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.core; 17 18 import software.amazon.awssdk.annotations.SdkInternalApi; 19 import software.amazon.awssdk.core.interceptor.ExecutionAttribute; 20 import software.amazon.awssdk.core.internal.signer.SigningMethod; 21 22 /** 23 * Defines all the constants that are used while adding and validating Http checksum for an operation. 24 */ 25 @SdkInternalApi 26 public final class HttpChecksumConstant { 27 28 public static final String HTTP_CHECKSUM_HEADER_PREFIX = "x-amz-checksum"; 29 public static final String X_AMZ_TRAILER = "x-amz-trailer"; 30 public static final String CONTENT_SHA_256_FOR_UNSIGNED_TRAILER = "STREAMING-UNSIGNED-PAYLOAD-TRAILER"; 31 32 public static final String AWS_CHUNKED_HEADER = "aws-chunked"; 33 34 public static final ExecutionAttribute<String> HTTP_CHECKSUM_VALUE = 35 new ExecutionAttribute<>("HttpChecksumValue"); 36 37 public static final ExecutionAttribute<SigningMethod> SIGNING_METHOD = 38 new ExecutionAttribute<>("SigningMethod"); 39 40 public static final String HEADER_FOR_TRAILER_REFERENCE = "x-amz-trailer"; 41 42 /** 43 * Default chunk size for Async trailer based checksum data transfer* 44 */ 45 public static final int DEFAULT_ASYNC_CHUNK_SIZE = 16 * 1024; 46 HttpChecksumConstant()47 private HttpChecksumConstant() { 48 } 49 } 50