You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
continuous-integration/drone/push Build is passing
Details
Reviewed-on: #6 Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com> Co-authored-by: Andrew Thornton <art27@cantab.net> Co-committed-by: Andrew Thornton <art27@cantab.net> |
8 months ago | |
---|---|---|
.circleci | 4 years ago | |
.drone.yml | 3 years ago | |
.gitignore | 3 years ago | |
LICENSE | 4 years ago | |
README.md | 3 years ago | |
error.go | 3 years ago | |
go.mod | 3 years ago | |
go.sum | 3 years ago | |
queue.go | 8 months ago | |
queue_test.go | 3 years ago | |
set.go | 8 months ago | |
set_test.go | 3 years ago | |
uniquequeue.go | 8 months ago | |
uniquequeue_test.go | 3 years ago |
README.md
levelqueue
Level queue is a simple queue golang library base on go-leveldb.
Installation
go get gitea.com/lunny/levelqueue
Usage
queue, err := levelqueue.Open("./queue")
err = queue.RPush([]byte("test"))
// pop an element from left of the queue
data, err = queue.LPop()
// if handle success, element will be pop, otherwise it will be keep
queue.LHandle(func(dt []byte) error{
return nil
})
You can now create a Set from a leveldb:
set, err := levelqueue.OpenSet("./set")
added, err:= set.Add([]byte("member1"))
has, err := set.Has([]byte("member1"))
members, err := set.Members()
removed, err := set.Remove([]byte("member1"))
And you can create a UniqueQueue from a leveldb:
queue, err := levelqueue.OpenUnique("./queue")
err := queue.RPush([]byte("member1"))
err = queue.LPush([]byte("member1"))
// Will return ErrAlreadyInQueue
// and so on.
Creating Queues, UniqueQueues and Sets from already open DB
If you have an already open DB you can create these from this using the
NewQueue
, NewUniqueQueue
and NewSet
functions.