func getService(ctx context.Context, c swarmapi.ControlClient, input string) (*swarmapi.Service, error) {
// GetService to match via full ID.
rg, err := c.GetService(ctx, &swarmapi.GetServiceRequest{ServiceID: input})
if err != nil {
// If any error (including NotFound), ListServices to match via full name.
rl, err := c.ListServices(ctx, &swarmapi.ListServicesRequest{Filters: &swarmapi.ListServicesRequest_Filters{Names: []string{input}}})
if err != nil || len(rl.Services) == 0 {
// If any error or 0 result, ListServices to match via ID prefix.
rl, err = c.ListServices(ctx, &swarmapi.ListServicesRequest{Filters: &swarmapi.ListServicesRequest_Filters{IDPrefixes: []string{input}}})
}
if err != nil {
return nil, err
}
if len(rl.Services) == 0 {
return nil, fmt.Errorf("service %s not found", input)
}
if l := len(rl.Services); l > 1 {
return nil, fmt.Errorf("service %s is ambigious (%d matches found)", input, l)
}
return rl.Services[0], nil
}
return rg.Service, nil
}
