[BZ-1401565] Validate if the server has already started before call R…

…EST handlers.

modules/enterprise/server/jar/src/main/java/org/rhq/enterprise/server/rest/SetCallerInterceptor.java

@@ -32,11 +32,15 @@
 import javax.interceptor.AroundInvoke;
 import javax.interceptor.InvocationContext;
 import javax.ws.rs.WebApplicationException;
+import javax.ws.rs.core.Response;
 import javax.ws.rs.core.StreamingOutput;
 
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
 import org.rhq.core.domain.auth.Subject;
 import org.rhq.enterprise.server.auth.SessionManager;
 import org.rhq.enterprise.server.auth.SubjectManagerLocal;
+import org.rhq.enterprise.server.core.StartupLocal;
 
 /**
  * Interceptor to set the 'caller' variable of the AbstractRestBean from the princpial
@@ -51,12 +55,17 @@
  */
 public class SetCallerInterceptor {
 
+    protected Log log = LogFactory.getLog(getClass().getName());
+
     @Resource
     private EJBContext ejbContext;
 
     @EJB
     private SubjectManagerLocal subjectManager;
 
+    @EJB
+    private StartupLocal startupBean;
+
     private SessionManager sessionManager = SessionManager.getInstance();
 
     /**
@@ -72,6 +81,14 @@ public Object setCaller(InvocationContext ctx) throws Exception {
 
         Subject caller=null;
         java.security.Principal p = ejbContext.getCallerPrincipal();
+        if (!startupBean.isInitialized()) {
+            String notInitMessage = "Tried to call REST endpoint but the server has not finished to startup";
+            log.warn(notInitMessage);
+            Response.ResponseBuilder builder;
+            builder = Response.status(Response.Status.SERVICE_UNAVAILABLE).entity(notInitMessage);
+            return builder.build();
+        }
+
         if (p!=null) {
             caller = subjectManager.getSubjectByName(p.getName());
         }