Add "instantsendlocks" to getmempoolinfo RPC (dashpay#3047)

Author: codablock

src/rpc/blockchain.cpp

@@ -1503,6 +1503,7 @@ UniValue mempoolInfoToJSON()
     size_t maxmempool = GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000;
     ret.push_back(Pair("maxmempool", (int64_t) maxmempool));
     ret.push_back(Pair("mempoolminfee", ValueFromAmount(mempool.GetMinFee(maxmempool).GetFeePerK())));
+    ret.push_back(Pair("instantsendlocks", (int64_t)llmq::quorumInstantSendManager->GetInstantSendLockCount()));
 
     return ret;
 }
@@ -1520,6 +1521,7 @@ UniValue getmempoolinfo(const JSONRPCRequest& request)
             "  \"usage\": xxxxx,              (numeric) Total memory usage for the mempool\n"
             "  \"maxmempool\": xxxxx,         (numeric) Maximum memory usage for the mempool\n"
             "  \"mempoolminfee\": xxxxx       (numeric) Minimum fee for tx to be accepted\n"
+            "  \"instantsendlocks\": xxxxx,   (numeric) Number of unconfirmed instant send locks\n"
             "}\n"
             "\nExamples:\n"
             + HelpExampleCli("getmempoolinfo", "")