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[Refactor]: Enhancement to selfTime calculation logic in TraceStatistics view #1901

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merged 12 commits into from
Oct 24, 2023
Merged

[Refactor]: Enhancement to selfTime calculation logic in TraceStatistics view #1901

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b02cde1
Enhancement to selfTime calculation logic
GLVSKiriti Oct 21, 2023
3db728f
Minimized the code complexity
GLVSKiriti Oct 22, 2023
53dd0df
Edited test fixtures
GLVSKiriti Oct 22, 2023
79991df
Multiplied with 10 to Drange intervals to avoid improper overlaps
GLVSKiriti Oct 22, 2023
ac620db
Added comments to explain the logic of the code
GLVSKiriti Oct 23, 2023
108829c
Renamed a trace file name
GLVSKiriti Oct 23, 2023
a1e3b4a
Modified the code
GLVSKiriti Oct 23, 2023
50e0a39
Update packages/jaeger-ui/src/components/TracePage/TraceStatistics/ta…
GLVSKiriti Oct 23, 2023
df59065
Updated to suggested changes
GLVSKiriti Oct 23, 2023
c91f7d7
computeSelfTime function is introduced
GLVSKiriti Oct 23, 2023
44a1da7
Updated code and comments to suggested changes
GLVSKiriti Oct 24, 2023
ce1f573
Merge branch 'main' into selfTimeEnhancementInTraceStatistics
GLVSKiriti Oct 24, 2023
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6 changes: 3 additions & 3 deletions packages/jaeger-ui/src/components/TracePage/CriticalPath/testCases/test3.js
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Original file line number Diff line number Diff line change
Expand Up @@ -27,16 +27,16 @@ Span B will be dropped. |
span A is on critical path(+++++) |
*/

import trace from '../../TraceStatistics/tableValuesTestTrace/traceWithSingleChildSpanLongerThanParent.json';
import trace from '../../TraceStatistics/tableValuesTestTrace/traceWithSingleChildLongerThanParentAndStartsAfterParent.json';

const transformedTrace = transformTraceData(trace);
const traceStart = 1679437737490189;
const traceStart = 100;

const criticalPathSections = [
{
spanId: '006c3cf93508f205',
section_start: traceStart,
section_end: traceStart + 36,
section_end: traceStart + 40,
},
];

Expand Down
17 changes: 10 additions & 7 deletions packages/jaeger-ui/src/components/TracePage/TraceStatistics/tableValues.test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,7 @@ import traceSpanLongerAsParent from './tableValuesTestTrace/spanLongerAsParent.j
import traceWithOverlappingChildrenLongerThanParent from './tableValuesTestTrace/traceWithOverlappingChildrenLongerThanParent.json';
import traceWithTwoNonOverlappingChildren from './tableValuesTestTrace/traceWithTwoNonOverlappingChildren.json';
import traceWithOverlappingChildren from './tableValuesTestTrace/traceWithOverlappingChildren.json';
import traceWithSingleChildSpanLongerThanParent from './tableValuesTestTrace/traceWithSingleChildSpanLongerThanParent.json';
import traceWithSingleChildLongerThanParentAndStartsAfterParent from './tableValuesTestTrace/traceWithSingleChildLongerThanParentAndStartsAfterParent.json';
import traceWithThreeShortChildren from './tableValuesTestTrace/traceWithThreeShortChildren.json';
import traceWithTwoChildrenStartedAtTraceStart from './tableValuesTestTrace/traceWithTwoChildrenStartedAtTraceStart.json';

Expand All @@ -39,8 +39,8 @@ const transformedTraceWithOverlappingChildrenLongerThanParent = transformTraceDa
);
const transformedTraceWithTwoNonOverlappingChildren = transformTraceData(traceWithTwoNonOverlappingChildren);
const transformedTraceWithOverlappingChildren = transformTraceData(traceWithOverlappingChildren);
const transformedTraceWithSingleChildSpanLongerThanParent = transformTraceData(
traceWithSingleChildSpanLongerThanParent
const transformedtraceWithSingleChildLongerThanParentAndStartsAfterParent = transformTraceData(
traceWithSingleChildLongerThanParentAndStartsAfterParent
);
const transformedTraceWithThreeShortChildren = transformTraceData(traceWithThreeShortChildren);
const transformedTraceWithTwoChildrenStartedAtTraceStart = transformTraceData(
Expand Down Expand Up @@ -506,12 +506,12 @@ describe('check self time', () => {
'Service Name',
transformedTraceWithOverlappingChildrenLongerThanParent
);
expect(serviceOne.selfTotal).toBe(10.33);
expect(serviceOne.selfTotal).toBe(0.03);
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});

