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How to use requests_response method in localstack
Best Python code snippet using localstack_python
connection.py
Source:connection.py 
1# coding: utf82# Copyright 2014-2015 Vincent Jacques <vincent@vincent-jacques.net>3import datetime4import hashlib5import hmac6import json7import urlparse8import time9import requests10import LowVoltage as _lv11import LowVoltage.testing as _tst12import LowVoltage.exceptions as _exn13from . import retry_policies14class Connection(object):15 """16 The main entry point of the package.17 :param region: the identifier of the AWS region you want to connect to. Like ``"us-west-2"`` or ``"eu-west-1"``.18 :param credentials: a credentials providers. See :mod:`.credentials`.19 :param endpoint:20 the HTTP endpoint you want to connect to.21 Typically useful to connect to `DynamoDB Local <http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Tools.DynamoDBLocal.html>`__22 with ``endpoint="http://localhost:8000/"``.23 If left ``None``, it will be computed from the region.24 :param retry_policy: a retry policy. See :mod:`.retry_policies`. If left ``None``, the :obj:`~.retry_policies.DEFAULT` retry policy will be used.25 :param requests_session: a ``Session`` object from the `python-requests <http://python-requests.org>`__ library. Typically not used. Leave it to ``None`` and one will be created for you.26 """27 def __init__(self, region, credentials, endpoint=None, retry_policy=None, requests_session=None):28 if endpoint is None:29 endpoint = "https://dynamodb.{}.amazonaws.com/".format(region)30 if retry_policy is None:31 retry_policy = retry_policies.DEFAULT32 if requests_session is None:33 requests_session = requests.Session()34 self.__region = region35 self.__credentials = credentials36 self.__endpoint = endpoint37 self.__host = urlparse.urlparse(self.__endpoint).hostname38 self.__retry_policy = retry_policy39 self.__session = requests_session40 # Dependency injection through monkey-patching41 self.__signer = Signer(self.__region, self.__host)42 self.__responder = Responder()43 self.__now = datetime.datetime.utcnow44 def __call__(self, action):45 """46 Send requests and return responses.47 """48 errors = []49 while True:50 try:51 return self.__request_once(action)52 except _exn.Error as e:53 if e.retryable:54 errors.append(e)55 delay = self.__retry_policy.retry(action, errors)56 if delay is None:57 raise58 else:59 time.sleep(delay)60 else:61 raise62 def __request_once(self, action):63 key, secret, token = self.__credentials.get()64 payload = json.dumps(action.payload)65 headers = self.__signer(key, secret, self.__now(), action.name, payload)66 if token is not None:67 headers["X-Amz-Security-Token"] = token68 try:69 r = self.__session.post(self.__endpoint, data=payload, headers=headers)70 except requests.exceptions.RequestException as e:71 raise _exn.NetworkError(e)72 except Exception as e:73 raise _exn.UnknownError(e)74 return self.__responder(action.response_class, r)75class ConnectionUnitTests(_tst.UnitTestsWithMocks):76 def setUp(self):77 super(ConnectionUnitTests, self).setUp()78 self.credentials = self.mocks.create("credentials")79 self.retry_policy = self.mocks.create("retry_policy")80 self.session = self.mocks.create("session")81 self.connection = Connection(82 region="us-west-2",83 credentials=self.credentials.object,84 endpoint="http://endpoint.com:8000/",85 retry_policy=self.retry_policy.object,86 requests_session=self.session.object,87 )88 self.now = self.mocks.replace("self.connection._Connection__now")89 self.signer = self.mocks.replace("self.connection._Connection__signer")90 self.responder = self.mocks.replace("self.connection._Connection__responder")91 self.action = self.mocks.create("action")92 def test_identification_with_token(self):93 self.credentials.expect.get().andReturn(("a", "b", "t"))94 