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42 lines
1.2 KiB
Go
42 lines
1.2 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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}
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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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}
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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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