def handle(self, cid, url_match, channel_item, wsgi_environ, raw_request, worker_store, simple_io_config, post_data,
path_info, soap_action, channel_type=CHANNEL.HTTP_SOAP, _response_404=response_404):
""" Create a new instance of a service and invoke it.
"""
service, is_active = self.server.service_store.new_instance(channel_item.service_impl_name)
if not is_active:
logger.warn('Could not invoke an inactive service:`%s`, cid:`%s`', service.get_name(), cid)
raise NotFound(cid, _response_404.format(cid, path_info, soap_action))
if channel_item.merge_url_params_req:
channel_params = self.create_channel_params(url_match, channel_item,
wsgi_environ, raw_request, post_data)
else:
channel_params = None
# If caching is configured for this channel, we need to first check if there is no response already
if channel_item['cache_type']:
cache_key, response = self.get_response_from_cache(service, raw_request, channel_item, channel_params, wsgi_environ)
if response:
return response
# No cache for this channel or no cached response, invoke the service then.
response = service.update_handle(self._set_response_data, service, raw_request,
channel_type, channel_item.data_format, channel_item.transport, self.server, worker_store.broker_client,
worker_store, cid, simple_io_config, wsgi_environ=wsgi_environ,
url_match=url_match, channel_item=channel_item, channel_params=channel_params,
merge_channel_params=channel_item.merge_url_params_req,
params_priority=channel_item.params_pri)
# Cache the response if needed (cache_key was already created on return from get_response_from_cache)
if channel_item['cache_type']:
self.set_response_in_cache(channel_item, cache_key, response)
# Having used the cache or not, we can return the response now
return response
def validate_input(self):
if not asbool(self.server.fs_server_config.apispec.pub_enabled):
# Note that we are using the same format that regular 404 does
raise NotFound(
self.cid, '[{}] Unknown URL:[{}] or SOAP action:[]'.format(
self.cid,
self.wsgi_environ['zato.channel_item']['url_path']))
def init(self, cid, path_info, request, headers, transport, data_format):
if transport == 'soap':
# HTTP headers are all uppercased at this point.
soap_action = headers.get('HTTP_SOAPACTION')
if not soap_action:
raise BadRequest(cid,
'Client did not send the SOAPAction header')
# SOAP clients may send an empty header, i.e. SOAPAction: "",
# as opposed to not sending the header at all.
soap_action = soap_action.lstrip('"').rstrip('"')
if not soap_action:
raise BadRequest(cid, 'Client sent an empty SOAPAction header')
else:
soap_action = ''
_soap_actions = self.http_soap.getall(path_info)
for _soap_action_info in _soap_actions:
# TODO: Remove the call to .keys() when this pull request is merged in
# https://github.com/dsc/bunch/pull/4
if soap_action in _soap_action_info.keys():
service_info = _soap_action_info[soap_action]
break
else:
msg = '[{0}] Could not find the service config for URL:[{1}], SOAP action:[{2}]'.format(
cid, path_info, soap_action)
logger.warn(msg)
raise NotFound(cid, msg)
logger.debug('[{0}] impl_name:[{1}]'.format(cid,
service_info.impl_name))
if (logger.isEnabledFor(TRACE1)):
buff = StringIO()
pprint(self.server.service_store.services, stream=buff)
logger.log(
TRACE1, '[{0}] service_store.services:[{1}]'.format(
cid, buff.getvalue()))
buff.close()
self.server.service_store.service_data(
service_info.impl_name
) # TODO - check if this call is needed at all?
return service_info
def handle(self,
cid,
url_match,
channel_item,
wsgi_environ,
raw_request,
worker_store,
simple_io_config,
post_data,
path_info,
soap_action,
channel_type=CHANNEL.HTTP_SOAP,
_response_404=response_404):
""" Create a new instance of a service and invoke it.
