Added CMSException.

The CMSException was added to simplify error handling in REST services.
The exception may include an error message and some other attributes.
When the server throws a CMSException (or its subclass), the exception
will be marshalled into XML and unmarshalled by the client, then thrown
again as a new exception which can be caught by the application.

Ticket #100

1 files changed, 43 insertions, 0 deletions

diff --git a/base/kra/functional/src/com/netscape/cms/servlet/test/DRMErrorInterceptor.java b/base/kra/functional/src/com/netscape/cms/servlet/test/DRMErrorInterceptor.java
new file mode 100644
index 000000000..7572acef5
--- /dev/null
+++ b/base/kra/functional/src/com/netscape/cms/servlet/test/DRMErrorInterceptor.java
@@ -0,0 +1,43 @@
+package com.netscape.cms.servlet.test;
+
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.MultivaluedMap;
+
+import org.jboss.resteasy.client.ClientResponse;
+import org.jboss.resteasy.client.core.ClientErrorInterceptor;
+
+import com.netscape.cms.servlet.base.CMSException;
+
+public class DRMErrorInterceptor implements ClientErrorInterceptor  {
+
+    public void handle(ClientResponse<?> response) {
+
+        // handle HTTP code 4xx and 5xx
+        int code = response.getResponseStatus().getStatusCode();
+        if (code < 400) return;
+
+        MultivaluedMap<String, String> headers = response.getHeaders();
+        String contentType = headers.getFirst("Content-Type");
+
+        // handle XML content only
+        if (!contentType.startsWith(MediaType.TEXT_XML)) return;
+
+        CMSException exception;
+
+        try {
+            // Requires RESTEasy 2.3.2
+            // https://issues.jboss.org/browse/RESTEASY-652
+            CMSException.Data data = response.getEntity(CMSException.Data.class);
+
+            Class<?> clazz = Class.forName(data.className);
+            exception = (CMSException) clazz.getConstructor(CMSException.Data.class).newInstance(data);
+
+        } catch (Exception e) {
+            e.printStackTrace();
+            return;
+        }
+
+        throw exception;
+    }
+
+}