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Add Status in the runtime Container type

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This is necessary for the generic PLEG to distinguish container events.
This commit is contained in:
Yu-Ju Hong
2015-11-05 18:19:45 -08:00
parent c2dd27615a
commit 3beae6b70b
5 changed files with 87 additions and 25 deletions
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11
pkg/kubelet/container/runtime.go
View File

@@ -198,6 +198,15 @@ func (c *ContainerID) UnmarshalJSON(data []byte) error {
return c.ParseString(string(data))
}
type ContainerStatus string
const (
ContainerStatusRunning ContainerStatus = "running"
ContainerStatusExited ContainerStatus = "exited"
// This unknown encompasses all the statuses that we currently don't care.
ContainerStatusUnknown ContainerStatus = "unknown"
)
// Container provides the runtime information for a container, such as ID, hash,
// status of the container.
type Container struct {
@@ -215,6 +224,8 @@ type Container struct {
// The timestamp of the creation time of the container.
// TODO(yifan): Consider to move it to api.ContainerStatus.
Created int64
// Status is the status of the container.
Status ContainerStatus
}
// Basic information about a container image.

16
pkg/kubelet/dockertools/convert.go
View File

@@ -18,6 +18,7 @@ package dockertools
import (
"fmt"
"strings"
docker "github.com/fsouza/go-dockerclient"
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
@@ -27,6 +28,19 @@ import (
// This file contains helper functions to convert docker API types to runtime
// (kubecontainer) types.
func mapStatus(status string) kubecontainer.ContainerStatus {
// Parse the status string in docker.APIContainers. This could break when
// we upgrade docker.
switch {
case strings.HasPrefix(status, "Up"):
return kubecontainer.ContainerStatusRunning
case strings.HasPrefix(status, "Exited"):
return kubecontainer.ContainerStatusExited
default:
return kubecontainer.ContainerStatusUnknown
}
}
// Converts docker.APIContainers to kubecontainer.Container.
func toRuntimeContainer(c *docker.APIContainers) (*kubecontainer.Container, error) {
if c == nil {
@@ -37,12 +51,14 @@ func toRuntimeContainer(c *docker.APIContainers) (*kubecontainer.Container, erro
if err != nil {
return nil, err
}
return &kubecontainer.Container{
ID: kubetypes.DockerID(c.ID).ContainerID(),
Name: dockerName.ContainerName,
Image: c.Image,
Hash: hash,
Created: c.Created,
Status: mapStatus(c.Status),
}, nil
}

20
pkg/kubelet/dockertools/convert_test.go
View File

@@ -24,12 +24,31 @@ import (
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
)
func TestMapStatus(t *testing.T) {
testCases := []struct {
input string
expected kubecontainer.ContainerStatus
}{
{input: "Up 5 hours", expected: kubecontainer.ContainerStatusRunning},
{input: "Exited (0) 2 hours ago", expected: kubecontainer.ContainerStatusExited},
{input: "Created", expected: kubecontainer.ContainerStatusUnknown},
{input: "Random string", expected: kubecontainer.ContainerStatusUnknown},
}
for i, test := range testCases {
if actual := mapStatus(test.input); actual != test.expected {
t.Errorf("Test[%d]: expected %q, got %q", i, test.expected, actual)
}
}
}
func TestToRuntimeContainer(t *testing.T) {
original := &docker.APIContainers{
ID: "ab2cdf",
Image: "bar_image",
Created: 12345,
Names: []string{"/k8s_bar.5678_foo_ns_1234_42"},
Status: "Up 5 hours",
}
expected := &kubecontainer.Container{
ID: kubecontainer.ContainerID{"docker", "ab2cdf"},
@@ -37,6 +56,7 @@ func TestToRuntimeContainer(t *testing.T) {
Image: "bar_image",
Hash: 0x5678,
Created: 12345,
Status: kubecontainer.ContainerStatusRunning,
}
actual, err := toRuntimeContainer(original)

