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fix(NODE-4608): prevent parallel monitor checks #3404

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merged 6 commits into from Oct 4, 2022
Merged

fix(NODE-4608): prevent parallel monitor checks #3404

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cdce4bf
test: add tests for MonitorInterval
baileympearson Sep 16, 2022
0ace76c
fix: prevent parallel monitor checks
baileympearson Sep 16, 2022
ecd4aa6
unskip sdam tests
baileympearson Oct 3, 2022
61a9a0a
Unskip flakey tests
baileympearson Oct 3, 2022
52f8e20
unskip ALL tests
baileympearson Oct 3, 2022
d0af115
fix: call callback asynchronously
baileympearson Oct 4, 2022
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4 changes: 4 additions & 0 deletions src/sdam/monitor.ts
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Expand Up @@ -328,6 +328,10 @@ function checkServer(monitor: Monitor, callback: Callback<Document | null>) {

function monitorServer(monitor: Monitor) {
return (callback: Callback) => {
if (monitor.s.state === STATE_MONITORING) {
callback();
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We may want to use process.nextTick(callback) here

return;
}
stateTransition(monitor, STATE_MONITORING);
function done() {
if (!isInCloseState(monitor)) {
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44 changes: 1 addition & 43 deletions .../integration/server-discovery-and-monitoring/server_discovery_and_monitoring.spec.test.ts
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@@ -1,50 +1,8 @@
/* eslint-disable @typescript-eslint/no-non-null-assertion */
import { Socket } from 'net';
import * as path from 'path';

import { loadSpecTests } from '../../spec';
import { runUnifiedSuite } from '../../tools/unified-spec-runner/runner';
import { TestFilter } from '../../tools/unified-spec-runner/schema';
import { sleep } from '../../tools/utils';

const filter: TestFilter = ({ description }) => {
switch (description) {
case 'Network error on Monitor check':
case 'Network timeout on Monitor check':
return 'TODO(NODE-4608): Disallow parallel monitor checks';
default:
return false;
}
};

describe('SDAM Unified Tests', function () {
afterEach(async function () {
if (this.currentTest!.pending) {
return;
}
// TODO(NODE-4573): fix socket leaks
const LEAKY_TESTS = [
'Command error on Monitor handshake',
'Network error on Monitor check',
'Network timeout on Monitor check',
'Network error on Monitor handshake',
'Network timeout on Monitor handshake'
];

await sleep(250);
const sockArray = (process as any)._getActiveHandles().filter(handle => {
// Stdio are instanceof Socket so look for fd to be null
return handle.fd == null && handle instanceof Socket && handle.destroyed !== true;
});
if (!sockArray.length) {
return;
}
for (const sock of sockArray) {
sock.destroy();
}
if (!LEAKY_TESTS.some(test => test === this.currentTest!.title)) {
this.test!.error(new Error(`Test failed to clean up ${sockArray.length} socket(s)`));
}
});
runUnifiedSuite(loadSpecTests(path.join('server-discovery-and-monitoring', 'unified')), filter);
runUnifiedSuite(loadSpecTests(path.join('server-discovery-and-monitoring', 'unified')));
});