Add abstract storage layer

3 files changed, 227 insertions, 0 deletions

diff --git a/app/Core/ObjectStorage/FileStorage.php b/app/Core/ObjectStorage/FileStorage.php
new file mode 100644
index 00000000..66c62334
--- /dev/null
+++ b/app/Core/ObjectStorage/FileStorage.php
@@ -0,0 +1,150 @@
+<?php
+
+namespace Core\ObjectStorage;
+
+/**
+ * Local File Storage
+ *
+ * @package  ObjectStorage
+ * @author   Frederic Guillot
+ */
+class FileStorage implements ObjectStorageInterface
+{
+    /**
+     * Base path
+     *
+     * @access private
+     * @var string
+     */
+    private $path = '';
+
+    /**
+     * Constructor
+     *
+     * @access public
+     * @param  string  $path
+     */
+    public function __construct($path)
+    {
+        $this->path = $path;
+    }
+
+    /**
+     * Fetch object contents
+     *
+     * @access public
+     * @param  string  $key
+     * @return string
+     */
+    public function get($key)
+    {
+        $filename = $this->path.DIRECTORY_SEPARATOR.$key;
+
+        if (! file_exists($filename)) {
+            throw new ObjectStorageException('File not found: '.$filename);
+        }
+
+        return file_get_contents($filename);
+    }
+
+    /**
+     * Save object
+     *
+     * @access public
+     * @param  string  $key
+     * @param  string  $blob
+     * @return string
+     */
+    public function put($key, &$blob)
+    {
+        $this->createFolder($key);
+
+        if (file_put_contents($this->path.DIRECTORY_SEPARATOR.$key, $blob) === false) {
+            throw new ObjectStorageException('Unable to write the file: '.$this->path.DIRECTORY_SEPARATOR.$key);
+        }
+    }
+
+    /**
+     * Output directly object content
+     *
+     * @access public
+     * @param  string  $key
+     */
+    public function passthru($key)
+    {
+        $filename = $this->path.DIRECTORY_SEPARATOR.$key;
+
+        if (! file_exists($filename)) {
+            throw new ObjectStorageException('File not found: '.$filename);
+        }
+
+        return readfile($filename);
+    }
+
+    /**
+     * Move local file to object storage
+     *
+     * @access public
+     * @param  string  $filename
+     * @param  string  $key
+     * @return boolean
+     */
+    public function moveFile($src_filename, $key)
+    {
+        $this->createFolder($key);
+        $dst_filename = $this->path.DIRECTORY_SEPARATOR.$key;
+
+        if (! rename($src_filename, $dst_filename)) {
+            throw new ObjectStorageException('Unable to move the file: '.$src_filename.' to '.$dst_filename);
+        }
+
+        return true;
+    }
+
+    /**
+     * Move uploaded file to object storage
+     *
+     * @access public
+     * @param  string  $filename
+     * @param  string  $key
+     * @return boolean
+     */
+    public function moveUploadedFile($filename, $key)
+    {
+        $this->createFolder($key);
+        return move_uploaded_file($filename, $this->path.DIRECTORY_SEPARATOR.$key);
+    }
+
+    /**
+     * Remove object
+     *
+     * @access public
+     * @param  string  $key
+     * @return boolean
+     */
+    public function remove($key)
+    {
+        $filename = $this->path.DIRECTORY_SEPARATOR.$key;
+
+        if (file_exists($filename)) {
+            return unlink($filename);
+        }
+
+        return false;
+    }
+
+    /**
+     * Create object folder
+     *
+     * @access private
+     * @param  string  $key
+     */
+    private function createFolder($key)
+    {
+        $folder = $this->path.DIRECTORY_SEPARATOR.dirname($key);
+
+        if (! is_dir($folder) && ! mkdir($folder, 0755, true)) {
+            throw new ObjectStorageException('Unable to create folder: '.$folder);
+        }
+    }
+}
diff --git a/app/Core/ObjectStorage/ObjectStorageException.php b/app/Core/ObjectStorage/ObjectStorageException.php
new file mode 100644
index 00000000..e89aeb25
--- /dev/null
+++ b/app/Core/ObjectStorage/ObjectStorageException.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace Core\ObjectStorage;
+
+use Exception;
+
+class ObjectStorageException extends Exception
+{
+}
diff --git a/app/Core/ObjectStorage/ObjectStorageInterface.php b/app/Core/ObjectStorage/ObjectStorageInterface.php
new file mode 100644
index 00000000..5440cf2b
--- /dev/null
+++ b/app/Core/ObjectStorage/ObjectStorageInterface.php
@@ -0,0 +1,68 @@
+<?php
+
+namespace Core\ObjectStorage;
+
+/**
+ * Object Storage Interface
+ *
+ * @package  ObjectStorage
+ * @author   Frederic Guillot
+ */
+interface ObjectStorageInterface
+{
+    /**
+     * Fetch object contents
+     *
+     * @access public
+     * @param  string  $key
+     * @return string
+     */
+    public function get($key);
+
+    /**
+     * Save object
+     *
+     * @access public
+     * @param  string  $key
+     * @param  string  $blob
+     * @return string
+     */
+    public function put($key, &$blob);
+
+    /**
+     * Output directly object content
+     *
+     * @access public
+     * @param  string  $key
+     */
+    public function passthru($key);
+
+    /**
+     * Move local file to object storage
+     *
+     * @access public
+     * @param  string  $filename
+     * @param  string  $key
+     * @return boolean
+     */
+    public function moveFile($filename, $key);
+
+    /**
+     * Move uploaded file to object storage
+     *
+     * @access public
+     * @param  string  $filename
+     * @param  string  $key
+     * @return boolean
+     */
+    public function moveUploadedFile($filename, $key);
+
+    /**
+     * Remove object
+     *
+     * @access public
+     * @param  string  $key
+     * @return boolean
+     */
+    public function remove($key);
+}