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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙimport datetime import functools import logging import os import re from collections import namedtuple from typing import Any, Callable, Dict, Iterable, List, Tuple # noqa from .abc import AbstractAccessLogger from .web_request import BaseRequest from .web_response import StreamResponse KeyMethod = namedtuple("KeyMethod", "key method") class AccessLogger(AbstractAccessLogger): """Helper object to log access. Usage: log = logging.getLogger("spam") log_format = "%a %{User-Agent}i" access_logger = AccessLogger(log, log_format) access_logger.log(request, response, time) Format: %% The percent sign %a Remote IP-address (IP-address of proxy if using reverse proxy) %t Time when the request was started to process %P The process ID of the child that serviced the request %r First line of request %s Response status code %b Size of response in bytes, including HTTP headers %T Time taken to serve the request, in seconds %Tf Time taken to serve the request, in seconds with floating fraction in .06f format %D Time taken to serve the request, in microseconds %{FOO}i request.headers['FOO'] %{FOO}o response.headers['FOO'] %{FOO}e os.environ['FOO'] """ LOG_FORMAT_MAP = { "a": "remote_address", "t": "request_start_time", "P": "process_id", "r": "first_request_line", "s": "response_status", "b": "response_size", "T": "request_time", "Tf": "request_time_frac", "D": "request_time_micro", "i": "request_header", "o": "response_header", } LOG_FORMAT = '%a %t "%r" %s %b "%{Referer}i" "%{User-Agent}i"' FORMAT_RE = re.compile(r"%(\{([A-Za-z0-9\-_]+)\}([ioe])|[atPrsbOD]|Tf?)") CLEANUP_RE = re.compile(r"(%[^s])") _FORMAT_CACHE: Dict[str, Tuple[str, List[KeyMethod]]] = {} def __init__(self, logger: logging.Logger, log_format: str = LOG_FORMAT) -> None: """Initialise the logger. logger is a logger object to be used for logging. log_format is a string with apache compatible log format description. """ super().__init__(logger, log_format=log_format) _compiled_format = AccessLogger._FORMAT_CACHE.get(log_format) if not _compiled_format: _compiled_format = self.compile_format(log_format) AccessLogger._FORMAT_CACHE[log_format] = _compiled_format self._log_format, self._methods = _compiled_format def compile_format(self, log_format: str) -> Tuple[str, List[KeyMethod]]: """Translate log_format into form usable by modulo formatting All known atoms will be replaced with %s Also methods for formatting of those atoms will be added to _methods in appropriate order For example we have log_format = "%a %t" This format will be translated to "%s %s" Also contents of _methods will be [self._format_a, self._format_t] These method will be called and results will be passed to translated string format. Each _format_* method receive 'args' which is list of arguments given to self.log Exceptions are _format_e, _format_i and _format_o methods which also receive key name (by functools.partial) """ # list of (key, method) tuples, we don't use an OrderedDict as users # can repeat the same key more than once methods = list() for atom in self.FORMAT_RE.findall(log_format): if atom[1] == "": format_key1 = self.LOG_FORMAT_MAP[atom[0]] m = getattr(AccessLogger, "_format_%s" % atom[0]) key_method = KeyMethod(format_key1, m) else: format_key2 = (self.LOG_FORMAT_MAP[atom[2]], atom[1]) m = getattr(AccessLogger, "_format_%s" % atom[2]) key_method = KeyMethod(format_key2, functools.partial(m, atom[1])) methods.append(key_method) log_format = self.FORMAT_RE.sub(r"%s", log_format) log_format = self.CLEANUP_RE.sub(r"%\1", log_format) return log_format, methods @staticmethod def _format_i( key: str, request: BaseRequest, response: StreamResponse, time: float ) -> str: if request is None: return "(no headers)" # suboptimal, make istr(key) once return request.headers.get(key, "-") @staticmethod def _format_o( key: str, request: BaseRequest, response: StreamResponse, time: float ) -> str: # suboptimal, make istr(key) once return response.headers.get(key, "-") @staticmethod def _format_a(request: BaseRequest, response: StreamResponse, time: float) -> str: if request is None: return "-" ip = request.remote return ip if ip is not None else "-" @staticmethod def _format_t(request: BaseRequest, response: StreamResponse, time: float) -> str: now = datetime.datetime.utcnow() start_time = now - datetime.timedelta(seconds=time) return start_time.strftime("[%d/%b/%Y:%H:%M:%S +0000]") @staticmethod def _format_P(request: BaseRequest, response: StreamResponse, time: float) -> str: return "<%s>" % os.getpid() @staticmethod def _format_r(request: BaseRequest, response: StreamResponse, time: float) -> str: if request is None: return "-" return "{} {} HTTP/{}.{}".format( request.method, request.path_qs, request.version.major, request.version.minor, ) @staticmethod def _format_s(request: BaseRequest, response: StreamResponse, time: float) -> int: return response.status @staticmethod def _format_b(request: BaseRequest, response: StreamResponse, time: float) -> int: return response.body_length @staticmethod def _format_T(request: BaseRequest, response: StreamResponse, time: float) -> str: return str(round(time)) @staticmethod def _format_Tf(request: BaseRequest, response: StreamResponse, time: float) -> str: return "%06f" % time @staticmethod def _format_D(request: BaseRequest, response: StreamResponse, time: float) -> str: return str(round(time * 1000000)) def _format_line( self, request: BaseRequest, response: StreamResponse, time: float ) -> Iterable[Tuple[str, Callable[[BaseRequest, StreamResponse, float], str]]]: return [(key, method(request, response, time)) for key, method in self._methods] def log(self, request: BaseRequest, response: StreamResponse, time: float) -> None: try: fmt_info = self._format_line(request, response, time) values = list() extra = dict() for key, value in fmt_info: values.append(value) if key.__class__ is str: extra[key] = value else: k1, k2 = key # type: ignore[misc] dct = extra.get(k1, {}) # type: ignore[var-annotated,has-type] dct[k2] = value # type: ignore[index,has-type] extra[k1] = dct # type: ignore[has-type,assignment] self.logger.info(self._log_format % tuple(values), extra=extra) except Exception: self.logger.exception("Error in logging")