pjordaan /
apie
| Total Complexity | 62 |
| Total Lines | 379 |
| Duplicated Lines | 0 % |
| Changes | 1 | ||
| Bugs | 0 | Features | 1 |
Complex classes like OpenApiSchemaGenerator 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.
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 OpenApiSchemaGenerator, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 18 | class OpenApiSchemaGenerator |
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| 19 | { |
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| 20 | private const MAX_RECURSION = 2; |
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| 21 | |||
| 22 | /** |
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| 23 | * @var DynamicSchemaInterface[] |
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| 24 | */ |
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| 25 | private $schemaGenerators; |
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| 26 | |||
| 27 | /** |
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| 28 | * @var Schema[] |
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| 29 | */ |
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| 30 | private $predefined = []; |
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| 31 | |||
| 32 | /** |
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| 33 | * @var bool[] |
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| 34 | */ |
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| 35 | private $building = []; |
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| 36 | /** |
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| 37 | * @var ObjectAccessInterface |
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| 38 | */ |
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| 39 | private $objectAccess; |
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| 40 | |||
| 41 | /** |
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| 42 | * @var NameConverterInterface |
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| 43 | */ |
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| 44 | private $nameConverter; |
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| 45 | |||
| 46 | /** |
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| 47 | * @var ClassMetadataFactoryInterface |
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| 48 | */ |
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| 49 | private $classMetadataFactory; |
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| 50 | |||
| 51 | /** |
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| 52 | * @var Schema[] |
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| 53 | */ |
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| 54 | protected $alreadyDefined = []; |
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| 55 | |||
| 56 | /** |
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| 57 | * @var int |
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| 58 | */ |
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| 59 | protected $oldRecursion = -1; |
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| 60 | |||
| 61 | /** |
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| 62 | * @param DynamicSchemaInterface[] $schemaGenerators |
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| 63 | * @param ObjectAccessInterface $objectAccess |
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| 64 | * @param ClassMetadataFactoryInterface $classMetadataFactory |
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| 65 | * @param NameConverterInterface $nameConverter |
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| 66 | */ |
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| 67 | public function __construct( |
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| 68 | array $schemaGenerators, |
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| 69 | ObjectAccessInterface $objectAccess, |
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| 70 | ClassMetadataFactoryInterface $classMetadataFactory, |
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| 71 | NameConverterInterface $nameConverter |
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| 72 | ) { |
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| 73 | $this->schemaGenerators = $schemaGenerators; |
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| 74 | $this->objectAccess = $objectAccess; |
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| 75 | $this->nameConverter = $nameConverter; |
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| 76 | $this->classMetadataFactory = $classMetadataFactory; |
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| 77 | } |
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| 78 | |||
| 79 | /** |
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| 80 | * Define a resource class and Schema manually. |
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| 81 | * @param string $resourceClass |
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| 82 | * @param Schema $schema |
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| 83 | * @return OpenApiSchemaGenerator |
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| 84 | */ |
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| 85 | public function defineSchemaForResource(string $resourceClass, Schema $schema) |
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| 86 | { |
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| 87 | $this->predefined[$resourceClass] = $schema; |
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| 88 | $this->alreadyDefined = []; |
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| 89 | |||
| 90 | return $this; |
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| 91 | } |
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| 92 | |||
| 93 | /** |
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| 94 | * Creates a Schema for specific resource class. |
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| 95 | * |
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| 96 | * @param string $resourceClass |
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| 97 | * @param string $operation |
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| 98 | * @param array $groups |
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| 99 | * @return Schema |
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| 100 | */ |
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| 101 | public function createSchema(string $resourceClass, string $operation, array $groups): Schema |
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| 102 | { |
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| 103 | return unserialize(serialize($this->createSchemaRecursive($resourceClass, $operation, $groups, $this->oldRecursion + 1))); |
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| 104 | } |
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| 105 | |||
| 106 | /** |
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| 107 | * Creates a unique cache key to be used for already defined schemas for performance reasons. |
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| 108 | * |
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| 109 | * @param string $resourceClass |
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| 110 | * @param string $operation |
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| 111 | * @param string[] $groups |
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| 112 | * @return string |
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| 113 | */ |
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| 114 | private function getCacheKey(string $resourceClass, string $operation, array $groups) |
