Ability to load types in schema on demand (#69)

This commit is contained in:
Vladimir Razuvaev 2017-03-05 03:10:52 +07:00
parent d5866e194a
commit ce9bf33f20
15 changed files with 695 additions and 202 deletions

View File

@ -22,7 +22,7 @@ class HugeSchemaBench
private $schemaBuilder;
/**
* @var array
* @var Schema\Descriptor
*/
private $descriptor;
@ -54,7 +54,9 @@ class HugeSchemaBench
public function benchSchema()
{
$this->schemaBuilder
->buildSchema();
->buildSchema()
->getTypeMap()
;
}
public function benchSchemaLazy()
@ -75,16 +77,13 @@ class HugeSchemaBench
private function createLazySchema()
{
$strategy = new LazyResolution(
$this->descriptor,
function($name) {
return $this->schemaBuilder->loadType($name);
}
return new Schema(
Schema\Config::create()
->setQuery($this->schemaBuilder->buildQueryType())
// ->setDescriptor($this->descriptor)
->setTypeLoader(function($name) {
return $this->schemaBuilder->loadType($name);
})
);
return new Schema([
'query' => $this->schemaBuilder->buildQueryType(),
'typeResolution' => $strategy,
]);
}
}

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@ -5,6 +5,7 @@ use GraphQL\Error\Error;
use GraphQL\Error\InvariantViolation;
use GraphQL\Executor\Promise\Adapter\SyncPromiseAdapter;
use GraphQL\Executor\Promise\Promise;
use GraphQL\GraphQL;
use GraphQL\Language\AST\DocumentNode;
use GraphQL\Language\AST\FieldNode;
use GraphQL\Language\AST\FragmentDefinitionNode;
@ -16,6 +17,7 @@ use GraphQL\Schema;
use GraphQL\Type\Definition\AbstractType;
use GraphQL\Type\Definition\Directive;
use GraphQL\Type\Definition\FieldDefinition;
use GraphQL\Type\Definition\InterfaceType;
use GraphQL\Type\Definition\LeafType;
use GraphQL\Type\Definition\ListOfType;
use GraphQL\Type\Definition\NonNull;
@ -974,6 +976,16 @@ class Executor
$runtimeType = $returnType->resolveType($result, $exeContext->contextValue, $info);
if (null === $runtimeType) {
if ($returnType instanceof InterfaceType && !$exeContext->schema->getConfig()->descriptor &&
!GraphQL::isIgnoredError(GraphQL::WARNING_ON_IMPLEMENTATION_RESOLUTION)) {
trigger_error(
"GraphQL Interface Type `{$returnType->name}` returned `null` from it`s `resolveType` function ".
'for value: ' . Utils::printSafe($result) . '. Switching to slow resolution method using `isTypeOf` ' .
'of all possible implementations. It degrades query performance significantly. '.
' Make sure your `resolveType` always returns valid implementation or throws.',
E_USER_WARNING
);
}
$runtimeType = self::inferTypeOf($result, $exeContext->contextValue, $info, $returnType);
}

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@ -16,6 +16,20 @@ use GraphQL\Validator\Rules\QueryComplexity;
class GraphQL
{
const WARNING_ON_IMPLEMENTATION_RESOLUTION = 1;
private static $ignoredErrors = [];
public static function setIgnoreError($errorCode, $set = true)
{
self::$ignoredErrors[$errorCode] = $set ? true : null;
}
public static function isIgnoredError($errorCode)
{
return isset(self::$ignoredErrors[$errorCode]);
}
/**
* @param Schema $schema
* @param string|DocumentNode $requestString

