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1<?php
2
3/**
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; under version 2
7 * of the License (non-upgradable).
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
17 *
18 * Copyright (c) 2016 (original work) Open Assessment Technologies SA
19 *
20 */
21
22use Psr\Log\LogLevel;
23use Psr\Log\AbstractLogger;
24
25/**
26 * A wrapper for the old Logger
27 *
28 * @access public
29 * @author Joel Bout, <joel.bout@tudor.lu>
30 * @package generis
31 */
32class common_log_Logger2Psr extends AbstractLogger
33{
34    /**
35     * A map between the loggers
36     * @var array
37     */
38    private static $map = [
39        LogLevel::EMERGENCY => common_Logger::FATAL_LEVEL,
40        LogLevel::ALERT => common_Logger::FATAL_LEVEL,
41        LogLevel::CRITICAL => common_Logger::ERROR_LEVEL,
42        LogLevel::ERROR => common_Logger::ERROR_LEVEL,
43        LogLevel::WARNING => common_Logger::WARNING_LEVEL,
44        LogLevel::INFO => common_Logger::INFO_LEVEL,
45        LogLevel::NOTICE => common_Logger::DEBUG_LEVEL,
46        LogLevel::DEBUG => common_Logger::DEBUG_LEVEL,
47    ];
48
49    /**
50     * @var array   The common_logger level - PSR3 log level conversion.
51     */
52    private static $reverseMap = [
53        common_Logger::TRACE_LEVEL   => LogLevel::DEBUG,
54        't'                          => LogLevel::DEBUG,
55
56        common_Logger::DEBUG_LEVEL   => LogLevel::DEBUG,
57        'd'                          => LogLevel::DEBUG,
58
59        common_Logger::INFO_LEVEL    => LogLevel::INFO,
60        'i'                          => LogLevel::INFO,
61
62        common_Logger::WARNING_LEVEL => LogLevel::WARNING,
63        'w'                          => LogLevel::WARNING,
64
65        common_Logger::ERROR_LEVEL   => LogLevel::ERROR,
66        'e'                          => LogLevel::ERROR,
67
68        common_Logger::FATAL_LEVEL   => LogLevel::CRITICAL,
69        'f'                          => LogLevel::CRITICAL,
70    ];
71
72    /**
73     * @var common_Logger
74     */
75    private $logger;
76
77    public function __construct(common_Logger $logger)
78    {
79        $this->logger = $logger;
80    }
81
82    /**
83     * (non-PHPdoc)
84     * @see \Psr\Log\LoggerInterface::log()
85     */
86    public function log($level, $message, array $context = [])
87    {
88        $errorLevel = isset(self::$map[$level]) ? self::$map[$level] : common_Logger::ERROR_LEVEL;
89        $this->logger->log($errorLevel, $message, $context);
90    }
91
92    public static function getCommonFromPsrLevel($level)
93    {
94        if (empty(self::$map[$level])) {
95            throw new Exception('Invalid error level in Common level to PSR conversion: ' . $level);
96        }
97
98        return self::$map[$level];
99    }
100
101    /**
102     * Returns the PSR log level based on the common log level.
103     *
104     * @param string $level
105     *
106     * @return string   The PSR log level.
107     *
108     * @throws Exception   When invalid level was presented.
109     */
110    public static function getPsrLevelFromCommon($level)
111    {
112        if (empty(self::$reverseMap[$level])) {
113            throw new Exception('Invalid error level in PSR to Common level conversion: ' . $level);
114        }
115
116        return self::$reverseMap[$level];
117    }
118}