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Merge pull request #1018 from k163377/upgrade-value-class-perf
Use `MethodHandle` in processing related to `value class`
2 parents 39469a1 + d6f64c8 commit d7f228e

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-99
lines changed

13 files changed

+630
-99
lines changed

‎pom.xml‎

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@@ -255,6 +255,22 @@
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<exclude>
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com.fasterxml.jackson.module.kotlin.MissingKotlinParameterException#MissingKotlinParameterException(kotlin.reflect.KParameter,java.io.Closeable,java.lang.String)
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</exclude>
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<exclude>
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com.fasterxml.jackson.module.kotlin.WrapsNullableValueClassBoxDeserializer
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</exclude>
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<exclude>com.fasterxml.jackson.module.kotlin.ValueClassUnboxKeySerializer</exclude>
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<exclude>com.fasterxml.jackson.module.kotlin.KotlinKeySerializersKt</exclude>
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<exclude>com.fasterxml.jackson.module.kotlin.ValueClassSerializer</exclude>
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<!-- internal -->
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<exclude>
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com.fasterxml.jackson.module.kotlin.KotlinKeySerializers#KotlinKeySerializers()
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</exclude>
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<exclude>
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com.fasterxml.jackson.module.kotlin.KotlinSerializers#KotlinSerializers()
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</exclude>
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<exclude>com.fasterxml.jackson.module.kotlin.ValueClassStaticJsonKeySerializer</exclude>
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<exclude>com.fasterxml.jackson.module.kotlin.ValueClassBoxConverter</exclude>
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<exclude>com.fasterxml.jackson.module.kotlin.ValueClassKeyDeserializer</exclude>
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</excludes>
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</parameter>
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</configuration>

‎release-notes/CREDITS-2.x‎

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@@ -18,6 +18,7 @@ Contributors:
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# 2.20.0 (not yet released)
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2020
WrongWrong (@k163377)
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* #1018: Use MethodHandle in processing related to value class
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* #969: Cleanup of deprecated contents
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* #967: Update settings for 2.20
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‎release-notes/VERSION-2.x‎

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@@ -17,7 +17,12 @@ Co-maintainers:
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------------------------------------------------------------------------
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2.20.0 (not yet released)
20-
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#1018: Improved handling of `value class` has improved performance for both serialization and deserialization.
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In particular, for serialization, proper caching has improved throughput by a factor of 2 or more in the general cases.
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Also, replacing function execution by reflection with `MethodHandle` improved throughput by several percent for both serialization and deserialization.
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In cases where the number of properties of a `value class` in the processing target is large, there is a possibility to obtain a larger improvement.
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Please note that this modification causes a destructive change in that exceptions thrown during deserialization of
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`value class` are no longer wrapped in an `InvocationTargetException`.
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#969: Deprecated content has been cleaned up with the version upgrade.
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#967: Kotlin has been upgraded to 2.0.21.
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- Generate SBOMs [JSTEP-14]

