28 lines
965 B
JavaScript
28 lines
965 B
JavaScript
function decodeSnowflake(idStr) {
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const id = BigInt(idStr);
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const binary = id.toString(2).padStart(64, '0');
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const timestampShift = 22n;
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const machineIdShift = 12n;
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const sequenceMask = 0xFFFn; // 12 bitów na sekwencję
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const timestamp = (id >> (timestampShift + machineIdShift)) & 0x1FFFFFFFFFFn;
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const machineId = (id >> machineIdShift) & 0x3FFn; // 10 bitów na ID maszyny
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const sequence = id & sequenceMask;
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// Upewnij się, że epoka jest taka sama, jak użyta do generowania Snowflake IDs
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const epoch = BigInt(1288834974657); // Powinna być taka sama, jak w generatorze
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const date = new Date(Number(epoch + (timestamp * 1000n)));
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return {
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timestamp: date,
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machineId: machineId.toString(),
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sequence: sequence.toString(),
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};
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}
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// Użycie
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const idStr = '7160488856901390336'; // Przykładowy identyfikator Snowflake
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const decoded = decodeSnowflake(idStr);
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console.log(decoded);
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