http://eventstore.js.org/
The project goal is to provide an eventstore implementation for node.js:
load and store events via EventStream object
event dispatching to your publisher (optional)
supported Dbs (inmemory, mongodb, redis, tingodb, azuretable)
snapshot support
query your events
Copied from the NHibernate implementation
https://github.com/nhibernate/nhibernate-core/blob/master/src/NHibernate/Id/GuidCombGenerator.cs
public class GuidCombGenerator
{
public static Guid GenerateComb()
{
byte[] guidArray = Guid.NewGuid().ToByteArray();
DateTime baseDate = new DateTime(1900, 1, 1);
DateTime now = DateTime.Now;
// Get the days and milliseconds which will be used to build the byte string
TimeSpan days = new TimeSpan(now.Ticks - baseDate.Ticks);
TimeSpan msecs = now.TimeOfDay;
// Convert to a byte array
// Note that SQL Server is accurate to 1/300th of a millisecond so we divide by 3.333333
byte[] daysArray = BitConverter.GetBytes(days.Days);
byte[] msecsArray = BitConverter.GetBytes((long) (msecs.TotalMilliseconds / 3.333333));
// Reverse the bytes to match SQL Servers ordering
Array.Reverse(daysArray);
Array.Reverse(msecsArray);
// Copy the bytes into the guid
Array.Copy(daysArray, daysArray.Length - 2, guidArray, guidArray.Length - 6, 2);
Array.Copy(msecsArray, msecsArray.Length - 4, guidArray, guidArray.Length - 4, 4);
return new Guid(guidArray);
}
}
// For use with EventStore or something...
let eventId = NSUUID().UUIDString
println("The event id: " + eventId)
func isoTimestamp() -> String
{
let dateFormatter = NSDateFormatter()
// dateFormatter.timeZone = NSTimeZone.localTimeZone()
// C# "yyyy-MM-ddTHH:mm:ss.fffZ"
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"
return dateFormatter.stringFromDate(NSDate())
}