1 files changed, 15 insertions, 0 deletions

diff --git a/plugin/tail.php b/plugin/tail.php
index 0d3ca46..3afcc2e 100644
--- a/plugin/tail.php
+++ b/plugin/tail.php
@@ -12,5 +12,20 @@ $obj = new Type_Default($CONFIG);
 $obj->rrd_title = sprintf('tail: %s (%s)', $obj->args['pinstance'], $obj->args['type']);
 $obj->rrd_format = '%5.1lf%s';
 
+# backwards compatibility
+if ($CONFIG['version'] < 5) {
+        if (strcmp($obj->args['type'], 'gauge') != 0) {
+                $obj->data_sources = array('count');
+                if (count($obj->ds_names) == 1) {
+                        $obj->ds_names['count'] = $obj->ds_names['value'];
+                        unset($obj->ds_names['value']);
+                }
+                if (count($obj->colors) == 1) {
+                        $obj->colors['count'] = $obj->colors['value'];
+                        unset($obj->colors['value']);
+                }
+        }
+}
+
 collectd_flush($obj->identifiers);
 $obj->rrd_graph();