vendor files

vendor/k8s.io/kubernetes/pkg/kubelet/active_deadline.go

@@ -0,0 +1,98 @@
+/*
+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 kubelet
+
+import (
+	"fmt"
+	"time"
+
+	"k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/util/clock"
+	"k8s.io/client-go/tools/record"
+	"k8s.io/kubernetes/pkg/kubelet/lifecycle"
+	"k8s.io/kubernetes/pkg/kubelet/status"
+)
+
+const (
+	reason  = "DeadlineExceeded"
+	message = "Pod was active on the node longer than the specified deadline"
+)
+
+// activeDeadlineHandler knows how to enforce active deadlines on pods.
+type activeDeadlineHandler struct {
+	// the clock to use for deadline enforcement
+	clock clock.Clock
+	// the provider of pod status
+	podStatusProvider status.PodStatusProvider
+	// the recorder to dispatch events when we identify a pod has exceeded active deadline
+	recorder record.EventRecorder
+}
+
+// newActiveDeadlineHandler returns an active deadline handler that can enforce pod active deadline
+func newActiveDeadlineHandler(
+	podStatusProvider status.PodStatusProvider,
+	recorder record.EventRecorder,
+	clock clock.Clock,
+) (*activeDeadlineHandler, error) {
+
+	// check for all required fields
+	if clock == nil || podStatusProvider == nil || recorder == nil {
+		return nil, fmt.Errorf("Required arguments must not be nil: %v, %v, %v", clock, podStatusProvider, recorder)
+	}
+	return &activeDeadlineHandler{
+		clock:             clock,
+		podStatusProvider: podStatusProvider,
+		recorder:          recorder,
+	}, nil
+}
+
+// ShouldSync returns true if the pod is past its active deadline.
+func (m *activeDeadlineHandler) ShouldSync(pod *v1.Pod) bool {
+	return m.pastActiveDeadline(pod)
+}
+
+// ShouldEvict returns true if the pod is past its active deadline.
+// It dispatches an event that the pod should be evicted if it is past its deadline.
+func (m *activeDeadlineHandler) ShouldEvict(pod *v1.Pod) lifecycle.ShouldEvictResponse {
+	if !m.pastActiveDeadline(pod) {
+		return lifecycle.ShouldEvictResponse{Evict: false}
+	}
+	m.recorder.Eventf(pod, v1.EventTypeNormal, reason, message)
+	return lifecycle.ShouldEvictResponse{Evict: true, Reason: reason, Message: message}
+}
+
+// pastActiveDeadline returns true if the pod has been active for more than its ActiveDeadlineSeconds
+func (m *activeDeadlineHandler) pastActiveDeadline(pod *v1.Pod) bool {
+	// no active deadline was specified
+	if pod.Spec.ActiveDeadlineSeconds == nil {
+		return false
+	}
+	// get the latest status to determine if it was started
+	podStatus, ok := m.podStatusProvider.GetPodStatus(pod.UID)
+	if !ok {
+		podStatus = pod.Status
+	}
+	// we have no start time so just return
+	if podStatus.StartTime.IsZero() {
+		return false
+	}
+	// determine if the deadline was exceeded
+	start := podStatus.StartTime.Time
+	duration := m.clock.Since(start)
+	allowedDuration := time.Duration(*pod.Spec.ActiveDeadlineSeconds) * time.Second
+	return duration >= allowedDuration
+}