258 lines
8.7 KiB
Go
258 lines
8.7 KiB
Go
//go:build !plan9 && !solaris && !js
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// +build !plan9,!solaris,!js
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package oracleobjectstorage
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import (
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"time"
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"github.com/rclone/rclone/fs"
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"github.com/rclone/rclone/fs/config"
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"github.com/rclone/rclone/lib/encoder"
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)
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const (
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maxSizeForCopy = 4768 * 1024 * 1024
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minChunkSize = fs.SizeSuffix(1024 * 1024 * 5)
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defaultUploadCutoff = fs.SizeSuffix(200 * 1024 * 1024)
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defaultUploadConcurrency = 10
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maxUploadCutoff = fs.SizeSuffix(5 * 1024 * 1024 * 1024)
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minSleep = 100 * time.Millisecond
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maxSleep = 5 * time.Minute
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decayConstant = 1 // bigger for slower decay, exponential
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defaultCopyTimeoutDuration = fs.Duration(time.Minute)
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)
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const (
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userPrincipal = "user_principal_auth"
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instancePrincipal = "instance_principal_auth"
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resourcePrincipal = "resource_principal_auth"
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environmentAuth = "env_auth"
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noAuth = "no_auth"
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userPrincipalHelpText = `use an OCI user and an API key for authentication.
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you’ll need to put in a config file your tenancy OCID, user OCID, region, the path, fingerprint to an API key.
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https://docs.oracle.com/en-us/iaas/Content/API/Concepts/sdkconfig.htm`
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instancePrincipalHelpText = `use instance principals to authorize an instance to make API calls.
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each instance has its own identity, and authenticates using the certificates that are read from instance metadata.
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https://docs.oracle.com/en-us/iaas/Content/Identity/Tasks/callingservicesfrominstances.htm`
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resourcePrincipalHelpText = `use resource principals to make API calls`
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environmentAuthHelpText = `automatically pickup the credentials from runtime(env), first one to provide auth wins`
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noAuthHelpText = `no credentials needed, this is typically for reading public buckets`
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)
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// Options defines the configuration for this backend
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type Options struct {
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Provider string `config:"provider"`
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Compartment string `config:"compartment"`
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Namespace string `config:"namespace"`
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Region string `config:"region"`
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Endpoint string `config:"endpoint"`
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Enc encoder.MultiEncoder `config:"encoding"`
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ConfigFile string `config:"config_file"`
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ConfigProfile string `config:"config_profile"`
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UploadCutoff fs.SizeSuffix `config:"upload_cutoff"`
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ChunkSize fs.SizeSuffix `config:"chunk_size"`
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UploadConcurrency int `config:"upload_concurrency"`
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DisableChecksum bool `config:"disable_checksum"`
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CopyCutoff fs.SizeSuffix `config:"copy_cutoff"`
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CopyTimeout fs.Duration `config:"copy_timeout"`
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StorageTier string `config:"storage_tier"`
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LeavePartsOnError bool `config:"leave_parts_on_error"`
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NoCheckBucket bool `config:"no_check_bucket"`
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}
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func newOptions() []fs.Option {
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return []fs.Option{{
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Name: fs.ConfigProvider,
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Help: "Choose your Auth Provider",
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Required: true,
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Default: environmentAuth,
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Examples: []fs.OptionExample{{
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Value: environmentAuth,
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Help: environmentAuthHelpText,
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}, {
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Value: userPrincipal,
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Help: userPrincipalHelpText,
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}, {
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Value: instancePrincipal,
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Help: instancePrincipalHelpText,
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}, {
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Value: resourcePrincipal,
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Help: resourcePrincipalHelpText,
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}, {
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Value: noAuth,
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Help: noAuthHelpText,
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}},
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}, {
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Name: "namespace",
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Help: "Object storage namespace",
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Required: true,
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}, {
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Name: "compartment",
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Help: "Object storage compartment OCID",
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Provider: "!no_auth",
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Required: true,
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}, {
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Name: "region",
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Help: "Object storage Region",
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Required: true,
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}, {
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Name: "endpoint",
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Help: "Endpoint for Object storage API.\n\nLeave blank to use the default endpoint for the region.",
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Required: false,
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}, {
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Name: "config_file",
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Help: "Path to OCI config file",
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Provider: userPrincipal,
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Default: "~/.oci/config",
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Examples: []fs.OptionExample{{
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Value: "~/.oci/config",
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Help: "oci configuration file location",
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}},
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}, {
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Name: "config_profile",
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Help: "Profile name inside the oci config file",
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Provider: userPrincipal,
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Default: "Default",
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Examples: []fs.OptionExample{{
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Value: "Default",
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Help: "Use the default profile",
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}},
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}, {
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// Mapping from here: https://github.com/oracle/oci-go-sdk/blob/master/objectstorage/storage_tier.go
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Name: "storage_tier",
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Help: "The storage class to use when storing new objects in storage. https://docs.oracle.com/en-us/iaas/Content/Object/Concepts/understandingstoragetiers.htm",
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Default: "Standard",
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Advanced: true,
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Examples: []fs.OptionExample{{
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Value: "Standard",
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Help: "Standard storage tier, this is the default tier",
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}, {
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Value: "InfrequentAccess",
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Help: "InfrequentAccess storage tier",
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}, {
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Value: "Archive",
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Help: "Archive storage tier",
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}},
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}, {
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Name: "upload_cutoff",
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Help: `Cutoff for switching to chunked upload.
