71 lines
2 KiB
Go
71 lines
2 KiB
Go
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/*
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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 main
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import (
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"flag"
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"strings"
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"time"
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"github.com/coreos/etcd/clientv3"
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"github.com/golang/glog"
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"golang.org/x/net/context"
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)
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var (
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etcdAddress = flag.String("etcd-address", "", "Etcd address")
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ttlKeysPrefix = flag.String("ttl-keys-prefix", "", "Prefix for TTL keys")
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leaseDuration = flag.Duration("lease-duration", time.Hour, "Lease duration (seconds granularity)")
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)
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func main() {
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flag.Parse()
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if *etcdAddress == "" {
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glog.Fatalf("--etcd-address flag is required")
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}
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client, err := clientv3.New(clientv3.Config{Endpoints: []string{*etcdAddress}})
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if err != nil {
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glog.Fatalf("Error while creating etcd client: %v", err)
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}
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// Make sure that ttlKeysPrefix is ended with "/" so that we only get children "directories".
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if !strings.HasSuffix(*ttlKeysPrefix, "/") {
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*ttlKeysPrefix += "/"
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}
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ctx := context.Background()
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objectsResp, err := client.KV.Get(ctx, *ttlKeysPrefix, clientv3.WithPrefix())
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if err != nil {
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glog.Fatalf("Error while getting objects to attach to the lease")
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}
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lease, err := client.Lease.Grant(ctx, int64(*leaseDuration/time.Second))
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if err != nil {
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glog.Fatalf("Error while creating lease: %v", err)
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}
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glog.Infof("Lease with TTL: %v created", lease.TTL)
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glog.Infof("Attaching lease to %d entries", len(objectsResp.Kvs))
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for _, kv := range objectsResp.Kvs {
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_, err := client.KV.Put(ctx, string(kv.Key), string(kv.Value), clientv3.WithLease(lease.ID))
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if err != nil {
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glog.Errorf("Error while attaching lease to: %s", string(kv.Key))
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}
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}
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}
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