fix: Report exception if filewatcher fails to start (#17161)

Related to #17159
vaadin · Jul 3, 2023 · cadef8c · cadef8c
1 parent 8c12e1d
commit cadef8c
Showing 1 changed file with 10 additions and 2 deletions.
diff --git a/vaadin-dev-server/src/main/java/com/vaadin/base/devserver/FileWatcher.java b/vaadin-dev-server/src/main/java/com/vaadin/base/devserver/FileWatcher.java
@@ -17,10 +17,11 @@
 
 import java.io.File;
 import java.io.IOException;
-import java.io.Serializable;
 import java.util.Objects;
 
 import io.methvin.watcher.DirectoryWatcher;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.vaadin.flow.function.SerializableConsumer;
 
@@ -61,7 +62,10 @@ public FileWatcher(SerializableConsumer<File> onChangeConsumer,
      * Starts the file watching.
      */
     public void start() {
-        watcher.watchAsync();
+        watcher.watchAsync().exceptionally((e) -> {
+            getLogger().error("Error starting file watcher", e);
+            return null;
+        });
     }
 
     /**
@@ -74,4 +78,8 @@ public void stop() throws IOException {
         watcher.close();
     }
 
+    private static Logger getLogger() {
+        return LoggerFactory.getLogger(FileWatcher.class);
+    }
+
 }