Documentation

Overview

Package uplink (this specific package) is deprecated and kept for backwards compatibility only. You're almost certainly looking for the newer storj.io/uplink package, where docs can be found at https://pkg.go.dev/storj.io/uplink

Index

Constants

This section is empty.

Variables

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var (

	// Error is the toplevel class of errors for the uplink library.
	Error = errs.Class("libuplink")
)

Functions

This section is empty.

Types

type APIKey

type APIKey struct {
	// contains filtered or unexported fields
}

APIKey represents an access credential to certain resources

func ParseAPIKey

func ParseAPIKey(val string) (APIKey, error)

ParseAPIKey parses an API key

func (*APIKey) IsZero

func (a *APIKey) IsZero() bool

IsZero returns if the api key is an uninitialized value

func (APIKey) Restrict

func (a APIKey) Restrict(caveat macaroon.Caveat) (APIKey, error)

Restrict generates a new APIKey with the provided Caveat attached.

func (APIKey) Serialize

func (a APIKey) Serialize() string

Serialize serializes the API key to a string

type Bucket

type Bucket struct {
	BucketConfig
	Name    string
	Created time.Time
	// contains filtered or unexported fields
}

Bucket represents operations you can perform on a bucket

func (*Bucket) Close

func (b *Bucket) Close() error

Close closes the Bucket session.

func (*Bucket) DeleteObject

func (b *Bucket) DeleteObject(ctx context.Context, path storj.Path) (err error)

DeleteObject removes an object, if authorized.

func (*Bucket) Download

func (b *Bucket) Download(ctx context.Context, path storj.Path) (_ io.ReadCloser, err error)

Download creates a new reader that downloads the object data.

func (*Bucket) DownloadRange

func (b *Bucket) DownloadRange(ctx context.Context, path storj.Path, start, limit int64) (_ io.ReadCloser, err error)

DownloadRange creates a new reader that downloads the object data starting from start and upto start + limit.

func (*Bucket) ListObjects

func (b *Bucket) ListObjects(ctx context.Context, cfg *ListOptions) (list storj.ObjectList, err error)

ListObjects lists objects a user is authorized to see.

func (*Bucket) NewReader

func (b *Bucket) NewReader(ctx context.Context, path storj.Path) (_ io.ReadCloser, err error)

NewReader creates a new reader that downloads the object data.

Deprecated: use Download or DownloadRange instead.

func (*Bucket) NewWriter

func (b *Bucket) NewWriter(ctx context.Context, path storj.Path, opts *UploadOptions) (_ io.WriteCloser, err error)

NewWriter creates a writer which uploads the object.

func (*Bucket) OpenObject

func (b *Bucket) OpenObject(ctx context.Context, path storj.Path) (o *Object, err error)

OpenObject returns an Object handle, if authorized.

func (*Bucket) UploadObject

func (b *Bucket) UploadObject(ctx context.Context, path storj.Path, data io.Reader, opts *UploadOptions) (err error)

UploadObject uploads a new object, if authorized.

type BucketConfig

type BucketConfig struct {
	// PathCipher indicates which cipher suite is to be used for path
	// encryption within the new Bucket. If not set, AES-GCM encryption
	// will be used.
	PathCipher storj.CipherSuite

	// EncryptionParameters specifies the default encryption parameters to
	// be used for data encryption of new Objects in this bucket.
	EncryptionParameters storj.EncryptionParameters

	// Volatile groups config values that are likely to change semantics
	// or go away entirely between releases. Be careful when using them!
	Volatile struct {
		// RedundancyScheme defines the default Reed-Solomon and/or
		// Forward Error Correction encoding parameters to be used by
		// objects in this Bucket.
		RedundancyScheme storj.RedundancyScheme
		// SegmentsSize is the default segment size to use for new
		// objects in this Bucket.
		SegmentsSize memory.Size
	}
}

BucketConfig holds information about a bucket's configuration. This is filled in by the caller for use with CreateBucket(), or filled in by the library as Bucket.Config when a bucket is returned from OpenBucket().

