Add event-stream middleware if operation has eventstream input

Author: AllanZhengYP

smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/integration/EventStreamGenerator.java

@@ -111,7 +111,12 @@ public List<RuntimeClientPlugin> getClientPlugins() {
                                 RuntimeClientPlugin.Convention.HAS_CONFIG
                         )
                         .servicePredicate(EventStreamGenerator::hasEventStream)
-                        .build()
+                        .build(),
+                RuntimeClientPlugin.builder()
+                        .withConventions(
+                                TypeScriptDependency.MIDDLEWARE_EVENT_STREAM.dependency,
+                                "EventStream"
+                        ).operationPredicate((m, s, o) -> operationHasEventStreamInput(m, o)).build()
         );
     }
 

smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/integration/HttpBindingProtocolGenerator.java

@@ -51,7 +51,6 @@
 import software.amazon.smithy.model.shapes.StructureShape;
 import software.amazon.smithy.model.shapes.TimestampShape;
 import software.amazon.smithy.model.shapes.UnionShape;
-import software.amazon.smithy.model.traits.EndpointTrait;
 import software.amazon.smithy.model.traits.ErrorTrait;
 import software.amazon.smithy.model.traits.EventHeaderTrait;
 import software.amazon.smithy.model.traits.EventPayloadTrait;

smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/integration/HttpProtocolGeneratorUtils.java

@@ -24,14 +24,14 @@
 import software.amazon.smithy.codegen.core.Symbol;
 import software.amazon.smithy.codegen.core.SymbolProvider;
 import software.amazon.smithy.codegen.core.SymbolReference;
+import software.amazon.smithy.model.Model;
 import software.amazon.smithy.model.pattern.Pattern;
 import software.amazon.smithy.model.shapes.MemberShape;
 import software.amazon.smithy.model.shapes.OperationShape;
 import software.amazon.smithy.model.shapes.Shape;
 import software.amazon.smithy.model.shapes.StructureShape;
-import software.amazon.smithy.model.traits.EndpointTrait;
-import software.amazon.smithy.model.Model;
 import software.amazon.smithy.model.shapes.UnionShape;
+import software.amazon.smithy.model.traits.EndpointTrait;
 import software.amazon.smithy.model.traits.TimestampFormatTrait.Format;
 import software.amazon.smithy.typescript.codegen.TypeScriptDependency;
 import software.amazon.smithy.typescript.codegen.TypeScriptWriter;