mirror of https://github.com/kubernetes/kops.git
100 lines
2.8 KiB
Go
100 lines
2.8 KiB
Go
/*
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Copyright 2016 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 cloudinstances
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import (
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"fmt"
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"strings"
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"github.com/golang/glog"
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"k8s.io/api/core/v1"
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"k8s.io/kops/pkg/apis/kops"
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api "k8s.io/kops/pkg/apis/kops"
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)
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// CloudInstanceGroup is the cloud backing of InstanceGroup.
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type CloudInstanceGroup struct {
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// HumanName is a user-friendly name for the group
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HumanName string
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InstanceGroup *api.InstanceGroup
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Ready []*CloudInstanceGroupMember
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NeedUpdate []*CloudInstanceGroupMember
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MinSize int
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MaxSize int
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// Raw allows for the implementer to attach an object, for tracking additional state
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Raw interface{}
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}
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// CloudInstanceGroupMember describes an instance in a CloudInstanceGroup group.
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type CloudInstanceGroupMember struct {
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// ID is a unique identifier for the instance, meaningful to the cloud
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ID string
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// Node is the associated k8s instance, if it is known
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Node *v1.Node
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// CloudInstanceGroup is the managing CloudInstanceGroup
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CloudInstanceGroup *CloudInstanceGroup
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}
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// NewCloudInstanceGroupMember creates a new CloudInstanceGroupMember
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func (c *CloudInstanceGroup) NewCloudInstanceGroupMember(instanceId string, newGroupName string, currentGroupName string, nodeMap map[string]*v1.Node) error {
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if instanceId == "" {
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return fmt.Errorf("instance id for cloud instance member cannot be empty")
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}
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cm := &CloudInstanceGroupMember{
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ID: instanceId,
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CloudInstanceGroup: c,
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}
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node := nodeMap[instanceId]
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if node != nil {
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cm.Node = node
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} else {
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glog.V(8).Infof("unable to find node for instance: %s", instanceId)
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}
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if newGroupName == currentGroupName {
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c.Ready = append(c.Ready, cm)
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} else {
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c.NeedUpdate = append(c.NeedUpdate, cm)
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}
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return nil
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}
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// Status returns a human-readable Status indicating whether an update is needed
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func (c *CloudInstanceGroup) Status() string {
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if len(c.NeedUpdate) == 0 {
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return "Ready"
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} else {
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return "NeedsUpdate"
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}
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}
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// GetNodeMap returns a list of nodes keyed by their external id
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func GetNodeMap(nodes []v1.Node, cluster *kops.Cluster) map[string]*v1.Node {
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nodeMap := make(map[string]*v1.Node)
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for i := range nodes {
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node := &nodes[i]
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providerIDs := strings.Split(node.Spec.ProviderID, "/")
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instanceID := providerIDs[len(providerIDs)-1]
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nodeMap[instanceID] = node
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}
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return nodeMap
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}
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