| 1 | 'use strict'
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| 2 |
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| 3 | const debug = require('debug')('doctor')
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| 4 |
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| 5 | function hasPerformanceIssue (issue) {
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| 6 | return issue === 'performance'
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| 7 | }
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| 8 |
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| 9 | function hasDataIssue (issue) {
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| 10 | return issue === 'data'
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| 11 | }
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| 12 |
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| 13 | function aggregateMemoryIssue (memory) {
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| 14 | const memoryDataIssue = (
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| 15 | hasDataIssue(memory.external) ||
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| 16 | hasDataIssue(memory.rss) ||
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| 17 | hasDataIssue(memory.heapTotal) ||
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| 18 | hasDataIssue(memory.heapUsed)
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| 19 | )
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| 20 | const memoryPerformanceIssue = (
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| 21 | hasPerformanceIssue(memory.external) ||
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| 22 | hasPerformanceIssue(memory.rss) ||
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| 23 | hasPerformanceIssue(memory.heapTotal) ||
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| 24 | hasPerformanceIssue(memory.heapUsed)
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| 25 | )
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| 26 |
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| 27 | if (memoryDataIssue) {
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| 28 | return 'data'
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| 29 | }
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| 30 | return memoryPerformanceIssue ? 'performance' : 'none'
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| 31 | }
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| 32 |
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| 33 | function issueCategory (issues) {
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| 34 | debug('detected issues', issues)
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| 35 | const memoryIssue = aggregateMemoryIssue(issues.memory)
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| 36 |
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| 37 | let category = 'unknown'
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| 38 | if (hasDataIssue(memoryIssue) || hasDataIssue(issues.cpu) ||
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| 39 | hasDataIssue(issues.handles) || hasDataIssue(issues.delay)) {
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| 40 | category = 'data'
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| 41 | } else if (hasPerformanceIssue(memoryIssue) &&
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| 42 | !hasPerformanceIssue(issues.cpu) &&
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| 43 | !hasPerformanceIssue(issues.handles)) {
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| 44 | category = 'gc'
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| 45 | } else if (!hasPerformanceIssue(memoryIssue) &&
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| 46 | hasPerformanceIssue(issues.delay) &&
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| 47 | !hasPerformanceIssue(issues.cpu) &&
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| 48 | !hasPerformanceIssue(issues.handles)) {
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| 49 | category = 'event-loop'
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| 50 | } else if (!hasPerformanceIssue(memoryIssue) &&
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| 51 | !hasPerformanceIssue(issues.delay) &&
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| 52 | (hasPerformanceIssue(issues.cpu) || hasPerformanceIssue(issues.handles))) {
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| 53 | category = 'io'
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| 54 | } else if (!hasPerformanceIssue(memoryIssue) &&
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| 55 | !hasPerformanceIssue(issues.delay) &&
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| 56 | !hasPerformanceIssue(issues.cpu) &&
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| 57 | !hasPerformanceIssue(issues.handles)) {
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| 58 | category = 'none'
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| 59 | }
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| 60 |
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| 61 | debug('category', category)
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| 62 |
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| 63 | return category
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| 64 | }
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| 65 | module.exports = issueCategory
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