First cut at working poller for MIBs

includes/polling/functions.inc.php

@@ -346,4 +346,28 @@ function poll_mib_def($device, $mib_name_table, $mib_subdir, $mib_oids, $mib_gra
   return TRUE;
 }
 
+/*
+ * Please use this instead of creating & updating RRD files manually.
+ * @param device Device object - only 'hostname' is used at present
+ * @param name Array of name objects - filename will be constructed using this with a "-" delimiter
+ * @param def Array of data definitions
+ * @param val Array of value definitions
+ *
+ */
+function rrd_create_update($device, $name, $def, $val, $step = 300)
+{
+    global $config;
+    $rrd = implode("/", array($config['rrd_dir'], $device['hostname'], safename(implode("-", $name)).".rrd"));
+    d_echo("RRD file: $rrd");
+
+    if (!is_file($rrd)) {
+        // add the --step and the rra definitions to the array
+        $newdef = "--step $step ".implode(' ', $def).$config['rrd_rra'];
+        d_echo("Creating RRD $rrd: $newdef");
+        rrdtool_create($rrd, $newdef);
+    }
+
+    rrdtool_update($rrd, $val);
+}
+
 ?>