maintenance/mcc.php

   1 <?php
   2 /**
   3  * memcached diagnostic tool
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @todo document
  22  * @ingroup Maintenance
  23  */
  24
  25 /** */
  26 require_once( __DIR__ . '/commandLine.inc' );
  27
  28 $mcc = new MWMemcached( array( 'persistent' => true/*, 'debug' => true*/ ) );
  29 $mcc->set_servers( $wgMemCachedServers );
  30 # $mcc->set_debug( true );
  31
  32 function mccShowHelp( $command ) {
  33         $commandList = array(
  34                 'get' => 'grabs something',
  35                 'getsock' => 'lists sockets',
  36                 'set' => 'changes something',
  37                 'delete' => 'deletes something',
  38                 'history' => 'show command line history',
  39                 'server' => 'show current memcached server',
  40                 'dumpmcc' => 'shows the whole thing',
  41                 'exit' => 'exit mcc',
  42                 'quit' => 'exit mcc',
  43                 'help' => 'help about a command',
  44         );
  45         if ( !$command ) {
  46                 $command = 'fullhelp';
  47         }
  48         if ( $command === 'fullhelp' ) {
  49                 $max_cmd_len = max( array_map( 'strlen', array_keys( $commandList ) ) );
  50                 foreach ( $commandList as $cmd => $desc ) {
  51                         printf( "%-{$max_cmd_len}s: %s\n", $cmd, $desc );
  52                 }
  53         } elseif ( isset( $commandList[$command] ) ) {
  54                 print "$command: $commandList[$command]\n";
  55         } else {
  56                 print "$command: command does not exist or no help for it\n";
  57         }
  58 }
  59
  60 do {
  61         $bad = false;
  62         $showhelp = false;
  63         $quit = false;
  64
  65         $line = Maintenance::readconsole();
  66         if ( $line === false ) exit;
  67
  68         $args = explode( ' ', $line );
  69         $command = array_shift( $args );
  70
  71         // process command
  72         switch ( $command ) {
  73                 case 'help':
  74                         // show an help message
  75                         mccShowHelp( array_shift( $args ) );
  76                 break;
  77
  78                 case 'get':
  79                         $sub = '';
  80                         if ( array_key_exists( 1, $args ) ) {
  81                                 $sub = $args[1];
  82                         }
  83                         print "Getting {$args[0]}[$sub]\n";
  84                         $res = $mcc->get( $args[0] );
  85                         if ( array_key_exists( 1, $args ) ) {
  86                                 $res = $res[$args[1]];
  87                         }
  88                         if ( $res === false ) {
  89                                 # print 'Error: ' . $mcc->error_string() . "\n";
  90                                 print "MemCached error\n";
  91                         } elseif ( is_string( $res ) ) {
  92                                 print "$res\n";
  93                         } else {
  94                                 var_dump( $res );
  95                         }
  96                 break;
  97
  98                 case 'getsock':
  99                         $res = $mcc->get( $args[0] );
 100                         $sock = $mcc->get_sock( $args[0] );
 101                         var_dump( $sock );
 102                         break;
 103
 104                 case 'server':
 105                         if ( $mcc->_single_sock !== null ) {
 106                                 print $mcc->_single_sock . "\n";
 107                                 break;
 108                         }
 109                         $res = $mcc->get( $args[0] );
 110                         $hv = $mcc->_hashfunc( $args[0] );
 111                         for ( $i = 0; $i < 3; $i++ ) {
 112                                 print $mcc->_buckets[$hv % $mcc->_bucketcount] . "\n";
 113                                 $hv += $mcc->_hashfunc( $i . $args[0] );
 114                         }
 115                         break;
 116
 117                 case 'set':
 118                         $key = array_shift( $args );
 119                         if ( $args[0] == "#" && is_numeric( $args[1] ) ) {
 120                                 $value = str_repeat( '*', $args[1] );
 121                         } else {
 122                                 $value = implode( ' ', $args );
 123                         }
 124                         if ( !$mcc->set( $key, $value, 0 ) ) {
 125                                 # print 'Error: ' . $mcc->error_string() . "\n";
 126                                 print "MemCached error\n";
 127                         }
 128                         break;
 129
 130                 case 'delete':
 131                         $key = implode( ' ', $args );
 132                         if ( !$mcc->delete( $key ) ) {
 133                                 # print 'Error: ' . $mcc->error_string() . "\n";
 134                                 print "MemCached error\n";
 135                         }
 136                         break;
 137
 138                 case 'history':
 139                         if ( function_exists( 'readline_list_history' ) ) {
 140                                 foreach ( readline_list_history() as $num => $line ) {
 141                                         print "$num: $line\n";
 142                                 }
 143                         } else {
 144                                 print "readline_list_history() not available\n";
 145                         }
 146                         break;
 147
 148                 case 'dumpmcc':
 149                         var_dump( $mcc );
 150                         break;
 151
 152                 case 'quit':
 153                 case 'exit':
 154                         $quit = true;
 155                         break;
 156
 157                 default:
 158                         $bad = true;
 159         } // switch() end
 160
 161         if ( $bad ) {
 162                 if ( $command ) {
 163                         print "Bad command\n";
 164                 }
 165         } else {
 166                 if ( function_exists( 'readline_add_history' ) ) {
 167                         readline_add_history( $line );
 168                 }
 169         }
 170 } while ( !$quit );