handle single address for faucet, handle send token from holder itself if distributor is empty (#568)

Author: Anmol1696

starship/charts/devnet/templates/registry.yaml

@@ -145,7 +145,7 @@ data:
         ],
         "coingecko_id": "{{ $chain.name }}"
       }
-    ]
+      ]
       {{- end }}
     }
   chain.json: |-

starship/faucet/app.go

@@ -208,7 +208,12 @@ func (a *AppServer) Run() error {
 		}
 	}()
 
-	// start distributor
+	// start distributor if distrubutor.Addrs is not empty
+	if a.distributor.Addrs == nil {
+		a.logger.Info("no distributor addresses provided")
+		return nil
+	}
+
 	go func() {
 		for {
 			disStatus, err := a.distributor.Status()

starship/faucet/distributor.go

@@ -163,8 +163,13 @@ func (d *Distributor) Status() ([]AccountBalances, error) {
 
 // SendTokens will transfer tokens to the given address and denom from one of distributor addresses
 func (d *Distributor) SendTokens(address string, denom string) error {
-	randIndex := rand.Intn(len(d.Addrs))
 	amount := d.CreditCoins.GetDenomAmount(denom)
+
+	if d.Addrs == nil {
+		return d.Holder.SendTokens(address, denom, amount)
+	}
+
+	randIndex := rand.Intn(len(d.Addrs))
 	if amount == "" {
 		return fmt.Errorf("invalid denom: %s, expected denoms: %s", denom, d.CreditCoins.GetDenoms())
 	}