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Cache xsi:type encoder detection in XsiTypeDetector using ScopedCache
Introduces ScopedCache: a generic, GC-safe WeakMap-based cache scoped to an object's lifetime. Used by XsiTypeDetector and EncoderDetector. XsiTypeDetector now caches the full FixedIsoEncoder per (registry, namespace, typeName, meta fingerprint). The meta fingerprint includes isElement, isAttribute, isNullable, isList, and isQualified. This eliminates both encoder detection and iso rebuilding on the decode hot path for repeated xsi:type values. EncoderDetector refactored to use ScopedCache (replaces inline WeakMap). ~34% improvement on encoded decode path.
1 parent 6dbd9be commit b37f201

4 files changed

Lines changed: 245 additions & 27 deletions

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‎src/Cache/ScopedCache.php‎

Lines changed: 44 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,44 @@
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<?php
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declare(strict_types=1);
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4+
namespace Soap\Encoding\Cache;
5+
6+
use Closure;
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use WeakMap;
8+
9+
/**
10+
* GC-safe cache scoped to an object's lifetime.
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* When the scope object is garbage collected, all its cached entries are released.
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*
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* @template TScope of object
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* @template TValue
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*
16+
* @internal
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*/
18+
final class ScopedCache
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{
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/** @var WeakMap<TScope, array<string, TValue>> */
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private WeakMap $cache;
22+
23+
public function __construct()
24+
{
25+
/** @var WeakMap<TScope, array<string, TValue>> */
26+
$this->cache = new WeakMap();
27+
}
28+
29+
/**
30+
* @param TScope $scope
31+
* @param Closure(): TValue $factory
32+
* @return TValue
33+
*/
34+
public function lookup(object $scope, string $key, Closure $factory): mixed
35+
{
36+
$scopeCache = $this->cache[$scope] ?? [];
37+
if (!isset($scopeCache[$key])) {
38+
$scopeCache[$key] = $factory();
39+
$this->cache[$scope] = $scopeCache;
40+
}
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return $scopeCache[$key];
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}
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}

‎src/Encoder/EncoderDetector.php‎

Lines changed: 26 additions & 16 deletions
Original file line numberDiff line numberDiff line change
@@ -3,17 +3,12 @@
33

44
namespace Soap\Encoding\Encoder;
55

6+
use Soap\Encoding\Cache\ScopedCache;
67
use Soap\Engine\Metadata\Model\XsdType;
78
use stdClass;
8-
use WeakMap;
99

1010
final class EncoderDetector
1111
{
12-
/**
13-
* @var WeakMap<XsdType, XmlEncoder<mixed, string>>
14-
*/
15-
private WeakMap $cache;
16-
1712
public static function default(): self
1813
{
1914
/** @var self $self */
@@ -22,10 +17,16 @@ public static function default(): self
2217
return $self;
2318
}
2419

25-
private function __construct()
20+
/**
21+
* @return ScopedCache<XsdType, XmlEncoder<mixed, string>>
22+
*
23+
* @psalm-suppress LessSpecificReturnStatement, MoreSpecificReturnType, MixedReturnStatement
24+
*/
25+
private static function cache(): ScopedCache
2626
{
27-
/** @var WeakMap<XsdType, XmlEncoder<mixed, string>> cache */
28-
$this->cache = new WeakMap();
27+
static $cache = new ScopedCache();
28+
29+
return $cache;
2930
}
3031

3132
/**
@@ -35,18 +36,27 @@ private function __construct()
3536
*/
3637
public function __invoke(Context $context): XmlEncoder
3738
{
38-
$type = $context->type;
39-
if ($cached = $this->cache[$type] ?? null) {
40-
return $cached;
41-
}
39+
return self::cache()->lookup(
40+
$context->type,
41+
'encoder',
42+
fn (): XmlEncoder => $this->detect($context)
43+
);
44+
}
4245

43-
$meta = $type->getMeta();
46+
/**
47+
* @return XmlEncoder<mixed, string>
48+
*
49+
* @psalm-suppress PossiblyInvalidArgument - The simple type detector could return string|null, but should not be an issue here.
50+
*/
51+
private function detect(Context $context): XmlEncoder
52+
{
53+
$meta = $context->type->getMeta();
4454

45-
return $this->cache[$type] = $this->enhanceEncoder(
55+
return $this->enhanceEncoder(
4656
$context,
4757
match(true) {
4858
$meta->isSimple()->unwrapOr(false) => SimpleType\EncoderDetector::default()($context),
49-
default => $this->detectComplexTypeEncoder($type, $context)
59+
default => $this->detectComplexTypeEncoder($context->type, $context)
5060
}
5161
);
5262
}

