def _request(cls, url, post_data=None, timeout=REQUEST_TIMEOUT,
attempts=REQUEST_ATTEMPTS):
'''
request the given url and parse it as json
urllib2 raises errors on different status codes so use a try except
'''
# change fb__explicitly_shared to fb:explicitly_shared
if post_data:
post_data = dict(
(k.replace('__', ':'), v) for k, v in post_data.items())
logger.info('requesting url %s with post data %s', url, post_data)
post_request = (post_data is not None or 'method=post' in url)
if post_request and facebook_settings.FACEBOOK_READ_ONLY:
logger.info('running in readonly mode')
response = dict(id=123456789, setting_read_only=True)
return response
# nicely identify ourselves before sending the request
opener = urllib2.build_opener()
opener.addheaders = [('User-agent', 'Open Facebook Python')]
# get the statsd path to track response times with
path = urlparse(url).path
statsd_path = path.replace('.', '_')
# give it a few shots, connection is buggy at times
while attempts:
response_file = None
encoded_params = encode_params(post_data) if post_data else None
post_string = (urllib.urlencode(encoded_params)
if post_data else None)
try:
start_statsd('facebook.%s' % statsd_path)
try:
response_file = opener.open(
url, post_string, timeout=timeout)
response = response_file.read().decode('utf8')
except (urllib2.HTTPError,), e:
response_file = e
response = response_file.read().decode('utf8')
# Facebook sents error codes for many of their flows
# we still want the json to allow for proper handling
msg_format = 'FB request, error type %s, code %s'
logger.warn(msg_format, type(e), getattr(e, 'code', None))
# detect if its a server or application error
server_error = cls.is_server_error(e, response)
if server_error:
# trigger a retry
raise urllib2.URLError(
'Facebook is down %s' % response)
break
except (urllib2.HTTPError, urllib2.URLError, ssl.SSLError), e:
# These are often temporary errors, so we will retry before failing
error_format = 'Facebook encountered a timeout or error %s'
logger.warn(error_format, unicode(e))
attempts -= 1
if not attempts:
# if we have no more attempts actually raise the error
raise facebook_exceptions.convert_unreachable_exception(e)
def _request(cls,
url,
post_data=None,
timeout=REQUEST_TIMEOUT,
attempts=REQUEST_ATTEMPTS):
# change fb__explicitly_shared to fb:explicitly_shared
if post_data:
post_data = dict(
(k.replace('__', ':'), v) for k, v in post_data.items())
logger.info('requesting url %s with post data %s', url, post_data)
post_request = (post_data is not None or 'method=post' in url)
if post_request and facebook_settings.FACEBOOK_READ_ONLY:
logger.info('running in readonly mode')
response = dict(id=123456789, setting_read_only=True)
return response
# nicely identify ourselves before sending the request
opener = build_opener()
opener.addheaders = [('User-agent', 'Open Facebook Python')]
# get the statsd path to track response times with
path = urlparse(url).path
statsd_path = path.replace('.', '_')
# give it a few shots, connection is buggy at times
timeout_mp = 0
while attempts:
# gradually increase the timeout upon failure
timeout_mp += 1
extended_timeout = timeout * timeout_mp
response_file = None
encoded_params = encode_params(post_data) if post_data else None
post_string = (urlencode(encoded_params) if post_data else None)
try:
start_statsd('facebook.%s' % statsd_path)
try:
response_file = opener.open(url,
post_string,
timeout=extended_timeout)
response = response_file.read().decode('utf8')
except (HTTPError, ) as e:
response_file = e
response = response_file.read().decode('utf8')
# Facebook sents error codes for many of their flows
# we still want the json to allow for proper handling
msg_format = 'FB request, error type %s, code %s'
logger.warn(msg_format, type(e), getattr(e, 'code', None))
# detect if its a server or application error
server_error = cls.is_server_error(e, response)
if server_error:
# trigger a retry
raise URLError('Facebook is down %s' % response)
break
except (HTTPError, URLError, ssl.SSLError) as e:
# These are often temporary errors, so we will retry before
# failing
error_format = 'Facebook encountered a timeout (%ss) or error %s'
logger.warn(error_format, extended_timeout, str(e))
attempts -= 1
if not attempts:
# if we have no more attempts actually raise the error
error_instance = facebook_exceptions.convert_unreachable_exception(
e)
error_msg = 'Facebook request failed after several retries, raising error %s'
logger.warn(error_msg, error_instance)
raise error_instance
finally:
if response_file:
response_file.close()
stop_statsd('facebook.%s' % statsd_path)
# Faceboook response is either
# Valid json
# A string which is a querydict (a=b&c=d...etc)
# A html page stating FB is having trouble (but that shouldnt reach
# this part of the code)
try:
parsed_response = json.loads(response)
logger.info('facebook send response %s' % parsed_response)
except Exception as e:
# using exception because we need to support multiple json libs :S
parsed_response = QueryDict(response, True)
logger.info('facebook send response %s' % parsed_response)
if parsed_response and isinstance(parsed_response, dict):
# of course we have two different syntaxes
if parsed_response.get('error'):
cls.raise_error(parsed_response['error']['type'],
parsed_response['error']['message'],
parsed_response['error'].get('code'))
elif parsed_response.get('error_code'):
cls.raise_error(parsed_response['error_code'],
parsed_response['error_msg'])
return parsed_response
def _request(cls, url, post_data=None, timeout=REQUEST_TIMEOUT,
attempts=REQUEST_ATTEMPTS):