type BucketListOptions

type BucketListOptions = storj.BucketListOptions

BucketListOptions controls options to the ListBuckets() call.

type Config

type Config struct {
	// Volatile groups config values that are likely to change semantics
	// or go away entirely between releases. Be careful when using them!
	Volatile struct {
		// Log is the logger to use for uplink components
		Log *zap.Logger

		// TLS defines options that affect TLS negotiation for outbound
		// connections initiated by this uplink.
		TLS struct {
			// SkipPeerCAWhitelist determines whether to require all
			// remote hosts to have identity certificates signed by
			// Certificate Authorities in the default whitelist. If
			// set to true, the whitelist will be ignored.
			SkipPeerCAWhitelist bool

			// PeerCAWhitelistPath gives the path to a CA cert
			// whitelist file. It is ignored if SkipPeerCAWhitelist
			// is set. If empty, the internal default peer whitelist
			// is used.
			PeerCAWhitelistPath string
		}

		// PeerIDVersion is the identity versions remote peers to this node
		// will be supported by this node.
		PeerIDVersion string

		// MaxInlineSize determines whether the uplink will attempt to
		// store a new object in the satellite's metainfo. Objects at
		// or below this size will be marked for inline storage, and
		// objects above this size will not. (The satellite may reject
		// the inline storage and require remote storage, still.)
		MaxInlineSize memory.Size

		// MaxMemory is the default maximum amount of memory to be
		// allocated for read buffers while performing decodes of
		// objects. (This option is overrideable per Bucket if the user
		// so desires.) If set to zero, the library default (4 MiB) will
		// be used. If set to a negative value, the system will use the
		// smallest amount of memory it can.
		MaxMemory memory.Size

		// PartnerID is the identity given to the partner for value
		// attribution.
		//
		// Deprecated: prefer UserAgent
		PartnerID string

		// UserAgent for the product using the library.
		UserAgent string

		// DialTimeout is the maximum time to wait connecting to another node.
		// If not set, the library default (20 seconds) will be used.
		DialTimeout time.Duration

		// PBKDFConcurrency is the passphrase-based key derivation function
		// concurrency to use.
		// WARNING: changing this value fundamentally changes how keys are
		// derived. Keys generated with one value will not be the same keys
		// as generated with other values! Leaving this at the default is
		// highly recommended.
		//
		// Unfortunately, up to version v0.26.2, we automatically set this to the
		// number of CPU cores your processor had. If you are having trouble
		// decrypting data uploaded with v0.26.2 or older, you may need to set
		// this value to the number of cores your computer had at the time
		// you entered a passphrase.
		//
		// Otherwise, this value should be left at the default value of 0
		// (which means to use the internal default).
		PBKDFConcurrency int
	}
}

Config represents configuration options for an Uplink

type EncryptionAccess

type EncryptionAccess struct {
	// contains filtered or unexported fields
}

EncryptionAccess represents an encryption access context. It holds information about how various buckets and objects should be encrypted and decrypted.

func NewEncryptionAccess

func NewEncryptionAccess() *EncryptionAccess

NewEncryptionAccess creates an encryption access context

func NewEncryptionAccessWithDefaultKey

func NewEncryptionAccessWithDefaultKey(defaultKey storj.Key) *EncryptionAccess

NewEncryptionAccessWithDefaultKey creates an encryption access context with a default key set. Use (*Project).SaltedKeyFromPassphrase to generate a default key

func ParseEncryptionAccess

func ParseEncryptionAccess(serialized string) (*EncryptionAccess, error)

ParseEncryptionAccess parses a base58 serialized encryption access into a working one.

func (*EncryptionAccess) Import

func (s *EncryptionAccess) Import(other *EncryptionAccess) error

Import merges the other encryption access context into this one. In cases of conflicting path decryption settings (including if both accesses have a default key), the new settings are kept.

