includes/cachev.php

   1 <?php
   2 /*=====================================================================*\
   3 || ###################################################################
   4 || # ViewSVN [#]version[#]
   5 || # Copyright ©2002-[#]year[#] Iris Studios, Inc.
   6 || #
   7 || # This program is free software; you can redistribute it and/or modify
   8 || # it under the terms of the GNU General Public License as published by
   9 || # the Free Software Foundation; version [#]gpl[#] of the License.
  10 || #
  11 || # This program is distributed in the hope that it will be useful, but
  12 || # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13 || # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  14 || # more details.
  15 || #
  16 || # You should have received a copy of the GNU General Public License along
  17 || # with this program; if not, write to the Free Software Foundation, Inc.,
  18 || # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  19 || ###################################################################
  20 \*=====================================================================*/
  21
  22 /**
  23 * File container for cacheV class
  24 *
  25 * @package      ViewSVN
  26 */
  27
  28 /**
  29 * cacheV
  30 *
  31 * This class is responsible for interacting with a given cacheV table.
  32 * It controls rebuilding from scratch, updates, and querying the cache.
  33 *
  34 * @author               Iris Studios, Inc.
  35 * @copyright    Copyright ©2002 - [#]year[#], Iris Studios, Inc.
  36 * @version              $Revision$
  37 * @package              ViewSVN
  38 *
  39 */
  40 class cacheV
  41 {
  42         /**
  43         * The registry
  44         * @var  object
  45         */
  46         var $registry = null;
  47
  48         /**
  49         * cacheV hash
  50         * @var  string
  51         */
  52         var $hash;
  53
  54         /**
  55         * Record count - the number of records in cacheV
  56         * @var  integer
  57         */
  58         var $count;
  59
  60         /**
  61         * Memcache for all fetched revisions so we don't have to query-dupe
  62         * @var  array
  63         */
  64         var $memcache = array('revs' => array(), 'nodes' => array());
  65
  66         // ###################################################################
  67         /**
  68         * Constructor: initialies the registry
  69         */
  70         function cacheV()
  71         {
  72                 global $viewsvn;
  73                 $this->registry =& $viewsvn;
  74         }
  75
  76         // ###################################################################
  77         /**
  78         * Sets the hash so we know what table we're dealing with
  79         *
  80         * @access       public
  81         */
  82         function set_hash()
  83         {
  84                 $this->hash = md5($this->registry->repos->fetch_path($this->registry->paths->repos));
  85         }
  86
  87         // ###################################################################
  88         /**
  89         * Returns a node string that has the beginning and ending slashes
  90         * removed to allow it to match to the _nodes cacheV table
  91         *
  92         * @access       public
  93         *
  94         * @param        string  Original string
  95         *
  96         * @return       string  Matchable string
  97         */
  98         function fetch_node_string($node)
  99         {
 100                 return preg_replace('#(^/|/$)#', '', $node);
 101         }
 102
 103         // ###################################################################
 104         /**
 105         * Returns a specific log entry
 106         *
 107         * @access       public
 108         *
 109         * @param        integer Revision number
 110         *
 111         * @return       array   Complete revision/commit entry
 112         */
 113         function fetch_revision($revision)
 114         {
 115                 $revision = $this->registry->clean($revision, TYPE_UINT);
 116
 117                 if (!isset($this->memcache['revs']["$revision"]))
 118                 {
 119                         $this->memcache['revs']["$revision"] = $this->registry->db->query_first("SELECT * FROM {$this->hash}_revs " . ($revision == 0 ? " ORDER BY revision DESC LIMIT 1" : "WHERE revision = $revision"));
 120                         $this->memcache['revs']["$revision"]['files'] = unserialize($this->memcache['revs']["$revision"]['files']);
 121                 }
 122
 123                 return $this->memcache['revs']["$revision"];
 124         }
 125
