Hlc<T> class

A Hybrid Logical Clock implementation. This class trades time precision for a guaranteed monotonically increasing clock in distributed systems. Inspiration: https://cse.buffalo.edu/tech-reports/2014-04.pdf

Implemented types

• Comparable<Hlc>

Constructors

Hlc(int millis, int counter, T nodeId)

Hlc.fromDate(DateTime dateTime, T nodeId)

Hlc.fromLogicalTime(dynamic logicalTime, T nodeId)

Hlc.now(T nodeId)

Hlc.parse(String timestamp, [T idDecoder(String value)?])

factory

Hlc.recv(Hlc<T> canonical, Hlc<T> remote, {int? millis})

Compares and validates a timestamp from a remote system with the local canonical timestamp to preserve monotonicity. Returns an updated canonical timestamp instance. Local wall time will be used if millis isn't supplied.

factory

Hlc.send(Hlc<T> canonical, {int? millis})

Generates a unique, monotonic timestamp suitable for transmission to another system in string format. Local wall time will be used if millis isn't supplied.

factory

Hlc.zero(T nodeId)

Properties

counter → int

final

hashCode → int

The hash code for this object.

no setter, override

logicalTime → int

no setter

millis → int

final

nodeId → T

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

apply({int? millis, int? counter, T? nodeId}) → Hlc

compareTo(Hlc other) → int

Compares this object to another object.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toJson() → String

toString() → String

A string representation of this object.

override

Operators

operator <(dynamic other) → bool

operator <=(dynamic other) → bool

operator ==(Object other) → bool

The equality operator.

override

operator >(dynamic other) → bool

operator >=(dynamic other) → bool