ping often

synced-pool.go

@@ -85,6 +85,27 @@ func NewSyncedPool(local *GrainLocalPool, hostname string, d Discovery) (*Synced
 		remotes:     make([]*RemoteHost, 0),
 		remoteIndex: make(map[CartId]*RemoteGrainPool),
 	}
+	pingTimer := time.NewTicker(time.Second)
+	go func() {
+		for {
+			<-pingTimer.C
+			for i, r := range pool.remotes {
+				err := DoPing(r.connection)
+				if err != nil {
+					r.MissedPings++
+					log.Printf("Error pinging remote %s: %v\n, missed pings: %d", r.Host, err, r.MissedPings)
+					if r.MissedPings > 3 {
+						log.Printf("Removing remote %s\n", r.Host)
+
+						pool.remotes = append(pool.remotes[:i], pool.remotes[i+1:]...)
+
+					}
+				} else {
+					r.MissedPings = 0
+				}
+			}
+		}
+	}()
 	if d != nil {
 		discoveryTimer := time.NewTicker(time.Second * 5)
 		go func() {
@@ -127,21 +148,7 @@ func NewSyncedPool(local *GrainLocalPool, hostname string, d Discovery) (*Synced
 					log.Printf("Error adding undiscovered remote %s: %v\n", h, err)
 				}
 			}
-			for i, r := range pool.remotes {
-				err := DoPing(r.connection)
-				if err != nil {
-					r.MissedPings++
-					log.Printf("Error pinging remote %s: %v\n, missed pings: %d", r.Host, err, r.MissedPings)
-					if r.MissedPings > 3 {
-						log.Printf("Removing remote %s\n", r.Host)
 
-						pool.remotes = append(pool.remotes[:i], pool.remotes[i+1:]...)
-
-					}
-				} else {
-					r.MissedPings = 0
-				}
-			}
 		}()
 	}
 	go func() {