114 lines
3.6 KiB
Go
114 lines
3.6 KiB
Go
/*
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Copyright 2018 the Velero contributors.
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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 serverstatusrequest
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import (
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"encoding/json"
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"time"
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jsonpatch "github.com/evanphx/json-patch"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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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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"k8s.io/apimachinery/pkg/util/clock"
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velerov1api "github.com/vmware-tanzu/velero/pkg/apis/velero/v1"
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"github.com/vmware-tanzu/velero/pkg/buildinfo"
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velerov1client "github.com/vmware-tanzu/velero/pkg/generated/clientset/versioned/typed/velero/v1"
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"github.com/vmware-tanzu/velero/pkg/plugin/framework"
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)
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const ttl = time.Minute
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type PluginLister interface {
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// List returns all PluginIdentifiers for kind.
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List(kind framework.PluginKind) []framework.PluginIdentifier
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}
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// Process fills out new ServerStatusRequest objects and deletes processed ones
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// that have expired.
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func Process(req *velerov1api.ServerStatusRequest, client velerov1client.ServerStatusRequestsGetter, pluginLister PluginLister, clock clock.Clock, log logrus.FieldLogger) error {
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switch req.Status.Phase {
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case "", velerov1api.ServerStatusRequestPhaseNew:
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log.Info("Processing new ServerStatusRequest")
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return errors.WithStack(patch(client, req, func(req *velerov1api.ServerStatusRequest) {
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req.Status.ServerVersion = buildinfo.Version
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req.Status.ProcessedTimestamp = &metav1.Time{Time: clock.Now()}
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req.Status.Phase = velerov1api.ServerStatusRequestPhaseProcessed
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req.Status.Plugins = plugins(pluginLister)
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}))
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case velerov1api.ServerStatusRequestPhaseProcessed:
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log.Debug("Checking whether ServerStatusRequest has expired")
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expiration := req.Status.ProcessedTimestamp.Add(ttl)
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if expiration.After(clock.Now()) {
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log.Debug("ServerStatusRequest has not expired")
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return nil
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}
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log.Debug("ServerStatusRequest has expired, deleting it")
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if err := client.ServerStatusRequests(req.Namespace).Delete(req.Name, nil); err != nil {
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return errors.WithStack(err)
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}
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return nil
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default:
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return errors.Errorf("unexpected ServerStatusRequest phase %q", req.Status.Phase)
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}
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}
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func patch(client velerov1client.ServerStatusRequestsGetter, req *velerov1api.ServerStatusRequest, updateFunc func(*velerov1api.ServerStatusRequest)) error {
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originalJSON, err := json.Marshal(req)
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if err != nil {
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return errors.WithStack(err)
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}
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updateFunc(req)
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updatedJSON, err := json.Marshal(req)
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if err != nil {
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return errors.WithStack(err)
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}
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patchBytes, err := jsonpatch.CreateMergePatch(originalJSON, updatedJSON)
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if err != nil {
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return errors.WithStack(err)
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}
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_, err = client.ServerStatusRequests(req.Namespace).Patch(req.Name, types.MergePatchType, patchBytes)
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if err != nil {
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return errors.WithStack(err)
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}
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return nil
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}
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func plugins(pluginLister PluginLister) []velerov1api.PluginInfo {
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var plugins []velerov1api.PluginInfo
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for _, v := range framework.AllPluginKinds() {
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list := pluginLister.List(v)
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for _, plugin := range list {
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pluginInfo := velerov1api.PluginInfo{
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Name: plugin.Name,
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Kind: plugin.Kind.String(),
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}
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plugins = append(plugins, pluginInfo)
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}
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}
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return plugins
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}
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