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| 1 #!/usr/bin/env python3 |
| 2 |
| 3 import argparse |
| 4 import re |
| 5 import sys |
| 6 import threading |
| 7 import traceback |
| 8 |
| 9 from http.server import BaseHTTPRequestHandler, HTTPServer |
| 10 from string import Template |
| 11 |
| 12 # The token used for the headers passed by nginx is: http_ |
| 13 REGEX = r'\$http_\w+\b' |
| 14 DEFAULT_LOG = '$remote_addr - - [$time_local] "$request" $status $bytes_sent' |
| 15 _lock = threading.Lock() |
| 16 |
| 17 |
| 18 class Handler(BaseHTTPRequestHandler): |
| 19 def get_header_values(self): |
| 20 values = {} |
| 21 headers = re.findall(REGEX, self.format) |
| 22 for name in headers: |
| 23 new_var = name[6:].replace('_', '-') |
| 24 values[name[1:]] = self.headers.get(new_var, '-') |
| 25 return values |
| 26 |
| 27 def send_simple_response(self, status, response=None): |
| 28 self.send_response(status) |
| 29 self.end_headers() |
| 30 if response is None: |
| 31 response = bytes(self.responses[status][0], 'UTF-8') |
| 32 self.wfile.write(response) |
| 33 |
| 34 def write_info(self, args): |
| 35 message = Template(self.format).safe_substitute(args) + '\n' |
| 36 with _lock: |
| 37 self.output.write(message) |
| 38 self.output.flush() |
| 39 |
| 40 def do_POST(self): |
| 41 status = 200 |
| 42 content = bytes(self.response, 'UTF-8') |
| 43 values = { |
| 44 'remote_addr': self.address_string(), |
| 45 'time_local': self.log_date_time_string(), |
| 46 'request': self.requestline, |
| 47 'status': status, |
| 48 'bytes_sent': len(content), |
| 49 } |
| 50 values.update(self.get_header_values()) |
| 51 try: |
| 52 self.write_info(values) |
| 53 self.send_simple_response(status, content) |
| 54 except: |
| 55 traceback.print_exc(file=sys.stderr) |
| 56 self.send_simple_response(500) |
| 57 |
| 58 |
| 59 if __name__ == '__main__': |
| 60 parser = argparse.ArgumentParser() |
| 61 parser.add_argument('--port', action='store', |
| 62 default=8000, type=int, |
| 63 nargs='?', |
| 64 help='Port to use [default: 8000]') |
| 65 parser.add_argument('--response', action='store', |
| 66 type=str, nargs='?', default='OK', |
| 67 help='The response send to the client') |
| 68 parser.add_argument('--format', action='store', |
| 69 type=str, nargs='?', |
| 70 default=DEFAULT_LOG, |
| 71 help='Format of the log ouput') |
| 72 parser.add_argument('output', action='store', |
| 73 type=str, nargs='?', default='-', |
| 74 help='The file where the logs will be written') |
| 75 args = parser.parse_args() |
| 76 if args.output and args.output != '-': |
| 77 fh = open(args.output, 'a') |
| 78 else: |
| 79 fh = open(sys.stdout.fileno(), 'w', closefd=False) |
| 80 try: |
| 81 Handler.output = fh |
| 82 Handler.format = args.format |
| 83 Handler.response = args.response |
| 84 server_address = ('', args.port) |
| 85 httpd = HTTPServer(server_address, Handler) |
| 86 httpd.serve_forever() |
| 87 finally: |
| 88 fh.close() |
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