Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like FOSElasticaExtension 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 FOSElasticaExtension, and based on these observations, apply Extract Interface, too.
1 | <?php |
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28 | class FOSElasticaExtension extends Extension |
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29 | { |
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30 | /** |
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31 | * Definition of elastica clients as configured by this extension. |
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32 | * |
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33 | * @var array |
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34 | */ |
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35 | private $clients = []; |
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36 | |||
37 | /** |
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38 | * An array of indexes as configured by the extension. |
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39 | * |
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40 | * @var array |
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41 | */ |
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42 | private $indexConfigs = []; |
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43 | |||
44 | /** |
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45 | * An array of index templates as configured by the extension. |
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46 | * |
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47 | * @var array |
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48 | */ |
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49 | private $indexTemplateConfigs = []; |
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50 | |||
51 | /** |
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52 | * If we've encountered a type mapped to a specific persistence driver, it will be loaded |
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53 | * here. |
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54 | * |
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55 | * @var array |
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56 | */ |
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57 | private $loadedDrivers = []; |
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58 | |||
59 | 21 | public function load(array $configs, ContainerBuilder $container) |
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60 | { |
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61 | 21 | $configuration = $this->getConfiguration($configs, $container); |
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62 | 21 | $config = $this->processConfiguration($configuration, $configs); |
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63 | |||
64 | 21 | $loader = new XmlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config')); |
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65 | |||
66 | 21 | if (empty($config['clients']) || empty($config['indexes'])) { |
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67 | // No Clients or indexes are defined |
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68 | return; |
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69 | } |
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70 | |||
71 | 21 | foreach (['config', 'index', 'persister', 'provider', 'source', 'transformer', 'event_listener', 'commands'] as $basename) { |
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72 | 21 | $loader->load(sprintf('%s.xml', $basename)); |
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73 | } |
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74 | |||
75 | 21 | if (empty($config['default_client'])) { |
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76 | 21 | $keys = array_keys($config['clients']); |
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77 | 21 | $config['default_client'] = reset($keys); |
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78 | } |
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79 | |||
80 | 21 | if (empty($config['default_index'])) { |
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81 | 21 | $keys = array_keys($config['indexes']); |
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82 | 21 | $config['default_index'] = reset($keys); |
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83 | } |
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84 | |||
85 | 21 | if ($this->isConfigEnabled($container, $config['messenger'])) { |
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86 | $this->registerMessengerConfiguration($config['messenger'], $container, $loader); |
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87 | } |
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88 | |||
89 | 21 | if (isset($config['serializer'])) { |
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90 | 1 | $loader->load('serializer.xml'); |
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91 | |||
92 | 1 | $this->loadSerializer($config['serializer'], $container); |
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93 | } |
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94 | |||
95 | 21 | $this->loadClients($config['clients'], $container); |
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96 | 21 | $container->setAlias('fos_elastica.client', sprintf('fos_elastica.client.%s', $config['default_client'])); |
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97 | 21 | $container->getAlias('fos_elastica.client')->setPublic(true); |
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98 | 21 | $container->setAlias(ElasticaClient::class, new Alias('fos_elastica.client', false)); |
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99 | 21 | $container->setAlias(Client::class, 'fos_elastica.client'); |
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100 | 21 | $container->getAlias(Client::class)->setPublic(false); |
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101 | |||
102 | 21 | $this->loadIndexes($config['indexes'], $container); |
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103 | 21 | $container->setAlias('fos_elastica.index', sprintf('fos_elastica.index.%s', $config['default_index'])); |
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104 | 21 | $container->getAlias('fos_elastica.index')->setPublic(true); |
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105 | 21 | $container->setParameter('fos_elastica.default_index', $config['default_index']); |
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106 | |||
107 | 21 | if ($usedIndexNames = \array_intersect_key($config['indexes'], $config['index_templates'])) { |
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108 | throw new \DomainException(\sprintf('Index names "%s" are already in use and can not be used for index templates names', \implode('","', \array_keys($usedIndexNames)))); |
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109 | } |
