-
Notifications
You must be signed in to change notification settings - Fork 39.2k
/
convert.go
177 lines (157 loc) · 5.26 KB
/
convert.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
/*
Copyright 2016 The Kubernetes Authors.
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.
*/
package dockershim
import (
"fmt"
"strings"
"time"
dockertypes "github.com/docker/docker/api/types"
runtimeapi "k8s.io/kubernetes/pkg/kubelet/apis/cri/v1alpha1/runtime"
"k8s.io/kubernetes/pkg/kubelet/dockershim/libdocker"
)
// This file contains helper functions to convert docker API types to runtime
// API types, or vice versa.
func imageToRuntimeAPIImage(image *dockertypes.ImageSummary) (*runtimeapi.Image, error) {
if image == nil {
return nil, fmt.Errorf("unable to convert a nil pointer to a runtime API image")
}
size := uint64(image.VirtualSize)
return &runtimeapi.Image{
Id: image.ID,
RepoTags: image.RepoTags,
RepoDigests: image.RepoDigests,
Size_: size,
}, nil
}
func imageInspectToRuntimeAPIImage(image *dockertypes.ImageInspect) (*runtimeapi.Image, error) {
if image == nil || image.Config == nil {
return nil, fmt.Errorf("unable to convert a nil pointer to a runtime API image")
}
size := uint64(image.VirtualSize)
runtimeImage := &runtimeapi.Image{
Id: image.ID,
RepoTags: image.RepoTags,
RepoDigests: image.RepoDigests,
Size_: size,
}
uid, username := getUserFromImageUser(image.Config.User)
if uid != nil {
runtimeImage.Uid = &runtimeapi.Int64Value{Value: *uid}
}
runtimeImage.Username = username
return runtimeImage, nil
}
func toPullableImageID(id string, image *dockertypes.ImageInspect) string {
// Default to the image ID, but if RepoDigests is not empty, use
// the first digest instead.
imageID := DockerImageIDPrefix + id
if len(image.RepoDigests) > 0 {
imageID = DockerPullableImageIDPrefix + image.RepoDigests[0]
}
return imageID
}
func toRuntimeAPIContainer(c *dockertypes.Container) (*runtimeapi.Container, error) {
state := toRuntimeAPIContainerState(c.Status)
if len(c.Names) == 0 {
return nil, fmt.Errorf("unexpected empty container name: %+v", c)
}
metadata, err := parseContainerName(c.Names[0])
if err != nil {
return nil, err
}
labels, annotations := extractLabels(c.Labels)
sandboxID := c.Labels[sandboxIDLabelKey]
// The timestamp in dockertypes.Container is in seconds.
createdAt := c.Created * int64(time.Second)
return &runtimeapi.Container{
Id: c.ID,
PodSandboxId: sandboxID,
Metadata: metadata,
Image: &runtimeapi.ImageSpec{Image: c.Image},
ImageRef: c.ImageID,
State: state,
CreatedAt: createdAt,
Labels: labels,
Annotations: annotations,
}, nil
}
func toDockerContainerStatus(state runtimeapi.ContainerState) string {
switch state {
case runtimeapi.ContainerState_CONTAINER_CREATED:
return "created"
case runtimeapi.ContainerState_CONTAINER_RUNNING:
return "running"
case runtimeapi.ContainerState_CONTAINER_EXITED:
return "exited"
case runtimeapi.ContainerState_CONTAINER_UNKNOWN:
fallthrough
default:
return "unknown"
}
}
func toRuntimeAPIContainerState(state string) runtimeapi.ContainerState {
// Parse the state string in dockertypes.Container. This could break when
// we upgrade docker.
switch {
case strings.HasPrefix(state, libdocker.StatusRunningPrefix):
return runtimeapi.ContainerState_CONTAINER_RUNNING
case strings.HasPrefix(state, libdocker.StatusExitedPrefix):
return runtimeapi.ContainerState_CONTAINER_EXITED
case strings.HasPrefix(state, libdocker.StatusCreatedPrefix):
return runtimeapi.ContainerState_CONTAINER_CREATED
default:
return runtimeapi.ContainerState_CONTAINER_UNKNOWN
}
}
func toRuntimeAPISandboxState(state string) runtimeapi.PodSandboxState {
// Parse the state string in dockertypes.Container. This could break when
// we upgrade docker.
switch {
case strings.HasPrefix(state, libdocker.StatusRunningPrefix):
return runtimeapi.PodSandboxState_SANDBOX_READY
default:
return runtimeapi.PodSandboxState_SANDBOX_NOTREADY
}
}
func containerToRuntimeAPISandbox(c *dockertypes.Container) (*runtimeapi.PodSandbox, error) {
state := toRuntimeAPISandboxState(c.Status)
if len(c.Names) == 0 {
return nil, fmt.Errorf("unexpected empty sandbox name: %+v", c)
}
metadata, err := parseSandboxName(c.Names[0])
if err != nil {
return nil, err
}
labels, annotations := extractLabels(c.Labels)
// The timestamp in dockertypes.Container is in seconds.
createdAt := c.Created * int64(time.Second)
return &runtimeapi.PodSandbox{
Id: c.ID,
Metadata: metadata,
State: state,
CreatedAt: createdAt,
Labels: labels,
Annotations: annotations,
}, nil
}
func checkpointToRuntimeAPISandbox(id string, checkpoint *PodSandboxCheckpoint) *runtimeapi.PodSandbox {
state := runtimeapi.PodSandboxState_SANDBOX_NOTREADY
return &runtimeapi.PodSandbox{
Id: id,
Metadata: &runtimeapi.PodSandboxMetadata{
Name: checkpoint.Name,
Namespace: checkpoint.Namespace,
},
State: state,
}
}