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<?php
/**
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
* @file
*/
declare( strict_types=1 );
namespace Wikimedia\Stats;
use Wikimedia\Stats\Emitters\EmitterInterface;
use Wikimedia\Stats\Emitters\NullEmitter;
use Wikimedia\Stats\Emitters\UDPEmitter;
use Wikimedia\Stats\Exceptions\UnsupportedFormatException;
use Wikimedia\Stats\Formatters\DogStatsdFormatter;
use Wikimedia\Stats\Formatters\FormatterInterface;
use Wikimedia\Stats\Formatters\NullFormatter;
use Wikimedia\Stats\Formatters\StatsdFormatter;
/**
* Metrics Format and Output Helpers
*
* @author Cole White
* @since 1.41
*/
class OutputFormats {
public const NULL = 1;
public const STATSD = 2;
public const DOGSTATSD = 3;
private const SUPPORTED_FORMATS = [
'null' => self::NULL,
'statsd' => self::STATSD,
'dogstatsd' => self::DOGSTATSD
];
/**
* Convert friendly format name to integer.
*
* @param string $format
* @return int
*/
public static function getFormatFromString( string $format ): int {
if ( self::SUPPORTED_FORMATS[$format] ?? false ) {
return self::SUPPORTED_FORMATS[$format];
}
throw new UnsupportedFormatException(
"Format '" . $format . "' not supported. Expected one of "
. json_encode( array_keys( self::SUPPORTED_FORMATS ) )
);
}
/**
* Returns an instance of the requested formatter.
*
* @param int $format
* @return FormatterInterface
*/
public static function getNewFormatter( int $format ): FormatterInterface {
switch ( $format ) {
case self::DOGSTATSD:
return new DogStatsdFormatter();
case self::STATSD:
return new StatsdFormatter();
case self::NULL:
return new NullFormatter();
default:
throw new UnsupportedFormatException( 'Unsupported metrics format. Got format: ' . $format );
}
}
/**
* Returns an emitter instance appropriate the formatter instance.
*
* @param string $prefix
* @param StatsCache $cache
* @param FormatterInterface $formatter
* @param string|null $target
* @return EmitterInterface
*/
public static function getNewEmitter(
string $prefix,
StatsCache $cache,
FormatterInterface $formatter,
?string $target = null
): EmitterInterface {
switch ( get_class( $formatter ) ) {
case StatsdFormatter::class:
case DogStatsdFormatter::class:
return new UDPEmitter( $prefix, $cache, $formatter, $target );
case NullFormatter::class:
return new NullEmitter;
default:
throw new UnsupportedFormatException(
'Unsupported metrics format. Got format: ' . get_class( $formatter )
);
}
}
}