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{ | ||
"id": "14eca09d-0ee6-45f3-a758-5e5b2ac471f0", | ||
"type": "feature", | ||
"description": "Customize S3's `Expires` field, including adding a new `ExpiresString` field for output types." | ||
} |
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{ | ||
"id": "7699105e-2f52-4239-abff-631aa6dba005", | ||
"type": "bugfix", | ||
"description": "Service client based identity providers now respect AWS_ENDPOINT_URL_SERVICE environment variables", | ||
"issues": [ | ||
"awslabs/aws-sdk-kotlin#1210" | ||
] | ||
} |
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113 changes: 113 additions & 0 deletions
113
...k-codegen/src/main/kotlin/aws/sdk/kotlin/codegen/customization/s3/S3ExpiresIntegration.kt
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/* | ||
* 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 | ||
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/** | ||
* 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) } | ||
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override fun preprocessModel(model: Model, settings: KotlinSettings): Model { | ||
val transformer = ModelTransformer.create() | ||
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// 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 } | ||
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var transformedModel = transformer.changeShapeType(model, expiresShapeTimestampMap) | ||
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// 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() | ||
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// 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() | ||
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// Deprecate `Expires` | ||
val expiresMember = shape.members().single { it.memberName.equals("Expires", ignoreCase = true) } | ||
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builder.removeMember(expiresMember.memberName) | ||
val deprecatedTrait = DeprecatedTrait.builder() | ||
.message("Please use `expiresString` which contains the raw, unparsed value of this field.") | ||
.build() | ||
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builder.addMember( | ||
expiresMember.toBuilder() | ||
.addTrait(deprecatedTrait) | ||
.build(), | ||
) | ||
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// 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 | ||
} | ||
} | ||
} | ||
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override fun customizeMiddleware( | ||
ctx: ProtocolGenerator.GenerationContext, | ||
resolved: List<ProtocolMiddleware>, | ||
): List<ProtocolMiddleware> = resolved + applyExpiresFieldInterceptor | ||
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internal val applyExpiresFieldInterceptor = object : ProtocolMiddleware { | ||
override val name: String = "ExpiresFieldInterceptor" | ||
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override fun isEnabledFor(ctx: ProtocolGenerator.GenerationContext, op: OperationShape): Boolean = | ||
ctx.model.expectShape<ServiceShape>(ctx.settings.service).isS3 && op.hasExpiresMember(ctx.model) | ||
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override fun render(ctx: ProtocolGenerator.GenerationContext, op: OperationShape, writer: KotlinWriter) { | ||
val interceptorSymbol = buildSymbol { | ||
name = "ExpiresFieldInterceptor" | ||
namespace = ctx.settings.pkg.subpackage("internal") | ||
} | ||
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writer.write("op.interceptors.add(#T)", interceptorSymbol) | ||
} | ||
} | ||
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private fun OperationShape.hasExpiresMember(model: Model): Boolean { | ||
val input = model.expectShape(this.inputShape) | ||
val output = model.expectShape(this.outputShape) | ||
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return (input.memberNames + output.memberNames).any { | ||
it.equals("Expires", ignoreCase = true) | ||
} | ||
} | ||
} |
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