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+<?php
+/**
+ * This program 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.
+ *
+ * This program 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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+
+namespace MediaWiki\Logger;
+
+/**
+ * Service provider interface for \Psr\Log\LoggerInterface implementation
+ * libraries.
+ *
+ * MediaWiki can be configured to use a class implementing this interface to
+ * create new \Psr\Log\LoggerInterface instances via either the
+ * $wgMWLoggerDefaultSpi global variable or code that constructs an instance
+ * and registers it via the LoggerFactory::registerProvider() static method.
+ *
+ * @see \MediaWiki\Logger\LoggerFactory
+ * @since 1.25
+ * @author Bryan Davis <bd808@wikimedia.org>
+ * @copyright © 2014 Bryan Davis and Wikimedia Foundation.
+ */
+interface Spi {
+
+	/**
+	 * Get a logger instance.
+	 *
+	 * @param string $channel Logging channel
+	 * @return \Psr\Log\LoggerInterface Logger instance
+	 */
+	public function getLogger( $channel );
+
+}