com.alibaba.dubbo.config.spring.ServiceBean.java Source code

Java tutorial

Introduction

Here is the source code for com.alibaba.dubbo.config.spring.ServiceBean.java

Source

/*
 * 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.spring;

import com.alibaba.dubbo.config.*;
import com.alibaba.dubbo.config.annotation.Service;
import com.alibaba.dubbo.config.spring.extension.SpringExtensionFactory;
import org.springframework.beans.factory.BeanFactoryUtils;
import org.springframework.beans.factory.BeanNameAware;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.context.support.AbstractApplicationContext;

import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * ServiceFactoryBean
 * 
 * @author william.liangf
 * @export
 */
public class ServiceBean<T> extends ServiceConfig<T> implements InitializingBean, DisposableBean,
        ApplicationContextAware, ApplicationListener<ContextRefreshedEvent>, BeanNameAware {

    private static final long serialVersionUID = 213195494150089727L;

    private static transient ApplicationContext SPRING_CONTEXT;

    private transient ApplicationContext applicationContext;

    private transient String beanName;

    private transient boolean supportedApplicationListener;

    public ServiceBean() {
        super();
    }

    public ServiceBean(Service service) {
        super(service);
    }

    public static ApplicationContext getSpringContext() {
        return SPRING_CONTEXT;
    }

    public void setApplicationContext(ApplicationContext applicationContext) {
        this.applicationContext = applicationContext;
        SpringExtensionFactory.addApplicationContext(applicationContext);
        if (applicationContext != null) {
            SPRING_CONTEXT = applicationContext;
            try {
                Method method = applicationContext.getClass().getMethod("addApplicationListener",
                        new Class<?>[] { ApplicationListener.class }); // Spring2.0.1
                method.invoke(applicationContext, new Object[] { this });
                supportedApplicationListener = true;
            } catch (Throwable t) {
                if (applicationContext instanceof AbstractApplicationContext) {
                    try {
                        Method method = AbstractApplicationContext.class.getDeclaredMethod("addListener",
                                new Class<?>[] { ApplicationListener.class }); // Spring2.0.1
                        if (!method.isAccessible()) {
                            method.setAccessible(true);
                        }
                        method.invoke(applicationContext, new Object[] { this });
                        supportedApplicationListener = true;
                    } catch (Throwable t2) {
                    }
                }
            }
        }
    }

    public void setBeanName(String name) {
        this.beanName = name;
    }

    public void onApplicationEvent(ContextRefreshedEvent event) {
        //if (ContextRefreshedEvent.class.getName().equals(event.getClass().getName())) {
        if (isDelay() && !isExported() && !isUnexported()) {
            if (logger.isInfoEnabled()) {
                logger.info("The service ready on spring started. service: " + getInterface());
            }
            export();
        }
        //}
    }

    private boolean isDelay() {
        Integer delay = getDelay();
        ProviderConfig provider = getProvider();
        if (delay == null && provider != null) {
            delay = provider.getDelay();
        }
        return supportedApplicationListener && (delay == null || delay.intValue() == -1);
    }

    @SuppressWarnings({ "deprecation" })
    public void afterPropertiesSet() throws Exception {
        if (getProvider() == null) {
            Map<String, ProviderConfig> providerConfigMap = applicationContext == null ? null
                    : BeanFactoryUtils.beansOfTypeIncludingAncestors(applicationContext, ProviderConfig.class,
                            false, false);
            if (providerConfigMap != null && providerConfigMap.size() > 0) {
                Map<String, ProtocolConfig> protocolConfigMap = applicationContext == null ? null
                        : BeanFactoryUtils.beansOfTypeIncludingAncestors(applicationContext, ProtocolConfig.class,
                                false, false);
                if ((protocolConfigMap == null || protocolConfigMap.size() == 0) && providerConfigMap.size() > 1) { // 
                    List<ProviderConfig> providerConfigs = new ArrayList<ProviderConfig>();
                    for (ProviderConfig config : providerConfigMap.values()) {
                        if (config.isDefault() != null && config.isDefault().booleanValue()) {
                            providerConfigs.add(config);
                        }
                    }
                    if (providerConfigs.size() > 0) {
                        setProviders(providerConfigs);
                    }
                } else {
                    ProviderConfig providerConfig = null;
                    for (ProviderConfig config : providerConfigMap.values()) {
                        if (config.isDefault() == null || config.isDefault().booleanValue()) {
                            if (providerConfig != null) {
                                throw new IllegalStateException(
                                        "Duplicate provider configs: " + providerConfig + " and " + config);
                            }
                            providerConfig = config;
                        }
                    }
                    if (providerConfig != null) {
                        setProvider(providerConfig);
                    }
                }
            }
        }
        if (getApplication() == null && (getProvider() == null || getProvider().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 && (getProvider() == null || getProvider().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)
                && (getProvider() == null || getProvider().getRegistries() == null
                        || getProvider().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 && (getProvider() == null || getProvider().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);
                }
            }
        }
        if ((getProtocols() == null || getProtocols().size() == 0) && (getProvider() == null
                || getProvider().getProtocols() == null || getProvider().getProtocols().size() == 0)) {
            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);
                }
            }
        }
        if (getPath() == null || getPath().length() == 0) {
            if (beanName != null && beanName.length() > 0 && getInterface() != null && getInterface().length() > 0
                    && beanName.startsWith(getInterface())) {
                setPath(beanName);
            }
        }
        if (!isDelay()) {
            export();
        }
    }

    public void destroy() throws Exception {
        unexport();
    }

}