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
|
# Copyright (c) 2013 eNovance
#
# 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.
"""Send notifications on request"""
import os.path
import sys
import traceback as tb
from oslo_config import cfg
import oslo_messaging
import six
import webob.dec
from pycadf._i18n import _
from pycadf.middleware import base
from pycadf.openstack.common import context
LOG = None
def log_and_ignore_error(fn):
def wrapped(*args, **kwargs):
try:
return fn(*args, **kwargs)
except Exception as e:
if LOG:
LOG.exception(_('An exception occurred processing '
'the API call: %s ') % e)
return wrapped
class RequestNotifier(base.Middleware):
"""Send notification on request."""
@classmethod
def factory(cls, global_conf, **local_conf):
"""Factory method for paste.deploy."""
conf = global_conf.copy()
conf.update(local_conf)
def _factory(app):
return cls(app, **conf)
return _factory
def __init__(self, app, **conf):
global LOG
proj = cfg.CONF.project
TRANSPORT_ALIASES = {}
if proj:
log_mod = '%s.openstack.common.log' % proj
if log_mod in sys.modules:
LOG = sys.modules[log_mod].getLogger(__name__)
# Aliases to support backward compatibility
TRANSPORT_ALIASES = {
'%s.openstack.common.rpc.impl_kombu' % proj: 'rabbit',
'%s.openstack.common.rpc.impl_qpid' % proj: 'qpid',
'%s.openstack.common.rpc.impl_zmq' % proj: 'zmq',
'%s.rpc.impl_kombu' % proj: 'rabbit',
'%s.rpc.impl_qpid' % proj: 'qpid',
'%s.rpc.impl_zmq' % proj: 'zmq',
}
self.service_name = conf.get('service_name')
self.ignore_req_list = [x.upper().strip() for x in
conf.get('ignore_req_list', '').split(',')]
self.notifier = oslo_messaging.Notifier(
oslo_messaging.get_transport(cfg.CONF, aliases=TRANSPORT_ALIASES),
os.path.basename(sys.argv[0]))
super(RequestNotifier, self).__init__(app)
@staticmethod
def environ_to_dict(environ):
"""Following PEP 333, server variables are lower case, so don't
include them.
"""
return dict((k, v) for k, v in six.iteritems(environ)
if k.isupper() and k != 'HTTP_X_AUTH_TOKEN')
@log_and_ignore_error
def process_request(self, request):
request.environ['HTTP_X_SERVICE_NAME'] = \
self.service_name or request.host
payload = {
'request': self.environ_to_dict(request.environ),
}
self.notifier.info(context.get_admin_context().to_dict(),
'http.request', payload)
@log_and_ignore_error
def process_response(self, request, response,
exception=None, traceback=None):
payload = {
'request': self.environ_to_dict(request.environ),
}
if response:
payload['response'] = {
'status': response.status,
'headers': response.headers,
}
if exception:
payload['exception'] = {
'value': repr(exception),
'traceback': tb.format_tb(traceback)
}
self.notifier.info(context.get_admin_context().to_dict(),
'http.response', payload)
@webob.dec.wsgify
def __call__(self, req):
if req.method in self.ignore_req_list:
return req.get_response(self.application)
else:
self.process_request(req)
try:
response = req.get_response(self.application)
except Exception:
exc_type, value, traceback = sys.exc_info()
self.process_response(req, None, value, traceback)
raise
else:
self.process_response(req, response)
return response
|
