mirror of
https://github.com/rclone/rclone.git
synced 2024-11-23 08:54:10 +01:00
54c0f17f2a
This error was caused by rclone supplying an empty `x-ms-blob-public-access:` header when creating a container for private access, rather than omitting it completely. This is a valid way of specifying containers should be private, but if the storage account has the flag "Blob public access" unset then it gives "409 Public access is not permitted on this storage account". This patch fixes the problem by only supplying the header if the access is set. Fixes #6645
2396 lines
76 KiB
Go
2396 lines
76 KiB
Go
//go:build !plan9 && !solaris && !js && go1.18
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// +build !plan9,!solaris,!js,go1.18
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// Package azureblob provides an interface to the Microsoft Azure blob object storage system
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package azureblob
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/* FIXME
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Note these Azure SDK bugs which are affecting the backend
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azblob UploadStream produces panic: send on closed channel if input stream has error #19612
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https://github.com/Azure/azure-sdk-for-go/issues/19612
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- FIXED by re-implementing UploadStream
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azblob: when using SharedKey credentials, can't reference some blob names with ? in #19613
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https://github.com/Azure/azure-sdk-for-go/issues/19613
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- FIXED by url encoding getBlobSVC and getBlockBlobSVC
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Azure Blob Storage paths are not URL-escaped #19475
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https://github.com/Azure/azure-sdk-for-go/issues/19475
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- FIXED by url encoding getBlobSVC and getBlockBlobSVC
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Controlling TransferManager #19579
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https://github.com/Azure/azure-sdk-for-go/issues/19579
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- FIXED by re-implementing UploadStream
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azblob: blob.StartCopyFromURL doesn't work with UTF-8 characters in the source blob #19614
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https://github.com/Azure/azure-sdk-for-go/issues/19614
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- FIXED by url encoding getBlobSVC and getBlockBlobSVC
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*/
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import (
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"bytes"
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"context"
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"crypto/md5"
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"encoding/base64"
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"encoding/hex"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"os"
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"path"
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"strconv"
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"strings"
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"sync"
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"time"
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"github.com/Azure/azure-sdk-for-go/sdk/azcore"
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"github.com/Azure/azure-sdk-for-go/sdk/azcore/policy"
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"github.com/Azure/azure-sdk-for-go/sdk/azidentity"
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"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob/blob"
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"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob/bloberror"
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"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob/blockblob"
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"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob/container"
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"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob/sas"
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"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob/service"
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"github.com/rclone/rclone/fs"
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"github.com/rclone/rclone/fs/accounting"
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"github.com/rclone/rclone/fs/chunksize"
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"github.com/rclone/rclone/fs/config"
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"github.com/rclone/rclone/fs/config/configmap"
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"github.com/rclone/rclone/fs/config/configstruct"
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"github.com/rclone/rclone/fs/config/obscure"
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"github.com/rclone/rclone/fs/fserrors"
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"github.com/rclone/rclone/fs/fshttp"
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"github.com/rclone/rclone/fs/hash"
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"github.com/rclone/rclone/fs/walk"
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"github.com/rclone/rclone/lib/bucket"
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"github.com/rclone/rclone/lib/encoder"
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"github.com/rclone/rclone/lib/env"
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"github.com/rclone/rclone/lib/pacer"
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"github.com/rclone/rclone/lib/pool"
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"github.com/rclone/rclone/lib/readers"
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"golang.org/x/sync/errgroup"
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)
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const (
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minSleep = 10 * time.Millisecond
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maxSleep = 10 * time.Second
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decayConstant = 1 // bigger for slower decay, exponential
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maxListChunkSize = 5000 // number of items to read at once
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modTimeKey = "mtime"
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timeFormatIn = time.RFC3339
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timeFormatOut = "2006-01-02T15:04:05.000000000Z07:00"
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storageDefaultBaseURL = "blob.core.windows.net"
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defaultChunkSize = 4 * fs.Mebi
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defaultAccessTier = blob.AccessTier("") // FIXME AccessTierNone
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// Default storage account, key and blob endpoint for emulator support,
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// though it is a base64 key checked in here, it is publicly available secret.
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emulatorAccount = "devstoreaccount1"
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emulatorAccountKey = "Eby8vdM02xNOcqFlqUwJPLlmEtlCDXJ1OUzFT50uSRZ6IFsuFq2UVErCz4I6tq/K1SZFPTOtr/KBHBeksoGMGw=="
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emulatorBlobEndpoint = "http://127.0.0.1:10000/devstoreaccount1"
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memoryPoolFlushTime = fs.Duration(time.Minute) // flush the cached buffers after this long
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memoryPoolUseMmap = false
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)
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var (
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errCantUpdateArchiveTierBlobs = fserrors.NoRetryError(errors.New("can't update archive tier blob without --azureblob-archive-tier-delete"))
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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: "azureblob",
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Description: "Microsoft Azure Blob Storage",
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NewFs: NewFs,
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Options: []fs.Option{{
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Name: "account",
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Help: `Azure Storage Account Name.
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Set this to the Azure Storage Account Name in use.
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Leave blank to use SAS URL or Emulator, otherwise it needs to be set.
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If this is blank and if env_auth is set it will be read from the
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environment variable ` + "`AZURE_STORAGE_ACCOUNT_NAME`" + ` if possible.
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`,
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}, {
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Name: "env_auth",
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Help: `Read credentials from runtime (environment variables, CLI or MSI).
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See the [authentication docs](/azureblob#authentication) for full info.`,
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Default: false,
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}, {
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Name: "key",
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Help: `Storage Account Shared Key.
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Leave blank to use SAS URL or Emulator.`,
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}, {
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Name: "sas_url",
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Help: `SAS URL for container level access only.
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Leave blank if using account/key or Emulator.`,
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}, {
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Name: "tenant",
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Help: `ID of the service principal's tenant. Also called its directory ID.
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Set this if using
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- Service principal with client secret
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- Service principal with certificate
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- User with username and password
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`,
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}, {
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Name: "client_id",
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Help: `The ID of the client in use.
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Set this if using
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- Service principal with client secret
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- Service principal with certificate
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- User with username and password
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`,
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}, {
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Name: "client_secret",
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Help: `One of the service principal's client secrets
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Set this if using
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- Service principal with client secret
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`,
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}, {
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Name: "client_certificate_path",
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Help: `Path to a PEM or PKCS12 certificate file including the private key.
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Set this if using
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- Service principal with certificate
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`,
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}, {
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Name: "client_certificate_password",
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Help: `Password for the certificate file (optional).
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Optionally set this if using
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- Service principal with certificate
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And the certificate has a password.
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`,
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IsPassword: true,
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}, {
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Name: "client_send_certificate_chain",
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Help: `Send the certificate chain when using certificate auth.
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Specifies whether an authentication request will include an x5c header
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to support subject name / issuer based authentication. When set to
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true, authentication requests include the x5c header.
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Optionally set this if using
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- Service principal with certificate
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`,
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Default: false,
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Advanced: true,
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}, {
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Name: "username",
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Help: `User name (usually an email address)
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Set this if using
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- User with username and password
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`,
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Advanced: true,
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}, {
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Name: "password",
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Help: `The user's password
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Set this if using
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- User with username and password
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`,
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IsPassword: true,
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Advanced: true,
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}, {
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Name: "service_principal_file",
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Help: `Path to file containing credentials for use with a service principal.
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Leave blank normally. Needed only if you want to use a service principal instead of interactive login.
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$ az ad sp create-for-rbac --name "<name>" \
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--role "Storage Blob Data Owner" \
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--scopes "/subscriptions/<subscription>/resourceGroups/<resource-group>/providers/Microsoft.Storage/storageAccounts/<storage-account>/blobServices/default/containers/<container>" \
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> azure-principal.json
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See ["Create an Azure service principal"](https://docs.microsoft.com/en-us/cli/azure/create-an-azure-service-principal-azure-cli) and ["Assign an Azure role for access to blob data"](https://docs.microsoft.com/en-us/azure/storage/common/storage-auth-aad-rbac-cli) pages for more details.
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It may be more convenient to put the credentials directly into the
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rclone config file under the ` + "`client_id`, `tenant` and `client_secret`" + `
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keys instead of setting ` + "`service_principal_file`" + `.
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`,
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Advanced: true,
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}, {
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Name: "use_msi",
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Help: `Use a managed service identity to authenticate (only works in Azure).
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When true, use a [managed service identity](https://docs.microsoft.com/en-us/azure/active-directory/managed-identities-azure-resources/)
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to authenticate to Azure Storage instead of a SAS token or account key.
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If the VM(SS) on which this program is running has a system-assigned identity, it will
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be used by default. If the resource has no system-assigned but exactly one user-assigned identity,
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the user-assigned identity will be used by default. If the resource has multiple user-assigned
|
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identities, the identity to use must be explicitly specified using exactly one of the msi_object_id,
|
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msi_client_id, or msi_mi_res_id parameters.`,
|
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Default: false,
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Advanced: true,
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}, {
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Name: "msi_object_id",
|
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Help: "Object ID of the user-assigned MSI to use, if any.\n\nLeave blank if msi_client_id or msi_mi_res_id specified.",
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Advanced: true,
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}, {
|
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Name: "msi_client_id",
|
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Help: "Object ID of the user-assigned MSI to use, if any.\n\nLeave blank if msi_object_id or msi_mi_res_id specified.",
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Advanced: true,
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}, {
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Name: "msi_mi_res_id",
|
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Help: "Azure resource ID of the user-assigned MSI to use, if any.\n\nLeave blank if msi_client_id or msi_object_id specified.",
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Advanced: true,
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}, {
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Name: "use_emulator",
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Help: "Uses local storage emulator if provided as 'true'.\n\nLeave blank if using real azure storage endpoint.",
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Default: false,
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Advanced: true,
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}, {
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Name: "endpoint",
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Help: "Endpoint for the service.\n\nLeave blank normally.",
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Advanced: true,
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}, {
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Name: "upload_cutoff",
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Help: "Cutoff for switching to chunked upload (<= 256 MiB) (deprecated).",
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Advanced: true,
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}, {
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Name: "chunk_size",
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Help: `Upload chunk size.
|
|
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Note that this is stored in memory and there may be up to
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"--transfers" * "--azureblob-upload-concurrency" chunks stored at once
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in memory.`,
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Default: defaultChunkSize,
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Advanced: true,
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}, {
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Name: "upload_concurrency",
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Help: `Concurrency for multipart uploads.
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This is the number of chunks of the same file that are uploaded
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concurrently.
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If you are uploading small numbers of large files over high-speed
|
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links and these uploads do not fully utilize your bandwidth, then
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increasing this may help to speed up the transfers.
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In tests, upload speed increases almost linearly with upload
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concurrency. For example to fill a gigabit pipe it may be necessary to
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raise this to 64. Note that this will use more memory.
|
|
|
|
Note that chunks are stored in memory and there may be up to
|
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"--transfers" * "--azureblob-upload-concurrency" chunks stored at once
|
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in memory.`,
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Default: 16,
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Advanced: true,
|
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}, {
|
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Name: "list_chunk",
|
|
Help: `Size of blob list.
|
|
|
|
This sets the number of blobs requested in each listing chunk. Default
|
|
is the maximum, 5000. "List blobs" requests are permitted 2 minutes
|
|
per megabyte to complete. If an operation is taking longer than 2
|
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minutes per megabyte on average, it will time out (
|
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[source](https://docs.microsoft.com/en-us/rest/api/storageservices/setting-timeouts-for-blob-service-operations#exceptions-to-default-timeout-interval)
|
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). This can be used to limit the number of blobs items to return, to
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avoid the time out.`,
|
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Default: maxListChunkSize,
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Advanced: true,
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}, {
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Name: "access_tier",
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Help: `Access tier of blob: hot, cool or archive.
