mirror of
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49 lines
1.4 KiB
Go
49 lines
1.4 KiB
Go
// Copyright 2022 The etcd 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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package identity
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import "sync/atomic"
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type Provider interface {
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// NewStreamID returns an integer starting from zero to make it render nicely by porcupine visualization.
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NewStreamID() int
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// NewRequestID returns unique identification used to make write requests unique.
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NewRequestID() int
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// NewClientID returns unique identification for client and their reports.
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NewClientID() int
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}
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func NewIDProvider() Provider {
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return &atomicProvider{}
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}
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type atomicProvider struct {
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streamID atomic.Int64
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requestID atomic.Int64
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clientID atomic.Int64
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}
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func (id *atomicProvider) NewStreamID() int {
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return int(id.streamID.Add(1) - 1)
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}
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func (id *atomicProvider) NewRequestID() int {
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return int(id.requestID.Add(1))
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}
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func (id *atomicProvider) NewClientID() int {
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return int(id.clientID.Add(1))
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}
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