From 03cebd3191a9c27c4b38e585b323d5c8d6868571 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton@traccar.org>
Date: Sat, 29 Apr 2023 13:56:51 -0700
Subject: Add outdated position filter

---
 src/main/java/org/traccar/config/Keys.java           | 8 ++++++++
 src/main/java/org/traccar/handler/FilterHandler.java | 9 +++++++++
 2 files changed, 17 insertions(+)

(limited to 'src')

diff --git a/src/main/java/org/traccar/config/Keys.java b/src/main/java/org/traccar/config/Keys.java
index 8ced32153..c69289403 100644
--- a/src/main/java/org/traccar/config/Keys.java
+++ b/src/main/java/org/traccar/config/Keys.java
@@ -1238,6 +1238,14 @@ public final class Keys {
             "filter.duplicate",
             List.of(KeyType.CONFIG));
 
+    /**
+     * Filter messages that do not have GPS location. If they are not filtered, they will include the last known
+     * location.
+     */
+    public static final ConfigKey<Boolean> FILTER_OUTDATED = new BooleanConfigKey(
+            "filter.outdated",
+            List.of(KeyType.CONFIG));
+
     /**
      * Filter records with fix time in the future. The value is specified in seconds. Records that have fix time more
      * than the specified number of seconds later than current server time would be filtered out.
diff --git a/src/main/java/org/traccar/handler/FilterHandler.java b/src/main/java/org/traccar/handler/FilterHandler.java
index 1d1c27b7a..9ff94deb0 100644
--- a/src/main/java/org/traccar/handler/FilterHandler.java
+++ b/src/main/java/org/traccar/handler/FilterHandler.java
@@ -48,6 +48,7 @@ public class FilterHandler extends ChannelInboundHandlerAdapter {
     private final boolean filterInvalid;
     private final boolean filterZero;
     private final boolean filterDuplicate;
+    private final boolean filterOutdated;
     private final long filterFuture;
     private final long filterPast;
     private final boolean filterApproximate;
@@ -69,6 +70,7 @@ public class FilterHandler extends ChannelInboundHandlerAdapter {
         filterInvalid = config.getBoolean(Keys.FILTER_INVALID);
         filterZero = config.getBoolean(Keys.FILTER_ZERO);
         filterDuplicate = config.getBoolean(Keys.FILTER_DUPLICATE);
+        filterOutdated = config.getBoolean(Keys.FILTER_OUTDATED);
         filterFuture = config.getLong(Keys.FILTER_FUTURE) * 1000;
         filterPast = config.getLong(Keys.FILTER_PAST) * 1000;
         filterAccuracy = config.getInteger(Keys.FILTER_ACCURACY);
@@ -115,6 +117,10 @@ public class FilterHandler extends ChannelInboundHandlerAdapter {
         return false;
     }
 
+    private boolean filterOutdated(Position position) {
+        return filterOutdated && position.getOutdated();
+    }
+
     private boolean filterFuture(Position position) {
         return filterFuture != 0 && position.getFixTime().getTime() > System.currentTimeMillis() + filterFuture;
     }
@@ -189,6 +195,9 @@ public class FilterHandler extends ChannelInboundHandlerAdapter {
         if (filterZero(position)) {
             filterType.append("Zero ");
         }
+        if (filterOutdated(position)) {
+            filterType.append("Outdated ");
+        }
         if (filterFuture(position)) {
             filterType.append("Future ");
         }
-- 
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