func (*EncryptionAccess) Restrict

func (s *EncryptionAccess) Restrict(apiKey APIKey, restrictions ...EncryptionRestriction) (APIKey, *EncryptionAccess, error)

Restrict creates a new EncryptionAccess with no default key, where the key material in the new access is just enough to allow someone to access all of the given restrictions but no more.

func (*EncryptionAccess) Serialize

func (s *EncryptionAccess) Serialize() (string, error)

Serialize turns an EncryptionAccess into base58

func (*EncryptionAccess) SetDefaultKey

func (s *EncryptionAccess) SetDefaultKey(defaultKey storj.Key)

SetDefaultKey sets the default key for the encryption access context. Use (*Project).SaltedKeyFromPassphrase to generate a default key

func (*EncryptionAccess) SetDefaultPathCipher

func (s *EncryptionAccess) SetDefaultPathCipher(defaultPathCipher storj.CipherSuite)

SetDefaultPathCipher sets the default path cipher for the encryption access context.

func (*EncryptionAccess) Store

func (s *EncryptionAccess) Store() *encryption.Store

Store returns the underlying encryption store for the access context.

type EncryptionRestriction

type EncryptionRestriction struct {
	Bucket     string
	PathPrefix storj.Path
}

EncryptionRestriction represents a scenario where some set of objects may need to be encrypted/decrypted

type ListOptions

type ListOptions = storj.ListOptions

ListOptions controls options for the ListObjects() call.

type Object

type Object struct {
	// Meta holds the metainfo associated with the Object.
	Meta ObjectMeta
	// contains filtered or unexported fields
}

An Object is a sequence of bytes with associated metadata, stored in the Storj network (or being prepared for such storage). It belongs to a specific bucket, and has a path and a size. It is comparable to a "file" in a conventional filesystem.

func (*Object) Close

func (o *Object) Close() error

Close closes the Object.

func (*Object) DownloadRange

func (o *Object) DownloadRange(ctx context.Context, offset, length int64) (_ io.ReadCloser, err error)

DownloadRange returns an Object's data. A length of -1 will mean (Object.Size - offset).

type ObjectMeta

type ObjectMeta struct {
	// Bucket gives the name of the bucket in which an Object is placed.
	Bucket string
	// Path is the path of the Object within the Bucket. Path components are
	// forward-slash-separated, like Unix file paths ("one/two/three").
	Path storj.Path
	// IsPrefix is true if this ObjectMeta does not refer to a specific
	// Object, but to some arbitrary point in the path hierarchy. This would
	// be called a "folder" or "directory" in a typical filesystem.
	IsPrefix bool

	// ContentType, if set, gives a MIME content-type for the Object, as
	// set when the object was created.
	ContentType string
	// Metadata contains the additional information about an Object that was
	// set when the object was created. See UploadOptions.Metadata for more
	// information.
	Metadata map[string]string

	// Created is the time at which the Object was created.
	Created time.Time
	// Modified is the time at which the Object was last modified.
	Modified time.Time
	// Expires is the time at which the Object expires (after which it will
	// be automatically deleted from storage nodes).
	Expires time.Time

	// Size gives the size of the Object in bytes.
	Size int64
	// Checksum gives a checksum of the contents of the Object.
	Checksum []byte

	// Volatile groups config values that are likely to change semantics
	// or go away entirely between releases. Be careful when using them!
	Volatile struct {
		// EncryptionParameters gives the encryption parameters being
		// used for the Object's data encryption.
		EncryptionParameters storj.EncryptionParameters

		// RedundancyScheme determines the Reed-Solomon and/or Forward
		// Error Correction encoding parameters to be used for this
		// Object.
		RedundancyScheme storj.RedundancyScheme

		// SegmentsSize gives the segment size being used for the
		// Object's data storage.
		SegmentsSize int64
	}
}

ObjectMeta contains metadata about a specific Object.

type Project

type Project struct {
	// contains filtered or unexported fields
}

Project represents a specific project access session.

