metabase

package
v1.28.2 Latest Latest
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 Go to latest Published: Apr 27, 2021 License: AGPL-3.0 Imports: 31 Imported by: 9

Documentation

Overview

Package metabase implements storing objects and segements.

Index

Constants

View Source 
const (
	Delimiter        = '/'
	LastSegmentName  = "l"
	LastSegmentIndex = uint32(math.MaxUint32)
)

Common constants for segment keys.

View Source 
const (
	// Pending means that the object is being uploaded or that the client failed during upload.
	// The failed upload may be continued in the future.
	Pending = ObjectStatus(1)
	// Committed means that the object is finished and should be visible for general listing.
	Committed = ObjectStatus(3)
)
View Source 
const MaxListLimit = 1000

MaxListLimit is the maximum number of items the client can request for listing.

View Source 
const NextVersion = Version(0)

NextVersion means that the version should be chosen automatically.

Variables

View Source 
var (
	// ErrInvalidRequest is used to indicate invalid requests.
	ErrInvalidRequest = errs.Class("metabase: invalid request")
	// ErrConflict is used to indicate conflict with the request.
	ErrConflict = errs.Class("metabase: conflict")
)
View Source 
var ErrSegmentNotFound = errs.Class("segment not found")

ErrSegmentNotFound is an error class for non-existing segment.

View Source 
var Error = errs.Class("metabase")

Error is the default error for metabase.

Functions

func EqualAliasPieces 

func EqualAliasPieces(xs, ys AliasPieces) bool

EqualAliasPieces compares whether xs and ys are equal.

Types

type AliasPiece 

type AliasPiece struct {
	Number uint16
	Alias  NodeAlias
}

AliasPiece is a piece with alias node ID.

type AliasPieces 

type AliasPieces []AliasPiece

AliasPieces is a slice of AliasPiece.

func (AliasPieces) Bytes 

func (aliases AliasPieces) Bytes() ([]byte, error)

Bytes compresses alias pieces to a slice of bytes.

func (*AliasPieces) Scan 

func (aliases *AliasPieces) Scan(src interface{}) error

Scan implements the database/sql Scanner interface.

func (*AliasPieces) SetBytes 

func (aliases *AliasPieces) SetBytes(data []byte) error

SetBytes decompresses alias pieces from a slice of bytes.

func (AliasPieces) Value 

func (aliases AliasPieces) Value() (driver.Value, error)

Value implements the database/sql/driver Valuer interface.

type BeginObjectExactVersion 

type BeginObjectExactVersion struct {
	ObjectStream

	ExpiresAt              *time.Time
	ZombieDeletionDeadline *time.Time

	Encryption storj.EncryptionParameters
}

BeginObjectExactVersion contains arguments necessary for starting an object upload.

type BeginObjectNextVersion 

type BeginObjectNextVersion struct {
	ObjectStream

	ExpiresAt              *time.Time
	ZombieDeletionDeadline *time.Time

	Encryption storj.EncryptionParameters
}

BeginObjectNextVersion contains arguments necessary for starting an object upload.

type BeginSegment 

type BeginSegment struct {
	ObjectStream

	Position    SegmentPosition
	RootPieceID storj.PieceID
	Pieces      Pieces
}

BeginSegment contains options to verify, whether a new segment upload can be started.

type BucketEmpty 

type BucketEmpty struct {
	ProjectID  uuid.UUID
	BucketName string
}

BucketEmpty contains arguments necessary for checking if bucket is empty.

type BucketLocation 

type BucketLocation struct {
	ProjectID  uuid.UUID
	BucketName string
}

BucketLocation defines a bucket that belongs to a project.

func ParseBucketPrefix 

func ParseBucketPrefix(prefix BucketPrefix) (BucketLocation, error)

ParseBucketPrefix parses BucketPrefix.

func ParseCompactBucketPrefix 

func ParseCompactBucketPrefix(compactPrefix []byte) (BucketLocation, error)

ParseCompactBucketPrefix parses BucketPrefix.

func (BucketLocation) CompactPrefix 

func (loc BucketLocation) CompactPrefix() []byte

CompactPrefix converts bucket location into bucket prefix with compact project ID.

func (BucketLocation) Prefix 

func (loc BucketLocation) Prefix() BucketPrefix

Prefix converts bucket location into bucket prefix.

func (BucketLocation) Verify 

func (loc BucketLocation) Verify() error

Verify object location fields.

type BucketPrefix 

type BucketPrefix string

BucketPrefix consists of <project id>/<bucket name>.

type CommitInlineSegment 

type CommitInlineSegment struct {
	ObjectStream

	Position SegmentPosition

	EncryptedKeyNonce []byte
	EncryptedKey      []byte

	PlainOffset   int64 // offset in the original data stream
	PlainSize     int32 // size before encryption
	EncryptedETag []byte

