www/database.php

   1
   2 <?php
   3
   4 # TODO: clean up this aweful hack.
   5 system("/usr/share/monitor-server/phpconfig.py > /var/www/cgi-bin/monitor/monitorconfig.php");
   6 include 'monitorconfig.php';
   7 define("PICKLE_PATH", MONITOR_DATA_ROOT);
   8
   9 class Pickle
  10 {
  11         public function load($name)
  12         {
  13                 if ( ! $this->exists("production." . $name) )
  14                 {
  15                         print "Exception: No such file %s" . $name . "\n";
  16                         return NULL;
  17                 }
  18                 $name = "production." . $name;
  19                 $fname = $this->__file($name);
  20                 $o = unserialize(file_get_contents($fname));
  21
  22                 return $o;
  23         }
  24         public function dump($name, $obj)
  25         {
  26                 if ( ! file_exists(PICKLE_PATH) )
  27                 {
  28                         if ( ! mkdir(PICKLE_PATH, 0777, True) )
  29                         {
  30                                 print "Exception: Unable to create directory :" . PICKLE_PATH . "\n";
  31                         }
  32                 }
  33                 $name = "production." . $name;
  34                 $fname = $this->__file($name);
  35
  36                 return file_put_contents($fname, serialize($obj));
  37         }
  38         private function __file($name)
  39         {
  40                 return sprintf("%s/%s.phpserial", PICKLE_PATH, $name);
  41         }
  42
  43         public function exists($name)
  44         {
  45                 return file_exists($this->__file($name));
  46         }
  47
  48         public function remove($name)
  49         {
  50                 return unlink($this->__file($name));
  51         }
  52
  53         public function if_cached_else($cond, $name, $function)
  54         {
  55                 if ( $cond and $this->exists("production.%s" % $name) )
  56                 {
  57                         $o = $this->load($name);
  58                 } else {
  59                         $o = $function();
  60                         if ($cond)
  61                         {
  62                                 $this->dump($name, $o); # cache the object using 'name'
  63                         }
  64                 }
  65                 return o;
  66         }
  67 }
  68
  69 ?>