def best_match_language(accept_language):
"""Determines best available locale from the Accept-Language header.
:returns: the best language match or None if the 'Accept-Language'
header was not available in the request.
"""
if not accept_language:
return None
all_languages = gettextutils.get_available_languages('ceilometer')
return accept_language.best_match(all_languages)
def best_match_language(accept_language):
"""Determines best available locale from the Accept-Language header.
:returns: the best language match or None if the 'Accept-Language'
header was not available in the request.
"""
if not accept_language:
return None
all_languages = gettextutils.get_available_languages('ceilometer')
return accept_language.best_match(all_languages)
def __call__(self, environ, start_response):
# Request for this state, modified by replace_start_response()
# and used when an error is being reported.
state = {}
def replacement_start_response(status, headers, exc_info=None):
"""Overrides the default response to make errors parsable.
"""
try:
status_code = int(status.split(" ")[0])
state["status_code"] = status_code
except (ValueError, TypeError): # pragma: nocover
raise Exception(("ErrorDocumentMiddleware received an invalid " "status %s" % status))
else:
if (state["status_code"] / 100) not in (2, 3):
# Remove some headers so we can replace them later
# when we have the full error message and can
# compute the length.
headers = [(h, v) for (h, v) in headers if h not in ("Content-Length", "Content-Type")]
# Save the headers in case we need to modify them.
state["headers"] = headers
return start_response(status, headers, exc_info)
app_iter = self.app(environ, replacement_start_response)
if (state["status_code"] / 100) not in (2, 3):
req = webob.Request(environ)
# Find the first TranslationHook in the array of hooks and use the
# translatable_error object from it
error = None
for hook in self.app.hooks:
if isinstance(hook, hooks.TranslationHook):
error = hook.local_error.translatable_error
break
user_locale = req.accept_language.best_match(
gettextutils.get_available_languages("ceilometer"), default_match="en_US"
)
if req.accept.best_match(["application/json", "application/xml"]) == "application/xml":
try:
# simple check xml is valid
fault = et.ElementTree.fromstring("\n".join(app_iter))
# Add the translated error to the xml data
if error is not None:
for fault_string in fault.findall("faultstring"):
fault_string.text = gettextutils.get_localized_message(error, user_locale)
body = [
et.ElementTree.tostring(
et.ElementTree.fromstring(
"<error_message>" + et.ElementTree.tostring(fault) + "</error_message>"
)
)
]
except ParseError as err:
LOG.error("Error parsing HTTP response: %s" % err)
body = ["<error_message>%s" % state["status_code"] + "</error_message>"]
state["headers"].append(("Content-Type", "application/xml"))
else:
try:
fault = json.loads("\n".join(app_iter))
if error is not None and "faultstring" in fault:
fault["faultstring"] = gettextutils.get_localized_message(error, user_locale)
body = [json.dumps({"error_message": json.dumps(fault)})]
except ValueError as err:
body = [json.dumps({"error_message": "\n".join(app_iter)})]
state["headers"].append(("Content-Type", "application/json"))
state["headers"].append(("Content-Length", len(body[0])))
else:
body = app_iter
return body
def __call__(self, environ, start_response):
# Request for this state, modified by replace_start_response()
# and used when an error is being reported.
state = {}
def replacement_start_response(status, headers, exc_info=None):
"""Overrides the default response to make errors parsable.
"""
try:
status_code = int(status.split(' ')[0])
state['status_code'] = status_code
except (ValueError, TypeError): # pragma: nocover
raise Exception((
'ErrorDocumentMiddleware received an invalid '
'status %s' % status
))
else:
if (state['status_code'] / 100) not in (2, 3):
# Remove some headers so we can replace them later
# when we have the full error message and can
# compute the length.
headers = [(h, v)
for (h, v) in headers
if h not in ('Content-Length', 'Content-Type')
]
# Save the headers in case we need to modify them.
state['headers'] = headers
return start_response(status, headers, exc_info)
app_iter = self.app(environ, replacement_start_response)
if (state['status_code'] / 100) not in (2, 3):
req = webob.Request(environ)
# Find the first TranslationHook in the array of hooks and use the
# translatable_error object from it
error = None
for hook in self.app.hooks:
if isinstance(hook, hooks.TranslationHook):
error = hook.local_error.translatable_error
break
user_locale = req.accept_language.best_match(
gettextutils.get_available_languages('ceilometer'),
default_match='en_US')
if (req.accept.best_match(['application/json', 'application/xml'])
== 'application/xml'):
try:
# simple check xml is valid
fault = et.ElementTree.fromstring('\n'.join(app_iter))
# Add the translated error to the xml data
if error is not None:
for fault_string in fault.findall('faultstring'):
fault_string.text = (
gettextutils.get_localized_message(
error, user_locale))
body = [et.ElementTree.tostring(
et.ElementTree.fromstring(
'<error_message>'
+ et.ElementTree.tostring(fault)
+ '</error_message>'))]
except ParseError as err:
LOG.error('Error parsing HTTP response: %s' % err)
body = ['<error_message>%s' % state['status_code']
+ '</error_message>']
state['headers'].append(('Content-Type', 'application/xml'))
else:
try:
fault = json.loads('\n'.join(app_iter))
if error is not None and 'faultstring' in fault:
fault['faultstring'] = (
gettextutils.get_localized_message(
error, user_locale))
body = [json.dumps({'error_message': json.dumps(fault)})]
except ValueError as err:
body = [json.dumps({'error_message': '\n'.join(app_iter)})]
state['headers'].append(('Content-Type', 'application/json'))
state['headers'].append(('Content-Length', len(body[0])))
else:
body = app_iter
return body
