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/*
*
* Copyright 2019 gRPC authors.
*
* 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 wrr contains the interface and common implementations of wrr
// algorithms.
package wrr
// WRR defines an interface that implements weighted round robin.
type WRR interface {
// Add adds an item with weight to the WRR set.
//
// Add and Next need to be thread safe.
Add(item interface{}, weight int64)
// Next returns the next picked item.
//
// Add and Next need to be thread safe.
Next() interface{}
}
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