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Archived blobs can be restored by setting access tier to hot or
|
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cool. Leave blank if you intend to use default access tier, which is
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set at account level
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If there is no "access tier" specified, rclone doesn't apply any tier.
|
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rclone performs "Set Tier" operation on blobs while uploading, if objects
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are not modified, specifying "access tier" to new one will have no effect.
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If blobs are in "archive tier" at remote, trying to perform data transfer
|
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operations from remote will not be allowed. User should first restore by
|
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tiering blob to "Hot" or "Cool".`,
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Advanced: true,
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}, {
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|
Name: "archive_tier_delete",
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Default: false,
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Help: fmt.Sprintf(`Delete archive tier blobs before overwriting.
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|
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Archive tier blobs cannot be updated. So without this flag, if you
|
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attempt to update an archive tier blob, then rclone will produce the
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error:
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%v
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|
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With this flag set then before rclone attempts to overwrite an archive
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tier blob, it will delete the existing blob before uploading its
|
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replacement. This has the potential for data loss if the upload fails
|
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(unlike updating a normal blob) and also may cost more since deleting
|
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archive tier blobs early may be chargable.
|
|
`, errCantUpdateArchiveTierBlobs),
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Advanced: true,
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}, {
|
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Name: "disable_checksum",
|
|
Help: `Don't store MD5 checksum with object metadata.
|
|
|
|
Normally rclone will calculate the MD5 checksum of the input before
|
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uploading it so it can add it to metadata on the object. This is great
|
|
for data integrity checking but can cause long delays for large files
|
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to start uploading.`,
|
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Default: false,
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Advanced: true,
|
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}, {
|
|
Name: "memory_pool_flush_time",
|
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Default: memoryPoolFlushTime,
|
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Advanced: true,
|
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Help: `How often internal memory buffer pools will be flushed.
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|
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Uploads which requires additional buffers (f.e multipart) will use memory pool for allocations.
|
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This option controls how often unused buffers will be removed from the pool.`,
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}, {
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Name: "memory_pool_use_mmap",
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|
Default: memoryPoolUseMmap,
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Advanced: true,
|
|
Help: `Whether to use mmap buffers in internal memory pool.`,
|
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}, {
|
|
Name: config.ConfigEncoding,
|
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Help: config.ConfigEncodingHelp,
|
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Advanced: true,
|
|
Default: (encoder.EncodeInvalidUtf8 |
|
|
encoder.EncodeSlash |
|
|
encoder.EncodeCtl |
|
|
encoder.EncodeDel |
|
|
encoder.EncodeBackSlash |
|
|
encoder.EncodeRightPeriod),
|
|
}, {
|
|
Name: "public_access",
|
|
Help: "Public access level of a container: blob or container.",
|
|
Default: "",
|
|
Examples: []fs.OptionExample{
|
|
{
|
|
Value: "",
|
|
Help: "The container and its blobs can be accessed only with an authorized request.\nIt's a default value.",
|
|
}, {
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Value: string(container.PublicAccessTypeBlob),
|
|
Help: "Blob data within this container can be read via anonymous request.",
|
|
}, {
|
|
Value: string(container.PublicAccessTypeContainer),
|
|
Help: "Allow full public read access for container and blob data.",
|
|
},
|
|
},
|
|
Advanced: true,
|
|
}, {
|
|
Name: "no_check_container",
|
|
Help: `If set, don't attempt to check the container exists or create it.
|
|
|
|
This can be useful when trying to minimise the number of transactions
|
|
rclone does if you know the container exists already.
|
|
`,
|
|
Default: false,
|
|
Advanced: true,
|
|
}, {
|
|
Name: "no_head_object",
|
|
Help: `If set, do not do HEAD before GET when getting objects.`,
|
|
Default: false,
|
|
Advanced: true,
|
|
}},
|
|
})
|
|
}
|
|
|
|
// Options defines the configuration for this backend
|
|
type Options struct {
|
|
Account string `config:"account"`
|
|
EnvAuth bool `config:"env_auth"`
|
|
Key string `config:"key"`
|
|
SASURL string `config:"sas_url"`
|
|
Tenant string `config:"tenant"`
|
|
ClientID string `config:"client_id"`
|
|
ClientSecret string `config:"client_secret"`
|
|
ClientCertificatePath string `config:"client_certificate_path"`
|
|
ClientCertificatePassword string `config:"client_certificate_password"`
|
|
ClientSendCertificateChain bool `config:"client_send_certificate_chain"`
|
|
Username string `config:"username"`
|
|
Password string `config:"password"`
|
|
ServicePrincipalFile string `config:"service_principal_file"`
|
|
UseMSI bool `config:"use_msi"`
|
|
MSIObjectID string `config:"msi_object_id"`
|
|
MSIClientID string `config:"msi_client_id"`
|
|
MSIResourceID string `config:"msi_mi_res_id"`
|
|
Endpoint string `config:"endpoint"`
|
|
ChunkSize fs.SizeSuffix `config:"chunk_size"`
|
|
UploadConcurrency int `config:"upload_concurrency"`
|
|
ListChunkSize uint `config:"list_chunk"`
|
|
AccessTier string `config:"access_tier"`
|
|
ArchiveTierDelete bool `config:"archive_tier_delete"`
|
|
UseEmulator bool `config:"use_emulator"`
|
|
DisableCheckSum bool `config:"disable_checksum"`
|
|
MemoryPoolFlushTime fs.Duration `config:"memory_pool_flush_time"`
|
|
MemoryPoolUseMmap bool `config:"memory_pool_use_mmap"`
|
|
Enc encoder.MultiEncoder `config:"encoding"`
|
|
PublicAccess string `config:"public_access"`
|
|
NoCheckContainer bool `config:"no_check_container"`
|
|
NoHeadObject bool `config:"no_head_object"`
|
|
}
|
|
|
|
// Fs represents a remote azure server
|
|
type Fs struct {
|
|
name string // name of this remote
|
|
root string // the path we are working on if any
|
|
opt Options // parsed config options
|
|
ci *fs.ConfigInfo // global config
|
|
features *fs.Features // optional features
|
|
cntSVCcacheMu sync.Mutex // mutex to protect cntSVCcache
|
|
cntSVCcache map[string]*container.Client // reference to containerClient per container
|
|
svc *service.Client // client to access azblob
|
|
rootContainer string // container part of root (if any)
|
|
rootDirectory string // directory part of root (if any)
|
|
isLimited bool // if limited to one container
|
|
cache *bucket.Cache // cache for container creation status
|
|
pacer *fs.Pacer // To pace and retry the API calls
|
|
uploadToken *pacer.TokenDispenser // control concurrency
|
|
pool *pool.Pool // memory pool
|
|
poolSize int64 // size of pages in memory pool
|
|
publicAccess container.PublicAccessType // Container Public Access Level
|
|
}
|
|
|
|
// Object describes an azure object
|
|
type Object struct {
|
|
fs *Fs // what this object is part of
|
|
remote string // The remote path
|
|
modTime time.Time // The modified time of the object if known
|
|
md5 string // MD5 hash if known
|
|
size int64 // Size of the object
|
|
mimeType string // Content-Type of the object
|
|
accessTier blob.AccessTier // Blob Access Tier
|
|
meta map[string]string // blob metadata
|
|
}
|
|
|
|
// ------------------------------------------------------------
|
|
|
|
// 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.rootContainer == "" {
|
|
return "Azure root"
|
|
}
|
|
if f.rootDirectory == "" {
|
|
return fmt.Sprintf("Azure container %s", f.rootContainer)
|
|
}
|
|
return fmt.Sprintf("Azure container %s path %s", f.rootContainer, f.rootDirectory)
|
|
}
|
|
|
|
// Features returns the optional features of this Fs
|
|
func (f *Fs) Features() *fs.Features {
|
|
return f.features
|
|
}
|
|
|
|
// parsePath parses a remote 'url'
|
|
func parsePath(path string) (root string) {
|
|
root = strings.Trim(path, "/")
|
|
return
|
|
}
|
|
|
|
// split returns container and containerPath from the rootRelativePath
|
|
// relative to f.root
|
|
func (f *Fs) split(rootRelativePath string) (containerName, containerPath string) {
|
|
containerName, containerPath = bucket.Split(path.Join(f.root, rootRelativePath))
|
|
return f.opt.Enc.FromStandardName(containerName), f.opt.Enc.FromStandardPath(containerPath)
|
|
}
|
|
|
|
// split returns container and containerPath from the object
|
|
func (o *Object) split() (container, containerPath string) {
|
|
return o.fs.split(o.remote)
|
|
}
|
|
|
|
// validateAccessTier checks if azureblob supports user supplied tier
|
|
func validateAccessTier(tier string) bool {
|
|
return strings.EqualFold(tier, string(blob.AccessTierHot)) ||
|
|
strings.EqualFold(tier, string(blob.AccessTierCool)) ||
|
|
strings.EqualFold(tier, string(blob.AccessTierArchive))
|
|
}
|
|
|
|
// validatePublicAccess checks if azureblob supports use supplied public access level
|
|
func validatePublicAccess(publicAccess string) bool {
|
|
switch publicAccess {
|
|
case "",
|
|
string(container.PublicAccessTypeBlob),
|
|
string(container.PublicAccessTypeContainer):
|
|
// valid cases
|
|
return true
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
// retryErrorCodes is a slice of error codes that we will retry
|
|
var retryErrorCodes = []int{
|
|
401, // Unauthorized (e.g. "Token has expired")
|
|
408, // Request Timeout
|
|
429, // Rate exceeded.
|
|
500, // Get occasional 500 Internal Server Error
|
|
503, // Service Unavailable
|
|
504, // Gateway Time-out
|
|
}
|
|
|
|
// shouldRetry returns a boolean as to whether this resp and err
|
|
// deserve to be retried. It returns the err as a convenience
|
|
func (f *Fs) shouldRetry(ctx context.Context, err error) (bool, error) {
|
|
if fserrors.ContextError(ctx, &err) {
|
|
return false, err
|
|
}
|
|
// FIXME interpret special errors - more to do here
|
|
if storageErr, ok := err.(*azcore.ResponseError); ok {
|
|
switch storageErr.ErrorCode {
|
|
case "InvalidBlobOrBlock":
|
|
// These errors happen sometimes in multipart uploads
|
|
// because of block concurrency issues
|
|
return true, err
|
|
}
|
|
statusCode := storageErr.StatusCode
|
|
for _, e := range retryErrorCodes {
|
|
if statusCode == e {
|
|
return true, err
|
|
}
|
|
}
|
|
}
|
|
return fserrors.ShouldRetry(err), err
|
|
}
|
|
|
|
func checkUploadChunkSize(cs fs.SizeSuffix) error {
|
|
const minChunkSize = fs.SizeSuffixBase
|
|
if cs < minChunkSize {
|
|
return fmt.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
|
|
}
|
|
|
|
type servicePrincipalCredentials struct {
|
|
AppID string `json:"appId"`
|
|
Password string `json:"password"`
|
|
Tenant string `json:"tenant"`
|
|
}
|
|
|
|
// parseServicePrincipalCredentials unmarshals a service principal credentials JSON file as generated by az cli.
