Add sync => go-sync

sync/lock/lock.go

@@ -0,0 +1,27 @@
+// Package lock provides distributed locking
+package lock
+
+import (
+	"time"
+)
+
+// Lock is a distributed locking interface
+type Lock interface {
+	// Acquire a lock with given id
+	Acquire(id string, opts ...AcquireOption) error
+	// Release the lock with given id
+	Release(id string) error
+}
+
+type Options struct {
+	Nodes  []string
+	Prefix string
+}
+
+type AcquireOptions struct {
+	TTL  time.Duration
+	Wait time.Duration
+}
+
+type Option func(o *Options)
+type AcquireOption func(o *AcquireOptions)