# change fb__explicitly_shared to fb:explicitly_shared
if post_data:
post_data = dict(
(k.replace('__', ':'), v) for k, v in post_data.items())
logger.info('requesting url %s with post data %s', url, post_data)
post_request = (post_data is not None or 'method=post' in url)
if post_request and facebook_settings.FACEBOOK_READ_ONLY:
logger.info('running in readonly mode')
response = dict(id=123456789, setting_read_only=True)
return response
# nicely identify ourselves before sending the request
opener = build_opener()
opener.addheaders = [('User-agent', 'Open Facebook Python')]
# get the statsd path to track response times with
path = urlparse(url).path
statsd_path = path.replace('.', '_')
# give it a few shots, connection is buggy at times
timeout_mp = 0
while attempts:
# gradually increase the timeout upon failure
timeout_mp += 1
extended_timeout = timeout * timeout_mp
response_file = None
encoded_params = encode_params(post_data) if post_data else None
post_string = (urlencode(encoded_params)
if post_data else None)
try:
start_statsd('facebook.%s' % statsd_path)
try:
response_file = opener.open(
url, post_string, timeout=extended_timeout)
response = response_file.read().decode('utf8')
except (HTTPError,) as e:
response_file = e
response = response_file.read().decode('utf8')
# Facebook sents error codes for many of their flows
# we still want the json to allow for proper handling
msg_format = 'FB request, error type %s, code %s'
logger.warn(msg_format, type(e), getattr(e, 'code', None))
# detect if its a server or application error
server_error = cls.is_server_error(e, response)
if server_error:
# trigger a retry
raise URLError(
'Facebook is down %s' % response)
break
except (HTTPError, URLError, ssl.SSLError) as e:
# These are often temporary errors, so we will retry before
# failing
error_format = 'Facebook encountered a timeout (%ss) or error %s'
logger.warn(error_format, extended_timeout, unicode(e))
attempts -= 1
if not attempts:
# if we have no more attempts actually raise the error
error_instance = facebook_exceptions.convert_unreachable_exception(
e)
error_msg = 'Facebook request failed after several retries, raising error %s'
logger.warn(error_msg, error_instance)
raise error_instance
finally:
if response_file:
response_file.close()
stop_statsd('facebook.%s' % statsd_path)
# Faceboook response is either
# Valid json
# A string which is a querydict (a=b&c=d...etc)
# A html page stating FB is having trouble (but that shouldnt reach
# this part of the code)
try:
parsed_response = json.loads(response)
logger.info('facebook send response %s' % parsed_response)
except Exception as e:
# using exception because we need to support multiple json libs :S
parsed_response = QueryDict(response, True)
logger.info('facebook send response %s' % parsed_response)
if parsed_response and isinstance(parsed_response, dict):
# of course we have two different syntaxes
if parsed_response.get('error'):
cls.raise_error(parsed_response['error']['type'],
parsed_response['error']['message'],
parsed_response['error'].get('code'))
elif parsed_response.get('error_code'):
cls.raise_error(parsed_response['error_code'],
parsed_response['error_msg'])
return parsed_response
def _request(cls,
url,
post_data=None,
timeout=REQUEST_TIMEOUT,
attempts=REQUEST_ATTEMPTS):
# change fb__explicitly_shared to fb:explicitly_shared
if post_data:
post_data = dict(
(k.replace('__', ':'), v) for k, v in post_data.items())
logger.info('requesting url %s with post data %s', url, post_data)
post_request = (post_data is not None or 'method=post' in url)
if post_request and facebook_settings.FACEBOOK_READ_ONLY:
logger.info('running in readonly mode')
response = dict(id=123456789, setting_read_only=True)
return response
# nicely identify ourselves before sending the request
opener = urllib2.build_opener()
opener.addheaders = [('User-agent', 'Open Facebook Python')]
# get the statsd path to track response times with
path = urlparse(url).path
statsd_path = path.replace('.', '_')
# give it a few shots, connection is buggy at times
timeout_mp = 0
while attempts:
# gradually increase the timeout upon failure
timeout_mp += 1
extended_timeout = timeout * timeout_mp
response_file = None
encoded_params = encode_params(post_data) if post_data else None
post_string = (urllib.urlencode(encoded_params)
if post_data else None)
try:
start_statsd('facebook.%s' % statsd_path)
try:
response_file = opener.open(url,
post_string,
timeout=extended_timeout)
response = response_file.read().decode('utf8')
except (urllib2.HTTPError, ), e:
response_file = e
response = response_file.read().decode('utf8')
# Facebook sents error codes for many of their flows
# we still want the json to allow for proper handling
msg_format = 'FB request, error type %s, code %s'
logger.warn(msg_format, type(e), getattr(e, 'code', None))
# detect if its a server or application error
server_error = cls.is_server_error(e, response)
if server_error:
# trigger a retry
raise urllib2.URLError('Facebook is down %s' %
response)
break
except (urllib2.HTTPError, urllib2.URLError, ssl.SSLError), e:
# These are often temporary errors, so we will retry before
# failing
error_format = 'Facebook encountered a timeout (%ss) or error %s'
logger.warn(error_format, extended_timeout, unicode(e))
attempts -= 1
if not attempts:
# if we have no more attempts actually raise the error
error_instance = facebook_exceptions.convert_unreachable_exception(
e)
error_msg = 'Facebook request failed after several retries, raising error %s'
logger.warn(error_msg, error_instance)
raise error_instance
