feat(cluster_config): change field from int to float64

This is modified for better flexibility, especially for testing.

server/cluster_config.go

@@ -12,16 +12,16 @@ const (
 	MinActiveSize = 3
 
 	// DefaultRemoveDelay is the default elapsed time before removal.
-	DefaultRemoveDelay = int((30 * time.Minute) / time.Second)
+	DefaultRemoveDelay = float64((30 * time.Minute) / time.Second)
 
 	// MinRemoveDelay is the minimum remove delay allowed.
-	MinRemoveDelay = int((2 * time.Second) / time.Second)
+	MinRemoveDelay = float64((2 * time.Second) / time.Second)
 
 	// DefaultSyncInterval is the default interval for cluster sync.
-	DefaultSyncInterval = int((30 * time.Minute) / time.Second)
+	DefaultSyncInterval = float64((30 * time.Minute) / time.Second)
 
 	// MinSyncInterval is the minimum sync interval allowed.
-	MinSyncInterval = int((1 * time.Second) / time.Second)
+	MinSyncInterval = float64((1 * time.Second) / time.Second)
 )
 
 // ClusterConfig represents cluster-wide configuration settings.
@@ -33,11 +33,11 @@ type ClusterConfig struct {
 
 	// RemoveDelay is the amount of time, in seconds, after a node is
 	// unreachable that it will be swapped out as a standby node.
-	RemoveDelay int `json:"removeDelay"`
+	RemoveDelay float64 `json:"removeDelay"`
 
 	// SyncInterval is the amount of time, in seconds, between
 	// cluster sync when it runs in standby mode.
-	SyncInterval int `json:"syncInterval"`
+	SyncInterval float64 `json:"syncInterval"`
 }
 
 // NewClusterConfig returns a cluster configuration with default settings.

server/peer_server.go

@@ -817,7 +817,7 @@ func (s *PeerServer) monitorPeerActivity() {
 
 		// Check last activity for all peers.
 		now := time.Now()
-		removeDelay := time.Duration(s.ClusterConfig().RemoveDelay) * time.Second
+		removeDelay := time.Duration(int64(s.ClusterConfig().RemoveDelay * float64(time.Second)))
 		peers := s.raftServer.Peers()
 		for _, peer := range peers {
 			// If the last response from the peer is longer than the remove delay

server/peer_server_handlers.go

@@ -206,10 +206,10 @@ func (ps *PeerServer) setClusterConfigHttpHandler(w http.ResponseWriter, req *ht
 		config.ActiveSize = int(activeSize)
 	}
 	if removeDelay, ok := m["removeDelay"].(float64); ok {
-		config.RemoveDelay = int(removeDelay)
+		config.RemoveDelay = removeDelay
 	}
 	if syncInterval, ok := m["syncInterval"].(float64); ok {
-		config.SyncInterval = int(syncInterval)
+		config.SyncInterval = syncInterval
 	}
 
 	// Issue command to update.

server/standby_server.go

@@ -119,8 +119,8 @@ func (s *StandbyServer) SyncCluster(peers []string) error {
 	return nil
 }
 
-func (s *StandbyServer) SetSyncInterval(second int) {
-	s.syncInterval = time.Duration(second) * time.Second
+func (s *StandbyServer) SetSyncInterval(second float64) {
+	s.syncInterval = time.Duration(int64(second * float64(time.Second)))
 }
 
 func (s *StandbyServer) ClusterLeader() *machineMessage {