/
s3.go
2205 lines (2083 loc) · 66.7 KB
/
s3.go
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// Package s3 provides an interface to Amazon S3 oject storage
package s3
// FIXME need to prevent anything but ListDir working for s3://
/*
Progress of port to aws-sdk
* Don't really need o.meta at all?
What happens if you CTRL-C a multipart upload
* get an incomplete upload
* disappears when you delete the bucket
*/
import (
"context"
"encoding/base64"
"encoding/hex"
"encoding/xml"
"fmt"
"io"
"net/http"
"net/url"
"path"
"regexp"
"strconv"
"strings"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/corehandlers"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/credentials/ec2rolecreds"
"github.com/aws/aws-sdk-go/aws/defaults"
"github.com/aws/aws-sdk-go/aws/ec2metadata"
"github.com/aws/aws-sdk-go/aws/request"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/s3"
"github.com/aws/aws-sdk-go/service/s3/s3manager"
"github.com/ncw/swift"
"github.com/pkg/errors"
"github.com/rclone/rclone/fs"
"github.com/rclone/rclone/fs/config/configmap"
"github.com/rclone/rclone/fs/config/configstruct"
"github.com/rclone/rclone/fs/encodings"
"github.com/rclone/rclone/fs/fserrors"
"github.com/rclone/rclone/fs/fshttp"
"github.com/rclone/rclone/fs/hash"
"github.com/rclone/rclone/fs/walk"
"github.com/rclone/rclone/lib/bucket"
"github.com/rclone/rclone/lib/pacer"
"github.com/rclone/rclone/lib/rest"
)
const enc = encodings.S3
// Register with Fs
func init() {
fs.Register(&fs.RegInfo{
Name: "s3",
Description: "Amazon S3 Compliant Storage Provider (AWS, Alibaba, Ceph, Digital Ocean, Dreamhost, IBM COS, Minio, etc)",
NewFs: NewFs,
Options: []fs.Option{{
Name: fs.ConfigProvider,
Help: "Choose your S3 provider.",
Examples: []fs.OptionExample{{
Value: "AWS",
Help: "Amazon Web Services (AWS) S3",
}, {
Value: "Alibaba",
Help: "Alibaba Cloud Object Storage System (OSS) formerly Aliyun",
}, {
Value: "Ceph",
Help: "Ceph Object Storage",
}, {
Value: "DigitalOcean",
Help: "Digital Ocean Spaces",
}, {
Value: "Dreamhost",
Help: "Dreamhost DreamObjects",
}, {
Value: "IBMCOS",
Help: "IBM COS S3",
}, {
Value: "Minio",
Help: "Minio Object Storage",
}, {
Value: "Netease",
Help: "Netease Object Storage (NOS)",
}, {
Value: "Wasabi",
Help: "Wasabi Object Storage",
}, {
Value: "Other",
Help: "Any other S3 compatible provider",
}},
}, {
Name: "env_auth",
Help: "Get AWS credentials from runtime (environment variables or EC2/ECS meta data if no env vars).\nOnly applies if access_key_id and secret_access_key is blank.",
Default: false,
Examples: []fs.OptionExample{{
Value: "false",
Help: "Enter AWS credentials in the next step",
}, {
Value: "true",
Help: "Get AWS credentials from the environment (env vars or IAM)",
}},
}, {
Name: "access_key_id",
Help: "AWS Access Key ID.\nLeave blank for anonymous access or runtime credentials.",
}, {
Name: "secret_access_key",
Help: "AWS Secret Access Key (password)\nLeave blank for anonymous access or runtime credentials.",
}, {
Name: "region",
Help: "Region to connect to.",
Provider: "AWS",
Examples: []fs.OptionExample{{
Value: "us-east-1",
Help: "The default endpoint - a good choice if you are unsure.\nUS Region, Northern Virginia or Pacific Northwest.\nLeave location constraint empty.",
}, {
Value: "us-east-2",
Help: "US East (Ohio) Region\nNeeds location constraint us-east-2.",
}, {
Value: "us-west-2",
Help: "US West (Oregon) Region\nNeeds location constraint us-west-2.",
}, {
Value: "us-west-1",
Help: "US West (Northern California) Region\nNeeds location constraint us-west-1.",
}, {
Value: "ca-central-1",
Help: "Canada (Central) Region\nNeeds location constraint ca-central-1.",
}, {
Value: "eu-west-1",
Help: "EU (Ireland) Region\nNeeds location constraint EU or eu-west-1.",