it('span with two children that do not overlap and one is longer than its parent', () => {
const [serviceOne] = getColumnValues('Service Name', transformedTraceWithTwoNonOverlappingChildren);
expect(serviceOne.selfTotal).toBe(1.51);
expect(serviceOne.selfTotal).toBe(0.03);
});

it('span with two overlapping children where one is longer than its parent', () => {
Expand All @@ -520,8 +520,11 @@ describe('check self time', () => {
});

it('span with single child span longer than its parent', () => {
const [serviceOne] = getColumnValues('Service Name', transformedTraceWithSingleChildSpanLongerThanParent);
expect(serviceOne.selfTotal).toBe(1.34);
const [serviceOne] = getColumnValues(
'Service Name',
transformedtraceWithSingleChildLongerThanParentAndStartsAfterParent
);
expect(serviceOne.selfTotal).toBe(0.04);
});

it('span with three children shorter than their parent, two of which overlap', () => {
Expand Down
238 changes: 35 additions & 203 deletions packages/jaeger-ui/src/components/TracePage/TraceStatistics/tableValues.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -13,88 +13,42 @@
// limitations under the License.

import * as _ from 'lodash';
import DRange from 'drange';
import { Trace, Span } from '../../../types/trace';
import { ITableSpan } from './types';
import colorGenerator from '../../../utils/color-generator';

const serviceName = 'Service Name';
const operationName = 'Operation Name';

/**
* Return the lowest startTime.
*/
function getLowestStartTime(allOverlay: Span[]) {
let result;
const temp = _.minBy(allOverlay, function calc(a) {
return a.relativeStartTime;
});
if (temp !== undefined) {
result = { duration: temp.duration, lowestStartTime: temp.relativeStartTime };
} else {
result = { duration: -1, lowestStartTime: -1 };
}
return result;
}

/**
* Determines whether the cut spans belong together and then calculates the duration.
*/
function getDuration(lowestStartTime: number, duration: number, allOverlay: Span[]) {
let durationChange = duration;
let didDelete = false;
for (let i = 0; i < allOverlay.length; i++) {
if (lowestStartTime + durationChange >= allOverlay[i].relativeStartTime) {
if (lowestStartTime + durationChange < allOverlay[i].relativeStartTime + allOverlay[i].duration) {
const tempDuration =
allOverlay[i].relativeStartTime + allOverlay[i].duration - lowestStartTime + durationChange;
durationChange = tempDuration;
}
allOverlay.splice(i, 1);
didDelete = true;
break;
}
}
const result = { allOverlay, duration: durationChange, didDelete };
return result;
}

/**
* Return the selfTime of overlay spans.
*/
function onlyOverlay(allOverlay: Span[], allChildren: Span[], tempSelf: number, span: Span) {
let tempSelfChange = tempSelf;
let duration = 0;
let resultGetDuration = { allOverlay, duration, didDelete: false };
const noOverlay = _.difference(allChildren, allOverlay);
let lowestStartTime = 0;
let totalDuration = 0;
const result = getLowestStartTime(allOverlay);
lowestStartTime = result.lowestStartTime;
duration = result.duration;

do {
resultGetDuration = getDuration(lowestStartTime, duration, resultGetDuration.allOverlay);
if (!resultGetDuration.didDelete && resultGetDuration.allOverlay.length > 0) {
totalDuration = resultGetDuration.duration;
const temp = getLowestStartTime(resultGetDuration.allOverlay);
lowestStartTime = temp.lowestStartTime;
duration = temp.duration;
}
} while (resultGetDuration.allOverlay.length > 1);
duration = resultGetDuration.duration + totalDuration;
// no cut is observed
for (let i = 0; i < noOverlay.length; i++) {
duration += noOverlay[i].duration;
function computeSelfTime(span: Span, allSpans: Span[]): number {
if (span.hasChildren) {
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// We want to represent spans as half-open intervals like [startTime, startTime + duration).
// This way the subtraction preserves the right boundaries. However, DRange treats all
// intervals as inclusive. For example,
// range(1, 10).subtract(4, 8) => range([1, 3], [9-10])
// length=(3-1)+(10-9)=2+1=3
// In other words, we took an interval of length=10-1=9 and subtracted length=8-4=4.
// We should've ended up with length 9-4=5, but we got 3.
// To work around that, we multiply start/end times by 10 and subtract one from the end.
// So instead of [1-10] we get [10-99]. This makes the intervals work like half-open.
const spanRange = new DRange(10 * span.startTime, 10 * (span.startTime + span.duration) - 1);
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// Filter for CHILD_OF we don't want to calculate FOLLOWS_FROM
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const children = allSpans.filter(
each =>
span.childSpanIds.includes(each.spanID) &&
each.references[0].spanID === span.spanID &&
each.references[0].refType === 'CHILD_OF'
);
children.forEach(child => {
spanRange.subtract(10 * child.startTime, 10 * (child.startTime + child.duration) - 1);
});
return Math.round(spanRange.length / 10);
}
tempSelfChange += span.duration - duration;

