Merge pull request #253 from isocolsky/paginate_txs

WIP Paginate txs

app/controllers/addresses.js

@@ -94,37 +94,62 @@ exports.multiutxo = function(req, res, next) {
 
 exports.multitxs = function(req, res, next) {
 
-  function processTxs(txs, cb) {
-    txs = _.uniq(_.flatten(txs));
-    var transactions = [];
+  function processTxs(txs, from, to, cb) {
+    txs = _.uniq(_.flatten(txs), 'txid');
+    var nbTxs = txs.length;
+    var paginated = !_.isUndefined(from) || !_.isUndefined(to);
+
+    if (paginated) {
+      txs.sort(function(a, b) {
+        return (b.ts || b.ts) - (a.ts || a.ts);
+      });
+      var start = Math.max(from || 0, 0);
+      var end = Math.min(to || txs.length, txs.length);
+      txs = txs.slice(start, end);
+    }
+
     async.each(txs, function (tx, callback) {
-      tDb.fromIdWithInfo(tx, function(err, tx) {
+      tDb.fromIdWithInfo(tx.txid, function(err, tx) {
         if (err) console.log(err);
         if (tx && tx.info) {
-          transactions.push(tx.info);
+          _.find(txs, { txid: tx.txid }).info = tx.info;
         }
         callback();
       });
     }, function (err) {
       if (err) return cb(err);
+      
+      var transactions = _.pluck(txs, 'info');
+      if (paginated) {
+        transactions = {
+          totalItems: nbTxs,
+          from: +from,
+          to: +to,
+          items: transactions,
+        };
+      }
       return cb(null, transactions);
     });
   };
 
+  var from = req.query.from;
+  var to = req.query.to;
+
   var as = getAddrs(req, res, next);
   if (as) {
     var txs = [];
     async.each(as, function(a, callback) {
       a.update(function(err) {
         if (err) callback(err);
-        txs = txs.concat(a.transactions);
+        txs.push(a.transactions);
         callback();
-      }, {ignoreCache: req.param('noCache')});
+      }, {ignoreCache: req.param('noCache'), includeTxInfo: true});
     }, function(err) { // finished callback
       if (err) return common.handleErrors(err, res);
-      processTxs(txs, function (err, transactions) {
+      processTxs(txs, from, to, function (err, transactions) {
         if (err) return common.handleErrors(err, res);
         res.jsonp(transactions);
+        return next();
       });
     });
   }

app/models/Address.js

@@ -93,25 +93,31 @@ Address.prototype.getObj = function() {
   };
 };
 
-Address.prototype._addTxItem = function(txItem, txList) {
+Address.prototype._addTxItem = function(txItem, txList, includeInfo) {
+  function addTx(data) {
+    if (!txList) return;
+    if (includeInfo) {
+      txList.push(data);
+    } else {
+      txList.push(data.txid);
+    }
+  };
+
   var add=0, addSpend=0;
   var v = txItem.value_sat;
   var seen = this.seen;
 
   // Founding tx
-  if ( !seen[txItem.txid] ) {
-    seen[txItem.txid]=1;
-    add=1;
+  if (!seen[txItem.txid]) {
+    seen[txItem.txid] = 1;
+    add = 1;
 
-    if (txList)
-      txList.push(txItem.txid);
+    addTx({ txid: txItem.txid, ts: txItem.ts });
   }
 
   // Spent tx
   if (txItem.spentTxId && !seen[txItem.spentTxId]  ) {
-    if (txList) {
-      txList.push(txItem.spentTxId);
-    }
+    addTx({ txid: txItem.spentTxId, ts: txItem.spentTs });
     seen[txItem.spentTxId]=1;
     addSpend=1;
   }
@@ -143,6 +149,7 @@ Address.prototype._addTxItem = function(txItem, txList) {
 // opts are
 // .onlyUnspent
 // .txLimit     (=0 -> no txs, => -1 no limit)
+// .includeTxInfo
 // 
 Address.prototype.update = function(next, opts) {
   var self = this;
@@ -188,7 +195,7 @@ Address.prototype.update = function(next, opts) {
         }
         else {
           txOut.forEach(function(txItem){
-            self._addTxItem(txItem, txList);
+            self._addTxItem(txItem, txList, opts.includeTxInfo);
           });
           if (txList) 
             self.transactions = txList;

