/*
* Copyright 1999-2011 Alibaba Group.
*
* Licensed 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 com.alibaba.dubbo.config;
import java.lang.reflect.Method;
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.UUID;
import com.alibaba.dubbo.common.Constants;
import com.alibaba.dubbo.common.ExtensionLoader;
import com.alibaba.dubbo.common.URL;
import com.alibaba.dubbo.common.Version;
import com.alibaba.dubbo.common.bytecode.Wrapper;
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.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.RpcConstants;
import com.alibaba.dubbo.rpc.service.GenericService;
/**
* ServiceConfig
*
* @author william.liangf
*/
public class ServiceConfig<T> extends AbstractServiceConfig {
private static final long serialVersionUID = 3033787999037024738L;
private static final Protocol protocol = ExtensionLoader.getExtensionLoader(Protocol.class).getAdaptiveExtension();
private static final ProxyFactory proxyFactory = ExtensionLoader.getExtensionLoader(ProxyFactory.class).getAdaptiveExtension();
// 接口类型
private String interfaceName;
private Class<?> interfaceClass;
// 接口实现类引用
private T ref;
// 服务名称
private String path;
// 是否注册
private Boolean register;
// 方法配置
private List<MethodConfig> methods;
private ProviderConfig provider;
private final List<URL> urls = new ArrayList<URL>();
private final List<Exporter<?>> exporters = new ArrayList<Exporter<?>>();
private transient boolean exported;
private transient boolean unexported;
private transient boolean generic;
public List<URL> toUrls() {
return urls;
}
public synchronized void export() {
if (delay != null && delay > 0) {
Thread thread = new Thread(new Runnable() {
public void run() {
try {
Thread.sleep(delay);
} catch (Throwable e) {
}
doExport();
}
});
thread.setDaemon(true);
thread.setName("DelayExportServiceThread");
thread.start();
} else {
doExport();
}
}
protected synchronized void doExport() {
if (unexported) {
throw new IllegalStateException("Already unexported!");
}
if (exported) {
return;
}
if (interfaceName == null || interfaceName.length() == 0) {
throw new IllegalStateException("<dubbo:service interface=\"\" /> interface not allow null!");
}
checkDefault();
if (provider != null) {
if (application == null) {
application = provider.getApplication();
}
if (registries == null) {
registries = provider.getRegistries();
}
if (monitor == null) {
monitor = provider.getMonitor();
}
if (protocols == null) {
protocols = provider.getProtocols();
}
}
if (application != null) {
if (registries == null) {
registries = application.getRegistries();
}
if (monitor == null) {
monitor = application.getMonitor();
}
}
if (ref instanceof GenericService) {
interfaceClass = GenericService.class;
generic = true;
} else {
try {
interfaceClass = Class.forName(interfaceName, true, Thread.currentThread()
.getContextClassLoader());
} catch (ClassNotFoundException e) {
throw new IllegalStateException(e.getMessage(), e);
}
checkInterfaceAndMethods(interfaceClass, methods);
checkRef();
generic = false;
}
if(local !=null){
if(local=="true"){
local=interfaceName+"Local";
}
Class<?> localClass;
try {
localClass = Class.forName(local);
} catch (ClassNotFoundException e) {
throw new IllegalStateException(e.getMessage(), e);
}
if(!interfaceClass.isAssignableFrom(localClass)){
throw new IllegalStateException("The local implemention class " + localClass.getName() + " not implement interface " + interfaceName);
}
}
if(stub !=null){
if(stub=="true"){
stub=interfaceName+"Stub";
}
Class<?> stubClass;
try {
stubClass = Class.forName(stub);
} catch (ClassNotFoundException e) {
throw new IllegalStateException(e.getMessage(), e);
}
if(!interfaceClass.isAssignableFrom(stubClass)){
throw new IllegalStateException("The stub implemention class " + stubClass.getName() + " not implement interface " + interfaceName);
}
}
checkApplication();
checkRegistry();
checkProtocol();
checkStubAndMock(interfaceClass);
if (path == null || path.length() == 0) {
path = interfaceName;
}
doExportUrls();
exported = true;
}
private void checkRef() {
// 检查引用不为空，并且引用必需实现接口
if (ref == null) {
throw new IllegalStateException("ref not allow null!");
}
if (! interfaceClass.isInstance(ref)) {
throw new IllegalStateException("The class "
+ ref.getClass().getName() + " unimplemented interface "
+ 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;
}
@SuppressWarnings({ "unchecked", "rawtypes" })
private void doExportUrls() {
List<URL> registryURLs = loadRegistries();
for (ProtocolConfig protocolConfig : protocols) {
String name = System.getProperty("dubbo.protocol.name", protocolConfig.getName());
if (name == null || name.length() == 0) {
name = "dubbo";
}
String host = System.getProperty("dubbo.protocol.host", protocolConfig.getHost());
if (provider != null && (host == null || host.length() == 0)) {
host = provider.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();
}
}
}
String sp = System.getProperty("dubbo.protocol.port");
Integer port = (sp != null && sp.length() > 0 ? Integer.valueOf(sp) : protocolConfig.getPort());
if (provider != null && (port == null || port == 0)) {
port = provider.getPort();
}
if (port == null || port == 0) {
port = ExtensionLoader.getExtensionLoader(Protocol.class).getExtension(name).getDefaultPort();
}
if (port == null || port <= 0) {
port = NetUtils.getAvailablePort();
logger.warn("Use random available port(" + port + ") for protocol " + name);
}
Map<String, String> map = new HashMap<String, String>();
if (anyhost) {
map.put(Constants.ANYHOST_KEY, "true");
}
map.put("dubbo", Version.getVersion());
appendParameters(map, application);
appendParameters(map, provider);
appendParameters(map, protocolConfig);
appendParameters(map, this);
map.put("prompt", "dubbo");
if (methods != null && methods.size() > 0) {
for (MethodConfig method : methods) {
appendParameters(map, method, method.getName());
String retryKey = method.getName() + ".retry";
if (map.containsKey(retryKey)) {
String retryValue = map.remove(retryKey);
if ("false".equals(retryValue)) {
map.put(method.getName() + ".retries", "0");
}
}
List<ArgumentConfig> arguments = method.getArguments();
if (arguments != null && arguments.size() > 0) {
for (ArgumentConfig argument : arguments) {
//类型自动转换.
