初始化dataSource和ctxHolder

AbstractDataSource

step1

regist-success

init DynamicDataSourceContextHolderprivate static String current;public static List<String> dataSourceIds;

@Configuration@Import({DynamicDataSourceRegister.class})

GenericBeanDefinitionsetBeanClass(DynamicDataSource.class)

dataSource-init

initcustomDataSources

ImportBeanDefinitionRegistrar

EnvironmentAware

AbstractRoutingDataSource@Override\tprotected Object determineCurrentLookupKey() {\t\treturn DynamicDataSourceContextHolder.getDataSourceType();\t}

BeanDefinitionRegistryregisterBeanDefinition(GenericBeanDefinition)

initDefaultDataSource

step2.1

*根据LookupKey从resolvedDataSources中获取动态DataSource

DataSource

@override:setEnvironment

初始化DynamicDataSourceContextHolder并注册dataSourceBean

@override:registerBeanDefinitions

application.yml: custom.datasource

spring:  datasource:    driver-class-name: com.mysql.cj.jdbc.Driver    url: jdbc:mysql://{ip}:{port}/{dbname}?XXX=XXX    username: {username}    password: {password}    db-type: com.alibaba.druid.pool.DruidDataSourcecustom:  datasource:    names: data2    data2:      driver-class-name: com.mysql.cj.jdbc.Driver      url: jdbc:mysql://{ip}:{port}/{dbname}?XXX=XXX      username: {username}      password: {password}      db-type: com.alibaba.druid.pool.DruidDataSource      #####################################      validation-query: SELECT 1      time-between-eviction-runs-millis: XXXXX      min-evictable-idle-time-millis: XXXXX      maximum-pool-size: XXX    data3:      ...

application.yml: spring.datasource

step2

step2.2