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resume.go
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resume.go
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// Copyright 2022 Google LLC
//
// 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
//
// https://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 snippets
// [START compute_resume_instance]
import (
"context"
"fmt"
"io"
compute "cloud.google.com/go/compute/apiv1"
computepb "cloud.google.com/go/compute/apiv1/computepb"
)
// resumeInstance resumes a suspended Google Compute Engine instance
// (with unencrypted disks).
func resumeInstance(w io.Writer, projectID, zone, instanceName string) error {
// projectID := "your_project_id"
// zone := "europe-central2-b"
// instanceName := "your_instance_name"
ctx := context.Background()
instancesClient, err := compute.NewInstancesRESTClient(ctx)
if err != nil {
return fmt.Errorf("NewInstancesRESTClient: %w", err)
}
defer instancesClient.Close()
getInstanceReq := &computepb.GetInstanceRequest{
Project: projectID,
Zone: zone,
Instance: instanceName,
}
instance, err := instancesClient.Get(ctx, getInstanceReq)
if err != nil {
return fmt.Errorf("unable to get instance: %w", err)
}
if instance.GetStatus() != "SUSPENDED" {
return fmt.Errorf(
"only suspended instances can be resumed, instance %s is in %s state",
instanceName,
instance.GetStatus(),
)
}
resumeInstanceReq := &computepb.ResumeInstanceRequest{
Project: projectID,
Zone: zone,
Instance: instanceName,
}
op, err := instancesClient.Resume(ctx, resumeInstanceReq)
if err != nil {
return fmt.Errorf("unable to resume instance: %w", err)
}
if err = op.Wait(ctx); err != nil {
return fmt.Errorf("unable to wait for the operation: %w", err)
}
fmt.Fprintf(w, "Instance resumed\n")
return nil
}
// [END compute_resume_instance]