Move Ingress godeps to vendor/

vendor/k8s.io/kubernetes/pkg/kubelet/qos/util/qos.go

@@ -0,0 +1,104 @@
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+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 util
+
+import (
+	"k8s.io/kubernetes/pkg/api"
+	"k8s.io/kubernetes/pkg/util/sets"
+)
+
+const (
+	Guaranteed = "Guaranteed"
+	Burstable  = "Burstable"
+	BestEffort = "BestEffort"
+)
+
+// isResourceGuaranteed returns true if the container's resource requirements are Guaranteed.
+func isResourceGuaranteed(container *api.Container, resource api.ResourceName) bool {
+	// A container resource is guaranteed if its request == limit.
+	// If request == limit, the user is very confident of resource consumption.
+	req, hasReq := container.Resources.Requests[resource]
+	limit, hasLimit := container.Resources.Limits[resource]
+	if !hasReq || !hasLimit {
+		return false
+	}
+	return req.Cmp(limit) == 0 && req.Value() != 0
+}
+
+// isResourceBestEffort returns true if the container's resource requirements are best-effort.
+func isResourceBestEffort(container *api.Container, resource api.ResourceName) bool {
+	// A container resource is best-effort if its request is unspecified or 0.
+	// If a request is specified, then the user expects some kind of resource guarantee.
+	req, hasReq := container.Resources.Requests[resource]
+	return !hasReq || req.Value() == 0
+}
+
+// GetPodQos returns the QoS class of a pod.
+// The QoS class of a pod is the lowest QoS class for each resource in each container.
+func GetPodQos(pod *api.Pod) string {
+	qosValues := sets.NewString()
+	for _, container := range pod.Spec.Containers {
+		qosPerResource := GetQoS(&container)
+		for _, qosValue := range qosPerResource {
+			qosValues.Insert(qosValue)
+		}
+	}
+	if qosValues.Has(BestEffort) {
+		return BestEffort
+	}
+	if qosValues.Has(Burstable) {
+		return Burstable
+	}
+	return Guaranteed
+}
+
+// GetQos returns a mapping of resource name to QoS class of a container
+func GetQoS(container *api.Container) map[api.ResourceName]string {
+	resourceToQoS := map[api.ResourceName]string{}
+	for resource := range allResources(container) {
+		switch {
+		case isResourceGuaranteed(container, resource):
+			resourceToQoS[resource] = Guaranteed
+		case isResourceBestEffort(container, resource):
+			resourceToQoS[resource] = BestEffort
+		default:
+			resourceToQoS[resource] = Burstable
+		}
+	}
+	return resourceToQoS
+}
+
+// supportedComputeResources is the list of supported compute resources
+var supportedComputeResources = []api.ResourceName{
+	api.ResourceCPU,
+	api.ResourceMemory,
+}
+
+// allResources returns a set of all possible resources whose mapped key value is true if present on the container
+func allResources(container *api.Container) map[api.ResourceName]bool {
+	resources := map[api.ResourceName]bool{}
+	for _, resource := range supportedComputeResources {
+		resources[resource] = false
+	}
+	for resource := range container.Resources.Requests {
+		resources[resource] = true
+	}
+	for resource := range container.Resources.Limits {
+		resources[resource] = true
+	}
+	return resources
+}