}, {
Value: "eu-west-2",
Help: "EU (London) Region\nNeeds location constraint eu-west-2.",
}, {
Value: "eu-north-1",
Help: "EU (Stockholm) Region\nNeeds location constraint eu-north-1.",
}, {
Value: "eu-central-1",
Help: "EU (Frankfurt) Region\nNeeds location constraint eu-central-1.",
}, {
Value: "ap-southeast-1",
Help: "Asia Pacific (Singapore) Region\nNeeds location constraint ap-southeast-1.",
}, {
Value: "ap-southeast-2",
Help: "Asia Pacific (Sydney) Region\nNeeds location constraint ap-southeast-2.",
}, {
Value: "ap-northeast-1",
Help: "Asia Pacific (Tokyo) Region\nNeeds location constraint ap-northeast-1.",
}, {
Value: "ap-northeast-2",
Help: "Asia Pacific (Seoul)\nNeeds location constraint ap-northeast-2.",
}, {
Value: "ap-south-1",
Help: "Asia Pacific (Mumbai)\nNeeds location constraint ap-south-1.",
}, {
Value: "sa-east-1",
Help: "South America (Sao Paulo) Region\nNeeds location constraint sa-east-1.",
}},
}, {
Name: "region",
Help: "Region to connect to.\nLeave blank if you are using an S3 clone and you don't have a region.",
Provider: "!AWS,Alibaba",
Examples: []fs.OptionExample{{
Value: "",
Help: "Use this if unsure. Will use v4 signatures and an empty region.",
}, {
Value: "other-v2-signature",
Help: "Use this only if v4 signatures don't work, eg pre Jewel/v10 CEPH.",
}},
}, {
Name: "endpoint",
Help: "Endpoint for S3 API.\nLeave blank if using AWS to use the default endpoint for the region.",
Provider: "AWS",
}, {
Name: "endpoint",
Help: "Endpoint for IBM COS S3 API.\nSpecify if using an IBM COS On Premise.",
Provider: "IBMCOS",
Examples: []fs.OptionExample{{
Value: "s3-api.us-geo.objectstorage.softlayer.net",
Help: "US Cross Region Endpoint",
}, {
Value: "s3-api.dal.us-geo.objectstorage.softlayer.net",
Help: "US Cross Region Dallas Endpoint",
}, {
Value: "s3-api.wdc-us-geo.objectstorage.softlayer.net",
Help: "US Cross Region Washington DC Endpoint",
}, {
Value: "s3-api.sjc-us-geo.objectstorage.softlayer.net",
Help: "US Cross Region San Jose Endpoint",
}, {
Value: "s3-api.us-geo.objectstorage.service.networklayer.com",
Help: "US Cross Region Private Endpoint",
}, {
Value: "s3-api.dal-us-geo.objectstorage.service.networklayer.com",
Help: "US Cross Region Dallas Private Endpoint",
}, {
Value: "s3-api.wdc-us-geo.objectstorage.service.networklayer.com",
Help: "US Cross Region Washington DC Private Endpoint",
}, {
Value: "s3-api.sjc-us-geo.objectstorage.service.networklayer.com",
Help: "US Cross Region San Jose Private Endpoint",
}, {
Value: "s3.us-east.objectstorage.softlayer.net",
Help: "US Region East Endpoint",
}, {
Value: "s3.us-east.objectstorage.service.networklayer.com",
Help: "US Region East Private Endpoint",
}, {
Value: "s3.us-south.objectstorage.softlayer.net",
Help: "US Region South Endpoint",
}, {
Value: "s3.us-south.objectstorage.service.networklayer.com",
Help: "US Region South Private Endpoint",
}, {
Value: "s3.eu-geo.objectstorage.softlayer.net",
Help: "EU Cross Region Endpoint",
}, {
Value: "s3.fra-eu-geo.objectstorage.softlayer.net",
Help: "EU Cross Region Frankfurt Endpoint",
}, {
Value: "s3.mil-eu-geo.objectstorage.softlayer.net",
Help: "EU Cross Region Milan Endpoint",
}, {
Value: "s3.ams-eu-geo.objectstorage.softlayer.net",
Help: "EU Cross Region Amsterdam Endpoint",
}, {
Value: "s3.eu-geo.objectstorage.service.networklayer.com",
Help: "EU Cross Region Private Endpoint",
}, {
Value: "s3.fra-eu-geo.objectstorage.service.networklayer.com",
Help: "EU Cross Region Frankfurt Private Endpoint",
}, {
Value: "s3.mil-eu-geo.objectstorage.service.networklayer.com",
Help: "EU Cross Region Milan Private Endpoint",
}, {
Value: "s3.ams-eu-geo.objectstorage.service.networklayer.com",
Help: "EU Cross Region Amsterdam Private Endpoint",
