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src: add trace points to dns #21840
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src: add trace points to dns #21840
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| 'use strict'; | ||
| const common = require('../common'); | ||
| const assert = require('assert'); | ||
| const cp = require('child_process'); | ||
| const path = require('path'); | ||
| const tmpdir = require('../common/tmpdir'); | ||
| const fs = require('fs'); | ||
| const util = require('util'); | ||
|
|
||
| if (!common.isMainThread) | ||
| common.skip('process.chdir is not available in Workers'); | ||
|
|
||
| const traceFile = 'node_trace.1.log'; | ||
|
|
||
| tmpdir.refresh(); | ||
| process.chdir(tmpdir.path); | ||
|
|
||
| const test_str = 'const dns = require("dns");' + | ||
| 'const options = {' + | ||
| ' family: 4,' + | ||
| ' hints: dns.ADDRCONFIG | dns.V4MAPPED,' + | ||
| '};'; | ||
|
|
||
| const tests = { | ||
| 'lookup': 'dns.lookup("example.com", options, (err, address, family) => {});', | ||
| 'lookupService': 'dns.lookupService("127.0.0.1", 22, ' + | ||
| '(err, hostname, service) => {});', | ||
| 'reverse': 'dns.reverse("8.8.8.8", (err, hostnames) => {});', | ||
| 'resolveAny': 'dns.resolveAny("example.com", (err, res) => {});', | ||
| 'resolve4': 'dns.resolve4("example.com", (err, res) => {});', | ||
| 'resolve6': 'dns.resolve6("example.com", (err, res) => {});', | ||
| 'resolveCname': 'dns.resolveCname("example.com", (err, res) => {});', | ||
| 'resolveMx': 'dns.resolveMx("example.com", (err, res) => {});', | ||
| 'resolveNs': 'dns.resolveNs("example.com", (err, res) => {});', | ||
| 'resolveTxt': 'dns.resolveTxt("example.com", (err, res) => {});', | ||
| 'resolveSrv': 'dns.resolveSrv("example.com", (err, res) => {});', | ||
| 'resolvePtr': 'dns.resolvePtr("example.com", (err, res) => {});', | ||
| 'resolveNaptr': 'dns.resolveNaptr("example.com", (err, res) => {});', | ||
| 'resolveSoa': 'dns.resolveSoa("example.com", (err, res) => {});' | ||
| }; | ||
|
|
||
| for (const tr in tests) { | ||
| const proc = cp.spawnSync(process.execPath, | ||
| [ '--trace-event-categories', | ||
| 'node.dns.native', | ||
| '-e', | ||
| test_str + tests[tr] | ||
| ], | ||
| { encoding: 'utf8' }); | ||
|
|
||
| // Make sure the operation is successful. | ||
| assert.strictEqual(proc.status, 0, `${tr}:\n${util.inspect(proc)}`); | ||
|
|
||
| const file = path.join(tmpdir.path, traceFile); | ||
|
|
||
| // Confirm that trace log file is created. | ||
| assert(common.fileExists(file)); | ||
| const data = fs.readFileSync(file); | ||
| const traces = JSON.parse(data.toString()).traceEvents | ||
| .filter((trace) => trace.cat !== '__metadata'); | ||
|
|
||
| assert(traces.length > 0); | ||
|
|
||
| // DNS native trace events should be generated. | ||
| assert(traces.some((trace) => { | ||
| return (trace.name === tr && trace.pid === proc.pid); | ||
| })); | ||
| } |
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does this change cause any external JS API interface change? I guess not.
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No, this is all internal.