com.baidu.disconf.client.addons.properties

Class ReloadingPropertyPlaceholderConfigurer

java.lang.Object

org.springframework.core.io.support.PropertiesLoaderSupport

org.springframework.beans.factory.config.PropertyResourceConfigurer

org.springframework.beans.factory.config.PlaceholderConfigurerSupport

org.springframework.beans.factory.config.PropertyPlaceholderConfigurer

com.baidu.disconf.client.addons.properties.DefaultPropertyPlaceholderConfigurer

com.baidu.disconf.client.addons.properties.ReloadingPropertyPlaceholderConfigurer

All Implemented Interfaces:

IReloadablePropertiesListener, org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanFactoryAware, org.springframework.beans.factory.BeanNameAware, org.springframework.beans.factory.config.BeanFactoryPostProcessor, org.springframework.beans.factory.DisposableBean, org.springframework.beans.factory.InitializingBean, org.springframework.context.ApplicationContextAware, org.springframework.core.Ordered, org.springframework.core.PriorityOrdered

public class ReloadingPropertyPlaceholderConfigurer
extends DefaultPropertyPlaceholderConfigurer
implements org.springframework.beans.factory.InitializingBean, org.springframework.beans.factory.DisposableBean, IReloadablePropertiesListener, org.springframework.context.ApplicationContextAware

具有 reloadable 的 property bean 扩展了 DefaultPropertyPlaceholderConfigurer 特性如下： 1. 启动时 监控 动态config，并维护它们与相应bean的关系 2. 当动态config变动时，此configurer会进行reload 3. reload 时会 compare config value, and set value for beans

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	ReloadingPropertyPlaceholderConfigurer.PlaceholderResolvingStringValueResolver

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.slf4j.Logger	logger

Fields inherited from class com.baidu.disconf.client.addons.properties.DefaultPropertyPlaceholderConfigurer

DEFAULT_DEFAULT_SEPARATOR

Fields inherited from class org.springframework.beans.factory.config.PropertyPlaceholderConfigurer

SYSTEM_PROPERTIES_MODE_FALLBACK, SYSTEM_PROPERTIES_MODE_NEVER, SYSTEM_PROPERTIES_MODE_OVERRIDE

Fields inherited from class org.springframework.beans.factory.config.PlaceholderConfigurerSupport

DEFAULT_PLACEHOLDER_PREFIX, DEFAULT_PLACEHOLDER_SUFFIX, DEFAULT_VALUE_SEPARATOR, ignoreUnresolvablePlaceholders, nullValue, valueSeparator

Fields inherited from class org.springframework.core.io.support.PropertiesLoaderSupport

localOverride, localProperties

Fields inherited from interface org.springframework.core.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary

Constructors

Constructor and Description
ReloadingPropertyPlaceholderConfigurer()

Method Summary

Methods

Modifier and Type	Method and Description
void	afterPropertiesSet() afterPropertiesSet 将自己 添加 property listener
void	destroy() destroy 删除 property listener
protected Properties	mergeProperties() merge property and record last merge
protected String	parseStringValue(String strVal, Properties props, Set visitedPlaceholders) 对于被标记为动态的，进行 构造 property dependency 非动态的，则由原来的spring进行处理
protected void	processProperties(org.springframework.beans.factory.config.ConfigurableListableBeanFactory beanFactoryToProcess, Properties props) copy & paste, just so we can insert our own visitor.
void	propertiesReloaded(PropertiesReloadedEvent event) 当配置更新时，被调用
void	setApplicationContext(org.springframework.context.ApplicationContext applicationContext)
void	setBeanFactory(org.springframework.beans.factory.BeanFactory beanFactory)
void	setBeanName(String beanName)
void	setPlaceholderPrefix(String placeholderPrefix)
void	setPlaceholderSuffix(String placeholderSuffix)
void	setProperties(Properties properties)
void	setPropertiesArray(Properties[] propertiesArray)

Methods inherited from class com.baidu.disconf.client.addons.properties.DefaultPropertyPlaceholderConfigurer

getDefault, getPlaceholder, resolvePlaceholder, setDefaultSeparator

Methods inherited from class org.springframework.beans.factory.config.PropertyPlaceholderConfigurer

resolvePlaceholder, resolveSystemProperty, setSearchSystemEnvironment, setSystemPropertiesMode, setSystemPropertiesModeName