}, {
Value: "s3.eu-gb.objectstorage.softlayer.net",
Help: "Great Britain Endpoint",
}, {
Value: "s3.eu-gb.objectstorage.service.networklayer.com",
Help: "Great Britain Private Endpoint",
}, {
Value: "s3.ap-geo.objectstorage.softlayer.net",
Help: "APAC Cross Regional Endpoint",
}, {
Value: "s3.tok-ap-geo.objectstorage.softlayer.net",
Help: "APAC Cross Regional Tokyo Endpoint",
}, {
Value: "s3.hkg-ap-geo.objectstorage.softlayer.net",
Help: "APAC Cross Regional HongKong Endpoint",
}, {
Value: "s3.seo-ap-geo.objectstorage.softlayer.net",
Help: "APAC Cross Regional Seoul Endpoint",
}, {
Value: "s3.ap-geo.objectstorage.service.networklayer.com",
Help: "APAC Cross Regional Private Endpoint",
}, {
Value: "s3.tok-ap-geo.objectstorage.service.networklayer.com",
Help: "APAC Cross Regional Tokyo Private Endpoint",
}, {
Value: "s3.hkg-ap-geo.objectstorage.service.networklayer.com",
Help: "APAC Cross Regional HongKong Private Endpoint",
}, {
Value: "s3.seo-ap-geo.objectstorage.service.networklayer.com",
Help: "APAC Cross Regional Seoul Private Endpoint",
}, {
Value: "s3.mel01.objectstorage.softlayer.net",
Help: "Melbourne Single Site Endpoint",
}, {
Value: "s3.mel01.objectstorage.service.networklayer.com",
Help: "Melbourne Single Site Private Endpoint",
}, {
Value: "s3.tor01.objectstorage.softlayer.net",
Help: "Toronto Single Site Endpoint",
}, {
Value: "s3.tor01.objectstorage.service.networklayer.com",
Help: "Toronto Single Site Private Endpoint",
}},
}, {
// oss endpoints: https://help.aliyun.com/document_detail/31837.html
Name: "endpoint",
Help: "Endpoint for OSS API.",
Provider: "Alibaba",
Examples: []fs.OptionExample{{
Value: "oss-cn-hangzhou.aliyuncs.com",
Help: "East China 1 (Hangzhou)",
}, {
Value: "oss-cn-shanghai.aliyuncs.com",
Help: "East China 2 (Shanghai)",
}, {
Value: "oss-cn-qingdao.aliyuncs.com",
Help: "North China 1 (Qingdao)",
}, {
Value: "oss-cn-beijing.aliyuncs.com",
Help: "North China 2 (Beijing)",
}, {
Value: "oss-cn-zhangjiakou.aliyuncs.com",
Help: "North China 3 (Zhangjiakou)",
}, {
Value: "oss-cn-huhehaote.aliyuncs.com",
Help: "North China 5 (Huhehaote)",
}, {
Value: "oss-cn-shenzhen.aliyuncs.com",
Help: "South China 1 (Shenzhen)",
}, {
Value: "oss-cn-hongkong.aliyuncs.com",
Help: "Hong Kong (Hong Kong)",
}, {
Value: "oss-us-west-1.aliyuncs.com",
Help: "US West 1 (Silicon Valley)",
}, {
Value: "oss-us-east-1.aliyuncs.com",
Help: "US East 1 (Virginia)",
}, {
Value: "oss-ap-southeast-1.aliyuncs.com",
Help: "Southeast Asia Southeast 1 (Singapore)",
}, {
Value: "oss-ap-southeast-2.aliyuncs.com",
Help: "Asia Pacific Southeast 2 (Sydney)",
}, {
Value: "oss-ap-southeast-3.aliyuncs.com",
Help: "Southeast Asia Southeast 3 (Kuala Lumpur)",
}, {
Value: "oss-ap-southeast-5.aliyuncs.com",
Help: "Asia Pacific Southeast 5 (Jakarta)",
}, {
Value: "oss-ap-northeast-1.aliyuncs.com",
Help: "Asia Pacific Northeast 1 (Japan)",
}, {
Value: "oss-ap-south-1.aliyuncs.com",
Help: "Asia Pacific South 1 (Mumbai)",
}, {
Value: "oss-eu-central-1.aliyuncs.com",
Help: "Central Europe 1 (Frankfurt)",
}, {
Value: "oss-eu-west-1.aliyuncs.com",
Help: "West Europe (London)",
}, {
Value: "oss-me-east-1.aliyuncs.com",
Help: "Middle East 1 (Dubai)",
}},
}, {
Name: "endpoint",
Help: "Endpoint for S3 API.\nRequired when using an S3 clone.",
Provider: "!AWS,IBMCOS,Alibaba",
Examples: []fs.OptionExample{{
Value: "objects-us-east-1.dream.io",
Help: "Dream Objects endpoint",
Provider: "Dreamhost",
}, {
Value: "nyc3.digitaloceanspaces.com",
Help: "Digital Ocean Spaces New York 3",
Provider: "DigitalOcean",
}, {
Value: "ams3.digitaloceanspaces.com",
Help: "Digital Ocean Spaces Amsterdam 3",
Provider: "DigitalOcean",
}, {
Value: "sgp1.digitaloceanspaces.com",
