Complex classes like LiipMonitorExtension often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use LiipMonitorExtension, and based on these observations, apply Extract Interface, too.
1 | <?php |
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26 | class LiipMonitorExtension extends Extension implements CompilerPassInterface |
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27 | { |
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28 | /** |
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29 | * Tuple (migrationsConfiguration, tempConfiguration) for doctrine migrations check |
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30 | * |
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31 | * @var array |
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32 | */ |
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33 | private $migrationConfigurationsServices = []; |
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34 | |||
35 | /** |
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36 | * Connection object needed for correct migration loading |
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37 | * |
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38 | * @var Connection |
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39 | */ |
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40 | private $fakeConnection; |
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41 | |||
42 | public function __construct() |
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43 | { |
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44 | if (class_exists(Connection::class)) { |
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45 | $this->fakeConnection = new Connection([], new Driver()); |
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46 | } |
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47 | } |
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48 | |||
49 | /** |
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50 | * Loads the services based on your application configuration. |
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51 | * |
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52 | * @param array $configs |
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53 | * @param ContainerBuilder $container |
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54 | */ |
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55 | public function load(array $configs, ContainerBuilder $container) |
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56 | { |
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57 | $loader = new Loader\XmlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config')); |
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58 | $loader->load('runner.xml'); |
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59 | $loader->load('helper.xml'); |
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60 | $loader->load('commands.xml'); |
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61 | |||
62 | $configuration = new Configuration(); |
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63 | $config = $this->processConfiguration($configuration, $configs); |
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64 | |||
65 | if (null === $config['view_template']) { |
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66 | $config['view_template'] = __DIR__.'/../Resources/views/health/index.html.php'; |
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67 | } |
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68 | |||
69 | if ($config['enable_controller']) { |
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70 | $container->setParameter(sprintf('%s.view_template', $this->getAlias()), $config['view_template']); |
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71 | $container->setParameter(sprintf('%s.failure_status_code', $this->getAlias()), $config['failure_status_code']); |
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72 | $loader->load('controller.xml'); |
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73 | } |
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74 | |||
75 | $this->configureMailer($container, $loader, $config); |
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76 | |||
77 | $container->setParameter(sprintf('%s.default_group', $this->getAlias()), $config['default_group']); |
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78 | |||
79 | // symfony3 does not define templating.helper.assets unless php templating is included |
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80 | if ($container->has('templating.helper.assets')) { |
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81 | $pathHelper = $container->getDefinition('liip_monitor.helper'); |
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82 | $pathHelper->replaceArgument(0, 'templating.helper.assets'); |
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83 | } |
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84 | |||
85 | // symfony3 does not define templating.helper.router unless php templating is included |
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86 | if ($container->has('templating.helper.router')) { |
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87 | $pathHelper = $container->getDefinition('liip_monitor.helper'); |
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88 | $pathHelper->replaceArgument(1, 'templating.helper.router'); |
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89 | } |
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90 | |||
91 | if (empty($config['checks'])) { |
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92 | return; |
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93 | } |
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94 | |||
95 | $checksLoaded = array(); |
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96 | $containerParams = array(); |
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97 | foreach ($config['checks']['groups'] as $group => $checks) { |
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98 | if (empty($checks)) { |
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99 | continue; |
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100 | } |
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101 | |||
102 | foreach ($checks as $check => $values) { |
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103 | if (empty($values)) { |
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104 | continue; |
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105 | } |
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106 | |||
107 | $containerParams['groups'][$group][$check] = $values; |
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108 | $this->setParameters($container, $check, $group, $values); |
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109 | |||
110 | if (!in_array($check, $checksLoaded)) { |
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111 | $loader->load('checks/'.$check.'.xml'); |
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112 | $checksLoaded[] = $check; |
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113 | } |
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114 | } |
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115 | } |
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116 | |||
117 | $container->setParameter(sprintf('%s.checks', $this->getAlias()), $containerParams); |
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118 | $this->configureDoctrineMigrationsCheck($container, $containerParams); |
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119 | } |
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120 | |||
121 | /** |
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122 | * @inheritDoc |
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123 | */ |
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124 | public function process(ContainerBuilder $container) |
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136 | |||
137 | /** |
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138 | * @param ContainerBuilder $container |
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139 | * @param string $checkName |
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140 | * @param string $group |
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141 | * @param array $values |
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142 | */ |
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143 | private function setParameters(ContainerBuilder $container, $checkName, $group, $values) |
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208 | |||
209 | /** |
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210 | * Set up doctrine migration configuration services |
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211 | * |
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212 | * @param ContainerBuilder $container The container |
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213 | * @param array $params Container params |
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214 | * |
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215 | * @return void |
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216 | */ |
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217 | private function configureDoctrineMigrationsCheck(ContainerBuilder $container, array $params) |
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256 | |||
257 | private function configureMailer(ContainerBuilder $container, LoaderInterface $loader, array $config) |
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258 | { |
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276 | |||
277 | /** |
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278 | * Return key-value array with migration version as key and class as a value defined in config file |
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279 | * |
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280 | * @param ContainerBuilder $container The container |
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281 | * @param DoctrineMigrationConfiguration $config Current configuration |
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282 | * @param Connection $connection Fake connections |
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283 | * |
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284 | * @return array[] |
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285 | */ |
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286 | private function getPredefinedMigrations(ContainerBuilder $container, DoctrineMigrationConfiguration $config, Connection $connection) |
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313 | |||
314 | /** |
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315 | * Creates migration configuration service definition |
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316 | * |
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317 | * @param ContainerBuilder $container DI Container |
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318 | * @param string $connectionName Connection name for container service |
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319 | * @param string $filename File name with migration configuration |
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320 | * |
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321 | * @return DefinitionDecorator|ChildDefinition |
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322 | */ |
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323 | private function createMigrationConfigurationService(ContainerBuilder $container, string $connectionName, string $filename = null) |
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396 | |||
397 | /** |
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398 | * Creates in-memory migration configuration for setting up container service |
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399 | * |
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400 | * @param ContainerBuilder $container The container |
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401 | * @param Connection $connection Fake connection |
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402 | * @param string $filename Migrations configuration file |
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403 | * |
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404 | * @return DoctrineMigrationConfiguration |
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405 | */ |
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406 | private function createTemporaryConfiguration( |
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445 | } |
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446 |
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)
or! empty(...)
instead.