	InlineData []byte
}

CommitInlineSegment contains all necessary information about the segment.

type CommitObject 

type CommitObject struct {
	ObjectStream

	Encryption storj.EncryptionParameters

	EncryptedMetadata             []byte
	EncryptedMetadataNonce        []byte
	EncryptedMetadataEncryptedKey []byte
}

CommitObject contains arguments necessary for committing an object.

type CommitObjectWithSegments 

type CommitObjectWithSegments struct {
	ObjectStream

	EncryptedMetadata             []byte
	EncryptedMetadataNonce        []byte
	EncryptedMetadataEncryptedKey []byte

	// TODO: this probably should use segment ranges rather than individual items
	Segments []SegmentPosition
}

CommitObjectWithSegments contains arguments necessary for committing an object.

type CommitSegment 

type CommitSegment struct {
	ObjectStream

	Position    SegmentPosition
	RootPieceID storj.PieceID

	EncryptedKeyNonce []byte
	EncryptedKey      []byte

	PlainOffset   int64 // offset in the original data stream
	PlainSize     int32 // size before encryption
	EncryptedSize int32 // segment size after encryption

	EncryptedETag []byte

	Redundancy storj.RedundancyScheme

	Pieces Pieces
}

CommitSegment contains all necessary information about the segment.

type DB 

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

DB implements a database for storing objects and segments.

func Open 

func Open(ctx context.Context, log *zap.Logger, driverName, connstr string) (*DB, error)

Open opens a connection to metabase.

func (*DB) BeginObjectExactVersion 

func (db *DB) BeginObjectExactVersion(ctx context.Context, opts BeginObjectExactVersion) (committed Object, err error)

BeginObjectExactVersion adds a pending object to the database, with specific version.

func (*DB) BeginObjectNextVersion 

func (db *DB) BeginObjectNextVersion(ctx context.Context, opts BeginObjectNextVersion) (committed Version, err error)

BeginObjectNextVersion adds a pending object to the database, with automatically assigned version.

func (*DB) BeginSegment 

func (db *DB) BeginSegment(ctx context.Context, opts BeginSegment) (err error)

BeginSegment verifies, whether a new segment upload can be started.

func (*DB) BucketEmpty 

func (db *DB) BucketEmpty(ctx context.Context, opts BucketEmpty) (empty bool, err error)

BucketEmpty returns true if bucket does not contain objects (pending or committed). This method doesn't check bucket existence.

func (*DB) CheckVersion 

func (db *DB) CheckVersion(ctx context.Context) error

CheckVersion checks the database is the correct version.

func (*DB) Close 

func (db *DB) Close() error

Close closes the connection to database.

func (*DB) CommitInlineSegment 

func (db *DB) CommitInlineSegment(ctx context.Context, opts CommitInlineSegment) (err error)

CommitInlineSegment commits inline segment to the database.

func (*DB) CommitObject 

func (db *DB) CommitObject(ctx context.Context, opts CommitObject) (object Object, err error)

CommitObject adds a pending object to the database.

func (*DB) CommitObjectWithSegments 

func (db *DB) CommitObjectWithSegments(ctx context.Context, opts CommitObjectWithSegments) (object Object, deletedSegments []DeletedSegmentInfo, err error)

CommitObjectWithSegments commits pending object to the database.

func (*DB) CommitSegment 

func (db *DB) CommitSegment(ctx context.Context, opts CommitSegment) (err error)

CommitSegment commits segment to the database.

func (*DB) DeleteBucketObjects 

func (db *DB) DeleteBucketObjects(ctx context.Context, opts DeleteBucketObjects) (deletedObjectCount int64, err error)

DeleteBucketObjects deletes all objects in the specified bucket.

func (*DB) DeleteExpiredObjects 

func (db *DB) DeleteExpiredObjects(ctx context.Context, opts DeleteExpiredObjects) (err error)

DeleteExpiredObjects deletes all objects that expired before expiredBefore.

func (*DB) DeleteObjectAnyStatusAllVersions 

func (db *DB) DeleteObjectAnyStatusAllVersions(ctx context.Context, opts DeleteObjectAnyStatusAllVersions) (result DeleteObjectResult, err error)

DeleteObjectAnyStatusAllVersions deletes all object versions.

func (*DB) DeleteObjectExactVersion 

func (db *DB) DeleteObjectExactVersion(ctx context.Context, opts DeleteObjectExactVersion) (result DeleteObjectResult, err error)

DeleteObjectExactVersion deletes an exact object version.

func (*DB) DeleteObjectLatestVersion 

func (db *DB) DeleteObjectLatestVersion(ctx context.Context, opts DeleteObjectLatestVersion) (result DeleteObjectResult, err error)

DeleteObjectLatestVersion deletes latest object version.

func (*DB) DeleteObjectsAllVersions 

func (db *DB) DeleteObjectsAllVersions(ctx context.Context, opts DeleteObjectsAllVersions) (result DeleteObjectResult, err error)

DeleteObjectsAllVersions deletes all versions of multiple objects from the same bucket.

func (*DB) DeletePendingObject 

func (db *DB) DeletePendingObject(ctx context.Context, opts DeletePendingObject) (result DeleteObjectResult, err error)

DeletePendingObject deletes a pending object with specified version and streamID.

func (*DB) DestroyTables 

func (db *DB) DestroyTables(ctx context.Context) error

DestroyTables deletes all tables.

