653 lines
24 KiB
Python
653 lines
24 KiB
Python
from datetime import datetime
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try:
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import ujson as json
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except ImportError:
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import json
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import falcon
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import falcon.testing as testing
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_EXPECTED_BODY = {u'status': u'ok'}
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context = {'executed_methods': []}
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class CaptureResponseMiddleware(object):
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def process_response(self, req, resp, resource, req_succeeded):
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self.req = req
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self.resp = resp
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self.resource = resource
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self.req_succeeded = req_succeeded
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class RequestTimeMiddleware(object):
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def process_request(self, req, resp):
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global context
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context['start_time'] = datetime.utcnow()
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def process_resource(self, req, resp, resource, params):
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global context
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context['mid_time'] = datetime.utcnow()
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def process_response(self, req, resp, resource, req_succeeded):
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global context
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context['end_time'] = datetime.utcnow()
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context['req_succeeded'] = req_succeeded
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class TransactionIdMiddleware(object):
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def process_request(self, req, resp):
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global context
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context['transaction_id'] = 'unique-req-id'
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def process_response(self, req, resp, resource):
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pass
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class ExecutedFirstMiddleware(object):
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def process_request(self, req, resp):
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global context
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context['executed_methods'].append(
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'{0}.{1}'.format(self.__class__.__name__, 'process_request'))
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def process_resource(self, req, resp, resource, params):
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global context
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context['executed_methods'].append(
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'{0}.{1}'.format(self.__class__.__name__, 'process_resource'))
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# NOTE(kgriffs): This also tests that the framework can continue to
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# call process_response() methods that do not have a 'req_succeeded'
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# arg.
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def process_response(self, req, resp, resource):
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global context
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context['executed_methods'].append(
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'{0}.{1}'.format(self.__class__.__name__, 'process_response'))
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context['req'] = req
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context['resp'] = resp
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context['resource'] = resource
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class ExecutedLastMiddleware(ExecutedFirstMiddleware):
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pass
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class RemoveBasePathMiddleware(object):
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def process_request(self, req, resp):
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req.path = req.path.replace('/base_path', '', 1)
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class AccessParamsMiddleware(object):
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def process_resource(self, req, resp, resource, params):
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global context
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params['added'] = True
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context['params'] = params
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class MiddlewareClassResource(object):
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def on_get(self, req, resp, **kwargs):
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resp.status = falcon.HTTP_200
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resp.body = json.dumps(_EXPECTED_BODY)
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def on_post(self, req, resp):
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raise falcon.HTTPForbidden(falcon.HTTP_403, 'Setec Astronomy')
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class TestMiddleware(testing.TestBase):
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def setUp(self):
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# Clear context
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global context
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context = {'executed_methods': []}
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testing.TestBase.setUp(self)
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# TODO(kgriffs): Consider adding this to TestBase
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def simulate_json_request(self, *args, **kwargs):
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result = self.simulate_request(*args, decode='utf-8', **kwargs)
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return json.loads(result)
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class TestRequestTimeMiddleware(TestMiddleware):
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def test_skip_process_resource(self):
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global context
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self.api = falcon.API(middleware=[RequestTimeMiddleware()])
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self.api.add_route('/', MiddlewareClassResource())
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self.simulate_request('/404')
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self.assertEqual(self.srmock.status, falcon.HTTP_404)
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self.assertIn('start_time', context)
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self.assertNotIn('mid_time', context)
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self.assertIn('end_time', context)
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self.assertFalse(context['req_succeeded'])
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def test_add_invalid_middleware(self):
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"""Test than an invalid class can not be added as middleware"""
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class InvalidMiddleware():
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def process_request(self, *args):
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pass
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mw_list = [RequestTimeMiddleware(), InvalidMiddleware]
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self.assertRaises(AttributeError, falcon.API, middleware=mw_list)
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mw_list = [RequestTimeMiddleware(), 'InvalidMiddleware']
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self.assertRaises(TypeError, falcon.API, middleware=mw_list)
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mw_list = [{'process_request': 90}]
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self.assertRaises(TypeError, falcon.API, middleware=mw_list)
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def test_response_middleware_raises_exception(self):
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"""Test that error in response middleware is propagated up"""
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class RaiseErrorMiddleware(object):
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def process_response(self, req, resp, resource):
