mirror of
https://github.com/rclone/rclone.git
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39f5059d48
Before this change buckets were created with the same ACL as objects. After this change, the user can set just --s3-acl to set the ACL of buckets and objects, or use --s3-bucket-acl as well to have a different ACL used for bucket creation. This also logs at INFO level the creation and deletion of buckets.
1897 lines
55 KiB
Go
1897 lines
55 KiB
Go
// Package s3 provides an interface to Amazon S3 oject storage
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package s3
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// FIXME need to prevent anything but ListDir working for s3://
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/*
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Progress of port to aws-sdk
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* Don't really need o.meta at all?
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What happens if you CTRL-C a multipart upload
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* get an incomplete upload
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* disappears when you delete the bucket
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*/
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import (
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"encoding/base64"
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"encoding/hex"
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"fmt"
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"io"
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"net/http"
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"path"
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"regexp"
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"strings"
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"sync"
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"time"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/aws/awserr"
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"github.com/aws/aws-sdk-go/aws/corehandlers"
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"github.com/aws/aws-sdk-go/aws/credentials"
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"github.com/aws/aws-sdk-go/aws/credentials/ec2rolecreds"
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"github.com/aws/aws-sdk-go/aws/defaults"
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"github.com/aws/aws-sdk-go/aws/ec2metadata"
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"github.com/aws/aws-sdk-go/aws/request"
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"github.com/aws/aws-sdk-go/aws/session"
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"github.com/aws/aws-sdk-go/service/s3"
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"github.com/aws/aws-sdk-go/service/s3/s3manager"
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"github.com/ncw/rclone/fs"
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"github.com/ncw/rclone/fs/config/configmap"
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"github.com/ncw/rclone/fs/config/configstruct"
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"github.com/ncw/rclone/fs/fserrors"
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"github.com/ncw/rclone/fs/fshttp"
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"github.com/ncw/rclone/fs/hash"
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"github.com/ncw/rclone/fs/walk"
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"github.com/ncw/rclone/lib/pacer"
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"github.com/ncw/rclone/lib/rest"
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"github.com/ncw/swift"
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"github.com/pkg/errors"
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)
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// Register with Fs
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func init() {
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fs.Register(&fs.RegInfo{
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Name: "s3",
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Description: "Amazon S3 Compliant Storage Provider (AWS, Alibaba, Ceph, Digital Ocean, Dreamhost, IBM COS, Minio, etc)",
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NewFs: NewFs,
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Options: []fs.Option{{
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Name: fs.ConfigProvider,
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Help: "Choose your S3 provider.",
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Examples: []fs.OptionExample{{
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Value: "AWS",
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Help: "Amazon Web Services (AWS) S3",
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}, {
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Value: "Alibaba",
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Help: "Alibaba Cloud Object Storage System (OSS) formerly Aliyun",
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}, {
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Value: "Ceph",
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Help: "Ceph Object Storage",
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}, {
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Value: "DigitalOcean",
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Help: "Digital Ocean Spaces",
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}, {
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Value: "Dreamhost",
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Help: "Dreamhost DreamObjects",
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}, {
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Value: "IBMCOS",
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Help: "IBM COS S3",
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}, {
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Value: "Minio",
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Help: "Minio Object Storage",
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}, {
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Value: "Netease",
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Help: "Netease Object Storage (NOS)",
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}, {
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Value: "Wasabi",
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Help: "Wasabi Object Storage",
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}, {
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Value: "Other",
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Help: "Any other S3 compatible provider",
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}},
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}, {
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Name: "env_auth",
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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.",
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Default: false,
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Examples: []fs.OptionExample{{
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Value: "false",
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Help: "Enter AWS credentials in the next step",
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}, {
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Value: "true",
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Help: "Get AWS credentials from the environment (env vars or IAM)",
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}},
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}, {
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Name: "access_key_id",
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Help: "AWS Access Key ID.\nLeave blank for anonymous access or runtime credentials.",
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}, {
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Name: "secret_access_key",
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Help: "AWS Secret Access Key (password)\nLeave blank for anonymous access or runtime credentials.",
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}, {
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Name: "region",
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Help: "Region to connect to.",
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Provider: "AWS",
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Examples: []fs.OptionExample{{
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Value: "us-east-1",
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Help: "The default endpoint - a good choice if you are unsure.\nUS Region, Northern Virginia or Pacific Northwest.\nLeave location constraint empty.",
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}, {
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Value: "us-east-2",
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Help: "US East (Ohio) Region\nNeeds location constraint us-east-2.",
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}, {
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Value: "us-west-2",
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Help: "US West (Oregon) Region\nNeeds location constraint us-west-2.",
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}, {
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Value: "us-west-1",
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Help: "US West (Northern California) Region\nNeeds location constraint us-west-1.",
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}, {
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Value: "ca-central-1",
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Help: "Canada (Central) Region\nNeeds location constraint ca-central-1.",
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}, {
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Value: "eu-west-1",
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Help: "EU (Ireland) Region\nNeeds location constraint EU or eu-west-1.",
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}, {
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Value: "eu-west-2",
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Help: "EU (London) Region\nNeeds location constraint eu-west-2.",
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}, {
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Value: "eu-central-1",