56
pkg/kubelet/dockertools/docker_test.go
View File

@@ -580,14 +580,16 @@ func TestFindContainersByPod(t *testing.T) {
Namespace: "ns",
Containers: []*kubecontainer.Container{
{
ID: kubetypes.DockerID("foobar").ContainerID(),
Name: "foobar",
Hash: 0x1234,
ID: kubetypes.DockerID("foobar").ContainerID(),
Name: "foobar",
Hash: 0x1234,
Status: kubecontainer.ContainerStatusUnknown,
},
{
ID: kubetypes.DockerID("baz").ContainerID(),
Name: "baz",
Hash: 0x1234,
ID: kubetypes.DockerID("baz").ContainerID(),
Name: "baz",
Hash: 0x1234,
Status: kubecontainer.ContainerStatusUnknown,
},
},
},
@@ -597,9 +599,10 @@ func TestFindContainersByPod(t *testing.T) {
Namespace: "ns",
Containers: []*kubecontainer.Container{
{
ID: kubetypes.DockerID("barbar").ContainerID(),
Name: "barbar",
Hash: 0x1234,
ID: kubetypes.DockerID("barbar").ContainerID(),
Name: "barbar",
Hash: 0x1234,
Status: kubecontainer.ContainerStatusUnknown,
},
},
},
@@ -638,19 +641,22 @@ func TestFindContainersByPod(t *testing.T) {
Namespace: "ns",
Containers: []*kubecontainer.Container{
{
ID: kubetypes.DockerID("foobar").ContainerID(),
Name: "foobar",
Hash: 0x1234,
ID: kubetypes.DockerID("foobar").ContainerID(),
Name: "foobar",
Hash: 0x1234,
Status: kubecontainer.ContainerStatusUnknown,
},
{
ID: kubetypes.DockerID("barfoo").ContainerID(),
Name: "barfoo",
Hash: 0x1234,
ID: kubetypes.DockerID("barfoo").ContainerID(),
Name: "barfoo",
Hash: 0x1234,
Status: kubecontainer.ContainerStatusUnknown,
},
{
ID: kubetypes.DockerID("baz").ContainerID(),
Name: "baz",
Hash: 0x1234,
ID: kubetypes.DockerID("baz").ContainerID(),
Name: "baz",
Hash: 0x1234,
Status: kubecontainer.ContainerStatusUnknown,
},
},
},
@@ -660,9 +666,10 @@ func TestFindContainersByPod(t *testing.T) {
Namespace: "ns",
Containers: []*kubecontainer.Container{
{
ID: kubetypes.DockerID("barbar").ContainerID(),
Name: "barbar",
Hash: 0x1234,
ID: kubetypes.DockerID("barbar").ContainerID(),
Name: "barbar",
Hash: 0x1234,
Status: kubecontainer.ContainerStatusUnknown,
},
},
},
@@ -672,9 +679,10 @@ func TestFindContainersByPod(t *testing.T) {
Namespace: "ns",
Containers: []*kubecontainer.Container{
{
ID: kubetypes.DockerID("bazbaz").ContainerID(),
Name: "bazbaz",
Hash: 0x1234,
ID: kubetypes.DockerID("bazbaz").ContainerID(),
Name: "bazbaz",
Hash: 0x1234,
Status: kubecontainer.ContainerStatusUnknown,
},
},
},

9
pkg/kubelet/rkt/rkt.go
View File

@@ -793,7 +793,14 @@ func (r *Runtime) GetPods(all bool) ([]*kubecontainer.Pod, error) {
var pods []*kubecontainer.Pod
for _, u := range units {
if strings.HasPrefix(u.Name, kubernetesUnitPrefix) {
if !all && u.SubState != "running" {
var status kubecontainer.ContainerStatus
switch {
case u.SubState == "running":
status = kubecontainer.ContainerStatusRunning
default:
status = kubecontainer.ContainerStatusExited
}
if !all && status != kubecontainer.ContainerStatusRunning {
continue
}
pod, _, err := r.readServiceFile(u.Name)