Simple sctp prometheus info exporter

sctp_exporter.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import re
import socketserver
import http.server
from http import HTTPStatus

regex = re.compile(r"^(\S+)\s*(\S+)$")

class Handler(http.server.SimpleHTTPRequestHandler):
    def parse_file(self, text):
        self.send_response(HTTPStatus.OK)
        self.end_headers()
        for line in text:
            result = regex.search(line).groups()
            self.wfile.write(b"# HELP SCTP metric from /proc/net/sctp/snmp ")
            self.wfile.write(result[0].encode())

            repl = r"([A-Z])([a-z0-9])"
            name = b"node_netstat" + re.sub(repl, r"_\1\2", result[0]).encode()
            self.wfile.write(b"\n# TYPE ")
            self.wfile.write(name)
            self.wfile.write(b" gauge\n")
            self.wfile.write(name + b" " + result[1].encode() + b"\n")

    def do_GET(self):
        try:
            infile = open("/proc/net/sctp/snmp")
            self.parse_file(infile.readlines())
            infile.close()
        except:
            self.send_response(HTTPStatus.INTERNAL_SERVER_ERROR)
            self.end_headers()
            self.wfile.write("File /proc/net/sctp/snmp not found")

socketserver.TCPServer.allow_reuse_address = True
httpd = socketserver.TCPServer(('', 9200), Handler)
httpd.serve_forever()