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Help: "EU (Frankfurt) Region\nNeeds location constraint eu-central-1.",
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}, {
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Value: "ap-southeast-1",
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Help: "Asia Pacific (Singapore) Region\nNeeds location constraint ap-southeast-1.",
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}, {
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Value: "ap-southeast-2",
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Help: "Asia Pacific (Sydney) Region\nNeeds location constraint ap-southeast-2.",
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}, {
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Value: "ap-northeast-1",
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Help: "Asia Pacific (Tokyo) Region\nNeeds location constraint ap-northeast-1.",
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}, {
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Value: "ap-northeast-2",
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Help: "Asia Pacific (Seoul)\nNeeds location constraint ap-northeast-2.",
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}, {
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Value: "ap-south-1",
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Help: "Asia Pacific (Mumbai)\nNeeds location constraint ap-south-1.",
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}, {
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Value: "sa-east-1",
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Help: "South America (Sao Paulo) Region\nNeeds location constraint sa-east-1.",
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}},
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}, {
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Name: "region",
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Help: "Region to connect to.\nLeave blank if you are using an S3 clone and you don't have a region.",
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Provider: "!AWS,Alibaba",
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Examples: []fs.OptionExample{{
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Value: "",
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Help: "Use this if unsure. Will use v4 signatures and an empty region.",
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}, {
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Value: "other-v2-signature",
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Help: "Use this only if v4 signatures don't work, eg pre Jewel/v10 CEPH.",
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}},
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}, {
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Name: "endpoint",
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Help: "Endpoint for S3 API.\nLeave blank if using AWS to use the default endpoint for the region.",
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Provider: "AWS",
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}, {
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Name: "endpoint",
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Help: "Endpoint for IBM COS S3 API.\nSpecify if using an IBM COS On Premise.",
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Provider: "IBMCOS",
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Examples: []fs.OptionExample{{
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Value: "s3-api.us-geo.objectstorage.softlayer.net",
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Help: "US Cross Region Endpoint",
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}, {
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Value: "s3-api.dal.us-geo.objectstorage.softlayer.net",
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Help: "US Cross Region Dallas Endpoint",
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}, {
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Value: "s3-api.wdc-us-geo.objectstorage.softlayer.net",
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Help: "US Cross Region Washington DC Endpoint",
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}, {
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Value: "s3-api.sjc-us-geo.objectstorage.softlayer.net",
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Help: "US Cross Region San Jose Endpoint",
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}, {
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Value: "s3-api.us-geo.objectstorage.service.networklayer.com",
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Help: "US Cross Region Private Endpoint",
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}, {
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Value: "s3-api.dal-us-geo.objectstorage.service.networklayer.com",
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Help: "US Cross Region Dallas Private Endpoint",
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}, {
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Value: "s3-api.wdc-us-geo.objectstorage.service.networklayer.com",
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Help: "US Cross Region Washington DC Private Endpoint",
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}, {
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Value: "s3-api.sjc-us-geo.objectstorage.service.networklayer.com",
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Help: "US Cross Region San Jose Private Endpoint",
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}, {
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Value: "s3.us-east.objectstorage.softlayer.net",
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Help: "US Region East Endpoint",
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}, {
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Value: "s3.us-east.objectstorage.service.networklayer.com",
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Help: "US Region East Private Endpoint",
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}, {
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Value: "s3.us-south.objectstorage.softlayer.net",
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Help: "US Region South Endpoint",
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}, {
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Value: "s3.us-south.objectstorage.service.networklayer.com",
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Help: "US Region South Private Endpoint",
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}, {
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Value: "s3.eu-geo.objectstorage.softlayer.net",
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Help: "EU Cross Region Endpoint",
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}, {
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Value: "s3.fra-eu-geo.objectstorage.softlayer.net",
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Help: "EU Cross Region Frankfurt Endpoint",
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}, {
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Value: "s3.mil-eu-geo.objectstorage.softlayer.net",
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Help: "EU Cross Region Milan Endpoint",
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}, {
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Value: "s3.ams-eu-geo.objectstorage.softlayer.net",
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Help: "EU Cross Region Amsterdam Endpoint",
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}, {
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Value: "s3.eu-geo.objectstorage.service.networklayer.com",
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Help: "EU Cross Region Private Endpoint",
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}, {
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Value: "s3.fra-eu-geo.objectstorage.service.networklayer.com",
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Help: "EU Cross Region Frankfurt Private Endpoint",
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}, {
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Value: "s3.mil-eu-geo.objectstorage.service.networklayer.com",
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Help: "EU Cross Region Milan Private Endpoint",
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}, {
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Value: "s3.ams-eu-geo.objectstorage.service.networklayer.com",
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Help: "EU Cross Region Amsterdam Private Endpoint",
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}, {
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Value: "s3.eu-gb.objectstorage.softlayer.net",
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Help: "Great Britan Endpoint",
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}, {
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Value: "s3.eu-gb.objectstorage.service.networklayer.com",
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Help: "Great Britan Private Endpoint",
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}, {
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Value: "s3.ap-geo.objectstorage.softlayer.net",
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Help: "APAC Cross Regional Endpoint",
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}, {
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Value: "s3.tok-ap-geo.objectstorage.softlayer.net",
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Help: "APAC Cross Regional Tokyo Endpoint",
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}, {
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Value: "s3.hkg-ap-geo.objectstorage.softlayer.net",
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Help: "APAC Cross Regional HongKong Endpoint",
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}, {
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Value: "s3.seo-ap-geo.objectstorage.softlayer.net",
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Help: "APAC Cross Regional Seoul Endpoint",
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}, {
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Value: "s3.ap-geo.objectstorage.service.networklayer.com",
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Help: "APAC Cross Regional Private Endpoint",
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}, {
