Add selected cells to debug logging

Author: timvaillancourt

pkg/throttle/throttler.go

@@ -327,7 +327,9 @@ func (throttler *Throttler) refreshMySQLInventory() error {
 				if err != nil {
 					return log.Errorf("Unable to get vitess hosts from %s, %s/%s: %+v", clusterSettings.VitessSettings.API, keyspace, shard, err)
 				}
-				log.Debugf("Read %+v hosts from vitess %s, %s/%s", len(tablets), clusterSettings.VitessSettings.API, keyspace, shard)
+				log.Debugf("Read %+v hosts from vitess %s, %s/%s, cells=%s", len(tablets), clusterSettings.VitessSettings.API,
+					keyspace, shard, strings.Join(clusterSettings.VitessSettings.Cells, ","),
+				)
 				clusterProbes := &mysql.ClusterProbes{
 					ClusterName:      clusterName,
 					IgnoreHostsCount: clusterSettings.IgnoreHostsCount,

pkg/vitess/api_client.go

@@ -22,7 +22,7 @@ type Tablet struct {
 	Type          topodata.TabletType   `json:"type,omitempty"`
 }
 
-// HasValidCell returns a bool reflecting if a tablet type is in a valid cell
+// HasValidCell returns a bool reflecting if a tablet is in a valid Vitess cell
 func (t Tablet) HasValidCell(validCells []string) bool {
 	cells := make([]string, 0)
 	for _, cell := range validCells {