1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
# Copyright 2016 OpenMarket Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from synapse.util.logcontext import LoggingContext
from twisted.web.server import Site, Request
import contextlib
import logging
import re
import time
ACCESS_TOKEN_RE = re.compile(r'(\?.*access(_|%5[Ff])token=)[^&]*(.*)$')
class SynapseRequest(Request):
def __init__(self, site, *args, **kw):
Request.__init__(self, *args, **kw)
self.site = site
self.authenticated_entity = None
self.start_time = 0
def __repr__(self):
# We overwrite this so that we don't log ``access_token``
return '<%s at 0x%x method=%s uri=%s clientproto=%s site=%s>' % (
self.__class__.__name__,
id(self),
self.method,
self.get_redacted_uri(),
self.clientproto,
self.site.site_tag,
)
def get_redacted_uri(self):
return ACCESS_TOKEN_RE.sub(
r'\1<redacted>\3',
self.uri
)
def get_user_agent(self):
return self.requestHeaders.getRawHeaders("User-Agent", [None])[-1]
def started_processing(self):
self.site.access_logger.info(
"%s - %s - Received request: %s %s",
self.getClientIP(),
self.site.site_tag,
self.method,
self.get_redacted_uri()
)
self.start_time = int(time.time() * 1000)
def finished_processing(self):
try:
context = LoggingContext.current_context()
ru_utime, ru_stime = context.get_resource_usage()
db_txn_count = context.db_txn_count
db_txn_duration_ms = context.db_txn_duration_ms
db_sched_duration_ms = context.db_sched_duration_ms
except Exception:
ru_utime, ru_stime = (0, 0)
db_txn_count, db_txn_duration_ms = (0, 0)
self.site.access_logger.info(
"%s - %s - {%s}"
" Processed request: %dms (%dms, %dms) (%dms/%dms/%d)"
" %sB %s \"%s %s %s\" \"%s\"",
self.getClientIP(),
self.site.site_tag,
self.authenticated_entity,
int(time.time() * 1000) - self.start_time,
int(ru_utime * 1000),
int(ru_stime * 1000),
db_sched_duration_ms,
db_txn_duration_ms,
int(db_txn_count),
self.sentLength,
self.code,
self.method,
self.get_redacted_uri(),
self.clientproto,
self.get_user_agent(),
)
@contextlib.contextmanager
def processing(self):
self.started_processing()
yield
self.finished_processing()
class XForwardedForRequest(SynapseRequest):
def __init__(self, *args, **kw):
SynapseRequest.__init__(self, *args, **kw)
"""
Add a layer on top of another request that only uses the value of an
X-Forwarded-For header as the result of C{getClientIP}.
"""
def getClientIP(self):
"""
@return: The client address (the first address) in the value of the
I{X-Forwarded-For header}. If the header is not present, return
C{b"-"}.
"""
return self.requestHeaders.getRawHeaders(
b"x-forwarded-for", [b"-"])[0].split(b",")[0].strip()
class SynapseRequestFactory(object):
def __init__(self, site, x_forwarded_for):
self.site = site
self.x_forwarded_for = x_forwarded_for
def __call__(self, *args, **kwargs):
if self.x_forwarded_for:
return XForwardedForRequest(self.site, *args, **kwargs)
else:
return SynapseRequest(self.site, *args, **kwargs)
class SynapseSite(Site):
"""
Subclass of a twisted http Site that does access logging with python's
standard logging
"""
def __init__(self, logger_name, site_tag, config, resource, *args, **kwargs):
Site.__init__(self, resource, *args, **kwargs)
self.site_tag = site_tag
proxied = config.get("x_forwarded", False)
self.requestFactory = SynapseRequestFactory(self, proxied)
self.access_logger = logging.getLogger(logger_name)
def log(self, request):
pass
|
