Deliver error to client if no importer succeeded to process the file

java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/adminconsole/resulthandling/SensorDataImportResultsDialog.java

@@ -16,7 +16,6 @@ public class SensorDataImportResultsDialog {
         List<ErrorMessage> errorMessages = response.getErrors();
         SafeHtmlBuilder shb = new SafeHtmlBuilder();
         shb.appendHtmlConstant("<div style='margin:40px;'>");
-
         if (response.didSucceedImportingAnyFile()) {
             shb.appendHtmlConstant("<p>Succesful uploads</p>");
             shb.appendHtmlConstant("<ul>");
@@ -27,17 +26,20 @@ public class SensorDataImportResultsDialog {
         } else {
             shb.appendHtmlConstant("<p>No succesful upload</p>");
         }
-
         if (response.hasErrors()) {
             shb.appendHtmlConstant("<p>Error messages</p>");
             for (ErrorMessage errorMsg : errorMessages) {
                 shb.appendHtmlConstant("<div style='font-weight:bold;'>").appendEscaped(errorMsg.getMessage())
                         .appendHtmlConstant("</div>");
                 shb.appendHtmlConstant("<ul>");
-                shb.appendHtmlConstant(" <li>ServerLog UUID: ").appendEscaped(errorMsg.getExUUID())
-                        .appendHtmlConstant("</li>");
-                shb.appendHtmlConstant(" <li>Exception Classname: ").appendEscaped(errorMsg.getClassName())
-                        .appendHtmlConstant("</li>");
+                if (!isNullOrEmpty(errorMsg.getExUUID())) {
+                    shb.appendHtmlConstant(" <li>ServerLog UUID: ").appendEscaped(errorMsg.getExUUID())
+                            .appendHtmlConstant("</li>");
+                }
+                if (!isNullOrEmpty(errorMsg.getClassName())) {
+                    shb.appendHtmlConstant(" <li>Exception Classname: ").appendEscaped(errorMsg.getClassName())
+                            .appendHtmlConstant("</li>");
+                }
                 if (!isNullOrEmpty(errorMsg.getFilename())) {
                     shb.appendHtmlConstant(" <li>Filename: ").appendEscaped(errorMsg.getFilename())
                             .appendHtmlConstant("</li>");

java/com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/trackfiles/impl/JsonHolder.java

@@ -69,4 +69,11 @@ public class JsonHolder {
         resp.setContentType("text/html");
         jsonResponseObj.writeJSONString(resp.getWriter());
     }
+
+    public void noImporterSucceeded(String filename) {
+        JSONObject jsonExceptionObj = new JSONObject();
+        jsonErrorObj.add(jsonExceptionObj);
+        jsonExceptionObj.put("filename", filename);
+        jsonExceptionObj.put("message", "No importer succeeded to process file");
+    }
 }

java/com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/trackfiles/impl/TrackFilesImportServlet.java

@@ -7,6 +7,7 @@ import java.util.Collection;
 import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Set;
+import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 import java.util.stream.Collectors;
@@ -96,20 +97,25 @@ public class TrackFilesImportServlet extends AbstractFileUploadServlet {
             importersToTry.addAll(getGPSFixImporters(null));
             logger.log(Level.INFO, "System knows " + importersToTry.size() + " importers: "
                     + importersToTry.stream().map(i -> i.getType()).collect(Collectors.joining(", ")));
-
+            AtomicBoolean succeeded = new AtomicBoolean(false);
             parsersLoop: for (GPSFixImporter importer : importersToTry) {
-                boolean succeeded = false;
+
                 logger.log(Level.INFO, "Trying to import file " + fileName + " with importer " + importer.getType());
                 try (BufferedInputStream in = new BufferedInputStream(fileItem.getInputStream())) {
                     try {
-                        succeeded = importer.importFixes(in, new Callback() {
+                        boolean ok = importer.importFixes(in, new Callback() {
                             @Override
                             public void addFix(GPSFix fix, TrackFileImportDeviceIdentifier device) {
                                 storeFix(fix, device);
                                 jsonResult.addDeviceIndentifier(device);
                             }
                         }, true, fileName);
-
+                        if (ok) {
+                            succeeded.set(ok);
+                        } else {
+                            logger.log(Level.FINE,
+                                    "Importer " + importer.getType() + " did not succesfully import fixes");
+                        }
                     } catch (Exception e) {
                         logger.log(Level.INFO, "Failed with " + e.getClass().getSimpleName()
                                 + " while importing file using " + importer.getType());
@@ -118,11 +124,14 @@ public class TrackFilesImportServlet extends AbstractFileUploadServlet {
                         }
                     }
                 }
-                if (succeeded) {
+                if (succeeded.get()) {
                     logger.log(Level.INFO, "Successfully imported file " + fileName + " using " + importer.getType());
                     break parsersLoop;
                 }
             }
+            if (!succeeded.get()) {
+                jsonResult.noImporterSucceeded(fileName);
+            }
         }
     }