View File

@ -1,13 +1,15 @@
<?php
namespace GraphQL;
use GraphQL\Schema\Config;
use GraphQL\Schema\Descriptor;
use GraphQL\Type\Definition\AbstractType;
use GraphQL\Type\Definition\Directive;
use GraphQL\Type\Definition\InterfaceType;
use GraphQL\Type\Definition\ObjectType;
use GraphQL\Type\Definition\Type;
use GraphQL\Type\EagerResolution;
use GraphQL\Type\Definition\UnionType;
use GraphQL\Type\Introspection;
use GraphQL\Type\Resolution;
/**
* Schema Definition
@ -39,30 +41,35 @@ use GraphQL\Type\Resolution;
class Schema
{
/**
* @var array
* @var Config
*/
private $config;
/**
* @var array<string, array<string, boolean>>
*/
private $possibleTypeMap = [];
/**
* @var Resolution
*/
private $typeResolutionStrategy;
/**
* Required for `getTypeMap()` and `getDescriptor()` methods
* Contains actual descriptor for this schema
*
* @var EagerResolution
* @var Descriptor
*/
private $eagerTypeResolutionStrategy;
private $descriptor;
/**
* Contains currently resolved schema types
*
* @var Type[]
*/
private $resolvedTypes = [];
/**
* True when $resolvedTypes contain all possible schema types
*
* @var bool
*/
private $fullyLoaded = false;
/**
* Schema constructor.
* @param array $config
*
* @param array|Config $config
*/
public function __construct($config = null)
{
@ -74,63 +81,36 @@ class Schema
);
list($queryType, $mutationType, $subscriptionType) = func_get_args() + [null, null, null];
$config = [
'query' => $queryType,
'mutation' => $mutationType,
'subscription' => $subscriptionType
];
$config = Config::create()
->setQuery($queryType)
->setMutation($mutationType)
->setSubscription($subscriptionType)
;
} else if (is_array($config)) {
$config = Config::create($config);
}
$config += [
'query' => null,
'mutation' => null,
'subscription' => null,
'types' => [],
'directives' => null,
'typeResolution' => null
];
$this->init($config);
}
/**
* @param array $config
*/
private function init(array $config)
{
Utils::invariant(
$config['query'] instanceof ObjectType,
"Schema query must be Object Type but got: " . Utils::getVariableType($config['query'])
$config instanceof Config,
'Schema constructor expects instance of GraphQL\Schema\Config or an array with keys: %s; but got: %s',
implode(', ', [
'query',
'mutation',
'subscription',
'types',
'directives',
'descriptor',
'typeLoader'
]),
Utils::getVariableType($config)
);
Utils::invariant(
!$config['mutation'] || $config['mutation'] instanceof ObjectType,
"Schema mutation must be Object Type if provided but got: " . Utils::getVariableType($config['mutation'])
);
Utils::invariant(
!$config['subscription'] || $config['subscription'] instanceof ObjectType,
"Schema subscription must be Object Type if provided but got: " . Utils::getVariableType($config['subscription'])
);
Utils::invariant(
!$config['types'] || is_array($config['types']),
"Schema types must be Array if provided but got: " . Utils::getVariableType($config['types'])
);
Utils::invariant(
!$config['directives'] || (is_array($config['directives']) && Utils::every($config['directives'], function($d) {return $d instanceof Directive;})),
"Schema directives must be Directive[] if provided but got " . Utils::getVariableType($config['directives'])
);
Utils::invariant(
!$config['typeResolution'] || $config['typeResolution'] instanceof Resolution,
"Type resolution strategy is expected to be instance of GraphQL\\Type\\Resolution, but got " .
Utils::getVariableType($config['typeResolution'])
$config->query instanceof ObjectType,
"Schema query must be Object Type but got: " . Utils::getVariableType($config->query)
);
$this->config = $config;
$this->typeResolutionStrategy = $config['typeResolution'] ?: $this->getEagerTypeResolutionStrategy();
}
/**
@ -138,53 +118,126 @@ class Schema
*/
public function getQueryType()
{
return $this->config['query'];
return $this->config->query;
}
/**
* @return ObjectType
* @return ObjectType|null
*/
public function getMutationType()
{
return $this->config['mutation'];
return $this->config->mutation;
}
/**
* @return ObjectType
* @return ObjectType|null
*/
public function getSubscriptionType()
{
return $this->config['subscription'];
return $this->config->subscription;
}
/**
* @return Config
*/
public function getConfig()
{
return $this->config;
}
/**
* Returns full map of types in this schema.
* Note: internally it will eager-load all types using GraphQL\Type\EagerResolution strategy
*
* @return Type[]
*/
public function getTypeMap()
{
return $this->getEagerTypeResolutionStrategy()->getTypeMap();
if (!$this->fullyLoaded) {
if ($this->config->descriptor && $this->config->typeLoader) {
$typesToResolve = array_diff_key($this->config->descriptor->typeMap, $this->resolvedTypes);
foreach ($typesToResolve as $typeName => $_) {
$this->resolvedTypes[$typeName] = $this->loadType($typeName);
}
} else {
$this->resolvedTypes = $this->collectAllTypes();
}
$this->fullyLoaded = true;
}
return $this->resolvedTypes;
}
/**
* Returns type by it's name
*
* @param string $name
* @return Type
*/
public function getType($name)
{
return $this->typeResolutionStrategy->resolveType($name);
return $this->resolveType($name);
}
/**
* Returns serializable schema representation suitable for GraphQL\Type\LazyResolution
* Returns serializable schema descriptor which can be passed later
* to Schema config to enable a set of performance optimizations
*
* @return array
* @return Descriptor
*/
public function getDescriptor()
{
return $this->getEagerTypeResolutionStrategy()->getDescriptor();
if ($this->descriptor) {
return $this->descriptor;
}
if ($this->config->descriptor) {
return $this->config->descriptor;
}
return $this->descriptor = $this->buildDescriptor();
}
/**
* @return Descriptor
*/
public function buildDescriptor()
{
$this->resolvedTypes = $this->collectAllTypes();
$this->fullyLoaded = true;
$descriptor = new Descriptor();
$descriptor->version = '1.0';
$descriptor->created = time();
foreach ($this->resolvedTypes as $type) {
if ($type instanceof ObjectType) {
foreach ($type->getInterfaces() as $interface) {
$descriptor->possibleTypeMap[$interface->name][$type->name] = 1;
}
} else if ($type instanceof UnionType) {
foreach ($type->getTypes() as $innerType) {
$descriptor->possibleTypeMap[$type->name][$innerType->name] = 1;
}
}
$descriptor->typeMap[$type->name] = 1;
}
return $this->descriptor = $descriptor;
}
private function collectAllTypes()
{
$initialTypes = [
$this->config->query,
$this->config->mutation,
$this->config->subscription,
Introspection::_schema()
];
if (!empty($this->config->types)) {
$initialTypes = array_merge($initialTypes, $this->config->types);
}
$typeMap = [];
foreach ($initialTypes as $type) {
$typeMap = Utils\TypeInfo::extractTypes($type, $typeMap);
}
return $typeMap + Type::getInternalTypes();
}
/**
@ -193,7 +246,47 @@ class Schema
*/
public function getPossibleTypes(AbstractType $abstractType)
{
return $this->typeResolutionStrategy->resolvePossibleTypes($abstractType);
if ($abstractType instanceof UnionType) {
return $abstractType->getTypes();
}
/** @var InterfaceType $abstractType */
$descriptor = $this->getDescriptor();
$result = [];
if (isset($descriptor->possibleTypeMap[$abstractType->name])) {
foreach ($descriptor->possibleTypeMap[$abstractType->name] as $typeName => $_) {
$result[] = $this->resolveType($typeName);
}
}
return $result;
}
public function resolveType($typeOrName)
{
if ($typeOrName instanceof Type) {
if ($typeOrName->name && !isset($this->resolvedTypes[$typeOrName->name])) {
$this->resolvedTypes[$typeOrName->name] = $typeOrName;
}
return $typeOrName;
}
if (!isset($this->resolvedTypes[$typeOrName])) {
$this->resolvedTypes[$typeOrName] = $this->loadType($typeOrName);
}
return $this->resolvedTypes[$typeOrName];
}
private function loadType($typeName)
{
$typeLoader = $this->config->typeLoader;
if (!$typeLoader) {
return $this->defaultTypeLoader($typeName);
}
$type = $typeLoader($typeName);
// TODO: validate returned value
return $type;
}
/**
@ -203,23 +296,16 @@ class Schema
*/
public function isPossibleType(AbstractType $abstractType, ObjectType $possibleType)
{
if (!isset($this->possibleTypeMap[$abstractType->name])) {
$tmp = [];
foreach ($this->getPossibleTypes($abstractType) as $type) {
$tmp[$type->name] = 1;
}
Utils::invariant(
!empty($tmp),
'Could not find possible implementing types for $%s ' .
'in schema. Check that schema.types is defined and is an array of ' .
'all possible types in the schema.',
$abstractType->name
);
$this->possibleTypeMap[$abstractType->name] = $tmp;
if ($this->config->descriptor) {
return !empty($this->config->descriptor->possibleTypeMap[$abstractType->name][$possibleType->name]);
}
return !empty($this->possibleTypeMap[$abstractType->name][$possibleType->name]);
if ($abstractType instanceof InterfaceType) {
return $possibleType->implementsInterface($abstractType);
}
/** @var UnionType $abstractType */
return $abstractType->isPossibleType($possibleType);
}
/**
@ -227,7 +313,7 @@ class Schema
*/
public function getDirectives()
{
return isset($this->config['directives']) ? $this->config['directives'] : GraphQL::getInternalDirectives();
return $this->config->directives ?: GraphQL::getInternalDirectives();
}
/**
@ -244,25 +330,20 @@ class Schema
return null;
}
private function getEagerTypeResolutionStrategy()
/**
* @param $typeName
* @return Type
*/
private function defaultTypeLoader($typeName)
{
if (!$this->eagerTypeResolutionStrategy) {
if ($this->typeResolutionStrategy instanceof EagerResolution) {
$this->eagerTypeResolutionStrategy = $this->typeResolutionStrategy;
} else {
// Build type map now to detect any errors within this schema.
$initialTypes = [
$this->config['query'],
$this->config['mutation'],
$this->config['subscription'],
Introspection::_schema()
];
if (!empty($this->config['types'])) {
$initialTypes = array_merge($initialTypes, $this->config['types']);
}
$this->eagerTypeResolutionStrategy = new EagerResolution($initialTypes);
}
// Default type loader simply fallbacks to collecting all types
if (!$this->fullyLoaded) {
$this->resolvedTypes = $this->collectAllTypes();
$this->fullyLoaded = true;
}
return $this->eagerTypeResolutionStrategy;
if (!isset($this->resolvedTypes[$typeName])) {
return null;
}
return $this->resolvedTypes[$typeName];
}
}

