def handle_object(self, env, start_response):
"""
Handles a possible static web request for an object. This object could
resolve into an index or listing request.
:param env: The original WSGI environment dict.
:param start_response: The original WSGI start_response hook.
"""
tmp_env = dict(env)
tmp_env['HTTP_USER_AGENT'] = \
'%s StaticWeb' % env.get('HTTP_USER_AGENT')
resp = self._app_call(tmp_env)
status_int = self._get_status_int()
if is_success(status_int) or is_redirection(status_int):
start_response(self._response_status, self._response_headers,
self._response_exc_info)
return resp
if status_int != HTTP_NOT_FOUND:
return self._error_response(resp, env, start_response)
self._get_container_info(env)
if not self._listings and not self._index:
return self.app(env, start_response)
status_int = HTTP_NOT_FOUND
if self._index:
tmp_env = dict(env)
tmp_env['HTTP_USER_AGENT'] = \
'%s StaticWeb' % env.get('HTTP_USER_AGENT')
if tmp_env['PATH_INFO'][-1] != '/':
tmp_env['PATH_INFO'] += '/'
tmp_env['PATH_INFO'] += self._index
resp = self._app_call(tmp_env)
status_int = self._get_status_int()
if is_success(status_int) or is_redirection(status_int):
if env['PATH_INFO'][-1] != '/':
resp = HTTPMovedPermanently(
location=env['PATH_INFO'] + '/')
self._log_response(env, resp.status_int)
return resp(env, start_response)
start_response(self._response_status, self._response_headers,
self._response_exc_info)
return resp
if status_int == HTTP_NOT_FOUND:
if env['PATH_INFO'][-1] != '/':
tmp_env = make_pre_authed_env(env, 'GET',
'/%s/%s/%s' % (self.version, self.account,
self.container),
self.agent)
tmp_env['QUERY_STRING'] = 'limit=1&format=json&delimiter' \
'=/&limit=1&prefix=%s' % quote(self.obj + '/')
resp = self._app_call(tmp_env)
body = ''.join(resp)
if not is_success(self._get_status_int()) or not body or \
not json.loads(body):
resp = HTTPNotFound()(env, self._start_response)
return self._error_response(resp, env, start_response)
resp = HTTPMovedPermanently(location=env['PATH_INFO'] +
'/')
self._log_response(env, resp.status_int)
return resp(env, start_response)
return self._listing(env, start_response, self.obj)
def handle_container(self, env, start_response):
"""
Handles a possible static web request for a container.
:param env: The original WSGI environment dict.
:param start_response: The original WSGI start_response hook.
"""
self._get_container_info(env)
if not self._listings and not self._index:
if config_true_value(env.get('HTTP_X_WEB_MODE', 'f')):
return HTTPNotFound()(env, start_response)
return self.app(env, start_response)
if not env['PATH_INFO'].endswith('/'):
resp = HTTPMovedPermanently(location=(env['PATH_INFO'] + '/'))
return resp(env, start_response)
if not self._index:
return self._listing(env, start_response)
tmp_env = dict(env)
tmp_env['HTTP_USER_AGENT'] = \
'%s StaticWeb' % env.get('HTTP_USER_AGENT')
tmp_env['swift.source'] = 'SW'
tmp_env['PATH_INFO'] += self._index
resp = self._app_call(tmp_env)
status_int = self._get_status_int()
if status_int == HTTP_NOT_FOUND:
return self._listing(env, start_response)
elif not is_success(self._get_status_int()) and \
not is_redirection(self._get_status_int()):
return self._error_response(resp, env, start_response)
start_response(self._response_status, self._response_headers,
self._response_exc_info)
return resp
def _redirect_to_shard(self, req, broker, obj_name):
"""
If the request indicates that it can accept a redirection, look for a
shard range that contains ``obj_name`` and if one exists return a
HTTPMovedPermanently response.
:param req: an instance of :class:`~swift.common.swob.Request`
:param broker: a container broker
:param obj_name: an object name
:return: an instance of :class:`swift.common.swob.HTTPMovedPermanently`
if a shard range exists for the given ``obj_name``, otherwise None.
"""
if not config_true_value(
req.headers.get('x-backend-accept-redirect', False)):
return None
shard_ranges = broker.get_shard_ranges(includes=obj_name,
states=SHARD_UPDATE_STATES)
if not shard_ranges:
return None
# note: obj_name may be included in both a created sub-shard and its
# sharding parent. get_shard_ranges will return the created sub-shard
# in preference to the parent, which is the desired result.
containing_range = shard_ranges[0]
location = "/%s/%s" % (containing_range.name, obj_name)
headers = {
'Location': location,
'X-Backend-Redirect-Timestamp': containing_range.timestamp.internal
}
# we do not want the host added to the location
req.environ['swift.leave_relative_location'] = True
return HTTPMovedPermanently(headers=headers, request=req)
def _redirect_with_slash(self, env_, start_response):
env = {}
env.update(env_)
if self.url_scheme:
env['wsgi.url_scheme'] = self.url_scheme
if self.url_host:
env['HTTP_HOST'] = self.url_host
resp = HTTPMovedPermanently(location=(env['PATH_INFO'] + '/'))
return resp(env, start_response)
def _redirect_to_shard(self, req, broker, obj_name):
"""
If the request indicates that it can accept a redirection, look for a
shard range that contains ``obj_name`` and if one exists return a
HTTPMovedPermanently response.
