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noop.go
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noop.go
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// Copyright 2018 Google Inc. All Rights Reserved.
//
// 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 election
import "context"
// NoopElection is a stub Election that always believes to be the master.
type NoopElection int64
// Await returns immediately, as the instance is always the master.
func (ne NoopElection) Await(ctx context.Context) error {
return nil
}
// Observe returns the passed in context as a mastership context.
func (ne NoopElection) Observe(ctx context.Context) (context.Context, error) {
return ctx, nil
}
// Resign does nothing because NoopElection is always the master.
func (ne NoopElection) Resign(ctx context.Context) error {
return nil
}
// Close does nothing because NoopElection is always the master.
func (ne NoopElection) Close(ctx context.Context) error {
return nil
}
// NoopFactory creates NoopElection instances.
type NoopFactory struct{}
// NewElection creates a specific NoopElection instance.
func (nf NoopFactory) NewElection(ctx context.Context, treeID int64) (Election, error) {
return NoopElection(treeID), nil
}