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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
//
// 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 keyset
import "fmt"
// Option is used to pass options for a keyset handle.
type Option interface {
set(k *Handle) error
}
type option func(*Handle) error
func (o option) set(h *Handle) error { return o(h) }
// WithAnnotations adds monitoring annotations to a keyset handle.
func WithAnnotations(annotations map[string]string) Option {
return option(func(h *Handle) error {
if h.annotations != nil {
return fmt.Errorf("keyset already contains annotations")
}
h.annotations = annotations
return nil
})
}
func applyOptions(h *Handle, opts ...Option) error {
for _, opt := range opts {
if err := opt.set(h); err != nil {
return err
}
}
return nil
}
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