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Value: "s3.tok-ap-geo.objectstorage.service.networklayer.com",
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Help: "APAC Cross Regional Tokyo Private Endpoint",
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}, {
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Value: "s3.hkg-ap-geo.objectstorage.service.networklayer.com",
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Help: "APAC Cross Regional HongKong Private Endpoint",
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}, {
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Value: "s3.seo-ap-geo.objectstorage.service.networklayer.com",
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Help: "APAC Cross Regional Seoul Private Endpoint",
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}, {
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Value: "s3.mel01.objectstorage.softlayer.net",
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Help: "Melbourne Single Site Endpoint",
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}, {
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Value: "s3.mel01.objectstorage.service.networklayer.com",
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Help: "Melbourne Single Site Private Endpoint",
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}, {
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Value: "s3.tor01.objectstorage.softlayer.net",
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Help: "Toronto Single Site Endpoint",
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}, {
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Value: "s3.tor01.objectstorage.service.networklayer.com",
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Help: "Toronto Single Site Private Endpoint",
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}},
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}, {
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// oss endpoints: https://help.aliyun.com/document_detail/31837.html
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Name: "endpoint",
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Help: "Endpoint for OSS API.",
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Provider: "Alibaba",
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Examples: []fs.OptionExample{{
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Value: "oss-cn-hangzhou.aliyuncs.com",
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Help: "East China 1 (Hangzhou)",
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}, {
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Value: "oss-cn-shanghai.aliyuncs.com",
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Help: "East China 2 (Shanghai)",
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}, {
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Value: "oss-cn-qingdao.aliyuncs.com",
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Help: "North China 1 (Qingdao)",
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}, {
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Value: "oss-cn-beijing.aliyuncs.com",
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Help: "North China 2 (Beijing)",
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}, {
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Value: "oss-cn-zhangjiakou.aliyuncs.com",
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Help: "North China 3 (Zhangjiakou)",
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}, {
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Value: "oss-cn-huhehaote.aliyuncs.com",
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Help: "North China 5 (Huhehaote)",
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}, {
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Value: "oss-cn-shenzhen.aliyuncs.com",
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Help: "South China 1 (Shenzhen)",
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}, {
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Value: "oss-cn-hongkong.aliyuncs.com",
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Help: "Hong Kong (Hong Kong)",
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}, {
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Value: "oss-us-west-1.aliyuncs.com",
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Help: "US West 1 (Silicon Valley)",
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}, {
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Value: "oss-us-east-1.aliyuncs.com",
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Help: "US East 1 (Virginia)",
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}, {
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Value: "oss-ap-southeast-1.aliyuncs.com",
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Help: "Southeast Asia Southeast 1 (Singapore)",
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}, {
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Value: "oss-ap-southeast-2.aliyuncs.com",
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Help: "Asia Pacific Southeast 2 (Sydney)",
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}, {
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Value: "oss-ap-southeast-3.aliyuncs.com",
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Help: "Southeast Asia Southeast 3 (Kuala Lumpur)",
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}, {
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Value: "oss-ap-southeast-5.aliyuncs.com",
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Help: "Asia Pacific Southeast 5 (Jakarta)",
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}, {
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Value: "oss-ap-northeast-1.aliyuncs.com",
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Help: "Asia Pacific Northeast 1 (Japan)",
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}, {
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Value: "oss-ap-south-1.aliyuncs.com",
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Help: "Asia Pacific South 1 (Mumbai)",
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}, {
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Value: "oss-eu-central-1.aliyuncs.com",
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Help: "Central Europe 1 (Frankfurt)",
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}, {
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Value: "oss-eu-west-1.aliyuncs.com",
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Help: "West Europe (London)",
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}, {
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Value: "oss-me-east-1.aliyuncs.com",
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Help: "Middle East 1 (Dubai)",
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}},
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}, {
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Name: "endpoint",
|
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Help: "Endpoint for S3 API.\nRequired when using an S3 clone.",
|
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Provider: "!AWS,IBMCOS,Alibaba",
|
|
Examples: []fs.OptionExample{{
|
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Value: "objects-us-west-1.dream.io",
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|
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",
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}},
|
|
}, {
|
|
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",
|
|
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 Sout hRegion 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 Britan Standard",
|
|
}, {
|
|
Value: "eu-gb-vault",
|
|
Help: "Great Britan Vault",
|
|
}, {
|
|
Value: "eu-gb-cold",
|
|
Help: "Great Britan Cold",
|
|
}, {
|
|
Value: "eu-gb-flex",
|
|
Help: "Great Britan 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",
|
|
}},
|
|
}, {
|
|
// 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,
|
|
}},
|
|
})
|
|
}
|
|
|
|
// 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"`
|
|
}
|
|
|
|
// 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
|
|
bucket string // the bucket we are working on
|
|
bucketOKMu sync.Mutex // mutex to protect bucket OK
|
|
bucketOK bool // true if we have created the bucket
|
|
bucketDeleted bool // true if we have deleted the bucket
|
|
pacer *pacer.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 ""
|
|
}
|
|
|
|
// ------------------------------------------------------------
|
|
|
|
// 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 {
|
|
if f.root == "" {
|
|
return f.bucket
|
|
}
|
|
return f.bucket + "/" + f.root
|
|
}
|
|
|
|
// String converts this Fs to a string
|
|
func (f *Fs) String() string {
|
|
if f.root == "" {
|
|
return fmt.Sprintf("S3 bucket %s", f.bucket)
|
|
}
|
|
return fmt.Sprintf("S3 bucket %s path %s", f.bucket, f.root)
|
|
}
|
|
|
|
// 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 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 retriable
|
|
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 {
|
|
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
|
|
}
|
|
|
|
// Pattern to match a s3 path
|
|
var matcher = regexp.MustCompile(`^/*([^/]*)(.*)$`)
|
|
|
|
// parseParse parses a s3 'url'
|
|
func s3ParsePath(path string) (bucket, directory string, err error) {
|
|
parts := matcher.FindStringSubmatch(path)
|
|
if parts == nil {
|
|
err = errors.Errorf("couldn't parse bucket out of s3 path %q", path)
|
|
} else {
|
|
bucket, directory = parts[1], parts[2]
|
|
directory = strings.Trim(directory, "/")
|
|
}
|
|
return
|
|
}
|
|
|
|
// 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.ForcePathStyle = false
|
|
}
|
|
awsConfig := aws.NewConfig().
|
|
WithRegion(opt.Region).
|
|
WithMaxRetries(maxRetries).
|
|
WithCredentials(cred).
|
|
WithEndpoint(opt.Endpoint).
|
|
WithHTTPClient(fshttp.NewClient(fs.Config)).
|
|
WithS3ForcePathStyle(opt.ForcePathStyle)
|
|
// awsConfig.WithLogLevel(aws.LogDebugWithSigning)
|
|
awsSessionOpts := session.Options{
|
|
Config: *awsConfig,
|
|
}
|
|
if opt.EnvAuth && opt.AccessKeyID == "" && opt.SecretAccessKey == "" {
|
|
// Enable loading config options from ~/.aws/config (selected by AWS_PROFILE env)
|
|
awsSessionOpts.SharedConfigState = session.SharedConfigEnable
|
|
// The session constructor (aws/session/mergeConfigSrcs) will only use the user's preferred credential source
|
|
// (from the shared config file) if the passed-in Options.Config.Credentials is nil.