262
src/Schema/Config.php Normal file
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@ -0,0 +1,262 @@
<?php
namespace GraphQL\Schema;
use GraphQL\Type\Definition\Directive;
use GraphQL\Type\Definition\ObjectType;
use GraphQL\Type\Definition\Type;
use GraphQL\Utils;
/**
* Class Config
* Note: properties are marked as public for performance reasons. They should be considered read-only.
*
* @package GraphQL\Schema
*/
final class Config
{
/**
* @var ObjectType
*/
public $query;
/**
* @var ObjectType
*/
public $mutation;
/**
* @var ObjectType
*/
public $subscription;
/**
* @var Type[]
*/
public $types;
/**
* @var Directive[]
*/
public $directives;
/**
* @var Descriptor
*/
public $descriptor;
/**
* @var callable
*/
public $typeLoader;
/**
* @param array $options
* @return Config
*/
public static function create(array $options = [])
{
$config = new static();
if (!empty($options)) {
if (isset($options['query'])) {
Utils::invariant(
$options['query'] instanceof ObjectType,
"Schema query must be Object Type if provided but got: " . Utils::getVariableType($options['query'])
);
$config->setQuery($options['query']);
}
if (isset($options['mutation'])) {
Utils::invariant(
$options['mutation'] instanceof ObjectType,
"Schema mutation must be Object Type if provided but got: " . Utils::getVariableType($options['mutation'])
);
$config->setMutation($options['mutation']);
}
if (isset($options['subscription'])) {
Utils::invariant(
$options['subscription'] instanceof ObjectType,
"Schema subscription must be Object Type if provided but got: " . Utils::getVariableType($options['subscription'])
);
$config->setSubscription($options['subscription']);
}
if (isset($options['types'])) {
Utils::invariant(
is_array($options['types']),
"Schema types must be array if provided but got: " . Utils::getVariableType($options['types'])
);
$config->setTypes($options['types']);
}
if (isset($options['directives'])) {
Utils::invariant(
is_array($options['directives']),
"Schema directives must be array if provided but got: " . Utils::getVariableType($options['directives'])
);
$config->setDirectives($options['directives']);
}
if (isset($options['typeLoader'])) {
Utils::invariant(
is_callable($options['typeLoader']),
"Schema type loader must be callable if provided but got: " . Utils::getVariableType($options['typeLoader'])
);
}
if (isset($options['descriptor'])) {
Utils::invariant(
$options['descriptor'] instanceof Descriptor,
"Schema descriptor must be instance of GraphQL\\Schema\\Descriptor but got: " . Utils::getVariableType($options['descriptor'])
);
}
}
return $config;
}
/**
* @return ObjectType
*/
public function getQuery()
{
return $this->query;
}
/**
* @param ObjectType $query
* @return Config
*/
public function setQuery(ObjectType $query)
{
$this->query = $query;
return $this;
}
/**
* @return ObjectType
*/
public function getMutation()
{
return $this->mutation;
}
/**
* @param ObjectType $mutation
* @return Config
*/
public function setMutation(ObjectType $mutation)
{
$this->mutation = $mutation;
return $this;
}
/**
* @return ObjectType
*/
public function getSubscription()
{
return $this->subscription;
}
/**
* @param ObjectType $subscription
* @return Config
*/
public function setSubscription(ObjectType $subscription)
{
$this->subscription = $subscription;
return $this;
}
/**
* @return Type[]
*/
public function getTypes()
{
return $this->types;
}
/**
* @param Type[] $types
* @return Config
*/
public function setTypes($types)
{
foreach ($types as $index => $type) {
Utils::invariant(
$type instanceof Type,
'Schema types must be GraphQL\Type\Definition\Type[], but entry at index "%s" is "%s"',
$index,
Utils::getVariableType($type)
);
}
$this->types = $types;
return $this;
}
/**
* @return Directive[]
*/
public function getDirectives()
{
return $this->directives;
}
/**
* @param Directive[] $directives
* @return Config
*/
public function setDirectives(array $directives)
{
foreach ($directives as $index => $directive) {
Utils::invariant(
$directive instanceof Directive,
'Schema directives must be GraphQL\Type\Definition\Directive[] if provided but but entry at index "%s" is "%s"',
$index,
Utils::getVariableType($directive)
);
}
$this->directives = $directives;
return $this;
}
/**
* @return Descriptor
*/
public function getDescriptor()
{
return $this->descriptor;
}
/**
* @param Descriptor $descriptor
* @return Config
*/
public function setDescriptor(Descriptor $descriptor)
{
$this->descriptor = $descriptor;
return $this;
}
/**
* @return callable
*/
public function getTypeLoader()
{
return $this->typeLoader;
}
/**
* @param callable $typeLoader
* @return Config
*/
public function setTypeLoader(callable $typeLoader)
{
$this->typeLoader = $typeLoader;
return $this;
}
}

