Add Topology Manager Interfaces

*Topology Manager
*Policy

pkg/kubelet/cm/topologymanager/policy.go

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+/*Copyright 2019 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 topologymanager
+
+import (
+	"k8s.io/kubernetes/pkg/kubelet/lifecycle"
+)
+
+//Policy interface for Topology Manager Pod Admit Result
+type Policy interface {
+	//Returns Policy Name
+	Name() string
+	//Returns Pod Admit Handler Response based on hints and policy type
+	CanAdmitPodResult(result TopologyHints) lifecycle.PodAdmitResult
+}

pkg/kubelet/cm/topologymanager/topology_manager.go

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+/*Copyright 2019 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 topologymanager
+
+import (
+	"github.com/golang/glog"
+	"k8s.io/api/core/v1"
+	"k8s.io/kubernetes/pkg/kubelet/cm/topologymanager/socketmask"
+	"k8s.io/kubernetes/pkg/kubelet/lifecycle"
+)
+
+//Manager interface provides methods for Kubelet to manage pod topology hints
+type Manager interface {
+	//Manager implements pod admit handler interface
+	lifecycle.PodAdmitHandler
+	//Adds a hint provider to manager to indicate the hint provider
+	//wants to be consoluted when making topology hints
+	AddHintProvider(HintProvider)
+	//Adds pod to Manager for tracking
+	AddPod(pod *v1.Pod, containerID string) error
+	//Removes pod from Manager tracking
+	RemovePod(containerID string) error
+	//Interface for storing pod topology hints
+	Store
+}
+
+//Interface to be implemented by Hint Providers
+type HintProvider interface {
+	GetTopologyHints(pod v1.Pod, container v1.Container) TopologyHints
+}
+
+//Interface to allow Hint Providers to retrieve pod affinity
+type Store interface {
+	GetAffinity(podUID string, containerName string) TopologyHints
+}