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Get machine stats from cAdvisor

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This commit is contained in:
Nan Deng
2014-07-01 14:05:10 -07:00
parent 94e1d26992
commit 42fd4383a1
4 changed files with 191 additions and 54 deletions
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66
pkg/kubelet/kubelet_test.go
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@@ -892,12 +892,55 @@ func TestGetContainerStats(t *testing.T) {
kubelet.CadvisorClient = mockCadvisor
fakeDocker.containerList = []docker.APIContainers{
{
Names: []string{"foo"},
ID: containerID,
ID: containerID,
// pod id: qux
// container id: foo
Names: []string{"/k8s--foo--qux--1234"},
},
}
stats, err := kubelet.GetContainerStats("foo")
stats, err := kubelet.GetContainerStats("qux", "foo")
if err != nil {
t.Errorf("unexpected error: %v", err)
}
if stats.MaxMemoryUsage != containerInfo.StatsPercentiles.MaxMemoryUsage {
t.Errorf("wrong max memory usage")
}
areSamePercentiles(containerInfo.StatsPercentiles.CpuUsagePercentiles, stats.CpuUsagePercentiles, t)
areSamePercentiles(containerInfo.StatsPercentiles.MemoryUsagePercentiles, stats.MemoryUsagePercentiles, t)
mockCadvisor.AssertExpectations(t)
}
func TestGetMachineStats(t *testing.T) {
containerPath := "/"
containerInfo := &info.ContainerInfo{
ContainerReference: info.ContainerReference{
Name: containerPath,
}, StatsPercentiles: &info.ContainerStatsPercentiles{MaxMemoryUsage: 1024000, MemoryUsagePercentiles: []info.Percentile{{50, 100}, {80, 180},
{90, 190},
},
CpuUsagePercentiles: []info.Percentile{
{51, 101},
{81, 181},
{91, 191},
},
},
}
fakeDocker := FakeDockerClient{
err: nil,
}
mockCadvisor := &mockCadvisorClient{}
mockCadvisor.On("ContainerInfo", containerPath).Return(containerInfo, nil)
kubelet := Kubelet{
DockerClient: &fakeDocker,
DockerPuller: &FakeDockerPuller{},
CadvisorClient: mockCadvisor,
}
// If the container name is an empty string, then it means the root container.
stats, err := kubelet.GetMachineStats()
if err != nil {
t.Errorf("unexpected error: %v", err)
}
@@ -913,11 +956,14 @@ func TestGetContainerStatsWithoutCadvisor(t *testing.T) {
kubelet, _, fakeDocker := makeTestKubelet(t)
fakeDocker.containerList = []docker.APIContainers{
{
Names: []string{"foo"},
ID: "foobar",
// pod id: qux
// container id: foo
Names: []string{"/k8s--foo--qux--1234"},
},
}
stats, _ := kubelet.GetContainerStats("foo")
stats, _ := kubelet.GetContainerStats("qux", "foo")
// When there's no cAdvisor, the stats should be either nil or empty
if stats == nil {
return
@@ -946,12 +992,14 @@ func TestGetContainerStatsWhenCadvisorFailed(t *testing.T) {
kubelet.CadvisorClient = mockCadvisor
fakeDocker.containerList = []docker.APIContainers{
{
Names: []string{"foo"},
ID: containerID,
ID: containerID,
// pod id: qux
// container id: foo
Names: []string{"/k8s--foo--qux--1234"},
},
}
stats, err := kubelet.GetContainerStats("foo")
stats, err := kubelet.GetContainerStats("qux", "foo")
if stats != nil {
t.Errorf("non-nil stats on error")
}
@@ -972,7 +1020,7 @@ func TestGetContainerStatsOnNonExistContainer(t *testing.T) {
kubelet.CadvisorClient = mockCadvisor
fakeDocker.containerList = []docker.APIContainers{}
stats, _ := kubelet.GetContainerStats("foo")
stats, _ := kubelet.GetContainerStats("qux", "foo")
if stats != nil {
t.Errorf("non-nil stats on non exist container")
}