69 lines
1.6 KiB
Go
69 lines
1.6 KiB
Go
/*
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* Copyright 2020 The Dragonfly 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 idgen
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import (
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"hash/crc32"
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"strings"
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"d7y.io/dragonfly/v2/pkg/rpc/base"
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"d7y.io/dragonfly/v2/pkg/util/digestutils"
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"d7y.io/dragonfly/v2/pkg/util/net/urlutils"
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)
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const (
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TwinsASuffix = "_A"
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TwinsBSuffix = "_B"
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)
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// GenerateTaskID generates a taskId.
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// filter is separated by & character.
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func TaskID(url string, filter string, meta *base.UrlMeta, bizID string) string {
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var data []string
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data = append(data, urlutils.FilterURLParam(url, strings.Split(filter, "&")))
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if meta != nil {
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if meta.Digest != "" {
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data = append(data, meta.Digest)
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}
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if meta.Range != "" {
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data = append(data, meta.Range)
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}
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}
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if bizID != "" {
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data = append(data, bizID)
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}
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return digestutils.Sha256(data...)
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}
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// GenerateTwinsTaskId used A/B testing
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func TwinsTaskID(url string, filter string, meta *base.UrlMeta, bizID, peerID string) string {
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taskID := TaskID(url, filter, meta, bizID)
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if crc32.ChecksumIEEE([]byte(peerID))&1 == 0 {
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taskID += TwinsASuffix
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} else {
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taskID += TwinsBSuffix
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}
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return taskID
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}
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