Help: "Digital Ocean Spaces Singapore 1",
Provider: "DigitalOcean",
}, {
Value: "s3.wasabisys.com",
Help: "Wasabi US East endpoint",
Provider: "Wasabi",
}, {
Value: "s3.us-west-1.wasabisys.com",
Help: "Wasabi US West endpoint",
Provider: "Wasabi",
}, {
Value: "s3.eu-central-1.wasabisys.com",
Help: "Wasabi EU Central endpoint",
Provider: "Wasabi",
}},
}, {
Name: "location_constraint",
Help: "Location constraint - must be set to match the Region.\nUsed when creating buckets only.",
Provider: "AWS",
Examples: []fs.OptionExample{{
Value: "",
Help: "Empty for US Region, Northern Virginia or Pacific Northwest.",
}, {
Value: "us-east-2",
Help: "US East (Ohio) Region.",
}, {
Value: "us-west-2",
Help: "US West (Oregon) Region.",
}, {
Value: "us-west-1",
Help: "US West (Northern California) Region.",
}, {
Value: "ca-central-1",
Help: "Canada (Central) Region.",
}, {
Value: "eu-west-1",
Help: "EU (Ireland) Region.",
}, {
Value: "eu-west-2",
Help: "EU (London) Region.",
}, {
Value: "eu-north-1",
Help: "EU (Stockholm) Region.",
}, {
Value: "EU",
Help: "EU Region.",
}, {
Value: "ap-southeast-1",
Help: "Asia Pacific (Singapore) Region.",
}, {
Value: "ap-southeast-2",
Help: "Asia Pacific (Sydney) Region.",
}, {
Value: "ap-northeast-1",
Help: "Asia Pacific (Tokyo) Region.",
}, {
Value: "ap-northeast-2",
Help: "Asia Pacific (Seoul)",
}, {
Value: "ap-south-1",
Help: "Asia Pacific (Mumbai)",
}, {
Value: "sa-east-1",
Help: "South America (Sao Paulo) Region.",
}},
}, {
Name: "location_constraint",
Help: "Location constraint - must match endpoint when using IBM Cloud Public.\nFor on-prem COS, do not make a selection from this list, hit enter",
Provider: "IBMCOS",
Examples: []fs.OptionExample{{
Value: "us-standard",
Help: "US Cross Region Standard",
}, {
Value: "us-vault",
Help: "US Cross Region Vault",
}, {
Value: "us-cold",
Help: "US Cross Region Cold",
}, {
Value: "us-flex",
Help: "US Cross Region Flex",
}, {
Value: "us-east-standard",
Help: "US East Region Standard",
}, {
Value: "us-east-vault",
Help: "US East Region Vault",
}, {
Value: "us-east-cold",
Help: "US East Region Cold",
}, {
Value: "us-east-flex",
Help: "US East Region Flex",
}, {
Value: "us-south-standard",
Help: "US South Region Standard",
}, {
Value: "us-south-vault",
Help: "US South Region Vault",
}, {
Value: "us-south-cold",
Help: "US South Region Cold",
}, {
Value: "us-south-flex",
Help: "US South Region Flex",
}, {
Value: "eu-standard",
Help: "EU Cross Region Standard",
}, {
Value: "eu-vault",
Help: "EU Cross Region Vault",
}, {
Value: "eu-cold",
Help: "EU Cross Region Cold",
}, {
Value: "eu-flex",
Help: "EU Cross Region Flex",
}, {
Value: "eu-gb-standard",
Help: "Great Britain Standard",
}, {
Value: "eu-gb-vault",
Help: "Great Britain Vault",
}, {
Value: "eu-gb-cold",
Help: "Great Britain Cold",
}, {
Value: "eu-gb-flex",
Help: "Great Britain Flex",
}, {
Value: "ap-standard",
Help: "APAC Standard",
}, {
Value: "ap-vault",
Help: "APAC Vault",
}, {
Value: "ap-cold",
Help: "APAC Cold",
}, {
Value: "ap-flex",
Help: "APAC Flex",
}, {
Value: "mel01-standard",
Help: "Melbourne Standard",
}, {
Value: "mel01-vault",
Help: "Melbourne Vault",
}, {
Value: "mel01-cold",
Help: "Melbourne Cold",
}, {
Value: "mel01-flex",
Help: "Melbourne Flex",
}, {
Value: "tor01-standard",
Help: "Toronto Standard",
}, {
Value: "tor01-vault",
Help: "Toronto Vault",
}, {
Value: "tor01-cold",
Help: "Toronto Cold",
}, {
Value: "tor01-flex",
Help: "Toronto Flex",
}},
}, {
Name: "location_constraint",
Help: "Location constraint - must be set to match the Region.\nLeave blank if not sure. Used when creating buckets only.",
Provider: "!AWS,IBMCOS,Alibaba",
}, {
Name: "acl",
Help: `Canned ACL used when creating buckets and storing or copying objects.