61
src/Schema/Descriptor.php Normal file
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@ -0,0 +1,61 @@
<?php
namespace GraphQL\Schema;
use GraphQL\Utils;
class Descriptor implements \JsonSerializable
{
public $version = '1.0';
public $typeMap = [];
public $possibleTypeMap = [];
public $created;
public static function fromArray(array $array)
{
Utils::invariant(
isset($array['version'], $array['typeMap'], $array['possibleTypeMap'], $array['created']),
__METHOD__ . ' expects array with keys "version", "typeMap", "possibleTypeMap", "created" but got keys: %s',
implode(', ', array_keys($array))
);
Utils::invariant(
is_string($array['version']) && '1.0' === $array['version'],
__METHOD__ . ' expects array where "version" key equals to "1.0"'
);
Utils::invariant(
is_array($array['typeMap']) && is_array($array['possibleTypeMap']),
__METHOD__ . ' expects array where "typeMap" and "possibleTypeMap" keys are arrays'
);
Utils::invariant(
is_int($array['created']),
__METHOD__ . ' expects array where "created" key is integer timestamp'
);
$descriptor = new self();
Utils::assign($descriptor, $array);
}
public function toArray()
{
return [
'typeMap' => $this->typeMap,
'version' => $this->version,
'possibleTypeMap' => $this->possibleTypeMap,
'created' => $this->created
];
}
/**
* Specify data which should be serialized to JSON
* @link http://php.net/manual/en/jsonserializable.jsonserialize.php
* @return mixed data which can be serialized by <b>json_encode</b>,
* which is a value of any type other than a resource.
* @since 5.4.0
*/
function jsonSerialize()
{
return $this->toArray();
}
}

