Rewrite the rrd upgrade code to use the newly added xml2array function specifically for the rrd upgrade code.

This is about 4 times faster then our builtin parser. Hoping this can solve part of the the 45 minute upgrade cycles on
embedded builds

1 files changed, 136 insertions, 0 deletions

diff --git a/etc/inc/rrd.inc b/etc/inc/rrd.inc
index 1d02970..1160f40 100644
--- a/etc/inc/rrd.inc
+++ b/etc/inc/rrd.inc
@@ -616,3 +616,139 @@ function kill_traffic_collector() {
 	mwexec("ps awwwux | grep '/[u]pdaterrd.sh' | awk '{print $2}' | xargs kill");
 }
 
+/* This xml 2 array function is courtesy of the php.net comment section on xml_parse.
+ * it is roughly 4 times faster then our existing pfSense parser but due to the large
+ * size of the RRD xml dumps this is required.
+ * The reason we do not use it for pfSense is that it does not know about array fields
+ * which causes it to fail on array fields with single items. Possible Todo?
+ */
+function xml2array($contents, $get_attributes = 1, $priority = 'tag')
+{
+    if (!function_exists('xml_parser_create'))
+    {
+        return array ();
+    }
+    $parser = xml_parser_create('');
+    xml_parser_set_option($parser, XML_OPTION_TARGET_ENCODING, "UTF-8");
+    xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
+    xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 1);
+    xml_parse_into_struct($parser, trim($contents), $xml_values);
+    xml_parser_free($parser);
+    if (!$xml_values)
+        return; //Hmm...
+    $xml_array = array ();
+    $parents = array ();
+    $opened_tags = array ();
+    $arr = array ();
+    $current = & $xml_array;
+    $repeated_tag_index = array ();
+    foreach ($xml_values as $data)
+    {
+        unset ($attributes, $value);
+        extract($data);
+        $result = array ();
+        $attributes_data = array ();
+        if (isset ($value))
+        {
+            if ($priority == 'tag')
+                $result = $value;
+            else
+                $result['value'] = $value;
+        }
+        if (isset ($attributes) and $get_attributes)
+        {
+            foreach ($attributes as $attr => $val)
+            {
+                if ($priority == 'tag')
+                    $attributes_data[$attr] = $val;
+                else
+                    $result['attr'][$attr] = $val; //Set all the attributes in a array called 'attr'
+            }
+        }
+        if ($type == "open")
+        {
+            $parent[$level -1] = & $current;
+            if (!is_array($current) or (!in_array($tag, array_keys($current))))
+            {
+                $current[$tag] = $result;
+                if ($attributes_data)
+                    $current[$tag . '_attr'] = $attributes_data;
+                $repeated_tag_index[$tag . '_' . $level] = 1;
+                $current = & $current[$tag];
+            }
+            else
+            {
+                if (isset ($current[$tag][0]))
+                {
+                    $current[$tag][$repeated_tag_index[$tag . '_' . $level]] = $result;
+                    $repeated_tag_index[$tag . '_' . $level]++;
+                }
+                else
+                {
+                    $current[$tag] = array (
+                        $current[$tag],
+                        $result
+                    );
+                    $repeated_tag_index[$tag . '_' . $level] = 2;
+                    if (isset ($current[$tag . '_attr']))
+                    {
+                        $current[$tag]['0_attr'] = $current[$tag . '_attr'];
+                        unset ($current[$tag . '_attr']);
+                    }
+                }
+                $last_item_index = $repeated_tag_index[$tag . '_' . $level] - 1;
+                $current = & $current[$tag][$last_item_index];
+            }
+        }
+        elseif ($type == "complete")
+        {
+            if (!isset ($current[$tag]))
+            {
+                $current[$tag] = $result;
+                $repeated_tag_index[$tag . '_' . $level] = 1;
+                if ($priority == 'tag' and $attributes_data)
+                    $current[$tag . '_attr'] = $attributes_data;
+            }
+            else
+            {
+                if (isset ($current[$tag][0]) and is_array($current[$tag]))
+                {
+                    $current[$tag][$repeated_tag_index[$tag . '_' . $level]] = $result;
+                    if ($priority == 'tag' and $get_attributes and $attributes_data)
+                    {
+                        $current[$tag][$repeated_tag_index[$tag . '_' . $level] . '_attr'] = $attributes_data;
+                    }
+                    $repeated_tag_index[$tag . '_' . $level]++;
+                }
+                else
+                {
+                    $current[$tag] = array (
+                        $current[$tag],
+                        $result
+                    );
+                    $repeated_tag_index[$tag . '_' . $level] = 1;
+                    if ($priority == 'tag' and $get_attributes)
+                    {
+                        if (isset ($current[$tag . '_attr']))
+                        {
+                            $current[$tag]['0_attr'] = $current[$tag . '_attr'];
+                            unset ($current[$tag . '_attr']);
+                        }
+                        if ($attributes_data)
+                        {
+                            $current[$tag][$repeated_tag_index[$tag . '_' . $level] . '_attr'] = $attributes_data;
+                        }
+                    }
+                    $repeated_tag_index[$tag . '_' . $level]++; //0 and 1 index is already taken
+                }
+            }
+        }
+        elseif ($type == 'close')
+        {
+            $current = & $parent[$level -1];
+        }
+    }
+    return ($xml_array);
+}
+
+?>