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/*
* 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.apache.dubbo.config.spring.reference;
import org.apache.dubbo.common.logger.Logger;
import org.apache.dubbo.common.logger.LoggerFactory;
import org.apache.dubbo.config.AbstractConfig;
import org.apache.dubbo.config.ArgumentConfig;
import org.apache.dubbo.config.ConsumerConfig;
import org.apache.dubbo.config.MethodConfig;
import org.apache.dubbo.config.ModuleConfig;
import org.apache.dubbo.config.MonitorConfig;
import org.apache.dubbo.config.ReferenceConfig;
import org.apache.dubbo.config.annotation.Argument;
import org.apache.dubbo.config.annotation.DubboReference;
import org.apache.dubbo.config.annotation.Method;
import org.apache.dubbo.config.spring.beans.factory.annotation.AnnotationPropertyValuesAdapter;
import org.apache.dubbo.config.spring.util.DubboAnnotationUtils;
import org.apache.dubbo.config.spring.util.DubboBeanUtils;
import org.apache.dubbo.rpc.model.ModuleModel;
import com.alibaba.spring.util.AnnotationUtils;
import org.springframework.beans.propertyeditors.StringTrimmerEditor;
import org.springframework.context.ApplicationContext;
import org.springframework.core.convert.support.DefaultConversionService;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
import org.springframework.validation.DataBinder;
import java.util.Map;
import static com.alibaba.spring.util.AnnotationUtils.getAttribute;
import static com.alibaba.spring.util.ObjectUtils.of;
/**
* {@link ReferenceConfig} Creator for @{@link DubboReference}
*
* @since 3.0
*/
public class ReferenceCreator {
// Ignore those fields
static final String[] IGNORE_FIELD_NAMES = of("application", "module", "consumer", "monitor", "registry", "interfaceClass");
private static final String ONRETURN = "onreturn";
private static final String ONTHROW = "onthrow";
private static final String ONINVOKE = "oninvoke";
private static final String ISRETURN = "isReturn";
private static final String METHOD = "Method";
protected final Logger logger = LoggerFactory.getLogger(getClass());
protected final Map attributes;
protected final ApplicationContext applicationContext;
protected final ClassLoader classLoader;
protected Class defaultInterfaceClass;
private final ModuleModel moduleModel;
private ReferenceCreator(Map attributes, ApplicationContext applicationContext) {
Assert.notNull(attributes, "The Annotation attributes must not be null!");
Assert.notNull(applicationContext, "The ApplicationContext must not be null!");
this.attributes = attributes;
this.applicationContext = applicationContext;
this.classLoader = applicationContext.getClassLoader() != null ?
applicationContext.getClassLoader() : Thread.currentThread().getContextClassLoader();
moduleModel = DubboBeanUtils.getModuleModel(applicationContext);
Assert.notNull(moduleModel, "ModuleModel not found in Spring ApplicationContext");
}
public final ReferenceConfig build() throws Exception {
ReferenceConfig configBean = new ReferenceConfig();
configureBean(configBean);
if (logger.isInfoEnabled()) {
logger.info("The configBean[type:" +
configBean.getClass().getSimpleName() + "<" + defaultInterfaceClass.getTypeName() + ">" +
"] has been built.");
}
return configBean;
}
protected void configureBean(ReferenceConfig referenceConfig) throws Exception {
populateBean(referenceConfig);
configureMonitorConfig(referenceConfig);
configureModuleConfig(referenceConfig);
configureConsumerConfig(referenceConfig);
}
private void configureMonitorConfig(ReferenceConfig configBean) {
String monitorConfigId = getAttribute(attributes, "monitor");
if (StringUtils.hasText(monitorConfigId)) {
MonitorConfig monitorConfig = getConfig(monitorConfigId, MonitorConfig.class);
configBean.setMonitor(monitorConfig);
}
}
private void configureModuleConfig(ReferenceConfig configBean) {
String moduleConfigId = getAttribute(attributes, "module");
if (StringUtils.hasText(moduleConfigId)) {
ModuleConfig moduleConfig = getConfig(moduleConfigId, ModuleConfig.class);
configBean.setModule(moduleConfig);
}
}
private void configureConsumerConfig(ReferenceConfig referenceBean) {
ConsumerConfig consumerConfig = null;
Object consumer = getAttribute(attributes, "consumer");
if (consumer != null) {
if (consumer instanceof String) {
consumerConfig = getConfig((String) consumer, ConsumerConfig.class);
} else if (consumer instanceof ConsumerConfig) {
