Improve streaming API cluster logging (#3370)
* Improve streaming API cluster logging * Less verbose error middleware logging (stack trace useless there) * Fix error logging * Prevent potential issue * Add missing "done()" in catch of Promise.all, websocket heartbeat re-implemented like in example * I actually forgot a done(), the absolute madman
This commit is contained in:
Eugen Rochko
GitHub
parent
2f10e05e24
commit
1245d4fdbc
3 changed files with 67 additions and 47 deletions
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@ -102,6 +102,7 @@
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"sass-loader": "^6.0.3",
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"stringz": "^0.1.2",
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"style-loader": "^0.16.1",
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"throng": "^4.0.0",
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"uuid": "^3.0.1",
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"uws": "^0.14.5",
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"webpack": "^2.4.1",
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@ -1,5 +1,5 @@
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import os from 'os';
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import cluster from 'cluster';
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import throng from 'throng';
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import dotenv from 'dotenv';
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import express from 'express';
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import http from 'http';
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@ -16,6 +16,8 @@ dotenv.config({
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path: env === 'production' ? '.env.production' : '.env',
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});
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log.level = process.env.LOG_LEVEL || 'verbose';
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const dbUrlToConfig = (dbUrl) => {
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if (!dbUrl) {
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return {};
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@ -65,24 +67,15 @@ const redisUrlToClient = (defaultConfig, redisUrl) => {
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}));
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};
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if (cluster.isMaster) {
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// Cluster master
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const core = +process.env.STREAMING_CLUSTER_NUM || (env === 'development' ? 1 : Math.max(os.cpus().length - 1, 1));
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const numWorkers = +process.env.STREAMING_CLUSTER_NUM || (env === 'development' ? 1 : Math.max(os.cpus().length - 1, 1));
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const fork = () => {
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const worker = cluster.fork();
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const startMaster = () => {
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log.info(`Starting streaming API server master with ${numWorkers} workers`);
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};
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worker.on('exit', (code, signal) => {
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log.error(`Worker died with exit code ${code}, signal ${signal} received.`);
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setTimeout(() => fork(), 0);
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});
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};
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const startWorker = (workerId) => {
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log.info(`Starting worker ${workerId}`);
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for (let i = 0; i < core; i++) fork();
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log.info(`Starting streaming API server master with ${core} workers`);
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} else {
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// Cluster worker
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const pgConfigs = {
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development: {
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database: 'mastodon_development',
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@ -130,6 +123,7 @@ if (cluster.isMaster) {
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if (!callbacks) {
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return;
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}
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callbacks.forEach(callback => callback(message));
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});
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@ -215,9 +209,9 @@ if (cluster.isMaster) {
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};
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const errorMiddleware = (err, req, res, next) => {
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log.error(req.requestId, err);
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log.error(req.requestId, err.toString());
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res.writeHead(err.statusCode || 500, { 'Content-Type': 'application/json' });
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res.end(JSON.stringify({ error: err.statusCode ? `${err}` : 'An unexpected error occurred' }));
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res.end(JSON.stringify({ error: err.statusCode ? err.toString() : 'An unexpected error occurred' }));
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};
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const placeholders = (arr, shift = 0) => arr.map((_, i) => `$${i + 1 + shift}`).join(', ');
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@ -249,8 +243,9 @@ if (cluster.isMaster) {
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const targetAccountIds = [unpackedPayload.account.id].concat(unpackedPayload.mentions.map(item => item.id)).concat(unpackedPayload.reblog ? [unpackedPayload.reblog.account.id] : []);
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const accountDomain = unpackedPayload.account.acct.split('@')[1];
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if (req.filteredLanguages.indexOf(unpackedPayload.language) !== -1) {
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if (Array.isArray(req.filteredLanguages) && req.filteredLanguages.includes(unpackedPayload.language)) {
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log.silly(req.requestId, `Message ${unpackedPayload.id} filtered by language (${unpackedPayload.language})`);
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done();
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return;
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}
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@ -271,6 +266,7 @@ if (cluster.isMaster) {
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transmit();
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}).catch(err => {
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done();
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log.error(err);
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});
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});
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@ -309,26 +305,13 @@ if (cluster.isMaster) {
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};
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// Setup stream output to WebSockets
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const streamToWs = (req, ws) => {
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const heartbeat = setInterval(() => {
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// TODO: Can't add multiple listeners, due to the limitation of uws.
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if (ws.readyState !== ws.OPEN) {
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log.verbose(req.requestId, `Ending stream for ${req.accountId}`);
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clearInterval(heartbeat);
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return;
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}
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const streamToWs = (req, ws) => (event, payload) => {
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if (ws.readyState !== ws.OPEN) {
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log.error(req.requestId, 'Tried writing to closed socket');
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return;
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}
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ws.ping();
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}, 15000);
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return (event, payload) => {
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if (ws.readyState !== ws.OPEN) {
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log.error(req.requestId, 'Tried writing to closed socket');
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return;
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}
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ws.send(JSON.stringify({ event, payload }));
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};
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ws.send(JSON.stringify({ event, payload }));
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};
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// Setup stream end for WebSockets
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@ -372,6 +355,12 @@ if (cluster.isMaster) {
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const token = location.query.access_token;
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const req = { requestId: uuid.v4() };
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ws.isAlive = true;
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ws.on('pong', () => {
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ws.isAlive = true;
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});
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accountFromToken(token, req, err => {
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if (err) {
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log.error(req.requestId, err);
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@ -401,16 +390,40 @@ if (cluster.isMaster) {
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});
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});
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const wsInterval = setInterval(() => {
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wss.clients.forEach(ws => {
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if (ws.isAlive === false) {
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ws.terminate();
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return;
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}
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ws.isAlive = false;
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ws.ping('', false, true);
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});
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}, 30000);
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server.listen(process.env.PORT || 4000, () => {
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log.level = process.env.LOG_LEVEL || 'verbose';
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log.info(`Starting streaming API server worker on ${server.address().address}:${server.address().port}`);
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log.info(`Worker ${workerId} now listening on ${server.address().address}:${server.address().port}`);
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});
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process.on('SIGINT', exit);
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process.on('SIGTERM', exit);
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process.on('exit', exit);
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function exit() {
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const onExit = () => {
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log.info(`Worker ${workerId} exiting, bye bye`);
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server.close();
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}
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}
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};
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const onError = (err) => {
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log.error(err);
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};
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process.on('SIGINT', onExit);
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process.on('SIGTERM', onExit);
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process.on('exit', onExit);
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process.on('error', onError);
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};
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throng({
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workers: numWorkers,
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lifetime: Infinity,
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start: startWorker,
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master: startMaster,
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});
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@ -6498,6 +6498,12 @@ text-table@~0.2.0:
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version "0.2.0"
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resolved "https://registry.yarnpkg.com/text-table/-/text-table-0.2.0.tgz#7f5ee823ae805207c00af2df4a84ec3fcfa570b4"
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throng@^4.0.0:
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version "4.0.0"
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resolved "https://registry.yarnpkg.com/throng/-/throng-4.0.0.tgz#983c6ba1993b58eae859998aa687ffe88df84c17"
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dependencies:
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lodash.defaults "^4.0.1"
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through@2, through@^2.3.6:
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version "2.3.8"
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resolved "https://registry.yarnpkg.com/through/-/through-2.3.8.tgz#0dd4c9ffaabc357960b1b724115d7e0e86a2e1f5"
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