"""
service, is_active = self.server.service_store.new_instance(
channel_item.service_impl_name)
if not is_active:
logger.warn('Could not invoke an inactive service:`%s`, cid:`%s`',
service.get_name(), cid)
raise NotFound(cid,
_response_404.format(cid, path_info, soap_action))
if channel_item.merge_url_params_req:
channel_params = self.create_channel_params(
url_match, channel_item, wsgi_environ, raw_request, post_data)
else:
channel_params = None
response = service.update_handle(
self._set_response_data,
service,
raw_request,
channel_type,
channel_item.data_format,
channel_item.transport,
self.server,
worker_store.broker_client,
worker_store,
cid,
simple_io_config,
wsgi_environ=wsgi_environ,
url_match=url_match,
channel_item=channel_item,
channel_params=channel_params,
merge_channel_params=channel_item.merge_url_params_req,
params_priority=channel_item.params_pri)
return response
def dispatch(self, cid, req_timestamp, wsgi_environ, worker_store, _status_response=status_response,
no_url_match=(None, False), _response_404=response_404, _has_debug=_has_debug,
_http_soap_action='HTTP_SOAPACTION', _stringio=StringIO, _gzipfile=GzipFile):
""" Base method for dispatching incoming HTTP/SOAP messages. If the security
configuration is one of the technical account or HTTP basic auth,
the security validation is being performed. Otherwise, that step
is postponed until a concrete transport-specific handler is invoked.
"""
# Needed in later steps
path_info = wsgi_environ['PATH_INFO'].decode('utf-8')
if _http_soap_action in wsgi_environ:
soap_action = self._handle_quotes_soap_action(wsgi_environ[_http_soap_action])
else:
soap_action = ''
# Can we recognize this combination of URL path and SOAP action at all?
# This gives us the URL info and security data - but note that here
# we still haven't validated credentials, only matched the URL.
# Credentials are checked in a call to self.url_data.check_security
url_match, channel_item = self.url_data.match(path_info, soap_action, bool(soap_action))
if _has_debug and channel_item:
logger.debug('url_match:`%r`, channel_item:`%r`', url_match, sorted(channel_item.items()))
# This is needed in parallel.py's on_wsgi_request
wsgi_environ['zato.channel_item'] = channel_item
payload = wsgi_environ['wsgi.input'].read()
# OK, we can possibly handle it
if url_match not in no_url_match:
try:
# Raise 404 if the channel is inactive
if not channel_item['is_active']:
logger.warn('url_data:`%s` is not active, raising NotFound', sorted(url_match.items()))
raise NotFound(cid, 'Channel inactive')
expected_method = channel_item['method']
if expected_method:
actual_method = wsgi_environ['REQUEST_METHOD']
if expected_method != actual_method:
logger.warn(
'Expected `%s` instead of `%s` for `%s`', expected_method, actual_method, channel_item['url_path'])
raise MethodNotAllowed(cid, 'Method `{}` is not allowed here'.format(actual_method))
# Need to read security info here so we know if POST needs to be
# parsed. If so, we do it here and reuse it in other places
# so it doesn't have to be parsed two or more times.
post_data = {}
sec = self.url_data.url_sec[channel_item['match_target']]
if sec.sec_def != ZATO_NONE or sec.sec_use_rbac is True:
if sec.sec_def != ZATO_NONE:
if sec.sec_def.sec_type == SEC_DEF_TYPE.OAUTH:
post_data.update(QueryDict(payload, encoding='utf-8'))
# Eagerly parse the request but only if we expect XPath-based credentials. The request will be re-used
# in later steps, it won't be parsed twice or more.
elif sec.sec_def.sec_type == SEC_DEF_TYPE.XPATH_SEC:
wsgi_environ['zato.request.payload'] = payload_from_request(
cid, payload, channel_item.data_format, channel_item.transport)
# Will raise an exception on any security violation
self.url_data.check_security(
sec, cid, channel_item, path_info, payload, wsgi_environ, post_data, worker_store)