This ACL is used for creating objects and if bucket_acl isn't set, for creating buckets too.
For more info visit https://docs.aws.amazon.com/AmazonS3/latest/dev/acl-overview.html#canned-acl
Note that this ACL is applied when server side copying objects as S3
doesn't copy the ACL from the source but rather writes a fresh one.`,
Examples: []fs.OptionExample{{
Value: "private",
Help: "Owner gets FULL_CONTROL. No one else has access rights (default).",
Provider: "!IBMCOS",
}, {
Value: "public-read",
Help: "Owner gets FULL_CONTROL. The AllUsers group gets READ access.",
Provider: "!IBMCOS",
}, {
Value: "public-read-write",
Help: "Owner gets FULL_CONTROL. The AllUsers group gets READ and WRITE access.\nGranting this on a bucket is generally not recommended.",
Provider: "!IBMCOS",
}, {
Value: "authenticated-read",
Help: "Owner gets FULL_CONTROL. The AuthenticatedUsers group gets READ access.",
Provider: "!IBMCOS",
}, {
Value: "bucket-owner-read",
Help: "Object owner gets FULL_CONTROL. Bucket owner gets READ access.\nIf you specify this canned ACL when creating a bucket, Amazon S3 ignores it.",
Provider: "!IBMCOS",
}, {
Value: "bucket-owner-full-control",
Help: "Both the object owner and the bucket owner get FULL_CONTROL over the object.\nIf you specify this canned ACL when creating a bucket, Amazon S3 ignores it.",
Provider: "!IBMCOS",
}, {
Value: "private",
Help: "Owner gets FULL_CONTROL. No one else has access rights (default). This acl is available on IBM Cloud (Infra), IBM Cloud (Storage), On-Premise COS",
Provider: "IBMCOS",
}, {
Value: "public-read",
Help: "Owner gets FULL_CONTROL. The AllUsers group gets READ access. This acl is available on IBM Cloud (Infra), IBM Cloud (Storage), On-Premise IBM COS",
Provider: "IBMCOS",
}, {
Value: "public-read-write",
Help: "Owner gets FULL_CONTROL. The AllUsers group gets READ and WRITE access. This acl is available on IBM Cloud (Infra), On-Premise IBM COS",
Provider: "IBMCOS",
}, {
Value: "authenticated-read",
Help: "Owner gets FULL_CONTROL. The AuthenticatedUsers group gets READ access. Not supported on Buckets. This acl is available on IBM Cloud (Infra) and On-Premise IBM COS",
Provider: "IBMCOS",
}},
}, {
Name: "bucket_acl",
Help: `Canned ACL used when creating buckets.
