blob: 5318ec1fa0c4c1f8f8ae4f291fc97bd1a2150d60 (
plain)
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
|
package specutils
import (
specs "github.com/opencontainers/runtime-spec/specs-go"
)
const (
// ContainerdContainerTypeAnnotation is the OCI annotation set by
// containerd to indicate whether the container to create should have
// its own sandbox or a container within an existing sandbox.
ContainerdContainerTypeAnnotation = "io.kubernetes.cri.container-type"
// ContainerdContainerTypeContainer is the container type value
// indicating the container should be created in an existing sandbox.
ContainerdContainerTypeContainer = "container"
// ContainerdContainerTypeSandbox is the container type value
// indicating the container should be created in a new sandbox.
ContainerdContainerTypeSandbox = "sandbox"
// ContainerdSandboxIDAnnotation is the OCI annotation set to indicate
// which sandbox the container should be created in when the container
// is not the first container in the sandbox.
ContainerdSandboxIDAnnotation = "io.kubernetes.cri.sandbox-id"
// CRIOContainerTypeAnnotation is the OCI annotation set by
// CRI-O to indicate whether the container to create should have
// its own sandbox or a container within an existing sandbox.
CRIOContainerTypeAnnotation = "io.kubernetes.cri-o.ContainerType"
// CRIOContainerTypeContainer is the container type value
// indicating the container should be created in an existing sandbox.
CRIOContainerTypeContainer = "container"
// CRIOContainerTypeSandbox is the container type value
// indicating the container should be created in a new sandbox.
CRIOContainerTypeSandbox = "sandbox"
// CRIOSandboxIDAnnotation is the OCI annotation set to indicate
// which sandbox the container should be created in when the container
// is not the first container in the sandbox.
CRIOSandboxIDAnnotation = "io.kubernetes.cri-o.SandboxID"
)
// ContainerType represents the type of container requested by the calling container manager.
type ContainerType int
const (
// ContainerTypeUnspecified indicates that no known container type
// annotation was found in the spec.
ContainerTypeUnspecified ContainerType = iota
// ContainerTypeUnknown indicates that a container type was specified
// but is unknown to us.
ContainerTypeUnknown
// ContainerTypeSandbox indicates that the container should be run in a
// new sandbox.
ContainerTypeSandbox
// ContainerTypeContainer indicates that the container should be run in
// an existing sandbox.
ContainerTypeContainer
)
// SpecContainerType tries to determine the type of container specified by the
// container manager using well-known container annotations.
func SpecContainerType(spec *specs.Spec) ContainerType {
if t, ok := spec.Annotations[ContainerdContainerTypeAnnotation]; ok {
switch t {
case ContainerdContainerTypeSandbox:
return ContainerTypeSandbox
case ContainerdContainerTypeContainer:
return ContainerTypeContainer
default:
return ContainerTypeUnknown
}
}
if t, ok := spec.Annotations[CRIOContainerTypeAnnotation]; ok {
switch t {
case CRIOContainerTypeSandbox:
return ContainerTypeSandbox
case CRIOContainerTypeContainer:
return ContainerTypeContainer
default:
return ContainerTypeUnknown
}
}
return ContainerTypeUnspecified
}
// SandboxID returns the ID of the sandbox to join and whether an ID was found
// in the spec.
func SandboxID(spec *specs.Spec) (string, bool) {
if id, ok := spec.Annotations[ContainerdSandboxIDAnnotation]; ok {
return id, true
}
if id, ok := spec.Annotations[CRIOSandboxIDAnnotation]; ok {
return id, true
}
return "", false
}
|
