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Add ability to compare traces on span durations
Add a feature to deemphasize structural differences and instead base the comparison on the average duration of spans for a node. Feature is hidden by default and enabled by adding "duration" as a query param. Signed-off-by: Joe Farro <[email protected]>
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packages/jaeger-ui/src/components/TraceDiff/TraceDiffGraph/avg-duration.js
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| Original file line number | Diff line number | Diff line change |
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| // @flow | ||
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| // Copyright (c) 2018 Uber Technologies, Inc. | ||
| // | ||
| // 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. | ||
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| import DagNode from '../../../model/trace-dag/DagNode'; | ||
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| import type { DiffMembers } from '../../../model/trace-dag/DagNode'; | ||
| import type { DenseSpan, NodeID } from '../../../model/trace-dag/types'; | ||
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| type AvgDurations = { | ||
| a: ?number, | ||
| b: ?number, | ||
| }; | ||
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| const avgDurationsCache: WeakMap<DiffMembers, AvgDurations> = new WeakMap(); | ||
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| // export function getAvgDuration(denseSpans: ?DenseSpan[]) { | ||
| function getAvgDuration(denseSpans: ?(DenseSpan[])) { | ||
| if (!denseSpans) { | ||
| return null; | ||
| } | ||
| let sum = 0; | ||
| for (let i = 0; i < denseSpans.length; i++) { | ||
| sum += denseSpans[i].span.duration; | ||
| } | ||
| return sum / denseSpans.length; | ||
| } | ||
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| export function getAvgDurations(diff: DiffMembers) { | ||
| const cached = avgDurationsCache.get(diff); | ||
| if (cached) { | ||
| return cached; | ||
| } | ||
| const a = getAvgDuration(diff.a && diff.a.members); | ||
| const b = getAvgDuration(diff.b && diff.b.members); | ||
| const rv = { a, b }; | ||
| avgDurationsCache.set(diff, rv); | ||
| return rv; | ||
| } | ||
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| export function getRelativeDifference(a: number, b: number) { | ||
| return (a - b) / Math.max(a, b) * 100; | ||
| } | ||
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| function getDifference(a: number, b: number) { | ||
| return a - b; | ||
| } | ||
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| export function getAvgDurationDiffDomain(scaleOn: ?string, nodesMap: Map<NodeID, DagNode>) { | ||
| let maxRelDiff = 0; | ||
| const getDiff = scaleOn === 'relative' ? getRelativeDifference : getDifference; | ||
| const keys = [...nodesMap.keys()]; | ||
| for (let i = 0; i < keys.length; i++) { | ||
| const id = keys[i]; | ||
| const dagNode = nodesMap.get(id); | ||
| if (!dagNode) { | ||
| continue; | ||
| } | ||
| const { a, b } = getAvgDurations(dagNode.data); | ||
| if (a == null || b == null) { | ||
| continue; | ||
| } | ||
| const relDiff = Math.abs(getDiff(a, b)); | ||
| if (relDiff > maxRelDiff) { | ||
| maxRelDiff = relDiff; | ||
| } | ||
| } | ||
| return [-maxRelDiff, 0, maxRelDiff]; | ||
| } |
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