Merge pull request #3269 from Abyss777/distance_optimization

Distance calculation optimization

5 files changed, 37 insertions, 91 deletions

diff --git a/src/org/traccar/BasePipelineFactory.java b/src/org/traccar/BasePipelineFactory.java
index 45213c1a1..0997e6f11 100644
--- a/src/org/traccar/BasePipelineFactory.java
+++ b/src/org/traccar/BasePipelineFactory.java
@@ -49,7 +49,6 @@ public abstract class BasePipelineFactory implements ChannelPipelineFactory {
     private int timeout;
 
     private FilterHandler filterHandler;
-    private CoordinatesHandler coordinatesHandler;
     private DistanceHandler distanceHandler;
     private MotionHandler motionHandler;
     private GeocoderHandler geocoderHandler;
@@ -126,14 +125,14 @@ public abstract class BasePipelineFactory implements ChannelPipelineFactory {
             }
         }
 
+        distanceHandler = new DistanceHandler(Context.getConfig().getBoolean("coordinates.filter"),
+                Context.getConfig().getInteger("coordinates.minError"),
+                Context.getConfig().getInteger("coordinates.maxError"));
+
         if (Context.getConfig().getBoolean("filter.enable")) {
             filterHandler = new FilterHandler();
         }
 
-        if (Context.getConfig().getBoolean("coordinates.filter")) {
-            coordinatesHandler = new CoordinatesHandler();
-        }
-
         if (Context.getGeocoder() != null) {
             geocoderHandler = new GeocoderHandler(
                     Context.getGeocoder(),
@@ -146,8 +145,6 @@ public abstract class BasePipelineFactory implements ChannelPipelineFactory {
                     Context.getConfig().getBoolean("geolocation.processInvalidPositions"));
         }
 
-        distanceHandler = new DistanceHandler();
-
         motionHandler = new MotionHandler(Context.getConfig().getDouble("event.motion.speedThreshold", 0.01));
 
         if (Context.getConfig().hasKey("location.latitudeHemisphere")
@@ -196,6 +193,11 @@ public abstract class BasePipelineFactory implements ChannelPipelineFactory {
         if (hemisphereHandler != null) {
             pipeline.addLast("hemisphere", hemisphereHandler);
         }
+
+        if (distanceHandler != null) {
+            pipeline.addLast("distance", distanceHandler);
+        }
+
         if (geocoderHandler != null) {
             pipeline.addLast("geocoder", geocoderHandler);
         }
@@ -207,14 +209,6 @@ public abstract class BasePipelineFactory implements ChannelPipelineFactory {
             pipeline.addLast("filter", filterHandler);
         }
 
-        if (coordinatesHandler != null) {
-            pipeline.addLast("coordinatesHandler", coordinatesHandler);
-        }
-
-        if (distanceHandler != null) {
-            pipeline.addLast("distance", distanceHandler);
-        }
-
         if (motionHandler != null) {
             pipeline.addLast("motion", motionHandler);
         }
diff --git a/src/org/traccar/CoordinatesHandler.java b/src/org/traccar/CoordinatesHandler.java
deleted file mode 100644
index 80a423da1..000000000
--- a/src/org/traccar/CoordinatesHandler.java
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- * Copyright 2016 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;
-
-import org.traccar.helper.DistanceCalculator;
-import org.traccar.model.Position;
-
-public class CoordinatesHandler extends BaseDataHandler {
-
-    private final int coordinatesMinError;
-    private final int coordinatesMaxError;
-
-    public CoordinatesHandler() {
-        Config config = Context.getConfig();
-        coordinatesMinError = config.getInteger("coordinates.minError");
-        coordinatesMaxError = config.getInteger("coordinates.maxError");
-    }
-
-    private Position getLastPosition(long deviceId) {
-        if (Context.getIdentityManager() != null) {
-            return Context.getIdentityManager().getLastPosition(deviceId);
-        }
-        return null;
-    }
-
-    @Override
-    protected Position handlePosition(Position position) {
-        Position last = getLastPosition(position.getDeviceId());
-        if (last != null && last.getValid() && last.getLatitude() != 0 && last.getLongitude() != 0) {
-            double distance = DistanceCalculator.distance(
-                    position.getLatitude(), position.getLongitude(), last.getLatitude(), last.getLongitude());
-            boolean satisfiesMin = coordinatesMinError == 0 || distance > coordinatesMinError;
-            boolean satisfiesMax = coordinatesMaxError == 0 || distance < coordinatesMaxError || position.getValid();
-            if (!satisfiesMin || !satisfiesMax) {
-                position.setLatitude(last.getLatitude());
-                position.setLongitude(last.getLongitude());
-            }
-        }
-        return position;
-    }
-
-}
diff --git a/src/org/traccar/DistanceHandler.java b/src/org/traccar/DistanceHandler.java
index 0ab2d9048..295bc3b29 100644
--- a/src/org/traccar/DistanceHandler.java
+++ b/src/org/traccar/DistanceHandler.java
@@ -1,6 +1,6 @@
 /*
  * Copyright 2015 Amila Silva
- * Copyright 2016 Anton Tananaev (anton@traccar.org)
+ * Copyright 2016 - 2017 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.
@@ -24,6 +24,16 @@ import java.math.RoundingMode;
 