# This is handy if someone invoked URLData's OAuth API manually
wsgi_environ['zato.oauth.post_data'] = post_data
# OK, no security exception at that point means we can finally invoke the service.
response = self.request_handler.handle(cid, url_match, channel_item, wsgi_environ,
payload, worker_store, self.simple_io_config, post_data, path_info, soap_action)
wsgi_environ['zato.http.response.headers']['Content-Type'] = response.content_type
wsgi_environ['zato.http.response.headers'].update(response.headers)
wsgi_environ['zato.http.response.status'] = _status_response[response.status_code]
if channel_item['content_encoding'] == 'gzip':
s = _stringio()
with _gzipfile(fileobj=s, mode='w') as f:
f.write(response.payload)
response.payload = s.getvalue()
s.close()
wsgi_environ['zato.http.response.headers']['Content-Encoding'] = 'gzip'
# Finally return payload to the client
return response.payload
except Exception, e:
_format_exc = format_exc(e)
status = _status_internal_server_error
if isinstance(e, ClientHTTPError):
response = e.msg
status_code = e.status
# TODO: Refactor this series of if/else's into a lookup dict.
if isinstance(e, Unauthorized):
status = _status_unauthorized
wsgi_environ['zato.http.response.headers']['WWW-Authenticate'] = e.challenge
elif isinstance(e, BadRequest):
status = _status_bad_request
elif isinstance(e, NotFound):
status = _status_not_found
elif isinstance(e, MethodNotAllowed):
status = _status_method_not_allowed
elif isinstance(e, Forbidden):
status = _status_forbidden
elif isinstance(e, TooManyRequests):
status = _status_too_many_requests
else:
status_code = INTERNAL_SERVER_ERROR
response = _format_exc if self.return_tracebacks else self.default_error_message
# TODO: This should be configurable. Some people may want such
# things to be on DEBUG whereas for others ERROR will make most sense
# in given circumstances.
logger.error('Caught an exception, cid:`%s`, status_code:`%s`, _format_exc:`%s`', cid, status_code, _format_exc)
try:
error_wrapper = get_client_error_wrapper(channel_item['transport'], channel_item['data_format'])
except KeyError:
# It's OK. Apparently it's neither 'soap' nor json'
if logger.isEnabledFor(TRACE1):
msg = 'No client error wrapper for transport:`{}`, data_format:`{}`'.format(
channel_item.get('transport'), channel_item.get('data_format'))
logger.log(TRACE1, msg)
else:
response = error_wrapper(cid, response)
wsgi_environ['zato.http.response.status'] = status
return response
def dispatch(self,
cid,
req_timestamp,
wsgi_environ,
worker_store,
_status_response=status_response,
no_url_match=(None, False),
_response_404=response_404,
_has_debug=_has_debug,
_http_soap_action='HTTP_SOAPACTION',
_stringio=StringIO,
_gzipfile=GzipFile,
_accept_any_http=accept_any_http,
_accept_any_internal=accept_any_internal,
_rate_limit_type=RATE_LIMIT.OBJECT_TYPE.HTTP_SOAP,
_stack_format=stack_format,
_exc_sep='*' * 80):
# Needed as one of the first steps
http_method = wsgi_environ['REQUEST_METHOD']
http_method = http_method if isinstance(
http_method, unicode) else http_method.decode('utf8')
http_accept = wsgi_environ.get('HTTP_ACCEPT') or _accept_any_http
http_accept = http_accept.replace('*', _accept_any_internal).replace(
'/', 'HTTP_SEP')
http_accept = http_accept if isinstance(
http_accept, unicode) else http_accept.decode('utf8')
# Needed in later steps
path_info = wsgi_environ['PATH_INFO'] if PY3 else wsgi_environ[
'PATH_INFO'].decode('utf8')
# Immediately reject the request if it is not a support HTTP method, no matter what channel
# it would have otherwise matched.
if http_method not in self.http_methods_allowed:
wsgi_environ[
'zato.http.response.status'] = _status_method_not_allowed
return client_json_error(cid, 'Unsupported HTTP method')
if _http_soap_action in wsgi_environ:
soap_action = self._handle_quotes_soap_action(
wsgi_environ[_http_soap_action])
else:
soap_action = ''
