pjordaan /
apie
| Total Complexity | 62 |
| Total Lines | 387 |
| 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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| 17 | class OpenApiSchemaGenerator |
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| 18 | { |
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| 19 | private const MAX_RECURSION = 2; |
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| 20 | |||
| 21 | /** |
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| 22 | * @var DynamicSchemaInterface[] |
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| 23 | */ |
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| 24 | private $schemaGenerators; |
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| 25 | |||
| 26 | /** |
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| 27 | * @var Schema[] |
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| 28 | */ |
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| 29 | private $predefined = []; |
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| 30 | |||
| 31 | /** |
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| 32 | * @var bool[] |
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| 33 | */ |
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| 34 | private $building = []; |
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| 35 | /** |
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| 36 | * @var ObjectAccessInterface |
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| 37 | */ |
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| 38 | private $objectAccess; |
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| 39 | |||
| 40 | /** |
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| 41 | * @var NameConverterInterface |
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| 42 | */ |
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| 43 | private $nameConverter; |
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| 44 | |||
| 45 | /** |
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| 46 | * @var ClassMetadataFactoryInterface |
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| 47 | */ |
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| 48 | private $classMetadataFactory; |
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| 49 | |||
| 50 | /** |
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| 51 | * @var Schema[] |
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| 52 | */ |
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| 53 | protected $alreadyDefined = []; |
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| 54 | |||
| 55 | /** |
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| 56 | * @var int |
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| 57 | */ |
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| 58 | protected $oldRecursion = -1; |
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| 59 | |||
| 60 | /** |
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| 61 | * @param DynamicSchemaInterface[] $schemaGenerators |
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| 62 | * @param ObjectAccessInterface $objectAccess |
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| 63 | * @param ClassMetadataFactoryInterface $classMetadataFactory |
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| 64 | * @param NameConverterInterface $nameConverter |
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| 65 | */ |
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| 66 | public function __construct( |
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| 67 | array $schemaGenerators, |
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| 68 | ObjectAccessInterface $objectAccess, |
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| 69 | ClassMetadataFactoryInterface $classMetadataFactory, |
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| 70 | NameConverterInterface $nameConverter |
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| 71 | ) { |
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| 72 | $this->schemaGenerators = $schemaGenerators; |
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| 73 | $this->objectAccess = $objectAccess; |
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| 74 | $this->nameConverter = $nameConverter; |
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| 75 | $this->classMetadataFactory = $classMetadataFactory; |
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| 76 | } |
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| 77 | |||
| 78 | /** |
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| 79 | * Define a resource class and Schema manually. |
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| 80 | * @param string $resourceClass |
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| 81 | * @param Schema $schema |
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| 82 | * @return OpenApiSchemaGenerator |
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| 83 | */ |
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| 84 | public function defineSchemaForResource(string $resourceClass, Schema $schema) |
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| 85 | { |
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| 86 | $this->predefined[$resourceClass] = $schema; |
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| 87 | $this->alreadyDefined = []; |
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| 88 | |||
| 89 | return $this; |
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| 90 | } |
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| 91 | |||
| 92 | /** |
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| 93 | * Creates a Schema for specific resource class. |
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| 94 | * |
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| 95 | * @param string $resourceClass |
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| 96 | * @param string $operation |
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| 97 | * @param array $groups |
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| 98 | * @return Schema |
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| 99 | */ |
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| 100 | public function createSchema(string $resourceClass, string $operation, array $groups): Schema |
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| 101 | { |
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| 102 | return unserialize(serialize($this->createSchemaRecursive($resourceClass, $operation, $groups, $this->oldRecursion + 1))); |
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| 103 | } |
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| 104 | |||
| 105 | /** |
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| 106 | * Creates a unique cache key to be used for already defined schemas for performance reasons. |
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| 107 | * |
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| 108 | * @param string $resourceClass |
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| 109 | * @param string $operation |
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| 110 | * @param string[] $groups |
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| 111 | * @return string |
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| 112 | */ |
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| 113 | private function getCacheKey(string $resourceClass, string $operation, array $groups) |
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| 114 | { |
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| 115 | return $resourceClass . ',' . $operation . ',' . implode(', ', $groups); |
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| 116 | } |
