[evolution] Bug 743547 - Report one error only once for folders refresh

[Milan Crha <mcrha src gnome org>]

commit 44623f1b005f846e68f6140d42c9c78ffb9c4c28
Author: Milan Crha <mcrha redhat com>
Date:   Wed Feb 11 15:44:12 2015 +0100

    Bug 743547 - Report one error only once for folders refresh

 mail/mail-send-recv.c |   15 ++++++++++++++-
 1 files changed, 14 insertions(+), 1 deletions(-)
---
diff --git a/mail/mail-send-recv.c b/mail/mail-send-recv.c
index 4fac179..f4eebe4 100644
--- a/mail/mail-send-recv.c
+++ b/mail/mail-send-recv.c
@@ -1230,6 +1230,7 @@ refresh_folders_exec (struct _refresh_folders_msg *m,
        gint i;
        gboolean success;
        gboolean delete_junk = FALSE, expunge = FALSE;
+       GHashTable *known_errors;
        GError *local_error = NULL;
        gulong handler_id = 0;
 
@@ -1254,6 +1255,8 @@ refresh_folders_exec (struct _refresh_folders_msg *m,
                goto exit;
        }
 
+       known_errors = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
+
        for (i = 0; i < m->folders->len; i++) {
                folder = e_mail_session_uri_to_folder_sync (
                        E_MAIL_SESSION (m->info->session),
@@ -1263,7 +1266,13 @@ refresh_folders_exec (struct _refresh_folders_msg *m,
                        camel_folder_refresh_info_sync (folder, cancellable, &local_error);
 
                if (local_error != NULL) {
-                       if (!g_error_matches (local_error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
+                       if (g_hash_table_contains (known_errors, local_error->message)) {
+                               /* Received the same error message multiple times; there can be some
+                                  connection issue probably, thus skip the rest folder updates for now */
+                               g_clear_object (&folder);
+                               g_clear_error (&local_error);
+                               break;
+                       } else if (!g_error_matches (local_error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
                                CamelStore *store = m->store;
                                const gchar *full_name;
 
@@ -1276,6 +1285,9 @@ refresh_folders_exec (struct _refresh_folders_msg *m,
                                }
 
                                report_error_to_ui (CAMEL_SERVICE (store), full_name, local_error);
+
+                               /* To not report one error for multiple folders multiple times */
+                               g_hash_table_insert (known_errors, g_strdup (local_error->message), 
GINT_TO_POINTER (1));
                        }
 
                        g_clear_error (&local_error);
@@ -1294,6 +1306,7 @@ refresh_folders_exec (struct _refresh_folders_msg *m,
        }
 
        camel_operation_pop_message (m->info->cancellable);
+       g_hash_table_destroy (known_errors);
 
 exit:
        if (handler_id > 0)