1# Copyright 2018, OpenCensus Authors
2#
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6#
7#     http://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14
15
16class BucketBoundaries(object):
17    """The bucket boundaries for a histogram
18
19    :type boundaries: list(float)
20    :param boundaries: boundaries for the buckets in the underlying histogram
21
22    """
23    def __init__(self, boundaries=None):
24        self._boundaries = list(boundaries or [])
25
26    @property
27    def boundaries(self):
28        """the current boundaries"""
29        return self._boundaries
30
31    def is_valid_boundaries(self, boundaries):
32        """checks if the boundaries are in ascending order"""
33        if boundaries is not None:
34            min_ = boundaries[0]
35            for value in boundaries:
36                if value < min_:
37                    return False
38                else:
39                    min_ = value
40            return True
41        return False
42