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@ -56,6 +56,11 @@ class ObjectType extends Type implements OutputType, CompositeType
*/
private $interfaces;
/**
* @var array
*/
private $interfaceMap = [];
/**
* Keeping reference of config for late bindings and custom app-level metadata
*
@ -147,7 +152,9 @@ class ObjectType extends Type implements OutputType, CompositeType
if (!$iface instanceof InterfaceType) {
throw new InvariantViolation("Expecting interface type, got " . Utils::printSafe($iface));
}
// TODO: return interfaceMap vs interfaces. Possibly breaking change?
$this->interfaces[] = $iface;
$this->interfaceMap[$iface->name] = $iface;
}
}
return $this->interfaces;
@ -160,7 +167,8 @@ class ObjectType extends Type implements OutputType, CompositeType
public function implementsInterface($iface)
{
$iface = Type::resolve($iface);
return !!Utils::find($this->getInterfaces(), function($implemented) use ($iface) {return $iface === $implemented;});
$this->getInterfaces();
return isset($this->interfaceMap[$iface->name]);
}
/**

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@ -15,6 +15,7 @@ use GraphQL\Language\AST\TypeDefinitionNode;
use GraphQL\Language\AST\TypeNode;
use GraphQL\Language\AST\UnionTypeDefinitionNode;
use GraphQL\Language\Parser;
use GraphQL\Language\Source;
use GraphQL\Language\Token;
use GraphQL\Schema;
use GraphQL\Type\Definition\Directive;
@ -221,7 +222,7 @@ class BuildSchema
$directives[] = Directive::deprecatedDirective();
}
return new Schema([
$schema = new Schema([
'query' => $this->getObjectType($this->nodeMap[$queryTypeName]),
'mutation' => $mutationTypeName ?
$this->getObjectType($this->nodeMap[$mutationTypeName]) :
@ -232,6 +233,12 @@ class BuildSchema
'types' => $types,
'directives' => $directives,
]);
// Types in schema are loaded lazily, but we need full scan to ensure that schema is consistent
// Following statement will force Schema to scan all types and fields:
// TODO: replace this call with schema validator once it's ready
$schema->getTypeMap();
return $schema;
}
private function getDirective(DirectiveDefinitionNode $directiveNode)
@ -508,7 +515,7 @@ class BuildSchema
* document.
*
* @param Source|string $source
* @return
* @return Schema
*/
public static function build($source)
{