For more info visit https://docs.aws.amazon.com/AmazonS3/latest/dev/acl-overview.html#canned-acl
Note that this ACL is applied when only when creating buckets. If it
isn't set then "acl" is used instead.`,
Advanced: true,
Examples: []fs.OptionExample{{
Value: "private",
Help: "Owner gets FULL_CONTROL. No one else has access rights (default).",
}, {
Value: "public-read",
Help: "Owner gets FULL_CONTROL. The AllUsers group gets READ access.",
}, {
Value: "public-read-write",
Help: "Owner gets FULL_CONTROL. The AllUsers group gets READ and WRITE access.\nGranting this on a bucket is generally not recommended.",
}, {
Value: "authenticated-read",
Help: "Owner gets FULL_CONTROL. The AuthenticatedUsers group gets READ access.",
}},
}, {
Name: "server_side_encryption",
Help: "The server-side encryption algorithm used when storing this object in S3.",
Provider: "AWS",
Examples: []fs.OptionExample{{
Value: "",
Help: "None",
}, {
Value: "AES256",
Help: "AES256",
}, {
Value: "aws:kms",
Help: "aws:kms",
}},
}, {
Name: "sse_kms_key_id",
Help: "If using KMS ID you must provide the ARN of Key.",
Provider: "AWS",
Examples: []fs.OptionExample{{
Value: "",
Help: "None",
}, {
Value: "arn:aws:kms:us-east-1:*",
Help: "arn:aws:kms:*",
}},
}, {
Name: "storage_class",
Help: "The storage class to use when storing new objects in S3.",
Provider: "AWS",
Examples: []fs.OptionExample{{
Value: "",
Help: "Default",
}, {
Value: "STANDARD",
Help: "Standard storage class",
}, {
Value: "REDUCED_REDUNDANCY",
Help: "Reduced redundancy storage class",
}, {
Value: "STANDARD_IA",
Help: "Standard Infrequent Access storage class",
}, {
Value: "ONEZONE_IA",
Help: "One Zone Infrequent Access storage class",
}, {
Value: "GLACIER",
Help: "Glacier storage class",
}, {
Value: "DEEP_ARCHIVE",
Help: "Glacier Deep Archive storage class",
}, {
Value: "INTELLIGENT_TIERING",
Help: "Intelligent-Tiering storage class",
}},
}, {
// Mapping from here: https://www.alibabacloud.com/help/doc-detail/64919.htm
Name: "storage_class",
Help: "The storage class to use when storing new objects in OSS.",
Provider: "Alibaba",
Examples: []fs.OptionExample{{
Value: "",
Help: "Default",
}, {
Value: "STANDARD",
Help: "Standard storage class",
}, {
Value: "GLACIER",
Help: "Archive storage mode.",
}, {
Value: "STANDARD_IA",
Help: "Infrequent access storage mode.",
}},
}, {
Name: "upload_cutoff",
Help: `Cutoff for switching to chunked upload
Any files larger than this will be uploaded in chunks of chunk_size.
The minimum is 0 and the maximum is 5GB.`,
Default: defaultUploadCutoff,
Advanced: true,
}, {
Name: "chunk_size",
Help: `Chunk size to use for uploading.
When uploading files larger than upload_cutoff they will be uploaded
as multipart uploads using this chunk size.
Note that "--s3-upload-concurrency" chunks of this size are buffered
in memory per transfer.
If you are transferring large files over high speed links and you have
enough memory, then increasing this will speed up the transfers.`,
Default: minChunkSize,
Advanced: true,
}, {
Name: "disable_checksum",
Help: "Don't store MD5 checksum with object metadata",
Default: false,
Advanced: true,
}, {
Name: "session_token",
Help: "An AWS session token",
Advanced: true,
}, {
Name: "upload_concurrency",
Help: `Concurrency for multipart uploads.
This is the number of chunks of the same file that are uploaded
concurrently.
If you are uploading small numbers of large file over high speed link
and these uploads do not fully utilize your bandwidth, then increasing
this may help to speed up the transfers.`,
Default: 4,
Advanced: true,
}, {
Name: "force_path_style",
Help: `If true use path style access if false use virtual hosted style.
If this is true (the default) then rclone will use path style access,
if false then rclone will use virtual path style. See [the AWS S3
docs](https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingBucket.html#access-bucket-intro)
for more info.
Some providers (eg Aliyun OSS or Netease COS) require this set to false.`,
Default: true,
Advanced: true,
}, {
Name: "v2_auth",
Help: `If true use v2 authentication.
If this is false (the default) then rclone will use v4 authentication.
If it is set then rclone will use v2 authentication.
Use this only if v4 signatures don't work, eg pre Jewel/v10 CEPH.`,
Default: false,
Advanced: true,
}, {
Name: "use_accelerate_endpoint",
Provider: "AWS",
Help: `If true use the AWS S3 accelerated endpoint.
See: [AWS S3 Transfer acceleration](https://docs.aws.amazon.com/AmazonS3/latest/dev/transfer-acceleration-examples.html)`,
Default: false,
Advanced: true,
}, {
Name: "leave_parts_on_error",
Provider: "AWS",
Help: `If true avoid calling abort upload on a failure, leaving all successfully uploaded parts on S3 for manual recovery.
