3758ab62d1
This is to avoid unnecessary GCE API calls done by getInstanceByName helper, which is iterating over all zones to find in which zone the VM exists. ProviderID already contains all the information - it's in the form: gce://<VM URL> (VM URL contains project, zone, VM name). ProviderID is propagated by Kubelet on node registration and in case of bugs backfilled by node-controller.
137 lines
3.8 KiB
Go
137 lines
3.8 KiB
Go
// +build !providerless
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/*
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Copyright 2017 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 ipam
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import (
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"context"
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"encoding/json"
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"fmt"
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"net"
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"k8s.io/klog"
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v1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/types"
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clientset "k8s.io/client-go/kubernetes"
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v1core "k8s.io/client-go/kubernetes/typed/core/v1"
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"k8s.io/client-go/tools/record"
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nodeutil "k8s.io/kubernetes/pkg/util/node"
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"k8s.io/legacy-cloud-providers/gce"
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"k8s.io/metrics/pkg/client/clientset/versioned/scheme"
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)
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type adapter struct {
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k8s clientset.Interface
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cloud *gce.Cloud
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recorder record.EventRecorder
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}
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func newAdapter(k8s clientset.Interface, cloud *gce.Cloud) *adapter {
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ret := &adapter{
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k8s: k8s,
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cloud: cloud,
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}
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broadcaster := record.NewBroadcaster()
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broadcaster.StartLogging(klog.Infof)
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ret.recorder = broadcaster.NewRecorder(scheme.Scheme, v1.EventSource{Component: "cloudCIDRAllocator"})
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klog.V(0).Infof("Sending events to api server.")
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broadcaster.StartRecordingToSink(&v1core.EventSinkImpl{
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Interface: k8s.CoreV1().Events(""),
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})
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return ret
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}
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func (a *adapter) Alias(ctx context.Context, node *v1.Node) (*net.IPNet, error) {
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if node.Spec.ProviderID == "" {
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return nil, fmt.Errorf("node %s doesn't have providerID", node.Name)
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}
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cidrs, err := a.cloud.AliasRangesByProviderID(node.Spec.ProviderID)
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if err != nil {
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return nil, err
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}
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switch len(cidrs) {
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case 0:
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return nil, nil
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case 1:
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break
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default:
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klog.Warningf("Node %q has more than one alias assigned (%v), defaulting to the first", node.Name, cidrs)
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}
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_, cidrRange, err := net.ParseCIDR(cidrs[0])
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if err != nil {
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return nil, err
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}
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return cidrRange, nil
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}
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func (a *adapter) AddAlias(ctx context.Context, node *v1.Node, cidrRange *net.IPNet) error {
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if node.Spec.ProviderID == "" {
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return fmt.Errorf("node %s doesn't have providerID", node.Name)
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}
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return a.cloud.AddAliasToInstanceByProviderID(node.Spec.ProviderID, cidrRange)
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}
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func (a *adapter) Node(ctx context.Context, name string) (*v1.Node, error) {
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return a.k8s.CoreV1().Nodes().Get(context.TODO(), name, metav1.GetOptions{})
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}
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func (a *adapter) UpdateNodePodCIDR(ctx context.Context, node *v1.Node, cidrRange *net.IPNet) error {
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patch := map[string]interface{}{
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"apiVersion": node.APIVersion,
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"kind": node.Kind,
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"metadata": map[string]interface{}{"name": node.Name},
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"spec": map[string]interface{}{"podCIDR": cidrRange.String()},
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}
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bytes, err := json.Marshal(patch)
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if err != nil {
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return err
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}
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_, err = a.k8s.CoreV1().Nodes().Patch(context.TODO(), node.Name, types.StrategicMergePatchType, bytes, metav1.PatchOptions{})
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return err
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}
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func (a *adapter) UpdateNodeNetworkUnavailable(nodeName string, unavailable bool) error {
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condition := v1.ConditionFalse
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if unavailable {
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condition = v1.ConditionTrue
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}
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return nodeutil.SetNodeCondition(a.k8s, types.NodeName(nodeName), v1.NodeCondition{
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Type: v1.NodeNetworkUnavailable,
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Status: condition,
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Reason: "RouteCreated",
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Message: "NodeController created an implicit route",
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LastTransitionTime: metav1.Now(),
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})
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}
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func (a *adapter) EmitNodeWarningEvent(nodeName, reason, fmt string, args ...interface{}) {
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ref := &v1.ObjectReference{Kind: "Node", Name: nodeName}
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a.recorder.Eventf(ref, v1.EventTypeNormal, reason, fmt, args...)
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}
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