added pool watcher capability

1 files changed, 6 insertions, 2 deletions

diff --git a/watcher.go b/watcher.go
index 7d9c6060..4527fe68 100644
--- a/watcher.go
+++ b/watcher.go
@@ -1,6 +1,10 @@
 package roadrunner
 
-// disconnect??
+// Watcher observes pool state and decides if any worker must be destroyed.
 type Watcher interface {
-	// ?? lock on pool
+	// Lock watcher on given pool instance.
+	Attach(p Pool) Watcher
+
+	// Detach pool watching.
+	Detach()
 }