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Added HeapDump support.

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Ylian Saint-Hilaire 2020-03-28 17:28:44 -07:00
parent 1df511d1d4
commit a61acc4890
2 changed files with 19 additions and 0 deletions
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4
meshcentral.js
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@ -2459,6 +2459,10 @@ function mainStart() {
if (allsspi == false) { modules.push('otplib@10.2.3'); } // Google Authenticator support (v10 supports older NodeJS versions).
}
// Setup heapdump support if needed, useful for memory leak debugging
// https://www.arbazsiddiqui.me/a-practical-guide-to-memory-leaks-in-nodejs/
if (config.settings.heapdump === true) { modules.push('heapdump'); }
// Install any missing modules and launch the server
InstallModules(modules, function () { meshserver = CreateMeshCentralServer(config, args); meshserver.Start(); });

15
meshuser.js
View File

@ -690,6 +690,7 @@ module.exports.CreateMeshUser = function (parent, db, ws, req, args, domain, use
switch (cmd) {
case 'help': {
var fin = '', f = '', availcommands = 'help,info,versions,args,resetserver,showconfig,usersessions,closeusersessions,tasklimiter,setmaxtasks,cores,migrationagents,agentstats,webstats,mpsstats,swarmstats,acceleratorsstats,updatecheck,serverupdate,nodeconfig,heapdump,relays,autobackup,backupconfig,dupagents,dispatchtable,badlogins,showpaths,le,lecheck,leevents,dbstats';
if (parent.parent.config.settings.heapdump === true) { availcommands += ',heapdump'; }
availcommands = availcommands.split(',').sort();
while (availcommands.length > 0) {
if (f.length > 80) { fin += (f + ',\r\n'); f = ''; }
@ -699,6 +700,20 @@ module.exports.CreateMeshUser = function (parent, db, ws, req, args, domain, use
r = 'Available commands: \r\n' + fin + '.';
break;
}
case 'heapdump': {
// Heapdump support, see example at:
// https://www.arbazsiddiqui.me/a-practical-guide-to-memory-leaks-in-nodejs/
if (parent.parent.config.settings.heapdump === true) {
var dumpFileName = parent.path.join(parent.parent.datapath, `heapDump-${Date.now()}.heapsnapshot`);
try { ws.send(JSON.stringify({ action: 'serverconsole', value: "Generating dump file at: " + dumpFileName, tag: command.tag })); } catch (ex) { }
require('heapdump').writeSnapshot(dumpFileName, (err, filename) => {
try { ws.send(JSON.stringify({ action: 'serverconsole', value: "Done.", tag: command.tag })); } catch (ex) { }
});
} else {
r = "Heapdump not supported, add \"heapdump\":true to settings section of config.json.";
}
break;
}
case 'le': {
if (parent.parent.letsencrypt == null) {
r = "Let's Encrypt not in use.";