# Can we recognize this combination of URL path and SOAP action at all?
# This gives us the URL info and security data - but note that here
# we still haven't validated credentials, only matched the URL.
# Credentials are checked in a call to self.url_data.check_security
url_match, channel_item = self.url_data.match(path_info, soap_action,
http_method, http_accept,
bool(soap_action))
if _has_debug and channel_item:
logger.debug('url_match:`%r`, channel_item:`%r`', url_match,
sorted(channel_item.items()))
# This is needed in parallel.py's on_wsgi_request
wsgi_environ['zato.channel_item'] = channel_item
payload = wsgi_environ['wsgi.input'].read()
# OK, we can possibly handle it
if url_match not in no_url_match:
try:
# Raise 404 if the channel is inactive
if not channel_item['is_active']:
logger.warn(
'url_data:`%s` is not active, raising NotFound',
sorted(url_match.items()))
raise NotFound(cid, 'Channel inactive')
# We need to read security info here so we know if POST needs to be
# parsed. If so, we do it here and reuse it in other places
# so it doesn't have to be parsed two or more times.
post_data = {}
match_target = channel_item['match_target']
sec = self.url_data.url_sec[match_target]
if sec.sec_def != ZATO_NONE or sec.sec_use_rbac is True:
if sec.sec_def != ZATO_NONE:
if sec.sec_def.sec_type == SEC_DEF_TYPE.OAUTH:
post_data.update(
QueryDict(payload, encoding='utf-8'))
# Eagerly parse the request but only if we expect XPath-based credentials. The request will be re-used
# in later steps, it won't be parsed twice or more.
elif sec.sec_def.sec_type == SEC_DEF_TYPE.XPATH_SEC:
wsgi_environ[
'zato.request.payload'] = payload_from_request(
cid, payload, channel_item.data_format,
channel_item.transport)
# Will raise an exception on any security violation
self.url_data.check_security(sec, cid, channel_item,
path_info, payload,
wsgi_environ, post_data,
worker_store)
# Check rate limiting now - this could not have been done earlier because we wanted
# for security checks to be made first. Otherwise, someone would be able to invoke
# our endpoint without credentials as many times as it is needed to exhaust the rate limit
# denying in this manner access to genuine users.
if channel_item.get('is_rate_limit_active'):
self.server.rate_limiting.check_limit(
cid, _rate_limit_type, channel_item['name'],
wsgi_environ['zato.http.remote_addr'])
# This is handy if someone invoked URLData's OAuth API manually
wsgi_environ['zato.oauth.post_data'] = post_data
# OK, no security exception at that point means we can finally invoke the service.
response = self.request_handler.handle(
cid, url_match, channel_item, wsgi_environ, payload,
worker_store, self.simple_io_config, post_data, path_info,
soap_action)
wsgi_environ['zato.http.response.headers'][
'Content-Type'] = response.content_type
wsgi_environ['zato.http.response.headers'].update(
response.headers)
wsgi_environ['zato.http.response.status'] = _status_response[
response.status_code]
if channel_item['content_encoding'] == 'gzip':
s = _stringio()
with _gzipfile(fileobj=s, mode='w') as f:
f.write(response.payload)
response.payload = s.getvalue()
s.close()
wsgi_environ['zato.http.response.headers'][
'Content-Encoding'] = 'gzip'
# Finally, return payload to the client
return response.payload
except Exception as e:
_format_exc = format_exc()
status = _status_internal_server_error
if isinstance(e, ClientHTTPError):
response = e.msg
status_code = e.status
# TODO: Refactor this series of if/else's into a lookup dict.
if isinstance(e, Unauthorized):
status = _status_unauthorized
wsgi_environ['zato.http.response.headers'][
'WWW-Authenticate'] = e.challenge
elif isinstance(e, BadRequest):
status = _status_bad_request
elif isinstance(e, NotFound):
status = _status_not_found
elif isinstance(e, MethodNotAllowed):
status = _status_method_not_allowed
elif isinstance(e, Forbidden):
status = _status_forbidden
elif isinstance(e, TooManyRequests):
status = _status_too_many_requests
else:
# JSON Schema validation
if isinstance(e, JSONSchemaValidationException):
status_code = _status_bad_request
needs_prefix = False if e.needs_err_details else True
response = JSONSchemaDictError(
cid,
e.needs_err_details,
e.error_msg,
needs_prefix=needs_prefix).serialize()
# Rate limiting and whitelisting
elif isinstance(e, RateLimitingException):
response, status_code, status = self._on_rate_limiting_exception(
cid, e, channel_item)
else:
