From fc3a24148526b3d41ba40ed1f55cf40b54c6a255 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton@traccar.org>
Date: Wed, 3 Apr 2024 21:17:52 -0700
Subject: Handle outdated positions in buffer

---
 .../java/org/traccar/handler/OutdatedHandler.java  | 56 ++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 src/main/java/org/traccar/handler/OutdatedHandler.java

(limited to 'src/main/java/org/traccar/handler')

diff --git a/src/main/java/org/traccar/handler/OutdatedHandler.java b/src/main/java/org/traccar/handler/OutdatedHandler.java
new file mode 100644
index 000000000..88f1c4a0c
--- /dev/null
+++ b/src/main/java/org/traccar/handler/OutdatedHandler.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2024 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.handler;
+
+import jakarta.inject.Inject;
+import org.traccar.model.Position;
+import org.traccar.session.cache.CacheManager;
+
+import java.util.Date;
+
+public class OutdatedHandler extends BasePositionHandler {
+
+    private final CacheManager cacheManager;
+
+    @Inject
+    public OutdatedHandler(CacheManager cacheManager) {
+        this.cacheManager = cacheManager;
+    }
+
+    @Override
+    public void handlePosition(Position position, Callback callback) {
+        if (position.getOutdated()) {
+            Position last = cacheManager.getPosition(position.getDeviceId());
+            if (last != null) {
+                position.setFixTime(last.getFixTime());
+                position.setValid(last.getValid());
+                position.setLatitude(last.getLatitude());
+                position.setLongitude(last.getLongitude());
+                position.setAltitude(last.getAltitude());
+                position.setSpeed(last.getSpeed());
+                position.setCourse(last.getCourse());
+                position.setAccuracy(last.getAccuracy());
+            } else {
+                position.setFixTime(new Date(315964819000L)); // gps epoch 1980-01-06
+            }
+            if (position.getDeviceTime() == null) {
+                position.setDeviceTime(position.getServerTime());
+            }
+        }
+        callback.processed(position);
+    }
+
+}
-- 
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