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110 | 21 | $this->loadIndexTemplates($config['index_templates'], $container); |
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111 | |||
112 | 21 | $container->getDefinition('fos_elastica.config_source.container')->replaceArgument(0, $this->indexConfigs); |
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113 | $container |
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114 | 21 | ->getDefinition('fos_elastica.config_source.template_container') |
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115 | 21 | ->replaceArgument(0, $this->indexTemplateConfigs); |
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116 | |||
117 | 21 | $this->loadIndexManager($container); |
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118 | 21 | $this->loadIndexTemplateManager($container); |
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119 | |||
120 | 21 | $this->createDefaultManagerAlias($config['default_manager'], $container); |
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121 | 21 | } |
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122 | |||
123 | /** |
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124 | * @return Configuration |
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125 | */ |
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126 | 21 | public function getConfiguration(array $config, ContainerBuilder $container) |
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127 | { |
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128 | 21 | return new Configuration($container->getParameter('kernel.debug')); |
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129 | } |
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130 | |||
131 | /** |
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132 | * Loads the configured clients. |
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133 | * |
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134 | * @param array $clients An array of clients configurations |
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135 | * @param ContainerBuilder $container A ContainerBuilder instance |
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136 | * |
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137 | * @return array |
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138 | */ |
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139 | 21 | private function loadClients(array $clients, ContainerBuilder $container) |
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140 | { |
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141 | 21 | foreach ($clients as $name => $clientConfig) { |
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142 | 21 | $clientId = sprintf('fos_elastica.client.%s', $name); |
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143 | |||
144 | 21 | $clientDef = new ChildDefinition('fos_elastica.client_prototype'); |
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145 | 21 | $clientDef->replaceArgument(0, $clientConfig); |
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146 | 21 | $clientDef->replaceArgument(1, null); |
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147 | |||
148 | 21 | $logger = $clientConfig['connections'][0]['logger']; |
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149 | 21 | if (false !== $logger) { |
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150 | 21 | $clientDef->addMethodCall('setLogger', [new Reference($logger)]); |
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151 | } |
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152 | |||
153 | 21 | $clientDef->addTag('fos_elastica.client'); |
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154 | |||
155 | 21 | $container->setDefinition($clientId, $clientDef); |
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156 | |||
157 | 21 | $this->clients[$name] = [ |
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158 | 21 | 'id' => $clientId, |
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159 | 21 | 'reference' => new Reference($clientId), |
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160 | ]; |
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161 | } |
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162 | 21 | } |
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163 | |||
164 | /** |
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165 | * Loads the configured indexes. |
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166 | * |
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167 | * @param array $indexes An array of indexes configurations |
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168 | * @param ContainerBuilder $container A ContainerBuilder instance |
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169 | * |
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170 | * @throws \InvalidArgumentException |
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171 | * |
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172 | * @return array |
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173 | */ |
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174 | 21 | private function loadIndexes(array $indexes, ContainerBuilder $container) |
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175 | { |
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176 | 21 | $indexableCallbacks = []; |
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177 | |||
178 | 21 | foreach ($indexes as $name => $index) { |
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179 | 21 | $indexId = sprintf('fos_elastica.index.%s', $name); |
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180 | 21 | $indexName = $index['index_name'] ?? $name; |
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181 | |||
182 | 21 | $indexDef = new ChildDefinition('fos_elastica.index_prototype'); |
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183 | 21 | $indexDef->setFactory([new Reference('fos_elastica.client'), 'getIndex']); |
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184 | 21 | $indexDef->replaceArgument(0, $indexName); |
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185 | 21 | $indexDef->addTag('fos_elastica.index', [ |
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186 | 21 | 'name' => $name, |
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187 | ]); |
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188 | |||
189 | 21 | View Code Duplication | if (isset($index['client'])) { |
190 | 1 | $client = $this->getClient($index['client']); |
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191 | |||
192 | 1 | $indexDef->setFactory([$client, 'getIndex']); |
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193 | } |
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194 | |||
195 | 21 | $container->setDefinition($indexId, $indexDef); |
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196 | 21 | $reference = new Reference($indexId); |
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197 | |||
