Exception stack trace is exposed

Issue-ID: CPS-249
Signed-off-by: niamhcore <niamh.core@est.tech>
Change-Id: I1e03c17364c925c6f976f2147cb17f8ac26ba995
(cherry picked from commit 3de08a9590b5590d5961d9e4047751760043307e)

4 files changed, 21 insertions, 58 deletions

diff --git a/cps-nf-proxy-rest/pom.xml b/cps-nf-proxy-rest/pom.xml
index b74cf6ec6..04dfa9a31 100755
--- a/cps-nf-proxy-rest/pom.xml
+++ b/cps-nf-proxy-rest/pom.xml
@@ -46,10 +46,6 @@
             <groupId>io.swagger</groupId>
             <artifactId>swagger-annotations</artifactId>
         </dependency>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-        </dependency>
         <!-- T E S T   D E P E N D E N C I E S -->
         <dependency>
             <groupId>org.codehaus.groovy</groupId>
diff --git a/cps-nf-proxy-rest/src/main/java/org/onap/cps/nfproxy/rest/exceptions/NfProxyRestExceptionHandler.java b/cps-nf-proxy-rest/src/main/java/org/onap/cps/nfproxy/rest/exceptions/NfProxyRestExceptionHandler.java
index 96a1cb267..9a90f55de 100644
--- a/cps-nf-proxy-rest/src/main/java/org/onap/cps/nfproxy/rest/exceptions/NfProxyRestExceptionHandler.java
+++ b/cps-nf-proxy-rest/src/main/java/org/onap/cps/nfproxy/rest/exceptions/NfProxyRestExceptionHandler.java
@@ -22,7 +22,6 @@ package org.onap.cps.nfproxy.rest.exceptions;
 import lombok.AccessLevel;
 import lombok.NoArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
-import org.apache.commons.lang3.exception.ExceptionUtils;
 import org.onap.cps.nfproxy.rest.controller.NfProxyController;
 import org.onap.cps.nfproxy.rest.model.ErrorMessage;
 import org.onap.cps.spi.exceptions.CpsException;
@@ -53,26 +52,18 @@ public class NfProxyRestExceptionHandler {
 
     @ExceptionHandler({CpsException.class})
     public static ResponseEntity<Object> handleAnyOtherCpsExceptions(final CpsException exception) {
-        return buildErrorResponse(HttpStatus.INTERNAL_SERVER_ERROR, exception.getMessage(), extractDetails(exception));
+        return buildErrorResponse(HttpStatus.INTERNAL_SERVER_ERROR, exception);
     }
 
     private static ResponseEntity<Object> buildErrorResponse(final HttpStatus status, final Exception exception) {
-        return buildErrorResponse(status, exception.getMessage(), ExceptionUtils.getStackTrace(exception));
-    }
-
-    private static ResponseEntity<Object> buildErrorResponse(final HttpStatus status, final String message,
-        final String details) {
-        log.error("An error has occurred : {} Status: {} Details: {}", message, status, details);
+        if (exception.getCause() != null || !(exception instanceof CpsException)) {
+            log.error("Exception occurred", exception);
+        }
         final ErrorMessage errorMessage = new ErrorMessage();
         errorMessage.setStatus(status.toString());
-        errorMessage.setMessage(message);
-        errorMessage.setDetails(details);
+        errorMessage.setMessage(exception.getMessage());
+        errorMessage.setDetails(exception instanceof CpsException ? ((CpsException) exception).getDetails() :
+            "Check logs for details.");
         return new ResponseEntity<>(errorMessage, status);
     }
-
-    private static String extractDetails(final CpsException exception) {
-        return exception.getCause() == null
-            ? exception.getDetails()
-            : ExceptionUtils.getStackTrace(exception.getCause());
-    }
 }
diff --git a/cps-rest/src/main/java/org/onap/cps/rest/exceptions/CpsRestExceptionHandler.java b/cps-rest/src/main/java/org/onap/cps/rest/exceptions/CpsRestExceptionHandler.java
index 6e851519a..d620139b7 100644
--- a/cps-rest/src/main/java/org/onap/cps/rest/exceptions/CpsRestExceptionHandler.java
+++ b/cps-rest/src/main/java/org/onap/cps/rest/exceptions/CpsRestExceptionHandler.java
@@ -20,7 +20,6 @@
 package org.onap.cps.rest.exceptions;
 
