Implement error handling for REST API

1 files changed, 44 insertions, 0 deletions

diff --git a/src/org/traccar/api/ResourceErrorHandler.java b/src/org/traccar/api/ResourceErrorHandler.java
new file mode 100644
index 000000000..e2f4dce10
--- /dev/null
+++ b/src/org/traccar/api/ResourceErrorHandler.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com)
+ *
+ * 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.api;
+
+import org.traccar.helper.Log;
+
+import javax.ws.rs.WebApplicationException;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.ext.ExceptionMapper;
+import java.util.HashMap;
+import java.util.Map;
+
+public class ResourceErrorHandler implements ExceptionMapper<WebApplicationException> {
+
+    private static final String KEY_MESSAGE = "message";
+    private static final String KEY_DETAILS = "details";
+
+    @Override
+    public Response toResponse(WebApplicationException e) {
+        Map<String, String> error = new HashMap<>();
+        Throwable cause = e.getCause();
+        if (cause != null) {
+            error.put(KEY_MESSAGE, cause.getMessage());
+            error.put(KEY_DETAILS, Log.exceptionStack(cause));
+            return Response.status(Response.Status.BAD_REQUEST).entity(error).build();
+        } else {
+            return Response.status(e.getResponse().getStatus()).entity(error).build();
+        }
+    }
+
+}