TODO: remove this, only for bootstrapping.

func (*DB) EnsureNodeAliases 

func (db *DB) EnsureNodeAliases(ctx context.Context, opts EnsureNodeAliases) (err error)

EnsureNodeAliases ensures that the supplied node ID-s have a alias. It's safe to concurrently try and create node ID-s for the same NodeID.

func (*DB) GetLatestObjectLastSegment 

func (db *DB) GetLatestObjectLastSegment(ctx context.Context, opts GetLatestObjectLastSegment) (segment Segment, err error)

GetLatestObjectLastSegment returns an object last segment information.

func (*DB) GetObjectExactVersion 

func (db *DB) GetObjectExactVersion(ctx context.Context, opts GetObjectExactVersion) (_ Object, err error)

GetObjectExactVersion returns object information for exact version.

func (*DB) GetObjectLatestVersion 

func (db *DB) GetObjectLatestVersion(ctx context.Context, opts GetObjectLatestVersion) (_ Object, err error)

GetObjectLatestVersion returns object information for latest version.

func (*DB) GetSegmentByLocation 

func (db *DB) GetSegmentByLocation(ctx context.Context, opts GetSegmentByLocation) (segment Segment, err error)

GetSegmentByLocation returns information about segment on the specified location.

func (*DB) GetSegmentByOffset 

func (db *DB) GetSegmentByOffset(ctx context.Context, opts GetSegmentByOffset) (segment Segment, err error)

GetSegmentByOffset returns an object segment information.

func (*DB) GetSegmentByPosition 

func (db *DB) GetSegmentByPosition(ctx context.Context, opts GetSegmentByPosition) (segment Segment, err error)

GetSegmentByPosition returns information about segment on the specified position.

func (*DB) GetStreamPieceCountByNodeID 

func (db *DB) GetStreamPieceCountByNodeID(ctx context.Context, opts GetStreamPieceCountByNodeID) (result map[storj.NodeID]int64, err error)

GetStreamPieceCountByNodeID returns piece count by node id.

func (*DB) InternalImplementation 

func (db *DB) InternalImplementation() interface{}

InternalImplementation returns *metabase.DB. TODO: remove.

func (*DB) IterateLoopObjects 

func (db *DB) IterateLoopObjects(ctx context.Context, opts IterateLoopObjects, fn func(context.Context, LoopObjectsIterator) error) (err error)

IterateLoopObjects iterates through all objects in metabase.

func (*DB) IterateLoopStreams 

func (db *DB) IterateLoopStreams(ctx context.Context, opts IterateLoopStreams, handleStream func(ctx context.Context, streamID uuid.UUID, next SegmentIterator) error) (err error)

IterateLoopStreams lists multiple streams segments.

func (*DB) IterateObjectsAllVersions 

func (db *DB) IterateObjectsAllVersions(ctx context.Context, opts IterateObjects, fn func(context.Context, ObjectsIterator) error) (err error)

IterateObjectsAllVersions iterates through all versions of all objects.

func (*DB) IterateObjectsAllVersionsWithStatus 

func (db *DB) IterateObjectsAllVersionsWithStatus(ctx context.Context, opts IterateObjectsWithStatus, fn func(context.Context, ObjectsIterator) error) (err error)

IterateObjectsAllVersionsWithStatus iterates through all versions of all objects with specified status.

func (*DB) IteratePendingObjectsByKey 

func (db *DB) IteratePendingObjectsByKey(ctx context.Context, opts IteratePendingObjectsByKey, fn func(context.Context, ObjectsIterator) error) (err error)

IteratePendingObjectsByKey iterates through all streams of pending objects with the same ObjectKey.

func (*DB) ListNodeAliases 

func (db *DB) ListNodeAliases(ctx context.Context) (_ []NodeAliasEntry, err error)

ListNodeAliases lists all node alias mappings.

func (*DB) ListSegments 

func (db *DB) ListSegments(ctx context.Context, opts ListSegments) (result ListSegmentsResult, err error)

ListSegments lists specified stream segments.

func (*DB) ListStreamPositions 

func (db *DB) ListStreamPositions(ctx context.Context, opts ListStreamPositions) (result ListStreamPositionsResult, err error)