Methods inherited from class org.springframework.beans.factory.config.PlaceholderConfigurerSupport

doProcessProperties, setIgnoreUnresolvablePlaceholders, setNullValue, setValueSeparator

Methods inherited from class org.springframework.beans.factory.config.PropertyResourceConfigurer

convertProperties, convertProperty, convertPropertyValue, getOrder, postProcessBeanFactory, setOrder

Methods inherited from class org.springframework.core.io.support.PropertiesLoaderSupport

loadProperties, setFileEncoding, setIgnoreResourceNotFound, setLocalOverride, setLocation, setLocations, setPropertiesPersister

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

logger

protected static final org.slf4j.Logger logger

Constructor Detail

ReloadingPropertyPlaceholderConfigurer

public ReloadingPropertyPlaceholderConfigurer()

Method Detail

parseStringValue

protected String parseStringValue(String strVal,
                      Properties props,
                      Set visitedPlaceholders)
                           throws org.springframework.beans.factory.BeanDefinitionStoreException

对于被标记为动态的，进行 构造 property dependency 非动态的，则由原来的spring进行处理

Overrides:

parseStringValue in class org.springframework.beans.factory.config.PropertyPlaceholderConfigurer

Parameters:

strVal -

props -

visitedPlaceholders -

Returns:

Throws:

org.springframework.beans.factory.BeanDefinitionStoreException

mergeProperties

protected Properties mergeProperties()
                              throws IOException

merge property and record last merge

Overrides:

mergeProperties in class org.springframework.core.io.support.PropertiesLoaderSupport

Returns:

Throws:

IOException

propertiesReloaded

public void propertiesReloaded(PropertiesReloadedEvent event)

当配置更新时，被调用

Specified by:

propertiesReloaded in interface IReloadablePropertiesListener

Parameters:

event -

processProperties

protected void processProperties(org.springframework.beans.factory.config.ConfigurableListableBeanFactory beanFactoryToProcess,
                     Properties props)
                          throws org.springframework.beans.BeansException

copy & paste, just so we can insert our own visitor. 启动时 进行配置的解析

Overrides:

processProperties in class org.springframework.beans.factory.config.PropertyPlaceholderConfigurer

Throws:

org.springframework.beans.BeansException

afterPropertiesSet

public void afterPropertiesSet()

afterPropertiesSet 将自己 添加 property listener

Specified by:

afterPropertiesSet in interface org.springframework.beans.factory.InitializingBean

destroy

public void destroy()
             throws Exception

destroy 删除 property listener

Specified by:

destroy in interface org.springframework.beans.factory.DisposableBean

Throws:

Exception

setApplicationContext

public void setApplicationContext(org.springframework.context.ApplicationContext applicationContext)
                           throws org.springframework.beans.BeansException

Specified by:

setApplicationContext in interface org.springframework.context.ApplicationContextAware

Throws:

org.springframework.beans.BeansException

setProperties

public void setProperties(Properties properties)

Overrides:

setProperties in class org.springframework.core.io.support.PropertiesLoaderSupport

setPropertiesArray

public void setPropertiesArray(Properties[] propertiesArray)

Overrides:

setPropertiesArray in class org.springframework.core.io.support.PropertiesLoaderSupport

setPlaceholderPrefix

public void setPlaceholderPrefix(String placeholderPrefix)

Overrides:

setPlaceholderPrefix in class org.springframework.beans.factory.config.PlaceholderConfigurerSupport

setPlaceholderSuffix

public void setPlaceholderSuffix(String placeholderSuffix)

Overrides:

setPlaceholderSuffix in class org.springframework.beans.factory.config.PlaceholderConfigurerSupport

setBeanName

public void setBeanName(String beanName)

Specified by:

setBeanName in interface org.springframework.beans.factory.BeanNameAware

Overrides:

setBeanName in class org.springframework.beans.factory.config.PlaceholderConfigurerSupport

setBeanFactory

public void setBeanFactory(org.springframework.beans.factory.BeanFactory beanFactory)

Specified by:

setBeanFactory in interface org.springframework.beans.factory.BeanFactoryAware

Overrides:

setBeanFactory in class org.springframework.beans.factory.config.PlaceholderConfigurerSupport