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用户请求想要生产的流量打到原有服务的同时#xff0c;打到新开发的服务上试一下
注意的点#xff1a; 1 nginx是不读请求体的#xff0c;需要在配置文件中打开#xff0c;或者读取前调用ngx.req.read_body()#xff0c;然后通过local data ngx.r…应用场景
用户请求想要生产的流量打到原有服务的同时打到新开发的服务上试一下
注意的点 1 nginx是不读请求体的需要在配置文件中打开或者读取前调用ngx.req.read_body()然后通过local data ngx.req.get_body_data()获取 2 header转发时如果原请求里有accept-encoding这样支持压缩的声明返回的是二进制记录日志不方便读取要单独处理下
-- mirror.lua
local core require(apisix.core)
local http require(resty.http)
local json require(apisix.core.json)local plugin_name mirrorlocal schema {type object,properties {uri {type string,},serviceHost {type string,},serviceName {type string,},method {type string,enum {POST, GET},default POST},timeout {type number,default 3000},},
}local _M {version 0.1,priority 98,name plugin_name,schema schema,
}function _M.check_schema(conf)local ok, errok, err core.schema.check(schema, conf)if not ok thenreturn false, errendif not conf.serviceHost thenconf.serviceHost conf.serviceNameendif conf.timeout 0 thenconf.timeout 5 * 1000endreturn true
end-- timeout in ms
local function http_req(method, uri, body, myheaders, timeout)local httpc http.new()if timeout thenhttpc:set_timeout(timeout)endmyheaders[accept-encoding] nilcore.log.info(Mirrored request http uri , uri, method , method)core.log.info(Mirrored request http header , core.json.delay_encode(myheaders))core.log.info(Mirrored request http req param , core.json.delay_encode(body))local res, err httpc:request_uri(uri, {method method,body body,headers myheaders,ssl_verify false})core.log.info(Mirrored request http status , res.status)core.log.info(Mirrored request http body , res.body)return res
endfunction _M.access(conf, ctx)core.log.info(Mirrored request start )ngx.req.read_body()local data ngx.req.get_body_data()local req_headers ngx.req.get_headers()req_headers[Host] conf.servicHostcore.log.info(Mirrored request conf , core.json.delay_encode(conf))local method conf.methodif not method or method nil or method thenmethod ngx.req.get_method()endlocal url conf.serviceNameif not conf.uri or conf.uri nil or conf.uri thenurl url .. ngx.var.urielseurl url .. conf.uriendlocal args, err ngx.req.get_uri_args()if G thenlocal first truefor key, val in pairs(args) doif first thenurl url .. ?first falseelseurl url .. endurl url .. key .. .. valendendlocal res,err http_req(method, url, data, req_headers, conf.timeout)core.log.info(Mirrored request end)
endreturn _M