|
|
func parseServicePrincipalCredentials(ctx context.Context, credentialsData []byte) (*servicePrincipalCredentials, error) {
|
|
var spCredentials servicePrincipalCredentials
|
|
if err := json.Unmarshal(credentialsData, &spCredentials); err != nil {
|
|
return nil, fmt.Errorf("error parsing credentials from JSON file: %w", err)
|
|
}
|
|
// TODO: support certificate credentials
|
|
// Validate all fields present
|
|
if spCredentials.AppID == "" || spCredentials.Password == "" || spCredentials.Tenant == "" {
|
|
return nil, fmt.Errorf("missing fields in credentials file")
|
|
}
|
|
return &spCredentials, nil
|
|
}
|
|
|
|
// setRoot changes the root of the Fs
|
|
func (f *Fs) setRoot(root string) {
|
|
f.root = parsePath(root)
|
|
f.rootContainer, f.rootDirectory = bucket.Split(f.root)
|
|
}
|
|
|
|
// Wrap the http.Transport to satisfy the Transporter interface
|
|
type transporter struct {
|
|
http.RoundTripper
|
|
}
|
|
|
|
// Make a new transporter
|
|
func newTransporter(ctx context.Context) transporter {
|
|
return transporter{
|
|
RoundTripper: fshttp.NewTransport(ctx),
|
|
}
|
|
}
|
|
|
|
// Do sends the HTTP request and returns the HTTP response or error.
|
|
func (tr transporter) Do(req *http.Request) (*http.Response, error) {
|
|
return tr.RoundTripper.RoundTrip(req)
|
|
}
|
|
|
|
// NewFs constructs an Fs from the path, container:path
|
|
func NewFs(ctx context.Context, 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, fmt.Errorf("chunk size: %w", err)
|
|
}
|
|
if opt.ListChunkSize > maxListChunkSize {
|
|
return nil, fmt.Errorf("blob list size can't be greater than %v - was %v", maxListChunkSize, opt.ListChunkSize)
|
|
}
|
|
|
|
if opt.AccessTier == "" {
|
|
opt.AccessTier = string(defaultAccessTier)
|
|
} else if !validateAccessTier(opt.AccessTier) {
|
|
return nil, fmt.Errorf("supported access tiers are %s, %s and %s",
|
|
string(blob.AccessTierHot), string(blob.AccessTierCool), string(blob.AccessTierArchive))
|
|
}
|
|
|
|
if !validatePublicAccess((opt.PublicAccess)) {
|
|
return nil, fmt.Errorf("supported public access level are %s and %s",
|
|
string(container.PublicAccessTypeBlob), string(container.PublicAccessTypeContainer))
|
|
}
|
|
|
|
ci := fs.GetConfig(ctx)
|
|
f := &Fs{
|
|
name: name,
|
|
opt: *opt,
|
|
ci: ci,
|
|
pacer: fs.NewPacer(ctx, pacer.NewS3(pacer.MinSleep(minSleep), pacer.MaxSleep(maxSleep), pacer.DecayConstant(decayConstant))),
|
|
uploadToken: pacer.NewTokenDispenser(ci.Transfers),
|
|
cache: bucket.NewCache(),
|
|
cntSVCcache: make(map[string]*container.Client, 1),
|
|
pool: pool.New(
|
|
time.Duration(opt.MemoryPoolFlushTime),
|
|
int(opt.ChunkSize),
|
|
ci.Transfers,
|
|
opt.MemoryPoolUseMmap,
|
|
),
|
|
poolSize: int64(opt.ChunkSize),
|
|
}
|
|
f.publicAccess = container.PublicAccessType(opt.PublicAccess)
|
|
f.setRoot(root)
|
|
f.features = (&fs.Features{
|
|
ReadMimeType: true,
|
|
WriteMimeType: true,
|
|
BucketBased: true,
|
|
BucketBasedRootOK: true,
|
|
SetTier: true,
|
|
GetTier: true,
|
|
}).Fill(ctx, f)
|
|
|
|
// Client options specifying our own transport
|
|
policyClientOptions := policy.ClientOptions{
|
|
Transport: newTransporter(ctx),
|
|
}
|
|
clientOpt := service.ClientOptions{
|
|
ClientOptions: policyClientOptions,
|
|
}
|
|
|
|
// Here we auth by setting one of cred, sharedKeyCred or f.svc
|
|
var (
|
|
cred azcore.TokenCredential
|
|
sharedKeyCred *service.SharedKeyCredential
|
|
)
|
|
switch {
|
|
case opt.EnvAuth:
|
|
// Read account from environment if needed
|
|
if opt.Account == "" {
|
|
opt.Account, _ = os.LookupEnv("AZURE_STORAGE_ACCOUNT_NAME")
|
|
}
|
|
// Read credentials from the environment
|
|
options := azidentity.DefaultAzureCredentialOptions{
|
|
ClientOptions: policyClientOptions,
|
|
}
|
|
cred, err = azidentity.NewDefaultAzureCredential(&options)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("create azure enviroment credential failed: %w", err)
|
|
}
|
|
case opt.UseEmulator:
|
|
if opt.Account == "" {
|
|
opt.Account = emulatorAccount
|
|
}
|
|
if opt.Key == "" {
|
|
opt.Key = emulatorAccountKey
|
|
}
|
|
if opt.Endpoint == "" {
|
|
opt.Endpoint = emulatorBlobEndpoint
|
|
}
|
|
sharedKeyCred, err = service.NewSharedKeyCredential(opt.Account, opt.Key)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("create new shared key credential for emulator failed: %w", err)
|
|
}
|
|
case opt.Account != "" && opt.Key != "":
|
|
sharedKeyCred, err = service.NewSharedKeyCredential(opt.Account, opt.Key)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("create new shared key credential failed: %w", err)
|
|
}
|
|
case opt.SASURL != "":
|
|
parts, err := sas.ParseURL(opt.SASURL)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to parse SAS URL: %w", err)
|
|
}
|
|
endpoint := opt.SASURL
|
|
containerName := parts.ContainerName
|
|
// Check if we have container level SAS or account level SAS
|
|
if containerName != "" {
|
|
// Container level SAS
|
|
if f.rootContainer != "" && containerName != f.rootContainer {
|
|
return nil, fmt.Errorf("container name in SAS URL (%q) and container provided in command (%q) do not match", containerName, f.rootContainer)
|
|
}
|
|
// Rewrite the endpoint string to be without the container
|
|
parts.ContainerName = ""
|
|
endpoint = parts.String()
|
|
}
|
|
f.svc, err = service.NewClientWithNoCredential(endpoint, &clientOpt)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("unable to create SAS URL client: %w", err)
|
|
}
|
|
// if using Container level SAS put the container client into the cache
|
|
if containerName != "" {
|
|
_ = f.cntSVC(containerName)
|
|
f.isLimited = true
|
|
}
|
|
case opt.ClientID != "" && opt.Tenant != "" && opt.ClientSecret != "":
|
|
// Service principal with client secret
|
|
options := azidentity.ClientSecretCredentialOptions{
|
|
ClientOptions: policyClientOptions,
|
|
}
|
|
cred, err = azidentity.NewClientSecretCredential(opt.Tenant, opt.ClientID, opt.ClientSecret, &options)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("error creating a client secret credential: %w", err)
|
|
}
|
|
case opt.ClientID != "" && opt.Tenant != "" && opt.ClientCertificatePath != "":
|
|
// Service principal with certificate
|
|
//
|
|
// Read the certificate
|
|
data, err := os.ReadFile(env.ShellExpand(opt.ClientCertificatePath))
|
|
if err != nil {
|
|
return nil, fmt.Errorf("error reading client certificate file: %w", err)
|
|
}
|
|
// NewClientCertificateCredential requires at least one *x509.Certificate, and a
|
|
// crypto.PrivateKey.
|
|
//
|
|
// ParseCertificates returns these given certificate data in PEM or PKCS12 format.
|
|
// It handles common scenarios but has limitations, for example it doesn't load PEM
|
|
// encrypted private keys.
|
|
var password []byte
|
|
if opt.ClientCertificatePassword != "" {
|
|
pw, err := obscure.Reveal(opt.Password)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("certificate password decode failed - did you obscure it?: %w", err)
|
|
}
|
|
password = []byte(pw)
|
|
}
|
|
certs, key, err := azidentity.ParseCertificates(data, password)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to parse client certificate file: %w", err)
|
|
}
|
|
options := azidentity.ClientCertificateCredentialOptions{
|
|
ClientOptions: policyClientOptions,
|
|
SendCertificateChain: opt.ClientSendCertificateChain,
|
|
}
|
|
cred, err = azidentity.NewClientCertificateCredential(
|
|
opt.Tenant, opt.ClientID, certs, key, &options,
|
|
)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("create azure service principal with client certificate credential failed: %w", err)
|
|
}
|
|
case opt.ClientID != "" && opt.Tenant != "" && opt.Username != "" && opt.Password != "":
|
|
// User with username and password
|
|
options := azidentity.UsernamePasswordCredentialOptions{
|
|
ClientOptions: policyClientOptions,
|
|
}
|
|
password, err := obscure.Reveal(opt.Password)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("user password decode failed - did you obscure it?: %w", err)
|
|
}
|
|
cred, err = azidentity.NewUsernamePasswordCredential(
|
|
opt.Tenant, opt.ClientID, opt.Username, password, &options,
|
|
)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("authenticate user with password failed: %w", err)
|
|
}
|
|
case opt.ServicePrincipalFile != "":
|
|
// Loading service principal credentials from file.
|
|
loadedCreds, err := os.ReadFile(env.ShellExpand(opt.ServicePrincipalFile))
|
|
if err != nil {
|
|
return nil, fmt.Errorf("error opening service principal credentials file: %w", err)
|
|
}
|
|
parsedCreds, err := parseServicePrincipalCredentials(ctx, loadedCreds)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("error parsing service principal credentials file: %w", err)
|
|
}
|
|
options := azidentity.ClientSecretCredentialOptions{
|
|
ClientOptions: policyClientOptions,
|
|
}
|
|
cred, err = azidentity.NewClientSecretCredential(parsedCreds.Tenant, parsedCreds.AppID, parsedCreds.Password, &options)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("error creating a client secret credential: %w", err)
|
|
}
|
|
case opt.UseMSI:
|
|
// Specifying a user-assigned identity. Exactly one of the above IDs must be specified.
|
|
// Validate and ensure exactly one is set. (To do: better validation.)
|
|
var b2i = map[bool]int{false: 0, true: 1}
|
|
set := b2i[opt.MSIClientID != ""] + b2i[opt.MSIObjectID != ""] + b2i[opt.MSIResourceID != ""]
|
|
if set > 1 {
|
|
return nil, errors.New("more than one user-assigned identity ID is set")
|
|
}
|
|
var options azidentity.ManagedIdentityCredentialOptions
|
|
switch {
|
|
case opt.MSIClientID != "":
|
|
options.ID = azidentity.ClientID(opt.MSIClientID)
|
|
case opt.MSIObjectID != "":
|
|
// FIXME this doesn't appear to be in the new SDK?