|
|
awsSessionOpts.Config.Credentials = nil
|
|
}
|
|
ses, err := session.NewSessionWithOptions(awsSessionOpts)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
c := s3.New(ses)
|
|
if opt.V2Auth || opt.Region == "other-v2-signature" {
|
|
fs.Debugf(nil, "Using v2 auth")
|
|
signer := func(req *request.Request) {
|
|
// Ignore AnonymousCredentials object
|
|
if req.Config.Credentials == credentials.AnonymousCredentials {
|
|
return
|
|
}
|
|
sign(v.AccessKeyID, v.SecretAccessKey, req.HTTPRequest)
|
|
}
|
|
c.Handlers.Sign.Clear()
|
|
c.Handlers.Sign.PushBackNamed(corehandlers.BuildContentLengthHandler)
|
|
c.Handlers.Sign.PushBack(signer)
|
|
}
|
|
return c, ses, nil
|
|
}
|
|
|
|
func checkUploadChunkSize(cs fs.SizeSuffix) error {
|
|
if cs < minChunkSize {
|
|
return errors.Errorf("%s is less than %s", cs, minChunkSize)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (f *Fs) setUploadChunkSize(cs fs.SizeSuffix) (old fs.SizeSuffix, err error) {
|
|
err = checkUploadChunkSize(cs)
|
|
if err == nil {
|
|
old, f.opt.ChunkSize = f.opt.ChunkSize, cs
|
|
}
|
|
return
|
|
}
|
|
|
|
func checkUploadCutoff(cs fs.SizeSuffix) error {
|
|
if cs > maxUploadCutoff {
|
|
return errors.Errorf("%s is greater than %s", cs, maxUploadCutoff)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (f *Fs) setUploadCutoff(cs fs.SizeSuffix) (old fs.SizeSuffix, err error) {
|
|
err = checkUploadCutoff(cs)
|
|
if err == nil {
|
|
old, f.opt.UploadCutoff = f.opt.UploadCutoff, cs
|
|
}
|
|
return
|
|
}
|
|
|
|
// NewFs constructs an Fs from the path, bucket:path
|
|
func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
|
|
// Parse config into Options struct
|
|
opt := new(Options)
|
|
err := configstruct.Set(m, opt)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
err = checkUploadChunkSize(opt.ChunkSize)
|
|
if err != nil {
|
|
return nil, errors.Wrap(err, "s3: chunk size")
|
|
}
|
|
err = checkUploadCutoff(opt.UploadCutoff)
|
|
if err != nil {
|
|
return nil, errors.Wrap(err, "s3: upload cutoff")
|
|
}
|
|
bucket, directory, err := s3ParsePath(root)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if opt.ACL == "" {
|
|
opt.ACL = "private"
|
|
}
|
|
if opt.BucketACL == "" {
|
|
opt.BucketACL = opt.ACL
|
|
}
|
|
c, ses, err := s3Connection(opt)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
f := &Fs{
|
|
name: name,
|
|
root: directory,
|
|
opt: *opt,
|
|
c: c,
|
|
bucket: bucket,
|
|
ses: ses,
|
|
pacer: pacer.New().SetMinSleep(minSleep).SetPacer(pacer.S3Pacer),
|
|
srv: fshttp.NewClient(fs.Config),
|
|
}
|
|
f.features = (&fs.Features{
|
|
ReadMimeType: true,
|
|
WriteMimeType: true,
|
|
BucketBased: true,
|
|
}).Fill(f)
|
|
if f.root != "" {
|
|
f.root += "/"
|
|
// Check to see if the object exists
|
|
req := s3.HeadObjectInput{
|
|
Bucket: &f.bucket,
|
|
Key: &directory,
|
|
}
|
|
err = f.pacer.Call(func() (bool, error) {
|
|
_, err = f.c.HeadObject(&req)
|
|
return shouldRetry(err)
|
|
})
|
|
if err == nil {
|
|
f.root = path.Dir(directory)
|
|
if f.root == "." {
|
|
f.root = ""
|
|
} else {
|
|
f.root += "/"
|
|
}
|
|
// return an error with an fs which points to the parent
|
|
return f, fs.ErrorIsFile
|
|
}
|
|
}
|
|
// f.listMultipartUploads()
|
|
return f, nil
|
|
}
|
|
|
|
// Return an Object from a path
|
|
//
|
|
//If it can't be found it returns the error ErrorObjectNotFound.
|
|
func (f *Fs) newObjectWithInfo(remote string, info *s3.Object) (fs.Object, error) {
|
|
o := &Object{
|
|
fs: f,
|
|
remote: remote,
|
|
}
|
|
if info != nil {
|
|
// Set info but not meta
|
|
if info.LastModified == nil {
|
|
fs.Logf(o, "Failed to read last modified")
|
|
o.lastModified = time.Now()
|
|
} else {
|
|
o.lastModified = *info.LastModified
|
|
}
|
|
o.etag = aws.StringValue(info.ETag)
|
|
o.bytes = aws.Int64Value(info.Size)
|
|
} else {
|
|
err := o.readMetaData() // reads info and meta, returning an error
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
return o, nil
|
|
}
|
|
|
|
// NewObject finds the Object at remote. If it can't be found
|
|
// it returns the error fs.ErrorObjectNotFound.
|
|
func (f *Fs) NewObject(remote string) (fs.Object, error) {
|
|
return f.newObjectWithInfo(remote, nil)
|
|
}
|
|
|
|
// listFn is called from list to handle an object.
|
|
type listFn func(remote string, object *s3.Object, isDirectory bool) error
|
|
|
|
// list the objects into the function supplied
|
|
//
|
|
// dir is the starting directory, "" for root
|
|
//
|
|
// Set recurse to read sub directories
|
|
func (f *Fs) list(dir string, recurse bool, fn listFn) error {
|
|
root := f.root
|
|
if dir != "" {
|
|
root += dir + "/"
|
|
}
|
|
maxKeys := int64(listChunkSize)
|
|
delimiter := ""
|
|
if !recurse {
|
|
delimiter = "/"
|
|
}
|
|
var marker *string
|
|
for {
|
|
// FIXME need to implement ALL loop
|
|
req := s3.ListObjectsInput{
|
|
Bucket: &f.bucket,
|
|
Delimiter: &delimiter,
|
|
Prefix: &root,
|
|
MaxKeys: &maxKeys,
|
|
Marker: marker,
|
|
}
|
|
var resp *s3.ListObjectsOutput
|
|
var err error
|
|
err = f.pacer.Call(func() (bool, error) {
|
|
resp, err = f.c.ListObjects(&req)
|
|
return shouldRetry(err)
|
|
})
|
|
if err != nil {
|
|
if awsErr, ok := err.(awserr.RequestFailure); ok {
|
|
if awsErr.StatusCode() == http.StatusNotFound {
|
|
err = fs.ErrorDirNotFound
|
|
}
|
|
}
|
|
return err
|
|
}
|
|
rootLength := len(f.root)
|
|
if !recurse {
|
|
for _, commonPrefix := range resp.CommonPrefixes {
|
|
if commonPrefix.Prefix == nil {
|
|
fs.Logf(f, "Nil common prefix received")
|
|
continue
|
|
}
|
|
remote := *commonPrefix.Prefix
|
|
if !strings.HasPrefix(remote, f.root) {
|
|
fs.Logf(f, "Odd name received %q", remote)
|
|
continue
|
|
}
|
|
remote = remote[rootLength:]
|
|
if strings.HasSuffix(remote, "/") {
|
|
remote = remote[:len(remote)-1]
|
|
}
|
|
err = fn(remote, &s3.Object{Key: &remote}, true)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
for _, object := range resp.Contents {
|
|
key := aws.StringValue(object.Key)
|
|
if !strings.HasPrefix(key, f.root) {
|
|
fs.Logf(f, "Odd name received %q", key)
|
|
continue
|
|
}
|
|
remote := key[rootLength:]
|
|
// is this a directory marker?
