Exception mapper that converts exceptions into appropriate REST responses.

1 files changed, 54 insertions, 0 deletions

diff --git a/src/com.gluster.storage.management.server/src/com/gluster/storage/management/server/resources/v1_0/GenericExceptionMapper.java b/src/com.gluster.storage.management.server/src/com/gluster/storage/management/server/resources/v1_0/GenericExceptionMapper.java
new file mode 100644
index 00000000..f9650902
--- /dev/null
+++ b/src/com.gluster.storage.management.server/src/com/gluster/storage/management/server/resources/v1_0/GenericExceptionMapper.java
@@ -0,0 +1,54 @@
+/*******************************************************************************
+ * Copyright (c) 2011 Gluster, Inc. <http://www.gluster.com>
+ * This file is part of Gluster Management Console.
+ *
+ * Gluster Management Console is free software; you can redistribute it and/or 
+ * modify it under the terms of the GNU Affero General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *  
+ * Gluster Management Console is distributed in the hope that it will be useful, 
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License
+ * for more details.
+ *  
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see
+ * <http://www.gnu.org/licenses/>.
+ *******************************************************************************/
+package com.gluster.storage.management.server.resources.v1_0;
+
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.Response.ResponseBuilder;
+import javax.ws.rs.ext.ExceptionMapper;
+import javax.ws.rs.ext.Provider;
+
+import com.gluster.storage.management.core.exceptions.GlusterValidationException;
+
+@Provider
+public class GenericExceptionMapper implements ExceptionMapper<Exception> {
+
+	/* (non-Javadoc)
+	 * @see javax.ws.rs.ext.ExceptionMapper#toResponse(java.lang.Throwable)
+	 */
+	@Override
+	public Response toResponse(Exception exception) {
+		ResponseBuilder builder;
+		if (exception instanceof GlusterValidationException) {
+			builder = Response.status(Response.Status.BAD_REQUEST);
+		} else {
+			builder = Response.status(Response.Status.INTERNAL_SERVER_ERROR);
+		}
+		
+		String errMsg = exception.getMessage();
+		if(errMsg == null) {
+			errMsg = "Following exception occurred : " + exception.getClass().getName();
+			StackTraceElement[] stackTrace = exception.getStackTrace();
+			if(stackTrace.length > 0) {
+				errMsg += " at [" + stackTrace[0].getClassName() + "][" + stackTrace[0].getLineNumber() + "]";
+			}
+		}
+		return builder.entity(errMsg).type(MediaType.TEXT_PLAIN).build();
+	}
+}