Basic electrum stat tracking on /admin (as is available for rpc)

app/api/electrumAddressApi.js

@@ -16,6 +16,9 @@ const ElectrumClient = require('rn-electrum-client');
 
 var electrumClients = [];
 
+global.electrumStats = {};
+
+
 function connectToServers() {
 	return new Promise(function(resolve, reject) {
 		var promises = [];
@@ -167,12 +170,16 @@ function getAddressDetails(address, scriptPubkey, sort, limit, offset) {
 
 function getAddressTxids(addrScripthash) {
 	return new Promise(function(resolve, reject) {
+		var startTime = new Date().getTime();
+
 		runOnAllServers(function(electrumClient) {
 			return electrumClient.blockchainScripthash_getHistory(addrScripthash);
 
 		}).then(function(results) {
 			debugLog(`getAddressTxids=${utils.ellipsize(JSON.stringify(results), 200)}`);
 
+			logStats("blockchainScripthash_getHistory", new Date().getTime() - startTime, true);
+
 			if (addrScripthash == coinConfig.genesisCoinbaseOutputAddressScripthash) {
 				for (var i = 0; i < results.length; i++) {
 					results[i].result.unshift({tx_hash:coinConfig.genesisCoinbaseTransactionIdsByNetwork[global.activeBlockchain], height:0});
@@ -194,6 +201,8 @@ function getAddressTxids(addrScripthash) {
 				resolve(results[0]);
 			}
 		}).catch(function(err) {
+			logStats("blockchainScripthash_getHistory", new Date().getTime() - startTime, false);
+
 			reject(err);
 		});
 	});
@@ -201,12 +210,16 @@ function getAddressTxids(addrScripthash) {
 
 function getAddressBalance(addrScripthash) {
 	return new Promise(function(resolve, reject) {
+		var startTime = new Date().getTime();
+
 		runOnAllServers(function(electrumClient) {
 			return electrumClient.blockchainScripthash_getBalance(addrScripthash);
 
 		}).then(function(results) {
 			debugLog(`getAddressBalance=${JSON.stringify(results)}`);
 
+			logStats("blockchainScripthash_getBalance", new Date().getTime() - startTime, true);
+
 			if (addrScripthash == coinConfig.genesisCoinbaseOutputAddressScripthash) {
 				for (var i = 0; i < results.length; i++) {
 					var coinbaseBlockReward = coinConfig.blockRewardFunction(0, global.activeBlockchain);
@@ -230,12 +243,31 @@ function getAddressBalance(addrScripthash) {
 				resolve(results[0]);
 			}
 		}).catch(function(err) {
+			logStats("blockchainScripthash_getBalance", new Date().getTime() - startTime, false);
+
 			reject(err);
 		});
 	});
 }
 
+function logStats(cmd, dt, success) {
+	if (!global.electrumStats[cmd]) {
+		global.electrumStats[cmd] = {count:0, time:0, successes:0, failures:0};
+	}
+
+	global.electrumStats[cmd].count++;
+	global.electrumStats[cmd].time += dt;
+
+	if (success) {
+		global.electrumStats[cmd].successes++;
+
+	} else {
+		global.electrumStats[cmd].failures++;
+	}
+}
+
 module.exports = {
 	connectToServers: connectToServers,
 	getAddressDetails: getAddressDetails
-};
+};
+

routes/baseActionsRouter.js

@@ -1498,6 +1498,7 @@ router.get("/admin", function(req, res, next) {
 	res.locals.appStartTime = global.appStartTime;
 	res.locals.memstats = v8.getHeapStatistics();
 	res.locals.rpcStats = global.rpcStats;
+	res.locals.electrumStats = global.electrumStats;
 	res.locals.cacheStats = global.cacheStats;
 	res.locals.errorStats = global.errorStats;
 

views/admin.pug

@@ -130,6 +130,41 @@ block content
 											span #{new Decimal(item.successes).dividedBy(new Decimal(item.successes + item.failures)).times(100).toDP(1)}
 												small  %
 
+			if (electrumStats)
+				div.card.shadow-sm.mb-3
+					div.card-body
+						h3.h6 Electrum Stats
+						hr
+
+						div.table-responsive
+							table.table.table-hover.table-striped
+								thead
+									tr
+										th Method
+										th.text-right Count
+										th.text-right Time
+											small  (s)
+										th.text-right Avg Time
+											small  (ms)
+										th.text-right Successes / Failures
+										th.text-right Success Rate
+
+								tbody
+									each item, itemName in electrumStats
+										tr.text-monospace
+											td #{itemName}
+											td.text-right #{item.count.toLocaleString()}
+											td.text-right #{(item.time / 1000).toLocaleString()}
+											td.text-right #{(item.time / item.count).toLocaleString()}
+											td.text-right
+												span.text-success #{item.successes.toLocaleString()}
+												span.mx-1 /
+												span.text-danger #{item.failures.toLocaleString()}
+
+											td.text-right
+												span #{new Decimal(item.successes).dividedBy(new Decimal(item.successes + item.failures)).times(100).toDP(1)}
+													small  %
+
 			div.card.shadow-sm.mb-3
 				div.card-body
 					h3.h6 Error Stats