|
|
return nil, fmt.Errorf("MSI object ID is currently unsupported")
|
|
case opt.MSIResourceID != "":
|
|
options.ID = azidentity.ResourceID(opt.MSIResourceID)
|
|
}
|
|
cred, err = azidentity.NewManagedIdentityCredential(&options)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to acquire MSI token: %w", err)
|
|
}
|
|
default:
|
|
return nil, errors.New("no authentication method configured")
|
|
}
|
|
|
|
// Make the client if not already created
|
|
if f.svc == nil {
|
|
// Work out what the endpoint is if it is still unset
|
|
if opt.Endpoint == "" {
|
|
if opt.Account == "" {
|
|
return nil, fmt.Errorf("account must be set: can't make service URL")
|
|
}
|
|
u, err := url.Parse(fmt.Sprintf("https://%s.%s", opt.Account, storageDefaultBaseURL))
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to make azure storage URL from account: %w", err)
|
|
}
|
|
opt.Endpoint = u.String()
|
|
}
|
|
if sharedKeyCred != nil {
|
|
// Shared key cred
|
|
f.svc, err = service.NewClientWithSharedKeyCredential(opt.Endpoint, sharedKeyCred, &clientOpt)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("create client with shared key failed: %w", err)
|
|
}
|
|
} else if cred != nil {
|
|
// Azidentity cred
|
|
f.svc, err = service.NewClient(opt.Endpoint, cred, &clientOpt)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("create client failed: %w", err)
|
|
}
|
|
}
|
|
}
|
|
if f.svc == nil {
|
|
return nil, fmt.Errorf("internal error: auth failed to make credentials or client")
|
|
}
|
|
|
|
if f.rootContainer != "" && f.rootDirectory != "" {
|
|
// Check to see if the (container,directory) is actually an existing file
|
|
oldRoot := f.root
|
|
newRoot, leaf := path.Split(oldRoot)
|
|
f.setRoot(newRoot)
|
|
_, err := f.NewObject(ctx, leaf)
|
|
if err != nil {
|
|
if err == fs.ErrorObjectNotFound || err == fs.ErrorNotAFile {
|
|
// File doesn't exist or is a directory so return old f
|
|
f.setRoot(oldRoot)
|
|
return f, nil
|
|
}
|
|
return nil, err
|
|
}
|
|
// return an error with an fs which points to the parent
|
|
return f, fs.ErrorIsFile
|
|
}
|
|
return f, nil
|
|
}
|
|
|
|
// return the container client for the container passed in
|
|
func (f *Fs) cntSVC(containerName string) (containerClient *container.Client) {
|
|
f.cntSVCcacheMu.Lock()
|
|
defer f.cntSVCcacheMu.Unlock()
|
|
var ok bool
|
|
if containerClient, ok = f.cntSVCcache[containerName]; !ok {
|
|
containerClient = f.svc.NewContainerClient(containerName)
|
|
f.cntSVCcache[containerName] = containerClient
|
|
}
|
|
return containerClient
|
|
}
|
|
|
|
// Return an Object from a path
|
|
//
|
|
// If it can't be found it returns the error fs.ErrorObjectNotFound.
|
|
func (f *Fs) newObjectWithInfo(remote string, info *container.BlobItem) (fs.Object, error) {
|
|
o := &Object{
|
|
fs: f,
|
|
remote: remote,
|
|
}
|
|
if info != nil {
|
|
err := o.decodeMetaDataFromBlob(info)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
} else if !o.fs.opt.NoHeadObject {
|
|
err := o.readMetaData() // reads info and headers, 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(ctx context.Context, remote string) (fs.Object, error) {
|
|
return f.newObjectWithInfo(remote, nil)
|
|
}
|
|
|
|
// getBlobSVC creates a blob client
|
|
func (f *Fs) getBlobSVC(container, containerPath string) *blob.Client {
|
|
// FIXME the urlEncode here is a workaround for
|
|
// https://github.com/Azure/azure-sdk-for-go/issues/19613
|
|
// https://github.com/Azure/azure-sdk-for-go/issues/19475
|
|
return f.cntSVC(container).NewBlobClient(urlEncode(containerPath))
|
|
}
|
|
|
|
// getBlockBlobSVC creates a block blob client
|
|
func (f *Fs) getBlockBlobSVC(container, containerPath string) *blockblob.Client {
|
|
// FIXME the urlEncode here is a workaround for
|
|
// https://github.com/Azure/azure-sdk-for-go/issues/19613
|
|
// https://github.com/Azure/azure-sdk-for-go/issues/19475
|
|
return f.cntSVC(container).NewBlockBlobClient(urlEncode(containerPath))
|
|
}
|
|
|
|
// updateMetadataWithModTime adds the modTime passed in to o.meta.
|
|
func (o *Object) updateMetadataWithModTime(modTime time.Time) {
|
|
// Make sure o.meta is not nil
|
|
if o.meta == nil {
|
|
o.meta = make(map[string]string, 1)
|
|
}
|
|
|
|
// Set modTimeKey in it
|
|
o.meta[modTimeKey] = modTime.Format(timeFormatOut)
|
|
}
|
|
|
|
// Returns whether file is a directory marker or not
|
|
func isDirectoryMarker(size int64, metadata map[string]string, remote string) bool {
|
|
// Directory markers are 0 length
|
|
if size == 0 {
|
|
endsWithSlash := strings.HasSuffix(remote, "/")
|
|
if endsWithSlash || remote == "" {
|
|
return true
|
|
}
|
|
// Note that metadata with hdi_isfolder = true seems to be a
|
|
// defacto standard for marking blobs as directories.
|
|
// Note also that the metadata hasn't been normalised to lower case yet
|
|
for k, v := range metadata {
|
|
if strings.EqualFold(k, "hdi_isfolder") && v == "true" {
|
|
return true
|
|
}
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
// Returns whether file is a directory marker or not using metadata
|
|
// with pointers to strings as the SDK seems to use both forms rather
|
|
// annoyingly.
|
|
//
|
|
// NB This is a duplicate of isDirectoryMarker
|
|
func isDirectoryMarkerP(size int64, metadata map[string]*string, remote string) bool {
|
|
// Directory markers are 0 length
|
|
if size == 0 {
|
|
endsWithSlash := strings.HasSuffix(remote, "/")
|
|
if endsWithSlash || remote == "" {
|
|
return true
|
|
}
|
|
// Note that metadata with hdi_isfolder = true seems to be a
|
|
// defacto standard for marking blobs as directories.
|
|
// Note also that the metadata hasn't been normalised to lower case yet
|
|
for k, pv := range metadata {
|
|
if strings.EqualFold(k, "hdi_isfolder") && pv != nil && *pv == "true" {
|
|
return true
|
|
}
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
// listFn is called from list to handle an object
|
|
type listFn func(remote string, object *container.BlobItem, isDirectory bool) error
|
|
|
|
// list lists the objects into the function supplied from
|
|
// the container and root supplied
|
|
//
|
|
// dir is the starting directory, "" for root
|
|
//
|
|
// The remote has prefix removed from it and if addContainer is set then
|
|
// it adds the container to the start.
|
|
func (f *Fs) list(ctx context.Context, containerName, directory, prefix string, addContainer bool, recurse bool, maxResults int32, fn listFn) error {
|
|
if f.cache.IsDeleted(containerName) {
|
|
return fs.ErrorDirNotFound
|
|
}
|
|
if prefix != "" {
|
|
prefix += "/"
|
|
}
|
|
if directory != "" {
|
|
directory += "/"
|
|
}
|
|
delimiter := ""
|
|
if !recurse {
|
|
delimiter = "/"
|
|
}
|
|
|
|
pager := f.cntSVC(containerName).NewListBlobsHierarchyPager(delimiter, &container.ListBlobsHierarchyOptions{
|
|
// Copy, Metadata, Snapshots, UncommittedBlobs, Deleted, Tags, Versions, LegalHold, ImmutabilityPolicy, DeletedWithVersions bool
|
|
Include: container.ListBlobsInclude{
|
|
Copy: false,
|
|
Metadata: true,
|
|
Snapshots: false,
|
|
UncommittedBlobs: false,
|
|
Deleted: false,
|
|
},
|
|
Prefix: &directory,
|
|
MaxResults: &maxResults,
|
|
})
|
|
for pager.More() {
|
|
var response container.ListBlobsHierarchyResponse
|
|
err := f.pacer.Call(func() (bool, error) {
|
|
var err error
|
|
response, err = pager.NextPage(ctx)
|
|
//response, err = f.srv.ListBlobsHierarchySegment(ctx, marker, delimiter, options)
|
|
return f.shouldRetry(ctx, err)
|
|
})
|
|
|
|
if err != nil {
|
|
// Check http error code along with service code, current SDK doesn't populate service code correctly sometimes
|
|
if storageErr, ok := err.(*azcore.ResponseError); ok && (storageErr.ErrorCode == string(bloberror.ContainerNotFound) || storageErr.StatusCode == http.StatusNotFound) {
|
|
return fs.ErrorDirNotFound
|
|
}
|
|
return err
|
|
}
|
|
// Advance marker to next
|
|
// marker = response.NextMarker
|
|
for i := range response.Segment.BlobItems {
|
|
file := response.Segment.BlobItems[i]
|
|
// Finish if file name no longer has prefix
|
|
// if prefix != "" && !strings.HasPrefix(file.Name, prefix) {
|
|
// return nil
|
|
// }
|
|
if file.Name == nil {
|
|
fs.Debugf(f, "Nil name received")
|
|
continue
|
|
}
|
|
remote := f.opt.Enc.ToStandardPath(*file.Name)
|
|
if !strings.HasPrefix(remote, prefix) {
|
|
fs.Debugf(f, "Odd name received %q", remote)
|
|
continue
|
|
}
|
|
remote = remote[len(prefix):]
|
|
if isDirectoryMarkerP(*file.Properties.ContentLength, file.Metadata, remote) {
|
|
continue // skip directory marker
|
|
}
|
|
if addContainer {
|
|
remote = path.Join(containerName, remote)
|
|
}
|
|
// Send object
|
|
err = fn(remote, file, false)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
// Send the subdirectories
|
|
for _, remote := range response.Segment.BlobPrefixes {
|
|
if remote.Name == nil {
|
|
fs.Debugf(f, "Nil prefix received")
|
|
continue
|
|
}
|
|
remote := strings.TrimRight(*remote.Name, "/")
|
|
remote = f.opt.Enc.ToStandardPath(remote)
|
|
if !strings.HasPrefix(remote, prefix) {
|
|
fs.Debugf(f, "Odd directory name received %q", remote)
|
|
continue
|
|
}
|
|
remote = remote[len(prefix):]
|
|
if addContainer {
|
|
remote = path.Join(containerName, remote)
|
|
}
|
|
// Send object
|
|
err = fn(remote, nil, true)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Convert a list item into a DirEntry
|
|
func (f *Fs) itemToDirEntry(remote string, object *container.BlobItem, isDirectory bool) (fs.DirEntry, error) {
|
|
if isDirectory {
|
|
d := fs.NewDir(remote, time.Time{})
|
|
return d, nil
|
|
}
|
|
o, err := f.newObjectWithInfo(remote, object)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return o, nil
|
|
}
|
|
|
|
