Add generic exception mapper for REST API

Author: ahornace

src/org/opensolaris/opengrok/web/constraints/PositiveDuration.java renamed to src/org/opensolaris/opengrok/web/api/constraints/PositiveDuration.java

@@ -20,7 +20,7 @@
 /*
  * Copyright (c) 2018 Oracle and/or its affiliates. All rights reserved.
  */
-package org.opensolaris.opengrok.web.constraints;
+package org.opensolaris.opengrok.web.api.constraints;
 
 import javax.validation.Constraint;
 import javax.validation.Payload;

src/org/opensolaris/opengrok/web/constraints/PositiveDurationValidator.java renamed to src/org/opensolaris/opengrok/web/api/constraints/PositiveDurationValidator.java

@@ -20,7 +20,7 @@
 /*
  * Copyright (c) 2018 Oracle and/or its affiliates. All rights reserved.
  */
-package org.opensolaris.opengrok.web.constraints;
+package org.opensolaris.opengrok.web.api.constraints;
 
 import javax.validation.ConstraintValidator;
 import javax.validation.ConstraintValidatorContext;

src/org/opensolaris/opengrok/web/api/error/GenericExceptionMapper.java

@@ -0,0 +1,41 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * See LICENSE.txt included in this distribution for the specific
+ * language governing permissions and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at LICENSE.txt.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright (c) 2018 Oracle and/or its affiliates. All rights reserved.
+ */
+package org.opensolaris.opengrok.web.api.error;
+
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.ext.ExceptionMapper;
+import javax.ws.rs.ext.Provider;
+
+@Provider
+public class GenericExceptionMapper implements ExceptionMapper<Exception> {
+
+    @Override
+    public Response toResponse(final Exception e) {
+        return Response.status(Response.Status.INTERNAL_SERVER_ERROR)
+                .entity(e.getMessage())
+                .type(MediaType.TEXT_PLAIN)
+                .build();
+    }
+
+}

src/org/opensolaris/opengrok/web/constraints/ValidationExceptionMapper.java renamed to src/org/opensolaris/opengrok/web/api/error/ValidationExceptionMapper.java

@@ -20,7 +20,7 @@
 /*
  * Copyright (c) 2018 Oracle and/or its affiliates. All rights reserved.
  */
-package org.opensolaris.opengrok.web.constraints;
+package org.opensolaris.opengrok.web.api.error;
 
 import javax.validation.ValidationException;
 import javax.ws.rs.core.MediaType;

src/org/opensolaris/opengrok/web/api/v1/RestApp.java

@@ -32,7 +32,8 @@ public class RestApp extends ResourceConfig {
     public static final String API_PATH = "/api/v1";
 
     public RestApp() {
-        packages("org.opensolaris.opengrok.web.api.v1.controller", "org.opensolaris.opengrok.web.api.v1.filter");
+        packages("org.opensolaris.opengrok.web.api.constraints", "org.opensolaris.opengrok.web.api.error");
+        packages(true, "org.opensolaris.opengrok.web.api.v1");
     }
 
 }

src/org/opensolaris/opengrok/web/messages/Message.java

@@ -32,7 +32,7 @@
 import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 import org.hibernate.validator.constraints.NotBlank;
 import org.hibernate.validator.constraints.NotEmpty;
-import org.opensolaris.opengrok.web.constraints.PositiveDuration;
+import org.opensolaris.opengrok.web.api.constraints.PositiveDuration;
 
 import java.io.IOException;
 import java.time.Duration;

test/org/opensolaris/opengrok/web/constraint/PositiveDurationValidatorTest.java renamed to test/org/opensolaris/opengrok/web/api/constraint/PositiveDurationValidatorTest.java

@@ -20,10 +20,10 @@
 /*
  * Copyright (c) 2018 Oracle and/or its affiliates. All rights reserved.
  */
-package org.opensolaris.opengrok.web.constraint;
+package org.opensolaris.opengrok.web.api.constraint;
 
 import org.junit.Test;
-import org.opensolaris.opengrok.web.constraints.PositiveDurationValidator;
+import org.opensolaris.opengrok.web.api.constraints.PositiveDurationValidator;
 
 import java.time.Duration;