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#
# Copyright (C) 2010-2013 Vinay Sajip. See LICENSE.txt for details.
#
import logging
class HTTPHandler(logging.Handler):
"""
A class which sends records to a Web server, using either GET or
POST semantics.
:param host: The Web server to connect to.
:param url: The URL to use for the connection.
:param method: The HTTP method to use. GET and POST are supported.
:param secure: set to True if HTTPS is to be used.
:param credentials: Set to a username/password tuple if desired. If
set, a Basic authentication header is sent. WARNING:
if using credentials, make sure `secure` is `True`
to avoid sending usernames and passwords in
cleartext over the wire.
"""
def __init__(self, host, url, method="GET", secure=False, credentials=None):
"""
Initialize an instance.
"""
logging.Handler.__init__(self)
method = method.upper()
if method not in ["GET", "POST"]:
raise ValueError("method must be GET or POST")
self.host = host
self.url = url
self.method = method
self.secure = secure
self.credentials = credentials
def mapLogRecord(self, record):
"""
Default implementation of mapping the log record into a dict
that is sent as the CGI data. Overwrite in your class.
Contributed by Franz Glasner.
:param record: The record to be mapped.
"""
return record.__dict__
def emit(self, record):
"""
Emit a record.
Send the record to the Web server as a percent-encoded dictionary
:param record: The record to be emitted.
"""
try:
import http.client, urllib.parse
host = self.host
if self.secure:
h = http.client.HTTPSConnection(host)
else:
h = http.client.HTTPConnection(host)
url = self.url
data = urllib.parse.urlencode(self.mapLogRecord(record))
if self.method == "GET":
if (url.find('?') >= 0):
sep = '&'
else:
sep = '?'
url = url + "%c%s" % (sep, data)
h.putrequest(self.method, url)
# support multiple hosts on one IP address...
# need to strip optional :port from host, if present
i = host.find(":")
if i >= 0:
host = host[:i]
h.putheader("Host", host)
if self.method == "POST":
h.putheader("Content-type",
"application/x-www-form-urlencoded")
h.putheader("Content-length", str(len(data)))
if self.credentials:
import base64
s = ('u%s:%s' % self.credentials).encode('utf-8')
s = 'Basic ' + base64.b64encode(s).strip()
h.putheader('Authorization', s)
h.endheaders(data if self.method == "POST" else None)
h.getresponse() #can't do anything with the result
except (KeyboardInterrupt, SystemExit):
raise
except:
self.handleError(record)
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