// Check to see if this is a limited container and the container is not found
|
|
func (f *Fs) containerOK(container string) bool {
|
|
if !f.isLimited {
|
|
return true
|
|
}
|
|
f.cntSVCcacheMu.Lock()
|
|
defer f.cntSVCcacheMu.Unlock()
|
|
for limitedContainer := range f.cntSVCcache {
|
|
if container == limitedContainer {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
// listDir lists a single directory
|
|
func (f *Fs) listDir(ctx context.Context, containerName, directory, prefix string, addContainer bool) (entries fs.DirEntries, err error) {
|
|
if !f.containerOK(containerName) {
|
|
return nil, fs.ErrorDirNotFound
|
|
}
|
|
err = f.list(ctx, containerName, directory, prefix, addContainer, false, int32(f.opt.ListChunkSize), func(remote string, object *container.BlobItem, 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
|
|
}
|
|
// container must be present if listing succeeded
|
|
f.cache.MarkOK(containerName)
|
|
return entries, nil
|
|
}
|
|
|
|
// listContainers returns all the containers to out
|
|
func (f *Fs) listContainers(ctx context.Context) (entries fs.DirEntries, err error) {
|
|
if f.isLimited {
|
|
f.cntSVCcacheMu.Lock()
|
|
for container := range f.cntSVCcache {
|
|
d := fs.NewDir(container, time.Time{})
|
|
entries = append(entries, d)
|
|
}
|
|
f.cntSVCcacheMu.Unlock()
|
|
return entries, nil
|
|
}
|
|
err = f.listContainersToFn(func(Name string, LastModified time.Time) error {
|
|
d := fs.NewDir(f.opt.Enc.ToStandardName(Name), LastModified)
|
|
f.cache.MarkOK(Name)
|
|
entries = append(entries, d)
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
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(ctx context.Context, dir string) (entries fs.DirEntries, err error) {
|
|
container, directory := f.split(dir)
|
|
if container == "" {
|
|
if directory != "" {
|
|
return nil, fs.ErrorListBucketRequired
|
|
}
|
|
return f.listContainers(ctx)
|
|
}
|
|
return f.listDir(ctx, container, directory, f.rootDirectory, f.rootContainer == "")
|
|
}
|
|
|
|
// 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(ctx context.Context, dir string, callback fs.ListRCallback) (err error) {
|
|
containerName, directory := f.split(dir)
|
|
list := walk.NewListRHelper(callback)
|
|
listR := func(containerName, directory, prefix string, addContainer bool) error {
|
|
return f.list(ctx, containerName, directory, prefix, addContainer, true, int32(f.opt.ListChunkSize), func(remote string, object *container.BlobItem, isDirectory bool) error {
|
|
entry, err := f.itemToDirEntry(remote, object, isDirectory)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return list.Add(entry)
|
|
})
|
|
}
|
|
if containerName == "" {
|
|
entries, err := f.listContainers(ctx)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for _, entry := range entries {
|
|
err = list.Add(entry)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
container := entry.Remote()
|
|
err = listR(container, "", f.rootDirectory, true)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
// container must be present if listing succeeded
|
|
f.cache.MarkOK(container)
|
|
}
|
|
} else {
|
|
if !f.containerOK(containerName) {
|
|
return fs.ErrorDirNotFound
|
|
}
|
|
err = listR(containerName, directory, f.rootDirectory, f.rootContainer == "")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
// container must be present if listing succeeded
|
|
f.cache.MarkOK(containerName)
|
|
}
|
|
return list.Flush()
|
|
}
|
|
|
|
// listContainerFn is called from listContainersToFn to handle a container
|
|
type listContainerFn func(Name string, LastModified time.Time) error
|
|
|
|
// listContainersToFn lists the containers to the function supplied
|
|
func (f *Fs) listContainersToFn(fn listContainerFn) error {
|
|
max := int32(f.opt.ListChunkSize)
|
|
pager := f.svc.NewListContainersPager(&service.ListContainersOptions{
|
|
Include: service.ListContainersInclude{Metadata: true, Deleted: true},
|
|
MaxResults: &max,
|
|
})
|
|
ctx := context.Background()
|
|
for pager.More() {
|
|
var response service.ListContainersResponse
|
|
err := f.pacer.Call(func() (bool, error) {
|
|
var err error
|
|
response, err = pager.NextPage(ctx)
|
|
return f.shouldRetry(ctx, err)
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
for _, cnt := range response.ContainerItems {
|
|
if cnt == nil || cnt.Name == nil || cnt.Properties == nil || cnt.Properties.LastModified == nil {
|
|
fs.Debugf(f, "nil returned in container info")
|
|
}
|
|
err = fn(*cnt.Name, *cnt.Properties.LastModified)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// Put the object into the container
|
|
//
|
|
// Copy the reader in to the new object which is returned.
|
|
//
|
|
// The new object may have been created if an error is returned
|
|
func (f *Fs) Put(ctx context.Context, 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(ctx, in, src, options...)
|
|
}
|
|
|
|
// PutStream uploads to the remote path with the modTime given of indeterminate size
|
|
func (f *Fs) PutStream(ctx context.Context, in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error) {
|
|
return f.Put(ctx, in, src, options...)
|
|
}
|
|
|
|
// Mkdir creates the container if it doesn't exist
|
|
func (f *Fs) Mkdir(ctx context.Context, dir string) error {
|
|
container, _ := f.split(dir)
|
|
return f.makeContainer(ctx, container)
|
|
}
|
|
|
|
// makeContainer creates the container if it doesn't exist
|
|
func (f *Fs) makeContainer(ctx context.Context, container string) error {
|
|
if f.opt.NoCheckContainer {
|
|
return nil
|
|
}
|
|
return f.cache.Create(container, func() error {
|
|
// If this is a SAS URL limited to a container then assume it is already created
|
|
if f.isLimited {
|
|
return nil
|
|
}
|
|
opt := service.CreateContainerOptions{
|
|
// Optional. Specifies a user-defined name-value pair associated with the blob.
|
|
//Metadata map[string]string
|
|
|
|
// Optional. Specifies the encryption scope settings to set on the container.
|
|
//CpkScopeInfo *CpkScopeInfo
|
|
}
|
|
if f.publicAccess != "" {
|
|
// Specifies whether data in the container may be accessed publicly and the level of access
|
|
opt.Access = &f.publicAccess
|
|
}
|
|
// now try to create the container
|
|
return f.pacer.Call(func() (bool, error) {
|
|
_, err := f.svc.CreateContainer(ctx, container, &opt)
|
|
if err != nil {
|
|
if storageErr, ok := err.(*azcore.ResponseError); ok {
|
|
switch bloberror.Code(storageErr.ErrorCode) {
|
|
case bloberror.ContainerAlreadyExists:
|
|
return false, nil
|
|
case bloberror.ContainerBeingDeleted:
|
|
// From https://docs.microsoft.com/en-us/rest/api/storageservices/delete-container
|
|
// When a container is deleted, a container with the same name cannot be created
|
|
// for at least 30 seconds; the container may not be available for more than 30
|
|
// seconds if the service is still processing the request.
|
|
time.Sleep(6 * time.Second) // default 10 retries will be 60 seconds
|
|
f.cache.MarkDeleted(container)
|
|
return true, err
|
|
case bloberror.AuthorizationFailure:
|
|
// Assume that the user does not have permission to
|
|
// create the container and carry on anyway.
|
|
fs.Debugf(f, "Tried to create container but got %s error - carrying on assuming container exists. Use no_check_container to stop this check..", storageErr.ErrorCode)
|
|
return false, nil
|
|
}
|
|
}
|
|
}
|
|
return f.shouldRetry(ctx, err)
|
|
})
|
|
}, nil)
|
|
}
|
|
|
|
// isEmpty checks to see if a given (container, directory) is empty and returns an error if not
|
|
func (f *Fs) isEmpty(ctx context.Context, containerName, directory string) (err error) {
|
|
empty := true
|
|
err = f.list(ctx, containerName, directory, f.rootDirectory, f.rootContainer == "", true, 1, func(remote string, object *container.BlobItem, isDirectory bool) error {
|
|
empty = false
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if !empty {
|
|
return fs.ErrorDirectoryNotEmpty
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// deleteContainer deletes the container. It can delete a full
|
|
// container so use isEmpty if you don't want that.
|
|
func (f *Fs) deleteContainer(ctx context.Context, containerName string) error {
|
|
return f.cache.Remove(containerName, func() error {
|
|
getOptions := container.GetPropertiesOptions{}
|
|
delOptions := container.DeleteOptions{}
|
|
return f.pacer.Call(func() (bool, error) {
|
|
_, err := f.cntSVC(containerName).GetProperties(ctx, &getOptions)
|
|
if err == nil {
|
|
_, err = f.cntSVC(containerName).Delete(ctx, &delOptions)
|
|
}
|
|
|
|
if err != nil {
|
|
// Check http error code along with service code, current SDK doesn't populate service code correctly sometimes
|
|
if storageErr, ok := err.(*azcore.ResponseError); ok && (storageErr.ErrorCode == string(bloberror.ContainerNotFound) || storageErr.StatusCode == http.StatusNotFound) {
|
|
return false, fs.ErrorDirNotFound
|
|
}
|
|
|
|
return f.shouldRetry(ctx, err)
|
|
}
|
|
|
|
return f.shouldRetry(ctx, err)
|
|
})
|
|
})
|
|
}
|
|
|
|
// Rmdir deletes the container if the fs is at the root
|
|
//
|
|
// Returns an error if it isn't empty
|
|
func (f *Fs) Rmdir(ctx context.Context, dir string) error {
|
|
container, directory := f.split(dir)
|
|
if container == "" || directory != "" {
|
|
return nil
|
|
}
|
|
err := f.isEmpty(ctx, container, directory)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return f.deleteContainer(ctx, container)
|
|
}
|
|
|
|
// Precision of the remote
|
|
func (f *Fs) Precision() time.Duration {
|
|
return time.Nanosecond
|
|
}
|
|
|
|
// Hashes returns the supported hash sets.
|
|
func (f *Fs) Hashes() hash.Set {
|
|
return hash.Set(hash.MD5)
|
|
}
|
|
|
|
// Purge deletes all the files and directories including the old versions.