|
|
if (strings.HasSuffix(remote, "/") || remote == "") && *object.Size == 0 {
|
|
if recurse && remote != "" {
|
|
// add a directory in if --fast-list since will have no prefixes
|
|
remote = remote[:len(remote)-1]
|
|
err = fn(remote, &s3.Object{Key: &remote}, true)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
continue // skip directory marker
|
|
}
|
|
err = fn(remote, object, false)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
if !aws.BoolValue(resp.IsTruncated) {
|
|
break
|
|
}
|
|
// Use NextMarker if set, otherwise use last Key
|
|
if resp.NextMarker == nil || *resp.NextMarker == "" {
|
|
if len(resp.Contents) == 0 {
|
|
return errors.New("s3 protocol error: received listing with IsTruncated set, no NextMarker and no Contents")
|
|
}
|
|
marker = resp.Contents[len(resp.Contents)-1].Key
|
|
} else {
|
|
marker = resp.NextMarker
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Convert a list item into a DirEntry
|
|
func (f *Fs) itemToDirEntry(remote string, object *s3.Object, isDirectory bool) (fs.DirEntry, error) {
|
|
if isDirectory {
|
|
size := int64(0)
|
|
if object.Size != nil {
|
|
size = *object.Size
|
|
}
|
|
d := fs.NewDir(remote, time.Time{}).SetSize(size)
|
|
return d, nil
|
|
}
|
|
o, err := f.newObjectWithInfo(remote, object)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return o, nil
|
|
}
|
|
|
|
// mark the bucket as being OK
|
|
func (f *Fs) markBucketOK() {
|
|
if f.bucket != "" {
|
|
f.bucketOKMu.Lock()
|
|
f.bucketOK = true
|
|
f.bucketDeleted = false
|
|
f.bucketOKMu.Unlock()
|
|
}
|
|
}
|
|
|
|
// listDir lists files and directories to out
|
|
func (f *Fs) listDir(dir string) (entries fs.DirEntries, err error) {
|
|
// List the objects and directories
|
|
err = f.list(dir, false, func(remote string, object *s3.Object, isDirectory bool) error {
|
|
entry, err := f.itemToDirEntry(remote, object, isDirectory)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if entry != nil {
|
|
entries = append(entries, entry)
|
|
}
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
// bucket must be present if listing succeeded
|
|
f.markBucketOK()
|
|
return entries, nil
|
|
}
|
|
|
|
// listBuckets lists the buckets to out
|
|
func (f *Fs) listBuckets(dir string) (entries fs.DirEntries, err error) {
|
|
if dir != "" {
|
|
return nil, fs.ErrorListBucketRequired
|
|
}
|
|
req := s3.ListBucketsInput{}
|
|
var resp *s3.ListBucketsOutput
|
|
err = f.pacer.Call(func() (bool, error) {
|
|
resp, err = f.c.ListBuckets(&req)
|
|
return shouldRetry(err)
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
for _, bucket := range resp.Buckets {
|
|
d := fs.NewDir(aws.StringValue(bucket.Name), aws.TimeValue(bucket.CreationDate))
|
|
entries = append(entries, d)
|
|
}
|
|
return entries, nil
|
|
}
|
|
|
|
// List the objects and directories in dir into entries. The
|
|
// entries can be returned in any order but should be for a
|
|
// complete directory.
|
|
//
|
|
// dir should be "" to list the root, and should not have
|
|
// trailing slashes.
|
|
//
|
|
// This should return ErrDirNotFound if the directory isn't
|
|
// found.
|
|
func (f *Fs) List(dir string) (entries fs.DirEntries, err error) {
|
|
if f.bucket == "" {
|
|
return f.listBuckets(dir)
|
|
}
|
|
return f.listDir(dir)
|
|
}
|
|
|
|
// ListR lists the objects and directories of the Fs starting
|
|
// from dir recursively into out.
|
|
//
|
|
// dir should be "" to start from the root, and should not
|
|
// have trailing slashes.
|
|
//
|
|
// This should return ErrDirNotFound if the directory isn't
|
|
// found.
|
|
//
|
|
// It should call callback for each tranche of entries read.
|
|
// These need not be returned in any particular order. If
|
|
// callback returns an error then the listing will stop
|
|
// immediately.
|
|
//
|
|
// Don't implement this unless you have a more efficient way
|
|
// of listing recursively that doing a directory traversal.
|
|
func (f *Fs) ListR(dir string, callback fs.ListRCallback) (err error) {
|
|
if f.bucket == "" {
|
|
return fs.ErrorListBucketRequired
|
|
}
|
|
list := walk.NewListRHelper(callback)
|
|
err = f.list(dir, true, func(remote string, object *s3.Object, isDirectory bool) error {
|
|
entry, err := f.itemToDirEntry(remote, object, isDirectory)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return list.Add(entry)
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
// bucket must be present if listing succeeded
|
|
f.markBucketOK()
|
|
return list.Flush()
|
|
}
|
|
|
|
// Put the Object into the bucket
|
|
func (f *Fs) Put(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error) {
|
|
// Temporary Object under construction
|
|
fs := &Object{
|
|
fs: f,
|
|
remote: src.Remote(),
|
|
}
|
|
return fs, fs.Update(in, src, options...)
|
|
}
|
|
|
|
// PutStream uploads to the remote path with the modTime given of indeterminate size
|
|
func (f *Fs) PutStream(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error) {
|
|
return f.Put(in, src, options...)