return tempSelfChange;
return span.duration;
}

/**
* Used to calculated the content.
*/
function calculateContent(trace: Trace, span: Span, allSpans: Span[], resultValue: any) {
function computeColumnValues(trace: Trace, span: Span, allSpans: Span[], resultValue: any) {
const resultValueChange = resultValue;
resultValueChange.count += 1;
resultValueChange.total += span.duration;
Expand All @@ -104,130 +58,8 @@ function calculateContent(trace: Trace, span: Span, allSpans: Span[], resultValu
if (resultValueChange.max < span.duration) {
resultValueChange.max = span.duration;
}
// selfTime
let tempSelf = 0;
let longerAsParent = false;
let kinderSchneiden = false;
let allOverlay = [];
const longerAsParentSpan = [];
if (span.hasChildren) {
const allChildren = [] as any;
for (let i = 0; i < allSpans.length; i++) {
// i am a child?
if (allSpans[i].references.length === 1) {
if (span.spanID === allSpans[i].references[0].spanID) {
allChildren.push(allSpans[i]);
}
}
}
// i only have one child
if (allChildren.length === 1) {
if (
span.relativeStartTime + span.duration >=
allChildren[0].relativeStartTime + allChildren[0].duration
) {
tempSelf = span.duration - allChildren[0].duration;
} else {
tempSelf = allChildren[0].relativeStartTime - span.relativeStartTime;
}
} else {
// is the child longer as parent
for (let i = 0; i < allChildren.length; i++) {
if (
span.duration + span.relativeStartTime <
allChildren[i].duration + allChildren[i].relativeStartTime
) {
longerAsParent = true;
longerAsParentSpan.push(allChildren[i]);
}
}
// Do the children overlap?
for (let i = 0; i < allChildren.length; i++) {
for (let j = 0; j < allChildren.length; j++) {
// aren't they the same kids?
if (allChildren[i].spanID !== allChildren[j].spanID) {
// if yes the children cut themselves or lie into each other
if (
allChildren[i].relativeStartTime <= allChildren[j].relativeStartTime &&
allChildren[i].relativeStartTime + allChildren[i].duration >= allChildren[j].relativeStartTime
) {
kinderSchneiden = true;
allOverlay.push(allChildren[i]);
allOverlay.push(allChildren[j]);
}
}
}
}
allOverlay = [...new Set(allOverlay)];
// diff options
if (!longerAsParent && !kinderSchneiden) {
tempSelf = span.duration;
for (let i = 0; i < allChildren.length; i++) {
tempSelf -= allChildren[i].duration;
}
} else if (longerAsParent && kinderSchneiden) {
// cut only longerAsParent
if (_.isEmpty(_.xor(allOverlay, longerAsParentSpan))) {
// find ealiesr longerasParent
const earliestLongerAsParent = _.minBy(longerAsParentSpan, function calc(a) {
return a.relativeStartTime;
});
// remove all children wo are longer as Parent
const allChildrenWithout = _.difference(allChildren, longerAsParentSpan);
tempSelf = earliestLongerAsParent.relativeStartTime - span.relativeStartTime;
for (let i = 0; i < allChildrenWithout.length; i++) {
tempSelf -= allChildrenWithout[i].duration;
}
} else {
const overlayOnly = _.difference(allOverlay, longerAsParentSpan);
const allChildrenWithout = _.difference(allChildren, longerAsParentSpan);
const earliestLongerAsParent = _.minBy(longerAsParentSpan, function calc(a) {
return a.relativeStartTime;
});