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raise Exception('Always fail')
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self.api = falcon.API(middleware=[RaiseErrorMiddleware()])
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self.api.add_route(self.test_route, MiddlewareClassResource())
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self.assertRaises(Exception, self.simulate_request, self.test_route)
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def test_log_get_request(self):
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"""Test that Log middleware is executed"""
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global context
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self.api = falcon.API(middleware=[RequestTimeMiddleware()])
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self.api.add_route(self.test_route, MiddlewareClassResource())
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body = self.simulate_json_request(self.test_route)
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self.assertEqual(_EXPECTED_BODY, body)
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self.assertEqual(self.srmock.status, falcon.HTTP_200)
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self.assertIn('start_time', context)
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self.assertIn('mid_time', context)
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self.assertIn('end_time', context)
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self.assertTrue(context['mid_time'] >= context['start_time'],
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'process_resource not executed after request')
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self.assertTrue(context['end_time'] >= context['start_time'],
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'process_response not executed after request')
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self.assertTrue(context['req_succeeded'])
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class TestTransactionIdMiddleware(TestMiddleware):
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def test_generate_trans_id_with_request(self):
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"""Test that TransactionIdmiddleware is executed"""
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global context
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self.api = falcon.API(middleware=TransactionIdMiddleware())
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self.api.add_route(self.test_route, MiddlewareClassResource())
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body = self.simulate_json_request(self.test_route)
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self.assertEqual(_EXPECTED_BODY, body)
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self.assertEqual(self.srmock.status, falcon.HTTP_200)
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self.assertIn('transaction_id', context)
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self.assertEqual('unique-req-id', context['transaction_id'])
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class TestSeveralMiddlewares(TestMiddleware):
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def test_generate_trans_id_and_time_with_request(self):
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global context
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self.api = falcon.API(middleware=[TransactionIdMiddleware(),
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RequestTimeMiddleware()])
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self.api.add_route(self.test_route, MiddlewareClassResource())
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body = self.simulate_json_request(self.test_route)
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self.assertEqual(_EXPECTED_BODY, body)
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self.assertEqual(self.srmock.status, falcon.HTTP_200)
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self.assertIn('transaction_id', context)
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self.assertEqual('unique-req-id', context['transaction_id'])
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self.assertIn('start_time', context)
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self.assertIn('mid_time', context)
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self.assertIn('end_time', context)
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self.assertTrue(context['mid_time'] >= context['start_time'],
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'process_resource not executed after request')
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self.assertTrue(context['end_time'] >= context['start_time'],
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'process_response not executed after request')
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def test_legacy_middleware_called_with_correct_args(self):
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global context
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self.api = falcon.API(middleware=[ExecutedFirstMiddleware()])
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self.api.add_route(self.test_route, MiddlewareClassResource())
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self.simulate_request(self.test_route)
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self.assertIsInstance(context['req'], falcon.Request)
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self.assertIsInstance(context['resp'], falcon.Response)
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self.assertIsInstance(context['resource'], MiddlewareClassResource)
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def test_middleware_execution_order(self):
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global context
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self.api = falcon.API(middleware=[ExecutedFirstMiddleware(),
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ExecutedLastMiddleware()])
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self.api.add_route(self.test_route, MiddlewareClassResource())
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body = self.simulate_json_request(self.test_route)
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self.assertEqual(_EXPECTED_BODY, body)
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self.assertEqual(self.srmock.status, falcon.HTTP_200)
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# as the method registration is in a list, the order also is
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# tested
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expectedExecutedMethods = [
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'ExecutedFirstMiddleware.process_request',
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'ExecutedLastMiddleware.process_request',
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'ExecutedFirstMiddleware.process_resource',
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'ExecutedLastMiddleware.process_resource',
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'ExecutedLastMiddleware.process_response',
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'ExecutedFirstMiddleware.process_response'
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]
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self.assertEqual(expectedExecutedMethods, context['executed_methods'])
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def test_independent_middleware_execution_order(self):
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global context
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self.api = falcon.API(independent_middleware=True,
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middleware=[ExecutedFirstMiddleware(),
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ExecutedLastMiddleware()])
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self.api.add_route(self.test_route, MiddlewareClassResource())
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body = self.simulate_json_request(self.test_route)
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self.assertEqual(_EXPECTED_BODY, body)
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self.assertEqual(self.srmock.status, falcon.HTTP_200)
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# as the method registration is in a list, the order also is
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# tested
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expectedExecutedMethods = [
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'ExecutedFirstMiddleware.process_request',
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'ExecutedLastMiddleware.process_request',
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'ExecutedFirstMiddleware.process_resource',
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'ExecutedLastMiddleware.process_resource',
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'ExecutedLastMiddleware.process_response',
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'ExecutedFirstMiddleware.process_response'