|
|
}
|
|
|
|
// Check if the bucket exists
|
|
//
|
|
// NB this can return incorrect results if called immediately after bucket deletion
|
|
func (f *Fs) dirExists() (bool, error) {
|
|
req := s3.HeadBucketInput{
|
|
Bucket: &f.bucket,
|
|
}
|
|
err := f.pacer.Call(func() (bool, error) {
|
|
_, err := f.c.HeadBucket(&req)
|
|
return shouldRetry(err)
|
|
})
|
|
if err == nil {
|
|
return true, nil
|
|
}
|
|
if err, ok := err.(awserr.RequestFailure); ok {
|
|
if err.StatusCode() == http.StatusNotFound {
|
|
return false, nil
|
|
}
|
|
}
|
|
return false, err
|
|
}
|
|
|
|
// Mkdir creates the bucket if it doesn't exist
|
|
func (f *Fs) Mkdir(dir string) error {
|
|
f.bucketOKMu.Lock()
|
|
defer f.bucketOKMu.Unlock()
|
|
if f.bucketOK {
|
|
return nil
|
|
}
|
|
if !f.bucketDeleted {
|
|
exists, err := f.dirExists()
|
|
if err == nil {
|
|
f.bucketOK = exists
|
|
}
|
|
if err != nil || exists {
|
|
return err
|
|
}
|
|
}
|
|
req := s3.CreateBucketInput{
|
|
Bucket: &f.bucket,
|
|
ACL: &f.opt.BucketACL,
|
|
}
|
|
if f.opt.LocationConstraint != "" {
|
|
req.CreateBucketConfiguration = &s3.CreateBucketConfiguration{
|
|
LocationConstraint: &f.opt.LocationConstraint,
|
|
}
|
|
}
|
|
err := f.pacer.Call(func() (bool, error) {
|
|
_, err := f.c.CreateBucket(&req)
|
|
return shouldRetry(err)
|
|
})
|
|
if err, ok := err.(awserr.Error); ok {
|
|
if err.Code() == "BucketAlreadyOwnedByYou" {
|
|
err = nil
|
|
}
|
|
}
|
|
if err == nil {
|
|
f.bucketOK = true
|
|
f.bucketDeleted = false
|
|
fs.Infof(f, "Bucket created with ACL %q", *req.ACL)
|
|
}
|
|
return err
|
|
}
|
|
|
|
// Rmdir deletes the bucket if the fs is at the root
|
|
//
|
|
// Returns an error if it isn't empty
|
|
func (f *Fs) Rmdir(dir string) error {
|
|
f.bucketOKMu.Lock()
|
|
defer f.bucketOKMu.Unlock()
|
|
if f.root != "" || dir != "" {
|
|
return nil
|
|
}
|
|
req := s3.DeleteBucketInput{
|
|
Bucket: &f.bucket,
|
|
}
|
|
err := f.pacer.Call(func() (bool, error) {
|
|
_, err := f.c.DeleteBucket(&req)
|
|
return shouldRetry(err)
|
|
})
|
|
if err == nil {
|
|
f.bucketOK = false
|
|
f.bucketDeleted = true
|
|
fs.Infof(f, "Bucket deleted")
|
|
}
|
|
return err
|
|
}
|
|
|
|
// Precision of the remote
|
|
func (f *Fs) Precision() time.Duration {
|
|
return time.Nanosecond
|
|
}
|
|
|
|
// pathEscape escapes s as for a URL path. It uses rest.URLPathEscape
|
|
// but also escapes '+' for S3 and Digital Ocean spaces compatibility
|
|
func pathEscape(s string) string {
|
|
return strings.Replace(rest.URLPathEscape(s), "+", "%2B", -1)
|
|
}
|
|
|
|
// Copy src to this remote using server side copy operations.
|
|
//
|
|
// This is stored with the remote path given
|
|
//
|
|
// It returns the destination Object and a possible error
|
|
//
|
|
// Will only be called if src.Fs().Name() == f.Name()
|
|
//
|
|
// If it isn't possible then return fs.ErrorCantCopy
|
|
func (f *Fs) Copy(src fs.Object, remote string) (fs.Object, error) {
|
|
err := f.Mkdir("")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
srcObj, ok := src.(*Object)
|
|
if !ok {
|
|
fs.Debugf(src, "Can't copy - not same remote type")
|
|
return nil, fs.ErrorCantCopy
|
|
}
|
|
srcFs := srcObj.fs
|
|
key := f.root + remote
|
|
source := pathEscape(srcFs.bucket + "/" + srcFs.root + srcObj.remote)
|
|
req := s3.CopyObjectInput{
|
|
Bucket: &f.bucket,
|
|
ACL: &f.opt.ACL,
|
|
Key: &key,
|
|
CopySource: &source,
|
|
MetadataDirective: aws.String(s3.MetadataDirectiveCopy),
|
|
}
|
|
if f.opt.ServerSideEncryption != "" {
|
|
req.ServerSideEncryption = &f.opt.ServerSideEncryption
|
|
}
|
|
if f.opt.SSEKMSKeyID != "" {
|
|
req.SSEKMSKeyId = &f.opt.SSEKMSKeyID
|
|
}
|
|
if f.opt.StorageClass != "" {
|
|
req.StorageClass = &f.opt.StorageClass
|
|
}
|
|
err = f.pacer.Call(func() (bool, error) {
|
|
_, err = f.c.CopyObject(&req)
|
|
return shouldRetry(err)
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return f.NewObject(remote)
|
|
}
|
|
|
|
// Hashes returns the supported hash sets.