198 | 21 | $this->indexConfigs[$name] = [ |
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199 | 21 | 'elasticsearch_name' => $indexName, |
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200 | 21 | 'reference' => $reference, |
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201 | 21 | 'model' => $index['persistence']['model'] ?? null, |
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202 | 21 | 'name' => $name, |
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203 | 21 | 'settings' => $index['settings'], |
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204 | 21 | 'index_prototype' => $index['index_prototype'] ?? [], |
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205 | 21 | 'use_alias' => $index['use_alias'], |
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206 | ]; |
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207 | |||
208 | 21 | if ($index['finder']) { |
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209 | $this->loadIndexFinder($container, $name, $reference); |
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210 | } |
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211 | |||
212 | 21 | $this->loadIndexConfig((array) $index, $this->indexConfigs[$name]); |
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213 | |||
214 | 21 | if (isset($index['indexable_callback'])) { |
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215 | 4 | $indexableCallbacks[$name] = $this->buildCallback($index['indexable_callback'], $name); |
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216 | } |
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217 | |||
218 | 21 | $this->loadIndexSerializerIntegration($index['serializer'] ?? [], $container, $reference); |
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219 | |||
220 | 21 | if (isset($index['persistence'])) { |
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221 | 15 | $this->loadIndexPersistenceIntegration($index['persistence'], $container, $reference, $name); |
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222 | } |
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223 | } |
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224 | |||
225 | 21 | $indexable = $container->getDefinition('fos_elastica.indexable'); |
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226 | 21 | $indexable->replaceArgument(0, $indexableCallbacks); |
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227 | 21 | } |
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228 | |||
229 | /** |
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230 | * Loads the configured indexes. |
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231 | * |
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232 | * @param array $indexTemplates An array of indexes configurations |
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233 | * @param ContainerBuilder $container A ContainerBuilder instance |
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234 | * |
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235 | * @throws \InvalidArgumentException |
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236 | * |
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237 | * @return void |
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238 | */ |
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239 | 21 | private function loadIndexTemplates(array $indexTemplates, ContainerBuilder $container) |
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240 | { |
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241 | 21 | foreach ($indexTemplates as $name => $indexTemplate) { |
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242 | 6 | $indexId = sprintf('fos_elastica.index_template.%s', $name); |
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243 | 6 | $indexTemplateName = $indexTemplate['template_name'] ?? $name; |
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244 | |||
245 | 6 | $indexDef = new ChildDefinition('fos_elastica.index_template_prototype'); |
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246 | 6 | $indexDef->setFactory([new Reference('fos_elastica.client'), 'getIndexTemplate']); |
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247 | 6 | $indexDef->replaceArgument(0, $indexTemplateName); |
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248 | 6 | $indexDef->addTag('fos_elastica.index_template', [ |
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249 | 6 | 'name' => $name, |
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250 | ]); |
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251 | |||
252 | 6 | View Code Duplication | if (isset($indexTemplate['client'])) { |
253 | 6 | $client = $this->getClient($indexTemplate['client']); |
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254 | 6 | $indexDef->setFactory([$client, 'getIndexTemplate']); |
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255 | } |
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256 | |||
257 | 6 | $container->setDefinition($indexId, $indexDef); |
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258 | 6 | $reference = new Reference($indexId); |
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259 | |||
260 | 6 | $this->indexTemplateConfigs[$name] = [ |
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261 | 6 | 'elasticsearch_name' => $indexTemplateName, |
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262 | 6 | 'reference' => $reference, |
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263 | 6 | 'name' => $name, |
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264 | 6 | 'settings' => $indexTemplate['settings'], |
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265 | 6 | 'template' => $indexTemplate['template'], |
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266 | ]; |
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267 | |||
268 | 6 | $this->loadIndexConfig((array) $indexTemplate, $this->indexTemplateConfigs[$name]); |
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269 | } |
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270 | 21 | } |
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271 | |||
272 | /** |
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273 | * Loads the configured index finders. |
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274 | * |
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275 | * @param string $name The index name |
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276 | * @param Reference $index Reference to the related index |
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277 | * |
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278 | * @return string |
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279 | */ |
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280 | private function loadIndexFinder(ContainerBuilder $container, string $name, Reference $index): void |
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289 | |||
290 | /** |