|
|
func (f *Fs) Purge(ctx context.Context, dir string) error {
|
|
container, directory := f.split(dir)
|
|
if container == "" || directory != "" {
|
|
// Delegate to caller if not root of a container
|
|
return fs.ErrorCantPurge
|
|
}
|
|
return f.deleteContainer(ctx, container)
|
|
}
|
|
|
|
// 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(ctx context.Context, src fs.Object, remote string) (fs.Object, error) {
|
|
dstContainer, dstPath := f.split(remote)
|
|
err := f.makeContainer(ctx, dstContainer)
|
|
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
|
|
}
|
|
dstBlobSVC := f.getBlobSVC(dstContainer, dstPath)
|
|
srcBlobSVC := srcObj.getBlobSVC()
|
|
srcURL := srcBlobSVC.URL()
|
|
|
|
tier := blob.AccessTier(f.opt.AccessTier)
|
|
options := blob.StartCopyFromURLOptions{
|
|
Tier: &tier,
|
|
}
|
|
var startCopy blob.StartCopyFromURLResponse
|
|
err = f.pacer.Call(func() (bool, error) {
|
|
startCopy, err = dstBlobSVC.StartCopyFromURL(ctx, srcURL, &options)
|
|
return f.shouldRetry(ctx, err)
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
copyStatus := startCopy.CopyStatus
|
|
getOptions := blob.GetPropertiesOptions{}
|
|
for copyStatus != nil && string(*copyStatus) == string(container.CopyStatusTypePending) {
|
|
time.Sleep(1 * time.Second)
|
|
getMetadata, err := dstBlobSVC.GetProperties(ctx, &getOptions)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
copyStatus = getMetadata.CopyStatus
|
|
}
|
|
|
|
return f.NewObject(ctx, remote)
|
|
}
|
|
|
|
func (f *Fs) getMemoryPool(size int64) *pool.Pool {
|
|
if size == int64(f.opt.ChunkSize) {
|
|
return f.pool
|
|
}
|
|
|
|
return pool.New(
|
|
time.Duration(f.opt.MemoryPoolFlushTime),
|
|
int(size),
|
|
f.ci.Transfers,
|
|
f.opt.MemoryPoolUseMmap,
|
|
)
|
|
}
|
|
|
|
// ------------------------------------------------------------
|
|
|
|
// 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
|
|
}
|
|
|
|
// Hash returns the MD5 of an object returning a lowercase hex string
|
|
func (o *Object) Hash(ctx context.Context, t hash.Type) (string, error) {
|
|
if t != hash.MD5 {
|
|
return "", hash.ErrUnsupported
|
|
}
|
|
// Convert base64 encoded md5 into lower case hex
|
|
if o.md5 == "" {
|
|
return "", nil
|
|
}
|
|
data, err := base64.StdEncoding.DecodeString(o.md5)
|
|
if err != nil {
|
|
return "", fmt.Errorf("failed to decode Content-MD5: %q: %w", o.md5, err)
|
|
}
|
|
return hex.EncodeToString(data), nil
|
|
}
|
|
|
|
// Size returns the size of an object in bytes
|
|
func (o *Object) Size() int64 {
|
|
return o.size
|
|
}
|
|
|
|
func (o *Object) setMetadata(metadata map[string]string) {
|
|
if len(metadata) > 0 {
|
|
// Lower case the metadata
|
|
o.meta = make(map[string]string, len(metadata))
|
|
for k, v := range metadata {
|
|
o.meta[strings.ToLower(k)] = v
|
|
}
|
|
// Set o.modTime from metadata if it exists and
|
|
// UseServerModTime isn't in use.
|
|
if modTime, ok := o.meta[modTimeKey]; !o.fs.ci.UseServerModTime && ok {
|
|
when, err := time.Parse(timeFormatIn, modTime)
|
|
if err != nil {
|
|
fs.Debugf(o, "Couldn't parse %v = %q: %v", modTimeKey, modTime, err)
|
|
}
|
|
o.modTime = when
|
|
}
|
|
} else {
|
|
o.meta = nil
|
|
}
|
|
}
|
|
|
|
// Duplicte of setMetadata but taking pointers to strings
|
|
func (o *Object) setMetadataP(metadata map[string]*string) {
|
|
if len(metadata) > 0 {
|
|
// Convert the format of the metadata
|
|
newMeta := make(map[string]string, len(metadata))
|
|
for k, v := range metadata {
|
|
if v != nil {
|
|
newMeta[k] = *v
|
|
}
|
|
}
|
|
o.setMetadata(newMeta)
|
|
} else {
|
|
o.meta = nil
|
|
}
|
|
}
|
|
|
|
// decodeMetaDataFromPropertiesResponse sets the metadata from the data passed in
|
|
//
|
|
// Sets
|
|
//
|
|
// o.id
|
|
// o.modTime
|
|
// o.size
|
|
// o.md5
|
|
// o.meta
|
|
func (o *Object) decodeMetaDataFromPropertiesResponse(info *blob.GetPropertiesResponse) (err error) {
|
|
metadata := info.Metadata
|
|
var size int64
|
|
if info.ContentLength == nil {
|
|
size = -1
|
|
} else {
|
|
size = *info.ContentLength
|
|
}
|
|
if isDirectoryMarker(size, metadata, o.remote) {
|
|
return fs.ErrorNotAFile
|
|
}
|
|
// NOTE - Client library always returns MD5 as base64 decoded string, Object needs to maintain
|
|
// this as base64 encoded string.
|
|
o.md5 = base64.StdEncoding.EncodeToString(info.ContentMD5)
|
|
if info.ContentType == nil {
|
|
o.mimeType = ""
|
|
} else {
|
|
o.mimeType = *info.ContentType
|
|
}
|
|
o.size = size
|
|
if info.LastModified == nil {
|
|
o.modTime = time.Now()
|
|
} else {
|
|
o.modTime = *info.LastModified
|
|
}
|
|
if info.AccessTier == nil {
|
|
o.accessTier = blob.AccessTier("")
|
|
} else {
|
|
o.accessTier = blob.AccessTier(*info.AccessTier)
|
|
}
|
|
o.setMetadata(metadata)
|
|
|
|
return nil
|
|
}
|
|
|
|
func (o *Object) decodeMetaDataFromDownloadResponse(info *blob.DownloadStreamResponse) (err error) {
|
|
metadata := info.Metadata
|
|
var size int64
|
|
if info.ContentLength == nil {
|
|
size = -1
|
|
} else {
|
|
size = *info.ContentLength
|
|
}
|
|
if isDirectoryMarker(size, metadata, o.remote) {
|
|
return fs.ErrorNotAFile
|
|
}
|
|
// NOTE - Client library always returns MD5 as base64 decoded string, Object needs to maintain
|
|
// this as base64 encoded string.
|
|
o.md5 = base64.StdEncoding.EncodeToString(info.ContentMD5)
|
|
if info.ContentType == nil {
|
|
o.mimeType = ""
|
|
} else {
|
|
o.mimeType = *info.ContentType
|
|
}
|
|
o.size = size
|
|
if info.LastModified == nil {
|
|
o.modTime = time.Now()
|
|
} else {
|
|
o.modTime = *info.LastModified
|
|
}
|
|
// FIXME response doesn't appear to have AccessTier in?
|
|
// if info.AccessTier == nil {
|
|
// o.accessTier = blob.AccessTier("")
|
|
// } else {
|
|
// o.accessTier = blob.AccessTier(*info.AccessTier)
|
|
// }
|
|
o.setMetadata(metadata)
|
|
|
|
// If it was a Range request, the size is wrong, so correct it
|
|
if info.ContentRange != nil {
|
|
contentRange := *info.ContentRange
|
|
slash := strings.IndexRune(contentRange, '/')
|
|
if slash >= 0 {
|
|
i, err := strconv.ParseInt(contentRange[slash+1:], 10, 64)
|
|
if err == nil {
|
|
o.size = i
|
|
} else {
|
|
fs.Debugf(o, "Failed to find parse integer from in %q: %v", contentRange, err)
|
|
}
|
|
} else {
|
|
fs.Debugf(o, "Failed to find length in %q", contentRange)
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (o *Object) decodeMetaDataFromBlob(info *container.BlobItem) (err error) {
|
|
if info.Properties == nil {
|
|
return errors.New("nil Properties in decodeMetaDataFromBlob")
|
|
}
|
|
metadata := info.Metadata
|
|
var size int64
|
|
if info.Properties.ContentLength == nil {
|
|
size = -1
|
|
} else {
|
|
size = *info.Properties.ContentLength
|
|
}
|
|
if isDirectoryMarkerP(size, metadata, o.remote) {
|
|
return fs.ErrorNotAFile
|
|
}
|
|
// NOTE - Client library always returns MD5 as base64 decoded string, Object needs to maintain
|
|
// this as base64 encoded string.
|
|
o.md5 = base64.StdEncoding.EncodeToString(info.Properties.ContentMD5)
|
|
if info.Properties.ContentType == nil {
|
|
o.mimeType = ""
|
|
} else {
|
|
o.mimeType = *info.Properties.ContentType
|
|
}
|
|
o.size = size
|
|
if info.Properties.LastModified == nil {
|
|
o.modTime = time.Now()
|
|
} else {
|
|
o.modTime = *info.Properties.LastModified
|
|
}
|
|
if info.Properties.AccessTier == nil {
|
|
o.accessTier = blob.AccessTier("")
|
|
} else {
|
|
o.accessTier = *info.Properties.AccessTier
|
|
}
|
|
o.setMetadataP(metadata)
|
|
|
|
return nil
|
|
}
|
|
|
|
// getBlobSVC creates a blob client
|
|
func (o *Object) getBlobSVC() *blob.Client {
|
|
container, directory := o.split()
|
|
return o.fs.getBlobSVC(container, directory)
|
|
}
|
|
|
|
// getBlockBlobSVC creates a block blob client
|
|
func (o *Object) getBlockBlobSVC() *blockblob.Client {
|
|
container, directory := o.split()
|
|
return o.fs.getBlockBlobSVC(container, directory)
|
|
}
|
|
|
|
// clearMetaData clears enough metadata so readMetaData will re-read it
|
|
func (o *Object) clearMetaData() {
|
|
o.modTime = time.Time{}
|
|
}
|
|
|
|
// readMetaData gets the metadata if it hasn't already been fetched
|
|
//
|
|
// Sets
|
|
//
|
|
// o.id
|
|
// o.modTime
|
|
// o.size
|
|
// o.md5
|
|
func (o *Object) readMetaData() (err error) {
|
|
container, _ := o.split()
|
|
if !o.fs.containerOK(container) {
|
|
return fs.ErrorObjectNotFound
|
|
}
|
|
if !o.modTime.IsZero() {
|
|
return nil
|
|
}
|
|
blb := o.getBlobSVC()
|
|
// fs.Debugf(o, "Blob URL = %q", blb.URL())
|
|
|
|
// Read metadata (this includes metadata)
|
|
options := blob.GetPropertiesOptions{}
|
|
ctx := context.Background()
|
|
var blobProperties blob.GetPropertiesResponse
|
|
err = o.fs.pacer.Call(func() (bool, error) {
|
|
blobProperties, err = blb.GetProperties(ctx, &options)
|
|
return o.fs.shouldRetry(ctx, err)
|
|
})
|
|
if err != nil {
|
|
// On directories - GetProperties does not work and current SDK does not populate service code correctly hence check regular http response as well
|
|
if storageErr, ok := err.(*azcore.ResponseError); ok && (storageErr.ErrorCode == string(bloberror.BlobNotFound) || storageErr.StatusCode == http.StatusNotFound) {
|
|
return fs.ErrorObjectNotFound
|
|
}
|
|
return err
|
|
}
|
|
|
|
return o.decodeMetaDataFromPropertiesResponse(&blobProperties)
|
|
}
|
|
|
|
// 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(ctx context.Context) (result time.Time) {
|
|
// The error is logged in readMetaData
|
|
_ = o.readMetaData()
|
|
return o.modTime
|
|
}
|
|
|
|
// SetModTime sets the modification time of the local fs object
|
|
func (o *Object) SetModTime(ctx context.Context, modTime time.Time) error {
|
|
// Make sure o.meta is not nil
|
|
if o.meta == nil {
|
|
o.meta = make(map[string]string, 1)
|
|
}
|
|
// Set modTimeKey in it
|
|
o.meta[modTimeKey] = modTime.Format(timeFormatOut)
|
|
|
|
blb := o.getBlobSVC()
|
|
opt := blob.SetMetadataOptions{}
|
|
err := o.fs.pacer.Call(func() (bool, error) {
|
|
_, err := blb.SetMetadata(ctx, o.meta, &opt)
|
|
return o.fs.shouldRetry(ctx, err)
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
o.modTime = modTime
|
|
return nil
|
|
}
|
|
|
|
// Storable returns if this object is storable
|
|
func (o *Object) Storable() bool {
|
|
return true
|
|
}
|
|
|
|
// Open an object for read
|
|
func (o *Object) Open(ctx context.Context, options ...fs.OpenOption) (in io.ReadCloser, err error) {
|
|
// Offset and Count for range download
|
|
var offset int64
|
|
var count int64
|
|
if o.AccessTier() == blob.AccessTierArchive {
|
|
return nil, fmt.Errorf("blob in archive tier, you need to set tier to hot or cool first")
|
|
}
|
|
fs.FixRangeOption(options, o.size)
|
|
for _, option := range options {
|
|
switch x := option.(type) {
|
|
case *fs.RangeOption:
|
|
offset, count = x.Decode(o.size)
|
|
if count < 0 {
|
|
count = o.size - offset
|
|
}
|
|
case *fs.SeekOption:
|
|
offset = x.Offset
|
|
default:
|
|
if option.Mandatory() {
|
|
fs.Logf(o, "Unsupported mandatory option: %v", option)
|
|
}
|
|
}
|
|
}
|
|
blb := o.getBlobSVC()
|
|
opt := blob.DownloadStreamOptions{
|
|
// When set to true and specified together with the Range, the service returns the MD5 hash for the range, as long as the
|
|
// range is less than or equal to 4 MB in size.
