45 lines
1003 B
Go
45 lines
1003 B
Go
package upstream
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import (
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"context"
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"fmt"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/client"
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"github.com/sirupsen/logrus"
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)
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// RunServiceScale scales a service (useful for restart action)
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func RunServiceScale(ctx context.Context, cl *client.Client, serviceID string, scale uint64) error {
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service, _, err := cl.ServiceInspectWithRaw(ctx, serviceID, types.ServiceInspectOptions{})
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if err != nil {
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return err
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}
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serviceMode := &service.Spec.Mode
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if serviceMode.Replicated != nil {
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serviceMode.Replicated.Replicas = &scale
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} else if serviceMode.ReplicatedJob != nil {
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serviceMode.ReplicatedJob.TotalCompletions = &scale
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} else {
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return fmt.Errorf("scale can only be used with replicated or replicated-job mode")
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}
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response, err := cl.ServiceUpdate(
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ctx,
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service.ID,
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service.Version,
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service.Spec,
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types.ServiceUpdateOptions{},
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)
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if err != nil {
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return err
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}
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for _, warning := range response.Warnings {
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logrus.Warn(warning)
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}
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return nil
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}
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