minor cleanup

- cleaner startup for influx when configured
- add back exchange-rate logging that was accidentally deleted

app.js

@@ -226,23 +226,25 @@ app.runOnStartup = function() {
 		timeout: 5000
 	});
 
-	coreApi.getNetworkInfo().then(function(getnetworkinfo) {
-		console.log("Connected via RPC to node. Basic info: version=" + getnetworkinfo.version + ", subversion=" + getnetworkinfo.subversion + ", protocolversion=" + getnetworkinfo.protocolversion + ", services=" + getnetworkinfo.localservices);
-
 	if (config.credentials.influxdb.active) {
 		global.influxdb = new Influx.InfluxDB(config.credentials.influxdb);
 
 		console.log(`Connected to InfluxDB: ${config.credentials.influxdb.host}:${config.credentials.influxdb.port}/${config.credentials.influxdb.database}`);
+	}
+
+	coreApi.getNetworkInfo().then(function(getnetworkinfo) {
+		console.log("Connected via RPC to node. Basic info: version=" + getnetworkinfo.version + ", subversion=" + getnetworkinfo.subversion + ", protocolversion=" + getnetworkinfo.protocolversion + ", services=" + getnetworkinfo.localservices);
 
-		logNetworkStats();
-		setInterval(logNetworkStats, 1 * 60000);
+		if (global.influxdb != null) {
+			logNetworkStats();
+			setInterval(logNetworkStats, 1 * 60000);
 
-				logBlockStats();
-				setInterval(logBlockStats, 5 * 60000);
-			}
-		}).catch(function(err) {
-			console.log("Error 923grf20fge: " + err + ", error json: " + JSON.stringify(err));
-		});
+			logBlockStats();
+			setInterval(logBlockStats, 5 * 60000);
+		}
+	}).catch(function(err) {
+		console.log("Error 923grf20fge: " + err + ", error json: " + JSON.stringify(err));
+	});
 
 	if (config.donationAddresses) {
 		var getDonationAddressQrCode = function(coinId) {

app/utils.js

@@ -290,6 +290,22 @@ function refreshExchangeRates() {
 					global.exchangeRates = exchangeRates;
 					global.exchangeRatesUpdateTime = new Date();
 
+					if (global.influxdb) {
+						var points = [];
+						for (var key in exchangeRates) {
+							points.push({
+								measurement: `exchange_rates.${coins[config.coin].ticker.toLowerCase()}_${key.toLowerCase()}`,
+								fields:{value:parseFloat(exchangeRates[key])}
+							});
+						}
+
+						//console.log("pts: " + JSON.stringify(points));
+
+						global.influxdb.writePoints(points).catch(err => {
+							console.error(`Error saving data to InfluxDB: ${err.stack}`)
+						});
+					}
+
 					console.log("Using exchange rates: " + JSON.stringify(global.exchangeRates) + " starting at " + global.exchangeRatesUpdateTime);
 
 				} else {