Nginx 模拟服务端返回客户端接口响应

Nginx 模拟服务端返回客户端接口响应

场景：

我们服务器一般经常会有一些接口是需要对接第三方服务器，向第三方服务器发送请求，第三方响应后返回结果，往我们在测试过程中没有第三方的测试桩，无法得知消息接口是否发送成功，或根据不同的返回码，我们自己的业务会做出何种处理流程，所以需要一个测试桩来模拟第三方响应

工具：
Nginx

方法：
1、搭建好nginx服务，搭建方法不再详述，各项目都有在使用nginx
2、修改nginx的配置信息，在原有配置的基础上，增加一个测试使用的配置,样例见附件

test_upstreams.conf

## 1 
server {
    listen      8080;
    server_name *.minitor.tencent-cloud.net;
    access_log logs/$remote_addr-HttpCurveReportRpc.log main;
    default_type "application/json;charset=UTF-8";
    location /access_v1.http_service/HttpCurveReportRpc  {
	content_by_lua_block
	   {
--		ngx.exit(ngx.HTTP_BAD_REQUEST)
		ngx.say('{"pkg_seq":"0","retcode":"0","retmsg":"成功","lastagenttime":"0","lastcollectortime":"0"}')	
           }
	lua_need_request_body on;
        }
    }

## 2 
server {
    listen      80;
    default_type "application/json;charset=UTF-8";
    location /cgi-bin/cdn_monitor_report/out_monitor_report.cgi  {
        access_log logs/$remote_addr-out_monitor_report.log main;
	content_by_lua_block
           {
                ngx.say('{"errno":"0","error":"verygood"}')
           }
        lua_need_request_body on;
        }

## 3
    location /interface/settlement_report {
	access_log logs/$remote_addr-settlement_report.log main;
	content_by_lua_block
           {
                ngx.say('{"ret":"0","msg":""}')
           }
        lua_need_request_body on;
        }
    }

## 4 
server {
    listen      8081;
    default_type "application/json;charset=UTF-8";
    location /report/monitor-info  {
	access_log logs/$remote_addr-monitor-info.log main;
	content_by_lua_block
	   {
		ngx.say('{"code":"10000","message":"10000","success":"true","respTime":"1656038527545"}')
	   }
	lua_need_request_body on;
	}
    

    location /report/alarm-info {
	access_log logs/$remote_addr-alarm-info.log main;
	content_by_lua_block
           {
		ngx.say('{"code":"10000","message":"10000","success":"true","respTime":"1656038527545"}')
           }
        lua_need_request_body on;
        }
    }


## 5 
server {
    listen      8082;
    default_type "application/json;charset=UTF-8";
    location /omsnew/alarmlistsyn  {
        access_log logs/$remote_addr-alarmlistsyn.log main;
        content_by_lua_block
           {
                ngx.say('{"taskid":"12345678","resultCode":"2","resultDesc":"success1111"}')
           }
        lua_need_request_body on;
        }
}

vim /home/nginx/conf/nginx.conf

# worker_process :recommend to set the same number of the CPU cores
user root root;
worker_processes  1;
error_log  logs/error.log  notice;
pid sbin/nginx.pid;
#pcre_jit on;

events {
    #Modified according to the situation
    accept_mutex_delay  5ms;
    worker_connections  65530;
}

http {

  include       mime.types;
  ## MIME types
  default_type       application/octet-stream;

  ## Size Limits
  client_body_buffer_size     1m;
  client_header_buffer_size   16K;
  client_max_body_size          1m;
  client_body_in_single_buffer   on;
  proxy_buffers 16 64k;
  #large_client_header_buffers 1 1k;

  ## Timeouts
  keepalive_timeout     65;
  #keepalive_disable     msie6;
 
  sendfile                 on;

  ## TCP options
  #tcp_nodelay on;
  #tcp_nopush  on;

  ## Compression
  #gzip              on;
  #gzip_min_length   1024;
  #gzip_types text/css text/javascript application/xml text/json;
  #gzip_disable "MSIE [1-6]\.";

  ## Log Format
  #log_format  main    'request:$request|request_body:$request_body|time_is:$time_iso8601|remote_addr:$remote_addr|remote_user:$remote_user|response_time:$upstream_response_time|request_time:$request_time|browser_type:$http_user_agent|response_body:$resp_body';
  #log_format  access
  #'time=$time_local || remote_addr=$remote_addr || upstream_addr=$upstream_addr || upstream_status=$upstream_status || upstream_response_time=$upstream_response_time || Cache=$upstream_cache_status || body_bytes=$body_bytes_sent || request=$request  || status=$status ';
 
  #access_log  logs/access.log  access;
  #log_format main '$remote_addr - [$time_local] '
  #		  '[$request_body]';
  #log_format main escape=json '$time_iso8601 -- $remote_addr --  request_message: $request_body';
  log_format main escape=json '$fmt_localtime request_message: $request_body';
  #proxy_cache_path cache levels=2:2 keys_zone=mycache:300m inactive=12h max_size=30g;
  #proxy_buffers 16 64k;
  #proxy_set_header      X-Real-IP   $remote_addr;

  map $host $fmt_localtime {
        default '';
  }
  
  log_by_lua_block {
	ngx.var.fmt_localtime = ngx.localtime();
  }

  server {
        listen       8199;
        server_name  127.0.0.1;
        proxy_set_header Host $http_host;


        location / {
            root   html;
            index  index.html index.htm;
        }
        
#        location /status
#        {
#           access_log off;
#           iag_status on;
#           iag_status_local on;
#        }

#        location /iag
#        {
#            root html;
#        }

#################### config ####################
        #clean cache by hand
        #para is the name of cache zone
       # location = /querycache {
       #      proxy_cache_query  mycache;
       #  }
       #location = /delcache {
       #     proxy_cache_delete  mycache;
       # }

        # check the status of iag:the active numbers and so on
        location = /iag_stat
        {
            iag_stat on;            
        }

        # error pages
        error_page   500 502 503 504  /50x.html;
        location = /50x.html
        {
            root html;
        }
        #################### service ####################

    }
  include /home/nginx/conf/test_upstreams.conf;
}

在原 http框架中添加：
include /home/nginx/conf/test_upstreams.conf;

3、添加以上红框目录下文件

以接口为例，编辑配置文件 test_upstreams.conf

4、在客户端上添加域名对应的ip信息
由于是模拟客户端（也就是我们业务的服务器环境）向第三方域名发送请求，所以在hosts文件中添加域名与ip对应关系