From 5490a0351abc9d6e741baf129300beb2d50051fd Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Wed, 22 Oct 2014 10:09:32 +1300
Subject: Put back cache timeout (fix #933)

---
 src/org/traccar/database/DataManager.java | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

(limited to 'src/org/traccar/database')

diff --git a/src/org/traccar/database/DataManager.java b/src/org/traccar/database/DataManager.java
index bb44c6389..fc83e53a3 100644
--- a/src/org/traccar/database/DataManager.java
+++ b/src/org/traccar/database/DataManager.java
@@ -40,6 +40,14 @@ public class DataManager {
     public DataManager(Properties properties) throws Exception {
         if (properties != null) {
             initDatabase(properties);
+            
+            // Refresh delay
+            String refreshDelay = properties.getProperty("database.refreshDelay");
+            if (refreshDelay != null) {
+                devicesRefreshDelay = Long.valueOf(refreshDelay) * 1000;
+            } else {
+                devicesRefreshDelay = DEFAULT_REFRESH_DELAY * 1000;
+            }
         }
     }
     
@@ -127,14 +135,19 @@ public class DataManager {
      * Devices cache
      */
     private Map<String, Device> devices;
+    private Calendar devicesLastUpdate;
+    private long devicesRefreshDelay;
+    private static final long DEFAULT_REFRESH_DELAY = 300;
 
     public Device getDeviceByImei(String imei) throws SQLException {
 
-        if (devices == null || !devices.containsKey(imei)) {
+        if (devices == null || !devices.containsKey(imei) ||
+                (Calendar.getInstance().getTimeInMillis() - devicesLastUpdate.getTimeInMillis() > devicesRefreshDelay)) {
             devices = new HashMap<String, Device>();
             for (Device device : getDevices()) {
                 devices.put(device.getImei(), device);
             }
+            devicesLastUpdate = Calendar.getInstance();
         }
 
         return devices.get(imei);
-- 
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