@kuflow/kuflow-temporal-workflow-kuflow
Version:
KuFlow SDK :: Temporal workflows for KuFlow.
51 lines • 2.81 kB
JavaScript
;
/**
* The MIT License
* Copyright © 2021-present KuFlow S.L.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.uuid7 = uuid7;
function uuid7() {
// Return the hexadecimal text representation of number `n`, padded with zeroes to be of length `p`
const hx = (n, p) => n.toString(16).padStart(p, '0');
// Current timestamp in ms, we only take into account only the first 48bits
const now = Date.now();
if (!Number.isInteger(now) || now < 1 || now > 0xffffffffffffn) {
throw new RangeError('`timestamp` must be a 48-bit positive integer');
}
const timestamp = BigInt(now);
// Create a view backed by a 16-byte buffer
const view = new DataView(new ArrayBuffer(16));
// Timestamp (store timestamp using 48bits)
view.setUint32(0, Number((timestamp >> 16n) & 0xffffffffn));
view.setUint16(4, Number(timestamp & 0xffffn));
// Random bytes
view.setUint32(6, (Math.random() * 0x100000000) >>> 0); // 4 bytes - 32 bits random number
view.setUint32(10, (Math.random() * 0x100000000) >>> 0); // 4 bytes - 32 bits random number
view.setUint16(14, (Math.random() * 0x10000) >>> 0); // 2 bytes - 16 bits random number
// Patch the 6th byte to reflect a version 7 UUID
view.setUint8(6, (view.getUint8(6) & 0xf) | 0x70);
// Patch the 8th byte to reflect a variant 1 UUID (version 4 UUIDs are)
view.setUint8(8, (view.getUint8(8) & 0x3f) | 0x80);
// Compile the canonical textual form from the array data
return `${hx(view.getUint32(0), 8)}-${hx(view.getUint16(4), 4)}-${hx(view.getUint16(6), 4)}-${hx(view.getUint16(8), 4)}-${hx(view.getUint32(10), 8)}${hx(view.getUint16(14), 4)}`;
}
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