Move Ingress godeps to vendor/

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

@@ -0,0 +1,25 @@
+/*
+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 qos contains helper functions for quality of service.
+// For each resource (memory, CPU) Kubelet supports three classes of containers.
+// Memory guaranteed containers will receive the highest priority and will get all the resources
+// they need.
+// Burstable containers will be guaranteed their request and can “burst” and use more resources
+// when available.
+// Best-Effort containers, which don’t specify a request, can use resources only if not being used
+// by other pods.
+package qos

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

@@ -0,0 +1,75 @@
+/*
+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 qos
+
+import (
+	"k8s.io/kubernetes/pkg/api"
+)
+
+const (
+	PodInfraOOMAdj       int = -999
+	KubeletOOMScoreAdj   int = -999
+	KubeProxyOOMScoreAdj int = -999
+)
+
+// isMemoryBestEffort returns true if the container's memory requirements are best-effort.
+func isMemoryBestEffort(container *api.Container) bool {
+	// A container is memory best-effort if its memory request is unspecified or 0.
+	// If a request is specified, then the user expects some kind of resource guarantee.
+	return container.Resources.Requests.Memory().Value() == 0
+}
+
+// isMemoryGuaranteed returns true if the container's memory requirements are Guaranteed.
+func isMemoryGuaranteed(container *api.Container) bool {
+	// A container is memory guaranteed if its memory request == memory limit.
+	// If memory request == memory limit, the user is very confident of resource consumption.
+	memoryRequest := container.Resources.Requests.Memory()
+	memoryLimit := container.Resources.Limits.Memory()
+	return (*memoryRequest).Cmp(*memoryLimit) == 0 && memoryRequest.Value() != 0
+}
+
+// GetContainerOOMAdjust returns the amount by which the OOM score of all processes in the
+// container should be adjusted. The OOM score of a process is the percentage of memory it consumes
+// multiplied by 10 (barring exceptional cases) + a configurable quantity which is between -1000
+// and 1000. Containers with higher OOM scores are killed if the system runs out of memory.
+// See https://lwn.net/Articles/391222/ for more information.
+func GetContainerOOMScoreAdjust(container *api.Container, memoryCapacity int64) int {
+	if isMemoryGuaranteed(container) {
+		// Memory guaranteed containers should be the last to get killed.
+		return -999
+	} else if isMemoryBestEffort(container) {
+		// Memory best-effort containers should be the first to be killed.
+		return 1000
+	} else {
+		// Burstable containers are a middle tier, between Guaranteed and Best-Effort. Ideally,
+		// we want to protect Burstable containers that consume less memory than requested.
+		// The formula below is a heuristic. A container requesting for 10% of a system's
+		// memory will have an oom score adjust of 900. If a process in container Y
+		// uses over 10% of memory, its OOM score will be 1000. The idea is that containers
+		// which use more than their request will have an OOM score of 1000 and will be prime
+		// targets for OOM kills.
+		// Note that this is a heuristic, it won't work if a container has many small processes.
+		memoryRequest := container.Resources.Requests.Memory().Value()
+		oomScoreAdjust := 1000 - (1000*memoryRequest)/memoryCapacity
+		// A memory guaranteed container using 100% of memory can have an OOM score of 1. Ensure
+		// that memory burstable containers have a higher OOM score.
+		if oomScoreAdjust < 2 {
+			return 2
+		}
+		return int(oomScoreAdjust)
+	}
+}

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
+}