1#    Copyright 2015 ARM Limited
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
16from devlib.instrument import MeasurementType, MEASUREMENT_TYPES
17
18
19class DerivedMetric(object):
20
21    __slots__ = ['name', 'value', 'measurement_type']
22
23    @property
24    def units(self):
25        return self.measurement_type.units
26
27    def __init__(self, name, value, measurement_type):
28        self.name = name
29        self.value = value
30        if isinstance(measurement_type, MeasurementType):
31            self.measurement_type = measurement_type
32        else:
33            try:
34                self.measurement_type = MEASUREMENT_TYPES[measurement_type]
35            except KeyError:
36                msg = 'Unknown measurement type:  {}'
37                raise ValueError(msg.format(measurement_type))
38
39    def __cmp__(self, other):
40        if hasattr(other, 'value'):
41            return cmp(self.value, other.value)
42        else:
43            return cmp(self.value, other)
44
45    def __str__(self):
46        if self.units:
47            return '{}: {} {}'.format(self.name, self.value, self.units)
48        else:
49            return '{}: {}'.format(self.name, self.value)
50
51    __repr__ = __str__
52
53
54class DerivedMeasurements(object):
55
56    def process(self, measurements_csv):
57        return []
58
59    def process_raw(self, *args):
60        return []
61