feat(MLRsearch): MLRsearch v7

Replaces MLRv2, suitable for "big bang" upgrade across CSIT.
PyPI metadata updated only partially (full edits will come separately).
Pylint wants less complexity, but the differences are only minor.

+ Use the same (new CSIT) defaults everywhere, also in Python library.
+ Update also PLRsearch to use the new result class.
+ Make upper bound optional in UTI.
+ Fix ASTF approximate duration detection.
+ Do not keep approximated_receive_rate (for MRR) in result structure.

Change-Id: I03406f32d5c93f56b527cb3f93791b61955dfd74
Signed-off-by: Vratko Polak <vrpolak@cisco.com>

1 files changed, 55 insertions, 0 deletions

diff --git a/resources/libraries/python/MLRsearch/trial_measurement/abstract_measurer.py b/resources/libraries/python/MLRsearch/trial_measurement/abstract_measurer.py
new file mode 100644
index 0000000000..6fab79c8dc
--- /dev/null
+++ b/resources/libraries/python/MLRsearch/trial_measurement/abstract_measurer.py
@@ -0,0 +1,55 @@
+# Copyright (c) 2023 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Module defining AbstractMeasurer class."""
+
+from abc import ABCMeta, abstractmethod
+
+from .measurement_result import MeasurementResult as Result
+
+
+class AbstractMeasurer(metaclass=ABCMeta):
+    """Abstract class defining common API for trial measurement providers.
+
+    The original use of this class was in the realm of
+    RFC 2544 Throughput search, which explains the teminology
+    related to networks, frames, packets, offered load, forwarding rate
+    and similar.
+
+    But the same logic can be used in higher level networking scenarios
+    (e.g. https requests) or even outside networking (database transactions).
+
+    The current code uses language from packet forwarding,
+    docstring sometimes mention transactions as an alternative view.
+    """
+
+    @abstractmethod
+    def measure(self, intended_duration: float, intended_load: float) -> Result:
+        """Perform trial measurement and return the result.
+
+        It is assumed the measurer got already configured with anything else
+        needed to perform the measurement (e.g. traffic profile
+        or transaction limit).
+
+        Duration and load are the only values expected to vary
+        during the search.
+
+        :param intended_duration: Intended trial duration [s].
+        :param intended_load: Intended rate of transactions (packets) [tps].
+            It is a per-port rate, e.g. uni-directional for SUTs
+            with two ports.
+        :type intended_duration: float
+        :type intended_load: float
+        :returns: Structure detailing the result of the measurement.
+        :rtype: measurement_result.MeasurementResult
+        """