 import lombok.extern.slf4j.Slf4j;
-import org.apache.commons.lang3.exception.ExceptionUtils;
 import org.onap.cps.rest.controller.AdminRestController;
 import org.onap.cps.rest.controller.DataRestController;
 import org.onap.cps.rest.controller.QueryRestController;
@@ -52,7 +51,8 @@ public class CpsRestExceptionHandler {
      * @param exception the exception to handle
      * @return response with response code 500.
      */
-    @ExceptionHandler public static ResponseEntity<Object> handleInternalServerErrorExceptions(
+    @ExceptionHandler
+    public static ResponseEntity<Object> handleInternalServerErrorExceptions(
         final Exception exception) {
         return buildErrorResponse(HttpStatus.INTERNAL_SERVER_ERROR, exception);
     }
@@ -60,41 +60,33 @@ public class CpsRestExceptionHandler {
     @ExceptionHandler({ModelValidationException.class, DataValidationException.class, CpsAdminException.class,
         CpsPathException.class})
     public static ResponseEntity<Object> handleBadRequestExceptions(final CpsException exception) {
-        return buildErrorResponse(HttpStatus.BAD_REQUEST, exception.getMessage(), extractDetails(exception));
+        return buildErrorResponse(HttpStatus.BAD_REQUEST, exception);
     }
 
     @ExceptionHandler({NotFoundInDataspaceException.class, DataNodeNotFoundException.class})
     public static ResponseEntity<Object> handleNotFoundExceptions(final CpsException exception) {
-        return buildErrorResponse(HttpStatus.NOT_FOUND, exception.getMessage(), extractDetails(exception));
+        return buildErrorResponse(HttpStatus.NOT_FOUND, exception);
     }
 
     @ExceptionHandler({DataInUseException.class})
     public static ResponseEntity<Object> handleDataInUseException(final CpsException exception) {
-        return buildErrorResponse(HttpStatus.CONFLICT, exception.getMessage(), extractDetails(exception));
+        return buildErrorResponse(HttpStatus.CONFLICT, exception);
     }
 
     @ExceptionHandler({CpsException.class})
     public static ResponseEntity<Object> handleAnyOtherCpsExceptions(final CpsException exception) {
-        return buildErrorResponse(HttpStatus.INTERNAL_SERVER_ERROR, exception.getMessage(), extractDetails(exception));
+        return buildErrorResponse(HttpStatus.INTERNAL_SERVER_ERROR, exception);
     }
 
     private static ResponseEntity<Object> buildErrorResponse(final HttpStatus status, final Exception exception) {
-        return buildErrorResponse(status, exception.getMessage(), ExceptionUtils.getStackTrace(exception));
-    }
-
-    private static ResponseEntity<Object> buildErrorResponse(final HttpStatus status, final String message,
-        final String details) {
-        log.error("An error has occurred : {} Status: {} Details: {}", message, status, details);
+        if (exception.getCause() != null || !(exception instanceof CpsException)) {
+            log.error("Exception occurred", exception);
+        }
         final ErrorMessage errorMessage = new ErrorMessage();
         errorMessage.setStatus(status.toString());
-        errorMessage.setMessage(message);
-        errorMessage.setDetails(details);
+        errorMessage.setMessage(exception.getMessage());
+        errorMessage.setDetails(exception instanceof CpsException ? ((CpsException) exception).getDetails() :
+            "Check logs for details.");
         return new ResponseEntity<>(errorMessage, status);
     }
-
-    private static String extractDetails(final CpsException exception) {
-        return exception.getCause() == null
-            ? exception.getDetails()
-            : ExceptionUtils.getStackTrace(exception.getCause());
-    }
 }
diff --git a/cps-rest/src/test/groovy/org/onap/cps/rest/exceptions/CpsRestExceptionHandlerSpec.groovy b/cps-rest/src/test/groovy/org/onap/cps/rest/exceptions/CpsRestExceptionHandlerSpec.groovy
index f9ada9a21..1216f8d50 100644
--- a/cps-rest/src/test/groovy/org/onap/cps/rest/exceptions/CpsRestExceptionHandlerSpec.groovy
+++ b/cps-rest/src/test/groovy/org/onap/cps/rest/exceptions/CpsRestExceptionHandlerSpec.groovy
@@ -86,33 +86,27 @@ class CpsRestExceptionHandlerSpec extends Specification {
 
