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async_hooks: add AsyncResource.bind utility
Creates an internal AsyncResource and binds a function to it, ensuring that the function is invoked within execution context in which bind was called. PR-URL: nodejs#34574 Reviewed-By: Stephen Belanger <[email protected]> Reviewed-By: Gus Caplan <[email protected]> Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Andrey Pechkurov <[email protected]> Reviewed-By: Gerhard Stöbich <[email protected]>
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Original file line number | Diff line number | Diff line change |
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'use strict'; | ||
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const common = require('../common'); | ||
const assert = require('assert'); | ||
const { AsyncResource, executionAsyncId } = require('async_hooks'); | ||
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const fn = common.mustCall(AsyncResource.bind(() => { | ||
return executionAsyncId(); | ||
})); | ||
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setImmediate(() => { | ||
const asyncId = executionAsyncId(); | ||
assert.notStrictEqual(asyncId, fn()); | ||
}); | ||
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const asyncResource = new AsyncResource('test'); | ||
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[1, false, '', {}, []].forEach((i) => { | ||
assert.throws(() => asyncResource.bind(i), { | ||
code: 'ERR_INVALID_ARG_TYPE' | ||
}); | ||
}); | ||
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const fn2 = asyncResource.bind((a, b) => { | ||
return executionAsyncId(); | ||
}); | ||
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assert.strictEqual(fn2.asyncResource, asyncResource); | ||
assert.strictEqual(fn2.length, 2); | ||
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setImmediate(() => { | ||
const asyncId = executionAsyncId(); | ||
assert.strictEqual(asyncResource.asyncId(), fn2()); | ||
assert.notStrictEqual(asyncId, fn2()); | ||
}); |