self.action.expect.payload.andReturn({"d": "e"})95 self.now.expect().andReturn("f")96 self.action.expect.name.andReturn("c")97 self.signer.expect("a", "b", "f", "c", '{"d": "e"}').andReturn({"g": "h"})98 self.session.expect.post("http://endpoint.com:8000/", data='{"d": "e"}', headers={"g": "h", "X-Amz-Security-Token": "t"}).andReturn("i")99 self.action.expect.response_class.andReturn("j")100 self.responder.expect("j", "i").andReturn("k")101 self.assertEqual(self.connection(self.action.object), "k")102 def __expect_post(self):103 self.credentials.expect.get().andReturn(("a", "b", None))104 self.action.expect.payload.andReturn({"d": "e"})105 self.now.expect().andReturn("f")106 self.action.expect.name.andReturn("c")107 self.signer.expect("a", "b", "f", "c", '{"d": "e"}').andReturn({"g": "h"})108 return self.session.expect.post("http://endpoint.com:8000/", data='{"d": "e"}', headers={"g": "h"})109 def test_success_on_first_try(self):110 self.__expect_post().andReturn("i")111 self.action.expect.response_class.andReturn("j")112 self.responder.expect("j", "i").andReturn("k")113 self.assertEqual(self.connection(self.action.object), "k")114 def test_success_on_fourth_try(self):115 self.__expect_post().andReturn("i")116 self.action.expect.response_class.andReturn("j")117 exception1 = _exn.ProvisionedThroughputExceededException()118 self.responder.expect("j", "i").andRaise(exception1)119 self.retry_policy.expect.retry(self.action.object, [exception1]).andReturn(0)120 self.__expect_post().andReturn("k")121 self.action.expect.response_class.andReturn("l")122 exception2 = _exn.ProvisionedThroughputExceededException()123 self.responder.expect("l", "k").andRaise(exception2)124 self.retry_policy.expect.retry(self.action.object, [exception1, exception2]).andReturn(0)125 self.__expect_post().andReturn("m")126 self.action.expect.response_class.andReturn("n")127 exception3 = _exn.ProvisionedThroughputExceededException()128 self.responder.expect("n", "m").andRaise(exception3)129 self.retry_policy.expect.retry(self.action.object, [exception1, exception2, exception3]).andReturn(0)130 self.__expect_post().andReturn("o")131 self.action.expect.response_class.andReturn("p")132 self.responder.expect("p", "o").andReturn("q")133 self.assertEqual(self.connection(self.action.object), "q")134 def test_failure_on_second_try(self):135 self.__expect_post().andReturn("i")136 self.action.expect.response_class.andReturn("j")137 exception1 = _exn.ProvisionedThroughputExceededException()138 self.responder.expect("j", "i").andRaise(exception1)139 self.retry_policy.expect.retry(self.action.object, [exception1]).andReturn(0)140 self.__expect_post().andReturn("k")141 self.action.expect.response_class.andReturn("l")142 exception2 = _exn.UnknownClientError()143 self.responder.expect("l", "k").andRaise(exception2)144 with self.assertRaises(_exn.UnknownClientError) as catcher:145 self.connection(self.action.object)146 self.assertIs(catcher.exception, exception2)147 def test_give_up_after_third_try(self):148 self.__expect_post().andReturn("i")149 self.action.expect.response_class.andReturn("j")150 exception1 = _exn.ProvisionedThroughputExceededException()151 self.responder.expect("j", "i").andRaise(exception1)152 self.retry_policy.expect.retry(self.action.object, [exception1]).andReturn(0)153 self.__expect_post().andReturn("k")154 self.action.expect.response_class.andReturn("l")155 exception2 = _exn.ProvisionedThroughputExceededException()156 self.responder.expect("l", "k").andRaise(exception2)157 self.retry_policy.expect.retry(self.action.object, [exception1, exception2]).andReturn(0)158 self.