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* Server event streams * Rename EventStreamInput to EventStreamSender * Make event stream errors optional * Pokemon service model updated * Pokemon server event handler * Pokemon client to test event streams * EventStreamDecorator to make optional using SigV4 signing Closes: #1157 Signed-off-by: Daniele Ahmed <ahmeddan@amazon.de>
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.../main/kotlin/software/amazon/smithy/rust/codegen/smithy/customize/EventStreamDecorator.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| /* | ||
| * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
|
|
||
| package software.amazon.smithy.rust.codegen.smithy.customize | ||
|
|
||
| import software.amazon.smithy.model.shapes.OperationShape | ||
| import software.amazon.smithy.rust.codegen.rustlang.CargoDependency | ||
| import software.amazon.smithy.rust.codegen.rustlang.Writable | ||
| import software.amazon.smithy.rust.codegen.rustlang.rustTemplate | ||
| import software.amazon.smithy.rust.codegen.rustlang.writable | ||
| import software.amazon.smithy.rust.codegen.smithy.CodegenContext | ||
| import software.amazon.smithy.rust.codegen.smithy.RuntimeConfig | ||
| import software.amazon.smithy.rust.codegen.smithy.RuntimeType | ||
| import software.amazon.smithy.rust.codegen.smithy.generators.config.ConfigCustomization | ||
| import software.amazon.smithy.rust.codegen.smithy.generators.config.ServiceConfig | ||
| import software.amazon.smithy.rust.codegen.util.hasEventStreamOperations | ||
|
|
||
| /** | ||
| * The EventStreamDecorator: | ||
| * - adds a `new_event_stream_signer()` method to `config` to create an Event Stream NoOp signer | ||
| * - can be customized by subclassing, see SigV4SigningDecorator | ||
| */ | ||
| open class EventStreamDecorator( | ||
| private val decorators: List<EventStreamDecorator> | ||
| ) : RustCodegenDecorator { | ||
| override val name: String = "EventStreamDecorator" | ||
| override val order: Byte = 0 | ||
|
|
||
| open fun applies(codegenContext: CodegenContext): Boolean = true | ||
|
|
||
| override fun configCustomizations( | ||
| codegenContext: CodegenContext, | ||
| baseCustomizations: List<ConfigCustomization> | ||
| ): List<ConfigCustomization> { | ||
| decorators.forEach { | ||
| if (it.applies(codegenContext)) return it.configCustomizations(codegenContext, baseCustomizations) | ||
| } | ||
| return baseCustomizations + EventStreamSignConfig( | ||
| codegenContext.runtimeConfig, | ||
| codegenContext.serviceShape.hasEventStreamOperations(codegenContext.model), | ||
| ) | ||
| } | ||
|
|
||
| override fun operationCustomizations( | ||
| codegenContext: CodegenContext, | ||
| operation: OperationShape, | ||
| baseCustomizations: List<OperationCustomization> | ||
| ): List<OperationCustomization> { | ||
| decorators.forEach { | ||
| if (it.applies(codegenContext)) return it.operationCustomizations(codegenContext, operation, baseCustomizations) | ||
| } | ||
| return baseCustomizations | ||
| } | ||
| } | ||
|
|
||
| class EventStreamSignConfig( | ||
| runtimeConfig: RuntimeConfig, | ||
| private val serviceHasEventStream: Boolean, | ||
| ) : ConfigCustomization() { | ||
| private val smithyEventStream = CargoDependency.SmithyEventStream(runtimeConfig) | ||
| private val codegenScope = arrayOf( | ||
| "NoOpSigner" to RuntimeType("NoOpSigner", smithyEventStream, "aws_smithy_eventstream::frame"), | ||
| "SharedPropertyBag" to RuntimeType( | ||
| "SharedPropertyBag", | ||
| CargoDependency.SmithyHttp(runtimeConfig), | ||
| "aws_smithy_http::property_bag" | ||
| ) | ||
| ) | ||
|
|
||
| override fun section(section: ServiceConfig): Writable { | ||
| return when (section) { | ||
| is ServiceConfig.ConfigImpl -> writable { | ||
| if (serviceHasEventStream) { | ||
| rustTemplate( | ||
| """ | ||
| /// Creates a new Event Stream `SignMessage` implementor. | ||
| pub fn new_event_stream_signer( | ||
| &self, | ||
| _properties: #{SharedPropertyBag} | ||
| ) -> #{NoOpSigner} { | ||
| #{NoOpSigner}{} | ||
| } | ||
| """, | ||
| *codegenScope | ||
| ) | ||
| } | ||
| } | ||
| else -> emptySection | ||
| } | ||
| } | ||
| } |
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