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# (c) 2005 Ian Bicking and contributors; written for Paste (http://pythonpaste.org) # Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php """ Middleware for logging requests, using Apache combined log format """ import logging import time import urllib class TransLogger(object): """ This logging middleware will log all requests as they go through. They are, by default, sent to a logger named ``'wsgi'`` at the INFO level. If ``setup_console_handler`` is true, then messages for the named logger will be sent to the console. """ format = ('%(REMOTE_ADDR)s - %(REMOTE_USER)s [%(time)s] ' '"%(REQUEST_METHOD)s %(REQUEST_URI)s %(HTTP_VERSION)s" ' '%(status)s %(bytes)s "%(HTTP_REFERER)s" "%(HTTP_USER_AGENT)s"') def __init__(self, application, logger=None, format=None, logging_level=logging.INFO, logger_name='wsgi', setup_console_handler=True, set_logger_level=logging.DEBUG): if format is not None: self.format = format self.application = application self.logging_level = logging_level self.logger_name = logger_name if logger is None: self.logger = logging.getLogger(self.logger_name) if setup_console_handler: console = logging.StreamHandler() console.setLevel(logging.DEBUG) # We need to control the exact format: console.setFormatter(logging.Formatter('%(message)s')) self.logger.addHandler(console) self.logger.propagate = False if set_logger_level is not None: self.logger.setLevel(set_logger_level) else: self.logger = logger def __call__(self, environ, start_response): start = time.localtime() req_uri = urllib.quote(environ.get('SCRIPT_NAME', '') + environ.get('PATH_INFO', '')) if environ.get('QUERY_STRING'): req_uri += '?'+environ['QUERY_STRING'] method = environ['REQUEST_METHOD'] def replacement_start_response(status, headers, exc_info=None): # @@: Ideally we would count the bytes going by if no # content-length header was provided; but that does add # some overhead, so at least for now we'll be lazy. bytes = None for name, value in headers: if name.lower() == 'content-length': bytes = value self.write_log(environ, method, req_uri, start, status, bytes) return start_response(status, headers) return self.application(environ, replacement_start_response) def write_log(self, environ, method, req_uri, start, status, bytes): if bytes is None: bytes = '-' if time.daylight: offset = time.altzone / 60 / 60 * -100 else: offset = time.timezone / 60 / 60 * -100 if offset >= 0: offset = "+%0.4d" % (offset) elif offset < 0: offset = "%0.4d" % (offset) remote_addr = '-' if environ.get('HTTP_X_FORWARDED_FOR'): remote_addr = environ['HTTP_X_FORWARDED_FOR'] elif environ.get('REMOTE_ADDR'): remote_addr = environ['REMOTE_ADDR'] d = { 'REMOTE_ADDR': remote_addr, 'REMOTE_USER': environ.get('REMOTE_USER') or '-', 'REQUEST_METHOD': method, 'REQUEST_URI': req_uri, 'HTTP_VERSION': environ.get('SERVER_PROTOCOL'), 'time': time.strftime('%d/%b/%Y:%H:%M:%S ', start) + offset, 'status': status.split(None, 1)[0], 'bytes': bytes, 'HTTP_REFERER': environ.get('HTTP_REFERER', '-'), 'HTTP_USER_AGENT': environ.get('HTTP_USER_AGENT', '-'), } message = self.format % d self.logger.log(self.logging_level, message) def make_filter( app, global_conf, logger_name='wsgi', format=None, logging_level=logging.INFO, setup_console_handler=True, set_logger_level=logging.DEBUG): from paste.util.converters import asbool if isinstance(logging_level, basestring): logging_level = logging._levelNames[logging_level] if isinstance(set_logger_level, basestring): set_logger_level = logging._levelNames[set_logger_level] return TransLogger( app, format=format or None, logging_level=logging_level, logger_name=logger_name, setup_console_handler=asbool(setup_console_handler), set_logger_level=set_logger_level) make_filter.__doc__ = TransLogger.__doc__