__expect_post().andReturn("m")159 self.action.expect.response_class.andReturn("n")160 exception3 = _exn.ProvisionedThroughputExceededException()161 self.responder.expect("n", "m").andRaise(exception3)162 self.retry_policy.expect.retry(self.action.object, [exception1, exception2, exception3]).andReturn(None)163 with self.assertRaises(_exn.ProvisionedThroughputExceededException) as catcher:164 self.connection(self.action.object)165 self.assertIs(catcher.exception, exception3)166 def test_success_after_network_error(self):167 exception = requests.exceptions.RequestException()168 self.__expect_post().andRaise(exception)169 self.retry_policy.expect.retry.withArguments(lambda args, kwds: args[0] is self.action.object and isinstance(args[1][0], _exn.NetworkError)).andReturn(0)170 self.__expect_post().andReturn("k")171 self.action.expect.response_class.andReturn("l")172 exception2 = _exn.ProvisionedThroughputExceededException()173 self.responder.expect("l", "k").andReturn("m")174 self.assertEqual(self.connection(self.action.object), "m")175 def test_failure_on_unkown_exception_raised_by_requests(self):176 exception = Exception()177 self.__expect_post().andRaise(exception)178 with self.assertRaises(_exn.UnknownError) as catcher:179 self.connection(self.action.object)180 self.assertEqual(catcher.exception.args, (exception,))181 def test_success_after_network_error_during_credentials(self):182 exception = _exn.NetworkError()183 self.credentials.expect.get().andRaise(exception)184 self.retry_policy.expect.retry(self.action.object, [exception]).andReturn(0)185 self.__expect_post().andReturn("k")186 self.action.expect.response_class.andReturn("l")187 exception2 = _exn.ProvisionedThroughputExceededException()188 self.responder.expect("l", "k").andReturn("m")189 self.assertEqual(self.connection(self.action.object), "m")190class Signer(object):191 def __init__(self, region, host):192 self.__host = host193 self.__region = region194 def __call__(self, key, secret, now, action, payload):195 # http://docs.aws.amazon.com/general/latest/gr/sigv4-signed-request-examples.html196 timestamp = now.strftime("%Y%m%dT%H%M%SZ")197 datestamp = now.strftime("%Y%m%d")198 headers = {199 "Content-Type": "application/x-amz-json-1.0",200 "X-Amz-Date": timestamp,201 "X-Amz-Target": "DynamoDB_20120810.{}".format(action),202 "Host": self.__host,203 }204 header_names = ";".join(k.lower() for k in sorted(headers.keys()))205 request = "POST\n/\n\n{}\n{}\n{}".format(206 "".join("{}:{}\n".format(k.lower(), v) for k, v in sorted(headers.iteritems())),207 header_names,208 hashlib.sha256(payload.encode("utf-8")).hexdigest(),209 )210 credentials = "{}/{}/dynamodb/aws4_request".format(datestamp, self.__region)211 to_sign = "AWS4-HMAC-SHA256\n{}\n{}\n{}".format(timestamp, credentials, hashlib.sha256(request.encode("utf-8")).hexdigest())212 hmac_key = hmac.new(213 hmac.new(214 hmac.new(215 hmac.new(216 "AWS4{}".format(secret).encode("utf-8"),217 datestamp.encode("utf-8"),218 hashlib.sha256219 ).digest(),220 self.__region.encode("utf-8"),221 hashlib.sha256222 ).digest(),223 "dynamodb".encode("utf-8"),224 hashlib.sha256225 ).digest(),226 "aws4_request".encode("utf-8"),227 hashlib.sha256228 ).digest()229 headers["Authorization"] = "AWS4-HMAC-SHA256 Credential={}/{}, SignedHeaders={}, Signature={}".format(230 key,231 credentials,232 header_names,233 hmac.new(hmac_key, to_sign.encode("utf-8"), hashlib.sha256).hexdigest(),234 )235 return headers236class SignerUnitTests(_tst.UnitTests):237 def test(self):238 signer = Signer("us-west-2", "localhost")239 self.assertEqual(240 signer("DummyKey", "DummySecret", datetime.datetime(2014, 10, 4, 6, 33, 2), "Operation", '{"Payload": "Value"}'),241 {242 "Host": "localhost",243 "Content-Type": "application/x-amz-json-1.0",244 "Authorization": "AWS4-HMAC-SHA256 Credential=DummyKey/20141004/us-west-2/dynamodb/aws4_request, SignedHeaders=content-type;host;x-amz-date;x-amz-target, Signature=f47b4025d95692c1623d01bd7db6d53e68f7a8a28264c1ab3393477f0dae520a",245 "X-Amz-Date": "20141004T063302Z",246 "X-Amz-Target": "DynamoDB_20120810.Operation",247 }248 )249class Responder(object):250 def __call__(self, response_class, r):251 status_code = r.status_code252 if status_code == 200:253 try:254 data = r.json()255 except ValueError:256 raise _exn.ServerError(200, r.text)257 return response_class(**data)258 else:259 self.