74 lines
2.0 KiB
Go
74 lines
2.0 KiB
Go
// Copyright 2021 Google LLC
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package restarter
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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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"strings"
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"cloud.google.com/go/pubsub"
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compute "google.golang.org/api/compute/v1"
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)
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type InstanceRestarter struct {
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ctx context.Context
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m pubsub.Message
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}
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// NewInstanceRestarter creates new InstanceRestarter
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func NewInstanceRestarter(context context.Context, message pubsub.Message) *InstanceRestarter {
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return &InstanceRestarter{
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ctx: context,
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m: message,
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}
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}
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// RestartInstance consumes a Pub/Sub message with an instance metadata and resets the instance.
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func RestartInstance(ctx context.Context, m pubsub.Message) error {
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return NewInstanceRestarter(ctx, m).restart()
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}
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// restartInstance sends a reset instance request to the Compute Engine API and waits for it to complete.
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func (r *InstanceRestarter) restart() error {
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var instance compute.Instance
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computeService, err := compute.NewService(r.ctx)
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if err != nil {
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fmt.Errorf("NewInstancesRESTClient: %v", err)
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return err
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}
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err = json.Unmarshal(r.m.Data, &instance)
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if err != nil {
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fmt.Errorf("JsonUnmarshalInstance: %v", err)
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return err
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}
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zone := instance.Zone[strings.LastIndex(instance.Zone, "/")+1:]
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project := strings.Split(instance.SelfLink, "/")[6]
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_, err = computeService.Instances.Reset(project, zone, instance.Name).Do()
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if err != nil {
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fmt.Errorf("ResetInstanceRequest: %v:", err)
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return err
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}
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fmt.Printf("Instance %s has been reset.", instance.Name)
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return nil
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}
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