git-bug/util/lamport/clock.go
Michael Muré 88ad7e606f
repository: remove tie to Bug, improved and reusable testing
- allow the creation of arbitrary Lamport clocks, freeing the way to new entities and removing Bug specific (upper layer) code.
- generalize the memory-only and persisted Lamport clocks behind a common interface
- rework the tests to provide reusable testing code for a Repo, a Clock, a Config, opening a path to add a new Repo implementation more easily
- test previously untested components with those new tests

Note: one problem found during this endeavor is that `identity.Version` also need to store one time + Lamport time for each other Entity (Bug, config, PR ...). This could possibly done without breaking change but it would be much easier to wait for https://github.com/MichaelMure/git-bug-migration to happen.
2020-06-26 19:14:22 +02:00

16 lines
478 B
Go

package lamport
// Time is the value of a Clock.
type Time uint64
// Clock is a Lamport logical clock
type Clock interface {
// Time is used to return the current value of the lamport clock
Time() Time
// Increment is used to return the value of the lamport clock and increment it afterwards
Increment() (Time, error)
// Witness is called to update our local clock if necessary after
// witnessing a clock value received from another process
Witness(time Time) error
}