|
|
func (f *Fs) Hashes() hash.Set {
|
|
return hash.Set(hash.MD5)
|
|
}
|
|
|
|
// ------------------------------------------------------------
|
|
|
|
// Fs returns the parent Fs
|
|
func (o *Object) Fs() fs.Info {
|
|
return o.fs
|
|
}
|
|
|
|
// Return a string version
|
|
func (o *Object) String() string {
|
|
if o == nil {
|
|
return "<nil>"
|
|
}
|
|
return o.remote
|
|
}
|
|
|
|
// Remote returns the remote path
|
|
func (o *Object) Remote() string {
|
|
return o.remote
|
|
}
|
|
|
|
var matchMd5 = regexp.MustCompile(`^[0-9a-f]{32}$`)
|
|
|
|
// Hash returns the Md5sum of an object returning a lowercase hex string
|
|
func (o *Object) Hash(t hash.Type) (string, error) {
|
|
if t != hash.MD5 {
|
|
return "", hash.ErrUnsupported
|
|
}
|
|
hash := strings.Trim(strings.ToLower(o.etag), `"`)
|
|
// Check the etag is a valid md5sum
|
|
if !matchMd5.MatchString(hash) {
|
|
err := o.readMetaData()
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
if md5sum, ok := o.meta[metaMD5Hash]; ok {
|
|
md5sumBytes, err := base64.StdEncoding.DecodeString(*md5sum)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
hash = hex.EncodeToString(md5sumBytes)
|
|
} else {
|
|
hash = ""
|
|
}
|
|
}
|
|
return hash, nil
|
|
}
|
|
|
|
// Size returns the size of an object in bytes
|
|
func (o *Object) Size() int64 {
|
|
return o.bytes
|
|
}
|
|
|
|
// readMetaData gets the metadata if it hasn't already been fetched
|
|
//
|
|
// it also sets the info
|
|
func (o *Object) readMetaData() (err error) {
|
|
if o.meta != nil {
|
|
return nil
|
|
}
|
|
key := o.fs.root + o.remote
|
|
req := s3.HeadObjectInput{
|
|
Bucket: &o.fs.bucket,
|
|
Key: &key,
|
|
}
|
|
var resp *s3.HeadObjectOutput
|
|
err = o.fs.pacer.Call(func() (bool, error) {
|
|
var err error
|
|
resp, err = o.fs.c.HeadObject(&req)
|
|
return shouldRetry(err)
|
|
})
|
|
if err != nil {
|
|
if awsErr, ok := err.(awserr.RequestFailure); ok {
|
|
if awsErr.StatusCode() == http.StatusNotFound {
|
|
return fs.ErrorObjectNotFound
|
|
}
|
|
}
|
|
return err
|
|
}
|
|
var size int64
|
|
// Ignore missing Content-Length assuming it is 0
|
|
// Some versions of ceph do this due their apache proxies
|
|
if resp.ContentLength != nil {
|
|
size = *resp.ContentLength
|
|
}
|
|
o.etag = aws.StringValue(resp.ETag)
|
|
o.bytes = size
|
|
o.meta = resp.Metadata
|
|
if resp.LastModified == nil {
|
|
fs.Logf(o, "Failed to read last modified from HEAD: %v", err)
|
|
o.lastModified = time.Now()
|
|
} else {
|
|
o.lastModified = *resp.LastModified
|
|
}
|
|
o.mimeType = aws.StringValue(resp.ContentType)
|
|
return nil
|
|
}
|
|
|
|
// ModTime returns the modification time of the object
|
|
//
|
|
// It attempts to read the objects mtime and if that isn't present the
|
|
// LastModified returned in the http headers
|
|
func (o *Object) ModTime() time.Time {
|
|
if fs.Config.UseServerModTime {
|
|
return o.lastModified
|
|
}
|
|
err := o.readMetaData()
|
|
if err != nil {
|
|
fs.Logf(o, "Failed to read metadata: %v", err)
|
|
return time.Now()
|
|
}
|
|
// read mtime out of metadata if available
|
|
d, ok := o.meta[metaMtime]
|
|
if !ok || d == nil {
|
|
// fs.Debugf(o, "No metadata")
|
|
return o.lastModified
|
|
}
|
|
modTime, err := swift.FloatStringToTime(*d)
|
|
if err != nil {
|
|
fs.Logf(o, "Failed to read mtime from object: %v", err)
|
|
return o.lastModified
|
|
}
|
|
return modTime
|
|
}
|
|
|
|
// SetModTime sets the modification time of the local fs object
|
|
func (o *Object) SetModTime(modTime time.Time) error {
|
|
err := o.readMetaData()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
o.meta[metaMtime] = aws.String(swift.TimeToFloatString(modTime))
|
|
|
|
if o.bytes >= maxSizeForCopy {
|
|
fs.Debugf(o, "SetModTime is unsupported for objects bigger than %v bytes", fs.SizeSuffix(maxSizeForCopy))
|
|
return nil
|
|
}
|
|
|
|
// Guess the content type
|
|
mimeType := fs.MimeType(o)
|
|
|
|
// Copy the object to itself to update the metadata
|
|
key := o.fs.root + o.remote
|
|
sourceKey := o.fs.bucket + "/" + key
|
|
directive := s3.MetadataDirectiveReplace // replace metadata with that passed in
|
|
req := s3.CopyObjectInput{
|
|
Bucket: &o.fs.bucket,
|
|
ACL: &o.fs.opt.ACL,
|
|
Key: &key,
|
|
ContentType: &mimeType,
|
|
CopySource: aws.String(pathEscape(sourceKey)),
|
|
Metadata: o.meta,
|
|
MetadataDirective: &directive,
|
|
}
|
|
if o.fs.opt.ServerSideEncryption != "" {
|
|
req.ServerSideEncryption = &o.fs.opt.ServerSideEncryption
|
|
}
|
|
if o.fs.opt.SSEKMSKeyID != "" {
|
|
req.SSEKMSKeyId = &o.fs.opt.SSEKMSKeyID
|
|
}
|
|
if o.fs.opt.StorageClass != "" {
|
|
req.StorageClass = &o.fs.opt.StorageClass
|
|
}
|
|
err = o.fs.pacer.Call(func() (bool, error) {
|
|
_, err := o.fs.c.CopyObject(&req)
|
|
return shouldRetry(err)
|
|
})
|
|
return err
|
|
}
|
|
|
|
// Storable raturns a boolean indicating if this object is storable
|
|
func (o *Object) Storable() bool {
|
|
return true
|
|
}
|
|
|
|
// Open an object for read
|
|
func (o *Object) Open(options ...fs.OpenOption) (in io.ReadCloser, err error) {
|
|
key := o.fs.root + o.remote
|
|
req := s3.GetObjectInput{
|
|
Bucket: &o.fs.bucket,
|
|
Key: &key,
|
|
}
|
|
for _, option := range options {
|
|
switch option.(type) {
|
|
case *fs.RangeOption, *fs.SeekOption:
|
|
_, value := option.Header()
|
|
req.Range = &value
|
|
default:
|
|
if option.Mandatory() {
|
|
fs.Logf(o, "Unsupported mandatory option: %v", option)
|
|
}
|
|
}
|
|
}
|
|
var resp *s3.GetObjectOutput
|
|
err = o.fs.pacer.Call(func() (bool, error) {
|
|
var err error
|
|
resp, err = o.fs.c.GetObject(&req)
|
|
return shouldRetry(err)
|
|
})
|
|
if err, ok := err.(awserr.RequestFailure); ok {
|
|
if err.Code() == "InvalidObjectState" {
|
|
return nil, errors.Errorf("Object in GLACIER, restore first: %v", key)
|
|
}
|
|
}
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return resp.Body, nil
|
|
}
|
|
|
|
// Update the Object from in with modTime and size
|
|
func (o *Object) Update(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) error {
|
|
err := o.fs.Mkdir("")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
modTime := src.ModTime()
|
|
size := src.Size()
|
|
|
|
multipart := size < 0 || size >= int64(o.fs.opt.UploadCutoff)
|
|
var uploader *s3manager.Uploader
|
|
if multipart {
|
|
uploader = s3manager.NewUploader(o.fs.ses, func(u *s3manager.Uploader) {
|
|
u.Concurrency = o.fs.opt.UploadConcurrency
|
|
u.LeavePartsOnError = false
|
|
u.S3 = o.fs.c
|
|
u.PartSize = int64(o.fs.opt.ChunkSize)
|
|
|
|
if size == -1 {
|
|
// Make parts as small as possible while still being able to upload to the
|
|
// S3 file size limit. Rounded up to nearest MB.
