1<?php
2
3/*
4 * This file is part of Mustache.php.
5 *
6 * (c) 2010-2017 Justin Hileman
7 *
8 * For the full copyright and license information, please view the LICENSE
9 * file that was distributed with this source code.
10 */
11
12/**
13 * Abstract Mustache Cache class.
14 *
15 * Provides logging support to child implementations.
16 *
17 * @abstract
18 */
19abstract class Mustache_Cache_AbstractCache implements Mustache_Cache
20{
21    private $logger = null;
22
23    /**
24     * Get the current logger instance.
25     *
26     * @return Mustache_Logger|Psr\Log\LoggerInterface
27     */
28    public function getLogger()
29    {
30        return $this->logger;
31    }
32
33    /**
34     * Set a logger instance.
35     *
36     * @param Mustache_Logger|Psr\Log\LoggerInterface $logger
37     */
38    public function setLogger($logger = null)
39    {
40        if ($logger !== null && !($logger instanceof Mustache_Logger || is_a($logger, 'Psr\\Log\\LoggerInterface'))) {
41            throw new Mustache_Exception_InvalidArgumentException('Expected an instance of Mustache_Logger or Psr\\Log\\LoggerInterface.');
42        }
43
44        $this->logger = $logger;
45    }
46
47    /**
48     * Add a log record if logging is enabled.
49     *
50     * @param int    $level   The logging level
51     * @param string $message The log message
52     * @param array  $context The log context
53     */
54    protected function log($level, $message, array $context = array())
55    {
56        if (isset($this->logger)) {
57            $this->logger->log($level, $message, $context);
58        }
59    }
60}
61