func (*Project) Close

func (p *Project) Close() error

Close closes the Project. Opened buckets or objects must not be used after calling Close.

func (*Project) CreateBucket

func (p *Project) CreateBucket(ctx context.Context, name string, cfg *BucketConfig) (bucket storj.Bucket, err error)

CreateBucket creates a new bucket if authorized.

func (*Project) DeleteBucket

func (p *Project) DeleteBucket(ctx context.Context, bucket string) (err error)

DeleteBucket deletes a bucket if authorized. If the bucket contains any Objects at the time of deletion, they may be lost permanently.

func (*Project) GetBucketInfo

func (p *Project) GetBucketInfo(ctx context.Context, bucket string) (b storj.Bucket, bi *BucketConfig, err error)

GetBucketInfo returns info about the requested bucket if authorized.

func (*Project) ListBuckets

func (p *Project) ListBuckets(ctx context.Context, opts *BucketListOptions) (bl storj.BucketList, err error)

ListBuckets will list authorized buckets.

func (*Project) OpenBucket

func (p *Project) OpenBucket(ctx context.Context, bucketName string, access *EncryptionAccess) (b *Bucket, err error)

OpenBucket returns a Bucket handle with the given EncryptionAccess information.

func (*Project) SaltedKeyFromPassphrase

func (p *Project) SaltedKeyFromPassphrase(ctx context.Context, passphrase string) (_ *storj.Key, err error)

SaltedKeyFromPassphrase returns a key generated from the given passphrase using a stable, project-specific salt

type Scope

type Scope struct {
	SatelliteAddr string

	APIKey APIKey

	EncryptionAccess *EncryptionAccess
}

Scope is a serializable type that represents all of the credentials you need to open a project and some amount of buckets

func ParseScope

func ParseScope(scopeb58 string) (*Scope, error)

ParseScope unmarshals a base58 encoded scope protobuf and decodes the fields into the Scope convenience type. It will return an error if the protobuf is malformed or field validation fails.

func (*Scope) Serialize

func (s *Scope) Serialize() (string, error)

Serialize serializes a Scope to a base58-encoded string

type Uplink struct {
	// contains filtered or unexported fields
}

Uplink represents the main entrypoint to Storj V3. An Uplink connects to a specific Satellite and caches connections and resources, allowing one to create sessions delineated by specific access controls.

func NewUplink(ctx context.Context, cfg *Config) (_ *Uplink, err error)

NewUplink creates a new Uplink. This is the first step to create an uplink session with a user specified config or with default config, if nil config

func (*Uplink) Close

func (u *Uplink) Close() error

Close closes the Uplink. Opened projects, buckets or objects must not be used after calling Close.

func (*Uplink) OpenProject

func (u *Uplink) OpenProject(ctx context.Context, satelliteAddr string, apiKey APIKey) (p *Project, err error)

OpenProject returns a Project handle with the given APIKey

type UploadOptions

type UploadOptions struct {
	// ContentType, if set, gives a MIME content-type for the Object.
	ContentType string
	// Metadata contains additional information about an Object. It can
	// hold arbitrary textual fields and can be retrieved together with the
	// Object. Field names can be at most 1024 bytes long. Field values are
	// not individually limited in size, but the total of all metadata
	// (fields and values) can not exceed 4 kiB.
	Metadata map[string]string
	// Expires is the time at which the new Object can expire (be deleted
	// automatically from storage nodes).
	Expires time.Time

	// Volatile groups config values that are likely to change semantics
	// or go away entirely between releases. Be careful when using them!
	Volatile struct {
		// EncryptionParameters determines the cipher suite to use for
		// the Object's data encryption. If not set, the Bucket's
		// defaults will be used.
		EncryptionParameters storj.EncryptionParameters

		// RedundancyScheme determines the Reed-Solomon and/or Forward
		// Error Correction encoding parameters to be used for this
		// Object.
		RedundancyScheme storj.RedundancyScheme
	}
}

UploadOptions controls options about uploading a new Object, if authorized.