status_code = INTERNAL_SERVER_ERROR
response = _format_exc if self.return_tracebacks else self.default_error_message
_exc = _stack_format(
e,
style='color',
show_vals='like_source',
truncate_vals=5000,
add_summary=True,
source_lines=20) if _stack_format else _format_exc
# TODO: This should be configurable. Some people may want such
# things to be on DEBUG whereas for others ERROR will make most sense
# in given circumstances.
logger.error(
'Caught an exception, cid:`%s`, status_code:`%s`, e:\n%s\n`%s`',
cid, status_code, _exc_sep, _exc)
try:
error_wrapper = get_client_error_wrapper(
channel_item['transport'], channel_item['data_format'])
except KeyError:
# It's OK. Apparently it's neither 'soap' nor json'
if logger.isEnabledFor(TRACE1):
msg = 'No client error wrapper for transport:`{}`, data_format:`{}`'.format(
channel_item.get('transport'),
channel_item.get('data_format'))
logger.log(TRACE1, msg)
else:
response = error_wrapper(cid, response)
wsgi_environ['zato.http.response.status'] = status
return response
# This is 404, no such URL path and SOAP action is not known either.
else:
response = _response_404.format(path_info,
wsgi_environ.get('REQUEST_METHOD'),
wsgi_environ.get('HTTP_ACCEPT'),
cid)
wsgi_environ['zato.http.response.status'] = _status_not_found
logger.error(response)
return response
def dispatch(self, cid, req_timestamp, wsgi_environ, worker_store):
""" Base method for dispatching incoming HTTP/SOAP messages. If the security
configuration is one of the technical account or HTTP basic auth,
the security validation is being performed. Otherwise, that step
is postponed until a concrete transport-specific handler is invoked.
"""
path_info = wsgi_environ['PATH_INFO']
soap_action = wsgi_environ.get('HTTP_SOAPACTION', '')
url_data = self.security.url_sec_get(path_info, soap_action)
payload = wsgi_environ['wsgi.input'].read()
if logger.isEnabledFor(logging.DEBUG):
msg = 'cid:[{}], payload:[{}], wsgi_environ:[{}]'.format(
cid, payload, wsgi_environ)
logger.debug(msg)
if url_data:
transport = url_data['transport']
data_format = url_data['data_format']
try:
if not url_data.is_active:
msg = 'url_data:[{}] is not active, raising NotFound'.format(
sorted(url_data.items()))
logger.warn(msg)
raise NotFound(cid, 'Inactive channel')
if url_data.sec_def != ZATO_NONE:
if url_data.sec_def.sec_type in (
security_def_type.tech_account,
security_def_type.basic_auth,
security_def_type.wss):
self.security.handle(cid, url_data, path_info, payload,
wsgi_environ)
else:
log_msg = '[{0}] sec_def.sec_type:[{1}] needs no auth'.format(
cid, url_data.sec_def.sec_type)
logger.debug(log_msg)
else:
log_msg = '[{0}] No security for URL [{1}]'.format(
cid, path_info)
logger.debug(log_msg)
handler = getattr(self, '{0}_handler'.format(transport))
service_info, response = handler.handle(
cid, wsgi_environ, payload, transport, worker_store,
self.simple_io_config, data_format, path_info)
wsgi_environ['zato.http.response.headers'][
'Content-Type'] = response.content_type
wsgi_environ['zato.http.response.headers'].update(
response.headers)
wsgi_environ['zato.http.response.status'] = b'{} {}'.format(
response.status_code, responses[response.status_code])
return response.payload
except Exception, e:
_format_exc = format_exc(e)
status = _status_internal_server_error
if isinstance(e, ClientHTTPError):
response = e.msg
status_code = e.status
if isinstance(e, Unauthorized):
status = _status_unauthorized
wsgi_environ['zato.http.response.headers'][
'WWW-Authenticate'] = e.challenge
elif isinstance(e, NotFound):
status = _status_not_found
else:
status_code = INTERNAL_SERVER_ERROR
response = _format_exc
# TODO: This should be configurable. Some people may want such
# things to be on DEBUG whereas for others ERROR will make most sense
# in given circumstances.
if logger.isEnabledFor(logging.ERROR):
msg = 'Caught an exception, cid:[{0}], status_code:[{1}], _format_exc:[{2}]'.format(
cid, status_code, _format_exc)
logger.log(logging.ERROR, msg)
try:
error_wrapper = get_client_error_wrapper(
transport, data_format)
except KeyError:
# It's OK. Apparently it's neither 'soap' nor json'
if logger.isEnabledFor(TRACE1):
msg = 'No client error wrapper for transport:[{}], data_format:[{}]'.format(
transport, data_format)
logger.log(TRACE1, msg)
else:
response = error_wrapper(cid, response)
wsgi_environ['zato.http.response.status'] = status
return response
def dispatch(self, cid, req_timestamp, wsgi_environ, worker_store):
""" Base method for dispatching incoming HTTP/SOAP messages. If the security
configuration is one of the technical account or HTTP basic auth,
the security validation is being performed. Otherwise, that step
is postponed until a concrete transport-specific handler is invoked.
"""
# Needed in later steps
path_info = wsgi_environ['PATH_INFO']
soap_action = wsgi_environ.get('HTTP_SOAPACTION', '')
# Fix up SOAP action - turns "my:soap:action" into my:soap:action,
# that is, strips it out of surrounding quotes, if any.
if soap_action:
soap_action = self._handle_quotes_soap_action(soap_action)
# Can we recognize this combination of URL path and SOAP action at all?
# This gives us the URL info and security data - but note that here
# we still haven't validated credentials, only matched the URL.
# Credentials are checked in a call to self.url_data.check_security
url_match, channel_item = self.url_data.match(path_info, soap_action)
if channel_item:
logger.debug('url_match:`%r`, channel_item:`%r`', url_match,
sorted(channel_item.items()))
# This is needed in parallel.py's on_wsgi_request
wsgi_environ['zato.http.channel_item'] = channel_item
payload = wsgi_environ['wsgi.input'].read()
# OK, we can possibly handle it
if url_match not in (None, False):
# This is a synchronous call so that whatever happens next we are always
# able to have at least initial audit log of requests.
if channel_item['audit_enabled']:
self.url_data.audit_set_request(cid, channel_item, payload,
wsgi_environ)
try:
# Raise 404 if the channel is inactive
if not channel_item['is_active']:
logger.warn(
'url_data:`%s` is not active, raising NotFound',
sorted(url_match.items()))
raise NotFound(cid, 'Channel inactive')
expected_method = channel_item['method']
if expected_method:
actual_method = wsgi_environ['REQUEST_METHOD']
if expected_method != actual_method:
logger.warn('Expected `%s` instead of `%s` for `%s`',
expected_method, actual_method,
channel_item['url_path'])
raise MethodNotAllowed(
cid, 'Method `{}` is not allowed here'.format(
actual_method))
# Need to read security info here so we know if POST needs to be
# parsed. If so, we do it here and reuse it in other places
# so it doesn't have to be parsed two or more times.
sec = self.url_data.url_sec[channel_item['match_target']]
if sec.sec_def != ZATO_NONE and sec.sec_def.sec_type == SEC_DEF_TYPE.OAUTH:
post_data = QueryDict(payload, encoding='utf-8')
else:
post_data = {}
# This is handy if someone invoked URLData's OAuth API manually
wsgi_environ['zato.oauth.post_data'] = post_data
# Eagerly parse the request but only if we expect XPath-based credentials. The request will be re-used
# in later steps, it won't be parsed twice or more.
if sec.sec_def != ZATO_NONE and sec.sec_def.sec_type == SEC_DEF_TYPE.XPATH_SEC:
wsgi_environ[
'zato.request.payload'] = payload_from_request(
cid, payload, channel_item.data_format,
channel_item.transport)
# Will raise an exception on any security violation
self.url_data.check_security(sec, cid, channel_item, path_info,
payload, wsgi_environ, post_data,
worker_store)
# OK, no security exception at that point means we can finally
# invoke the service.
response = self.request_handler.handle(
cid, url_match, channel_item, wsgi_environ, payload,
worker_store, self.simple_io_config, post_data)
# Got response from the service so we can construct response headers now
self.add_response_headers(wsgi_environ, response)
# Return the payload to the client
return response.payload
except Exception, e:
_format_exc = format_exc(e)
status = _status_internal_server_error
if isinstance(e, ClientHTTPError):
