fix: include more info for retry token bucket capacity errors

.changes/ab40d3c7-4701-47ee-87f5-985d68db8b7f.json

@@ -0,0 +1,8 @@
+{
+    "id": "ab40d3c7-4701-47ee-87f5-985d68db8b7f",
+    "type": "bugfix",
+    "description": "Include more information when retry strategy halts early due to token bucket capacity errors",
+    "issues": [
+        "awslabs/aws-sdk-kotlin#1321"
+    ]
+}

codegen/aws-sdk-codegen/src/main/kotlin/aws/sdk/kotlin/codegen/customization/s3/S3ErrorMetadataIntegration.kt

@@ -48,16 +48,8 @@ class S3ErrorMetadataIntegration : KotlinIntegration {
         }
     }
 
-    // SectionWriter to override the default sdkErrorMetadata and displayMetadata for S3's version
+    // SectionWriter to override the default sdkErrorMetadata for S3's version
     private val addSdkErrorMetadataWriter = AppendingSectionWriter { writer ->
-        writer
-            .write("override val sdkErrorMetadata: S3ErrorMetadata = S3ErrorMetadata()")
-            .write("")
-            .withBlock("override val displayMetadata: List<String>", "") {
-                withBlock("get() =", "") {
-                    write("super.displayMetadata + ")
-                    write("""listOfNotNull(sdkErrorMetadata.requestId2?.let { "Extended request ID: ${'$'}it" })""")
-                }
-            }
+        writer.write("override val sdkErrorMetadata: S3ErrorMetadata = S3ErrorMetadata()")
     }
 }

services/s3/common/src/aws/sdk/kotlin/services/s3/internal/S3ErrorMetadata.kt

@@ -7,9 +7,12 @@ package aws.sdk.kotlin.services.s3.internal
 import aws.sdk.kotlin.runtime.AwsServiceException
 import aws.sdk.kotlin.services.s3.model.S3ErrorMetadata
 import aws.sdk.kotlin.services.s3.model.S3Exception
+import aws.smithy.kotlin.runtime.ClientErrorContext
+import aws.smithy.kotlin.runtime.ErrorMetadata
 import aws.smithy.kotlin.runtime.ServiceErrorMetadata
 import aws.smithy.kotlin.runtime.awsprotocol.AwsErrorDetails
 import aws.smithy.kotlin.runtime.awsprotocol.setAseErrorMetadata
+import aws.smithy.kotlin.runtime.collections.appendValue
 import aws.smithy.kotlin.runtime.collections.setIfValueNotNull
 import aws.smithy.kotlin.runtime.http.response.HttpResponse
 import aws.smithy.kotlin.runtime.serde.xml.data
@@ -33,12 +36,22 @@ internal data class S3ErrorDetails(
  */
 internal fun setS3ErrorMetadata(exception: Any, response: HttpResponse, errorDetails: S3ErrorDetails?) {
     setAseErrorMetadata(exception, response, errorDetails)
+
     if (exception is AwsServiceException) {
         exception.sdkErrorMetadata.attributes.setIfValueNotNull(ServiceErrorMetadata.RequestId, errorDetails?.requestId)
     }
+
     if (exception is S3Exception) {
-        val requestId2 = errorDetails?.requestId2 ?: response.headers[X_AMZN_REQUEST_ID_2_HEADER]
-        exception.sdkErrorMetadata.attributes.setIfValueNotNull(S3ErrorMetadata.RequestId2, requestId2)
+        (errorDetails?.requestId2 ?: response.headers[X_AMZN_REQUEST_ID_2_HEADER])?.let { requestId2 ->
+            with(exception.sdkErrorMetadata) {
+                attributes.setIfValueNotNull(S3ErrorMetadata.RequestId2, requestId2)
+
+                attributes.appendValue(
+                    ErrorMetadata.ClientContext,
+                    ClientErrorContext("Extended request ID", requestId2),
+                )
+            }
+        }
     }
 }