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[cli] Add workaround to set a custom heap snapshot dir (#170756)

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Michael Dokolin 2023-11-08 15:05:21 +01:00 • committed by GitHub
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1
src/dev/build/tasks/os_packages/docker_generator/templates/base/Dockerfile
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@ -128,6 +128,7 @@ COPY --chown=1000:0 config/serverless.oblt.yml /usr/share/kibana/config/serverle
COPY --chown=1000:0 config/serverless.security.yml /usr/share/kibana/config/serverless.security.yml
# Supportability enhancement: enable capturing heap snapshots. See https://nodejs.org/api/cli.html#--heapsnapshot-signalsignal
RUN echo '\n--heapsnapshot-signal=SIGUSR2' >> config/node.options
RUN echo '--diagnostic-dir=./data' >> config/node.options
{{/serverless}}
{{^opensslLegacyProvider}}
RUN sed 's/\(--openssl-legacy-provider\)/#\1/' -i config/node.options

46
src/setup_node_env/heap_snapshot.js Normal file
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@ -0,0 +1,46 @@
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
var getopts = require('getopts');
var path = require('path');
var v8 = require('node:v8');
var worker = require('node:worker_threads');
var execOpts = getopts(process.execArgv);
var envOpts = getopts(process.env.NODE_OPTIONS ? process.env.NODE_OPTIONS.split(/\s+/) : []);
var diagnosticDir = execOpts['diagnostic-dir'] || envOpts['diagnostic-dir'];
var heapSnapshotSignal = execOpts['heapsnapshot-signal'] || envOpts['heapsnapshot-signal'];
var heapSnapshotSerial = 0;
function getHeapSnapshotPath() {
var now = new Date();
var year = now.getFullYear();
var month = String(now.getMonth() + 1).padStart(2, '0');
var day = String(now.getDate()).padStart(2, '0');
var hours = String(now.getHours()).padStart(2, '0');
var minutes = String(now.getMinutes()).padStart(2, '0');
var seconds = String(now.getSeconds()).padStart(2, '0');
var date = `${year}${month}${day}`;
var time = `${hours}${minutes}${seconds}`;
var pid = process.pid;
var threadId = worker.threadId;
var serial = (++heapSnapshotSerial).toString().padStart(3, '0');
return path.join(diagnosticDir, `Heap.${date}.${time}.${pid}.${threadId}.${serial}.heapsnapshot`);
}
if (diagnosticDir && heapSnapshotSignal) {
process.removeAllListeners(heapSnapshotSignal);
process.on(heapSnapshotSignal, function () {
var heapSnapshotPath = getHeapSnapshotPath();
v8.writeHeapSnapshot(heapSnapshotPath);
});
}

2
src/setup_node_env/setup_env.js
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@ -11,6 +11,8 @@ require('./exit_on_warning');
require('./harden');
// The following require statements MUST be executed before any others - END
// @todo Remove when migrated to Node 20 (#162696)
require('./heap_snapshot');
require('symbol-observable');
require('source-map-support').install();
require('./node_version_validator');