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1<?php declare(strict_types=1);
2/**
3 * Banker
4 *
5 * A Caching library implementing psr/cache (PSR 6) and psr/simple-cache (PSR 16)
6 *
7 * PHP version 8+
8 *
9 * @package     Banker
10 * @author      Timothy J. Warren <tim@timshomepage.net>
11 * @copyright   2016 - 2023  Timothy J. Warren
12 * @license     http://www.opensource.org/licenses/mit-license.html  MIT License
13 * @version     4.1.0
14 * @link        https://git.timshomepage.net/timw4mail/banker
15 */
16namespace Aviat\Banker;
17
18use Psr\Log\{
19    LoggerAwareTrait,
20    LoggerInterface,
21    LogLevel,
22    NullLogger
23};
24
25/**
26 * Trait for keeping track of logger objects
27 */
28trait LoggerTrait {
29
30    use LoggerAwareTrait;
31
32    /**
33     * Return the existing logger instance or
34     * a NullLogger, if no instance set
35     */
36    protected function getLogger(): LoggerInterface
37    {
38        if ($this->logger === NULL)
39        {
40            $this->logger = new NullLogger();
41        }
42        return $this->logger;
43    }
44
45    /**
46     * Set a logger to keep track of errors
47     */
48    public function setLogger(LoggerInterface $logger): void
49    {
50        $this->logger = $logger;
51
52        // Set the logger for the current driver too
53        if (isset($this->driver))
54        {
55            $this->driver->setLogger($logger);
56        }
57    }
58}