68 lines
2.1 KiB
Go
68 lines
2.1 KiB
Go
/*
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Copyright 2019 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package packet
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import (
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"fmt"
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"io"
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"os"
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"k8s.io/autoscaler/cluster-autoscaler/cloudprovider"
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"k8s.io/autoscaler/cluster-autoscaler/config"
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schedulerframework "k8s.io/kubernetes/pkg/scheduler/framework/v1alpha1"
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)
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const (
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defaultManager = "rest"
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)
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// NodeRef stores the name, machineID and providerID of a node.
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type NodeRef struct {
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Name string
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MachineID string
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ProviderID string
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IPs []string
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}
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// packetManager is an interface for the basic interactions with the cluster.
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type packetManager interface {
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nodeGroupSize(nodegroup string) (int, error)
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createNodes(nodegroup string, nodes int) error
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getNodes(nodegroup string) ([]string, error)
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getNodeNames(nodegroup string) ([]string, error)
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deleteNodes(nodegroup string, nodes []NodeRef, updatedNodeCount int) error
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templateNodeInfo(nodegroup string) (*schedulerframework.NodeInfo, error)
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}
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// createPacketManager creates the desired implementation of packetManager.
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// Currently reads the environment variable PACKET_MANAGER to find which to create,
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// and falls back to a default if the variable is not found.
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func createPacketManager(configReader io.Reader, discoverOpts cloudprovider.NodeGroupDiscoveryOptions, opts config.AutoscalingOptions) (packetManager, error) {
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// For now get manager from env var, can consider adding flag later
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manager, ok := os.LookupEnv("PACKET_MANAGER")
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if !ok {
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manager = defaultManager
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}
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switch manager {
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case "rest":
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return createPacketManagerRest(configReader, discoverOpts, opts)
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}
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return nil, fmt.Errorf("packet manager does not exist: %s", manager)
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}
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