View File

@ -39,21 +39,8 @@ class FieldsOnCorrectType
if ($type) {
$fieldDef = $context->getFieldDef();
if (!$fieldDef) {
// This isn't valid. Let's find suggestions, if any.
$suggestedTypes = [];
if ($type instanceof AbstractType) {
$schema = $context->getSchema();
$suggestedTypes = self::getSiblingInterfacesIncludingField(
$schema,
$type,
$node->name->value
);
$suggestedTypes = array_merge($suggestedTypes,
self::getImplementationsIncludingField($schema, $type, $node->name->value)
);
}
$context->reportError(new Error(
static::undefinedFieldMessage($node->name->value, $type->name, $suggestedTypes),
static::undefinedFieldMessage($node->name->value, $type->name),
[$node]
));
}
@ -61,49 +48,4 @@ class FieldsOnCorrectType
}
];
}
/**
* Return implementations of `type` that include `fieldName` as a valid field.
*
* @param Schema $schema
* @param AbstractType $type
* @param $fieldName
* @return array
*/
static function getImplementationsIncludingField(Schema $schema, AbstractType $type, $fieldName)
{
$types = $schema->getPossibleTypes($type);
$types = Utils::filter($types, function($t) use ($fieldName) {return isset($t->getFields()[$fieldName]);});
$types = Utils::map($types, function($t) {return $t->name;});
sort($types);
return $types;
}
/**
* Go through all of the implementations of type, and find other interaces
* that they implement. If those interfaces include `field` as a valid field,
* return them, sorted by how often the implementations include the other
* interface.
*/
static function getSiblingInterfacesIncludingField(Schema $schema, AbstractType $type, $fieldName)
{
$types = $schema->getPossibleTypes($type);
$suggestedInterfaces = array_reduce($types, function ($acc, $t) use ($fieldName) {
foreach ($t->getInterfaces() as $i) {
if (empty($i->getFields()[$fieldName])) {
continue;
}
if (!isset($acc[$i->name])) {
$acc[$i->name] = 0;
}
$acc[$i->name] += 1;
}
return $acc;
}, []);
$suggestedInterfaceNames = array_keys($suggestedInterfaces);
usort($suggestedInterfaceNames, function($a, $b) use ($suggestedInterfaces) {
return $suggestedInterfaces[$b] - $suggestedInterfaces[$a];
});
return $suggestedInterfaceNames;
}
}

