BeanDefinition有了，就会创建bean，bean的创建中，提到了如果实现了InitializingBean接口，就调用他的afterPropertiesSet方法，刚好，上面的bean有两个是实现了InitializingBean接口。分布是ServiceBean和ReferenceBean，这边先看看ServiceBean。afterPropertiesSet方法主要是各种属性设置，包括ProviderConfig、ProtocolConfig、ApplicationConfig、ModuleConfig、registryIds、RegistryConfig、MetadataReportConfig、ConfigCenterConfig、MonitorConfig、MetricsConfig、ProtocolIds、ProtocolConfig、path。
ProviderConfig
如果没有定义ProviderConfig，则设置ProviderConfig和ProtocolConfig
if (getProvider() == null) {
// 获取ProviderConfig类型的bean
Map<String, ProviderConfig> providerConfigMap = applicationContext == null ? null : BeanFactoryUtils.beansOfTypeIncludingAncestors(applicationContext, ProviderConfig.class, false, false);
if (providerConfigMap != null && providerConfigMap.size() > 0) {
// 如果ProviderConfig存在，获取ProtocolConfig类型的bean
Map<String, ProtocolConfig> protocolConfigMap = applicationContext == null ? null : BeanFactoryUtils.beansOfTypeIncludingAncestors(applicationContext, ProtocolConfig.class, false, false);
if (CollectionUtils.isEmptyMap(protocolConfigMap)
&& providerConfigMap.size() > 1) { // backward compatibility
// protocolConfigMap为空，且有多个ProviderConfig的时候，取默认
List<ProviderConfig> providerConfigs = new ArrayList<ProviderConfig>();
for (ProviderConfig config : providerConfigMap.values()) {
if (config.isDefault() != null && config.isDefault()) {
providerConfigs.add(config);
}
}
//把多个providerConfigs的值，赋值给ProtocolConfig
if (!providerConfigs.isEmpty()) {
setProviders(providerConfigs);
}
} else {
// 这边只有两个情况：protocolConfigMap为空，providerConfigMap只有一个，或protocolConfigMap不为空，providerConfigMap有多个
// 只能有一个默认的providerConfig
ProviderConfig providerConfig = null;
for (ProviderConfig config : providerConfigMap.values()) {
if (config.isDefault() == null || config.isDefault()) {
if (providerConfig != null) {
throw new IllegalStateException("Duplicate provider configs: " + providerConfig + " and " + config);
}
providerConfig = config;
}
}
if (providerConfig != null) {
setProvider(providerConfig);
}
}
}
}ApplicationConfig
ApplicationConfig没有设置过，并且ProviderConfig的ApplicationConfig也没设置过的时候，设置ApplicationConfig，有且只有一个ApplicationConfig
if (getApplication() == null
&& (getProvider() == null || getProvider().getApplication() == null)) {
// 获取ApplicationConfig类型的bean
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()) {
// 只能设置一个ApplicationConfig
if (applicationConfig != null) {
throw new IllegalStateException("Duplicate application configs: " + applicationConfig + " and " + config);
}
applicationConfig = config;
}
if (applicationConfig != null) {
setApplication(applicationConfig);
}
}
}ModuleConfig
没有设置过，并且ProviderConfig的ModuleConfig也没设置过的时候，设置ModuleConfig，有且只有一个ModuleConfig
if (getModule() == null
&& (getProvider() == null || getProvider().getModule() == null)) {
// 获取ModuleConfig类型的bean
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()) {
// // 只能设置一个默认的ModuleConfig
if (config.isDefault() == null || config.isDefault()) {
if (moduleConfig != null) {
throw new IllegalStateException("Duplicate module configs: " + moduleConfig + " and " + config);
}
moduleConfig = config;
}
}
if (moduleConfig != null) {
setModule(moduleConfig);
}
}
}registryIds
设置registryIds，如果都有值，ProviderConfig会覆盖ApplicationConfig的registryIds
if (StringUtils.isEmpty(getRegistryIds())) {
if (getApplication() != null && StringUtils.isNotEmpty(getApplication().getRegistryIds())) {
setRegistryIds(getApplication().getRegistryIds());
}
if (getProvider() != null && StringUtils.isNotEmpty(getProvider().getRegistryIds())) {
setRegistryIds(getProvider().getRegistryIds());
}
}RegistryConfig
如果ServiceBean、ProviderConfig、ApplicationConfig都没有RegistryConfig信息，则通过id从spring容器添加，如果spring容器也没有对应的id，则加个默认的
if ((CollectionUtils.isEmpty(getRegistries()))
&& (getProvider() == null || CollectionUtils.isEmpty(getProvider().getRegistries()))
&& (getApplication() == null || CollectionUtils.isEmpty(getApplication().getRegistries()))) {
// 获取RegistryConfig类型的bean
Map<String, RegistryConfig> registryConfigMap = applicationContext == null ? null : BeanFactoryUtils.beansOfTypeIncludingAncestors(applicationContext, RegistryConfig.class, false, false);
if (CollectionUtils.isNotEmptyMap(registryConfigMap)) {
// 遍历判断id，把spring容器的RegistryConfig添加到registryConfigs
List<RegistryConfig> registryConfigs = new ArrayList<>();
