143 lines
3.4 KiB
Go
143 lines
3.4 KiB
Go
/*
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Copyright 2020 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 cloudstack
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import (
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"sync"
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"k8s.io/autoscaler/cluster-autoscaler/cloudprovider/cloudstack/service"
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v1 "k8s.io/api/core/v1"
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klog "k8s.io/klog/v2"
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)
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type manager struct {
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asg *asg
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mux sync.Mutex
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service service.CKSService
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clusterConfig *clusterConfig
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}
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type clusterConfig struct {
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clusterID string
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minSize int
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maxSize int
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}
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// CSConfig wraps the config for the CloudStack cloud provider.
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type CSConfig struct {
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Global struct {
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APIURL string `gcfg:"api-url"`
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APIKey string `gcfg:"api-key"`
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SecretKey string `gcfg:"secret-key"`
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SSLNoVerify bool `gcfg:"ssl-no-verify"`
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ProjectID string `gcfg:"project-id"`
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Zone string `gcfg:"zone"`
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}
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}
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func (manager *manager) clusterForNode(node *v1.Node) (*asg, error) {
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_, err := manager.asg.Belongs(node)
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if err != nil {
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return nil, err
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}
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return manager.asg, nil
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}
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func (manager *manager) refresh() error {
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return manager.fetchCluster()
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}
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func (manager *manager) cleanup() error {
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manager.service.Close()
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manager.mux.Lock()
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defer manager.mux.Unlock()
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return nil
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}
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func (manager *manager) setMinMaxIfNotPresent(cluster *service.Cluster) {
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if cluster.Minsize == 0 || cluster.Maxsize == 0 {
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cluster.Minsize = manager.clusterConfig.minSize
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cluster.Maxsize = manager.clusterConfig.maxSize
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}
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}
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func (manager *manager) fetchCluster() error {
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manager.mux.Lock()
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defer manager.mux.Unlock()
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cluster, err := manager.service.GetClusterDetails(manager.clusterConfig.clusterID)
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if err != nil {
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return err
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}
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klog.Info("Got cluster : ", cluster)
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manager.setMinMaxIfNotPresent(cluster)
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manager.asg.Copy(cluster)
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return nil
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}
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func (manager *manager) scaleCluster(clusterID string, workerCount int) (*service.Cluster, error) {
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manager.mux.Lock()
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defer manager.mux.Unlock()
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cluster, err := manager.service.ScaleCluster(clusterID, workerCount)
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if err != nil {
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return nil, err
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}
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klog.Info("Scaled up cluster : ", cluster)
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manager.setMinMaxIfNotPresent(cluster)
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return cluster, nil
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}
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func (manager *manager) removeNodesFromCluster(clusterID string, nodeIDs ...string) (*service.Cluster, error) {
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manager.mux.Lock()
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defer manager.mux.Unlock()
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cluster, err := manager.service.RemoveNodesFromCluster(clusterID, nodeIDs...)
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if err != nil {
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return nil, err
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}
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klog.Info("Scaled down cluster : ", cluster)
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manager.setMinMaxIfNotPresent(cluster)
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return cluster, nil
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}
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func newManager(clusterConfig *clusterConfig, opts ...option) (*manager, error) {
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cfg, err := createConfig(opts...)
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if err != nil {
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return nil, err
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}
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cfg.asg.cluster = &service.Cluster{
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ID: clusterConfig.clusterID,
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Minsize: clusterConfig.minSize,
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Maxsize: clusterConfig.maxSize,
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}
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manager := &manager{
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asg: cfg.asg,
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service: cfg.service,
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clusterConfig: clusterConfig,
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}
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cfg.asg.manager = manager
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manager.refresh()
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return manager, nil
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}
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