 126         // ###################################################################
 127         /**
 128         * Returns the revision entry before the specified one
 129         *
 130         * @access       public
 131         *
 132         * @param        string  Node path
 133         * @param        integer Revision number
 134         *
 135         * @return       array   Complete revision/commit entry
 136         */
 137         function fetch_prev_revision($node, $revision)
 138         {
 139                 $data = $this->fetch_node($node);
 140                 $data = $data['history'];
 141
 142                 if (count($data['history']) < 1)
 143                 {
 144                         return $this->fetch_revision(0);
 145                 }
 146
 147                 unset($data[ max(array_keys($data)) ]);
 148
 149                 return $this->fetch_revision(max(array_keys($data)));
 150         }
 151
 152         // ###################################################################
 153         /**
 154         * Fetches the latest revision for a given path
 155         *
 156         * @access       public
 157         *
 158         * @param        string  Node path
 159         *
 160         * @return       integer Latest revision; FALSE if none (not in HEAD)
 161         */
 162         function fetch_node($node)
 163         {
 164                 $node = $this->fetch_node_string($node);
 165                 if (!isset($this->memcache['nodes']["$node"]))
 166                 {
 167                         $result = $this->registry->db->query_first("SELECT * FROM {$this->hash}_nodes WHERE name = '" . $this->registry->escape($node) . "'");
 168                         if ($result == false)
 169                         {
 170                                 return false;
 171                         }
 172
 173                         $this->memcache['nodes']["$node"] = $result;
 174                         $this->memcache['nodes']["$node"]['history'] = unserialize($this->memcache['nodes']["$node"]['history']);
 175                 }
 176
 177                 return $this->memcache['nodes']["$node"];
 178         }
 179
 180         // ###################################################################
 181         /**
 182         * Checks to see if a given node is a directory. Returns TRUE if so.
 183         *
 184         * @access       public
 185         *
 186         * @param        string  Node path
 187         *
 188         * @return       bool    TRUE if directory, FALSE if not
 189         */
 190         function isdir($node)
 191         {
 192                 $node = $this->fetch_node($node);
 193                 if ($node['node'] == 'dir')
 194                 {
 195                         return true;
 196                 }
 197
 198                 return false;
 199         }
 200
 201         // ###################################################################
 202         /**
 203         * Checks to see if it's necessary to rebuild the cacheV table for the
 204         * current repository. This is done by making sure $count > 0. If not,
 205         * then rebuild() is run. This also checks against the cacheV table
 206         * to make sure that it's up-to-date against the root repository.
 207         *
 208         * @access       public
 209         */
 210         function exec_build()
 211         {
 212                 $result = $this->registry->db->query_first("SELECT MAX(revision) AS max FROM {$this->hash}_revs");
 213                 $this->count = $result['max'];
 214
 215                 // time to go from the start
 216                 if ($this->count == 0)
 217                 {
 218                         $this->build(null);
 219                 }
 220                 else
 221                 {
 222                         // send an Xquery to SVN to see if we need to update
 223                         $query = $this->registry->svn->svn('info --xml ' . $this->registry->repos->fetch_path($this->registry->paths->repos));
 224                         $query = implode("\n", $query);
 225
 226                         $tree = $this->registry->xml->parse($query);
 227
 228                         if ($tree['info']['entry']['revision'] != $this->count)
 229                         {
 230                                 $this->build($this->count);
 231                         }
 232                 }
 233         }
 234
 235         // ###################################################################
 236         /**
 237         * Builds the cacheV table. This can be used to build only part of the
 238         * cache or the entire thing, if the revision is set to NULL.
