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update_host_name_service.go
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/
update_host_name_service.go
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// Copyright 2016-2022 The Libsacloud Authors
//
// 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 ipaddress
import (
"context"
"fmt"
"time"
"github.com/sacloud/libsacloud/v2/sacloud"
)
const (
defaultRetryMax = 30
defaultRetryInterval = 10
)
func (s *Service) UpdateHostName(req *UpdateHostNameRequest) error {
return s.UpdateHostNameWithContext(context.Background(), req)
}
func (s *Service) UpdateHostNameWithContext(ctx context.Context, req *UpdateHostNameRequest) error {
if err := req.Validate(); err != nil {
return err
}
client := sacloud.NewIPAddressOp(s.caller)
_, err := client.Read(ctx, req.Zone, req.IPAddress)
if err != nil {
return err
}
if req.RetryMax == 0 {
req.RetryMax = defaultRetryMax
}
if req.RetryInterval == 0 {
req.RetryInterval = defaultRetryInterval
}
i := 0
success := false
for i < req.RetryMax {
if err := ctx.Err(); err != nil {
return fmt.Errorf("updating the HostName for %s failed: %s", req.IPAddress, err)
}
if _, err = client.UpdateHostName(ctx, req.Zone, req.IPAddress, req.HostName); err == nil {
success = true
break
}
time.Sleep(time.Duration(req.RetryInterval) * time.Second)
i++
}
if !success {
return fmt.Errorf("updating the HostName for %s failed: giving up on setting the HostName: max attempts exceeded", req.IPAddress)
}
return nil
}