1/* 2 * MinIO Go Library for Amazon S3 Compatible Cloud Storage 3 * Copyright 2015-2017 MinIO, Inc. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18package minio 19 20// Multipart upload defaults. 21 22// absMinPartSize - absolute minimum part size (5 MiB) below which 23// a part in a multipart upload may not be uploaded. 24const absMinPartSize = 1024 * 1024 * 5 25 26// minPartSize - minimum part size 16MiB per object after which 27// putObject behaves internally as multipart. 28const minPartSize = 1024 * 1024 * 16 29 30// maxPartsCount - maximum number of parts for a single multipart session. 31const maxPartsCount = 10000 32 33// maxPartSize - maximum part size 5GiB for a single multipart upload 34// operation. 35const maxPartSize = 1024 * 1024 * 1024 * 5 36 37// maxSinglePutObjectSize - maximum size 5GiB of object per PUT 38// operation. 39const maxSinglePutObjectSize = 1024 * 1024 * 1024 * 5 40 41// maxMultipartPutObjectSize - maximum size 5TiB of object for 42// Multipart operation. 43const maxMultipartPutObjectSize = 1024 * 1024 * 1024 * 1024 * 5 44 45// unsignedPayload - value to be set to X-Amz-Content-Sha256 header when 46// we don't want to sign the request payload 47const unsignedPayload = "UNSIGNED-PAYLOAD" 48 49// Total number of parallel workers used for multipart operation. 50const totalWorkers = 4 51 52// Signature related constants. 53const ( 54 signV4Algorithm = "AWS4-HMAC-SHA256" 55 iso8601DateFormat = "20060102T150405Z" 56) 57 58const ( 59 // Storage class header. 60 amzStorageClass = "X-Amz-Storage-Class" 61 62 // Website redirect location header 63 amzWebsiteRedirectLocation = "X-Amz-Website-Redirect-Location" 64 65 // Object Tagging headers 66 amzTaggingHeader = "X-Amz-Tagging" 67 amzTaggingHeaderDirective = "X-Amz-Tagging-Directive" 68 69 amzVersionID = "X-Amz-Version-Id" 70 amzTaggingCount = "X-Amz-Tagging-Count" 71 amzExpiration = "X-Amz-Expiration" 72 amzRestore = "X-Amz-Restore" 73 amzReplicationStatus = "X-Amz-Replication-Status" 74 amzDeleteMarker = "X-Amz-Delete-Marker" 75 76 // Object legal hold header 77 amzLegalHoldHeader = "X-Amz-Object-Lock-Legal-Hold" 78 79 // Object retention header 80 amzLockMode = "X-Amz-Object-Lock-Mode" 81 amzLockRetainUntil = "X-Amz-Object-Lock-Retain-Until-Date" 82 amzBypassGovernance = "X-Amz-Bypass-Governance-Retention" 83 84 // Replication status 85 amzBucketReplicationStatus = "X-Amz-Replication-Status" 86 // Minio specific Replication/lifecycle transition extension 87 minIOBucketSourceMTime = "X-Minio-Source-Mtime" 88 89 minIOBucketSourceETag = "X-Minio-Source-Etag" 90 minIOBucketReplicationDeleteMarker = "X-Minio-Source-DeleteMarker" 91 minIOBucketReplicationProxyRequest = "X-Minio-Source-Proxy-Request" 92 minIOBucketReplicationRequest = "X-Minio-Source-Replication-Request" 93 // Header indicates last tag update time on source 94 minIOBucketReplicationTaggingTimestamp = "X-Minio-Source-Replication-Tagging-Timestamp" 95 // Header indicates last retention update time on source 96 minIOBucketReplicationObjectRetentionTimestamp = "X-Minio-Source-Replication-Retention-Timestamp" 97 // Header indicates last legalhold update time on source 98 minIOBucketReplicationObjectLegalHoldTimestamp = "X-Minio-Source-Replication-LegalHold-Timestamp" 99 100 minIOForceDelete = "x-minio-force-delete" 101) 102