ListStreamPositions lists specified stream segment positions.

func (*DB) MigrateToLatest 

func (db *DB) MigrateToLatest(ctx context.Context) error

MigrateToLatest migrates database to the latest version.

func (*DB) Ping 

func (db *DB) Ping(ctx context.Context) error

Ping checks whether connection has been established.

func (*DB) PostgresMigration 

func (db *DB) PostgresMigration() *migrate.Migration

PostgresMigration returns steps needed for migrating postgres database.

func (*DB) TestingAllCommittedObjects 

func (db *DB) TestingAllCommittedObjects(ctx context.Context, projectID uuid.UUID, bucketName string) (objects []ObjectEntry, err error)

TestingAllCommittedObjects gets all objects from bucket. Use only for testing purposes.

func (*DB) TestingAllObjectSegments 

func (db *DB) TestingAllObjectSegments(ctx context.Context, objectLocation ObjectLocation) (segments []Segment, err error)

TestingAllObjectSegments gets all segments for given object. Use only for testing purposes.

func (*DB) TestingAllObjects 

func (db *DB) TestingAllObjects(ctx context.Context) (objects []Object, err error)

TestingAllObjects gets all objects. Use only for testing purposes.

func (*DB) TestingAllPendingObjects 

func (db *DB) TestingAllPendingObjects(ctx context.Context, projectID uuid.UUID, bucketName string) (objects []ObjectEntry, err error)

TestingAllPendingObjects gets all objects from bucket. Use only for testing purposes.

func (*DB) TestingAllSegments 

func (db *DB) TestingAllSegments(ctx context.Context) (segments []Segment, err error)

TestingAllSegments gets all segments. Use only for testing purposes.

func (*DB) TestingDeleteAll 

func (db *DB) TestingDeleteAll(ctx context.Context) (err error)

TestingDeleteAll deletes all objects and segments from the database.

func (*DB) TestingGetState 

func (db *DB) TestingGetState(ctx context.Context) (_ *RawState, err error)

TestingGetState returns the state of the database.

func (*DB) UnderlyingTagSQL 

func (db *DB) UnderlyingTagSQL() tagsql.DB

UnderlyingTagSQL returns *tagsql.DB. TODO: remove.

func (*DB) UpdateObjectMetadata 

func (db *DB) UpdateObjectMetadata(ctx context.Context, opts UpdateObjectMetadata) (err error)

UpdateObjectMetadata updates an object metadata.

func (*DB) UpdateSegmentPieces 

func (db *DB) UpdateSegmentPieces(ctx context.Context, opts UpdateSegmentPieces) (err error)

UpdateSegmentPieces updates pieces for specified segment. If provided old pieces won't match current database state update will fail.

type DeleteBucketObjects 

type DeleteBucketObjects struct {
	Bucket    BucketLocation
	BatchSize int

	// DeletePieces is called for every batch of objects.
	// Slice `segments` will be reused between calls.
	DeletePieces func(ctx context.Context, segments []DeletedSegmentInfo) error
}

DeleteBucketObjects contains arguments for deleting a whole bucket.

type DeleteExpiredObjects 

type DeleteExpiredObjects struct {
	ExpiredBefore  time.Time
	AsOfSystemTime time.Time
	BatchSize      int
}

DeleteExpiredObjects contains all the information necessary to delete expired objects and segments.

type DeleteObjectAnyStatusAllVersions 

type DeleteObjectAnyStatusAllVersions struct {
	ObjectLocation
}

DeleteObjectAnyStatusAllVersions contains arguments necessary for deleting all object versions.

type DeleteObjectExactVersion 

type DeleteObjectExactVersion struct {
	Version Version
	ObjectLocation
}

DeleteObjectExactVersion contains arguments necessary for deleting an exact version of object.

func (*DeleteObjectExactVersion) Verify 

func (obj *DeleteObjectExactVersion) Verify() error

Verify delete object fields.

type DeleteObjectLatestVersion 

type DeleteObjectLatestVersion struct {
	ObjectLocation
}

DeleteObjectLatestVersion contains arguments necessary for deleting latest object version.

type DeleteObjectResult 

type DeleteObjectResult struct {
	Objects  []Object
	Segments []DeletedSegmentInfo
}

DeleteObjectResult result of deleting object.

type DeleteObjectsAllVersions 

type DeleteObjectsAllVersions struct {
	Locations []ObjectLocation
}

DeleteObjectsAllVersions contains arguments necessary for deleting all versions of multiple objects from the same bucket.

func (*DeleteObjectsAllVersions) Verify 

func (delete *DeleteObjectsAllVersions) Verify() error

Verify delete objects fields.

type DeletePendingObject 

type DeletePendingObject struct {
	ObjectLocation
	Version
	StreamID uuid.UUID
}

DeletePendingObject contains arguments necessary for deleting a pending object.