|
|
//RangeGetContentMD5 *bool
|
|
|
|
// Range specifies a range of bytes. The default value is all bytes.
|
|
//Range HTTPRange
|
|
Range: blob.HTTPRange{
|
|
Offset: offset,
|
|
Count: count,
|
|
},
|
|
|
|
// AccessConditions *AccessConditions
|
|
// CpkInfo *CpkInfo
|
|
// CpkScopeInfo *CpkScopeInfo
|
|
}
|
|
var downloadResponse blob.DownloadStreamResponse
|
|
err = o.fs.pacer.Call(func() (bool, error) {
|
|
downloadResponse, err = blb.DownloadStream(ctx, &opt)
|
|
return o.fs.shouldRetry(ctx, err)
|
|
})
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to open for download: %w", err)
|
|
}
|
|
err = o.decodeMetaDataFromDownloadResponse(&downloadResponse)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to decode metadata for download: %w", err)
|
|
}
|
|
return downloadResponse.Body, nil
|
|
}
|
|
|
|
// dontEncode is the characters that do not need percent-encoding
|
|
//
|
|
// The characters that do not need percent-encoding are a subset of
|
|
// the printable ASCII characters: upper-case letters, lower-case
|
|
// letters, digits, ".", "_", "-", "/", "~", "!", "$", "'", "(", ")",
|
|
// "*", ";", "=", ":", and "@". All other byte values in a UTF-8 must
|
|
// be replaced with "%" and the two-digit hex value of the byte.
|
|
const dontEncode = (`abcdefghijklmnopqrstuvwxyz` +
|
|
`ABCDEFGHIJKLMNOPQRSTUVWXYZ` +
|
|
`0123456789` +
|
|
`._-/~!$'()*;=:@`)
|
|
|
|
// noNeedToEncode is a bitmap of characters which don't need % encoding
|
|
var noNeedToEncode [256]bool
|
|
|
|
func init() {
|
|
for _, c := range dontEncode {
|
|
noNeedToEncode[c] = true
|
|
}
|
|
}
|
|
|
|
// urlEncode encodes in with % encoding
|
|
func urlEncode(in string) string {
|
|
var out bytes.Buffer
|
|
for i := 0; i < len(in); i++ {
|
|
c := in[i]
|
|
if noNeedToEncode[c] {
|
|
_ = out.WriteByte(c)
|
|
} else {
|
|
_, _ = out.WriteString(fmt.Sprintf("%%%02X", c))
|
|
}
|
|
}
|
|
return out.String()
|
|
}
|
|
|
|
// poolWrapper wraps a pool.Pool as an azblob.TransferManager
|
|
type poolWrapper struct {
|
|
pool *pool.Pool
|
|
bufToken chan struct{}
|
|
runToken chan struct{}
|
|
}
|
|
|
|
// newPoolWrapper creates an azblob.TransferManager that will use a
|
|
// pool.Pool with maximum concurrency as specified.
|
|
func (f *Fs) newPoolWrapper(concurrency int) *poolWrapper {
|
|
return &poolWrapper{
|
|
pool: f.pool,
|
|
bufToken: make(chan struct{}, concurrency),
|
|
runToken: make(chan struct{}, concurrency),
|
|
}
|
|
}
|
|
|
|
// Get implements TransferManager.Get().
|
|
func (pw *poolWrapper) Get() []byte {
|
|
pw.bufToken <- struct{}{}
|
|
return pw.pool.Get()
|
|
}
|
|
|
|
// Put implements TransferManager.Put().
|
|
func (pw *poolWrapper) Put(b []byte) {
|
|
pw.pool.Put(b)
|
|
<-pw.bufToken
|
|
}
|
|
|
|
// Run implements TransferManager.Run().
|
|
func (pw *poolWrapper) Run(f func()) {
|
|
pw.runToken <- struct{}{}
|
|
go func() {
|
|
f()
|
|
<-pw.runToken
|
|
}()
|
|
}
|
|
|
|
// Close implements TransferManager.Close().
|
|
func (pw *poolWrapper) Close() {
|
|
}
|
|
|
|
// Converts a string into a pointer to a string
|
|
func pString(s string) *string {
|
|
return &s
|
|
}
|
|
|
|
// readSeekCloser joins an io.Reader and an io.Seeker and provides a no-op io.Closer
|
|
type readSeekCloser struct {
|
|
io.Reader
|
|
io.Seeker
|
|
}
|
|
|
|
// Close does nothing
|
|
func (rs *readSeekCloser) Close() error {
|
|
return nil
|
|
}
|
|
|
|
// increment the slice passed in as LSB binary
|
|
func increment(xs []byte) {
|
|
for i, digit := range xs {
|
|
newDigit := digit + 1
|
|
xs[i] = newDigit
|
|
if newDigit >= digit {
|
|
// exit if no carry
|
|
break
|
|
}
|
|
}
|
|
}
|
|
|
|
var warnStreamUpload sync.Once
|
|
|
|
// uploadMultipart uploads a file using multipart upload
|
|
//
|
|
// Write a larger blob, using CreateBlockBlob, PutBlock, and PutBlockList.
|
|
func (o *Object) uploadMultipart(ctx context.Context, in io.Reader, size int64, blb *blockblob.Client, httpHeaders *blob.HTTPHeaders) (err error) {
|
|
// Calculate correct partSize
|
|
partSize := o.fs.opt.ChunkSize
|
|
totalParts := -1
|
|
|
|
// make concurrency machinery
|
|
concurrency := o.fs.opt.UploadConcurrency
|
|
if concurrency < 1 {
|
|
concurrency = 1
|
|
}
|
|
tokens := pacer.NewTokenDispenser(concurrency)
|
|
|
|
// Note that the max size of file is 4.75 TB (100 MB X 50,000
|
|
// blocks) and this is bigger than the max uncommitted block
|
|
// size (9.52 TB) so we do not need to part commit block lists
|
|
// or garbage collect uncommitted blocks.
|
|
//
|
|
// See: https://docs.microsoft.com/en-gb/rest/api/storageservices/put-block
|
|
|
|
// size can be -1 here meaning we don't know the size of the incoming file. We use ChunkSize
|
|
// buffers here (default 4MB). With a maximum number of parts (50,000) this will be a file of
|
|
// 195GB which seems like a not too unreasonable limit.
|
|
if size == -1 {
|
|
warnStreamUpload.Do(func() {
|
|
fs.Logf(o, "Streaming uploads using chunk size %v will have maximum file size of %v",
|
|
o.fs.opt.ChunkSize, partSize*fs.SizeSuffix(blockblob.MaxBlocks))
|
|
})
|
|
} else {
|
|
partSize = chunksize.Calculator(o, size, blockblob.MaxBlocks, o.fs.opt.ChunkSize)
|
|
if partSize > fs.SizeSuffix(blockblob.MaxStageBlockBytes) {
|
|
return fmt.Errorf("can't upload as it is too big %v - takes more than %d chunks of %v", fs.SizeSuffix(size), fs.SizeSuffix(blockblob.MaxBlocks), fs.SizeSuffix(blockblob.MaxStageBlockBytes))
|
|
}
|
|
totalParts = int(fs.SizeSuffix(size) / partSize)
|
|
if fs.SizeSuffix(size)%partSize != 0 {
|
|
totalParts++
|
|
}
|
|
}
|
|
|
|
fs.Debugf(o, "Multipart upload session started for %d parts of size %v", totalParts, partSize)
|
|
|
|
// unwrap the accounting from the input, we use wrap to put it
|
|
// back on after the buffering
|
|
in, wrap := accounting.UnWrap(in)
|
|
|
|
// FIXME it would be nice to delete uncommitted blocks
|
|
// See: https://github.com/rclone/rclone/issues/5583
|
|
//
|
|
// However there doesn't seem to be an easy way of doing this other than
|
|
// by deleting the target.
|
|
//
|
|
// This means that a failed upload deletes the target which isn't ideal.
|
|
//
|
|
// Uploading a zero length blob and deleting it will remove the
|
|
// uncommitted blocks I think.
|
|
//
|
|
// Could check to see if a file exists already and if it
|
|
// doesn't then create a 0 length file and delete it to flush
|
|
// the uncommitted blocks.
|
|
//
|
|
// This is what azcopy does
|
|
// https://github.com/MicrosoftDocs/azure-docs/issues/36347#issuecomment-541457962
|
|
// defer atexit.OnError(&err, func() {
|
|
// fs.Debugf(o, "Cancelling multipart upload")
|
|
// // Code goes here!
|
|
// })()
|
|
|
|
// Upload the chunks
|
|
var (
|
|
g, gCtx = errgroup.WithContext(ctx)
|
|
remaining = fs.SizeSuffix(size) // remaining size in file for logging only, -1 if size < 0
|
|
position = fs.SizeSuffix(0) // position in file
|
|
memPool = o.fs.getMemoryPool(int64(partSize)) // pool to get memory from
|
|
finished = false // set when we have read EOF
|
|
blocks []string // list of blocks for finalize
|
|
binaryBlockID = make([]byte, 8) // block counter as LSB first 8 bytes
|
|
)
|
|
for part := 0; !finished; part++ {
|
|
// Get a block of memory from the pool and a token which limits concurrency
|
|
tokens.Get()
|
|
buf := memPool.Get()
|
|
|
|
free := func() {
|
|
memPool.Put(buf) // return the buf
|
|
tokens.Put() // return the token
|
|
}
|
|
|
|
// Fail fast, in case an errgroup managed function returns an error
|
|
// gCtx is cancelled. There is no point in uploading all the other parts.