It should be set to true for resuming uploads across different sessions.
WARNING: Storing parts of an incomplete multipart upload counts towards space usage on S3 and will add additional costs if not cleaned up.
`,
Default: false,
Advanced: true,
}},
})
}
// Constants
const (
metaMtime = "Mtime" // the meta key to store mtime in - eg X-Amz-Meta-Mtime
metaMD5Hash = "Md5chksum" // the meta key to store md5hash in
listChunkSize = 1000 // number of items to read at once
maxRetries = 10 // number of retries to make of operations
maxSizeForCopy = 5 * 1024 * 1024 * 1024 // The maximum size of object we can COPY
maxFileSize = 5 * 1024 * 1024 * 1024 * 1024 // largest possible upload file size
minChunkSize = fs.SizeSuffix(s3manager.MinUploadPartSize)
defaultUploadCutoff = fs.SizeSuffix(200 * 1024 * 1024)
maxUploadCutoff = fs.SizeSuffix(5 * 1024 * 1024 * 1024)
minSleep = 10 * time.Millisecond // In case of error, start at 10ms sleep.
)
// Options defines the configuration for this backend
type Options struct {
Provider string `config:"provider"`
EnvAuth bool `config:"env_auth"`
AccessKeyID string `config:"access_key_id"`
SecretAccessKey string `config:"secret_access_key"`
Region string `config:"region"`
Endpoint string `config:"endpoint"`
LocationConstraint string `config:"location_constraint"`
ACL string `config:"acl"`
BucketACL string `config:"bucket_acl"`
ServerSideEncryption string `config:"server_side_encryption"`
SSEKMSKeyID string `config:"sse_kms_key_id"`
StorageClass string `config:"storage_class"`
UploadCutoff fs.SizeSuffix `config:"upload_cutoff"`
ChunkSize fs.SizeSuffix `config:"chunk_size"`
DisableChecksum bool `config:"disable_checksum"`
SessionToken string `config:"session_token"`
UploadConcurrency int `config:"upload_concurrency"`
ForcePathStyle bool `config:"force_path_style"`
V2Auth bool `config:"v2_auth"`
UseAccelerateEndpoint bool `config:"use_accelerate_endpoint"`
LeavePartsOnError bool `config:"leave_parts_on_error"`
}
// Fs represents a remote s3 server
type Fs struct {
name string // the name of the remote
root string // root of the bucket - ignore all objects above this
opt Options // parsed options
features *fs.Features // optional features
c *s3.S3 // the connection to the s3 server
ses *session.Session // the s3 session
rootBucket string // bucket part of root (if any)
rootDirectory string // directory part of root (if any)
cache *bucket.Cache // cache for bucket creation status
pacer *fs.Pacer // To pace the API calls
srv *http.Client // a plain http client
}
// Object describes a s3 object
type Object struct {
// Will definitely have everything but meta which may be nil
//
// List will read everything but meta & mimeType - to fill
// that in you need to call readMetaData
fs *Fs // what this object is part of
remote string // The remote path
etag string // md5sum of the object
bytes int64 // size of the object
lastModified time.Time // Last modified
meta map[string]*string // The object metadata if known - may be nil
mimeType string // MimeType of object - may be ""
storageClass string // eg GLACIER
}
// ------------------------------------------------------------
// Name of the remote (as passed into NewFs)
func (f *Fs) Name() string {
return f.name
}
// Root of the remote (as passed into NewFs)
func (f *Fs) Root() string {
return f.root
}
// String converts this Fs to a string
func (f *Fs) String() string {
if f.rootBucket == "" {
return fmt.Sprintf("S3 root")
}
if f.rootDirectory == "" {
return fmt.Sprintf("S3 bucket %s", f.rootBucket)
}
return fmt.Sprintf("S3 bucket %s path %s", f.rootBucket, f.rootDirectory)
}
// Features returns the optional features of this Fs
func (f *Fs) Features() *fs.Features {
return f.features
}
// retryErrorCodes is a slice of error codes that we will retry
// See: https://docs.aws.amazon.com/AmazonS3/latest/API/ErrorResponses.html
var retryErrorCodes = []int{
// 409, // Conflict - various states that could be resolved on a retry
503, // Service Unavailable/Slow Down - "Reduce your request rate"
}