func (*DeletePendingObject) Verify 

func (opts *DeletePendingObject) Verify() error

Verify verifies delete pending object fields validity.

type DeletedSegmentInfo 

type DeletedSegmentInfo struct {
	RootPieceID storj.PieceID
	Pieces      Pieces
}

DeletedSegmentInfo info about deleted segment.

type EnsureNodeAliases 

type EnsureNodeAliases struct {
	Nodes []storj.NodeID
}

EnsureNodeAliases contains arguments necessary for creating NodeAlias-es.

type GetLatestObjectLastSegment 

type GetLatestObjectLastSegment struct {
	ObjectLocation
}

GetLatestObjectLastSegment contains arguments necessary for fetching a last segment information.

type GetObjectExactVersion 

type GetObjectExactVersion struct {
	Version Version
	ObjectLocation
}

GetObjectExactVersion contains arguments necessary for fetching an information about exact object version.

func (*GetObjectExactVersion) Verify 

func (obj *GetObjectExactVersion) Verify() error

Verify verifies get object reqest fields.

type GetObjectLatestVersion 

type GetObjectLatestVersion struct {
	ObjectLocation
}

GetObjectLatestVersion contains arguments necessary for fetching an object information for latest version.

type GetSegmentByLocation 

type GetSegmentByLocation struct {
	SegmentLocation
}

GetSegmentByLocation contains arguments necessary for fetching a segment on specific segment location.

type GetSegmentByOffset 

type GetSegmentByOffset struct {
	ObjectLocation
	PlainOffset int64
}

GetSegmentByOffset contains arguments necessary for fetching a segment information.

type GetSegmentByPosition 

type GetSegmentByPosition struct {
	StreamID uuid.UUID
	Position SegmentPosition
}

GetSegmentByPosition contains arguments necessary for fetching a segment on specific position.

func (*GetSegmentByPosition) Verify 

func (seg *GetSegmentByPosition) Verify() error

Verify verifies get segment request fields.

type GetStreamPieceCountByNodeID 

type GetStreamPieceCountByNodeID struct {
	StreamID uuid.UUID
}

GetStreamPieceCountByNodeID contains arguments for GetStreamPieceCountByNodeID.

type IterateCursor 

type IterateCursor struct {
	Key     ObjectKey
	Version Version
}

IterateCursor is a cursor used during iteration through objects.

type IterateLoopObjects 

type IterateLoopObjects struct {
	BatchSize int

	AsOfSystemTime time.Time
}

IterateLoopObjects contains arguments necessary for listing objects in metabase.

func (*IterateLoopObjects) Verify 

func (opts *IterateLoopObjects) Verify() error

Verify verifies get object request fields.

type IterateLoopStreams 

type IterateLoopStreams struct {
	StreamIDs []uuid.UUID

	AsOfSystemTime time.Time
}

IterateLoopStreams contains arguments necessary for listing multiple streams segments.

type IterateObjects 

type IterateObjects struct {
	ProjectID  uuid.UUID
	BucketName string
	BatchSize  int
	Prefix     ObjectKey
	Cursor     IterateCursor
}

IterateObjects contains arguments necessary for listing objects in a bucket.

func (*IterateObjects) Verify 

func (opts *IterateObjects) Verify() error

Verify verifies get object request fields.

type IterateObjectsWithStatus 

type IterateObjectsWithStatus struct {
	ProjectID  uuid.UUID
	BucketName string
	Recursive  bool
	BatchSize  int
	Prefix     ObjectKey
	Cursor     IterateCursor
	Status     ObjectStatus
}

IterateObjectsWithStatus contains arguments necessary for listing objects in a bucket.

func (*IterateObjectsWithStatus) Verify 

func (opts *IterateObjectsWithStatus) Verify() error

Verify verifies get object request fields.

type IteratePendingObjectsByKey 

type IteratePendingObjectsByKey struct {
	ObjectLocation
	BatchSize int
	Cursor    StreamIDCursor
}

IteratePendingObjectsByKey contains arguments necessary for listing pending objects by ObjectKey.

func (*IteratePendingObjectsByKey) Verify 

func (opts *IteratePendingObjectsByKey) Verify() error

Verify verifies get object request fields.

type ListSegments 

type ListSegments struct {
	StreamID uuid.UUID
	Cursor   SegmentPosition
	Limit    int
}

ListSegments contains arguments necessary for listing stream segments.

type ListSegmentsResult 

type ListSegmentsResult struct {
	Segments []Segment
	More     bool
}

ListSegmentsResult result of listing segments.

type ListStreamPositions 

type ListStreamPositions struct {
	StreamID uuid.UUID
	Cursor   SegmentPosition
	Limit    int

	Range *StreamRange
}

ListStreamPositions contains arguments necessary for listing stream segments.

