<?php
/**
* LoggerAggregatorTrait file
*
* Copyright (c) 2016, Kiril Savchev
* All rights reserved.
*
* @category Libs
* @package Logger
*
* @author Kiril Savchev <k.savchev@gmail.com>
*
* @license https://opensource.org/licenses/BSD-3-Clause BSD 3 License
* @link http://ifthenelse.info
*/
namespace Ite\Logger;
use Psr\Log\LoggerInterface;
/**
* Trait for aggregating loggers
*
* This trait can be used for common logger aggregator functionalities
* if you want to use custom class that cannot extends LoggerAggregator.
*
* @uses psr\log
*
* @ver 1.0
*
* @author Kiril Savchev <k.savchev@gmail>
*/
trait LoggerAggregatorTrait {
/**
* Aggregated loggers map
*
* The keys of this array are log levels with arrays of
* Psr\Log\LoggerInterface object ot be used when
* LoggerAggreagete::log($level) is called
*
* @var array
*/
protected $loggers = [];
/**
* Add logger to specific level
*
* If level parameter is ommited than it will attached to all levels.
* If level is array, then the logger will be attached to all of its
* values as a level. Previously attached loggers to the same level
* will be ignored.
*
* @param LoggerInterface $logger
* @param mixed $level [Optional] Level the logger is attached to. Default NULL - to all levels
*/
public function attachLogger(LoggerInterface $logger, $level = '*') {
if (is_array($level)) {
foreach ($level as $value) {
$this->attachLogger($logger, $value);
}
}
else {
if (!array_key_exists($level, $this->loggers) || !is_array($this->loggers[$level])) {
$this->loggers[$level] = [];
}
if (in_array($logger, $this->loggers[$level])) {
return true;
}
$this->loggers[$level][] = $logger;
}
}
/**
* Remove logger.
*
* You can specify a level that the logger will be remove from. If
* ommitted than the logger will be entirely removed from all levels.
*
* @param LoggerInterface $logger
* @param string $level [Optional] The level the logger be removed from. Default null
*/
public function detachLogger(LoggerInterface $logger, $level = null) {
foreach ($this->loggers as $lvl => $loggers) {
if ($level && $level !== $lvl) {
continue;
}
if (in_array($logger, $loggers)) {
$key = array_search($logger, $loggers);
unset($this->loggers[$lvl][$key]);
}
}
}
/**
* Attach a set of loggers in ['level' => $logger] format
*
* @param array $loggers
*/
public function setLoggers(array $loggers) {
foreach ($loggers as $level => $logger) {
$this->attachLogger($logger, $level);
}
return $this;
}
/**
* Get the aggregated loggers
*
* @return array
*/
public function getLoggers() {
return $this->loggers;
}
}
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