1/*
2   Copyright The containerd Authors.
3
4   Licensed under the Apache License, Version 2.0 (the "License");
5   you may not use this file except in compliance with the License.
6   You may obtain a copy of the License at
7
8       http://www.apache.org/licenses/LICENSE-2.0
9
10   Unless required by applicable law or agreed to in writing, software
11   distributed under the License is distributed on an "AS IS" BASIS,
12   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   See the License for the specific language governing permissions and
14   limitations under the License.
15*/
16
17package v2
18
19import "fmt"
20
21type IOType string
22
23const (
24	ReadBPS   IOType = "rbps"
25	WriteBPS  IOType = "wbps"
26	ReadIOPS  IOType = "riops"
27	WriteIOPS IOType = "wiops"
28)
29
30type BFQ struct {
31	Weight uint16
32}
33
34type Entry struct {
35	Type  IOType
36	Major int64
37	Minor int64
38	Rate  uint64
39}
40
41func (e Entry) String() string {
42	return fmt.Sprintf("%d:%d %s=%d", e.Major, e.Minor, e.Type, e.Rate)
43}
44
45type IO struct {
46	BFQ BFQ
47	Max []Entry
48}
49
50func (i *IO) Values() (o []Value) {
51	if i.BFQ.Weight != 0 {
52		o = append(o, Value{
53			filename: "io.bfq.weight",
54			value:    i.BFQ.Weight,
55		})
56	}
57	for _, e := range i.Max {
58		o = append(o, Value{
59			filename: "io.max",
60			value:    e.String(),
61		})
62	}
63	return o
64}
65