Add sync => go-sync

sync/sync.go

@@ -0,0 +1,41 @@
+// Package sync is a distributed synchronization framework
+package sync
+
+import (
+	"github.com/micro/go-micro/sync/data"
+	"github.com/micro/go-micro/sync/leader"
+	"github.com/micro/go-micro/sync/lock"
+	"github.com/micro/go-micro/sync/task"
+	"github.com/micro/go-micro/sync/time"
+)
+
+// DB provides synchronized access to key-value storage.
+// It uses the data interface and lock interface to
+// provide a consistent storage mechanism.
+type DB interface {
+	// Read value with given key
+	Read(key, val interface{}) error
+	// Write value with given key
+	Write(key, val interface{}) error
+	// Delete value with given key
+	Delete(key interface{}) error
+	// Iterate over all key/vals. Value changes are saved
+	Iterate(func(key, val interface{}) error) error
+}
+
+// Cron is a distributed scheduler using leader election
+// and distributed task runners. It uses the leader and
+// task interfaces.
+type Cron interface {
+	Schedule(task.Schedule, task.Command) error
+}
+
+type Options struct {
+	Leader leader.Leader
+	Lock   lock.Lock
+	Data   data.Data
+	Task   task.Task
+	Time   time.Time
+}
+
+type Option func(o *Options)