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]
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self.assertEqual(expectedExecutedMethods, context['executed_methods'])
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def test_multiple_reponse_mw_throw_exception(self):
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"""Test that error in inner middleware leaves"""
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global context
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context['req_succeeded'] = []
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class RaiseStatusMiddleware(object):
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def process_response(self, req, resp, resource):
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raise falcon.HTTPStatus(falcon.HTTP_201)
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class RaiseErrorMiddleware(object):
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def process_response(self, req, resp, resource):
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raise falcon.HTTPError(falcon.HTTP_748)
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class ProcessResponseMiddleware(object):
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def process_response(self, req, resp, resource, req_succeeded):
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context['executed_methods'].append('process_response')
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context['req_succeeded'].append(req_succeeded)
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self.api = falcon.API(middleware=[ProcessResponseMiddleware(),
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RaiseErrorMiddleware(),
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ProcessResponseMiddleware(),
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RaiseStatusMiddleware(),
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ProcessResponseMiddleware()])
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self.api.add_route(self.test_route, MiddlewareClassResource())
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self.simulate_request(self.test_route)
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self.assertEqual(self.srmock.status, falcon.HTTP_748)
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expected_methods = ['process_response'] * 3
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self.assertEqual(context['executed_methods'], expected_methods)
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self.assertEqual(context['req_succeeded'], [True, False, False])
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def test_inner_mw_throw_exception(self):
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"""Test that error in inner middleware leaves"""
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global context
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class RaiseErrorMiddleware(object):
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def process_request(self, req, resp):
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raise Exception('Always fail')
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self.api = falcon.API(middleware=[TransactionIdMiddleware(),
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RequestTimeMiddleware(),
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RaiseErrorMiddleware()])
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self.api.add_route(self.test_route, MiddlewareClassResource())
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self.assertRaises(Exception, self.simulate_request, self.test_route)
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# RequestTimeMiddleware process_response should be executed
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self.assertIn('transaction_id', context)
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self.assertIn('start_time', context)
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self.assertNotIn('mid_time', context)
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self.assertIn('end_time', context)
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def test_inner_mw_with_ex_handler_throw_exception(self):
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"""Test that error in inner middleware leaves"""
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global context
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class RaiseErrorMiddleware(object):
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def process_request(self, req, resp, resource):
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raise Exception('Always fail')
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self.api = falcon.API(middleware=[TransactionIdMiddleware(),
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RequestTimeMiddleware(),
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RaiseErrorMiddleware()])
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def handler(ex, req, resp, params):
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context['error_handler'] = True
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self.api.add_error_handler(Exception, handler)
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self.api.add_route(self.test_route, MiddlewareClassResource())
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self.simulate_request(self.test_route)
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# RequestTimeMiddleware process_response should be executed
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self.assertIn('transaction_id', context)
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self.assertIn('start_time', context)
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self.assertNotIn('mid_time', context)
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self.assertIn('end_time', context)
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self.assertIn('error_handler', context)
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def test_outer_mw_with_ex_handler_throw_exception(self):
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"""Test that error in inner middleware leaves"""
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global context
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class RaiseErrorMiddleware(object):
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def process_request(self, req, resp):
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raise Exception('Always fail')
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self.api = falcon.API(middleware=[TransactionIdMiddleware(),
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RaiseErrorMiddleware(),
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RequestTimeMiddleware()])
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def handler(ex, req, resp, params):
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context['error_handler'] = True
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self.api.add_error_handler(Exception, handler)
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self.api.add_route(self.test_route, MiddlewareClassResource())
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self.simulate_request(self.test_route)
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# Any mw is executed now...
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self.assertIn('transaction_id', context)
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self.assertNotIn('start_time', context)
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self.assertNotIn('mid_time', context)
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self.assertNotIn('end_time', context)
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self.assertIn('error_handler', context)
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def test_order_mw_executed_when_exception_in_resp(self):
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"""Test that error in inner middleware leaves"""
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global context
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class RaiseErrorMiddleware(object):
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def process_response(self, req, resp, resource):
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raise Exception('Always fail')
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self.api = falcon.API(middleware=[ExecutedFirstMiddleware(),
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RaiseErrorMiddleware(),
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ExecutedLastMiddleware()])
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def handler(ex, req, resp, params):
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pass
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self.api.add_error_handler(Exception, handler)
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self.api.add_route(self.test_route, MiddlewareClassResource())
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self.simulate_request(self.test_route)
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# Any mw is executed now...