__raise(status_code, r)260 def __raise(self, status_code, r):261 try:262 data = r.json()263 except ValueError:264 data = r.text265 if isinstance(data, dict):266 typ = data.get("__type")267 else:268 typ = None269 if 400 <= status_code < 500:270 if typ is not None:271 for suffix, cls in _exn.client_errors:272 if typ.endswith(suffix):273 raise cls(data)274 raise _exn.UnknownClientError(status_code, data)275 elif 500 <= status_code < 600:276 raise _exn.ServerError(status_code, data)277 else:278 raise _exn.UnknownError(status_code, data)279class ResponderUnitTests(_tst.UnitTestsWithMocks):280 def setUp(self):281 super(ResponderUnitTests, self).setUp()282 self.response_class = self.mocks.create("response_class")283 self.response_instance = object()284 self.requests_response = self.mocks.create("requests_response")285 self.json = {"a": 0}286 self.responder = Responder()287 def test_good_response(self):288 self.requests_response.expect.status_code.andReturn(200)289 self.requests_response.expect.json().andReturn(self.json)290 self.response_class.expect(a=0).andReturn(self.response_instance)291 self.assertIs(self.responder(self.response_class.object, self.requests_response.object), self.response_instance)292 def test_non_json_response_with_good_status(self):293 self.requests_response.expect.status_code.andReturn(200)294 self.requests_response.expect.json().andRaise(ValueError)295 self.requests_response.expect.text.andReturn("foobar")296 with self.assertRaises(_exn.ServerError) as catcher:297 self.responder(self.response_class.object, self.requests_response.object)298 self.assertEqual(catcher.exception.args, (200, "foobar"))299 def test_unknown_client_error_with_correct_json(self):300 self.requests_response.expect.status_code.andReturn(400)301 self.requests_response.expect.json().andReturn({"__type": "NobodyKnewThisCouldHappen", "Message": "tralala"})302 with self.assertRaises(_exn.UnknownClientError) as catcher:303 self.responder(self.response_class.object, self.requests_response.object)304 self.assertEqual(catcher.exception.args, (400, {"__type": "NobodyKnewThisCouldHappen", "Message": "tralala"}))305 def test_unknown_client_error_with_json_without_type(self):306 self.requests_response.expect.status_code.andReturn(400)307 self.requests_response.expect.json().andReturn({"Message": "tralala"})308 with self.assertRaises(_exn.UnknownClientError) as catcher:309 self.responder(self.response_class.object, self.requests_response.object)310 self.assertEqual(catcher.exception.args, (400, {"Message": "tralala"}))311 def test_unknown_client_error_with_non_dict_json(self):312 self.requests_response.expect.status_code.andReturn(400)313 self.requests_response.expect.json().andReturn(["Message", "tralala"])314 with self.assertRaises(_exn.UnknownClientError) as catcher:315 self.responder(self.response_class.object, self.requests_response.object)316 self.assertEqual(catcher.exception.args, (400, ["Message", "tralala"]))317 def test_unknown_client_error_without_json(self):318 self.requests_response.expect.status_code.andReturn(400)319 self.requests_response.expect.json().andRaise(ValueError)320 self.requests_response.expect.text.andReturn("Message: tralala")321 with self.assertRaises(_exn.UnknownClientError) as catcher:322 self.responder(self.response_class.object, self.requests_response.object)323 self.assertEqual(catcher.exception.args, (400, "Message: tralala"))324 def test_server_error_with_correct_json(self):325 self.requests_response.expect.status_code.andReturn(500)326 self.requests_response.expect.json().andReturn({"__type": "NobodyKnewThisCouldHappen", "Message": "tralala"})327 