if (StringUtils.isNotEmpty(registryIds)) {
Arrays.stream(COMMA_SPLIT_PATTERN.split(registryIds)).forEach(id -> {
if (registryConfigMap.containsKey(id)) {
registryConfigs.add(registryConfigMap.get(id));
}
});
}
// 如果还是空，把默认的加入到registryConfigs
if (registryConfigs.isEmpty()) {
for (RegistryConfig config : registryConfigMap.values()) {
if (StringUtils.isEmpty(registryIds) && (config.isDefault() == null || config.isDefault().booleanValue())) {
registryConfigs.add(config);
}
}
}
// 设置到Registries
if (!registryConfigs.isEmpty()) {
super.setRegistries(registryConfigs);
}
}
}MetadataReportConfig
if (getMetadataReportConfig() == null) {
// 获取MetadataReportConfig类型的bean，只能设置一个
Map<String, MetadataReportConfig> metadataReportConfigMap = applicationContext == null ? null : BeanFactoryUtils.beansOfTypeIncludingAncestors(applicationContext, MetadataReportConfig.class, false, false);
if (metadataReportConfigMap != null && metadataReportConfigMap.size() == 1) {
super.setMetadataReportConfig(metadataReportConfigMap.values().iterator().next());
} else if (metadataReportConfigMap != null && metadataReportConfigMap.size() > 1) {
throw new IllegalStateException("Multiple MetadataReport configs: " + metadataReportConfigMap);
}
}ConfigCenterConfig
if (getConfigCenter() == null) {
// 获取ConfigCenterConfig类型的bean，只能设置一个
Map<String, ConfigCenterConfig> configenterMap = applicationContext == null ? null : BeanFactoryUtils.beansOfTypeIncludingAncestors(applicationContext, ConfigCenterConfig.class, false, false);
if (configenterMap != null && configenterMap.size() == 1) {
super.setConfigCenter(configenterMap.values().iterator().next());
} else if (configenterMap != null && configenterMap.size() > 1) {
throw new IllegalStateException("Multiple ConfigCenter found:" + configenterMap);
}
}MonitorConfig
if (getMonitor() == null
&& (getProvider() == null || getProvider().getMonitor() == null)
&& (getApplication() == null || getApplication().getMonitor() == null)) {
// 获取MonitorConfig类型的bean，只能设置一个默认
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()) {
if (monitorConfig != null) {
throw new IllegalStateException("Duplicate monitor configs: " + monitorConfig + " and " + config);
}
monitorConfig = config;
}
}
if (monitorConfig != null) {
setMonitor(monitorConfig);
}
}
}MetricsConfig
if (getMetrics() == null) {
// 获取MetricsConfig类型的bean，只能设置一个
Map<String, MetricsConfig> metricsConfigMap = applicationContext == null ? null : BeanFactoryUtils.beansOfTypeIncludingAncestors(applicationContext, MetricsConfig.class, false, false);
if (metricsConfigMap != null && metricsConfigMap.size() > 0) {
MetricsConfig metricsConfig = null;
for (MetricsConfig config : metricsConfigMap.values()) {
if (metricsConfig != null) {
throw new IllegalStateException("Duplicate metrics configs: " + metricsConfig + " and " + config);
}
metricsConfig = config;
}
if (metricsConfig != null) {
setMetrics(metricsConfig);
}
}
}ProtocolIds
if (StringUtils.isEmpty(getProtocolIds())) {
if (getProvider() != null && StringUtils.isNotEmpty(getProvider().getProtocolIds())) {
setProtocolIds(getProvider().getProtocolIds());
}
}ProtocolConfig
如果ServiceBean、ProviderConfig都没有ProtocolConfig信息，则通过id从spring容器添加，如果spring容器也没有对应的id，则加个默认的
if (CollectionUtils.isEmpty(getProtocols())
&& (getProvider() == null || CollectionUtils.isEmpty(getProvider().getProtocols()))) {
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>();
if (StringUtils.isNotEmpty(getProtocolIds())) {
Arrays.stream(COMMA_SPLIT_PATTERN.split(getProtocolIds()))
.forEach(id -> {
if (protocolConfigMap.containsKey(id)) {
protocolConfigs.add(protocolConfigMap.get(id));
}
});
}
// 如果还是空，把默认的加入到protocolConfigs
if (protocolConfigs.isEmpty()) {
for (ProtocolConfig config : protocolConfigMap.values()) {
if (StringUtils.isEmpty(protocolIds)) {
protocolConfigs.add(config);
}
}
}
if (!protocolConfigs.isEmpty()) {
super.setProtocols(protocolConfigs);
}
}
}path
设置path
if (StringUtils.isEmpty(getPath())) {
if (StringUtils.isNotEmpty(beanName)
&& StringUtils.isNotEmpty(getInterface())
&& beanName.startsWith(getInterface())) {
setPath(beanName);
}
}服务暴露export
supportedApplicationListener在setApplicationContext方法设置的，因为这个类还实现了ApplicationContextAware接口
if (!supportedApplicationListener) {
export();
}后面我们看看服务是怎么暴露的
java
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