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async_hooks: introduce async-context API

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Adding AsyncLocalStorage class to async_hooks
 module.
This API provide a simple CLS-like set
of features.

Co-authored-by: Andrey Pechkurov <apechkurov@gmail.com>

PR-URL: https://github.com/nodejs/node/pull/26540
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
This commit is contained in:
vdeturckheim 2019-03-01 21:31:36 +01:00
parent 72b6cea25d
commit 9c702922cd
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GPG key ID: 78A7A2EB0AA81A1B
13 changed files with 667 additions and 3 deletions
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21
test/async-hooks/test-async-local-storage-enable-disable.js Normal file
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'use strict';
require('../common');
const assert = require('assert');
const { AsyncLocalStorage } = require('async_hooks');
const asyncLocalStorage = new AsyncLocalStorage();
asyncLocalStorage.runSyncAndReturn(() => {
asyncLocalStorage.getStore().set('foo', 'bar');
process.nextTick(() => {
assert.strictEqual(asyncLocalStorage.getStore().get('foo'), 'bar');
asyncLocalStorage.disable();
assert.strictEqual(asyncLocalStorage.getStore(), undefined);
process.nextTick(() => {
assert.strictEqual(asyncLocalStorage.getStore(), undefined);
asyncLocalStorage.runSyncAndReturn(() => {
assert.notStrictEqual(asyncLocalStorage.getStore(), undefined);
});
});
});
});