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@ -7,7 +7,12 @@ use GraphQL\Language\AST\FragmentSpreadNode;
use GraphQL\Language\AST\InlineFragmentNode;
use GraphQL\Language\AST\Node;
use GraphQL\Language\AST\NodeKind;
use GraphQL\Utils;
use GraphQL\Schema;
use GraphQL\Type\Definition\AbstractType;
use GraphQL\Type\Definition\CompositeType;
use GraphQL\Type\Definition\InterfaceType;
use GraphQL\Type\Definition\ObjectType;
use GraphQL\Type\Definition\UnionType;
use GraphQL\Validator\ValidationContext;
use GraphQL\Utils\TypeInfo;
@ -30,7 +35,7 @@ class PossibleFragmentSpreads
$fragType = $context->getType();
$parentType = $context->getParentType();
if ($fragType && $parentType && !TypeInfo::doTypesOverlap($context->getSchema(), $fragType, $parentType)) {
if ($fragType && $parentType && !$this->doTypesOverlap($context->getSchema(), $fragType, $parentType)) {
$context->reportError(new Error(
self::typeIncompatibleAnonSpreadMessage($parentType, $fragType),
[$node]
@ -42,7 +47,7 @@ class PossibleFragmentSpreads
$fragType = $this->getFragmentType($context, $fragName);
$parentType = $context->getParentType();
if ($fragType && $parentType && !TypeInfo::doTypesOverlap($context->getSchema(), $fragType, $parentType)) {
if ($fragType && $parentType && !$this->doTypesOverlap($context->getSchema(), $fragType, $parentType)) {
$context->reportError(new Error(
self::typeIncompatibleSpreadMessage($fragName, $parentType, $fragType),
[$node]
@ -57,4 +62,72 @@ class PossibleFragmentSpreads
$frag = $context->getFragment($name);
return $frag ? TypeInfo::typeFromAST($context->getSchema(), $frag->typeCondition) : null;
}
private function doTypesOverlap(Schema $schema, CompositeType $fragType, CompositeType $parentType)
{
// Checking in the order of the most frequently used scenarios:
// Parent type === fragment type
if ($parentType === $fragType) {
return true;
}
// Parent type is interface or union, fragment type is object type
if ($parentType instanceof AbstractType && $fragType instanceof ObjectType) {
return $schema->isPossibleType($parentType, $fragType);
}
// Parent type is object type, fragment type is interface (or rather rare - union)
if ($parentType instanceof ObjectType && $fragType instanceof AbstractType) {
return $schema->isPossibleType($fragType, $parentType);
}
// Both are object types:
if ($parentType instanceof ObjectType && $fragType instanceof ObjectType) {
return $parentType === $fragType;
}
// Both are interfaces
// This case may be assumed valid only when implementations of two interfaces intersect
// But we don't have information about all implementations at runtime
// (getting this information via $schema->getPossibleTypes() requires scanning through whole schema
// which is very costly to do at each request due to PHP "shared nothing" architecture)
//
// So in this case we just make it pass - invalid fragment spreads will be simply ignored during execution
// See also https://github.com/webonyx/graphql-php/issues/69#issuecomment-283954602
if ($parentType instanceof InterfaceType && $fragType instanceof InterfaceType) {
return true;
// Note that there is one case when we do have information about all implementations:
// When schema descriptor is defined ($schema->hasDescriptor())
// BUT we must avoid situation when some query that worked in development had suddenly stopped
// working in production. So staying consistent and always validate.
}
// Interface within union
if ($parentType instanceof UnionType && $fragType instanceof InterfaceType) {
foreach ($parentType->getTypes() as $type) {
if ($type->implementsInterface($fragType)) {
return true;
}
}
}
if ($parentType instanceof InterfaceType && $fragType instanceof UnionType) {
foreach ($fragType->getTypes() as $type) {
if ($type->implementsInterface($parentType)) {
return true;
}
}
}
if ($parentType instanceof UnionType && $fragType instanceof UnionType) {
foreach ($fragType->getTypes() as $type) {
if ($parentType->isPossibleType($type)) {
return true;
}
}
}
return false;
}
}

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@ -89,7 +89,29 @@ class AbstractTest extends \PHPUnit_Framework_TestCase
]
]);
$this->assertEquals($expected, Executor::execute($schema, Parser::parse($query)));
GraphQL::setIgnoreError(GraphQL::WARNING_ON_IMPLEMENTATION_RESOLUTION);
$result = Executor::execute($schema, Parser::parse($query));
$this->assertEquals($expected, $result);
GraphQL::setIgnoreError(GraphQL::WARNING_ON_IMPLEMENTATION_RESOLUTION, false);
$result = Executor::execute($schema, Parser::parse($query));
$this->assertEquals(2, count($result->errors));
$this->assertInstanceOf('PHPUnit_Framework_Error_Warning', $result->errors[0]->getPrevious());
$this->assertInstanceOf('PHPUnit_Framework_Error_Warning', $result->errors[1]->getPrevious());
$this->assertEquals(
'GraphQL Interface Type `Pet` returned `null` from it`s `resolveType` function for value: '.
'instance of GraphQL\Tests\Executor\Dog. Switching to slow resolution method using `isTypeOf` of '.
'all possible implementations. It degrades query performance significantly. '.
'Make sure your `resolveType` always returns valid implementation or throws.',
$result->errors[0]->getMessage());
$this->assertEquals(
'GraphQL Interface Type `Pet` returned `null` from it`s `resolveType` function for value: '.
'instance of GraphQL\Tests\Executor\Cat. Switching to slow resolution method using `isTypeOf` of '.
'all possible implementations. It degrades query performance significantly. '.
'Make sure your `resolveType` always returns valid implementation or throws.',
$result->errors[1]->getMessage());
}
/**