 public class DistanceHandler extends BaseDataHandler {
 
+    private final boolean filter;
+    private final int coordinatesMinError;
+    private final int coordinatesMaxError;
+
+    public DistanceHandler(boolean filter, int coordinatesMinError, int coordinatesMaxError) {
+        this.filter = filter;
+        this.coordinatesMinError = coordinatesMinError;
+        this.coordinatesMaxError = coordinatesMaxError;
+    }
+
     private Position getLastPosition(long deviceId) {
         if (Context.getIdentityManager() != null) {
             return Context.getIdentityManager().getLastPosition(deviceId);
@@ -35,25 +45,32 @@ public class DistanceHandler extends BaseDataHandler {
     protected Position handlePosition(Position position) {
 
         double distance = 0.0;
+        if (position.getAttributes().containsKey(Position.KEY_DISTANCE)) {
+            distance = position.getDouble(Position.KEY_DISTANCE);
+        }
         double totalDistance = 0.0;
 
         Position last = getLastPosition(position.getDeviceId());
         if (last != null) {
             totalDistance = last.getDouble(Position.KEY_TOTAL_DISTANCE);
-
             if (!position.getAttributes().containsKey(Position.KEY_DISTANCE)) {
                 distance = DistanceCalculator.distance(
                         position.getLatitude(), position.getLongitude(),
                         last.getLatitude(), last.getLongitude());
-
                 distance = BigDecimal.valueOf(distance).setScale(2, RoundingMode.HALF_EVEN).doubleValue();
-            } else {
-                distance = position.getDouble(Position.KEY_DISTANCE);
+            }
+            if (filter && last.getValid() && last.getLatitude() != 0 && last.getLongitude() != 0) {
+                boolean satisfiesMin = coordinatesMinError == 0 || distance > coordinatesMinError;
+                boolean satisfiesMax = coordinatesMaxError == 0
+                        || distance < coordinatesMaxError || position.getValid();
+                if (!satisfiesMin || !satisfiesMax) {
+                    position.setLatitude(last.getLatitude());
+                    position.setLongitude(last.getLongitude());
+                    distance = 0;
+                }
             }
         }
-        if (!position.getAttributes().containsKey(Position.KEY_DISTANCE)) {
-            position.set(Position.KEY_DISTANCE, distance);
-        }
+        position.set(Position.KEY_DISTANCE, distance);
         totalDistance = BigDecimal.valueOf(totalDistance + distance).setScale(2, RoundingMode.HALF_EVEN).doubleValue();
         position.set(Position.KEY_TOTAL_DISTANCE, totalDistance);
 
diff --git a/src/org/traccar/FilterHandler.java b/src/org/traccar/FilterHandler.java
index f2a80a98f..973dfc205 100644
--- a/src/org/traccar/FilterHandler.java
+++ b/src/org/traccar/FilterHandler.java
@@ -15,7 +15,6 @@
  */
 package org.traccar;
 
-import org.traccar.helper.DistanceCalculator;
 import org.traccar.helper.Log;
 import org.traccar.helper.UnitsConverter;
 import org.traccar.model.Position;
@@ -111,19 +110,14 @@ public class FilterHandler extends BaseDataHandler {
 
     private boolean filterDistance(Position position, Position last) {
         if (filterDistance != 0 && last != null) {
-            double distance = DistanceCalculator.distance(
-                    position.getLatitude(), position.getLongitude(),
-                    last.getLatitude(), last.getLongitude());
-            return distance < filterDistance;
+            return position.getDouble(Position.KEY_DISTANCE) < filterDistance;
         }
         return false;
     }
 
     private boolean filterMaxSpeed(Position position, Position last) {
         if (filterMaxSpeed != 0 && last != null) {
-            double distance = DistanceCalculator.distance(
-                    position.getLatitude(), position.getLongitude(),
-                    last.getLatitude(), last.getLongitude());
+            double distance = position.getDouble(Position.KEY_DISTANCE);
             long time = position.getFixTime().getTime() - last.getFixTime().getTime();
             return UnitsConverter.knotsFromMps(distance / time) > filterMaxSpeed;
         }
diff --git a/src/org/traccar/GeocoderHandler.java b/src/org/traccar/GeocoderHandler.java
index c5f4d2f9a..2742ff1a7 100644
--- a/src/org/traccar/GeocoderHandler.java
+++ b/src/org/traccar/GeocoderHandler.java
@@ -22,7 +22,6 @@ import org.jboss.netty.channel.Channels;
 import org.jboss.netty.channel.MessageEvent;
 import org.traccar.geocoder.AddressFormat;
 import org.traccar.geocoder.Geocoder;
-import org.traccar.helper.DistanceCalculator;
 import org.traccar.helper.Log;
 import org.traccar.model.Position;
 
@@ -62,10 +61,7 @@ public class GeocoderHandler implements ChannelUpstreamHandler {
                 if (geocoderReuseDistance != 0) {
                     Position lastPosition = Context.getIdentityManager().getLastPosition(position.getDeviceId());
                     if (lastPosition != null && lastPosition.getAddress() != null) {
-                        double distance = DistanceCalculator.distance(
-                                position.getLatitude(), position.getLongitude(),
-                                lastPosition.getLatitude(), lastPosition.getLongitude());
-                        if (distance <= geocoderReuseDistance) {
+                        if (position.getDouble(Position.KEY_DISTANCE) <= geocoderReuseDistance) {
                             position.setAddress(lastPosition.getAddress());
                             Channels.fireMessageReceived(ctx, position, event.getRemoteAddress());
                             return;