new tool for browsing unconfirmed tx

app/api/coreApi.js

@@ -158,6 +158,61 @@ function getPeerSummary() {
 	});
 }
 
+function getMempoolDetails(start, count) {
+	return new Promise(function(resolve, reject) {
+		tryCacheThenRpcApi(miscCache, "getRawMempool", 1000, rpcApi.getRawMempool).then(function(result) {
+			var txids = [];
+			var txidIndex = 0;
+			for (var txid in result) {
+				if (txidIndex >= start && (txidIndex < (start + count)))  {
+					txids.push(txid);
+				}
+
+				txidIndex++;
+			}
+
+			getRawTransactions(txids).then(function(transactions) {
+				var maxInputsTracked = 10;
+				var vinTxids = [];
+				for (var i = 0; i < transactions.length; i++) {
+					var transaction = transactions[i];
+
+					if (transaction && transaction.vin) {
+						for (var j = 0; j < Math.min(maxInputsTracked, transaction.vin.length); j++) {
+							if (transaction.vin[j].txid) {
+								vinTxids.push(transaction.vin[j].txid);
+							}
+						}
+					}
+				}
+
+				var txInputsByTransaction = {};
+				getRawTransactions(vinTxids).then(function(vinTransactions) {
+					var vinTxById = {};
+
+					vinTransactions.forEach(function(tx) {
+						vinTxById[tx.txid] = tx;
+					});
+
+					transactions.forEach(function(tx) {
+						txInputsByTransaction[tx.txid] = [];
+
+						if (tx && tx.vin) {
+							for (var i = 0; i < Math.min(maxInputsTracked, tx.vin.length); i++) {
+								if (vinTxById[tx.vin[i].txid]) {
+									txInputsByTransaction[tx.txid].push(vinTxById[tx.vin[i].txid]);
+								}
+							}
+						}
+					});
+
+					resolve({ txCount:txidIndex, transactions:transactions, txInputsByTransaction:txInputsByTransaction });
+				});
+			});
+		});
+	});
+}
+
 function getMempoolStats() {
 	return new Promise(function(resolve, reject) {
 		tryCacheThenRpcApi(miscCache, "getRawMempool", 5000, rpcApi.getRawMempool).then(function(result) {
@@ -600,5 +655,6 @@ module.exports = {
 	getAddress: getAddress,
 	logCacheSizes: logCacheSizes,
 	getPeerSummary: getPeerSummary,
-	getChainTxStats: getChainTxStats
+	getChainTxStats: getChainTxStats,
+	getMempoolDetails: getMempoolDetails
 };

app/config.js

@@ -49,10 +49,12 @@ module.exports = {
 		{name:"Browse Blocks", url:"/blocks", desc:"Browse all blocks in the blockchain.", fontawesome:"fas fa-cubes"},
 		{name:"Transaction Stats", url:"/tx-stats", desc:"See graphs of total transaction volume and transaction rates.", fontawesome:"fas fa-chart-bar"},
 
+		{name:"Mempool Summary", url:"/mempool-summary", desc:"Detailed summary of the current mempool for this node.", fontawesome:"fas fa-clipboard-list"},
+		{name:"Unconfirmed Transactions", url:"/unconfirmed-tx", desc:"Browse unconfirmed/pending transactions.", fontawesome:"fas fa-unlock-alt"},
+
 		{name:"RPC Browser", url:"/rpc-browser", desc:"Browse the RPC functionality of this node. See docs and execute commands.", fontawesome:"fas fa-book"},
 		{name:"RPC Terminal", url:"/rpc-terminal", desc:"Directly execute RPCs against this node.", fontawesome:"fas fa-terminal"},
-
-		{name:"Mempool Summary", url:"/mempool-summary", desc:"Detailed summary of the current mempool for this node.", fontawesome:"fas fa-clipboard-list"},
+		
 		{name:(coins[currentCoin].name + " Fun"), url:"/fun", desc:"See fun/interesting historical blockchain data.", fontawesome:"fas fa-certificate"}
 	],
 

routes/baseActionsRouter.js

@@ -707,6 +707,40 @@ router.get("/rpc-browser", function(req, res) {
 	});
 });
 
+router.get("/unconfirmed-tx", function(req, res) {
+	var limit = config.site.browseBlocksPageSize;
+	var offset = 0;
+	var sort = "desc";
+
+	if (req.query.limit) {
+		limit = parseInt(req.query.limit);
+	}
+
+	if (req.query.offset) {
+		offset = parseInt(req.query.offset);
+	}
+
+	if (req.query.sort) {
+		sort = req.query.sort;
+	}
+
+	res.locals.limit = limit;
+	res.locals.offset = offset;
+	res.locals.sort = sort;
+	res.locals.paginationBaseUrl = "/unconfirmed-tx";
+
+	coreApi.getMempoolDetails(offset, limit).then(function(mempoolDetails) {
+		res.locals.mempoolDetails = mempoolDetails;
+
+		res.render("unconfirmed-transactions");
+
+	}).catch(function(err) {
+		res.locals.userMessage = "Error: " + err;
+
+		res.render("unconfirmed-transactions");
+	});
+});
+
 router.get("/tx-stats", function(req, res) {
 	var dataPoints = 150;
 

views/includes/tools-card.pug

@@ -3,7 +3,7 @@ div(class="card mb-3")
 		h2(class="h6 mb-0") Tools
 	div(class="card-body")
 		div(class="row")
-			each item, index in [[0, 1, 6], [2, 3, 7], [4, 5]]
+			each item, index in [[0, 1, 2], [4, 3, 5], [6, 7, 8]]
 				div(class="col-md-4")
 					ul(style="list-style-type: none;", class="pl-0")
 						each toolIndex, toolIndexIndex in item

views/unconfirmed-transactions.pug

@@ -0,0 +1,54 @@
+extends layout
+
+block headContent
+	title Unconfirmed Transactions
+
+block content
+	h1(class="h2") Unconfirmed Transactions
+	hr
+
+	if (false)
+		pre
+			code #{JSON.stringify(mempoolDetails.txCount, null, 4)}
+
+	if (mempoolDetails)
+		- var txCount = mempoolDetails.txCount;
+
+		div(class="card")
+			div(class="card-header")
+				span(class="h6")
+					if (txCount == 1)
+						span 1 Transaction
+					else
+						span #{txCount.toLocaleString()} Transactions
+
+			div(class="card-body")
+				each tx, txIndex in mempoolDetails.transactions
+					div(class="xcard mb-3")
+						div(class="card-header")
+							if (tx && tx.txid)
+								strong ##{(txIndex + offset).toLocaleString()}
+								span  – 
+								a(href=("/tx/" + tx.txid), class="monospace") #{tx.txid}
+									
+						div(class="card-body")
+							- var txInputs = mempoolDetails.txInputsByTransaction[tx.txid];
+							- var blockHeight = -1;
+
+							include includes/transaction-io-details.pug
+
+				if (txCount > limit)
+					- var pageNumber = offset / limit + 1;
+					- var pageCount = Math.floor(txCount / limit);
+					- if (pageCount * limit < txCount) {
+						- pageCount++;
+					- }
+					- var paginationUrlFunction = function(x) {
+						- return paginationBaseUrl + "?limit=" + limit + "&offset=" + ((x - 1) * limit + "&sort=" + sort);
+					- }
+					
+					hr
+
+					include includes/pagination.pug
+	else
+		p No unconfirmed transactions found