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expectedExecutedMethods = [
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'ExecutedFirstMiddleware.process_request',
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'ExecutedLastMiddleware.process_request',
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'ExecutedFirstMiddleware.process_resource',
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'ExecutedLastMiddleware.process_resource',
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'ExecutedLastMiddleware.process_response',
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'ExecutedFirstMiddleware.process_response'
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]
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self.assertEqual(expectedExecutedMethods, context['executed_methods'])
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def test_order_independent_mw_executed_when_exception_in_resp(self):
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"""Test that error in inner middleware leaves"""
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global context
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class RaiseErrorMiddleware(object):
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def process_response(self, req, resp, resource):
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raise Exception('Always fail')
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self.api = falcon.API(independent_middleware=True,
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middleware=[ExecutedFirstMiddleware(),
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RaiseErrorMiddleware(),
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ExecutedLastMiddleware()])
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def handler(ex, req, resp, params):
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pass
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self.api.add_error_handler(Exception, handler)
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self.api.add_route(self.test_route, MiddlewareClassResource())
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self.simulate_request(self.test_route)
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# Any mw is executed now...
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expectedExecutedMethods = [
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'ExecutedFirstMiddleware.process_request',
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'ExecutedLastMiddleware.process_request',
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'ExecutedFirstMiddleware.process_resource',
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'ExecutedLastMiddleware.process_resource',
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'ExecutedLastMiddleware.process_response',
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'ExecutedFirstMiddleware.process_response'
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]
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self.assertEqual(expectedExecutedMethods, context['executed_methods'])
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def test_order_mw_executed_when_exception_in_req(self):
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"""Test that error in inner middleware leaves"""
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global context
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class RaiseErrorMiddleware(object):
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def process_request(self, req, resp):
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raise Exception('Always fail')
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self.api = falcon.API(middleware=[ExecutedFirstMiddleware(),
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RaiseErrorMiddleware(),
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ExecutedLastMiddleware()])
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def handler(ex, req, resp, params):
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pass
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self.api.add_error_handler(Exception, handler)
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self.api.add_route(self.test_route, MiddlewareClassResource())
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self.simulate_request(self.test_route)
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# Any mw is executed now...
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expectedExecutedMethods = [
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'ExecutedFirstMiddleware.process_request',
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'ExecutedFirstMiddleware.process_response'
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]
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self.assertEqual(expectedExecutedMethods, context['executed_methods'])
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def test_order_independent_mw_executed_when_exception_in_req(self):
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"""Test that error in inner middleware leaves"""
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global context
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class RaiseErrorMiddleware(object):
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def process_request(self, req, resp):
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raise Exception('Always fail')
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self.api = falcon.API(independent_middleware=True,
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middleware=[ExecutedFirstMiddleware(),
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RaiseErrorMiddleware(),
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ExecutedLastMiddleware()])
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def handler(ex, req, resp, params):
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pass
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self.api.add_error_handler(Exception, handler)
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self.api.add_route(self.test_route, MiddlewareClassResource())
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self.simulate_request(self.test_route)
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# All response middleware still executed...
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expectedExecutedMethods = [
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'ExecutedFirstMiddleware.process_request',
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'ExecutedLastMiddleware.process_response',
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'ExecutedFirstMiddleware.process_response'
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]
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self.assertEqual(expectedExecutedMethods, context['executed_methods'])
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def test_order_mw_executed_when_exception_in_rsrc(self):
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"""Test that error in inner middleware leaves"""
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global context
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class RaiseErrorMiddleware(object):
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def process_resource(self, req, resp, resource):
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raise Exception('Always fail')
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self.api = falcon.API(middleware=[ExecutedFirstMiddleware(),
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RaiseErrorMiddleware(),
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ExecutedLastMiddleware()])
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def handler(ex, req, resp, params):
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pass
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self.api.add_error_handler(Exception, handler)
|
|
|
|
self.api.add_route(self.test_route, MiddlewareClassResource())
|
|
|
|
self.simulate_request(self.test_route)