with self.assertRaises(_exn.ServerError) as catcher:328 self.responder(self.response_class.object, self.requests_response.object)329 self.assertEqual(catcher.exception.args, (500, {"__type": "NobodyKnewThisCouldHappen", "Message": "tralala"}))330 def test_server_error_with_json_without_type(self):331 self.requests_response.expect.status_code.andReturn(500)332 self.requests_response.expect.json().andReturn({"Message": "tralala"})333 with self.assertRaises(_exn.ServerError) as catcher:334 self.responder(self.response_class.object, self.requests_response.object)335 self.assertEqual(catcher.exception.args, (500, {"Message": "tralala"}))336 def test_server_error_with_non_dict_json(self):337 self.requests_response.expect.status_code.andReturn(500)338 self.requests_response.expect.json().andReturn(["Message", "tralala"])339 with self.assertRaises(_exn.ServerError) as catcher:340 self.responder(self.response_class.object, self.requests_response.object)341 self.assertEqual(catcher.exception.args, (500, ["Message", "tralala"]))342 def test_server_error_without_json(self):343 self.requests_response.expect.status_code.andReturn(500)344 self.requests_response.expect.json().andRaise(ValueError)345 self.requests_response.expect.text.andReturn("Message: tralala")346 with self.assertRaises(_exn.ServerError) as catcher:347 self.responder(self.response_class.object, self.requests_response.object)348 self.assertEqual(catcher.exception.args, (500, "Message: tralala"))349 def test_unknown_error_with_correct_json(self):350 self.requests_response.expect.status_code.andReturn(750)351 self.requests_response.expect.json().andReturn({"__type": "NobodyKnewThisCouldHappen", "Message": "tralala"})352 with self.assertRaises(_exn.UnknownError) as catcher:353 self.responder(self.response_class.object, self.requests_response.object)354 self.assertEqual(catcher.exception.args, (750, {"__type": "NobodyKnewThisCouldHappen", "Message": "tralala"}))355 def test_unknown_error_with_json_without_type(self):356 self.requests_response.expect.status_code.andReturn(750)357 self.requests_response.expect.json().andReturn({"Message": "tralala"})358 with self.assertRaises(_exn.UnknownError) as catcher:359 self.responder(self.response_class.object, self.requests_response.object)360 self.assertEqual(catcher.exception.args, (750, {"Message": "tralala"}))361 def test_unknown_error_with_non_dict_json(self):362 self.requests_response.expect.status_code.andReturn(750)363 self.requests_response.expect.json().andReturn(["Message", "tralala"])364 with self.assertRaises(_exn.UnknownError) as catcher:365 self.responder(self.response_class.object, self.requests_response.object)366 self.assertEqual(catcher.exception.args, (750, ["Message", "tralala"]))367 def test_unknown_error_without_json(self):368 self.requests_response.expect.status_code.andReturn(750)369 self.requests_response.expect.json().andRaise(ValueError)370 self.requests_response.expect.text.andReturn("Message: tralala")371 with self.assertRaises(_exn.UnknownError) as catcher:372 self.responder(self.response_class.object, self.requests_response.object)373 self.assertEqual(catcher.exception.args, (750, "Message: tralala"))374 def test_known_client_errors(self):375 for type_name, cls in [376 ("xxx.AccessDeniedException", _exn.AccessDeniedException),377 ("xxx.ConditionalCheckFailedException", _exn.ConditionalCheckFailedException),378 ("xxx.IncompleteSignature", _exn.IncompleteSignature),379 ("xxx.InvalidAction", _exn.InvalidAction),380 ("xxx.InvalidClientTokenId", _exn.InvalidClientTokenId),381 ("xxx.InvalidParameterCombination", _exn.InvalidParameterCombination),382 ("xxx.InvalidParameterValue", _exn.InvalidParameterValue),383 ("xxx.InvalidQueryParameter", _exn.InvalidQueryParameter),384 ("xxx.InvalidSignatureException", _exn.InvalidSignatureException),385 ("xxx.ItemCollectionSizeLimitExceededException", _exn.ItemCollectionSizeLimitExceededException),386 ("xxx.LimitExceededException", _exn.LimitExceededException),387 ("xxx.MalformedQueryString", _exn.MalformedQueryString),388 ("xxx.MissingAction", _exn.MissingAction),389 ("xxx.MissingAuthenticationToken", _exn.MissingAuthenticationToken),390 ("xxx.MissingParameter", _exn.MissingParameter),391 ("xxx.OptInRequired", _exn.OptInRequired),392 ("xxx.ProvisionedThroughputExceededException", _exn.ProvisionedThroughputExceededException),393 ("xxx.RequestExpired", _exn.RequestExpired),394 ("xxx.ResourceInUseException", _exn.ResourceInUseException),395 ("xxx.ResourceNotFoundException", _exn.ResourceNotFoundException),396 ("xxx.Throttling", _exn.Throttling),397 ("xxx.ValidationError", _exn.ValidationError),398 ("xxx.ValidationException", _exn.ValidationException),399 ]:400 self.requests_response.expect.status_code.andReturn(400)401 self.requests_response.expect.json().andReturn({"__type": type_name, "Message": "tralala"})402 with self.assertRaises(cls) as catcher:403 self.responder(self.response_class.object, self.requests_response.object)404 def test_different_statuses(self):405 self.requests_response.expect.status_code.andReturn(400)406 self.requests_response.expect.json().andReturn({})407 with self.assertRaises(_exn.ClientError):408 self.responder(self.response_class.object, self.requests_response.object)409 self.requests_response.expect.status_code.andReturn(453)410 self.requests_response.expect.json().andReturn({})411 with self.assertRaises(_exn.ClientError):412 self.responder(self.response_class.object, self.requests_response.object)413 self.requests_response.expect.status_code.andReturn(499)414 self.requests_response.expect.json().andReturn({})415 with self.assertRaises(_exn.ClientError):416 self.responder(self.response_class.object, self.requests_response.object)417 self.requests_response.expect.status_code.andReturn(500)418 self.requests_response.expect.json().andReturn({})419 with self.assertRaises(_exn.ServerError):420 self.responder(self.response_class.object, self.requests_response.object)421 self.requests_response.expect.status_code.andReturn(547)422 self.requests_response.expect.json().andReturn({})423 with self.assertRaises(_exn.ServerError):424 self.responder(self.response_class.object, self.requests_response.object)425 self.requests_response.expect.status_code.andReturn(599)426 self.requests_response.expect.json().andReturn({})427 with self.assertRaises(_exn.ServerError):428 self.responder(self.response_class.object, self.requests_response.object)429 self.requests_response.expect.status_code.andReturn(600)430 self.requests_response.expect.json().andReturn({})431 with self.assertRaises(_exn.UnknownError):432 self.responder(self.response_class.object, self.requests_response.object)433 self.requests_response.expect.status_code.andReturn(612)434 self.requests_response.expect.json().andReturn({})435 with self.assertRaises(_exn.UnknownError):436 self.responder(self.response_class.object, self.requests_response.object)437 self.requests_response.expect.status_code.andReturn(9999)438 self.requests_response.expect.json().andReturn({})439 with self.assertRaises(_exn.UnknownError):...
wCurl.py
Source:wCurl.py
...112 '''113 if resp_from_requests is None:114 response = Response(req_url=req_url)115 else:116 response = from_requests_response(resp_from_requests,req_url)117 return response...
WSCurl.py
Source:WSCurl.py
...63 def _make_response(self, resp_from_requests, req_url):64 if resp_from_requests is None:65 response = WSResponse(req_url=req_url)66 else:67 response = from_requests_response(resp_from_requests, req_url)68 return response69if __name__ == '__main__':70 print("curl test")71 curl = wCurl()72 urlStr = "https://www.paypalm.cn"73 res = curl.get(urlStr)...
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