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DO NOT MERGE: Using node-memwatch to find a memory leak #2253

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DO NOT MERGE: Using node-memwatch to find a memory leak #2253

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425497c
Using node-memwatch to find a memory leak
AlfredoG87 Mar 27, 2024
f1543b7
Using node-memwatch to find a memory leak, added force GC
AlfredoG87 Mar 27, 2024
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55 changes: 51 additions & 4 deletions package-lock.json
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1 change: 1 addition & 0 deletions package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -63,6 +63,7 @@
"prepare": "husky install"
},
"dependencies": {
"@airbnb/node-memwatch": "^2.0.0",
"@hashgraph/hedera-local": "^2.19.1",
"@open-rpc/schema-utils-js": "^1.16.1",
"@types/find-config": "^1.0.4",
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26 changes: 26 additions & 0 deletions packages/server/src/server.ts
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Expand Up @@ -27,6 +27,9 @@ import path from 'path';
import fs from 'fs';
import { v4 as uuid } from 'uuid';
import { formatRequestIdMessage } from './formatters';
import memwatch from '@airbnb/node-memwatch';

let HeapDiff = memwatch.HeapDiff;

const mainLogger = pino({
name: 'hedera-json-rpc-relay',
Expand Down Expand Up @@ -64,6 +67,29 @@ const methodResponseHistogram = new Histogram({
// set cors
app.getKoaApp().use(cors());

// leak detection middleware

memwatch.on('leak', function (info) {
logger.error('Memory leak detected: --> ' + JSON.stringify(info, null, 2));
});

memwatch.on('stats', function (stats) {
logger.error('Memory stats: --> ' + JSON.stringify(stats, null, 2));
});

app.getKoaApp().use(async (ctx, next) => {
// force garbage collection
memwatch.gc();
logger.info('GC forced');
let hd = new HeapDiff();
await next();
// force garbage collection
memwatch.gc();
logger.info('GC forced');
const diff = hd.end();
logger.info('Heap diff: -->' + JSON.stringify(diff, null, 2));
});

/**
* middleware for non POST request timing
*/
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