type ListStreamPositionsResult 

type ListStreamPositionsResult struct {
	Segments []SegmentPositionInfo
	More     bool
}

ListStreamPositionsResult result of listing segments.

type LoopObjectEntry 

type LoopObjectEntry struct {
	ObjectStream                     // metrics, repair, tally
	CreatedAt             time.Time  // temp used by metabase-createdat-migration
	ExpiresAt             *time.Time // tally
	SegmentCount          int32      // metrics
	EncryptedMetadataSize int        // tally
}

LoopObjectEntry contains information about object needed by metainfo loop.

type LoopObjectsIterator 

type LoopObjectsIterator interface {
	Next(ctx context.Context, item *LoopObjectEntry) bool
}

LoopObjectsIterator iterates over a sequence of LoopObjectEntry items.

type LoopSegmentEntry 

type LoopSegmentEntry struct {
	StreamID      uuid.UUID
	Position      SegmentPosition
	CreatedAt     *time.Time // repair
	RepairedAt    *time.Time // repair
	RootPieceID   storj.PieceID
	EncryptedSize int32 // size of the whole segment (not a piece)
	Redundancy    storj.RedundancyScheme
	Pieces        Pieces
}

LoopSegmentEntry contains information about segment metadata needed by metainfo loop.

func (LoopSegmentEntry) Inline 

func (s LoopSegmentEntry) Inline() bool

Inline returns true if segment is inline.

type NodeAlias 

type NodeAlias int32

NodeAlias is a metabase local alias for NodeID-s to reduce segment table size.

type NodeAliasCache 

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

NodeAliasCache is a write-through cache for looking up node ID and alias mapping.

func NewNodeAliasCache 

func NewNodeAliasCache(db NodeAliasDB) *NodeAliasCache

NewNodeAliasCache creates a new cache using the specified database.

func (*NodeAliasCache) Aliases 

func (cache *NodeAliasCache) Aliases(ctx context.Context, nodes []storj.NodeID) ([]NodeAlias, error)

Aliases returns node aliases corresponding to the node ID-s, adding missing node ID-s to the database when needed.

func (*NodeAliasCache) ConvertAliasesToPieces 

func (cache *NodeAliasCache) ConvertAliasesToPieces(ctx context.Context, aliasPieces AliasPieces) (_ Pieces, err error)

ConvertAliasesToPieces converts alias pieces to pieces.

func (*NodeAliasCache) ConvertPiecesToAliases 

func (cache *NodeAliasCache) ConvertPiecesToAliases(ctx context.Context, pieces Pieces) (_ AliasPieces, err error)

ConvertPiecesToAliases converts pieces to alias pieces.

func (*NodeAliasCache) Nodes 

func (cache *NodeAliasCache) Nodes(ctx context.Context, aliases []NodeAlias) ([]storj.NodeID, error)

Nodes returns node ID-s corresponding to the aliases, refreshing the cache once when an alias is missing. This results in an error when the alias is not in the database.

type NodeAliasDB 

type NodeAliasDB interface {
	EnsureNodeAliases(ctx context.Context, opts EnsureNodeAliases) error
	ListNodeAliases(ctx context.Context) (_ []NodeAliasEntry, err error)
}

NodeAliasDB is an interface for looking up node alises.

type NodeAliasEntry 

type NodeAliasEntry struct {
	ID    storj.NodeID
	Alias NodeAlias
}

NodeAliasEntry is a mapping between NodeID and NodeAlias.

type NodeAliasMap 

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

NodeAliasMap contains bidirectional mapping between node ID and a NodeAlias.

func NewNodeAliasMap 

func NewNodeAliasMap(entries []NodeAliasEntry) *NodeAliasMap

NewNodeAliasMap creates a new alias map from the given entries.

func (*NodeAliasMap) Aliases 

func (m *NodeAliasMap) Aliases(nodes []storj.NodeID) (xs []NodeAlias, missing []storj.NodeID)

Aliases returns alises-s for the given node ID-s and node ID-s that are not in this map.

func (*NodeAliasMap) ContainsAll 

func (m *NodeAliasMap) ContainsAll(nodeIDs []storj.NodeID, nodeAliases []NodeAlias) bool

ContainsAll returns true when the table contains all entries.

func (*NodeAliasMap) Merge 

func (m *NodeAliasMap) Merge(other *NodeAliasMap)

Merge merges the other map into m.

func (*NodeAliasMap) Node 

func (m *NodeAliasMap) Node(alias NodeAlias) (x storj.NodeID, ok bool)

Node returns NodeID for the given alias.

func (*NodeAliasMap) Nodes 

func (m *NodeAliasMap) Nodes(aliases []NodeAlias) (xs []storj.NodeID, missing []NodeAlias)

Nodes returns NodeID-s for the given aliases and aliases that are not in this map.

func (*NodeAliasMap) Size 

func (m *NodeAliasMap) Size() int

Size returns the number of entries in this map.

type Object 

type Object RawObject

Object object metadata. TODO define separated struct.

func (*Object) IsMigrated 

func (obj *Object) IsMigrated() bool

IsMigrated returns whether the object comes from PointerDB. Pointer objects are special that they are missing some information.