:param req: an instance of :class:`~swift.common.swob.Request`
:param broker: a container broker
:param obj_name: an object name
:return: an instance of :class:`swift.common.swob.HTTPMovedPermanently`
if a shard range exists for the given ``obj_name``, otherwise None.
"""
if not config_true_value(
req.headers.get('x-backend-accept-redirect', False)):
# We want to avoid fetching shard ranges for the (more
# time-sensitive) object-server update, so allow some misplaced
# objects to land between when we've started sharding and when the
# proxy learns about it. Note that this path is also used by old,
# pre-sharding updaters during a rolling upgrade.
return None
shard_ranges = broker.get_shard_ranges(includes=obj_name,
states=SHARD_UPDATE_STATES)
if not shard_ranges:
return None
# note: obj_name may be included in both a created sub-shard and its
# sharding parent. get_shard_ranges will return the created sub-shard
# in preference to the parent, which is the desired result.
containing_range = shard_ranges[0]
location = "/%s/%s" % (containing_range.name, obj_name)
if location != quote(location) and not config_true_value(
req.headers.get('x-backend-accept-quoted-location', False)):
# Sender expects the destination to be unquoted, but it isn't safe
# to send unquoted. Eat the update for now and let the sharder
# move it later. Should only come up during rolling upgrades.
return None
headers = {
'Location': quote(location),
'X-Backend-Location-Is-Quoted': 'true',
'X-Backend-Redirect-Timestamp': containing_range.timestamp.internal
}
# we do not want the host added to the location
req.environ['swift.leave_relative_location'] = True
return HTTPMovedPermanently(headers=headers, request=req)
def handle_object(self, env, start_response):
"""
Handles a possible static web request for an object. This object could
resolve into an index or listing request.
:param env: The original WSGI environment dict.
:param start_response: The original WSGI start_response hook.
"""
tmp_env = dict(env)
tmp_env['HTTP_USER_AGENT'] = \
'%s StaticWeb' % env.get('HTTP_USER_AGENT')
tmp_env['swift.source'] = 'SW'
resp = self._app_call(tmp_env)
status_int = self._get_status_int()
self._get_container_info(env)
if is_success(status_int) or is_redirection(status_int):
# Treat directory marker objects as not found
if not self._dir_type:
self._dir_type = 'application/directory'
content_length = self._response_header_value('content-length')
content_length = int(content_length) if content_length else 0
if self._response_header_value('content-type') == self._dir_type \
and content_length <= 1:
status_int = HTTP_NOT_FOUND
else:
start_response(self._response_status, self._response_headers,
self._response_exc_info)
return resp
if status_int != HTTP_NOT_FOUND:
# Retaining the previous code's behavior of not using custom error
# pages for non-404 errors.
self._error = None
return self._error_response(resp, env, start_response)
if not self._listings and not self._index:
start_response(self._response_status, self._response_headers,
self._response_exc_info)
return resp
status_int = HTTP_NOT_FOUND
if self._index:
tmp_env = dict(env)
tmp_env['HTTP_USER_AGENT'] = \
'%s StaticWeb' % env.get('HTTP_USER_AGENT')
tmp_env['swift.source'] = 'SW'
if not tmp_env['PATH_INFO'].endswith('/'):
tmp_env['PATH_INFO'] += '/'
tmp_env['PATH_INFO'] += self._index
resp = self._app_call(tmp_env)
status_int = self._get_status_int()
if is_success(status_int) or is_redirection(status_int):
if not env['PATH_INFO'].endswith('/'):
resp = HTTPMovedPermanently(location=env['PATH_INFO'] +
'/')
return resp(env, start_response)
start_response(self._response_status, self._response_headers,
self._response_exc_info)
return resp
if status_int == HTTP_NOT_FOUND:
if not env['PATH_INFO'].endswith('/'):
tmp_env = make_env(
env,
'GET',
'/%s/%s/%s' % (self.version, self.account, self.container),
self.agent,
swift_source='SW')
tmp_env['QUERY_STRING'] = 'limit=1&format=json&delimiter' \
'=/&limit=1&prefix=%s' % quote(self.obj + '/')
resp = self._app_call(tmp_env)
body = ''.join(resp)
if not is_success(self._get_status_int()) or not body or \
not json.loads(body):
resp = HTTPNotFound()(env, self._start_response)
return self._error_response(resp, env, start_response)
resp = HTTPMovedPermanently(location=env['PATH_INFO'] + '/')
return resp(env, start_response)
return self._listing(env, start_response, self.obj)
def __call__(self, env, start_response):
loc = env['PATH_INFO'] + '/'
return HTTPMovedPermanently(location=loc)(env, start_response)
