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Merged
Shoogn merged 1 commit into from
Mar 13, 2025
Merged

Enhancing the two helper methods when fetching the generation time of… #5

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7 changes: 6 additions & 1 deletion src/core/SnowflakOptions.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -7,8 +7,13 @@ public class SnowflakOptions
/// <summary>
/// This could be data center id or server id,
/// or any other unique things in your webfarm
/// Be sure to set this property with number greater than zero
/// Be sure to set this property with number greater than zero.
/// </summary>
public int DataCenterId { get; set; }

/// <summary>
/// Get or set the value that determined whether using console log or not, the default value is <c>false</c>.
/// </summary>
public bool UseConsoleLog { get; set; }
}
}
12 changes: 12 additions & 0 deletions src/core/SnowflakeId.cs
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Expand Up @@ -6,7 +6,19 @@ namespace SnowflakeId.Core
{
public class SnowflakeId
{
/// <summary>
/// Get or set snowflakeId.
/// </summary>
public long Id { get; set; }

/// <summary>
/// Get or set the generation datetime of the snowflakeId.
/// </summary>
public DateTime GeneratedDateTime { get; set; }

/// <summary>
/// Get or set the data centerid.
/// </summary>
public int DataCenterId { get; set; }
}
}
31 changes: 17 additions & 14 deletions src/core/SnowflakeIdService.cs
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Expand Up @@ -50,14 +50,14 @@ public virtual long GenerateSnowflakeId()

if (currentTimestamp < _lastTimestamp)
{
_logger.LogError("error in the server clock, the current timestamp should be bigger than generated one, current timestamp is: {0}, and the last generated timestamp is: {1}", currentTimestamp, _lastTimestamp);
if (_snowflakOptions.UseConsoleLog)
_logger.LogError("error in the server clock, the current timestamp should be bigger than generated one, current timestamp is: {0}, and the last generated timestamp is: {1}", currentTimestamp, _lastTimestamp);
throw new InvalidOperationException("Error_In_The_Server_Clock");
}

if (currentTimestamp == _lastTimestamp)
{
// generate a new timestamp when the _sequence is reached the ( 4096 - 1 )

_sequence = (_sequence + 1) & SnowflakeIdConfig.MaxSequenceId;

if (_sequence == 0)
Expand All @@ -73,7 +73,8 @@ public virtual long GenerateSnowflakeId()
_lastTimestamp = currentTimestamp;

long result = (currentTimestamp << _timeStampShift) | ((long)_snowflakOptions.DataCenterId << _machaineIdShift) | (_sequence);
_logger.LogInformation("the gnerated unique id is {0}", result);
if (_snowflakOptions.UseConsoleLog)
_logger.LogInformation("the gnerated unique id is {0}", result);
return result;
}
}
Expand All @@ -94,14 +95,14 @@ public virtual Task<long> GenerateSnowflakeIdAsync(CancellationToken cancellatio

if (currentTimestamp < _lastTimestamp)
{
_logger.LogError("error in the server clock, the current timestamp should be bigger than generated one, current timestamp is: {0}, and the last generated timestamp is: {1}", currentTimestamp, _lastTimestamp);
if (_snowflakOptions.UseConsoleLog)
_logger.LogError("error in the server clock, the current timestamp should be bigger than generated one, current timestamp is: {0}, and the last generated timestamp is: {1}", currentTimestamp, _lastTimestamp);
throw new InvalidOperationException("Error_In_The_Server_Clock");
}

if (currentTimestamp == _lastTimestamp)
{
// generate a new timestamp when the _sequence is reached the ( 4096 - 1 )

_sequence = (_sequence + 1) & SnowflakeIdConfig.MaxSequenceId;

if (_sequence == 0)
Expand All @@ -117,7 +118,8 @@ public virtual Task<long> GenerateSnowflakeIdAsync(CancellationToken cancellatio
_lastTimestamp = currentTimestamp;

long result = (currentTimestamp << _timeStampShift) | ((long)_snowflakOptions.DataCenterId << _machaineIdShift) | (_sequence);
_logger.LogInformation("the gnerated unique id is {0}", result);
if (_snowflakOptions.UseConsoleLog)
_logger.LogInformation("the gnerated unique id is {0}", result);
return Task.FromResult(result);
}
finally
Expand Down Expand Up @@ -147,6 +149,7 @@ public virtual SnowflakeId GetSnowflakeById(long snowflakeId)

result.GeneratedDateTime = snowflakeIdGeneratedTime;
result.Id = snowflakeId;
result.DataCenterId = GetDataCenterIdBySnowflakeId(snowflakeId);
return result;

}
Expand Down Expand Up @@ -190,10 +193,10 @@ public virtual long GetSecondsSinceUnixEpochFromId(long snowflakeId)
return 0L;
}

string result = Convert.ToString(snowflakeId, 2).PadLeft(64, '0');
string getTimestampInbit = result.Substring(1, 41);
long timestamp = Convert.ToInt64(getTimestampInbit, 2);
return timestamp;
// 41 bits of 1s, will shifted left by 22 bits.
long timestampMask = 0x1FFFFFFFFFF;
long timeStamp = (snowflakeId >> _timeStampShift) & timestampMask;
return timeStamp;
}

/// <summary>
Expand All @@ -208,11 +211,11 @@ public virtual int GetDataCenterIdBySnowflakeId(long snowflakeId)
return 0;
}

string result = Convert.ToString(snowflakeId, 2).PadLeft(64, '0');
string dataCenterInBits = result.Substring(42, 10);
int dataCenterId = Convert.ToInt32(dataCenterInBits, 2);
return dataCenterId;
// 10 bits mask (0b1111111111) will shifted left by 12 bits.
long dataCenterIdMask = 0x3FF;

long dataCenterId = (snowflakeId >> _machaineIdShift) & dataCenterIdMask;
return (int)dataCenterId;
}


Expand Down