  • TotalPlainSize = 0 and FixedSegmentSize = 0.
  • Segment.PlainOffset = 0, Segment.PlainSize = 0

type ObjectEntry 

type ObjectEntry struct {
	IsPrefix bool

	ObjectKey ObjectKey
	Version   Version
	StreamID  uuid.UUID

	CreatedAt time.Time
	ExpiresAt *time.Time

	Status       ObjectStatus
	SegmentCount int32

	EncryptedMetadataNonce        []byte
	EncryptedMetadata             []byte
	EncryptedMetadataEncryptedKey []byte

	TotalPlainSize     int64
	TotalEncryptedSize int64
	FixedSegmentSize   int32

	Encryption storj.EncryptionParameters

	// ZombieDeletionDeadline defines when the pending raw object should be deleted from the database.
	// This is as a safeguard against objects that failed to upload and the client has not indicated
	// whether they want to continue uploading or delete the already uploaded data.
	ZombieDeletionDeadline *time.Time
}

ObjectEntry contains information about an item in a bucket.

type ObjectKey 

type ObjectKey string

ObjectKey is an encrypted object key encoded using Path Component Encoding. It is not ascii safe.

type ObjectLocation 

type ObjectLocation struct {
	ProjectID  uuid.UUID
	BucketName string
	ObjectKey  ObjectKey
}

ObjectLocation is decoded object key information.

func (ObjectLocation) Bucket 

func (obj ObjectLocation) Bucket() BucketLocation

Bucket returns bucket location this object belongs to.

func (ObjectLocation) Verify 

func (obj ObjectLocation) Verify() error

Verify object location fields.

type ObjectStatus 

type ObjectStatus byte

ObjectStatus defines the statuses that the object might be in.

type ObjectStream 

type ObjectStream struct {
	ProjectID  uuid.UUID
	BucketName string
	ObjectKey  ObjectKey
	Version    Version
	StreamID   uuid.UUID
}

ObjectStream uniquely defines an object and stream.

TODO: figure out whether ther's a better name.

func (*ObjectStream) Location 

func (obj *ObjectStream) Location() ObjectLocation

Location returns object location.

func (*ObjectStream) Verify 

func (obj *ObjectStream) Verify() error

Verify object stream fields.

type ObjectsIterator 

type ObjectsIterator interface {
	Next(ctx context.Context, item *ObjectEntry) bool
}

ObjectsIterator iterates over a sequence of ObjectEntry items.

type Piece 

type Piece struct {
	Number      uint16
	StorageNode storj.NodeID
}

Piece defines information for a segment piece.

type Pieces 

type Pieces []Piece

Pieces defines information for pieces.

func (Pieces) Equal 

func (p Pieces) Equal(pieces Pieces) bool

Equal checks if Pieces structures are equal.

func (Pieces) Len 

func (p Pieces) Len() int

Len is the number of pieces.

func (Pieces) Less 

func (p Pieces) Less(i, j int) bool

Less reports whether the piece with index i should sort before the piece with index j.

func (*Pieces) Scan 

func (pieces *Pieces) Scan(value interface{}) error

Scan implements sql.Scanner interface.

func (Pieces) Swap 

func (p Pieces) Swap(i, j int)

Swap swaps the pieces with indexes i and j.

func (Pieces) Value 

func (pieces Pieces) Value() (driver.Value, error)

Value implements sql/driver.Valuer interface.

func (Pieces) Verify 

func (p Pieces) Verify() error

Verify verifies pieces.

type RawObject 

type RawObject struct {
	ObjectStream

	CreatedAt time.Time
	ExpiresAt *time.Time

	Status       ObjectStatus
	SegmentCount int32

	EncryptedMetadataNonce        []byte
	EncryptedMetadata             []byte
	EncryptedMetadataEncryptedKey []byte

	// TotalPlainSize is 0 for a migrated object.
	TotalPlainSize     int64
	TotalEncryptedSize int64
	// FixedSegmentSize is 0 for a migrated object.
	FixedSegmentSize int32

	Encryption storj.EncryptionParameters

	// ZombieDeletionDeadline defines when the pending raw object should be deleted from the database.
	// This is as a safeguard against objects that failed to upload and the client has not indicated
	// whether they want to continue uploading or delete the already uploaded data.
	ZombieDeletionDeadline *time.Time
}

RawObject defines the full object that is stored in the database. It should be rarely used directly.