response = e.msg
status_code = e.status
# TODO: Refactor this series of if/else's into a lookup dict.
if isinstance(e, Unauthorized):
status = _status_unauthorized
wsgi_environ['zato.http.response.headers'][
'WWW-Authenticate'] = e.challenge
elif isinstance(e, BadRequest):
status = _status_bad_request
elif isinstance(e, NotFound):
status = _status_not_found
elif isinstance(e, MethodNotAllowed):
status = _status_method_not_allowed
elif isinstance(e, Forbidden):
status = _status_forbidden
elif isinstance(e, TooManyRequests):
status = _status_too_many_requests
else:
status_code = INTERNAL_SERVER_ERROR
response = _format_exc
# TODO: This should be configurable. Some people may want such
# things to be on DEBUG whereas for others ERROR will make most sense
# in given circumstances.
logger.error(
'Caught an exception, cid:`%s`, status_code:`%s`, _format_exc:`%s`',
cid, status_code, _format_exc)
try:
error_wrapper = get_client_error_wrapper(
channel_item['transport'], channel_item['data_format'])
except KeyError:
# It's OK. Apparently it's neither 'soap' nor json'
if logger.isEnabledFor(TRACE1):
msg = 'No client error wrapper for transport:`{}`, data_format:`{}`'.format(
channel_item.get('transport'),
channel_item.get('data_format'))
logger.log(TRACE1, msg)
else:
response = error_wrapper(cid, response)
wsgi_environ['zato.http.response.status'] = status
return response
def dispatch(self, cid, req_timestamp, wsgi_environ, worker_store):
""" Base method for dispatching incoming HTTP/SOAP messages. If the security
configuration is one of the technical account or HTTP basic auth,
the security validation is being performed. Otherwise, that step
is postponed until a concrete transport-specific handler is invoked.
"""
# Needed in later steps
path_info = wsgi_environ['PATH_INFO']
soap_action = wsgi_environ.get('HTTP_SOAPACTION', '')
# Fix up SOAP action - turns "my:soap:action" into my:soap:action,
# that is, strips it out of surrounding quotes, if any.
if soap_action:
soap_action = self._handle_quotes_soap_action(soap_action)
# Can we recognize this combination of URL path and SOAP action at all?
url_match, channel_item = self.url_data.match(path_info, soap_action)
# OK, we can possibly handle it
if url_match:
# Raise 404 if the channel is inactive
if not channel_item.is_active:
logger.warn('url_data:[%s] is not active, raising NotFound',
sorted(url_match.items()))
raise NotFound(cid, 'Channel inactive')
# Read payload only now, right before it's needed the first time,
# possibly, by security checks.
payload = wsgi_environ['wsgi.input'].read()
try:
# Will raise an exception on any security violation
self.url_data.check_security(cid, channel_item, path_info,
payload, wsgi_environ)
# OK, no security exception at that point means we can finally
# invoke the service.
response = self.request_handler.handle(cid, url_match,
channel_item,
wsgi_environ, payload,
worker_store,
self.simple_io_config)
# Got response from the service so we can construct response headers now
self.add_response_headers(wsgi_environ, response)
# Return the payload to the client
return response.payload
except Exception, e:
_format_exc = format_exc(e)
status = _status_internal_server_error
if isinstance(e, ClientHTTPError):
response = e.msg
status_code = e.status
if isinstance(e, Unauthorized):
status = _status_unauthorized
wsgi_environ['zato.http.response.headers'][
'WWW-Authenticate'] = e.challenge
elif isinstance(e, NotFound):
status = _status_not_found
else:
status_code = INTERNAL_SERVER_ERROR
response = _format_exc
# TODO: This should be configurable. Some people may want such
# things to be on DEBUG whereas for others ERROR will make most sense
# in given circumstances.
logger.error(
'Caught an exception, cid:[%s], status_code:[%s], _format_exc:[%s]',
cid, status_code, _format_exc)
try:
error_wrapper = get_client_error_wrapper(
channel_item.transport, channel_item.data_format)
except KeyError:
# It's OK. Apparently it's neither 'soap' nor json'
if logger.isEnabledFor(TRACE1):
msg = 'No client error wrapper for transport:[{}], data_format:[{}]'.format(
channel_item.transport, channel_item.data_format)
logger.log(TRACE1, msg)
else:
response = error_wrapper(cid, response)
wsgi_environ['zato.http.response.status'] = status
return response
def dispatch(self, cid, req_timestamp, wsgi_environ, worker_store):
""" Base method for dispatching incoming HTTP/SOAP messages. If the security
configuration is one of the technical account or HTTP basic auth,
the security validation is being performed. Otherwise, that step
is postponed until a concrete transport-specific handler is invoked.
