From d13f618ee3b8463d063b7f67e039299560245597 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Sat, 31 Dec 2016 11:17:50 +1300
Subject: Implement geocoding error handling

---
 src/org/traccar/ReverseGeocoderHandler.java      | 19 +++++++++++++------
 src/org/traccar/geocode/JsonReverseGeocoder.java |  8 ++++----
 src/org/traccar/geocode/ReverseGeocoder.java     |  4 +++-
 3 files changed, 20 insertions(+), 11 deletions(-)

(limited to 'src/org/traccar')

diff --git a/src/org/traccar/ReverseGeocoderHandler.java b/src/org/traccar/ReverseGeocoderHandler.java
index 88875fb3a..7304234cc 100644
--- a/src/org/traccar/ReverseGeocoderHandler.java
+++ b/src/org/traccar/ReverseGeocoderHandler.java
@@ -22,6 +22,7 @@ import org.jboss.netty.channel.Channels;
 import org.jboss.netty.channel.MessageEvent;
 import org.traccar.geocode.AddressFormat;
 import org.traccar.geocode.ReverseGeocoder;
+import org.traccar.helper.Log;
 import org.traccar.model.Position;
 
 public class ReverseGeocoderHandler implements ChannelUpstreamHandler {
@@ -49,24 +50,30 @@ public class ReverseGeocoderHandler implements ChannelUpstreamHandler {
             return;
         }
 
-        final MessageEvent e = (MessageEvent) evt;
-        Object message = e.getMessage();
+        final MessageEvent event = (MessageEvent) evt;
+        Object message = event.getMessage();
         if (message instanceof Position) {
             final Position position = (Position) message;
             if (processInvalidPositions || position.getValid()) {
                 geocoder.getAddress(addressFormat, position.getLatitude(), position.getLongitude(),
                         new ReverseGeocoder.ReverseGeocoderCallback() {
                     @Override
-                    public void onResult(String address) {
+                    public void onSuccess(String address) {
                         position.setAddress(address);
-                        Channels.fireMessageReceived(ctx, position, e.getRemoteAddress());
+                        Channels.fireMessageReceived(ctx, position, event.getRemoteAddress());
+                    }
+
+                    @Override
+                    public void onFailure(Throwable e) {
+                        Log.warning("Geocoding failed", e);
+                        Channels.fireMessageReceived(ctx, position, event.getRemoteAddress());
                     }
                 });
             } else {
-                Channels.fireMessageReceived(ctx, position, e.getRemoteAddress());
+                Channels.fireMessageReceived(ctx, position, event.getRemoteAddress());
             }
         } else {
-            Channels.fireMessageReceived(ctx, message, e.getRemoteAddress());
+            Channels.fireMessageReceived(ctx, message, event.getRemoteAddress());
         }
     }
 
diff --git a/src/org/traccar/geocode/JsonReverseGeocoder.java b/src/org/traccar/geocode/JsonReverseGeocoder.java
index c107d24e8..d3661b53c 100644
--- a/src/org/traccar/geocode/JsonReverseGeocoder.java
+++ b/src/org/traccar/geocode/JsonReverseGeocoder.java
@@ -53,7 +53,7 @@ public abstract class JsonReverseGeocoder implements ReverseGeocoder {
         if (cache != null) {
             String cachedAddress = cache.get(new AbstractMap.SimpleImmutableEntry<>(latitude, longitude));
             if (cachedAddress != null) {
-                callback.onResult(cachedAddress);
+                callback.onSuccess(cachedAddress);
                 return;
             }
         }
@@ -69,9 +69,9 @@ public abstract class JsonReverseGeocoder implements ReverseGeocoder {
                         if (cache != null) {
                             cache.put(new AbstractMap.SimpleImmutableEntry<>(latitude, longitude), formattedAddress);
                         }
-                        callback.onResult(formattedAddress);
+                        callback.onSuccess(formattedAddress);
                     } else {
-                        callback.onResult(null);
+                        callback.onFailure(new IllegalArgumentException("Empty address"));
                     }
                 }
                 return null;
@@ -79,7 +79,7 @@ public abstract class JsonReverseGeocoder implements ReverseGeocoder {
 
             @Override
             public void onThrowable(Throwable t) {
-                callback.onResult(null);
+                callback.onFailure(t);
             }
         });
     }
diff --git a/src/org/traccar/geocode/ReverseGeocoder.java b/src/org/traccar/geocode/ReverseGeocoder.java
index e2641fa37..b67ac50bb 100644
--- a/src/org/traccar/geocode/ReverseGeocoder.java
+++ b/src/org/traccar/geocode/ReverseGeocoder.java
@@ -19,7 +19,9 @@ public interface ReverseGeocoder {
 
     interface ReverseGeocoderCallback {
 
-        void onResult(String address);
+        void onSuccess(String address);
+
+        void onFailure(Throwable e);
 
     }
 
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