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rapid-httpserver

v0.1.3

Published

httpserver plugin of rapid

Downloads

19

Readme

rapid-httpserver

NPM version Dependency Status

Rapid-httpserver是由RapidJS提供的基础插件用来提供Http Server的服务能力

##Depends rapid-core : rapid 运行时支撑;

##概念 ###Extension 用来实现http的功能包装,如session, cookie, fileupload, form等,每个extension使用固定的一个接口型式,接收request与response,并返回一个处理包装对像。一般来说,extension的不包含业务功能只是扩展http行为能力的一种包装,所以使用方式相对简单没有复杂配置,所有配置接写在http.conf对像下即可,无独立配置.

###Filter 每个filter可作用于每个http访问的请求过程中,用来处理一些通用业务,如安全认证的过滤,日志打印,统计等任务,多个Filter采用链式调用,全部通过则执行最终的action,在执行过程中可以中断执行(如认证检查失失败等)。

###Action 每组Filter的未端使用一个Action,用来实现最终的业务功能。

##LifeCircle ###启动

  1. httpserver在被require时,将自动向rapid.plugin进行注册.
  2. httpserver在被require时,将进行rapid.config.watch("rapid-server"),用于发现自动配置的存在.
  3. 如果找到配置,根据autoStart=true的配置进行自动调用httpserver.start(),否则放弃启动.并等待手动执行httpserver.start(conf)方法.
  4. 当autoStart=false或未提供配置信息时,可利用httpserver.start(conf)启动server. (如果存在配置,这里将提供一个替换默认配置的机会,两次配置不会进行合并,而是完全进行覆盖).

###运行

  1. server启动后,直接监听配置端口(默认为8080),并开始接收请求.
  2. 在请求到达时,将根据配置依次通过fiterChain与actionChain两条执行链,每个请求根据配置的url会完整经过所有配置的filter链并到达action链,在actionChain的执行中,在任意配置的action被执行时,将停止继续执行下一个.如果所有都不配置,则执行defaultAction,默认返回404错误给客户端.
  3. 在处理请求的过程中,如果根据配置,需要处理请求的action或filter尚未载入(这种情况多发生在启动过程中,或受业务影响需要延迟提供的action与filter情况下.),系统将停止继续处理本次请求,并返回400或500错误.如果下次同样请求到来时,缺失的action与filter存在,则会正常派发处理.

Request流程

每个请求到达时,将根据配置依次通过fiterChain与actionChain两条执行链,每个请求根据配置(路由)的URL完整的经过fiterChain中配置的所有filter并到达actionChain,在actionChain的执行中,在任意配置的action被执行时,将停止继续执行下一个。如果所有都不配置,则执行defaultAction,默认返回404错误给客户端。

使用手册