From 53093e35cea4c5736a33fb63e1e3f7607196873b Mon Sep 17 00:00:00 2001
From: Laurens Rietveld <laurens.rietveld@gmail.com>
Date: Sat, 5 Oct 2013 20:49:51 +0200
Subject: [PATCH] #172 log client exceptions to server

---
 .../yasgui/client/ViewElements.java           | 16 +++++++++++++
 .../yasgui/client/services/YasguiService.java |  1 +
 .../yasgui/server/YasguiServiceImpl.java      | 23 ++++++++++++++++++-
 3 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/src/main/java/com/data2semantics/yasgui/client/ViewElements.java b/src/main/java/com/data2semantics/yasgui/client/ViewElements.java
index c2df0f6d..b249c941 100644
--- a/src/main/java/com/data2semantics/yasgui/client/ViewElements.java
+++ b/src/main/java/com/data2semantics/yasgui/client/ViewElements.java
@@ -43,12 +43,14 @@
 import com.data2semantics.yasgui.client.tab.optionbar.LinkCreator;
 import com.data2semantics.yasgui.client.tab.optionbar.endpoints.EndpointInput;
 import com.data2semantics.yasgui.shared.exceptions.ElementIdException;
+import com.data2semantics.yasgui.shared.exceptions.FetchException;
 import com.google.gwt.dom.client.Style.Cursor;
 import com.google.gwt.dom.client.Style.Position;
 import com.google.gwt.dom.client.Style.Unit;
 import com.google.gwt.event.logical.shared.ResizeEvent;
 import com.google.gwt.event.logical.shared.ResizeHandler;
 import com.google.gwt.http.client.URL;
+import com.google.gwt.user.client.rpc.AsyncCallback;
 import com.smartgwt.client.types.Alignment;
 import com.smartgwt.client.types.Overflow;
 import com.smartgwt.client.types.VerticalAlignment;
@@ -283,6 +285,20 @@ public void onError(Throwable e) {
 		} else {
 			errorMsg = e.getMessage();
 		}
+		if (view.getConnHelper().isOnline()) {
+			//Log exception to server
+			new GwtCallbackWrapper<Void>(view) {
+				public void onCall(AsyncCallback<Void> callback) {
+					view.getRemoteService().logException(new FetchException("blaat"), callback);
+				}
+	
+				protected void onFailure(Throwable throwable) {
+				}
+	
+				protected void onSuccess(Void prefixes) {
+				}
+			}.call();
+		}
 		
 		onError(errorMsg);
 	}
diff --git a/src/main/java/com/data2semantics/yasgui/client/services/YasguiService.java b/src/main/java/com/data2semantics/yasgui/client/services/YasguiService.java
index 9937ecd9..adc090b3 100644
--- a/src/main/java/com/data2semantics/yasgui/client/services/YasguiService.java
+++ b/src/main/java/com/data2semantics/yasgui/client/services/YasguiService.java
@@ -45,4 +45,5 @@ public interface YasguiService extends RemoteService {
 	void deleteBookmarks(int[] bookmarkIds) throws IllegalArgumentException, FetchException;
 	Bookmark[] getBookmarks() throws IllegalArgumentException, FetchException;
 	boolean isOnline() throws IllegalArgumentException;
+	void logException(Throwable e);
 }
diff --git a/src/main/java/com/data2semantics/yasgui/server/YasguiServiceImpl.java b/src/main/java/com/data2semantics/yasgui/server/YasguiServiceImpl.java
index 4fa3db7a..487346fc 100644
--- a/src/main/java/com/data2semantics/yasgui/server/YasguiServiceImpl.java
+++ b/src/main/java/com/data2semantics/yasgui/server/YasguiServiceImpl.java
@@ -31,6 +31,8 @@
 import java.io.IOException;
 import java.sql.SQLException;
 import java.text.ParseException;
+import java.util.logging.FileHandler;
+import java.util.logging.Handler;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -59,8 +61,11 @@
  */
 @SuppressWarnings("serial")
 public class YasguiServiceImpl extends RemoteServiceServlet implements YasguiService {
+	
 	public static String CACHE_DIR = "/cache";
-	private final static Logger LOGGER = Logger.getLogger(YasguiServiceImpl.class.getName());
+	private static Logger LOGGER = Logger.getLogger(YasguiServiceImpl.class.getName());
+	
+	
 
 	public String fetchPrefixes(boolean forceUpdate) throws IllegalArgumentException, FetchException {
 		String prefixes = "";
@@ -244,4 +249,20 @@ public String fetchProperties(String endpoint, boolean forceUpdate) throws Illeg
 	public boolean isOnline() throws IllegalArgumentException {
 		return true;
 	}
+
+	@Override
+	public void logException(Throwable t) {
+		if (System.getProperty("catalina.base") != null) {
+			try {
+				Handler handler = new FileHandler(System.getProperty("catalina.base") + "/logs/yasgui.err");
+				LOGGER.addHandler(handler);
+				LOGGER.log(Level.SEVERE, t.getMessage(), t);
+				handler.close();
+			} catch (Exception e) {
+				e.printStackTrace();
+			}
+		} else {
+			LOGGER.log(Level.SEVERE, t.getMessage(), t);
+		}
+	}
 }