|
|
if gCtx.Err() != nil {
|
|
free()
|
|
break
|
|
}
|
|
|
|
// Read the chunk
|
|
n, err := readers.ReadFill(in, buf) // this can never return 0, nil
|
|
if err == io.EOF {
|
|
if n == 0 { // end if no data
|
|
free()
|
|
break
|
|
}
|
|
finished = true
|
|
} else if err != nil {
|
|
free()
|
|
return fmt.Errorf("multipart upload failed to read source: %w", err)
|
|
}
|
|
buf = buf[:n]
|
|
|
|
// increment the blockID and save the blocks for finalize
|
|
increment(binaryBlockID)
|
|
blockID := base64.StdEncoding.EncodeToString(binaryBlockID)
|
|
blocks = append(blocks, blockID)
|
|
|
|
// Transfer the chunk
|
|
fs.Debugf(o, "Uploading part %d/%d offset %v/%v part size %d", part+1, totalParts, position, fs.SizeSuffix(size), len(buf))
|
|
g.Go(func() (err error) {
|
|
defer free()
|
|
|
|
// Upload the block, with MD5 for check
|
|
md5sum := md5.Sum(buf)
|
|
transactionalMD5 := md5sum[:]
|
|
err = o.fs.pacer.Call(func() (bool, error) {
|
|
bufferReader := bytes.NewReader(buf)
|
|
wrappedReader := wrap(bufferReader)
|
|
rs := readSeekCloser{wrappedReader, bufferReader}
|
|
options := blockblob.StageBlockOptions{
|
|
// Specify the transactional md5 for the body, to be validated by the service.
|
|
TransactionalContentMD5: transactionalMD5,
|
|
}
|
|
_, err = blb.StageBlock(ctx, blockID, &rs, &options)
|
|
return o.fs.shouldRetry(ctx, err)
|
|
})
|
|
if err != nil {
|
|
return fmt.Errorf("multipart upload failed to upload part: %w", err)
|
|
}
|
|
return nil
|
|
})
|
|
|
|
// ready for next block
|
|
if size >= 0 {
|
|
remaining -= partSize
|
|
}
|
|
position += partSize
|
|
}
|
|
err = g.Wait()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
tier := blob.AccessTier(o.fs.opt.AccessTier)
|
|
options := blockblob.CommitBlockListOptions{
|
|
Metadata: o.meta,
|
|
Tier: &tier,
|
|
HTTPHeaders: httpHeaders,
|
|
}
|
|
|
|
// Finalise the upload session
|
|
err = o.fs.pacer.Call(func() (bool, error) {
|
|
_, err := blb.CommitBlockList(ctx, blocks, &options)
|
|
return o.fs.shouldRetry(ctx, err)
|
|
})
|
|
if err != nil {
|
|
return fmt.Errorf("multipart upload failed to finalize: %w", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// uploadSinglepart uploads a short blob using a single part upload
|
|
func (o *Object) uploadSinglepart(ctx context.Context, in io.Reader, size int64, blb *blockblob.Client, httpHeaders *blob.HTTPHeaders) (err error) {
|
|
// fs.Debugf(o, "Single part upload starting of object %d bytes", size)
|
|
if size > o.fs.poolSize || size < 0 {
|
|
return fmt.Errorf("internal error: single part upload size too big %d > %d", size, o.fs.opt.ChunkSize)
|
|
}
|
|
|
|
buf := o.fs.pool.Get()
|
|
defer o.fs.pool.Put(buf)
|
|
|
|
n, err := readers.ReadFill(in, buf)
|
|
if err == nil {
|
|
// Check to see whether in is exactly len(buf) or bigger
|
|
var buf2 = []byte{0}
|
|
n2, err2 := readers.ReadFill(in, buf2)
|
|
if n2 != 0 || err2 != io.EOF {
|
|
return fmt.Errorf("single part upload read failed: object longer than expected (expecting %d but got > %d)", size, len(buf))
|
|
}
|
|
}
|
|
if err != nil && err != io.EOF {
|
|
return fmt.Errorf("single part upload read failed: %w", err)
|
|
}
|
|
if int64(n) != size {
|
|
return fmt.Errorf("single part upload: expecting to read %d bytes but read %d", size, n)
|
|
}
|
|
|
|
b := bytes.NewReader(buf[:n])
|
|
rs := &readSeekCloser{Reader: b, Seeker: b}
|
|
|
|
tier := blob.AccessTier(o.fs.opt.AccessTier)
|
|
options := blockblob.UploadOptions{
|
|
Metadata: o.meta,
|
|
Tier: &tier,
|
|
HTTPHeaders: httpHeaders,
|
|
}
|
|
|
|
// Don't retry, return a retry error instead
|
|
return o.fs.pacer.CallNoRetry(func() (bool, error) {
|
|
_, err = blb.Upload(ctx, rs, &options)
|
|
return o.fs.shouldRetry(ctx, err)
|
|
})
|
|
}
|
|
|
|
// Update the object with the contents of the io.Reader, modTime and size
|
|
//
|
|
// The new object may have been created if an error is returned
|
|
func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (err error) {
|
|
if o.accessTier == blob.AccessTierArchive {
|
|
if o.fs.opt.ArchiveTierDelete {
|
|
fs.Debugf(o, "deleting archive tier blob before updating")
|
|
err = o.Remove(ctx)
|
|
if err != nil {
|
|
return fmt.Errorf("failed to delete archive blob before updating: %w", err)
|
|
}
|
|
} else {
|
|
return errCantUpdateArchiveTierBlobs
|
|
}
|
|
}
|
|
container, containerPath := o.split()
|
|
if container == "" || containerPath == "" {
|
|
return fmt.Errorf("can't upload to root - need a container")
|
|
}
|
|
err = o.fs.makeContainer(ctx, container)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Update Mod time
|
|
o.updateMetadataWithModTime(src.ModTime(ctx))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Create the HTTP headers for the upload
|
|
httpHeaders := blob.HTTPHeaders{
|
|
BlobContentType: pString(fs.MimeType(ctx, src)),
|
|
}
|
|
|
|
// Compute the Content-MD5 of the file. As we stream all uploads it
|
|
// will be set in PutBlockList API call using the 'x-ms-blob-content-md5' header
|
|
if !o.fs.opt.DisableCheckSum {
|
|
if sourceMD5, _ := src.Hash(ctx, hash.MD5); sourceMD5 != "" {
|
|
sourceMD5bytes, err := hex.DecodeString(sourceMD5)
|
|
if err == nil {
|
|
httpHeaders.BlobContentMD5 = sourceMD5bytes
|
|
} else {
|
|
fs.Debugf(o, "Failed to decode %q as MD5: %v", sourceMD5, err)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Apply upload options (also allows one to overwrite content-type)
|
|
for _, option := range options {
|
|
key, value := option.Header()
|
|
lowerKey := strings.ToLower(key)
|
|
switch lowerKey {
|
|
case "":
|
|
// ignore
|
|
case "cache-control":
|
|
httpHeaders.BlobCacheControl = pString(value)
|
|
case "content-disposition":
|
|
httpHeaders.BlobContentDisposition = pString(value)
|
|
case "content-encoding":
|
|
httpHeaders.BlobContentEncoding = pString(value)
|
|
case "content-language":
|
|
httpHeaders.BlobContentLanguage = pString(value)
|
|
case "content-type":
|
|
httpHeaders.BlobContentType = pString(value)
|
|
}
|
|
}
|
|
|
|
blb := o.fs.getBlockBlobSVC(container, containerPath)
|
|
size := src.Size()
|
|
multipartUpload := size < 0 || size > o.fs.poolSize
|
|
|
|
if multipartUpload {
|
|
err = o.uploadMultipart(ctx, in, size, blb, &httpHeaders)
|
|
} else {
|
|
err = o.uploadSinglepart(ctx, in, size, blb, &httpHeaders)
|
|
}
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Refresh metadata on object
|
|
o.clearMetaData()
|
|
err = o.readMetaData()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// If tier is not changed or not specified, do not attempt to invoke `SetBlobTier` operation
|
|
if o.fs.opt.AccessTier == string(defaultAccessTier) || o.fs.opt.AccessTier == string(o.AccessTier()) {
|
|
return nil
|
|
}
|
|
|
|
// Now, set blob tier based on configured access tier
|
|
return o.SetTier(o.fs.opt.AccessTier)
|
|
}
|
|
|
|
// Remove an object
|
|
func (o *Object) Remove(ctx context.Context) error {
|
|
blb := o.getBlobSVC()
|
|
//only := blob.DeleteSnapshotsOptionTypeOnly
|
|
opt := blob.DeleteOptions{
|
|
//DeleteSnapshots: &only,
|
|
}
|
|
return o.fs.pacer.Call(func() (bool, error) {
|
|
_, err := blb.Delete(ctx, &opt)
|
|
return o.fs.shouldRetry(ctx, err)
|
|
})
|
|
}
|
|
|
|
// MimeType of an Object if known, "" otherwise
|
|
func (o *Object) MimeType(ctx context.Context) string {
|
|
return o.mimeType
|
|
}
|
|
|
|
// AccessTier of an object, default is of type none
|
|
func (o *Object) AccessTier() blob.AccessTier {
|
|
return o.accessTier
|
|
}
|
|
|
|
// SetTier performs changing object tier
|
|
func (o *Object) SetTier(tier string) error {
|
|
if !validateAccessTier(tier) {
|
|
return fmt.Errorf("tier %s not supported by Azure Blob Storage", tier)
|
|
}
|
|
|
|
// Check if current tier already matches with desired tier
|
|
if o.GetTier() == tier {
|
|
return nil
|
|
}
|
|
desiredAccessTier := blob.AccessTier(tier)
|
|
blb := o.getBlobSVC()
|
|
ctx := context.Background()
|
|
priority := blob.RehydratePriorityStandard
|
|
opt := blob.SetTierOptions{
|
|
RehydratePriority: &priority,
|
|
}
|
|
err := o.fs.pacer.Call(func() (bool, error) {
|
|
_, err := blb.SetTier(ctx, desiredAccessTier, &opt)
|
|
return o.fs.shouldRetry(ctx, err)
|
|
})
|
|
|
|
if err != nil {
|
|
return fmt.Errorf("failed to set Blob Tier: %w", err)
|
|
}
|
|
|
|
// Set access tier on local object also, this typically
|
|
// gets updated on get blob properties
|
|
o.accessTier = desiredAccessTier
|
|
fs.Debugf(o, "Successfully changed object tier to %s", tier)
|
|
|
|
return nil
|
|
}
|
|
|
|
// GetTier returns object tier in azure as string
|
|
func (o *Object) GetTier() string {
|
|
return string(o.accessTier)
|
|
}
|
|
|
|
// Check the interfaces are satisfied
|
|
var (
|
|
_ fs.Fs = &Fs{}
|
|
_ fs.Copier = &Fs{}
|
|
_ fs.PutStreamer = &Fs{}
|
|
_ fs.Purger = &Fs{}
|
|
_ fs.ListRer = &Fs{}
|
|
_ fs.Object = &Object{}
|
|
_ fs.MimeTyper = &Object{}
|
|
_ fs.GetTierer = &Object{}
|
|
_ fs.SetTierer = &Object{}
|
|
)
|