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| 117 | |||
| 118 | /** |
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| 119 | * Iterate over a list of callbacks to see if they provide a schema for this resource class. |
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| 120 | * |
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| 121 | * @param string $cacheKey |
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| 122 | * @param string $resourceClass |
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| 123 | * @param string $operation |
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| 124 | * @param array $groups |
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| 125 | * @param int $recursion |
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| 126 | * |
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| 127 | * @return Schema|null |
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| 128 | */ |
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| 129 | private function runCallbacks(string $cacheKey, string $resourceClass, string $operation, array $groups, int $recursion): ?Schema |
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| 130 | { |
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| 131 | if (!empty($this->building[$cacheKey])) { |
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| 132 | return null; |
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| 133 | } |
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| 134 | $this->building[$cacheKey] = true; |
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| 135 | $oldValue = $this->oldRecursion; |
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| 136 | try { |
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| 137 | // specifically defined: just call it. |
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| 138 | if (isset($this->schemaGenerators[$resourceClass])) { |
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| 139 | return $this->schemaGenerators[$resourceClass]($resourceClass, $operation, $groups, $recursion, $this); |
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| 140 | } |
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| 141 | foreach ($this->schemaGenerators as $classDeclaration => $callable) { |
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| 142 | if (is_a($resourceClass, $classDeclaration, true)) { |
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| 143 | $res = $callable($resourceClass, $operation, $groups, $recursion, $this); |
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| 144 | if ($res instanceof Schema) { |
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| 145 | return $res; |
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| 146 | } |
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| 147 | } |
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| 148 | } |
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| 149 | return null; |
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| 150 | } finally { |
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| 151 | $this->oldRecursion = $oldValue; |
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| 152 | unset($this->building[$cacheKey]); |
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| 153 | } |
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| 154 | } |
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| 155 | |||
| 156 | private function createSchemaRecursive(string $resourceClass, string $operation, array $groups, int $recursion = 0): Schema |
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| 157 | { |
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| 158 | $cacheKey = $this->getCacheKey($resourceClass, $operation, $groups) . ',' . $recursion; |
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| 159 | if (isset($this->alreadyDefined[$cacheKey])) { |
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| 160 | return $this->alreadyDefined[$cacheKey]; |
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| 161 | } |
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| 162 | |||
| 163 | foreach ($this->predefined as $className => $schema) { |
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| 164 | if (is_a($resourceClass, $className, true)) { |
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| 165 | $this->alreadyDefined[$cacheKey] = $schema; |
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| 166 | |||
| 167 | return $this->alreadyDefined[$cacheKey]; |
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| 168 | } |
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| 169 | } |
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| 170 | |||
| 171 | if ($predefinedSchema = $this->runCallbacks($cacheKey, $resourceClass, $operation, $groups, $recursion)) { |
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| 172 | return $this->alreadyDefined[$cacheKey] = $predefinedSchema; |
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| 173 | } |
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| 174 | $refl = new ReflectionClass($resourceClass); |
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| 175 | $schema = new Schema([ |
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| 176 | 'type' => 'object', |
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| 177 | 'properties' => [], |
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| 178 | 'title' => $refl->getShortName(), |
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| 179 | 'description' => $refl->getShortName() . ' ' . $operation . ' for groups ' . implode(', ', $groups), |
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| 180 | ]); |
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| 181 | // if definition is an interface or abstract base class it is possible that it has additional properties. |
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| 182 | if ($refl->isAbstract() || $refl->isInterface()) { |
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| 183 | $schema->additionalProperties = true; |
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| 184 | } |
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| 185 | if ($recursion > self::MAX_RECURSION) { |
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| 186 | $schema->properties = null; |
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| 187 | $schema->additionalProperties = true; |
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| 188 | return $this->alreadyDefined[$cacheKey] = $schema; |
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| 189 | } |
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| 190 | $objectAccess = $this->filterObjectAccess($this->objectAccess, $resourceClass, $groups); |
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| 191 | switch ($operation) { |
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| 192 | case 'post': |
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| 193 | $constructorArgs = $objectAccess->getConstructorArguments($refl); |
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| 194 | foreach ($constructorArgs as $key => $type) { |
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| 195 | /** @scrutinizer ignore-call */ |
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| 196 | $fieldName = $this->nameConverter->normalize($key, $resourceClass); |
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| 197 | $schema->properties[$fieldName] = $this->convertTypeToSchema($type, $operation, $groups, $recursion); |
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| 198 | $description = $objectAccess->getDescription($refl, $key, false); |
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| 199 | if ($description) { |