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@ -256,7 +256,9 @@ class UnionInterfaceTest extends \PHPUnit_Framework_TestCase
]
];
GraphQL::setIgnoreError(GraphQL::WARNING_ON_IMPLEMENTATION_RESOLUTION);
$this->assertEquals($expected, Executor::execute($this->schema, $ast, $this->john)->toArray());
GraphQL::setIgnoreError(GraphQL::WARNING_ON_IMPLEMENTATION_RESOLUTION, false);
}
/**
@ -292,7 +294,9 @@ class UnionInterfaceTest extends \PHPUnit_Framework_TestCase
]
];
GraphQL::setIgnoreError(GraphQL::WARNING_ON_IMPLEMENTATION_RESOLUTION);
$this->assertEquals($expected, Executor::execute($this->schema, $ast, $this->john)->toArray());
GraphQL::setIgnoreError(GraphQL::WARNING_ON_IMPLEMENTATION_RESOLUTION, false);
}
/**
@ -347,7 +351,9 @@ class UnionInterfaceTest extends \PHPUnit_Framework_TestCase
]
];
GraphQL::setIgnoreError(GraphQL::WARNING_ON_IMPLEMENTATION_RESOLUTION);
$this->assertEquals($expected, Executor::execute($this->schema, $ast, $this->john)->toArray());
GraphQL::setIgnoreError(GraphQL::WARNING_ON_IMPLEMENTATION_RESOLUTION, false);
}
/**

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@ -544,6 +544,8 @@ class DefinitionTest extends \PHPUnit_Framework_TestCase
'types' => [$user, $blog]
]);
$this->assertFalse($called);
$schema->getType('Query');
$this->assertTrue($called);
$this->assertEquals([$node], $blog->getInterfaces());
@ -584,8 +586,8 @@ class DefinitionTest extends \PHPUnit_Framework_TestCase
'mutation' => $someMutation
]);
$this->assertTrue($called);
$this->assertSame($inputObject, $schema->getType('InputObject'));
$this->assertTrue($called);
$this->assertEquals(count($inputObject->getFields()), 2);
$this->assertSame($inputObject->getField('nested')->getType(), $inputObject);
$this->assertSame($someMutation->getField('mutateSomething')->getArg('input')->getType(), $inputObject);
@ -616,8 +618,8 @@ class DefinitionTest extends \PHPUnit_Framework_TestCase
'query' => $query
]);
$this->assertTrue($called);
$this->assertSame($interface, $schema->getType('SomeInterface'));
$this->assertTrue($called);
$this->assertEquals(count($interface->getFields()), 2);
$this->assertSame($interface->getField('nested')->getType(), $interface);
$this->assertSame($interface->getField('value')->getType(), Type::string());

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@ -208,7 +208,8 @@ class FieldsOnCorrectTypeTest extends TestCase
fragment definedOnImplementorsButNotInterface on Pet {
nickname
}',
[$this->undefinedField('nickname', 'Pet', [ 'Cat', 'Dog' ], 3, 9)]
//[$this->undefinedField('nickname', 'Pet', [ 'Cat', 'Dog' ], 3, 9)]
[$this->undefinedField('nickname', 'Pet', [ ], 3, 9)]
);
}
@ -246,7 +247,8 @@ class FieldsOnCorrectTypeTest extends TestCase
fragment definedOnImplementorsQueriedOnUnion on CatOrDog {
name
}',
[$this->undefinedField('name', 'CatOrDog', [ 'Being', 'Pet', 'Canine', 'Cat', 'Dog' ], 3, 9)]
//[$this->undefinedField('name', 'CatOrDog', [ 'Being', 'Pet', 'Canine', 'Cat', 'Dog' ], 3, 9)]
[$this->undefinedField('name', 'CatOrDog', [ ], 3, 9)]
);
}

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@ -238,14 +238,15 @@ class PossibleFragmentSpreadsTest extends TestCase
*/
public function testInterfaceIntoNonOverlappingInterface()
{
$this->expectFailsRule(new PossibleFragmentSpreads, '
// Ideally this should fail, but our new lazy schema doesn't scan through all types and fields
// So we don't have enough knowledge to check interface intersection and always allow this to pass:
$this->expectPassesRule(new PossibleFragmentSpreads, '
fragment invalidInterfaceWithinInterface on Pet {
...intelligentFragment
}
fragment intelligentFragment on Intelligent { iq }
',
[$this->error('intelligentFragment', 'Pet', 'Intelligent', 3, 9)]
);
');
}
/**
@ -253,13 +254,14 @@ class PossibleFragmentSpreadsTest extends TestCase
*/
public function testInterfaceIntoNonOverlappingInterfaceInInlineFragment()
{
$this->expectFailsRule(new PossibleFragmentSpreads, '
// Ideally this should fail, but our new lazy schema doesn't scan through all types and fields
// So we don't have enough knowledge to check interface intersection and always allow this to pass:
$this->expectPassesRule(new PossibleFragmentSpreads, '
fragment invalidInterfaceWithinInterfaceAnon on Pet {
...on Intelligent { iq }
}
',
[$this->errorAnon('Pet', 'Intelligent', 3, 9)]
);
');
}
/**