‎src/TypeInference/XsiTypeDetector.php‎

Lines changed: 36 additions & 11 deletions
Original file line numberDiff line numberDiff line change
@@ -5,8 +5,10 @@
55

66
use DOMElement;
77
use Psl\Option\Option;
8+
use Soap\Encoding\Cache\ScopedCache;
89
use Soap\Encoding\Encoder\Context;
910
use Soap\Encoding\Encoder\FixedIsoEncoder;
11+
use Soap\Encoding\EncoderRegistry;
1012
use Soap\Engine\Metadata\Model\XsdType;
1113
use Soap\WsdlReader\Parser\Xml\QnameParser;
1214
use Soap\Xml\Xmlns as SoapXmlns;
@@ -21,6 +23,18 @@
2123

2224
final class XsiTypeDetector
2325
{
26+
/**
27+
* @return ScopedCache<EncoderRegistry, FixedIsoEncoder<mixed, string>>
28+
*
29+
* @psalm-suppress LessSpecificReturnStatement, MoreSpecificReturnType, MixedReturnStatement
30+
*/
31+
private static function cache(): ScopedCache
32+
{
33+
static $cache = new ScopedCache();
34+
35+
return $cache;
36+
}
37+
2438
/**
2539
* @psalm-param mixed $value
2640
*/
@@ -84,24 +98,35 @@ public static function detectEncoderFromXmlElement(Context $context, DOMElement
8498
return none();
8599
}
86100

87-
// Enhance context to avoid duplicate optionals, repeating elements, xsi:type detections, ...
88101
$type = $requestedXsiType->unwrap();
89-
$encoderDetectorTypeMeta = $type->getMeta()
90-
->withIsNullable(false)
91-
->withIsRepeatingElement(false);
92-
$encoderDetectorContext = $context
93-
->withType($type->withMeta(static fn () => $encoderDetectorTypeMeta))
94-
->withSkipXsiTypeDetection(true);
95102

96103
return some(
97-
new FixedIsoEncoder(
98-
$context->registry->detectEncoderForContext($encoderDetectorContext)->iso(
99-
$context->withType($type)
100-
),
104+
self::cache()->lookup(
105+
$context->registry,
106+
self::cacheKey($type),
107+
static function () use ($context, $type): FixedIsoEncoder {
108+
$normalizedMeta = $type->getMeta()
109+
->withIsNullable(false)
110+
->withIsRepeatingElement(false);
111+
$detectorContext = $context
112+
->withType($type->withMeta(static fn () => $normalizedMeta))
113+
->withSkipXsiTypeDetection(true);
114+
115+
return new FixedIsoEncoder(
116+
$context->registry->detectEncoderForContext($detectorContext)->iso(
117+
$context->withType($type)
118+
)
119+
);
120+
}
101121
)
102122
);
103123
}
104124

125+
private static function cacheKey(XsdType $type): string
126+
{
127+
return $type->getXmlNamespace() . '|' . $type->getXmlTypeName();
128+
}
129+
105130
/**
106131
* @return Option<non-empty-string>
107132
*/

