Comodojo\Cache\Components\ConfigurationParser

Complexity

Total Complexity

36

Size/Duplication

Total Lines	226
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	11

Test Coverage

Coverage

85.11%

Importance

Changes

0

11 Methods

Rating	Name	Duplication	Size	Complexity
A	BuildApcProvider()	0	5	1
A	BuildFilesystemProvider()	0	5	1
A	BuildMemcachedProvider()	0	5	1
A	BuildMemoryProvider()	0	5	1
A	BuildPhpRedisProvider()	0	5	1
A	BuildVacuumProvider()	0	5	1
A	BuildApcuProvider()	0	5	1
A	parse()	0	12	1
D	parseManagerConfiguration()	0	33	9
A	getPickMode()	0	9	2
D	buildProviders()	0	114	17

<?php namespace Comodojo\Cache\Components;

use \Comodojo\Foundation\Base\Configuration;
use \Comodojo\Foundation\Validation\DataFilter;
use \Comodojo\Foundation\Utils\ArrayOps;
use \Psr\Log\LoggerInterface;
use \Comodojo\Cache\Providers\Apc as CacheApc;
use \Comodojo\Cache\Providers\Apcu as CacheApcu;
use \Comodojo\Cache\Providers\Filesystem as CacheFilesystem;
use \Comodojo\Cache\Providers\Memcached as CacheMemcached;
use \Comodojo\Cache\Providers\Memory as CacheMemory;
use \Comodojo\Cache\Providers\PhpRedis as CachePhpRedis;
use \Comodojo\Cache\Providers\Vacuum as CacheVacuum;

/**
 * @package     Comodojo Cache
 * @author      Marco Giovinazzi <marco.giovinazzi@comodojo.org>
 * @license     MIT
 *
 * LICENSE:
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

class ConfigurationParser {

    protected static $algorithms = array(
        'PICK_FIRST' => 1,
        'PICK_LAST' => 2,
        'PICK_RANDOM' => 3,
        'PICK_BYWEIGHT' => 4,
        'PICK_ALL' => 4,
        'PICK_TRAVERSE' => 6
    );

    public static function parse(Configuration $configuration, LoggerInterface $logger, $stanza = null) {

The parameter $stanza is not used and could be removed.

        list($enable, $manager) = self::parseManagerConfiguration($configuration, $logger);
        $providers = self::buildProviders($configuration, $logger);

        return [
            $enable,
            $manager,
            $providers
        ];

    }

    protected static function BuildApcProvider(LoggerInterface $logger) {

        return new CacheApc([], $logger);

    }

    protected static function BuildApcuProvider(LoggerInterface $logger) {

        return new CacheApcu([], $logger);

    }

    protected static function BuildFilesystemProvider(array $properties, LoggerInterface $logger) {

        return new CacheFilesystem($properties, $logger);

    }

    protected static function BuildMemcachedProvider(array $properties, LoggerInterface $logger) {

        return new CacheMemcached($properties, $logger);

    }

    protected static function BuildMemoryProvider(LoggerInterface $logger) {

        return new CacheMemory([], $logger);

    }

    protected static function BuildPhpRedisProvider(array $properties, LoggerInterface $logger) {

        return new CachePhpRedis($properties, $logger);

    }

    protected static function BuildVacuumProvider(LoggerInterface $logger) {

        return new CacheVacuum([], $logger);

    }

    protected static function parseManagerConfiguration(Configuration $configuration, LoggerInterface $logger, $stanza = null) {

        $cache = null;

        if ( $stanza !== null ) {
            $cache = $configuration->get($stanza);
        }

        if ( $cache === null ) {
            $cache = $configuration->get('cache');
        }

        $stdConfig = [
            'pick_mode' => null,
            'logger' => $logger,
            'align_cache' => true,
            'flap_interval' => null
        ];

        $enable = true;

        if ( $cache !== null && is_array($cache) ) {
            $lower_cache = array_change_key_case($cache, CASE_LOWER);
            if ( isset($lower_cache['logger']) ) unset($lower_cache['logger']);
            $stdConfig = array_merge($stdConfig, array_intersect_key($lower_cache, $stdConfig));
            if ( isset($lower_cache['enable']) && $lower_cache['enable'] === false ) $enable = false;
        }

        if ( $stdConfig['pick_mode'] !== null ) $stdConfig['pick_mode'] = self::getPickMode($stdConfig['pick_mode']);

        return [$enable, array_values($stdConfig)];

    }

    protected static function buildProviders(Configuration $configuration, LoggerInterface $logger) {

        $cache = $configuration->get('cache');
        $build = [];

        if ( $cache === null ) return $build;

        $lower_cache = array_change_key_case($cache, CASE_LOWER);

        if ( !isset($lower_cache['providers']) || !is_array($lower_cache['providers']) ) return $build;

        $providers = $lower_cache['providers'];

        foreach ( $providers as $name => $specs ) {

            if ( !is_array($specs) ) {
                $logger->error("Invalid specs for cache provider: $name");
                continue;
            }

            $spec = array_change_key_case($specs, CASE_LOWER);

            if ( empty($spec['type']) ) {
                $logger->error("Missing type for cache provider: $name");
                continue;
            }

            $type = strtoupper($spec['type']);

            switch ( $type ) {

                case 'APC':
                    $provider = static::BuildApcProvider($logger);
                    break;

                case 'APCU':
                    $provider = static::BuildApcuProvider($logger);
                    break;

                case 'FILESYSTEM':

The case body in a switch statement must start on the line following the statement.

                    $stdConfig = [
                        'cache_folder' => null
                    ];

                    if ( isset($spec['cache_folder']) ) {
                        if ( $spec['cache_folder'][0] == "/" ) {
                            $stdConfig['cache_folder'] = $spec['cache_folder'];
                        } else {
                            $stdConfig['cache_folder'] = $configuration->get('base-path')."/".$spec['cache_folder'];
                        }
                    }

                    $provider = static::BuildFilesystemProvider($stdConfig, $logger);

                    break;

                case 'MEMCACHED':

The case body in a switch statement must start on the line following the statement.

                    $valid_values = [
                        'server',
                        'port',
                        'weight',
                        'persistent_id',
                        'username',
                        'password'
                    ];

                    $stdConfig = ArrayOps::filterByKeys($valid_values, $spec);

                    $provider = static::BuildMemcachedProvider($stdConfig, $logger);
                    break;

                case 'MEMORY':
                    $provider = static::BuildMemoryProvider($logger);
                    break;

                case 'PHPREDIS':

The case body in a switch statement must start on the line following the statement.

                    $valid_values = [
                        'server',
                        'port',
                        'timeout',
                        'logger',
                        'password'
                    ];

                    $stdConfig = ArrayOps::filterByKeys($valid_values, $spec);

                    $provider = static::BuildPhpRedisProvider($stdConfig, $logger);
                    break;

                case 'VACUUM':
                    $provider = static::BuildVacuumProvider($logger);
                    break;

                default:
                    $logger->error("Unknown type $type for cache provider: $name");
                    continue 2;
                    break;

break; does not seem to be reachable.

            }

            $build[$name] = (object) [
                "instance" => $provider,
                "weight" => isset($spec['weight']) ?
                    DataFilter::filterInteger($spec['weight'], 0, 100, 0) : 0
            ];

        }

        return $build;

    }

    protected static function getPickMode($algorithm = null) {

        $algorithm = strtoupper($algorithm);

        if ( array_key_exists($algorithm, self::$algorithms) ) return self::$algorithms[$algorithm];

        return self::$algorithms['PICK_FIRST'];

    }

}