if(argument.getType() != null && argument.getType().length() >0){
Method[] methods = interfaceClass.getMethods();
//遍历所有方法
if(methods != null && methods.length > 0){
for (int i = 0; i < methods.length; i++) {
String methodName = methods[i].getName();
//匹配方法名称，获取方法签名.
if(methodName.equals(method.getName())){
Class<?>[] argtypes = methods[i].getParameterTypes();
//一个方法中单个callback
if (argument.getIndex() != -1 ){
if (argtypes[argument.getIndex()].getName().equals(argument.getType())){
appendParameters(map, argument, method.getName() + "." + argument.getIndex());
}else {
throw new IllegalArgumentException("argument config error : the index attribute and type attirbute not match :index :"+argument.getIndex() + ", type:" + argument.getType());
}
} else {
//一个方法中多个callback
for (int j = 0 ;j<argtypes.length ;j++) {
Class<?> argclazz = argtypes[j];
if (argclazz.getName().equals(argument.getType())){
appendParameters(map, argument, method.getName() + "." + j);
if (argument.getIndex() != -1 && argument.getIndex() != j){
throw new IllegalArgumentException("argument config error : the index attribute and type attirbute not match :index :"+argument.getIndex() + ", type:" + argument.getType());
}
}
}
}
}
}
}
}else if(argument.getIndex() != -1){
appendParameters(map, argument, method.getName() + "." + argument.getIndex());
}else {
throw new IllegalArgumentException("argument config must set index or type attribute.eg: <dubbo:argument index='0' .../> or <dubbo:argument type=xxx .../>");
}
}
}
}
}
if (generic) {
map.put("generic", String.valueOf(true));
map.put("methods", Constants.ANY_VALUE);
} else {
map.put("revision", Version.getVersion(interfaceClass, version));
map.put("methods", StringUtils.join(new HashSet<String>(Arrays.asList(Wrapper.getWrapper(interfaceClass).getDeclaredMethodNames())), ","));
}
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) && provider != null) {
contextPath = provider.getContextpath();
}
URL url = new URL(name, host, port, (contextPath == null || contextPath.length() == 0 ? "" : contextPath + "/") + path, map);
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 monitorUrl = loadMonitor(registryURL);
if (monitorUrl != null) {
url = url.addParameterAndEncoded(Constants.MONITOR_KEY, monitorUrl.toFullString());
}
String providerURL = url.toFullString();
if (logger.isInfoEnabled()) {
logger.info("Register dubbo service " + interfaceClass.getName() + " url " + providerURL + " to registry " + registryURL);
}
Invoker<?> invoker = proxyFactory.getInvoker(ref, (Class) interfaceClass, registryURL.addParameterAndEncoded(RpcConstants.EXPORT_KEY, providerURL));
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);
}
this.urls.add(url);
}
}
private void checkDefault() {
if (provider == null) {
provider = new ProviderConfig();
}
appendProperties(provider, "dubbo.provider");
}
private void checkProtocol() {
if ((protocols == null || protocols.size() == 0)
&& provider != null) {
setProtocols(provider.getProtocols());
}
// 兼容旧版本
if (protocols == null || protocols.size() == 0) {
ProtocolConfig protocolConfig = new ProtocolConfig();
String p = ConfigUtils.getProperty("dubbo.service.protocol");
if (p != null && p.length() > 0) {
protocolConfig.setName(p);
}
String h = ConfigUtils.getProperty("dubbo.service.server.host");
if (h != null && h.length() > 0) {
protocolConfig.setHost(h);
}
String o = ConfigUtils.getProperty("dubbo.service.server.port");
if (o != null && o.length() > 0) {
protocolConfig.setPort(Integer.parseInt(o.trim()));
}
String t = ConfigUtils.getProperty("dubbo.service.max.thread.pool.size");
if (t != null && t.length() > 0) {
protocolConfig.setThreads(Integer.parseInt(t.trim()));
}
setProtocol(protocolConfig);
}
for (ProtocolConfig protocolConfig : protocols) {
appendProperties(protocolConfig, "dubbo.protocol");
}
}
public Class<?> getInterfaceClass() {
if (interfaceClass != null) {
return interfaceClass;
}
if (ref instanceof GenericService) {
return GenericService.class;
}
try {
if (interfaceName != null && interfaceName.length() > 0) {