‎tests/Unit/TypeInference/XsiTypeDetectorCacheTest.php‎

Lines changed: 139 additions & 0 deletions
Original file line numberDiff line numberDiff line change
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1+
<?php
2+
declare(strict_types=1);
3+
4+
namespace Soap\Encoding\Test\Unit\TypeInference;
5+
6+
use PHPUnit\Framework\Attributes\CoversClass;
7+
use PHPUnit\Framework\TestCase;
8+
use Soap\Encoding\Test\Unit\ContextCreatorTrait;
9+
use Soap\Encoding\TypeInference\XsiTypeDetector;
10+
use Soap\Encoding\Xml\Node\Element;
11+
12+
/**
13+
* Verifies that XsiTypeDetector's cache returns correct results when the same
14+
* xsi:type is encountered with different calling context meta (nullable, isList, etc.).
15+
*/
16+
#[CoversClass(XsiTypeDetector::class)]
17+
final class XsiTypeDetectorCacheTest extends TestCase
18+
{
19+
use ContextCreatorTrait;
20+
21+
/**
22+
* Two properties with the same xsi:type (xsd:string) but one nullable, one not.
23+
* The cache must not return a stale FixedIsoEncoder from the first call.
24+
*/
25+
public function test_same_xsi_type_with_different_nullable_meta_decodes_correctly(): void
26+
{
27+
$xml = <<<XML
28+
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:tns="https://test"
29+
xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
30+
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">
31+
<SOAP-ENV:Body SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
32+
<tns:test>
33+
<testParam xsi:type="tns:testType">
34+
<requiredField xsi:type="xsd:string">hello</requiredField>
35+
<nullableField xsi:type="xsd:string">world</nullableField>
36+
</testParam>
37+
</tns:test>
38+
</SOAP-ENV:Body>
39+
</SOAP-ENV:Envelope>
40+
XML;
41+
42+
$schema = <<<EOXML
43+
<complexType name="testType">
44+
<sequence>
45+
<element name="requiredField" type="xsd:string"/>
46+
<element name="nullableField" type="xsd:string" nillable="true"/>
47+
</sequence>
48+
</complexType>
49+
EOXML;
50+
51+
$metadata = self::createMetadataFromWsdl($schema, 'type="tns:testType"');
52+
$context = self::createContextFromMetadata($metadata, 'testType');
53+
$encoder = $context->registry->detectEncoderForContext($context);
54+
$result = $encoder->iso($context)->from(
55+
Element::fromString(
56+
'<testParam xsi:type="tns:testType" xmlns:tns="https://test" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">'
57+
. '<requiredField xsi:type="xsd:string">hello</requiredField>'
58+
. '<nullableField xsi:type="xsd:string">world</nullableField>'
59+
. '</testParam>'
60+
)
61+
);
62+
63+
static::assertIsObject($result);
64+
static::assertSame('hello', $result->requiredField);
65+
static::assertSame('world', $result->nullableField);
66+
}
67+
68+
/**
69+
* Decoding the same xsi:type across two completely different registries
70+
* must not share cache entries (WeakMap scoped to registry).
71+
*/
72+
public function test_different_registries_do_not_share_cache(): void
73+
{
74+
$schema = <<<EOXML
75+
<complexType name="testType">
76+
<sequence>
77+
<element name="value" type="xsd:string"/>
78+
</sequence>
79+
</complexType>
80+
EOXML;
81+
82+
$metadata1 = self::createMetadataFromWsdl($schema, 'type="tns:testType"');
83+
$metadata2 = self::createMetadataFromWsdl($schema, 'type="tns:testType"');
84+
85+
$context1 = self::createContextFromMetadata($metadata1, 'testType');
86+
$context2 = self::createContextFromMetadata($metadata2, 'testType');
87+
88+
// Different registries
89+
static::assertNotSame($context1->registry, $context2->registry);
90+
91+
$element = Element::fromString(
92+
'<testParam xsi:type="tns:testType" xmlns:tns="https://test" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">'
93+
. '<value xsi:type="xsd:string">test</value>'
94+
. '</testParam>'
95+
);
96+
97+
$encoder1 = $context1->registry->detectEncoderForContext($context1);
98+
$encoder2 = $context2->registry->detectEncoderForContext($context2);
99+
100+
$result1 = $encoder1->iso($context1)->from($element);
101+
$result2 = $encoder2->iso($context2)->from($element);
102+
103+
static::assertSame('test', $result1->value);
104+
static::assertSame('test', $result2->value);
105+
}
106+
107+
/**
108+
* Same xsi:type used as both a list element and a non-list element.
109+
*/
110+
public function test_same_xsi_type_with_list_and_non_list_decodes_correctly(): void
111+
{
112+
$schema = <<<EOXML
113+
<complexType name="testType">
114+
<sequence>
115+
<element name="single" type="xsd:string"/>
116+
<element name="multi" type="xsd:string" maxOccurs="unbounded"/>
117+
</sequence>
118+
</complexType>
119+
EOXML;
120+
121+
$metadata = self::createMetadataFromWsdl($schema, 'type="tns:testType"');
122+
$context = self::createContextFromMetadata($metadata, 'testType');
123+
$encoder = $context->registry->detectEncoderForContext($context);
124+
125+
$result = $encoder->iso($context)->from(
126+
Element::fromString(
127+
'<testParam xsi:type="tns:testType" xmlns:tns="https://test" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">'
128+
. '<single xsi:type="xsd:string">one</single>'
129+
. '<multi xsi:type="xsd:string">a</multi>'
130+
. '<multi xsi:type="xsd:string">b</multi>'
131+
. '</testParam>'
132+
)
133+
);
134+
135+
static::assertIsObject($result);
136+
static::assertSame('one', $result->single);
137+
static::assertSame(['a', 'b'], $result->multi);
138+
}
139+
}

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