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 = $data['history'];
 141
 142                 unset($data[ max(array_keys($data)) ]);
 143
 144                 return $this->fetch_revision(max(array_keys($data)));
 145         }
 146
 147         // ###################################################################
 148         /**
 149         * Fetches the latest revision for a given path
 150         *
 151         * @access       public
 152         *
 153         * @param        string  Node path
 154         *
 155         * @return       integer Latest revision; FALSE if none (not in HEAD)
 156         */
 157         function fetch_node($node)
 158         {
 159                 $node = $this->fetch_node_string($node);
 160                 if (!isset($this->memcache['nodes']["$node"]))
 161                 {
 162                         $result = $this->registry->db->query_first("SELECT * FROM {$this->hash}_nodes WHERE name = '" . $this->registry->escape($node) . "'");
 163                         if ($result == false)
 164                         {
 165                                 return false;
 166                         }
 167
 168                         $this->memcache['nodes']["$node"] = $result;
 169                         $this->memcache['nodes']["$node"]['history'] = unserialize($this->memcache['nodes']["$node"]['history']);
 170                 }
 171
 172                 return $this->memcache['nodes']["$node"];
 173         }
 174
 175         // ###################################################################
 176         /**
 177         * Checks to see if a given node is a directory. Returns TRUE if so.
 178         *
 179         * @access       public
 180         *
 181         * @param        string  Node path
 182         *
 183         * @return       bool    TRUE if directory, FALSE if not
 184         */
 185         function isdir($node)
 186         {
 187                 $node = $this->fetch_node($node);
 188                 if ($node['node'] == 'dir')
 189                 {
 190                         return true;
 191                 }
 192
 193                 return false;
 194         }
 195
 196         // ###################################################################
 197         /**
 198         * Checks to see if it's necessary to rebuild the cacheV table for the
 199         * current repository. This is done by making sure $count > 0. If not,
 200         * then rebuild() is run. This also checks against the cacheV table
 201         * to make sure that it's up-to-date against the root repository.
 202         *
 203         * @access       public
 204         */
 205         function exec_build()
 206         {
 207                 $result = $this->registry->db->query_first("SELECT MAX(revision) AS max FROM {$this->hash}_revs");
 208                 $this->count = $result['max'];
 209
 210                 // time to go from the start
 211                 if ($this->count == 0)
 212                 {
 213                         $this->build(null);
 214                 }
 215                 else
 216                 {
 217                         // send an Xquery to SVN to see if we need to update
 218                         $query = $this->registry->svn->svn('info --xml ' . $this->registry->repos->fetch_path($this->registry->paths->repos));
 219                         $query = implode("\n", $query);
 220
 221                         $tree = $this->registry->xml->parse($query);
 222
 223                         if ($tree['info']['entry']['revision'] != $this->count)
 224                         {
 225                                 $this->build($this->count);
 226                         }
 227                 }
 228         }
 229
 230         // ###################################################################
 231         /**
 232         * Builds the cacheV table. This can be used to build only part of the
 233         * cache or the entire thing, if the revision is set to NULL.
