openresty ngx_lua执行阶段

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openresty ngx_lua执行阶段

       

                

                                

nginx http执行阶段

          

nginx http执行阶段

# ngx_http_core_module.h
typedef enum {
    NGX_HTTP_POST_READ_PHASE = 0,

    NGX_HTTP_SERVER_REWRITE_PHASE,

    NGX_HTTP_FIND_CONFIG_PHASE,
    NGX_HTTP_REWRITE_PHASE,
    NGX_HTTP_POST_REWRITE_PHASE,

    NGX_HTTP_PREACCESS_PHASE,

    NGX_HTTP_ACCESS_PHASE,
    NGX_HTTP_POST_ACCESS_PHASE,

    NGX_HTTP_PRECONTENT_PHASE,

    NGX_HTTP_CONTENT_PHASE,

    NGX_HTTP_LOG_PHASE
} ngx_http_phases;

          

执行阶段说明

NGX_HTTP_POST_READ_PHASE = 0,
* 接受并读取请求

NGX_HTTP_SERVER_REWRITE_PHASE,
* 修改url阶段，通常有重定向、变量设置

NGX_HTTP_FIND_CONFIG_PHASE,
* 查找url对应的配置，如匹配location

NGX_HTTP_REWRITE_PHASE,
* 匹配到location后，可能会再次进入NGX_HTTP_SERVER_REWRITE_PHASE

NGX_HTTP_POST_REWRITE_PHASE,
* 检查url是否执行过阶段4，如果执行了，再次进入阶段3
* 最大检查次数为10，超过会报错

NGX_HTTP_PREACCESS_PHASE,
* 请求资源限速等操作

NGX_HTTP_ACCESS_PHASE,
* 访问控制，如限制ip访问

NGX_HTTP_POST_ACCESS_PHASE,
* 验证NGX_HTTP_ACCESS_PHASE（访问控制）结果，如果通过则继续

NGX_HTTP_PRECONTENT_PHASE,
* try_files指令时生效

NGX_HTTP_CONTENT_PHASE,
* 处理http请求内容，一般需要与后端应用进行交互

NGX_HTTP_LOG_PHASE
* 日志输出

        

             

                                

ngx_lua 执行阶段