使用WSGIServer修改静态文件

背景：公司水务项目要求提供一个以POST方法修改静态文件的接口，由于nginx已经关闭了对POST方法的支持，并且开启POST方法后也无法去修改静态文件，所以需要额外的一个api接口去修改，而python的WSGIServer正好适用

一、使nginx支持POST方法

1、下载nginx的tar包：http://nginx.org/download/nginx-1.15.9.tar.gz

2、解压tar包后，修改src/http/modules/ngx_http_static_module.c文件，将文件中的NGINX_HTTP_POST选项，注释，如下图：

3、为nginx添加nginx-upload-module模块：

模块下载地址：https://github.com/winshining/nginx-upload-module

直接git conle https://github.com/winshining/nginx-upload-module即可

4、然后编译并安装nginx即可，下面为Dockerfile内容：

FROM ubuntu
ADD nginx-1.15.9.tar.gz nginx-upload-module.tar.gz /opt/
RUN apt update 
  && apt -y install python3.7 python3-pip libpcre3 libpcre3-dev zlib1g-dev openssl libssl-dev make gcc 
  && cd /opt/nginx-1.15.9 
  && ./configure --with-debug --prefix=/opt/nginx --sbin-path=/usr/bin/nginx --add-module=../nginx-upload-module --with-http_ssl_module 
  && make 
  && make install 
  && mkdir /opt/nginx/conf/conf.d 
  && rm -rf /opt/nginx-1.15.9 /opt/nginx-upload-module 
  && ln -s /usr/bin/python3.7  /usr/bin/python 
  && apt -y autoclean
COPY nginx.conf /opt/nginx/conf/
COPY water.conf /opt/nginx/conf/conf.d/
ADD ["upload.py", "/opt/"]
ENV PYTHONPATH="/usr/local/lib/python3.6/dist-packages:$PYTHONPATH"
RUN pip3 install flup-py3 
EXPOSE 80 443
VOLUME /opt/openapi
CMD nginx && python /opt/upload.py

二、WSGIServer的脚本编写

1、编写upload.py脚本

#!/usr/bin/env python
# coding=utf-8

import os
from flup.server.fcgi import WSGIServer


def write_file(filename, file_body):
    if os.path.exists(filename):
        with open(filename, 'w+', encoding='utf-8') as f:
            f.write(file_body)


def get_environ(environ):
    rquest_method = environ["REQUEST_METHOD"]
    str1 = "rquest_method:" + rquest_method + "
"
    query_string = environ["QUERY_STRING"]
    str1 += ",query_string:" + query_string + "
"
    request_uri = environ["REQUEST_URI"]
    str1 += ", request_uri:" + request_uri + "
"
    remote_addr = environ["REMOTE_ADDR"]
    str1 += ",remote_addr:" + remote_addr + "
"
    remote_port = environ["REMOTE_PORT"]
    str1 += ",remote_port:" + remote_port + "
"

    request_body_size = int(environ.get('CONTENT_LENGTH', 0))
    body = environ['wsgi.input'].read(request_body_size)
    str_body = str(body, encoding="utf-8")
    str1 += ",body:" + str_body + "
"
    if len(str_body):
        file_uri = request_uri.replace('/upload', '/opt/openapi')
        write_file(file_uri, str_body)
    return str1


def webapp(environ, start_response):
    start_response('200 OK', [('Content-Type', 'text/plain')])
    str2 = get_environ(environ)
    content = str2
    return [content]


if __name__ == '__main__':
    WSGIServer(webapp, multithreaded=True, multiprocess=False, bindAddress=('127.0.0.1', 10080)).run()

2、配置nginx的配置文件：

server {
    listen       80;
    server_name  dev-water.wavewisdom-bj.com;
    access_log  /opt/nginx/logs/water_access.log;
    error_log /opt/nginx/logs/water_error.log;

    location / {
        root   /usr/share/nginx/html;
        index  index.html index.htm;
    }

    location /openapi {
          alias /opt/openapi;
        add_header Content-Type application/json; 
    }
    location /upload {
        include fastcgi_params;
        fastcgi_pass 127.0.0.1:10080;
    }

    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }
}

三、以上即为全部内容，然后进行post测试

1、post方法修改文件

 2、获取文件