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refreshable.go
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refreshable.go
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// Copyright (c) 2018 Palantir Technologies. 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 refreshable
type Refreshable interface {
// Current returns the most recent value of this Refreshable.
Current() interface{}
// Subscribe subscribes to changes of this Refreshable. The provided function is called with the value of Current()
// whenever the value changes.
Subscribe(consumer func(interface{})) (unsubscribe func())
// Map returns a new Refreshable based on the current one that handles updates based on the current Refreshable.
Map(func(interface{}) interface{}) Refreshable
}