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1f3426942c
Adds routes to run v8 profiling tools, when running the examples plugins via `--run-examples` See the included README.md for more info
34 lines
1.2 KiB
TypeScript
34 lines
1.2 KiB
TypeScript
/*
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* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
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* or more contributor license agreements. Licensed under the Elastic License
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* 2.0 and the Server Side Public License, v 1; you may not use this file except
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* in compliance with, at your election, the Elastic License 2.0 or the Server
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* Side Public License, v 1.
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*/
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import { Session } from './session';
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interface StartProfilingArgs {
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interval: number;
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}
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// Start a new profile, resolves to a function to stop the profile and resolve
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// the profile data.
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export async function startProfiling(
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session: Session,
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args: StartProfilingArgs
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): Promise<() => any> {
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session.logger.info(`starting cpu profile with args: ${JSON.stringify(args)}`);
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await session.post('Profiler.enable');
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// microseconds, v8 default is 1000
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await session.post('Profiler.setSamplingInterval', args);
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await session.post('Profiler.start');
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// returned function which stops the profile and resolves to the profile data
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return async function stopProfiling() {
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session.logger.info('stopping cpu profile');
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const result: any = await session.post('Profiler.stop');
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return result.profile;
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};
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}
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