// overlay between longerAsParent and overlayOnly
const overlayWithout = [];
for (let i = 0; i < overlayOnly.length; i++) {
if (!earliestLongerAsParent.relativeStartTime <= overlayOnly[i].relativeStartTime) {
overlayWithout.push(overlayOnly[i]);
}
}
for (let i = 0; i < overlayWithout.length; i++) {
if (
overlayWithout[i].relativeStartTime + overlayWithout[i].duration >
earliestLongerAsParent.relativeStartTime
) {
overlayWithout[i].duration -=
overlayWithout[i].relativeStartTime +
overlayWithout[i].duration -
earliestLongerAsParent.relativeStartTime;
if (overlayWithout[i].duration < 0) {
overlayWithout[i].duration = 0;
}
}
}

tempSelf = onlyOverlay(overlayWithout, allChildrenWithout, tempSelf, span);
const diff = span.relativeStartTime + span.duration - earliestLongerAsParent.relativeStartTime;
tempSelf = Math.max(0, tempSelf - diff);
}
} else if (longerAsParent) {
// span is longer as Parent
tempSelf = longerAsParentSpan[0].relativeStartTime - span.relativeStartTime;
for (let i = 0; i < allChildren.length; i++) {
if (allChildren[i].spanID !== longerAsParentSpan[0].spanID) {
tempSelf -= allChildren[i].duration;
}
}
} else {
// Overlay
tempSelf = onlyOverlay(allOverlay, allChildren, tempSelf, span);
}
}
// no children
} else {
tempSelf += span.duration;
}
const tempSelf = computeSelfTime(span, allSpans);
if (resultValueChange.selfMin > tempSelf) {
resultValueChange.selfMin = tempSelf;
}
Expand Down Expand Up @@ -315,18 +147,18 @@ function valueFirstDropdown(selectedTagKey: string, trace: Trace) {
for (let j = 0; j < allSpans.length; j++) {
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Just to illustrate my earlier point about linear searches: with this loop in place we're doing O(N^2) work.

if (selectedTagKey === serviceName) {
if (allSpans[j].process.serviceName === allDiffColumnValues[i]) {
resultValue = calculateContent(trace, allSpans[j], allSpans, resultValue);
resultValue = computeColumnValues(trace, allSpans[j], allSpans, resultValue);
color = colorGenerator.getColorByKey(allSpans[j].process.serviceName);
}
} else if (selectedTagKey === operationName) {
if (allSpans[j].operationName === allDiffColumnValues[i]) {
resultValue = calculateContent(trace, allSpans[j], allSpans, resultValue);
resultValue = computeColumnValues(trace, allSpans[j], allSpans, resultValue);
}
} else {
// used when a tag is selected
for (let l = 0; l < allSpans[j].tags.length; l++) {
if (allSpans[j].tags[l].value === allDiffColumnValues[i]) {
resultValue = calculateContent(trace, allSpans[j], allSpans, resultValue);
resultValue = computeColumnValues(trace, allSpans[j], allSpans, resultValue);
}
}
}
Expand Down Expand Up @@ -385,7 +217,7 @@ function valueFirstDropdown(selectedTagKey: string, trace: Trace) {
percent: 0,
};
for (let i = 0; i < spanWithNoSelectedTag.length; i++) {
resultValue = calculateContent(trace, spanWithNoSelectedTag[i], allSpans, resultValue);
resultValue = computeColumnValues(trace, spanWithNoSelectedTag[i], allSpans, resultValue);
}
if (resultValue.count !== 0) {
// Others is build
Expand Down Expand Up @@ -449,16 +281,16 @@ function buildDetail(
if (isDetail) {
for (let a = 0; a < tempArray[l].tags.length; a++) {
if (diffNamesA[j] === tempArray[l].tags[a].value) {
resultValue = calculateContent(trace, tempArray[l], allSpans, resultValue);
resultValue = computeColumnValues(trace, tempArray[l], allSpans, resultValue);
}
}
} else if (selectedTagKeySecond === serviceName) {
if (diffNamesA[j] === tempArray[l].process.serviceName) {
resultValue = calculateContent(trace, tempArray[l], allSpans, resultValue);
resultValue = computeColumnValues(trace, tempArray[l], allSpans, resultValue);
color = colorGenerator.getColorByKey(tempArray[l].process.serviceName);
}
} else if (diffNamesA[j] === tempArray[l].operationName) {
resultValue = calculateContent(trace, tempArray[l], allSpans, resultValue);
resultValue = computeColumnValues(trace, tempArray[l], allSpans, resultValue);
}
}
resultValue.selfAvg = resultValue.selfTotal / resultValue.count;
Expand Down Expand Up @@ -523,7 +355,7 @@ function generateDetailRest(allColumnValues: ITableSpan[], selectedTagKeySecond:
}
}
if (rest) {
resultValue = calculateContent(trace, allSpans[j], allSpans, resultValue);
resultValue = computeColumnValues(trace, allSpans[j], allSpans, resultValue);
}
}
}
Expand Down
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