mirror of
https://github.com/knex/knex.git
synced 2025-07-09 10:01:22 +00:00
e250260235
* Added stress test, which uses TCP proxy to simulate flaky connections * Added test code for mysql and mariadb drivers * Dropped trying to figure out support for mariasql driver * Bunch of tests to make knex fail if connections are breaking randomly * Added marker to printout logs before app crash * Fixed mysql acquire connection and destroy conneciton code Acquire connection did bind error handler too late and didn't free it on success. Destroy did free event listeners before connection end was called, so error during connection end leaked out.
98 lines
2.4 KiB
JavaScript
98 lines
2.4 KiB
JavaScript
/**
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* Test case when mysql2 driver strangely exits when one tries to send query
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* to dead connection.
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*/
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const Bluebird = require('bluebird');
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const toxiproxy = require('toxiproxy-node-client');
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const toxicli = new toxiproxy.Toxiproxy('http://localhost:8474');
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const rp = require('request-promise-native');
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// drops old toxicproxy and creates new
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async function recreateProxy(serviceName, listenPort, proxyToPort) {
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try {
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await rp.delete({
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url: `${toxicli.host}/proxies/${serviceName}`
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});
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} catch(err) {
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// there was no proxy by that name... its ok
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}
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const proxy = await toxicli.createProxy({
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name: serviceName,
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listen: `0.0.0.0:${listenPort}`,
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upstream: `${serviceName}:${proxyToPort}`
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});
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}
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async function insanelyParanoidQuery(con) {
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console.log('sending query');
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const res = await new Promise((resolve,reject) => {
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try {
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con.query('select 1', [], function(err, rows, fields) {
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if (err) {
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reject(err);
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} else {
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resolve(rows);
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}
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});
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} catch(err) {
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console.log('Huh synchronous exception?! (shouldnt be possible)');
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reject(err);
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}
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});
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console.log(res);
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}
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async function main() {
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// create proxy from localhost:23306 -> mysqldocker:3306
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await recreateProxy('mysql', 23306, 3306);
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// ------------- setup mysql2 db driver connection
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const mysql2 = require('mysql2'); // with mysql this works...
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const mysql2Con = await mysql2.createConnection({
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host: 'localhost',
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user: 'root',
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password: 'mysqlrootpassword',
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port: 23306
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});
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mysql2Con.on('error', function(err) {
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console.log("I'm dead", err);
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})
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console.log('Going to cut connections');
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// cut connection during recreate
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await recreateProxy('mysql', 23306, 3306);
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console.log('Proxy recreated... start waiting');
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// wait forever
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while(true) {
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await Bluebird.delay(1000);
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try {
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await insanelyParanoidQuery(mysql2Con);
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} catch (err) {
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console.log('query failed:', err);
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}
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await recreateProxy('mysql', 23306, 3306);
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}
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}
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main()
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.then(() => console.log('Process stopped normally'))
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.catch(err => {
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console.log('Process stopped to failure', err);
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})
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console.log('Waiting for eventloop to stop...');
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process.on('uncaughtException', function (err) {
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console.log('uncaughtException', err);
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});
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process.on('exit', function () {
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console.log('Did someone call process.exit() or wat? exitCode:', process.exitCode);
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}); |