GUACAMOLE-990: Use translation string for "too many failed attempts" error.

extensions/guacamole-auth-ban/src/main/java/org/apache/guacamole/auth/ban/AuthenticationFailureTracker.java

@@ -22,9 +22,9 @@ package org.apache.guacamole.auth.ban;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentMap;
 import javax.servlet.http.HttpServletRequest;
-import org.apache.guacamole.GuacamoleClientTooManyException;
 import org.apache.guacamole.GuacamoleException;
 import org.apache.guacamole.GuacamoleServerException;
+import org.apache.guacamole.language.TranslatableGuacamoleClientTooManyException;
 import org.apache.guacamole.net.auth.Credentials;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -207,8 +207,9 @@ public class AuthenticationFailureTracker {
             // if too many failures have occurred
             if (status.isBlocked()) {
                 logger.debug("Blocking authentication attempt from address \"{}\" due to number of authentication failures.", address);
-                throw new GuacamoleClientTooManyException("Too many failed "
-                        + "authentication attempts. Please try again later.");
+                throw new TranslatableGuacamoleClientTooManyException("Too "
+                        + "many failed authentication attempts.",
+                        "LOGIN.ERROR_TOO_MANY_ATTEMPTS");
             }
 
             // Clean up tracking of failures if the address is no longer

extensions/guacamole-auth-ban/src/main/resources/guac-manifest.json

@@ -11,6 +11,10 @@
 
     "listeners" : [
         "org.apache.guacamole.auth.ban.BanningAuthenticationListener"
+    ],
+
+    "translations" : [
+        "translations/en.json"
     ]
 
 }

extensions/guacamole-auth-ban/src/main/resources/translations/en.json

@@ -0,0 +1,5 @@
+{
+    "LOGIN": {
+        "ERROR_TOO_MANY_ATTEMPTS" : "Too many failed authentication attempts. Please try again later."
+    }
+}