Added a DB backend for the Git blob info.

2009-04-21 17:45:35 +02:00
parent 86da0c0eed
commit aab8720cac
4 changed files with 243 additions and 30 deletions
--- a/src/IDF/Scm/Cache/Git.php
+++ b/src/IDF/Scm/Cache/Git.php
@@ -0,0 +1,133 @@
+<?php
+/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+# ***** BEGIN LICENSE BLOCK *****
+# This file is part of InDefero, an open source project management application.
+# Copyright (C) 2008 Céondo Ltd and contributors.
+#
+# InDefero is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# InDefero is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#
+# ***** END LICENSE BLOCK ***** */
+
+/**
+ * This class implements the cache storage for the Git commits.
+ *
+ * The storage is simple. Each commit is linked to a project to drop
+ * the cache when the project is dropped. The key is the commit hash
+ * and the data is the date, author and one line title of information.
+ *
+ * A clean interface is available to bulk set/get a series of commit
+ * info with the minimum of SQL queries. The goal is to be fast.
+ */
+class IDF_Scm_Cache_Git extends Pluf_Model
+{
+    public $_model = __CLASS__;
+
+    /**
+     * The current project to limit the search to.
+     */
+    public $_project = null;
+
+    /**
+     * Store in the cache blob infos.
+     *
+     * The info is an array of stdClasses, with hash, date, title and
+     * author properties.
+     *
+     * @param array Blob infos
+     */
+    public function store($infos)
+    {
+        foreach ($infos as $blob) {
+            $cache = new IDF_Scm_Cache_Git();
+            $cache->project = $this->_project;
+            $cache->githash = $blob->hash;
+            $cache->content = $blob->date.chr(31).$blob->author.chr(31).$blob->title;
+            $sql = new Pluf_SQL('project=%s AND githash=%s',
+                                array($this->_project->id, $blob->hash));
+            if (0 == Pluf::factory(__CLASS__)->getCount(array('filter' => $sql->gen()))) {
+                $cache->create();
+            }
+        }
+    }
+
+    /**
+     * Get for the given hashes the corresponding date, title and
+     * author.
+     *
+     * It returns an hash indexed array with the info. If an hash is
+     * not in the db, the key is not set.
+     *
+     * Note that the hashes must always come from internal tools.
+     *
+     * @param array Hashes to get info
+     * @return array Blob infos
+     */
+    public function retrieve($hashes)
+    {
+        $res = array();
+        $db = $this->getDbConnection();
+        $hashes = array_map(array($db, 'esc'), $hashes);
+        $sql = new Pluf_SQL('project=%s AND githash IN ('.implode(', ', $hashes).')', 
+                            array($this->_project->id));
+        foreach (Pluf::factory(__CLASS__)->getList(array('filter' => $sql->gen())) as $blob) {
+            $tmp = split(chr(31), $blob->content, 3);
+
+            $res[$blob->githash] = (object) array(
+                                                  'hash' => $blob->githash,
+                                                  'date' => $tmp[0],
+                                                  'title' => $tmp[2],
+                                                  'author' => $tmp[1],
+                                                  );
+        }
+        return $res;
+    }
+
+    /**
+     * The storage is composed of 4 columns, id, project, hash and the
+     * raw data.
+     */
+    function init()
+    {
+        $this->_a['table'] = 'idf_scm_cache_git';
+        $this->_a['model'] = __CLASS__;
+        $this->_a['cols'] = array(
+                             // It is mandatory to have an "id" column.
+                            'id' =>
+                            array(
+                                  'type' => 'Pluf_DB_Field_Sequence',
+                                  'blank' => true, 
+                                  ),
+                            'project' => 
+                            array(
+                                  'type' => 'Pluf_DB_Field_Foreignkey',
+                                  'model' => 'IDF_Project',
+                                  'blank' => false,
+                                  ),
+                            'githash' =>
+                            array(
+                                  'type' => 'Pluf_DB_Field_Varchar',
+                                  'blank' => false,
+                                  'size' => 40,
+                                  'index' => true,
+                                  ),
+                            'content' =>
+                            array(
+                                  'type' => 'Pluf_DB_Field_Text',
+                                  'blank' => false,
+                                  ),
+                            );
+    }
+}