test/integration/txs.js

@@ -0,0 +1,71 @@
+#!/usr/bin/env node
+
+'use strict';
+
+process.env.NODE_ENV = process.env.NODE_ENV || 'development';
+
+var _ = require('lodash');
+var async = require('async');
+var assert = require('assert');
+var fs = require('fs');
+var Address = require('../../app/models/Address');
+var addresses = require('../../app/controllers/addresses');
+var TransactionDb = require('../../lib/TransactionDb').default();
+var fixture = JSON.parse(fs.readFileSync('test/integration/txs.json'));
+var should = require('chai');
+var sinon = require('sinon');
+
+var txDb;
+describe('Transactions for multiple addresses', function() {
+  this.timeout(5000);
+
+  var req, res;
+  before(function(c) {
+    txDb = TransactionDb;
+
+    var i = 0;
+    _.each(_.flatten(_.pluck(fixture, 'addrs')), function(addr) {
+      TransactionDb.deleteCacheForAddress(addr, function() {
+        if (++i === fixture.length) return c();
+      });
+    });
+  });
+
+  beforeEach(function(c) {
+    req = {};
+    res = {};
+    req.query = {};
+    res.jsonp = sinon.spy();
+    return c();
+  });
+
+  describe('All', function () {
+    _.each(fixture, function (f) {
+      it(f.test, function (done) {
+        req.param = sinon.stub().withArgs('addrs').returns(f.addrs.join(','));
+        var paginated = !_.isUndefined(f.from) || !_.isUndefined(f.to);
+        if (paginated) {
+          req.query = {
+            from: f.from,
+            to: f.to
+          };
+        }
+        addresses.multitxs(req, res, function() {
+          var txs = res.jsonp.getCall(0).args[0];
+          txs.should.exist;
+          if (paginated) {
+            txs.totalItems.should.equal(f.totalTransactions);
+            txs.items.length.should.equal(f.returnedTransactions);
+            if (f.transactions) {
+              JSON.stringify(_.pluck(txs.items, 'txid')).should.equal(JSON.stringify(f.transactions));
+            }
+          } else {
+            txs.should.be.instanceof(Array);
+            txs.length.should.equal(f.returnedTransactions);
+          }
+          done();
+        });
+      });
+    });
+  });
+});

test/integration/txs.json

@@ -0,0 +1,32 @@
+[{
+  "test": "should return non-paginated txs for single address",
+  "addrs": ["mtA6woo1wjCeu1dLkWgpSD3tRnRfrHt3FL"],
+  "totalTransactions": 13,
+  "returnedTransactions": 13
+},{
+  "test": "should return paginated txs for single address",
+  "addrs": ["mtA6woo1wjCeu1dLkWgpSD3tRnRfrHt3FL"],
+  "totalTransactions": 13,
+  "from": 8,
+  "to": 12,
+  "returnedTransactions": 4
+},{
+  "test": "should return non-paginated txs for multiple addresses",
+  "addrs": ["mqtYvjsUg59XpngBAYjFF51Xauc28a6Ckd","myDZmGN9euuRhM1mniSaXhQjNdqFmUzUkj"],
+  "totalTransactions": 4,
+  "returnedTransactions": 4
+},{
+  "test": "should return paginated txs for multiple addresses",
+  "addrs": ["mqtYvjsUg59XpngBAYjFF51Xauc28a6Ckd","myDZmGN9euuRhM1mniSaXhQjNdqFmUzUkj", "n2NbTWCuUyTvpA2YKTpVD4SmCouFLcm8rS"],
+  "totalTransactions": 6,
+  "from": 2,
+  "to": 6,
+  "returnedTransactions": 4,
+  "transactions": [
+    "3e81723d069b12983b2ef694c9782d32fca26cc978de744acbc32c3d3496e915",
+    "b701b0680bc2b6f8b58f13d035a754486ecefd2438e3495cd8f395ab7f5e7ba9",
+    "80fb4fd2a6e5e795a4f30aebeda49424e7ed4d3630b128efb946aa964e0bc9c0",
+    "855e881892d7cd4a8fa81dbd8f6e9d142d02bffc10ffbe5428036ee55c3e3e0f"
+  ]
+}
+]