[GNUnet-SVN] r15127 - gauger/web

[gnunet]

Author: bartpolot
Date: 2011-04-29 19:04:00 +0200 (Fri, 29 Apr 2011)
New Revision: 15127

Modified:
   gauger/web/io.php
Log:
Added range handling on POST requests


Modified: gauger/web/io.php
===================================================================
--- gauger/web/io.php   2011-04-29 16:33:50 UTC (rev 15126)
+++ gauger/web/io.php   2011-04-29 17:04:00 UTC (rev 15127)
@@ -65,12 +65,32 @@
 function get_range_global() {
     global $DATADIR;
     $f = fopen($DATADIR.'global_range.dat', 'r');
+    flock($f, LOCK_SH);
     $buffer = fgets($f, 512);
+    flock($f, LOCK_UN);
     fclose($f);
     return explode(' ', $buffer);
 }
 
 /**
+ * add_range_global: set global range of data considering the new revision
+ * @param data new revision
+ */
+function add_range_global($data) {
+    global $DATADIR;
+    $f = fopen($DATADIR.'global_range.dat', 'r+');
+    flock($f, LOCK_EX);
+    $range = explode(' ', fgets($f, 512));
+    $range[0] = min($range[0], $data);
+    $range[1] = max($range[1], $data);
+    fseek($f, 0, SEEK_SET);
+    fwrite($f, implode(' ', $data));
+    ftruncate($f, ftell($f));
+    flock($f, LOCK_UN);
+    fclose($f);
+}
+
+/**
  * get_range: get range of a metric in a host
  * @param $host name of the host
  * @param $counter file name of the metric
@@ -340,5 +360,6 @@
         header('HTTP/1.1 500 Internal Server Error');
         die("cannot add data to $datadir.dat");
     }
+    add_range_global($rev);
     die("OK");
 }