1 /* 2 * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"). 5 * You may not use this file except in compliance with the License. 6 * A copy of the License is located at 7 * 8 * http://aws.amazon.com/apache2.0 9 * 10 * or in the "license" file accompanying this file. This file is distributed 11 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 12 * express or implied. See the License for the specific language governing 13 * permissions and limitations under the License. 14 */ 15 16 package software.amazon.awssdk.services.s3.internal.handlers; 17 18 import software.amazon.awssdk.annotations.SdkInternalApi; 19 import software.amazon.awssdk.core.interceptor.Context; 20 import software.amazon.awssdk.core.interceptor.ExecutionAttributes; 21 import software.amazon.awssdk.core.interceptor.ExecutionInterceptor; 22 import software.amazon.awssdk.http.SdkHttpRequest; 23 import software.amazon.awssdk.services.s3.model.PutObjectRequest; 24 import software.amazon.awssdk.services.s3.model.UploadPartRequest; 25 26 /** 27 * Interceptor to add an 'Expect: 100-continue' header to the HTTP Request if it represents a PUT Object request. 28 */ 29 @SdkInternalApi 30 //TODO: This should be generalized for all streaming requests 31 public final class StreamingRequestInterceptor implements ExecutionInterceptor { 32 @Override modifyHttpRequest(Context.ModifyHttpRequest context, ExecutionAttributes executionAttributes)33 public SdkHttpRequest modifyHttpRequest(Context.ModifyHttpRequest context, 34 ExecutionAttributes executionAttributes) { 35 if (context.request() instanceof PutObjectRequest || context.request() instanceof UploadPartRequest) { 36 return context.httpRequest().toBuilder().putHeader("Expect", "100-continue").build(); 37 } 38 return context.httpRequest(); 39 } 40 } 41