1 files changed, 26 insertions, 0 deletions
diff --git a/interfaces/worker/watcher.go b/interfaces/worker/watcher.go
new file mode 100644
index 00000000..ce2c1c5a
--- /dev/null
+++ b/interfaces/worker/watcher.go
@@ -0,0 +1,26 @@
+package worker
+
+import "context"
+
+type Watcher interface {
+	// AddToWatch used to add stack to wait its state
+	AddToWatch(workers []BaseProcess) error
+
+	// GetFreeWorker provide first free worker
+	GetFreeWorker(ctx context.Context) (BaseProcess, error)
+
+	// PutWorker enqueues worker back
+	PushWorker(w BaseProcess)
+
+	// AllocateNew used to allocate new worker and put in into the WorkerWatcher
+	AllocateNew() error
+
+	// Destroy destroys the underlying stack
+	Destroy(ctx context.Context)
+
+	// WorkersList return all stack w/o removing it from internal storage
+	WorkersList() []BaseProcess
+
+	// RemoveWorker remove worker from the stack
+	RemoveWorker(wb BaseProcess) error
+}