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Any files larger than this will be uploaded in chunks of chunk_size.
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The minimum is 0 and the maximum is 5 GiB.`,
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Default: defaultUploadCutoff,
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Advanced: true,
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}, {
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Name: "chunk_size",
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Help: `Chunk size to use for uploading.
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When uploading files larger than upload_cutoff or files with unknown
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size (e.g. from "rclone rcat" or uploaded with "rclone mount" or google
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photos or google docs) they will be uploaded as multipart uploads
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using this chunk size.
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Note that "upload_concurrency" chunks of this size are buffered
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in memory per transfer.
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If you are transferring large files over high-speed links and you have
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enough memory, then increasing this will speed up the transfers.
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Rclone will automatically increase the chunk size when uploading a
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large file of known size to stay below the 10,000 chunks limit.
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Files of unknown size are uploaded with the configured
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chunk_size. Since the default chunk size is 5 MiB and there can be at
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most 10,000 chunks, this means that by default the maximum size of
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a file you can stream upload is 48 GiB. If you wish to stream upload
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larger files then you will need to increase chunk_size.
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Increasing the chunk size decreases the accuracy of the progress
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statistics displayed with "-P" flag.
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`,
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Default: minChunkSize,
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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 links
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and these uploads do not fully utilize your bandwidth, then increasing
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this may help to speed up the transfers.`,
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Default: defaultUploadConcurrency,
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Advanced: true,
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}, {
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Name: "copy_cutoff",
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Help: `Cutoff for switching to multipart copy.
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Any files larger than this that need to be server-side copied will be
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copied in chunks of this size.
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The minimum is 0 and the maximum is 5 GiB.`,
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Default: fs.SizeSuffix(maxSizeForCopy),
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Advanced: true,
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}, {
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Name: "copy_timeout",
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Help: `Timeout for copy.
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Copy is an asynchronous operation, specify timeout to wait for copy to succeed
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`,
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Default: defaultCopyTimeoutDuration,
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Advanced: true,
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}, {
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Name: "disable_checksum",
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Help: `Don't store MD5 checksum with object metadata.
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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
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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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}, {
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Name: config.ConfigEncoding,
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Help: config.ConfigEncodingHelp,
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Advanced: true,
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// Any UTF-8 character is valid in a key, however it can't handle
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// invalid UTF-8 and / have a special meaning.
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//
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// The SDK can't seem to handle uploading files called '.
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// - initial / encoding
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// - doubled / encoding
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// - trailing / encoding
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// so that OSS keys are always valid file names
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Default: encoder.EncodeInvalidUtf8 |
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encoder.EncodeSlash |
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encoder.EncodeDot,
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}, {
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Name: "leave_parts_on_error",
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Help: `If true avoid calling abort upload on a failure, leaving all successfully uploaded parts on S3 for manual recovery.
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It should be set to true for resuming uploads across different sessions.
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WARNING: Storing parts of an incomplete multipart upload counts towards space usage on object storage and will add
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additional costs if not cleaned up.
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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: "no_check_bucket",
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Help: `If set, don't attempt to check the bucket exists or create it.
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This can be useful when trying to minimise the number of transactions
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rclone does if you know the bucket exists already.
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It can also be needed if the user you are using does not have bucket
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creation permissions.
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`,
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Default: false,
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Advanced: true,
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}}
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}
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