//S3 is pretty resilient, and the built in retry handling is probably sufficient
// as it should notice closed connections and timeouts which are the most likely
// sort of failure modes
func (f *Fs) shouldRetry(err error) (bool, error) {
// If this is an awserr object, try and extract more useful information to determine if we should retry
if awsError, ok := err.(awserr.Error); ok {
// Simple case, check the original embedded error in case it's generically retryable
if fserrors.ShouldRetry(awsError.OrigErr()) {
return true, err
}
// Failing that, if it's a RequestFailure it's probably got an http status code we can check
if reqErr, ok := err.(awserr.RequestFailure); ok {
// 301 if wrong region for bucket - can only update if running from a bucket
if f.rootBucket != "" {
if reqErr.StatusCode() == http.StatusMovedPermanently {
urfbErr := f.updateRegionForBucket(f.rootBucket)
if urfbErr != nil {
fs.Errorf(f, "Failed to update region for bucket: %v", urfbErr)
return false, err
}
return true, err
}
}
for _, e := range retryErrorCodes {
if reqErr.StatusCode() == e {
return true, err
}
}
}
}
// Ok, not an awserr, check for generic failure conditions
return fserrors.ShouldRetry(err), err
}
// parsePath parses a remote 'url'
func parsePath(path string) (root string) {
root = strings.Trim(path, "/")
return
}
// split returns bucket and bucketPath from the rootRelativePath
// relative to f.root
func (f *Fs) split(rootRelativePath string) (bucketName, bucketPath string) {
bucketName, bucketPath = bucket.Split(path.Join(f.root, rootRelativePath))
return enc.FromStandardName(bucketName), enc.FromStandardPath(bucketPath)
}
// split returns bucket and bucketPath from the object
func (o *Object) split() (bucket, bucketPath string) {
return o.fs.split(o.remote)
}
// s3Connection makes a connection to s3
func s3Connection(opt *Options) (*s3.S3, *session.Session, error) {
// Make the auth
v := credentials.Value{
AccessKeyID: opt.AccessKeyID,
SecretAccessKey: opt.SecretAccessKey,
SessionToken: opt.SessionToken,
}
lowTimeoutClient := &http.Client{Timeout: 1 * time.Second} // low timeout to ec2 metadata service
def := defaults.Get()
def.Config.HTTPClient = lowTimeoutClient
// first provider to supply a credential set "wins"
providers := []credentials.Provider{
// use static credentials if they're present (checked by provider)
&credentials.StaticProvider{Value: v},
// * Access Key ID: AWS_ACCESS_KEY_ID or AWS_ACCESS_KEY
// * Secret Access Key: AWS_SECRET_ACCESS_KEY or AWS_SECRET_KEY
&credentials.EnvProvider{},
// A SharedCredentialsProvider retrieves credentials
// from the current user's home directory. It checks
// AWS_SHARED_CREDENTIALS_FILE and AWS_PROFILE too.
&credentials.SharedCredentialsProvider{},
// Pick up IAM role if we're in an ECS task
defaults.RemoteCredProvider(*def.Config, def.Handlers),
// Pick up IAM role in case we're on EC2
&ec2rolecreds.EC2RoleProvider{
Client: ec2metadata.New(session.New(), &aws.Config{
HTTPClient: lowTimeoutClient,
}),
ExpiryWindow: 3,
},
}
cred := credentials.NewChainCredentials(providers)
switch {
case opt.EnvAuth:
// No need for empty checks if "env_auth" is true
case v.AccessKeyID == "" && v.SecretAccessKey == "":
// if no access key/secret and iam is explicitly disabled then fall back to anon interaction
cred = credentials.AnonymousCredentials
case v.AccessKeyID == "":
return nil, nil, errors.New("access_key_id not found")
case v.SecretAccessKey == "":
return nil, nil, errors.New("secret_access_key not found")
}
if opt.Region == "" && opt.Endpoint == "" {
opt.Endpoint = "https://s3.amazonaws.com/"
}
if opt.Region == "" {
opt.Region = "us-east-1"
}
if opt.Provider == "Alibaba" || opt.Provider == "Netease" || opt.UseAccelerateEndpoint {
opt.ForcePathStyle = false
}
awsConfig := aws.NewConfig().
WithMaxRetries(maxRetries).
WithCredentials(cred).
WithHTTPClient(fshttp.NewClient(fs.Config)).
WithS3ForcePathStyle(opt.ForcePathStyle).
WithS3UseAccelerate(opt.UseAccelerateEndpoint)
if opt.Region != "" {
awsConfig.WithRegion(opt.Region)
}
if opt.Endpoint != "" {
awsConfig.WithEndpoint(opt.Endpoint)