 239         *
 240         * @access       public
 241         *
 242         * @param        integer Lower (current) revision
 243         */
 244         function build($revision)
 245         {
 246                 $start = microtime();
 247
 248                 // get _revs
 249                 $output = $this->registry->svn->svn('log --xml -v ' . ($revision !== null ? '-r' . $revision . ':HEAD ' : '') . $this->registry->repos->fetch_path($this->registry->paths->repos));
 250                 $output = implode("\n", $output);
 251                 $tree = $this->registry->xml->parse($output);
 252
 253                 // get _nodes
 254                 $output = $this->registry->svn->svn('info --xml -R ' . ($revision !== null ? '-r' . $revision . ':HEAD ' : '') . $this->registry->repos->fetch_path($this->registry->paths->repos));
 255                 $output = implode("\n", $output);
 256                 $infolist = $this->registry->xml->parse($output);
 257
 258                 // other part of _nodes: properties
 259                 $output = $this->registry->svn->svn('proplist -v -R ' . ($revision !== null ? ' -r' . $revision . ':HEAD ' : '') . $this->registry->repos->fetch_path($this->registry->paths->repos));
 260                 $index = null;
 261                 foreach ($output AS $line)
 262                 {
 263                         if (preg_match('#^Properties on \'(.*?)\':$#', $line, $bits))
 264                         {
 265                                 $proplist["$index"]["$curprop"] = trim($proplist["$index"]["$curprop"]);
 266                                 $index = str_replace($this->registry->repos->fetch_path($this->registry->paths->repos), '', $bits[1]);
 267                                 $capture = false;
 268                         }
 269                         else
 270                         {
 271                                 if (preg_match('#^\s+(.*)\s:\s(.*)#', $line, $matches))
 272                                 {
 273                                         $curprop = $matches[1];
 274                                         $proplist["$index"]["$curprop"] = $matches[2] . "\n";
 275                                         $capture = true;
 276                                 }
 277                                 else if ($capture == true)
 278                                 {
 279                                         $proplist["$index"]["$curprop"] .= $line . "\n";
 280                                 }
 281                         }
 282                 }
 283
 284                 // construct _revs inserts and the list of add revisions
 285                 foreach ($tree['log']['logentry'] AS $log)
 286                 {
 287                         $this->registry->xml->unify_node($log['paths']['path']);
 288
 289                         $inserts['revs'][] = "($log[revision], '{$log['author']['value']}', '{$log['date']['value']}', '" . $this->registry->escape($log['msg']['value']) . "', '" . $this->registry->escape(serialize($log['paths']['path'])) . "')";
 290
 291                         foreach ($log['paths']['path'] AS $path)
 292                         {
 293                                 if (trim($path['action']) == 'A')
 294                                 {
 295                                         $path['value'] = preg_replace('#^/#', '', $path['value']);
 296                                         $addlist["$path[value]"] = $log['revision'];
 297                                 }
 298                         }
 299                 }
 300
 301                 // construct list of HEAD nodes for _nodes
 302                 foreach ($infolist['info']['entry'] AS $node)
 303                 {
 304                         $history = $this->registry->svn->svn('log --xml ' . $node['url']['value']);
 305                         $history = implode("\n", $history);
 306                         $history = $this->registry->xml->parse($history);
 307
 308                         $loglist = array();
 309                         $latestrev = -1;
 310                         foreach ($history['log']['logentry'] AS $log)
 311                         {
 312                                 $latestrev = ($log['revision'] > $latestrev ? $log['revision'] : $latestrev);
 313                                 $loglist["$log[revision]"] = array(
 314                                         'revision'      => $log['revision'],
 315                                         'author'        => $log['author']['value'],
 316                                         'date'          => $log['date']['value'],
 317                                         'message'       => $log['msg']['value']
 318                                 );
 319                         }
 320
 321                         $inserts['nodes'][] = "('$node[path]', '" . $node['kind'] . "', $latestrev, '" . $this->registry->escape(serialize($loglist)) . "', '" . $this->registry->escape(serialize($proplist["$node[path]"])) . "')";
 322                 }
 323
 324                 // insert _revs
 325                 $this->registry->db->query("
 326                         REPLACE INTO {$this->hash}_revs
 327                                 (revision, author, dateline, message, files)
 328                         VALUES
 329                                 " . implode(",\n", $inserts['revs'])
 330                 );
 331
 332                 // insert _nodes
 333                 $this->registry->db->query("
 334                         REPLACE INTO {$this->hash}_nodes
 335                                 (name, node, revision, history, properties)
 336                         VALUES
 337                                 " . implode(",\n", $inserts['nodes'])
 338                 );
 339
 340                 $this->registry->debug("TIME TO (RE)BUILD: " . $this->registry->funct->fetch_microtime_diff($start));
 341         }
 342 }
 343
 344 /*=====================================================================*\
 345 || ###################################################################
 346 || # $HeadURL$
 347 || # $Id$
 348 || ###################################################################
 349 \*=====================================================================*/
 350 ?>