this.interfaceClass = Class.forName(interfaceName, true, Thread.currentThread()
.getContextClassLoader());
}
} catch (ClassNotFoundException t) {
throw new IllegalStateException(t.getMessage(), t);
}
return interfaceClass;
}
/**
* @deprecated
* @see #setInterface(Class)
* @param interfaceClass
*/
public void setInterfaceClass(Class<?> interfaceClass) {
setInterface(interfaceClass);
}
public String getInterface() {
return interfaceName;
}
public void setInterface(String interfaceName) {
this.interfaceName = interfaceName;
}
public void setInterface(Class<?> interfaceClass) {
if (interfaceClass != null && ! interfaceClass.isInterface()) {
throw new IllegalStateException("The interface class " + interfaceClass + " is not a interface!");
}
this.interfaceClass = interfaceClass;
this.interfaceName = interfaceClass == null ? null : interfaceClass.getName();
}
public T getRef() {
return ref;
}
public void setRef(T ref) {
this.ref = ref;
}
@Parameter(excluded = true)
public String getPath() {
return path;
}
public void setPath(String path) {
checkPathName("path", path);
this.path = path;
}
public Boolean isRegister() {
return register;
}
public void setRegister(Boolean register) {
this.register = register;
if (Boolean.FALSE.equals(register)) {
setRegistry(new RegistryConfig(RegistryConfig.NO_AVAILABLE));
}
}
public List<MethodConfig> getMethods() {
return methods;
}
@SuppressWarnings("unchecked")
public void setMethods(List<? extends MethodConfig> methods) {
this.methods = (List<MethodConfig>) methods;
}
public ProviderConfig getProvider() {
return provider;
}
public void setProvider(ProviderConfig provider) {
this.provider = provider;
}
public List<URL> getExportedUrls(){
return urls;
}
// ======== Deprecated ========
/**
* @deprecated Replace to getProtocols()
*/
@Deprecated
public List<ProviderConfig> getProviders() {
return convertProtocolToProvider(protocols);
}
/**
* @deprecated Replace to setProtocols()
*/
@Deprecated
public void setProviders(List<ProviderConfig> providers) {
this.protocols = convertProviderToProtocol(providers);
}
@Deprecated
private static final List<ProtocolConfig> convertProviderToProtocol(List<ProviderConfig> providers) {
if (providers == null || providers.size() == 0) {
return null;
}
List<ProtocolConfig> protocols = new ArrayList<ProtocolConfig>(providers.size());
for (ProviderConfig provider : providers) {
protocols.add(convertProviderToProtocol(provider));
}
return protocols;
}
@Deprecated
private static final List<ProviderConfig> convertProtocolToProvider(List<ProtocolConfig> protocols) {
if (protocols == null || protocols.size() == 0) {
return null;
}
List<ProviderConfig> providers = new ArrayList<ProviderConfig>(protocols.size());
for (ProtocolConfig provider : protocols) {
providers.add(convertProtocolToProvider(provider));
}
return providers;
}
@Deprecated
private static final ProtocolConfig convertProviderToProtocol(ProviderConfig provider) {
ProtocolConfig protocol = new ProtocolConfig();
protocol.setName(provider.getProtocol().getName());
protocol.setServer(provider.getServer());
protocol.setClient(provider.getClient());
protocol.setCodec(provider.getCodec());
protocol.setHost(provider.getHost());
protocol.setPort(provider.getPort());
protocol.setPath(provider.getPath());
protocol.setPayload(provider.getPayload());
protocol.setThreads(provider.getThreads());
protocol.setParameters(provider.getParameters());
return protocol;
}
@Deprecated
private static final ProviderConfig convertProtocolToProvider(ProtocolConfig protocol) {
ProviderConfig provider = new ProviderConfig();
provider.setProtocol(protocol);
provider.setServer(protocol.getServer());
provider.setClient(protocol.getClient());
provider.setCodec(protocol.getCodec());
provider.setHost(protocol.getHost());
provider.setPort(protocol.getPort());
provider.setPath(protocol.getPath());
provider.setPayload(protocol.getPayload());
provider.setThreads(protocol.getThreads());
provider.setParameters(protocol.getParameters());
return provider;
}
}