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/* | ||
* Licensed to Elasticsearch B.V. under one or more contributor | ||
* license agreements. See the NOTICE file distributed with | ||
* this work for additional information regarding copyright | ||
* ownership. Elasticsearch B.V. licenses this file to you under | ||
* the Apache License, Version 2.0 (the "License"); you may | ||
* not use this file except in compliance with the License. | ||
* You may obtain a copy of the License at | ||
* | ||
* http://www.apache.org/licenses/LICENSE-2.0 | ||
* | ||
* Unless required by applicable law or agreed to in writing, | ||
* software distributed under the License is distributed on an | ||
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
* KIND, either express or implied. See the License for the | ||
* specific language governing permissions and limitations | ||
* under the License. | ||
*/ | ||
|
||
import { inspect } from 'util'; | ||
|
||
import exitHook from 'exit-hook'; | ||
|
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import { ToolingLog } from '../tooling_log'; | ||
import { isFailError } from './fail'; | ||
|
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export type CleanupTask = () => void; | ||
|
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export class Cleanup { | ||
static setup(log: ToolingLog, helpText: string) { | ||
const onUnhandledRejection = (error: any) => { | ||
log.error('UNHANDLED PROMISE REJECTION'); | ||
log.error( | ||
error instanceof Error | ||
? error | ||
: new Error(`non-Error type rejection value: ${inspect(error)}`) | ||
); | ||
process.exit(1); | ||
}; | ||
|
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process.on('unhandledRejection', onUnhandledRejection); | ||
|
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const cleanup = new Cleanup(log, helpText, [ | ||
() => process.removeListener('unhandledRejection', onUnhandledRejection), | ||
]); | ||
|
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cleanup.add(exitHook(() => cleanup.execute())); | ||
|
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return cleanup; | ||
} | ||
|
||
constructor( | ||
private readonly log: ToolingLog, | ||
public helpText: string, | ||
private readonly tasks: CleanupTask[] | ||
) {} | ||
|
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add(task: CleanupTask) { | ||
this.tasks.push(task); | ||
} | ||
|
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execute(topLevelError?: any) { | ||
const tasks = this.tasks.slice(0); | ||
this.tasks.length = 0; | ||
|
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for (const task of tasks) { | ||
try { | ||
task(); | ||
} catch (error) { | ||
this.onError(error); | ||
} | ||
} | ||
|
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if (topLevelError) { | ||
this.onError(topLevelError); | ||
} | ||
} | ||
|
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private onError(error: any) { | ||
if (isFailError(error)) { | ||
this.log.error(error.message); | ||
|
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if (error.showHelp) { | ||
this.log.write(this.helpText); | ||
} | ||
|
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process.exitCode = error.exitCode; | ||
} else { | ||
this.log.error('UNHANDLED ERROR'); | ||
this.log.error(error); | ||
process.exitCode = 1; | ||
} | ||
} | ||
} |
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