mirror of https://github.com/grpc/grpc-go.git
45 lines
1.1 KiB
Go
45 lines
1.1 KiB
Go
/*
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* Copyright 2019 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package edsbalancer
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import "google.golang.org/grpc/internal/wrr"
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type dropper struct {
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// Drop rate will be numerator/denominator.
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numerator uint32
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denominator uint32
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w wrr.WRR
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category string
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}
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func newDropper(numerator, denominator uint32, category string) *dropper {
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w := newRandomWRR()
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w.Add(true, int64(numerator))
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w.Add(false, int64(denominator-numerator))
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return &dropper{
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numerator: numerator,
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denominator: denominator,
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w: w,
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category: category,
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}
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}
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func (d *dropper) drop() (ret bool) {
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return d.w.Next().(bool)
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}
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