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113
...k-codegen/src/main/kotlin/aws/sdk/kotlin/codegen/customization/s3/S3ExpiresIntegration.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| /* | ||
| * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
| package aws.sdk.kotlin.codegen.customization.s3 | ||
|
|
||
| import software.amazon.smithy.kotlin.codegen.KotlinSettings | ||
| import software.amazon.smithy.kotlin.codegen.core.KotlinWriter | ||
| import software.amazon.smithy.kotlin.codegen.integration.KotlinIntegration | ||
| import software.amazon.smithy.kotlin.codegen.model.* | ||
| import software.amazon.smithy.kotlin.codegen.rendering.protocol.ProtocolGenerator | ||
| import software.amazon.smithy.kotlin.codegen.rendering.protocol.ProtocolMiddleware | ||
| import software.amazon.smithy.model.Model | ||
| import software.amazon.smithy.model.shapes.* | ||
| import software.amazon.smithy.model.traits.DeprecatedTrait | ||
| import software.amazon.smithy.model.traits.DocumentationTrait | ||
| import software.amazon.smithy.model.traits.HttpHeaderTrait | ||
| import software.amazon.smithy.model.traits.OutputTrait | ||
| import software.amazon.smithy.model.transform.ModelTransformer | ||
| import kotlin.streams.asSequence | ||
|
|
||
| /** | ||
| * An integration used to customize behavior around S3's members named `Expires`. | ||
| */ | ||
| class S3ExpiresIntegration : KotlinIntegration { | ||
| override fun enabledForService(model: Model, settings: KotlinSettings) = | ||
| model.expectShape<ServiceShape>(settings.service).isS3 && model.shapes<OperationShape>().any { it.hasExpiresMember(model) } | ||
|
|
||
| override fun preprocessModel(model: Model, settings: KotlinSettings): Model { | ||
| val transformer = ModelTransformer.create() | ||
|
|
||
| // Ensure all `Expires` shapes are timestamps | ||
| val expiresShapeTimestampMap = model.shapes() | ||
| .asSequence() | ||
| .mapNotNull { shape -> | ||
| shape.members() | ||
| .singleOrNull { member -> member.memberName.equals("Expires", ignoreCase = true) } | ||
| ?.target | ||
| } | ||
| .associateWith { ShapeType.TIMESTAMP } | ||
|
|
||
| var transformedModel = transformer.changeShapeType(model, expiresShapeTimestampMap) | ||
|
|
||
| // Add an `ExpiresString` string shape to the model | ||
| val expiresString = StringShape.builder() | ||
| expiresString.id("aws.sdk.kotlin.s3.synthetic#ExpiresString") | ||
| transformedModel = transformedModel.toBuilder().addShape(expiresString.build()).build() | ||
|
|
||
| // For output shapes only, deprecate `Expires` and add a synthetic member that targets `ExpiresString` | ||
| return transformer.mapShapes(transformedModel) { shape -> | ||
| if (shape.hasTrait<OutputTrait>() && shape.memberNames.any { it.equals("Expires", ignoreCase = true) }) { | ||
| val builder = (shape as StructureShape).toBuilder() | ||
|
|
||
| // Deprecate `Expires` | ||
| val expiresMember = shape.members().single { it.memberName.equals("Expires", ignoreCase = true) } | ||
|
|
||
| builder.removeMember(expiresMember.memberName) | ||
| val deprecatedTrait = DeprecatedTrait.builder() | ||
| .message("Please use `expiresString` which contains the raw, unparsed value of this field.") | ||
| .build() | ||
|
|
||
| builder.addMember( | ||
| expiresMember.toBuilder() | ||
| .addTrait(deprecatedTrait) | ||
| .build(), | ||
| ) | ||
|
|
||
| // Add a synthetic member targeting `ExpiresString` | ||
| val expiresStringMember = MemberShape.builder() | ||
| expiresStringMember.target(expiresString.id) | ||
| expiresStringMember.id(expiresMember.id.toString() + "String") // i.e. com.amazonaws.s3.<MEMBER_NAME>$ExpiresString | ||
| expiresStringMember.addTrait(HttpHeaderTrait("ExpiresString")) // Add HttpHeaderTrait to ensure the field is deserialized | ||
| expiresMember.getTrait<DocumentationTrait>()?.let { | ||
| expiresStringMember.addTrait(it) // Copy documentation from `Expires` | ||
| } | ||
| builder.addMember(expiresStringMember.build()) | ||
| builder.build() | ||
| } else { | ||
| shape | ||
| } | ||
| } | ||
| } | ||
|
|
||
| override fun customizeMiddleware( | ||
| ctx: ProtocolGenerator.GenerationContext, | ||
| resolved: List<ProtocolMiddleware>, | ||
| ): List<ProtocolMiddleware> = resolved + applyExpiresFieldInterceptor | ||
|
|
||
| internal val applyExpiresFieldInterceptor = object : ProtocolMiddleware { | ||
| override val name: String = "ExpiresFieldInterceptor" | ||
|
|
||
| override fun isEnabledFor(ctx: ProtocolGenerator.GenerationContext, op: OperationShape): Boolean = | ||
| ctx.model.expectShape<ServiceShape>(ctx.settings.service).isS3 && op.hasExpiresMember(ctx.model) | ||
|
|
||
| override fun render(ctx: ProtocolGenerator.GenerationContext, op: OperationShape, writer: KotlinWriter) { | ||
| val interceptorSymbol = buildSymbol { | ||
| name = "ExpiresFieldInterceptor" | ||
| namespace = ctx.settings.pkg.subpackage("internal") | ||
| } | ||
|
|
||
| writer.write("op.interceptors.add(#T)", interceptorSymbol) | ||
| } | ||
| } | ||
|
|
||
| private fun OperationShape.hasExpiresMember(model: Model): Boolean { | ||
| val input = model.expectShape(this.inputShape) | ||
| val output = model.expectShape(this.outputShape) | ||
|
|
||
| return (input.memberNames + output.memberNames).any { | ||
| it.equals("Expires", ignoreCase = true) | ||
| } | ||
| } | ||
| } |
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