 
     def 'Get request with runtime exception returns HTTP Status Internal Server Error'() {
-
         when: 'runtime exception is thrown by the service'
             setupTestException(new IllegalStateException(errorMessage))
             def response = performTestRequest()
-
         then: 'an HTTP Internal Server Error response is returned with correct message and details'
             assertTestResponse(response, INTERNAL_SERVER_ERROR, errorMessage, null)
     }
 
     def 'Get request with generic CPS exception returns HTTP Status Internal Server Error'() {
-
         when: 'generic CPS exception is thrown by the service'
             setupTestException(new CpsException(errorMessage, errorDetails))
             def response = performTestRequest()
-
         then: 'an HTTP Internal Server Error response is returned with correct message and details'
             assertTestResponse(response, INTERNAL_SERVER_ERROR, errorMessage, errorDetails)
     }
 
     def 'Get request with no data found CPS exception returns HTTP Status Not Found'() {
-
         when: 'no data found CPS exception is thrown by the service'
             def dataspaceName = 'MyDataSpace'
             def descriptionOfObject = 'Description'
             setupTestException(new NotFoundInDataspaceException(dataspaceName, descriptionOfObject))
             def response = performTestRequest()
-
         then: 'an HTTP Not Found response is returned with correct message and details'
             assertTestResponse(response, NOT_FOUND, 'Object not found',
                     'Description does not exist in dataspace MyDataSpace.')
@@ -120,11 +114,9 @@ class CpsRestExceptionHandlerSpec extends Specification {
 
     @Unroll
     def 'request with an expectedObjectTypeInMessage object already defined exception returns HTTP Status Bad Request'() {
-
         when: 'no data found CPS exception is thrown by the service'
             setupTestException(exceptionThrown)
             def response = performTestRequest()
-
         then: 'an HTTP Bad Request response is returned with correct message an details'
             assertTestResponse(response, BAD_REQUEST,
                     "Duplicate ${expectedObjectTypeInMessage}",
@@ -138,14 +130,11 @@ class CpsRestExceptionHandlerSpec extends Specification {
 
     @Unroll
     def 'Get request with a #exceptionThrown.class.simpleName returns HTTP Status Bad Request'() {
-
         when: 'CPS validation exception is thrown by the service'
             setupTestException(exceptionThrown)
             def response = performTestRequest()
-
         then: 'an HTTP Bad Request response is returned with correct message and details'
             assertTestResponse(response, BAD_REQUEST, errorMessage, errorDetails)
-
         where: 'the following exceptions are thrown'
             exceptionThrown << [new ModelValidationException(errorMessage, errorDetails, null),
                                 new DataValidationException(errorMessage, errorDetails, null),
@@ -154,24 +143,20 @@ class CpsRestExceptionHandlerSpec extends Specification {
 
     @Unroll
     def 'Delete request with a #exceptionThrown.class.simpleName returns HTTP Status Conflict'() {
-
         when: 'CPS validation exception is thrown by the service'
             setupTestException(exceptionThrown)
             def response = performTestRequest()
-
         then: 'an HTTP Conflict response is returned with correct message and details'
             assertTestResponse(response, CONFLICT, exceptionThrown.getMessage(), exceptionThrown.getDetails())
-
         where: 'the following exceptions are thrown'
             exceptionThrown << [new DataInUseException(dataspaceName, existingObjectName),
                                 new SchemaSetInUseException(dataspaceName, existingObjectName)]
     }
 
     /*
-     * NB. The test uses 'get JSON by id' endpoint and associated service method invocation
+     * NB. The test uses 'get anchors' endpoint and associated service method invocation
      * to test the exception handling. The endpoint chosen is not a subject of test.
      */
-
     def setupTestException(exception) {
         mockCpsAdminService.getAnchors(_) >> { throw exception}
     }
@@ -182,8 +167,7 @@ class CpsRestExceptionHandlerSpec extends Specification {
         ).andReturn().response
     }
 
-    void assertTestResponse(response, expectedStatus,
-                            expectedErrorMessage, expectedErrorDetails) {
+    static void assertTestResponse(response, expectedStatus, expectedErrorMessage, expectedErrorDetails) {
         assert response.status == expectedStatus.value()
         def content = new JsonSlurper().parseText(response.contentAsString)
         assert content['status'] == expectedStatus.toString()