From b6746f043a17373ac2061ecabd714663dcee545e Mon Sep 17 00:00:00 2001
From: Jonathan Rainville <rainville.jonathan@gmail.com>
Date: Fri, 31 Aug 2018 15:12:27 -0400
Subject: [PATCH] remove old transactions to lighten the memory

---
 lib/modules/transactionTracker/index.js | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/lib/modules/transactionTracker/index.js b/lib/modules/transactionTracker/index.js
index 6bff5294..2fc3f41a 100644
--- a/lib/modules/transactionTracker/index.js
+++ b/lib/modules/transactionTracker/index.js
@@ -4,6 +4,7 @@ class TransactionTracker {
     this.events = embark.events;
     this.transactions = {};
     this.embark = embark;
+    this.startTimestamp = Date.now() / 1000;
 
     embark.events.on("block:pending:transaction", this.onPendingTransaction.bind(this));
     embark.events.on("block:header", this.onBlockHeader.bind(this));
@@ -31,6 +32,19 @@ class TransactionTracker {
         }
       });
       this.events.emit('blockchain:gas:oracle:new');
+      this.cullOldTransactions();
+    });
+  }
+
+  cullOldTransactions() {
+    const timeLimit = (Date.now() / 1000) - 600; // Transactions old of 10 minutes are not to be counted anymore
+    if (this.startTimestamp > timeLimit) {
+      return;
+    }
+    Object.keys(this.transactions).forEach(transactionHash => {
+      if (this.transactions[transactionHash].startTimestamp < timeLimit) {
+        delete this.transactions[transactionHash];
+      }
     });
   }