‎src/main/kotlin/com/fasterxml/jackson/module/kotlin/Converters.kt‎

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@@ -4,9 +4,13 @@ import com.fasterxml.jackson.databind.JavaType
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import com.fasterxml.jackson.databind.deser.std.StdDelegatingDeserializer
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import com.fasterxml.jackson.databind.ser.std.StdDelegatingSerializer
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import com.fasterxml.jackson.databind.type.TypeFactory
7-
import com.fasterxml.jackson.databind.util.ClassUtil
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import com.fasterxml.jackson.databind.util.StdConverter
9-
import kotlin.reflect.KClass
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import java.lang.invoke.MethodHandle
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import java.lang.invoke.MethodHandles
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import java.lang.invoke.MethodType
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import java.lang.reflect.Method
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import java.lang.reflect.Type
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import java.util.UUID
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import kotlin.time.toJavaDuration
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import kotlin.time.toKotlinDuration
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import java.time.Duration as JavaDuration
@@ -23,7 +27,7 @@ internal class SequenceToIteratorConverter(private val input: JavaType) : StdCon
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}
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internal object KotlinDurationValueToJavaDurationConverter : StdConverter<Long, JavaDuration>() {
26-
private val boxConverter by lazy { ValueClassBoxConverter(Long::class.java, KotlinDuration::class) }
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private val boxConverter by lazy { LongValueClassBoxConverter(KotlinDuration::class.java) }
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override fun convert(value: Long): JavaDuration = KotlinToJavaDurationConverter.convert(boxConverter.convert(value))
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}
@@ -45,18 +49,163 @@ internal object JavaToKotlinDurationConverter : StdConverter<JavaDuration, Kotli
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}
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}
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48-
// S is nullable because value corresponds to a nullable value class
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// @see KotlinNamesAnnotationIntrospector.findNullSerializer
50-
internal class ValueClassBoxConverter<S : Any?, D : Any>(
51-
unboxedClass: Class<S>,
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val boxedClass: KClass<D>
53-
) : StdConverter<S, D>() {
54-
private val boxMethod = boxedClass.java.getDeclaredMethod("box-impl", unboxedClass).apply {
55-
ClassUtil.checkAndFixAccess(this, false)
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internal sealed class ValueClassBoxConverter<S : Any?, D : Any> : StdConverter<S, D>() {
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abstract val boxedClass: Class<D>
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abstract val boxHandle: MethodHandle
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protected fun rawBoxHandle(
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unboxedClass: Class<*>,
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): MethodHandle = MethodHandles.lookup().findStatic(
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boxedClass,
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"box-impl",
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MethodType.methodType(boxedClass, unboxedClass),
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)
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val delegatingSerializer: StdDelegatingSerializer by lazy { StdDelegatingSerializer(this) }
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companion object {
67+
fun create(
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unboxedClass: Class<*>,
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valueClass: Class<*>,
70+
): ValueClassBoxConverter<*, *> = when (unboxedClass) {
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Int::class.java -> IntValueClassBoxConverter(valueClass)
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Long::class.java -> LongValueClassBoxConverter(valueClass)
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String::class.java -> StringValueClassBoxConverter(valueClass)
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UUID::class.java -> JavaUuidValueClassBoxConverter(valueClass)
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else -> GenericValueClassBoxConverter(unboxedClass, valueClass)
76+
}
5677
}
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79+
// If the wrapped type is explicitly specified, it is inherited for the sake of distinction
80+
internal sealed class Specified<S : Any?, D : Any> : ValueClassBoxConverter<S, D>()
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}
82+
83+
// region: Converters for common classes as wrapped values, add as needed.
84+
internal class IntValueClassBoxConverter<D : Any>(
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override val boxedClass: Class<D>,
86+
) : ValueClassBoxConverter.Specified<Int, D>() {
87+
override val boxHandle: MethodHandle = rawBoxHandle(Int::class.java).asType(INT_TO_ANY_METHOD_TYPE)
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@Suppress("UNCHECKED_CAST")
90+
override fun convert(value: Int): D = boxHandle.invokeExact(value) as D
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}
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93+
internal class LongValueClassBoxConverter<D : Any>(
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override val boxedClass: Class<D>,
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) : ValueClassBoxConverter.Specified<Long, D>() {
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override val boxHandle: MethodHandle = rawBoxHandle(Long::class.java).asType(LONG_TO_ANY_METHOD_TYPE)
97+
98+
@Suppress("UNCHECKED_CAST")
99+
override fun convert(value: Long): D = boxHandle.invokeExact(value) as D
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}