 234         *
 235         * @access       public
 236         *
 237         * @param        integer Lower (current) revision
 238         */
 239         function build($revision)
 240         {
 241                 $start = microtime();
 242
 243                 // get _revs
 244                 $output = $this->registry->svn->svn('log --xml -v ' . ($revision !== null ? '-r' . $revision . ':HEAD ' : '') . $this->registry->repos->fetch_path($this->registry->paths->repos));
 245                 $output = implode("\n", $output);
 246                 $tree = $this->registry->xml->parse($output);
 247
 248                 // get _nodes
 249                 $output = $this->registry->svn->svn('info --xml -R ' . ($revision !== null ? '-r' . $revision . ':HEAD ' : '') . $this->registry->repos->fetch_path($this->registry->paths->repos));
 250                 $output = implode("\n", $output);
 251                 $infolist = $this->registry->xml->parse($output);
 252
 253                 // other part of _nodes: properties
 254                 $output = $this->registry->svn->svn('proplist -v -R ' . ($revision !== null ? ' -r' . $revision . ':HEAD ' : '') . $this->registry->repos->fetch_path($this->registry->paths->repos));
 255                 $index = null;
 256                 foreach ($output AS $line)
 257                 {
 258                         if (preg_match('#^Properties on \'(.*?)\':$#', $line, $bits))
 259                         {
 260                                 $proplist["$index"]["$curprop"] = trim($proplist["$index"]["$curprop"]);
 261                                 $index = str_replace($this->registry->repos->fetch_path($this->registry->paths->repos), '', $bits[1]);
 262                                 $capture = false;
 263                         }
 264                         else
 265                         {
 266                                 if (preg_match('#^\s+(.*)\s:\s(.*)#', $line, $matches))
 267                                 {
 268                                         $curprop = $matches[1];
 269                                         $proplist["$index"]["$curprop"] = $matches[2] . "\n";
 270                                         $capture = true;
 271                                 }
 272                                 else if ($capture == true)
 273                                 {
 274                                         $proplist["$index"]["$curprop"] .= $line . "\n";
 275                                 }
 276                         }
 277                 }
 278
 279                 // construct _revs inserts and the list of add revisions
 280                 foreach ($tree['log']['logentry'] AS $log)
 281                 {
 282                         $this->registry->xml->unify_node($log['paths']['path']);
 283
 284                         $inserts['revs'][] = "($log[revision], '{$log['author']['value']}', '{$log['date']['value']}', '" . $this->registry->escape($log['msg']['value']) . "', '" . $this->registry->escape(serialize($log['paths']['path'])) . "')";
 285
 286                         foreach ($log['paths']['path'] AS $path)
 287                         {
 288                                 if (trim($path['action']) == 'A')
 289                                 {
 290                                         $path['value'] = preg_replace('#^/#', '', $path['value']);
 291                                         $addlist["$path[value]"] = $log['revision'];
 292                                 }
 293                         }
 294                 }
 295
 296                 // construct list of HEAD nodes for _nodes
 297                 foreach ($infolist['info']['entry'] AS $node)
 298                 {
 299                         $history = $this->registry->svn->svn('log --xml ' . $node['url']['value']);
 300                         $history = implode("\n", $history);
 301                         $history = $this->registry->xml->parse($history);
 302
 303                         $loglist = array();
 304                         $latestrev = -1;
 305                         foreach ($history['log']['logentry'] AS $log)
 306                         {
 307                                 $latestrev = ($log['revision'] > $latestrev ? $log['revision'] : $latestrev);
 308                                 $loglist["$log[revision]"] = array(
 309                                         'revision'      => $log['revision'],
 310                                         'author'        => $log['author']['value'],
 311                                         'date'          => $log['date']['value'],
 312                                         'message'       => $log['msg']['value']
 313                                 );
 314                         }
 315
 316                         $inserts['nodes'][] = "('$node[path]', '" . $node['kind'] . "', $latestrev, '" . $this->registry->escape(serialize($loglist)) . "', '" . $this->registry->escape(serialize($proplist["$node[path]"])) . "')";
 317                 }
 318
 319                 // insert _revs
 320                 $this->registry->db->query("
 321                         REPLACE INTO {$this->hash}_revs
 322                                 (revision, author, dateline, message, files)
 323                         VALUES
 324                                 " . implode(",\n", $inserts['revs'])
 325                 );
 326
 327                 // insert _nodes
 328                 $this->registry->db->query("
 329                         REPLACE INTO {$this->hash}_nodes
 330                                 (name, node, revision, history, properties)
 331                         VALUES
 332                                 " . implode(",\n", $inserts['nodes'])
 333                 );
 334
 335                 $this->registry->debug("TIME TO (RE)BUILD: " . $this->registry->funct->fetch_microtime_diff($start));
 336         }
 337 }
 338
 339 /*=====================================================================*\
 340 || ###################################################################
 341 || # $HeadURL$
 342 || # $Id$
 343 || ###################################################################
 344 \*=====================================================================*/
 345 ?>