diff options
Diffstat (limited to 'resources/libraries/python')
| -rw-r--r-- | resources/libraries/python/DropRateSearch.py | 80 | ||||
| -rw-r--r-- | resources/libraries/python/TrafficGenerator.py | 83 |
2 files changed, 104 insertions, 59 deletions
diff --git a/resources/libraries/python/DropRateSearch.py b/resources/libraries/python/DropRateSearch.py index aead532da0..354e7d493c 100644 --- a/resources/libraries/python/DropRateSearch.py +++ b/resources/libraries/python/DropRateSearch.py @@ -102,7 +102,7 @@ class DropRateSearch(object): def get_latency(self): """Return min/avg/max latency. - :return: Latency stats. + :returns: Latency stats. :rtype: list """ pass @@ -122,7 +122,7 @@ class DropRateSearch(object): :type loss_acceptance: float :type loss_acceptance_type: LossAcceptanceType :type traffic_type: str - :return: Drop threshold exceeded? (True/False) + :returns: Drop threshold exceeded? (True/False) :rtype bool """ pass @@ -134,7 +134,8 @@ class DropRateSearch(object): :param min_rate: Lower value of search boundaries. :type max_rate: float :type min_rate: float - :return: nothing + :returns: nothing + :raises: ValueError if min rate is lower than 0 and higher than max rate """ if float(min_rate) <= 0: raise ValueError("min_rate must be higher than 0") @@ -149,7 +150,8 @@ class DropRateSearch(object): :param loss_acceptance: Loss acceptance treshold for PDR search. :type loss_acceptance: str - :return: nothing + :returns: nothing + :raises: ValueError if loss acceptance is lower than zero """ if float(loss_acceptance) < 0: raise ValueError("Loss acceptance must be higher or equal 0") @@ -159,7 +161,7 @@ class DropRateSearch(object): def get_loss_acceptance(self): """Return configured loss acceptance treshold. - :return: Loss acceptance treshold. + :returns: Loss acceptance treshold. :rtype: float """ return self._loss_acceptance @@ -167,14 +169,14 @@ class DropRateSearch(object): def set_loss_acceptance_type_percentage(self): """Set loss acceptance treshold type to percentage. - :return: nothing + :returns: nothing """ self._loss_acceptance_type = LossAcceptanceType.PERCENTAGE def set_loss_acceptance_type_frames(self): """Set loss acceptance treshold type to frames. - :return: nothing + :returns: nothing """ self._loss_acceptance_type = LossAcceptanceType.FRAMES @@ -182,7 +184,7 @@ class DropRateSearch(object): """Return true if loss acceptance treshold type is percentage, false otherwise. - :return: True if loss acceptance treshold type is percentage. + :returns: True if loss acceptance treshold type is percentage. :rtype: boolean """ return self._loss_acceptance_type == LossAcceptanceType.PERCENTAGE @@ -192,28 +194,28 @@ class DropRateSearch(object): :param step_rate: Linear search step size. :type step_rate: float - :return: nothing + :returns: nothing """ self._rate_linear_step = float(step_rate) def set_search_rate_type_percentage(self): """Set rate type to percentage of linerate. - :return: nothing + :returns: nothing """ self._set_search_rate_type(RateType.PERCENTAGE) def set_search_rate_type_bps(self): """Set rate type to bits per second. - :return: nothing + :returns: nothing """ self._set_search_rate_type(RateType.BITS_PER_SECOND) def set_search_rate_type_pps(self): """Set rate type to packets per second. - :return: nothing + :returns: nothing """ self._set_search_rate_type(RateType.PACKETS_PER_SECOND) @@ -222,7 +224,8 @@ class DropRateSearch(object): :param rate_type: Type of rate to set. :type rate_type: RateType - :return: nothing + :returns: nothing + :raises: Exception if rate type is unknown """ if rate_type not in RateType: raise Exception("rate_type unknown: {}".format(rate_type)) @@ -234,7 +237,7 @@ class DropRateSearch(object): :param frame_size: Size of frames. :type frame_size: str - :return: nothing + :returns: nothing """ self._frame_size = frame_size @@ -243,14 +246,14 @@ class DropRateSearch(object): :param duration: Number of seconds for traffic to run. :type duration: int - :return: nothing + :returns: nothing """ self._duration = int(duration) def get_duration(self): """Return configured duration of single traffic run. - :return: Number of seconds for traffic to run. + :returns: Number of seconds for traffic to run. :rtype: int """ return self._duration @@ -260,14 +263,14 @@ class DropRateSearch(object): :param convergence: Treshold value number. :type convergence: float - :return: nothing + :returns: nothing """ self._binary_convergence_threshold = float(convergence) def get_binary_convergence_threshold(self): """Get convergence for binary search. - :return: Treshold value number. + :returns: Treshold value number. :rtype: float """ return self._binary_convergence_threshold @@ -275,8 +278,9 @@ class DropRateSearch(object): def get_rate_type_str(self): """Return rate type representation. - :return: String representation of rate type. + :returns: String representation of rate type. :rtype: str + :raises: ValueError if rate type is unknown """ if self._rate_type == RateType.PERCENTAGE: return "%" @@ -292,17 +296,18 @@ class DropRateSearch(object): :param max_attempts: Number of traffic runs. :type max_attempts: int - :return: nothing + :returns: nothing + :raises: ValueError if max attempts is lower than zero """ if int(max_attempts) > 0: self._max_attempts = int(max_attempts) else: - raise ValueError("Max attempt must by greater then zero") + raise ValueError("Max attempt must by greater than zero") def get_max_attempts(self): """Return maximum number of traffic runs during one rate step. - :return: Number of traffic runs. + :returns: Number of traffic runs. :rtype: int """ return self._max_attempts @@ -310,14 +315,14 @@ class DropRateSearch(object): def set_search_result_type_best_of_n(self): """Set type of search result evaluation to Best of N. - :return: nothing + :returns: nothing """ self._set_search_result_type(SearchResultType.BEST_OF_N) def set_search_result_type_worst_of_n(self): """Set type of search result evaluation to Worst of N. - :return: nothing + :returns: nothing """ self._set_search_result_type(SearchResultType.WORST_OF_N) @@ -326,7 +331,8 @@ class DropRateSearch(object): :param search_type: Type of search result evaluation to set. :type search_type: SearchResultType - :return: nothing + :returns: nothing + :raises: ValueError if search type is unknown """ if search_type not in SearchResultType: raise ValueError("search_type unknown: {}".format(search_type)) @@ -339,7 +345,7 @@ class DropRateSearch(object): :param res_list: List of return values from all runs at one rate step. :type res_list: list - :return: True if at least one run is True, False otherwise. + :returns: True if at least one run is True, False otherwise. :rtype: boolean """ # Return True if any element of the iterable is True. @@ -351,7 +357,7 @@ class DropRateSearch(object): :param res_list: List of return values from all runs at one rate step. :type res_list: list - :return: False if at least one run is False, True otherwise. + :returns: False if at least one run is False, True otherwise. :rtype: boolean """ # Return False if not all elements of the iterable are True. @@ -362,8 +368,9 @@ class DropRateSearch(object): :param res_list: List of return values from all runs at one rate step. :type res_list: list - :return: Boolean based on search result type. + :returns: Boolean based on search result type. :rtype: boolean + :raises: ValueError if search result type is unknown """ if self._search_result_type == SearchResultType.BEST_OF_N: return self._get_best_of_n(res_list) @@ -379,7 +386,8 @@ class DropRateSearch(object): :param traffic_type: Traffic profile. :type start_rate: float :type traffic_type: str - :return: nothing + :returns: nothing + :raises: ValueError if start rate is not in range """ if not self._rate_min <= float(start_rate) <= self._rate_max: @@ -462,8 +470,9 @@ class DropRateSearch(object): def verify_search_result(self): """Fail if search was not successful. - :return: Result rate and latency stats. + :returns: Result rate and latency stats. :rtype: tuple + :raises: Exception if search failed """ if self._search_result == SearchResults.FAILURE: raise Exception('Search FAILED') @@ -482,7 +491,8 @@ class DropRateSearch(object): :type b_max: float :type traffic_type: str :type skip_max_rate: bool - :return: nothing + :returns: nothing + :raises: ValueError if input values are not