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<?php
/**
* @copyright Copyright 2012-2013 Rackspace US, Inc.
See COPYING for licensing information.
* @license https://www.apache.org/licenses/LICENSE-2.0 Apache 2.0
* @version 1.5.9
* @author Jamie Hannaford <jamie.hannaford@rackspace.com>
*/
namespace OpenCloud\Common\Log;
use OpenCloud\Common\Exceptions\LoggingException;
/**
* Basic logger for OpenCloud which extends FIG's PSR-3 standard logger.
*
* @link https://github.com/php-fig/log
*/
class Logger extends AbstractLogger
{
/**
* Is this debug class enabled or not?
*
* @var bool
*/
private $enabled = false;
/**
* These are the levels which will always be outputted - regardless of
* user-imposed settings.
*
* @var array
*/
private $urgentLevels = array(
LogLevel::EMERGENCY,
LogLevel::ALERT,
LogLevel::CRITICAL
);
/**
* Logging options.
*
* @var array
*/
private $options = array(
'outputToFile' => false,
'logFile' => null,
'dateFormat' => 'd/m/y H:I',
'delimeter' => ' - '
);
/**
* Determines whether a log level needs to be outputted.
*
* @param string $logLevel
* @return bool
*/
private function outputIsUrgent($logLevel)
{
return in_array($logLevel, $this->urgentLevels);
}
/**
* Interpolates context values into the message placeholders.
*
* @param string $message
* @param array $context
* @return type
*/
private function interpolate($message, array $context = array())
{
// build a replacement array with braces around the context keys
$replace = array();
foreach ($context as $key => $val) {
$replace['{' . $key . '}'] = $val;
}
// interpolate replacement values into the message and return
return strtr($message, $replace);
}
/**
* Enable or disable the debug class.
*
* @param bool $enabled
* @return self
*/
public function setEnabled($enabled)
{
$this->enabled = $enabled;
return $this;
}
/**
* Is the debug class enabled?
*
* @return bool
*/
public function getEnabled()
{
return $this->enabled;
}
/**
* Set an array of options.
*
* @param array $options
*/
public function setOptions(array $options = array())
{
foreach ($options as $key => $value) {
$this->setOption($key, $value);
}
}
/**
* Get all options.
*
* @return array
*/
public function getOptions()
{
return $this->options;
}
/**
* Set an individual option.
*
* @param string $key
* @param string $value
*/
public function setOption($key, $value)
{
if ($this->optionExists($key)) {
$this->options[$key] = $value;
}
}
/**
* Get an individual option.
*
* @param string $key
* @return string|null
*/
public function getOption($key)
{
if ($this->optionExists($key)) {
return $this->options[$key];
}
}
/**
* Check whether an individual option exists.
*
* @param string $key
* @return bool
*/
private function optionExists($key)
{
return array_key_exists($key, $this->getOptions());
}
/**
* Outputs a log message if necessary.
*
* @param string $logLevel
* @param string $message
* @param string $context
*/
public function log($level, $message, array $context = array())
{
if ($this->outputIsUrgent($level)
|| $this->getEnabled() === true
|| RAXSDK_DEBUG === true
) {
$this->dispatch($message, $context);
}
}
/**
* Used to format the line outputted in the log file.
*
* @param string $string
* @return string
*/
private function formatFileLine($string)
{
$format = $this->getOption('dateFormat') . $this->getOption('delimeter');
return date($format) . $string;
}
/**
* Dispatch a log output message.
*
* @param string $message
* @param array $context
* @throws LoggingException
*/
private function dispatch($message, $context)
{
$output = $this->interpolate($message, $context) . PHP_EOL;
if ($this->getOption('outputToFile') === true) {
$file = $this->getOption('logFile');
if (!is_writable($file)) {
throw new LoggingException(
'The log file either does not exist or is not writeable'
);
}
// Output to file
file_put_contents($file, $this->formatFileLine($output));
} else {
echo $output;
}
}
}
|