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internal class StringValueClassBoxConverter<D : Any>(
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override val boxedClass: Class<D>,
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) : ValueClassBoxConverter.Specified<String?, D>() {
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override val boxHandle: MethodHandle = rawBoxHandle(String::class.java).asType(STRING_TO_ANY_METHOD_TYPE)
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@Suppress("UNCHECKED_CAST")
108+
override fun convert(value: String?): D = boxHandle.invokeExact(value) as D
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}
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internal class JavaUuidValueClassBoxConverter<D : Any>(
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override val boxedClass: Class<D>,
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) : ValueClassBoxConverter.Specified<UUID?, D>() {
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override val boxHandle: MethodHandle = rawBoxHandle(UUID::class.java).asType(JAVA_UUID_TO_ANY_METHOD_TYPE)
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@Suppress("UNCHECKED_CAST")
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override fun convert(value: UUID?): D = boxHandle.invokeExact(value) as D
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}
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// endregion
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/**
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* A converter that only performs box processing for the value class.
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* Note that constructor-impl is not called.
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* @param S is nullable because value corresponds to a nullable value class.
125+
* see [io.github.projectmapk.jackson.module.kogera.annotationIntrospector.KotlinFallbackAnnotationIntrospector.findNullSerializer]
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*/
127+
internal class GenericValueClassBoxConverter<S : Any?, D : Any>(
128+
unboxedClass: Class<S>,
129+
override val boxedClass: Class<D>,
130+
) : ValueClassBoxConverter<S, D>() {
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override val boxHandle: MethodHandle = rawBoxHandle(unboxedClass).asType(ANY_TO_ANY_METHOD_TYPE)
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@Suppress("UNCHECKED_CAST")
59-
override fun convert(value: S): D = boxMethod.invoke(null, value) as D
134+
override fun convert(value: S): D = boxHandle.invokeExact(value) as D
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}
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internal sealed class ValueClassUnboxConverter<S : Any, D : Any?> : StdConverter<S, D>() {
138+
abstract val valueClass: Class<S>
139+
abstract val unboxedType: Type
140+
abstract val unboxHandle: MethodHandle
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final override fun getInputType(typeFactory: TypeFactory): JavaType = typeFactory.constructType(valueClass)
143+
final override fun getOutputType(typeFactory: TypeFactory): JavaType = typeFactory.constructType(unboxedType)
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61145
val delegatingSerializer: StdDelegatingSerializer by lazy { StdDelegatingSerializer(this) }
146+
147+
companion object {
148+
fun create(valueClass: Class<*>): ValueClassUnboxConverter<*, *> {
149+
val unboxMethod = valueClass.getDeclaredMethod("unbox-impl")
150+
val unboxedType = unboxMethod.genericReturnType
151+
152+
return when (unboxedType) {
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Int::class.java -> IntValueClassUnboxConverter(valueClass, unboxMethod)
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Long::class.java -> LongValueClassUnboxConverter(valueClass, unboxMethod)
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String::class.java -> StringValueClassUnboxConverter(valueClass, unboxMethod)
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UUID::class.java -> JavaUuidValueClassUnboxConverter(valueClass, unboxMethod)
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else -> GenericValueClassUnboxConverter(valueClass, unboxedType, unboxMethod)
158+
}
159+
}
160+
}
161+
}
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163+
internal class IntValueClassUnboxConverter<T : Any>(
164+
override val valueClass: Class<T>,
165+
unboxMethod: Method,
166+
) : ValueClassUnboxConverter<T, Int>() {
167+
override val unboxedType: Type get() = Int::class.java
168+
override val unboxHandle: MethodHandle = unreflectAsType(unboxMethod, ANY_TO_INT_METHOD_TYPE)
169+
170+
override fun convert(value: T): Int = unboxHandle.invokeExact(value) as Int
171+
}
172+
173+
internal class LongValueClassUnboxConverter<T : Any>(
174+
override val valueClass: Class<T>,
175+
unboxMethod: Method,
176+
) : ValueClassUnboxConverter<T, Long>() {
177+
override val unboxedType: Type get() = Long::class.java
178+
override val unboxHandle: MethodHandle = unreflectAsType(unboxMethod, ANY_TO_LONG_METHOD_TYPE)
179+
180+
override fun convert(value: T): Long = unboxHandle.invokeExact(value) as Long
181+
}
182+
183+
internal class StringValueClassUnboxConverter<T : Any>(
184+
override val valueClass: Class<T>,
185+
unboxMethod: Method,
186+
) : ValueClassUnboxConverter<T, String?>() {
187+
override val unboxedType: Type get() = String::class.java
188+
override val unboxHandle: MethodHandle = unreflectAsType(unboxMethod, ANY_TO_STRING_METHOD_TYPE)
189+
190+
override fun convert(value: T): String? = unboxHandle.invokeExact(value) as String?
191+
}
192+
193+
internal class JavaUuidValueClassUnboxConverter<T : Any>(
194+
override val valueClass: Class<T>,
195+
unboxMethod: Method,
196+
) : ValueClassUnboxConverter<T, UUID?>() {
197+
override val unboxedType: Type get() = UUID::class.java
198+
override val unboxHandle: MethodHandle = unreflectAsType(unboxMethod, ANY_TO_JAVA_UUID_METHOD_TYPE)
199+
200+
override fun convert(value: T): UUID? = unboxHandle.invokeExact(value) as UUID?
201+
}
202+
203+
internal class GenericValueClassUnboxConverter<T : Any>(
204+
override val valueClass: Class<T>,
205+
override val unboxedType: Type,
206+
unboxMethod: Method,
207+
) : ValueClassUnboxConverter<T, Any?>() {
208+
override val unboxHandle: MethodHandle = unreflectAsType(unboxMethod, ANY_TO_ANY_METHOD_TYPE)
209+
210+
override fun convert(value: T): Any? = unboxHandle.invokeExact(value)
62211
}