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| 115 | { |
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| 116 | return $resourceClass . ',' . $operation . ',' . implode(', ', $groups); |
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| 117 | } |
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| 118 | |||
| 119 | /** |
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| 120 | * Iterate over a list of callbacks to see if they provide a schema for this resource class. |
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| 121 | * |
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| 122 | * @param string $cacheKey |
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| 123 | * @param string $resourceClass |
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| 124 | * @param string $operation |
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| 125 | * @param array $groups |
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| 126 | * @param int $recursion |
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| 127 | * |
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| 128 | * @return Schema|null |
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| 129 | */ |
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| 130 | private function runCallbacks(string $cacheKey, string $resourceClass, string $operation, array $groups, int $recursion): ?Schema |
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| 131 | { |
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| 132 | if (!empty($this->building[$cacheKey])) { |
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| 133 | return null; |
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| 134 | } |
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| 135 | $this->building[$cacheKey] = true; |
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| 136 | $oldValue = $this->oldRecursion; |
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| 137 | try { |
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| 138 | // specifically defined: just call it. |
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| 139 | if (isset($this->schemaGenerators[$resourceClass])) { |
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| 140 | return $this->schemaGenerators[$resourceClass]($resourceClass, $operation, $groups, $recursion, $this); |
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| 141 | } |
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| 142 | foreach ($this->schemaGenerators as $classDeclaration => $callable) { |
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| 143 | if (is_a($resourceClass, $classDeclaration, true)) { |
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| 144 | $res = $callable($resourceClass, $operation, $groups, $recursion, $this); |
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| 145 | if ($res instanceof Schema) { |
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| 146 | return $res; |
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| 147 | } |
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| 148 | } |
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| 149 | } |
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| 150 | return null; |
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| 151 | } finally { |
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| 152 | $this->oldRecursion = $oldValue; |
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| 153 | unset($this->building[$cacheKey]); |
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| 154 | } |
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| 155 | } |
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| 156 | |||
| 157 | private function createSchemaRecursive(string $resourceClass, string $operation, array $groups, int $recursion = 0): Schema |
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| 158 | { |
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| 159 | $cacheKey = $this->getCacheKey($resourceClass, $operation, $groups) . ',' . $recursion; |
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| 160 | if (isset($this->alreadyDefined[$cacheKey])) { |
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| 161 | return $this->alreadyDefined[$cacheKey]; |
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| 162 | } |
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| 163 | |||
| 164 | foreach ($this->predefined as $className => $schema) { |
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| 165 | if (is_a($resourceClass, $className, true)) { |
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| 166 | $this->alreadyDefined[$cacheKey] = $schema; |
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| 167 | |||
| 168 | return $this->alreadyDefined[$cacheKey]; |
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| 169 | } |
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| 170 | } |
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| 171 | |||
| 172 | if ($predefinedSchema = $this->runCallbacks($cacheKey, $resourceClass, $operation, $groups, $recursion)) { |
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| 173 | return $this->alreadyDefined[$cacheKey] = $predefinedSchema; |
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| 174 | } |
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| 175 | $refl = new ReflectionClass($resourceClass); |
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| 176 | $schema = SchemaFactory::createObjectSchemaWithoutProperties($refl, $operation, $groups); |
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| 177 | |||
| 178 | // if definition is an interface or abstract base class it is possible that it has additional properties. |
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| 179 | if ($refl->isAbstract() || $refl->isInterface()) { |
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| 180 | $schema->additionalProperties = true; |
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| 181 | } |
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| 182 | if ($recursion > self::MAX_RECURSION) { |
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| 183 | $schema->properties = null; |
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| 184 | $schema->additionalProperties = true; |
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| 185 | return $this->alreadyDefined[$cacheKey] = $schema; |
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| 186 | } |
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| 187 | $objectAccess = $this->filterObjectAccess($this->objectAccess, $resourceClass, $groups); |
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| 188 | switch ($operation) { |
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| 189 | case 'post': |
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| 190 | $constructorArgs = $objectAccess->getConstructorArguments($refl); |
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| 191 | foreach ($constructorArgs as $key => $type) { |
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| 192 | /** @scrutinizer ignore-call */ |
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| 193 | $fieldName = $this->nameConverter->normalize($key, $resourceClass); |
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| 194 | $schema->properties[$fieldName] = $this->convertTypeToSchema($type, $operation, $groups, $recursion); |
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| 195 | $description = $objectAccess->getDescription($refl, $key, false); |
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| 196 | if ($description) { |
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| 197 | $schema->properties[$fieldName]->description = $description; |
