ce62f3d4a0
For containers that don't have bash, we should support env substitution like we do on command and args. However, without major refactoring valueFrom is not supportable from inside the prober. For now, implement substitution based on hardcoded env and leave TODOs for future work.
149 lines
3.9 KiB
Go
149 lines
3.9 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package prober
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import (
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"reflect"
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"sync"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/client-go/tools/record"
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"k8s.io/kubernetes/pkg/api/v1"
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"k8s.io/kubernetes/pkg/client/clientset_generated/clientset/fake"
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kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
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kubepod "k8s.io/kubernetes/pkg/kubelet/pod"
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"k8s.io/kubernetes/pkg/kubelet/prober/results"
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"k8s.io/kubernetes/pkg/kubelet/status"
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statustest "k8s.io/kubernetes/pkg/kubelet/status/testing"
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"k8s.io/kubernetes/pkg/probe"
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"k8s.io/kubernetes/pkg/util/exec"
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)
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const (
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testContainerName = "cOnTaInEr_NaMe"
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testPodUID = "pOd_UiD"
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)
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var testContainerID = kubecontainer.ContainerID{Type: "test", ID: "cOnTaInEr_Id"}
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func getTestRunningStatus() v1.PodStatus {
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containerStatus := v1.ContainerStatus{
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Name: testContainerName,
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ContainerID: testContainerID.String(),
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}
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containerStatus.State.Running = &v1.ContainerStateRunning{StartedAt: metav1.Now()}
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podStatus := v1.PodStatus{
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Phase: v1.PodRunning,
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ContainerStatuses: []v1.ContainerStatus{containerStatus},
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}
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return podStatus
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}
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func getTestPod() *v1.Pod {
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container := v1.Container{
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Name: testContainerName,
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}
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pod := v1.Pod{
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Spec: v1.PodSpec{
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Containers: []v1.Container{container},
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RestartPolicy: v1.RestartPolicyNever,
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},
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}
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pod.Name = "testPod"
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pod.UID = testPodUID
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return &pod
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}
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func setTestProbe(pod *v1.Pod, probeType probeType, probeSpec v1.Probe) {
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// All tests rely on the fake exec prober.
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probeSpec.Handler = v1.Handler{
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Exec: &v1.ExecAction{},
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}
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// Apply test defaults, overwridden for test speed.
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defaults := map[string]int64{
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"TimeoutSeconds": 1,
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"PeriodSeconds": 1,
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"SuccessThreshold": 1,
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"FailureThreshold": 1,
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}
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for field, value := range defaults {
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f := reflect.ValueOf(&probeSpec).Elem().FieldByName(field)
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if f.Int() == 0 {
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f.SetInt(value)
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}
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}
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switch probeType {
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case readiness:
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pod.Spec.Containers[0].ReadinessProbe = &probeSpec
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case liveness:
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pod.Spec.Containers[0].LivenessProbe = &probeSpec
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}
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}
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func newTestManager() *manager {
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refManager := kubecontainer.NewRefManager()
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refManager.SetRef(testContainerID, &v1.ObjectReference{}) // Suppress prober warnings.
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podManager := kubepod.NewBasicPodManager(nil, nil)
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// Add test pod to pod manager, so that status manager can get the pod from pod manager if needed.
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podManager.AddPod(getTestPod())
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m := NewManager(
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status.NewManager(&fake.Clientset{}, podManager, &statustest.FakePodDeletionSafetyProvider{}),
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results.NewManager(),
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nil, // runner
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refManager,
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&record.FakeRecorder{},
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).(*manager)
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// Don't actually execute probes.
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m.prober.exec = fakeExecProber{probe.Success, nil}
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return m
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}
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func newTestWorker(m *manager, probeType probeType, probeSpec v1.Probe) *worker {
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pod := getTestPod()
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setTestProbe(pod, probeType, probeSpec)
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return newWorker(m, probeType, pod, pod.Spec.Containers[0])
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}
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type fakeExecProber struct {
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result probe.Result
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err error
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}
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func (p fakeExecProber) Probe(c exec.Cmd) (probe.Result, string, error) {
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return p.result, "", p.err
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}
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type syncExecProber struct {
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sync.RWMutex
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fakeExecProber
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}
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func (p *syncExecProber) set(result probe.Result, err error) {
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p.Lock()
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defer p.Unlock()
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p.result = result
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p.err = err
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}
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func (p *syncExecProber) Probe(cmd exec.Cmd) (probe.Result, string, error) {
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p.RLock()
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defer p.RUnlock()
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return p.fakeExecProber.Probe(cmd)
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}
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