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remove_csi_taints.go
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remove_csi_taints.go
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/*
Copyright 2021 Flant JSC
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 hooks
import (
"github.com/flant/addon-operator/pkg/module_manager/go_hook"
"github.com/flant/addon-operator/sdk"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/utils/pointer"
)
var _ = sdk.RegisterFunc(&go_hook.HookConfig{
OnBeforeHelm: &go_hook.OrderedConfig{Order: 20},
Queue: "/modules/node-manager/remove_csi_taints",
Kubernetes: []go_hook.KubernetesConfig{
{
Name: "csinodes",
WaitForSynchronization: pointer.BoolPtr(false),
ApiVersion: "storage.k8s.io/v1",
Kind: "CSINode",
FilterFunc: csiFilterCSINode, // jqFilter: '{"name": .metadata.name}'
},
{
Name: "nodes",
WaitForSynchronization: pointer.BoolPtr(false),
ApiVersion: "v1",
Kind: "Node",
ExecuteHookOnEvents: pointer.BoolPtr(false),
ExecuteHookOnSynchronization: pointer.BoolPtr(false),
FilterFunc: csiFilterNode, // '{"needPatch": ([(.spec.taints // [])[] | select(.key == "node.deckhouse.io/csi-not-bootstrapped")] | length > 0), "name": .metadata.name}',
},
},
}, handleRemoveCSI)
func csiFilterCSINode(obj *unstructured.Unstructured) (go_hook.FilterResult, error) {
return obj.GetName(), nil
}
func csiFilterNode(obj *unstructured.Unstructured) (go_hook.FilterResult, error) {
var node v1.Node
err := sdk.FromUnstructured(obj, &node)
if err != nil {
return nil, err
}
var needPatch bool
for _, taint := range node.Spec.Taints {
if taint.Key == "node.deckhouse.io/csi-not-bootstrapped" {
needPatch = true
break
}
}
return removeCSINode{
Name: node.Name,
NeedPatch: needPatch,
}, nil
}
type removeCSINode struct {
Name string
NeedPatch bool
}
func handleRemoveCSI(input *go_hook.HookInput) error {
nodes := make(map[string]bool)
snap := input.Snapshots["nodes"]
for _, sn := range snap {
node := sn.(removeCSINode)
nodes[node.Name] = node.NeedPatch
}
snap = input.Snapshots["csinodes"]
for _, sn := range snap {
csiName := sn.(string)
needPatch, ok := nodes[csiName]
if !ok {
continue
}
if !needPatch {
continue
}
input.PatchCollector.Filter(removeCSIFilterNode, "v1", "Node", "", csiName)
}
return nil
}
func removeCSIFilterNode(obj *unstructured.Unstructured) (*unstructured.Unstructured, error) {
var node *v1.Node
err := sdk.FromUnstructured(obj, &node)
if err != nil {
return nil, err
}
taints := make([]v1.Taint, 0)
for _, taint := range node.Spec.Taints {
if taint.Key != "node.deckhouse.io/csi-not-bootstrapped" {
taints = append(taints, taint)
}
}
node.Spec.Taints = taints
return sdk.ToUnstructured(node)
}