"""
# Needed in later steps
path_info = wsgi_environ['PATH_INFO']
soap_action = wsgi_environ.get('HTTP_SOAPACTION', '')
# Fix up SOAP action - turns "my:soap:action" into my:soap:action,
# that is, strips it out of surrounding quotes, if any.
if soap_action:
soap_action = self._handle_quotes_soap_action(soap_action)
# Can we recognize this combination of URL path and SOAP action at all?
# This gives us the URL info and security data - but note that here
# we still haven't validated credentials, only matched the URL.
# Credentials are checked in a call to self.url_data.check_security
url_match, channel_item = self.url_data.match(path_info, soap_action)
if channel_item:
logger.debug('url_match:[%r], channel_item:[%r]', url_match,
sorted(channel_item.items()))
# This is needed in parallel.py's on_wsgi_request
wsgi_environ['zato.http.channel_item'] = channel_item
payload = wsgi_environ['wsgi.input'].read()
# OK, we can possibly handle it
if url_match:
# This is a synchronous call so that whatever happens next we are always
# able to have at least initial audit log of requests.
if channel_item['audit_enabled']:
self.url_data.audit_set_request(cid, channel_item, payload,
wsgi_environ)
# Raise 404 if the channel is inactive
if not channel_item['is_active']:
logger.warn('url_data:[%s] is not active, raising NotFound',
sorted(url_match.items()))
raise NotFound(cid, 'Channel inactive')
try:
# Need to read security info here so we know if POST needs to be
# parsed. If so, we do it here and reuse it in other places
# so it doesn't have to be parsed two or more times.
sec = self.url_data.url_sec[channel_item['match_target']]
if sec.sec_def != ZATO_NONE and sec.sec_def.sec_type == security_def_type.oauth:
post_data = QueryDict(payload, encoding='utf-8')
else:
post_data = None
# Will raise an exception on any security violation
self.url_data.check_security(sec, cid, channel_item, path_info,
payload, wsgi_environ, post_data)
# OK, no security exception at that point means we can finally
# invoke the service.
response = self.request_handler.handle(
cid, url_match, channel_item, wsgi_environ, payload,
worker_store, self.simple_io_config, post_data)
# Got response from the service so we can construct response headers now
self.add_response_headers(wsgi_environ, response)
# Return the payload to the client
return response.payload
except Exception, e:
_format_exc = format_exc(e)
status = _status_internal_server_error
if isinstance(e, ClientHTTPError):
response = e.msg
status_code = e.status
if isinstance(e, Unauthorized):
status = _status_unauthorized
wsgi_environ['zato.http.response.headers'][
'WWW-Authenticate'] = e.challenge
elif isinstance(e, NotFound):
status = _status_not_found
else:
status_code = INTERNAL_SERVER_ERROR
response = _format_exc
# TODO: This should be configurable. Some people may want such
# things to be on DEBUG whereas for others ERROR will make most sense
# in given circumstances.
logger.error(
'Caught an exception, cid:[%s], status_code:[%s], _format_exc:[%s]',
cid, status_code, _format_exc)
try:
error_wrapper = get_client_error_wrapper(
channel_item['transport'], channel_item['data_format'])
except KeyError:
# It's OK. Apparently it's neither 'soap' nor json'
if logger.isEnabledFor(TRACE1):
msg = 'No client error wrapper for transport:[{}], data_format:[{}]'.format(
channel_item['transport'],
channel_item['data_format'])
logger.log(TRACE1, msg)
else:
response = error_wrapper(cid, response)
wsgi_environ['zato.http.response.status'] = status
return response