‎src/main/kotlin/com/fasterxml/jackson/module/kotlin/InternalCommons.kt‎

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@@ -2,7 +2,11 @@ package com.fasterxml.jackson.module.kotlin
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33
import com.fasterxml.jackson.annotation.JsonCreator
44
import com.fasterxml.jackson.databind.JsonMappingException
5+
import java.lang.invoke.MethodHandle
6+
import java.lang.invoke.MethodHandles
7+
import java.lang.invoke.MethodType
58
import java.lang.reflect.AnnotatedElement
9+
import java.lang.reflect.Method
610
import java.util.*
711
import kotlin.reflect.KClass
812
import kotlin.reflect.KType
@@ -46,3 +50,16 @@ internal fun AnnotatedElement.hasCreatorAnnotation(): Boolean = getAnnotation(Js
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// Determine if the unbox result of value class is nullable
4751
internal fun KClass<*>.wrapsNullable(): Boolean =
4852
this.memberProperties.first { it.javaField != null }.returnType.isMarkedNullable
53+
54+
internal val ANY_TO_ANY_METHOD_TYPE by lazy {MethodType.methodType(Any::class.java, Any::class.java) }
55+
internal val ANY_TO_INT_METHOD_TYPE by lazy {MethodType.methodType(Int::class.java, Any::class.java) }
56+
internal val ANY_TO_LONG_METHOD_TYPE by lazy {MethodType.methodType(Long::class.java, Any::class.java) }
57+
internal val ANY_TO_STRING_METHOD_TYPE by lazy {MethodType.methodType(String::class.java, Any::class.java) }
58+
internal val ANY_TO_JAVA_UUID_METHOD_TYPE by lazy {MethodType.methodType(UUID::class.java, Any::class.java) }
59+
internal val INT_TO_ANY_METHOD_TYPE by lazy {MethodType.methodType(Any::class.java, Int::class.java) }
60+
internal val LONG_TO_ANY_METHOD_TYPE by lazy {MethodType.methodType(Any::class.java, Long::class.java) }
61+
internal val STRING_TO_ANY_METHOD_TYPE by lazy {MethodType.methodType(Any::class.java, String::class.java) }
62+
internal val JAVA_UUID_TO_ANY_METHOD_TYPE by lazy {MethodType.methodType(Any::class.java, UUID::class.java) }
63+
64+
internal fun unreflect(method: Method): MethodHandle = MethodHandles.lookup().unreflect(method)
65+
internal fun unreflectAsType(method: Method, type: MethodType): MethodHandle = unreflect(method).asType(type)

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