New returns a new lock with the provided arguments.

NewEtcdLockClient creates a new EtcdLockClient.

SemaphorePrefix is the key in etcd where the semaphore will be stored.

ErrExist is the error returned if a holder with the specified id is already holding the semaphore.

ErrNotExist is the error returned if there is no holder with the specified id holding the semaphore.

EtcdLockClient is a wrapper around the etcd client that provides simple primitives to operate on the internal semaphore and holders structs through etcd.

Lock takes care of locking in generic clients.

Semaphore is a struct representation of the information held by the semaphore.

KeysAPI is the minimum etcd client.KeysAPI interface EtcdLockClient needs to do its job.

LockClient is a generic interface for a lock.