From feff0815472c05ad4966ef24253b0717e4059c58 Mon Sep 17 00:00:00 2001
From: Florian Schmaus <flo@geekplace.eu>
Date: Wed, 9 Dec 2015 10:49:15 +0100
Subject: [PATCH] Add "Roster loading failed" callback

---
 .../java/org/jivesoftware/smack/roster/Roster.java  |  3 +++
 .../smack/roster/RosterLoadedListener.java          | 13 +++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/smack-im/src/main/java/org/jivesoftware/smack/roster/Roster.java b/smack-im/src/main/java/org/jivesoftware/smack/roster/Roster.java
index 2a11e770c..2f6f8248e 100644
--- a/smack-im/src/main/java/org/jivesoftware/smack/roster/Roster.java
+++ b/smack-im/src/main/java/org/jivesoftware/smack/roster/Roster.java
@@ -404,6 +404,9 @@ public final class Roster extends Manager {
                     logLevel = Level.SEVERE;
                 }
                 LOGGER.log(logLevel, "Exception reloading roster" , exception);
+                for (RosterLoadedListener listener : rosterLoadedListeners) {
+                    listener.onRosterLoadingFailed(exception);
+                }
             }
         });
     }
diff --git a/smack-im/src/main/java/org/jivesoftware/smack/roster/RosterLoadedListener.java b/smack-im/src/main/java/org/jivesoftware/smack/roster/RosterLoadedListener.java
index 94f08f094..853cf31f2 100644
--- a/smack-im/src/main/java/org/jivesoftware/smack/roster/RosterLoadedListener.java
+++ b/smack-im/src/main/java/org/jivesoftware/smack/roster/RosterLoadedListener.java
@@ -35,4 +35,17 @@ public interface RosterLoadedListener {
      */
     public void onRosterLoaded(Roster roster);
 
+    /**
+     * Called when roster loading has failed.
+     * <p>
+     * Note that the reason for the failure could be as trivial as the connection being not
+     * connected, in which case the exception will be a
+     * {@link org.jivesoftware.smack.SmackException.NotConnectedException}.
+     * </p>
+     *
+     * @param exception the exception which caused the failure.
+     * @since 4.2
+     */
+    public void onRosterLoadingFailed(Exception exception);
+
 }