplication() == null || getApplication().getMonitor() == null)) { Map<String, MonitorConfig> monitorConfigMap = applicationContext == null ? null : BeanFactoryUtils.beansOfTypeIncludingAncestors(applicationContext, MonitorConfig.class, false, false); if (monitorConfigMap != null && monitorConfigMap.size() > 0) { MonitorConfig monitorConfig = null; for (MonitorConfig config : monitorConfigMap.values()) { if (config.isDefault() == null || config.isDefault().booleanValue()) { if (monitorConfig != null) { throw new IllegalStateException("Duplicate monitor configs: " + monitorConfig + " and " + config); } monitorConfig = config; } } if (monitorConfig != null) { setMonitor(monitorConfig); } } } // 获取协议 Map<String, ProtocolConfig> protocolConfigMap = applicationContext == null ? null : BeanFactoryUtils.beansOfTypeIncludingAncestors(applicationContext, ProtocolConfig.class, false, false); if (protocolConfigMap != null && protocolConfigMap.size() > 0) { List<ProtocolConfig> protocolConfigs = new ArrayList<ProtocolConfig>(); for (ProtocolConfig config : protocolConfigMap.values()) { if (config.isDefault() == null || config.isDefault().booleanValue()) { protocolConfigs.add(config); } } if (protocolConfigs != null && protocolConfigs.size() > 0) { super.setProtocols(protocolConfigs); } }}}
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