Source Code for Module flumotion.component.plugs.loggers

 1  # -*- Mode: Python -*- 
 2  # vi:si:et:sw=4:sts=4:ts=4 
 3  # 
 4  # Flumotion - a streaming media server 
 5  # Copyright (C) 2004,2005,2006,2007 Fluendo, S.L. (www.fluendo.com). 
 6  # All rights reserved. 
 7   
 8  # This file may be distributed and/or modified under the terms of 
 9  # the GNU General Public License version 2 as published by 
10  # the Free Software Foundation. 
11  # This file is distributed without any warranty; without even the implied 
12  # warranty of merchantability or fitness for a particular purpose. 
13  # See "LICENSE.GPL" in the source distribution for more information. 
14   
15  # Licensees having purchased or holding a valid Flumotion Advanced 
16  # Streaming Server license may use this file in accordance with the 
17  # Flumotion Advanced Streaming Server Commercial License Agreement. 
18  # See "LICENSE.Flumotion" in the source distribution for more information. 
19   
20  # Headers in this file shall remain intact. 
21   
22  import time 
23   
24  from flumotion.common import errors 
25  from flumotion.component.plugs import base 
26   
27  __version__ = "$Rev: 6125 $" 
28   
29   
30 -class Logger(base.ComponentPlug): 
31      """ 
32      Base class for logger implementations. Should be renamed to 
33      StreamLogger later... 
34      """ 
35 -    def event(self, type, args): 
36          """ 
37          Handle a log event. 
38   
39          This dispatches a particular event type such as "http_session_completed" 
40          to a method "event_http_session_completed". 
41   
42          Returns a Deferred (which will fire once the event handling has been 
43          completed), or None. 
44          """ 
45          handler = getattr(self, 'event_' + type, None) 
46          if handler: 
47              return handler(args) 
48   
49 -    def rotate(self): 
50          # do nothing by default 
51          pass 
52   
53 -def _http_session_completed_to_apache_log(args): 
54      # ident is something that should in theory come from identd but in 
55      # practice is never there 
56      ident = '-' 
57      date = time.strftime('%d/%b/%Y:%H:%M:%S +0000', args['time']) 
58   
59      return ("%s %s %s [%s] \"%s %s %s\" %d %d %s \"%s\" %d\n" 
60              % (args['ip'], ident, args['username'], date, 
61                 args['method'], args['uri'], args['clientproto'], 
62                 args['response'], args['bytes-sent'], args['referer'], 
63                 args['user-agent'], args['time-connected'])) 
64   
65 -class ApacheLogger(Logger): 
66      filename = None 
67      file = None 
68   
69 -    def start(self, component=None): 
70          self.filename = self.args['properties']['logfile'] 
71          try: 
72              self.file = open(self.filename, 'a') 
73          except IOError, data: 
74              raise errors.PropertiesError('could not open log file %s ' 
75                                           'for writing (%s)' 
76                                           % (self.filename, data[1])) 
77   
78 -    def stop(self, component=None): 
79          if self.file: 
80              self.file.close() 
81              self.file = None 
82   
83 -    def event_http_session_completed(self, args): 
84          self.file.write(_http_session_completed_to_apache_log(args)) 
85          self.file.flush() 
86   
87 -    def rotate(self): 
88          self.stop() 
89          self.start() 
90