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291 | * Loads the configured $index. |
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292 | */ |
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293 | 21 | private function loadIndexConfig(array $index, array &$indexConfig): void |
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294 | { |
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323 | |||
324 | 4 | private function buildCallback($indexCallback, $indexName) |
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349 | |||
350 | 4 | private function transformServiceReference($classOrService) |
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354 | |||
355 | 21 | private function loadIndexSerializerIntegration(array $config, ContainerBuilder $container, Reference $indexRef): void |
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376 | |||
377 | /** |
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378 | * Loads the optional provider and finder for a type. |
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379 | */ |
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380 | 15 | private function loadIndexPersistenceIntegration(array $config, ContainerBuilder $container, Reference $indexRef, string $indexName): void |
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400 | |||
401 | /** |
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402 | * Creates and loads an ElasticaToModelTransformer. |
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403 | */ |
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404 | 15 | private function loadElasticaToModelTransformer(array $persistenceConfig, ContainerBuilder $container, string $indexName): string |
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426 | |||
427 | /** |
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428 | * Creates and loads a ModelToElasticaTransformer for an index. |
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429 | */ |
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430 | 15 | private function loadModelToElasticaTransformer(array $config, ContainerBuilder $container, string $indexName): string |
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450 | |||
451 | /** |
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452 | * Creates and loads an object persister for a index. |
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453 | */ |
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454 | 15 | private function loadObjectPersister(array $config, Reference $indexRef, ContainerBuilder $container, string $indexName, string $transformerId): string |
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491 | |||
492 | /** |
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493 | * Loads a pager provider for a index. |
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494 | */ |
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495 | 15 | private function loadIndexPagerProvider(array $indexConfig, ContainerBuilder $container, string $indexName): string |
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528 | |||
529 | /** |
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530 | * Loads doctrine listeners to handle indexing of new or updated objects. |
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531 | */ |
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532 | 14 | private function loadIndexListener(array $indexConfig, ContainerBuilder $container, string $objectPersisterId, string $indexName): string |
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592 | |||
593 | /** |
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594 | * Map Elastica to Doctrine events for the current driver. |
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595 | */ |
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596 | 14 | private function getDoctrineEvents(array $indexConfig) |
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628 | |||
629 | /** |
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630 | * Loads a Type specific Finder. |
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631 | */ |
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632 | 15 | private function loadTypeFinder(array $typeConfig, ContainerBuilder $container, string $elasticaToModelId, Reference $indexRef, string $indexName): string |
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658 | |||
659 | /** |
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660 | * Loads the index manager. |
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661 | **/ |
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662 | 21 | View Code Duplication | private function loadIndexManager(ContainerBuilder $container): void |
671 | |||
672 | /** |
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673 | * Load index template manager. |
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674 | */ |
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675 | 21 | View Code Duplication | private function loadIndexTemplateManager(ContainerBuilder $container): void |
684 | |||
685 | /** |
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686 | * Makes sure a specific driver has been loaded. |
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687 | */ |
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688 | 15 | private function loadDriver(ContainerBuilder $container, string $driver): void |
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698 | |||
699 | /** |
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700 | * Loads and configures the serializer prototype. |
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701 | */ |
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702 | 1 | private function loadSerializer(array $config, ContainerBuilder $container): void |
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713 | |||
714 | /** |
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715 | * Creates a default manager alias for defined default manager or the first loaded driver. |
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716 | */ |
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717 | 21 | private function createDefaultManagerAlias(string $defaultManager, ContainerBuilder $container): void |
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734 | |||
735 | /** |
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736 | * Returns a reference to a client given its configured name. |
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737 | * |
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738 | * @throws \InvalidArgumentException |
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739 | */ |
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740 | 7 | private function getClient(string $clientName): Reference |
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748 | |||
749 | private function registerMessengerConfiguration(array $config, ContainerBuilder $container, XmlFileLoader $loader): void |
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761 | } |
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762 |