Setup windows container config to kubelet CRI

pkg/kubelet/kuberuntime/kuberuntime_container_linux.go

@@ -0,0 +1,74 @@
+// +build linux
+
+/*
+Copyright 2018 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 kuberuntime
+
+import (
+	"k8s.io/api/core/v1"
+	runtimeapi "k8s.io/kubernetes/pkg/kubelet/apis/cri/runtime/v1alpha2"
+	"k8s.io/kubernetes/pkg/kubelet/qos"
+)
+
+// applyPlatformSpecificContainerConfig applies platform specific configurations to runtimeapi.ContainerConfig.
+func (m *kubeGenericRuntimeManager) applyPlatformSpecificContainerConfig(config *runtimeapi.ContainerConfig, container *v1.Container, pod *v1.Pod, uid *int64, username string) error {
+	config.Linux = m.generateLinuxContainerConfig(container, pod, uid, username)
+	return nil
+}
+
+// generateLinuxContainerConfig generates linux container config for kubelet runtime v1.
+func (m *kubeGenericRuntimeManager) generateLinuxContainerConfig(container *v1.Container, pod *v1.Pod, uid *int64, username string) *runtimeapi.LinuxContainerConfig {
+	lc := &runtimeapi.LinuxContainerConfig{
+		Resources:       &runtimeapi.LinuxContainerResources{},
+		SecurityContext: m.determineEffectiveSecurityContext(pod, container, uid, username),
+	}
+
+	// set linux container resources
+	var cpuShares int64
+	cpuRequest := container.Resources.Requests.Cpu()
+	cpuLimit := container.Resources.Limits.Cpu()
+	memoryLimit := container.Resources.Limits.Memory().Value()
+	oomScoreAdj := int64(qos.GetContainerOOMScoreAdjust(pod, container,
+		int64(m.machineInfo.MemoryCapacity)))
+	// If request is not specified, but limit is, we want request to default to limit.
+	// API server does this for new containers, but we repeat this logic in Kubelet
+	// for containers running on existing Kubernetes clusters.
+	if cpuRequest.IsZero() && !cpuLimit.IsZero() {
+		cpuShares = milliCPUToShares(cpuLimit.MilliValue())
+	} else {
+		// if cpuRequest.Amount is nil, then milliCPUToShares will return the minimal number
+		// of CPU shares.
+		cpuShares = milliCPUToShares(cpuRequest.MilliValue())
+	}
+	lc.Resources.CpuShares = cpuShares
+	if memoryLimit != 0 {
+		lc.Resources.MemoryLimitInBytes = memoryLimit
+	}
+	// Set OOM score of the container based on qos policy. Processes in lower-priority pods should
+	// be killed first if the system runs out of memory.
+	lc.Resources.OomScoreAdj = oomScoreAdj
+
+	if m.cpuCFSQuota {
+		// if cpuLimit.Amount is nil, then the appropriate default value is returned
+		// to allow full usage of cpu resource.
+		cpuQuota, cpuPeriod := milliCPUToQuota(cpuLimit.MilliValue())
+		lc.Resources.CpuQuota = cpuQuota
+		lc.Resources.CpuPeriod = cpuPeriod
+	}
+
+	return lc
+}