go-etcd-lock

etcd-lock

For version 0.4.0 of etcd the module lock has been deprecated.

This is a basic client implementation of lock based on the logics in mod/lock

This library doesn't provide the *etcd.Client because it doesn't want to manage the condfiguration of it (TLS or not, endpoints etc.) So a client has to exist previously

Import

# Master via standard import
get get github.com/Scalingo/go-etcd-lock

# Last stable is v0 via gopkg.in
go get gopkg.in/Scalingo/go-etcd-lock.v0/lock

Example

l, err := lock.Acquire(client, "/name", 60)
if lockErr, ok := err.(*lock.Error); ok {
  // Key already locked
  fmt.Println(lockErr)
  return
} else if err != nil {
  // Communication with etcd has failed or other error
  panic(err)
}

// It's ok, lock is granted for 60 secondes

// When the opration is done we release the lock
err = l.Release()
if err != nil {
  // Something wrong can happen during release: connection problem with etcd
  panic(err)
}

Testing

You need a etcd instance running on localhost:4001, then:

go test ./...