|
|
u.PartSize = (((maxFileSize / s3manager.MaxUploadParts) >> 20) + 1) << 20
|
|
return
|
|
}
|
|
// Adjust PartSize until the number of parts is small enough.
|
|
if size/u.PartSize >= s3manager.MaxUploadParts {
|
|
// Calculate partition size rounded up to the nearest MB
|
|
u.PartSize = (((size / s3manager.MaxUploadParts) >> 20) + 1) << 20
|
|
}
|
|
})
|
|
}
|
|
|
|
// Set the mtime in the meta data
|
|
metadata := map[string]*string{
|
|
metaMtime: aws.String(swift.TimeToFloatString(modTime)),
|
|
}
|
|
|
|
// read the md5sum if available for non multpart and if
|
|
// disable checksum isn't present.
|
|
var md5sum string
|
|
if !multipart || !o.fs.opt.DisableChecksum {
|
|
hash, err := src.Hash(hash.MD5)
|
|
if err == nil && matchMd5.MatchString(hash) {
|
|
hashBytes, err := hex.DecodeString(hash)
|
|
if err == nil {
|
|
md5sum = base64.StdEncoding.EncodeToString(hashBytes)
|
|
if multipart {
|
|
metadata[metaMD5Hash] = &md5sum
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Guess the content type
|
|
mimeType := fs.MimeType(src)
|
|
|
|
key := o.fs.root + o.remote
|
|
if multipart {
|
|
req := s3manager.UploadInput{
|
|
Bucket: &o.fs.bucket,
|
|
ACL: &o.fs.opt.ACL,
|
|
Key: &key,
|
|
Body: in,
|
|
ContentType: &mimeType,
|
|
Metadata: metadata,
|
|
//ContentLength: &size,
|
|
}
|
|
if o.fs.opt.ServerSideEncryption != "" {
|
|
req.ServerSideEncryption = &o.fs.opt.ServerSideEncryption
|
|
}
|
|
if o.fs.opt.SSEKMSKeyID != "" {
|
|
req.SSEKMSKeyId = &o.fs.opt.SSEKMSKeyID
|
|
}
|
|
if o.fs.opt.StorageClass != "" {
|
|
req.StorageClass = &o.fs.opt.StorageClass
|
|
}
|
|
err = o.fs.pacer.CallNoRetry(func() (bool, error) {
|
|
_, err = uploader.Upload(&req)
|
|
return shouldRetry(err)
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
} else {
|
|
req := s3.PutObjectInput{
|
|
Bucket: &o.fs.bucket,
|
|
ACL: &o.fs.opt.ACL,
|
|
Key: &key,
|
|
ContentType: &mimeType,
|
|
Metadata: metadata,
|
|
}
|
|
if md5sum != "" {
|
|
req.ContentMD5 = &md5sum
|
|
}
|
|
if o.fs.opt.ServerSideEncryption != "" {
|
|
req.ServerSideEncryption = &o.fs.opt.ServerSideEncryption
|
|
}
|
|
if o.fs.opt.SSEKMSKeyID != "" {
|
|
req.SSEKMSKeyId = &o.fs.opt.SSEKMSKeyID
|
|
}
|
|
if o.fs.opt.StorageClass != "" {
|
|
req.StorageClass = &o.fs.opt.StorageClass
|
|
}
|
|
|
|
// Create the request
|
|
putObj, _ := o.fs.c.PutObjectRequest(&req)
|
|
|
|
// Sign it so we can upload using a presigned request.
|
|
//
|
|
// Note the SDK doesn't currently support streaming to
|
|
// PutObject so we'll use this work-around.
|
|
url, headers, err := putObj.PresignRequest(15 * time.Minute)
|
|
if err != nil {
|
|
return errors.Wrap(err, "s3 upload: sign request")
|
|
}
|
|
|
|
// Set request to nil if empty so as not to make chunked encoding
|
|
if size == 0 {
|
|
in = nil
|
|
}
|
|
|
|
// create the vanilla http request
|
|
httpReq, err := http.NewRequest("PUT", url, in)
|
|
if err != nil {
|
|
return errors.Wrap(err, "s3 upload: new request")
|
|
}
|
|
|
|
// set the headers we signed and the length
|
|
httpReq.Header = headers
|
|
httpReq.ContentLength = size
|
|
|
|
err = o.fs.pacer.CallNoRetry(func() (bool, error) {
|
|
resp, err := o.fs.srv.Do(httpReq)
|
|
if err != nil {
|
|
return shouldRetry(err)
|
|
}
|
|
body, err := rest.ReadBody(resp)
|
|
if err != nil {
|
|
return shouldRetry(err)
|
|
}
|
|
if resp.StatusCode >= 200 && resp.StatusCode < 299 {
|
|
return false, nil
|
|
}
|
|
err = errors.Errorf("s3 upload: %s: %s", resp.Status, body)
|
|
return fserrors.ShouldRetryHTTP(resp, retryErrorCodes), err
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
// Read the metadata from the newly created object
|
|
o.meta = nil // wipe old metadata
|
|
err = o.readMetaData()
|
|
return err
|
|
}
|
|
|
|
// Remove an object
|
|
func (o *Object) Remove() error {
|
|
key := o.fs.root + o.remote
|
|
req := s3.DeleteObjectInput{
|
|
Bucket: &o.fs.bucket,
|
|
Key: &key,
|
|
}
|
|
err := o.fs.pacer.Call(func() (bool, error) {
|
|
_, err := o.fs.c.DeleteObject(&req)
|
|
return shouldRetry(err)
|
|
})
|
|
return err
|
|
}
|
|
|
|
// MimeType of an Object if known, "" otherwise
|
|
func (o *Object) MimeType() string {
|
|
err := o.readMetaData()
|
|
if err != nil {
|
|
fs.Logf(o, "Failed to read metadata: %v", err)
|
|
return ""
|
|
}
|
|
return o.mimeType
|
|
}
|
|
|
|
// Check the interfaces are satisfied
|
|
var (
|
|
_ fs.Fs = &Fs{}
|
|
_ fs.Copier = &Fs{}
|
|
_ fs.PutStreamer = &Fs{}
|
|
_ fs.ListRer = &Fs{}
|
|
_ fs.Object = &Object{}
|
|
_ fs.MimeTyper = &Object{}
|
|
)
|