valid """ if not self._rate_min <= float(b_min) <= self._rate_max: @@ -498,7 +508,7 @@ class DropRateSearch(object): rate = ((float(b_max) - float(b_min)) / 2) + float(b_min) else: # rate is max of interval - rate = float(b_max) + rate = float(b_max) # rate diff with previous run rate_diff = abs(self._last_binary_rate - rate) @@ -536,7 +546,8 @@ class DropRateSearch(object): :param traffic_type: Traffic profile. :type start_rate: float :type traffic_type: str - :return: nothing + :returns: nothing + :raises: RuntimeError if linear search failed """ self.linear_search(start_rate, traffic_type) @@ -583,9 +594,10 @@ class DropRateSearch(object): :type num_b: float :type rel_tol: float :type abs_tol: float - :return: Returns True if num_a is close in value to num_b or equal. + :returns: Returns True if num_a is close in value to num_b or equal. False otherwise. :rtype: boolean + :raises: ValueError if input values are not valid """ if num_a == num_b: diff --git a/resources/libraries/python/TrafficGenerator.py b/resources/libraries/python/TrafficGenerator.py index 307a28f470..87437d8284 100644 --- a/resources/libraries/python/TrafficGenerator.py +++ b/resources/libraries/python/TrafficGenerator.py @@ -34,14 +34,30 @@ class TGDropRateSearchImpl(DropRateSearch): def measure_loss(self, rate, frame_size, loss_acceptance, loss_acceptance_type, traffic_type): - + """Runs the traffic and evaluate the measured results. + + :param rate: Offered traffic load. + :param frame_size: Size of frame. + :param loss_acceptance: Permitted drop ratio or frames count. + :param loss_acceptance_type: Type of permitted loss. + :param traffic_type: Traffic profile ([2,3]-node-L[2,3], ...). + :type rate: int + :type frame_size: str + :type loss_acceptance: float + :type loss_acceptance_type: LossAcceptanceType + :type traffic_type: str + :returns: Drop threshold exceeded? (True/False) + :rtype: bool + :raises: NotImplementedError if TG is not supported. + :raises: RuntimeError if TG is not specified. + """ # we need instance of TrafficGenerator instantiated by Robot Framework # to be able to use trex_stl-*() tg_instance = BuiltIn().get_library_instance( 'resources.libraries.python.TrafficGenerator') if tg_instance._node['subtype'] is None: - raise Exception('TG subtype not defined') + raise RuntimeError('TG subtype not defined') elif tg_instance._node['subtype'] == NodeSubTypeTG.TREX: unit_rate = str(rate) + self.get_rate_type_str() tg_instance.trex_stl_start_remote_exec(self.get_duration(), @@ -52,7 +68,6 @@ class TGDropRateSearchImpl(DropRateSearch): if self.loss_acceptance_type_is_percentage(): loss = (float(loss) / float(sent)) * 100 - # TODO: getters for tg_instance logger.trace("comparing: {} < {} {}".format(loss, loss_acceptance, loss_acceptance_type)) @@ -64,12 +79,11 @@ class TGDropRateSearchImpl(DropRateSearch): raise NotImplementedError("TG subtype not supported") def get_latency(self): - """Return min/avg/max latency. + """Returns min/avg/max latency. - :return: Latency stats. + :returns: Latency stats. :rtype: list """ - tg_instance = BuiltIn().get_library_instance( 'resources.libraries.python.TrafficGenerator') return tg_instance.get_latency_int() @@ -93,7 +107,7 @@ class TrafficGenerator(object): def get_loss(self): """Return number of lost packets. - :return: Number of lost packets. + :returns: Number of lost packets. :rtype: str """ return self._loss @@ -101,7 +115,7 @@ class TrafficGenerator(object): def get_sent(self): """Return number of sent packets. - :return: Number of sent packets. + :returns: Number of sent packets. :rtype: str """ return self._sent @@ -109,7 +123,7 @@ class TrafficGenerator(object): def get_received(self): """Return number of received packets. - :return: Number of received packets. + :returns: Number of received packets. :rtype: str """ return self._received @@ -117,12 +131,11 @@ class TrafficGenerator(object): def get_latency_int(self): """Return rounded min/avg/max latency. - :return: Latency stats. + :returns: Latency stats. :rtype: list """ return self._latency - #pylint: disable=too-many-arguments, too-many-locals def initialize_traffic_generator(self, tg_node, tg_if1, tg_if2, tg_if1_adj_node, tg_if1_adj_if, tg_if2_adj_node, tg_if2_adj_if, @@ -136,7 +149,7 @@ class TrafficGenerator(object): :param tg_if1_adj_if: TG if1 adjecent interface. :param tg_if2_adj_node: TG if2 adjecent node. :param tg_if2_adj_if: TG if2 adjecent interface. - :test_type: 'L2' or 'L3' - src/dst MAC address. + :param test_type: 'L2' or 'L3' - src/dst MAC address. :type tg_node: dict :type tg_if1: str :type tg_if2: str @@ -145,13 +158,14 @@ class TrafficGenerator(object): :type tg_if2_adj_node: dict :type tg_if2_adj_if: str :type test_type: str - :return: nothing + :returns: nothing + :raises: RuntimeError in case of issue during initialization. """ topo = Topology() if tg_node['type'] != NodeType.TG: - raise Exception('Node type is not a TG') + raise RuntimeError('Node type is not a TG') self._node = tg_node if tg_node['subtype'] == NodeSubTypeTG.TREX: @@ -259,10 +273,12 @@ class TrafficGenerator(object): :param node: Traffic generator node. :type node: dict - :return: nothing + :returns: nothing + :raises: RuntimeError if T-rex teardown failed. + :raises: RuntimeError if node type is not a TG. """ if node['type'] != NodeType.TG: - raise Exception('Node type is not a TG') + raise RuntimeError('Node type is not a TG') if node['subtype'] == NodeSubTypeTG.TREX: ssh = SSH() ssh.connect(node) @@ -278,7 +294,8 @@ class TrafficGenerator(object): :param node: T-REX generator node. :type node: dict - :return: Nothing + :returns: Nothing + :raises: RuntimeError if stop traffic script fails. """ ssh = SSH() ssh.connect(node) @@ -312,7 +329,9 @@ class TrafficGenerator(object): :type async_call: bool :type latency: bool :type warmup_time: int - :return: Nothing + :returns: Nothing + :raises: NotImplementedError if traffic type is not supported. + :raises: RuntimeError in case of TG driver issue. """ ssh = SSH() ssh.connect(self._node) @@ -491,9 +510,10 @@ class TrafficGenerator(object): self._latency.append(self._result.split(', ')[5].split('=')[1]) def stop_traffic_on_tg(self): - """Stop all traffic on TG + """Stop all traffic on TG. - :return: Nothing + :returns: Nothing + :raises: RuntimeError if TG is not set. """ if self._node is None: raise RuntimeError("TG is not set") @@ -509,14 +529,21 @@ class TrafficGenerator(object): :param rate: Offered load per interface (e.g. 1%, 3gbps, 4mpps, ...). :param framesize: Frame size (L2) in Bytes. :param traffic_type: Traffic profile. + :param warmup_time: Warmup phase in seconds. + :param async_call: Async mode. :param latency: With latency measurement. :type duration: str :type rate: str :type framesize: str :type traffic_type: str + :type warmup_time: int + :type async_call: bool :type latency: bool - :return: TG output. + :returns: TG output. :rtype: str + :raises: RuntimeError if TG is not set. + :raises: RuntimeError if node is not TG or subtype is not specified. + :raises: NotImplementedError if TG is not supported. """ node = self._node @@ -524,10 +551,10 @@ class TrafficGenerator(object): raise RuntimeError("TG is not set") if node['type'] != NodeType.TG: - raise Exception('Node type is not a TG') + raise RuntimeError('Node type is not a TG') if node['subtype'] is None: - raise Exception('TG subtype not defined') + raise RuntimeError('TG subtype not defined') elif node['subtype'] == NodeSubTypeTG.TREX: self.trex_stl_start_remote_exec(duration, rate, framesize, traffic_type, async_call, latency, @@ -540,7 +567,8 @@ class TrafficGenerator(object): def no_traffic_loss_occurred(self): """Fail if loss occurred in traffic run. - :return: nothing + :returns: nothing + :raises: Exception if loss occured. """ if self._loss is None: raise Exception('The traffic generation has not been issued') @@ -551,7 +579,12 @@ class TrafficGenerator(object): loss_acceptance_type): """Fail if loss is higher then accepted in traffic run. - :return: nothing + :param loss_acceptance: Permitted drop ratio or frames count. + :param loss_acceptance_type: Type of permitted loss. + :type loss_acceptance: float + :type loss_acceptance_type: LossAcceptanceType + :returns: nothing + :raises: Exception if loss is above acceptance criteria. """ if self._loss is None: raise Exception('The traffic generation has not been issued') |