consumerConfig = (ConsumerConfig) consumer;
} else {
throw new IllegalArgumentException("Unexpected 'consumer' attribute value: " + consumer);
}
referenceBean.setConsumer(consumerConfig);
}
}
private T getConfig(String configIdOrName, Class configType) {
// 1. find in ModuleConfigManager
T config = moduleModel.getConfigManager().getConfig(configType, configIdOrName).orElse(null);
if (config == null) {
// 2. find in Spring ApplicationContext
if (applicationContext.containsBean(configIdOrName)) {
config = applicationContext.getBean(configIdOrName, configType);
}
}
if (config == null) {
throw new IllegalArgumentException(configType.getSimpleName() + " not found: " + configIdOrName);
}
return config;
}
protected void populateBean(ReferenceConfig referenceConfig) {
Assert.notNull(defaultInterfaceClass, "The default interface class cannot be empty!");
// convert attributes, e.g. interface, registry
ReferenceBeanSupport.convertReferenceProps(attributes, defaultInterfaceClass);
DataBinder dataBinder = new DataBinder(referenceConfig);
// Register CustomEditors for special fields
dataBinder.registerCustomEditor(String.class, "filter", new StringTrimmerEditor(true));
dataBinder.registerCustomEditor(String.class, "listener", new StringTrimmerEditor(true));
DefaultConversionService conversionService = new DefaultConversionService();
// convert String[] to Map (such as @Method.parameters())
conversionService.addConverter(String[].class, Map.class, DubboAnnotationUtils::convertParameters);
//convert Map to MethodConfig
conversionService.addConverter(Map.class, MethodConfig.class, source -> createMethodConfig(source, conversionService));
//convert @Method to MethodConfig
conversionService.addConverter(Method.class, MethodConfig.class, source -> {
Map methodAttributes = AnnotationUtils.getAnnotationAttributes(source, true);
return createMethodConfig(methodAttributes, conversionService);
});
//convert Map to ArgumentConfig
conversionService.addConverter(Map.class, ArgumentConfig.class, source -> {
ArgumentConfig argumentConfig = new ArgumentConfig();
DataBinder argDataBinder = new DataBinder(argumentConfig);
argDataBinder.setConversionService(conversionService);
argDataBinder.bind(new AnnotationPropertyValuesAdapter(source, applicationContext.getEnvironment()));
return argumentConfig;
});
//convert @Argument to ArgumentConfig
conversionService.addConverter(Argument.class, ArgumentConfig.class, source -> {
ArgumentConfig argumentConfig = new ArgumentConfig();
DataBinder argDataBinder = new DataBinder(argumentConfig);
argDataBinder.setConversionService(conversionService);
argDataBinder.bind(new AnnotationPropertyValuesAdapter(source, applicationContext.getEnvironment()));
return argumentConfig;
});
// Bind annotation attributes
dataBinder.setConversionService(conversionService);
dataBinder.bind(new AnnotationPropertyValuesAdapter(attributes, applicationContext.getEnvironment(), IGNORE_FIELD_NAMES));
}
private MethodConfig createMethodConfig(Map methodAttributes, DefaultConversionService conversionService) {
String[] callbacks = new String[]{ONINVOKE, ONRETURN, ONTHROW};
for (String callbackName : callbacks) {
Object value = methodAttributes.get(callbackName);
if (value instanceof String) {
//parse callback: beanName.methodName
String strValue = (String) value;
int index = strValue.lastIndexOf(".");
if (index != -1) {
String beanName = strValue.substring(0, index);
String methodName = strValue.substring(index + 1);
methodAttributes.put(callbackName, applicationContext.getBean(beanName));
methodAttributes.put(callbackName + METHOD, methodName);
} else {
methodAttributes.put(callbackName, applicationContext.getBean(strValue));
}
}
}
MethodConfig methodConfig = new MethodConfig();
DataBinder mcDataBinder = new DataBinder(methodConfig);
methodConfig.setReturn((Boolean) methodAttributes.get(ISRETURN));
mcDataBinder.setConversionService(conversionService);
AnnotationPropertyValuesAdapter propertyValues = new AnnotationPropertyValuesAdapter(methodAttributes, applicationContext.getEnvironment());
mcDataBinder.bind(propertyValues);
return methodConfig;
}
public static ReferenceCreator create(Map attributes, ApplicationContext applicationContext) {
return new ReferenceCreator(attributes, applicationContext);
}
public ReferenceCreator defaultInterfaceClass(Class interfaceClass) {
this.defaultInterfaceClass = interfaceClass;
return this;
}
}