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| 200 | $schema->properties[$fieldName]->description = $description; |
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| 201 | } |
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| 202 | } |
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| 203 | // FALLTHROUGH |
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| 204 | case 'put': |
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| 205 | $setterFields = $objectAccess->getSetterFields($refl); |
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| 206 | foreach ($setterFields as $setterField) { |
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| 207 | /** @scrutinizer ignore-call */ |
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| 208 | $fieldName = $this->nameConverter->normalize($setterField, $resourceClass); |
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| 209 | $schema->properties[$fieldName] = $this->convertTypesToSchema($objectAccess->getSetterTypes($refl, $setterField), $operation, $groups, $recursion); |
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| 210 | $description = $objectAccess->getDescription($refl, $setterField, false); |
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| 211 | if ($description) { |
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| 212 | $schema->properties[$fieldName]->description = $description; |
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| 213 | } |
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| 214 | } |
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| 215 | break; |
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| 216 | case 'get': |
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| 217 | $getterFields = $objectAccess->getGetterFields($refl); |
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| 218 | foreach ($getterFields as $getterField) { |
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| 219 | /** @scrutinizer ignore-call */ |
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| 220 | $fieldName = $this->nameConverter->normalize($getterField, $resourceClass); |
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| 221 | $schema->properties[$fieldName] = $this->convertTypesToSchema($objectAccess->getGetterTypes($refl, $getterField), $operation, $groups, $recursion); |
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| 222 | $description = $objectAccess->getDescription($refl, $getterField, true); |
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| 223 | if ($description) { |
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| 224 | $schema->properties[$fieldName]->description = $description; |
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| 225 | } |
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| 226 | } |
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| 227 | break; |
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| 228 | } |
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| 229 | if (is_array($schema->properties) && empty($schema->properties)) { |
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| 230 | $schema->properties = null; |
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| 231 | } |
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| 232 | return $this->alreadyDefined[$cacheKey] = $schema; |
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| 233 | } |
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| 234 | |||
| 235 | private function filterObjectAccess(ObjectAccessInterface $objectAccess, string $className, array $groups): ObjectAccessInterface |
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| 246 | } |
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| 247 | |||
| 248 | private function convertTypesToSchema(array $types, string $operation, array $groups, int $recursion = 0): Schema |
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| 249 | { |
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| 250 | if (empty($types)) { |
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| 251 | return new Schema([]); |
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| 252 | } |
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| 253 | $type = reset($types); |
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| 254 | // this is only because this serializer does not do a deep populate. |
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| 255 | if ($operation === 'put') { |
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| 256 | $operation = 'post'; |
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| 257 | } |
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| 258 | return $this->convertTypeToSchema($type, $operation, $groups, $recursion); |
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| 259 | } |
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| 260 | |||
| 261 | /** |
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| 262 | * Returns OpenApi property type for scalars. |
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| 263 | * |
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| 264 | * @param string $type |
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| 265 | * @return string |
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| 266 | */ |
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| 267 | private function translateType(string $type): string |
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| 277 | } |
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| 278 | |||
| 279 | /** |
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| 280 | * Convert Type into Schema. |
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| 281 | * |
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| 282 | * @param Type $type |
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| 283 | * @param string $operation |
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| 284 | * @param string[] $groups |
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| 285 | * @param int $recursion |
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| 286 | * @internal |
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| 287 | * |
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| 288 | * @return Schema |
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| 289 | */ |
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| 290 | public function convertTypeToSchema(?Type $type, string $operation, array $groups, int $recursion): Schema |
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| 354 | } |
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| 355 | |||
| 356 | /** |
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| 357 | * Define an OpenAPI discriminator spec for an interface or base class that have a discriminator column. |
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| 358 | * |
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| 359 | * @param string $resourceInterface |
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| 360 | * @param string $discriminatorColumn |
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| 361 | * @param array $subclasses |
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| 362 | * @param string $operation |
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| 363 | * @param string[] $groups |
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| 364 | * @return Schema |
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| 365 | */ |
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| 366 | public function defineSchemaForPolymorphicObject( |
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| 404 | } |
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| 405 | } |
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| 406 |