type RawSegment 

type RawSegment struct {
	StreamID uuid.UUID
	Position SegmentPosition

	CreatedAt  *time.Time // TODO: make it non-nilable after we migrate all existing segments to have creation time
	RepairedAt *time.Time

	RootPieceID       storj.PieceID
	EncryptedKeyNonce []byte
	EncryptedKey      []byte

	EncryptedSize int32 // size of the whole segment (not a piece)
	// PlainSize is 0 for a migrated object.
	PlainSize int32
	// PlainOffset is 0 for a migrated object.
	PlainOffset   int64
	EncryptedETag []byte

	Redundancy storj.RedundancyScheme

	InlineData []byte
	Pieces     Pieces
}

RawSegment defines the full segment that is stored in the database. It should be rarely used directly.

type RawState 

type RawState struct {
	Objects  []RawObject
	Segments []RawSegment
}

RawState contains full state of a table.

type Segment 

type Segment RawSegment

Segment segment metadata. TODO define separated struct.

func (Segment) Inline 

func (s Segment) Inline() bool

Inline returns true if segment is inline.

type SegmentIterator 

type SegmentIterator func(segment *LoopSegmentEntry) bool

SegmentIterator returns the next segment.

type SegmentKey 

type SegmentKey []byte

SegmentKey is an encoded metainfo key. This is used as the key in pointerdb key-value store.

type SegmentLocation 

type SegmentLocation struct {
	ProjectID  uuid.UUID
	BucketName string
	ObjectKey  ObjectKey
	Position   SegmentPosition
}

SegmentLocation is decoded segment key information.

func ParseSegmentKey 

func ParseSegmentKey(encoded SegmentKey) (SegmentLocation, error)

ParseSegmentKey parses an segment key into segment location.

func (SegmentLocation) Bucket 

func (seg SegmentLocation) Bucket() BucketLocation

Bucket returns bucket location this segment belongs to.

func (SegmentLocation) Encode 

func (seg SegmentLocation) Encode() SegmentKey

Encode converts segment location into a segment key.

func (SegmentLocation) Object 

func (seg SegmentLocation) Object() ObjectLocation

Object returns the object location associated with this segment location.

func (SegmentLocation) Verify 

func (seg SegmentLocation) Verify() error

Verify segment location fields.

type SegmentPosition 

type SegmentPosition struct {
	Part  uint32
	Index uint32
}

SegmentPosition is segment part and index combined.

func SegmentPositionFromEncoded 

func SegmentPositionFromEncoded(v uint64) SegmentPosition

SegmentPositionFromEncoded decodes an uint64 into a SegmentPosition.

func (SegmentPosition) Encode 

func (pos SegmentPosition) Encode() uint64

Encode encodes a segment position into an uint64, that can be stored in a database.

func (SegmentPosition) Less 

func (pos SegmentPosition) Less(b SegmentPosition) bool

Less returns whether pos should before b.

func (*SegmentPosition) Scan 

func (params *SegmentPosition) Scan(value interface{}) error

Scan implements sql.Scanner interface.

func (SegmentPosition) Value 

func (params SegmentPosition) Value() (driver.Value, error)

Value implements sql/driver.Valuer interface.

type SegmentPositionInfo 

type SegmentPositionInfo struct {
	Position SegmentPosition
	// PlainSize is 0 for a migrated object.
	PlainSize int32
	// PlainOffset is 0 for a migrated object.
	PlainOffset       int64
	CreatedAt         *time.Time // TODO: make it non-nilable after we migrate all existing segments to have creation time
	EncryptedETag     []byte
	EncryptedKeyNonce []byte
	EncryptedKey      []byte
}

SegmentPositionInfo contains information for segment position.

type StreamIDCursor 

type StreamIDCursor struct {
	StreamID uuid.UUID
}

StreamIDCursor is a cursor used during iteration through streamIDs of a pending object.

type StreamRange 

type StreamRange struct {
	PlainStart int64
	PlainLimit int64 // limit is exclusive
}

StreamRange allows to limit stream positions based on the plain offsets.

type UpdateObjectMetadata 

type UpdateObjectMetadata struct {
	ObjectStream

	EncryptedMetadata             []byte
	EncryptedMetadataNonce        []byte
	EncryptedMetadataEncryptedKey []byte
}

UpdateObjectMetadata contains arguments necessary for updating an object metadata.

type UpdateSegmentPieces 

type UpdateSegmentPieces struct {
	StreamID uuid.UUID
	Position SegmentPosition

	OldPieces Pieces

	NewRedundancy storj.RedundancyScheme
	NewPieces     Pieces

	NewRepairedAt time.Time // sets new time of last segment repair (optional).
}

UpdateSegmentPieces contains arguments necessary for updating segment pieces.

type Version 

type Version int64

Version is used to uniquely identify objects with the same key.

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