|
|
|
|
# Any mw is executed now...
|
|
expectedExecutedMethods = [
|
|
'ExecutedFirstMiddleware.process_request',
|
|
'ExecutedLastMiddleware.process_request',
|
|
'ExecutedFirstMiddleware.process_resource',
|
|
'ExecutedLastMiddleware.process_response',
|
|
'ExecutedFirstMiddleware.process_response'
|
|
]
|
|
self.assertEqual(expectedExecutedMethods, context['executed_methods'])
|
|
|
|
def test_order_independent_mw_executed_when_exception_in_rsrc(self):
|
|
"""Test that error in inner middleware leaves"""
|
|
global context
|
|
|
|
class RaiseErrorMiddleware(object):
|
|
|
|
def process_resource(self, req, resp, resource):
|
|
raise Exception('Always fail')
|
|
|
|
self.api = falcon.API(independent_middleware=True,
|
|
middleware=[ExecutedFirstMiddleware(),
|
|
RaiseErrorMiddleware(),
|
|
ExecutedLastMiddleware()])
|
|
|
|
def handler(ex, req, resp, params):
|
|
pass
|
|
|
|
self.api.add_error_handler(Exception, handler)
|
|
|
|
self.api.add_route(self.test_route, MiddlewareClassResource())
|
|
|
|
self.simulate_request(self.test_route)
|
|
|
|
# Any mw is executed now...
|
|
expectedExecutedMethods = [
|
|
'ExecutedFirstMiddleware.process_request',
|
|
'ExecutedLastMiddleware.process_request',
|
|
'ExecutedFirstMiddleware.process_resource',
|
|
'ExecutedLastMiddleware.process_response',
|
|
'ExecutedFirstMiddleware.process_response'
|
|
]
|
|
self.assertEqual(expectedExecutedMethods, context['executed_methods'])
|
|
|
|
|
|
class TestRemoveBasePathMiddleware(TestMiddleware):
|
|
|
|
def test_base_path_is_removed_before_routing(self):
|
|
"""Test that RemoveBasePathMiddleware is executed before routing"""
|
|
self.api = falcon.API(middleware=RemoveBasePathMiddleware())
|
|
|
|
# We dont include /base_path as it will be removed in middleware
|
|
self.api.add_route('/sub_path', MiddlewareClassResource())
|
|
|
|
body = self.simulate_json_request('/base_path/sub_path')
|
|
self.assertEqual(_EXPECTED_BODY, body)
|
|
self.assertEqual(self.srmock.status, falcon.HTTP_200)
|
|
self.simulate_request('/base_pathIncorrect/sub_path')
|
|
self.assertEqual(self.srmock.status, falcon.HTTP_404)
|
|
|
|
|
|
class TestResourceMiddleware(TestMiddleware):
|
|
|
|
def test_can_access_resource_params(self):
|
|
"""Test that params can be accessed from within process_resource"""
|
|
global context
|
|
|
|
class Resource:
|
|
def on_get(self, req, resp, **params):
|
|
resp.body = json.dumps(params)
|
|
|
|
self.api = falcon.API(middleware=AccessParamsMiddleware())
|
|
self.api.add_route('/path/{id}', Resource())
|
|
body = self.simulate_json_request('/path/22')
|
|
|
|
self.assertIn('params', context)
|
|
self.assertTrue(context['params'])
|
|
self.assertEqual(context['params']['id'], '22')
|
|
self.assertEqual(body, {'added': True, 'id': '22'})
|
|
|
|
|
|
class TestErrorHandling(TestMiddleware):
|
|
|
|
def setUp(self):
|
|
super(TestErrorHandling, self).setUp()
|
|
|
|
self.mw = CaptureResponseMiddleware()
|
|
|
|
self.api = falcon.API(middleware=self.mw)
|
|
self.api.add_route('/', MiddlewareClassResource())
|
|
|
|
def test_error_composed_before_resp_middleware_called(self):
|
|
self.simulate_request('/', method='POST')
|
|
self.assertEqual(self.srmock.status, falcon.HTTP_403)
|
|
self.assertEqual(self.mw.resp.status, self.srmock.status)
|
|
|
|
composed_body = json.loads(self.mw.resp.body)
|
|
self.assertEqual(composed_body['title'], self.srmock.status)
|
|
|
|
self.assertFalse(self.mw.req_succeeded)
|
|
|
|
# NOTE(kgriffs): Sanity-check the other params passed to
|
|
# process_response()
|
|
self.assertIsInstance(self.mw.req, falcon.Request)
|
|
self.assertIsInstance(self.mw.resource, MiddlewareClassResource)
|
|
|
|
def test_http_status_raised_from_error_handler(self):
|
|
def _http_error_handler(error, req, resp, params):
|
|
raise falcon.HTTPStatus(falcon.HTTP_201)
|
|
|
|
# NOTE(kgriffs): This will take precedence over the default
|
|
# handler for facon.HTTPError.
|
|
self.api.add_error_handler(falcon.HTTPError, _http_error_handler)
|
|
|
|
self.simulate_request('/', method='POST')
|
|
self.assertEqual(self.srmock.status, falcon.HTTP_201)
|
|
self.assertEqual(self.mw.resp.status, self.srmock.status)
|