Expose utility metrics to go-sdk (#132)

README.md

@@ -139,7 +139,10 @@ hmy --node="https://api.s1.p.hmny.io" staking collect-rewards \
 17. Check active validators
 hmy --node="https://api.s1.p.hmny.io" blockchain validator all-active
 
-18. Check in-memory record of failed staking transactions
+18. Get current staking utility metrics
+hmy --node="https://api.s0.p.hmny.io" blockchain utility-metrics
+
+19. Check in-memory record of failed staking transactions
 hmy failures staking
 ```
 

cmd/subcommands/blockchain.go

@@ -161,6 +161,14 @@ High level information about transaction, like blockNumber, blockHash
 			noLatest = true
 			return request(rpc.Method.ResendCX, []interface{}{args[0]})
 		},
+	}, {
+		Use:   "utility-metrics",
+		Short: "Current utility metrics",
+		Args:  cobra.ExactArgs(1),
+		Long:  `Current staking utility metrics`,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return request(rpc.Method.GetCurrentUtilityMetrics, []interface{}{})
+		},
 	},
 		accountHistorySubCmd,
 	}

pkg/rpc/methods.go

@@ -60,6 +60,7 @@ type rpcEnumList struct {
 	GetPendingTxnsInPool                method
 	GetPendingCrosslinks                method
 	GetPendingCXReceipts                method
+	GetCurrentUtilityMetrics            method
 	ResendCX                            method
 }
 
@@ -113,6 +114,7 @@ var Method = rpcEnumList{
 	GetPendingTxnsInPool:                "hmy_pendingTransactions",
 	GetPendingCrosslinks:                "hmy_getPendingCrossLinks",
 	GetPendingCXReceipts:                "hmy_getPendingCXReceipts",
+	GetCurrentUtilityMetrics:            "hmy_getCurrentUtilityMetrics",
 	ResendCX:                            "hmy_resendCx",
 }