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| 198 | } |
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| 199 | } |
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| 200 | // FALLTHROUGH |
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| 201 | case 'put': |
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| 202 | $setterFields = $objectAccess->getSetterFields($refl); |
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| 203 | foreach ($setterFields as $setterField) { |
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| 204 | /** @scrutinizer ignore-call */ |
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| 205 | $fieldName = $this->nameConverter->normalize($setterField, $resourceClass); |
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| 206 | $schema->properties[$fieldName] = $this->convertTypesToSchema($objectAccess->getSetterTypes($refl, $setterField), $operation, $groups, $recursion); |
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| 207 | $description = $objectAccess->getDescription($refl, $setterField, false); |
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| 208 | if ($description) { |
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| 209 | $schema->properties[$fieldName]->description = $description; |
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| 210 | } |
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| 211 | } |
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| 212 | break; |
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| 213 | case 'get': |
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| 214 | $getterFields = $objectAccess->getGetterFields($refl); |
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| 215 | foreach ($getterFields as $getterField) { |
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| 216 | /** @scrutinizer ignore-call */ |
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| 217 | $fieldName = $this->nameConverter->normalize($getterField, $resourceClass); |
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| 218 | $schema->properties[$fieldName] = $this->convertTypesToSchema($objectAccess->getGetterTypes($refl, $getterField), $operation, $groups, $recursion); |
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| 219 | $description = $objectAccess->getDescription($refl, $getterField, true); |
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| 220 | if ($description) { |
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| 221 | $schema->properties[$fieldName]->description = $description; |
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| 222 | } |
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| 223 | } |
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| 224 | break; |
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| 225 | } |
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| 226 | if (is_array($schema->properties) && empty($schema->properties)) { |
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| 227 | $schema->properties = null; |
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| 228 | } |
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| 229 | return $this->alreadyDefined[$cacheKey] = $schema; |
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| 230 | } |
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| 231 | |||
| 232 | private function filterObjectAccess(ObjectAccessInterface $objectAccess, string $className, array $groups): ObjectAccessInterface |
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| 243 | } |
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| 244 | |||
| 245 | private function convertTypesToSchema(array $types, string $operation, array $groups, int $recursion = 0): Schema |
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| 246 | { |
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| 247 | if (empty($types)) { |
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| 248 | return SchemaFactory::createAnyTypeSchema(); |
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| 249 | } |
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| 250 | $type = reset($types); |
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| 251 | // this is only because this serializer does not do a deep populate. |
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| 252 | if ($operation === 'put') { |
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| 253 | $operation = 'post'; |
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| 254 | } |
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| 255 | return $this->convertTypeToSchema($type, $operation, $groups, $recursion); |
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| 256 | } |
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| 257 | |||
| 258 | /** |
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| 259 | * Returns OpenApi property type for scalars. |
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| 260 | * |
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| 261 | * @param string $type |
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| 262 | * @return string |
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| 263 | */ |
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| 264 | private function translateType(string $type): string |
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| 274 | } |
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| 275 | |||
| 276 | /** |
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| 277 | * Convert Type into Schema. |
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| 278 | * |
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| 279 | * @param Type $type |
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| 280 | * @param string $operation |
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| 281 | * @param string[] $groups |
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| 282 | * @param int $recursion |
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| 283 | * @internal |
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| 284 | * |
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| 285 | * @return Schema |
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| 286 | */ |
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| 287 | public function convertTypeToSchema(?Type $type, string $operation, array $groups, int $recursion): Schema |
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| 351 | } |
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| 352 | |||
| 353 | /** |
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| 354 | * Define an OpenAPI discriminator spec for an interface or base class that have a discriminator column. |
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| 355 | * |
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| 356 | * @param string $resourceInterface |
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| 357 | * @param string $discriminatorColumn |
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| 358 | * @param array $subclasses |
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| 359 | * @param string $operation |
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| 360 | * @param string[] $groups |
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| 361 | * @return Schema |
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| 362 | */ |
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| 363 | public function defineSchemaForPolymorphicObject( |
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| 397 | } |
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| 398 | } |
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| 399 |
