data

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 Go to latest Published: Oct 11, 2024 License: Apache-2.0 Imports: 14 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var (
	ErrNotFound = clues.New("not found")
	ErrNoData   = clues.New("no data")
)

Functions

func NewLazyItem 

func NewLazyItem(
	ctx context.Context,
	itemGetter ItemDataGetter,
	itemID string,
	modTime time.Time,
	counter *count.Bus,
	errs *fault.Bus,
) *lazyItem

func NewLazyItemWithInfo 

func NewLazyItemWithInfo(
	ctx context.Context,
	itemGetter ItemDataGetter,
	itemID string,
	modTime time.Time,
	counter *count.Bus,
	errs *fault.Bus,
) *lazyItemWithInfo

func NewPrefetchedItem 

func NewPrefetchedItem(
	reader io.ReadCloser,
	itemID string,
	modTime time.Time,
) (*prefetchedItem, error)

func NewPrefetchedItemWithInfo 

func NewPrefetchedItemWithInfo(
	reader io.ReadCloser,
	itemID string,
	info details.ItemInfo,
) (*prefetchedItemWithInfo, error)

func NewTombstoneCollection 

func NewTombstoneCollection(
	prev path.Path,
	opts control.Options,
	counter *count.Bus,
) *tombstoneCollection

func SortRestoreCollections 

func SortRestoreCollections(rcs []RestoreCollection)

SortRestoreCollections performs an in-place sort on the provided collection.

Types

type BackupCollection 

type BackupCollection interface {
	Collection
	// PreviousPath returns the path.Path this collection used to reside at
	// (according to the M365 ID for the container) if the collection was moved or
	// renamed. Returns nil if the collection is new.
	PreviousPath() path.Path
	// State represents changes to the Collection compared to the last backup
	// involving the Collection. State changes are based on the M365 ID of the
	// Collection, not just the path the collection resides at. Collections that
	// are in the same location as they were in the previous backup should be
	// marked as NotMovedState. Renaming or reparenting the Collection counts as
	// Moved. Collections marked as Deleted will be removed from the current
	// backup along with all items and Collections below them in the hierarchy
	// unless said items/Collections were moved.
	State() CollectionState
	// DoNotMergeItems informs kopia that the collection is rebuilding its contents
	// from scratch, and that any items currently stored at the previousPath should
	// be skipped during the process of merging historical data into the new backup.
	// This flag is normally expected to be false.  It should only be flagged under
	// specific circumstances.  Example: if the link token used for incremental queries
	// expires or otherwise becomes unusable, thus requiring the backup producer to
	// re-discover all data in the container.  This flag only affects the path of the
	// collection, and does not cascade to subfolders.
	DoNotMergeItems() bool
}

BackupCollection is an extension of Collection that is used during backups.

type BaseCollection 

type BaseCollection struct {
	Counter *count.Bus
	// contains filtered or unexported fields
}

BaseCollection contains basic functionality like returning path, location, and state information. It can be embedded in other implementations to provide this functionality.

Functionality like how items are fetched is left to the embedding struct.

func NewBaseCollection 

func NewBaseCollection(
	curr, prev path.Path,
	location *path.Builder,
	ctrlOpts control.Options,
	doNotMergeItems bool,
	counter *count.Bus,
) BaseCollection

func (BaseCollection) Category 

func (col BaseCollection) Category() path.CategoryType

func (BaseCollection) DoNotMergeItems 

func (col BaseCollection) DoNotMergeItems() bool

func (*BaseCollection) FullPath 

func (col *BaseCollection) FullPath() path.Path

FullPath returns the BaseCollection's fullPath []string

func (*BaseCollection) LocationPath 

func (col *BaseCollection) LocationPath() *path.Builder

LocationPath produces the BaseCollection's full path, but with display names instead of IDs in the folders. Only populated for Calendars.

func (BaseCollection) Opts 

func (col BaseCollection) Opts() control.Options

func (BaseCollection) PreviousPath 

func (col BaseCollection) PreviousPath() path.Path

func (BaseCollection) State 

func (col BaseCollection) State() CollectionState

type Collection 

type Collection interface {
	// Items returns a channel from which items in the collection can be read.
	// Each returned struct contains the next item in the collection
	// The channel is closed when there are no more items in the collection or if
	// an unrecoverable error caused an early termination in the sender.
	Items(ctx context.Context, errs *fault.Bus) <-chan Item
	// FullPath returns a path struct that acts as a metadata tag for this
	// Collection.
	FullPath() path.Path
}

A Collection represents the set of data within a single logical location denoted by FullPath.

type CollectionState 

type CollectionState int
const (
	NewState      CollectionState = 0
	NotMovedState CollectionState = 1
	MovedState    CollectionState = 2
	DeletedState  CollectionState = 3
)

func StateOf 

func StateOf(
	prev, curr path.Path,
	counter *count.Bus,
) CollectionState

StateOf lets us figure out the state of the collection from the previous and current path

func (CollectionState) String 

func (cs CollectionState) String() string

type CollectionStats 

type CollectionStats struct {
	Folders,
	Objects,
	Successes int
	Bytes   int64
	Details string
}

func (CollectionStats) IsZero 

func (cs CollectionStats) IsZero() bool

func (CollectionStats) String 

func (cs CollectionStats) String() string

type FetchItemByNamer 

type FetchItemByNamer interface {
	// Fetch retrieves an item with the given name from the Collection if it
	// exists. Items retrieved with Fetch may still appear in the channel returned
	// by Items().
	FetchItemByName(ctx context.Context, name string) (Item, error)
}

type FetchRestoreCollection 

type FetchRestoreCollection struct {
	Collection
	FetchItemByNamer
}

type Item 

type Item interface {
	// ToReader returns an io.Reader with the item's data
	ToReader() io.ReadCloser
	// ID provides a unique identifier for this item
	ID() string
	// Deleted returns true if the item represented by this Stream has been
	// deleted and should be removed from the current in-progress backup.
	Deleted() bool
}

Item represents a single item within a Collection

func NewDeletedItem 

func NewDeletedItem(itemID string) Item

type ItemDataGetter 

type ItemDataGetter interface {
	GetData(
		context.Context,
		*fault.Bus,
	) (io.ReadCloser, *details.ItemInfo, bool, error)
}

type ItemInfo 

type ItemInfo interface {
	Info() (details.ItemInfo, error)
}

ItemInfo returns the details.ItemInfo for the item.

type ItemModTime 

type ItemModTime interface {
	ModTime() time.Time
}

ItemModTime provides the last modified time of the item.

If an item implements ItemModTime and ItemInfo it should return the same value here as in item.Info().Modified().

type ItemSize 

type ItemSize interface {
	Size() int64
}

ItemSize returns the size of the item in bytes.

type LocationPather 

type LocationPather interface {
	LocationPath() *path.Builder
}

LocationPather provides a LocationPath describing the path with Display Names instead of canonical IDs

type NoFetchRestoreCollection 

type NoFetchRestoreCollection struct {
	Collection
}

NoFetchRestoreCollection is a wrapper for a Collection that returns ErrNotFound for all Fetch calls.

func (NoFetchRestoreCollection) FetchItemByName 

func (c NoFetchRestoreCollection) FetchItemByName(context.Context, string) (Item, error)

type PreviousLocationPather 

type PreviousLocationPather interface {
	LocationPather
	PreviousLocationPath() details.LocationIDer
}

PreviousLocationPather provides both the current location of the collection as well as the location of the item in the previous backup.

TODO(ashmrtn): If we guarantee that we persist the location of collections in addition to the path of the item then we could just have a single *LocationPather interface with current and previous location functions.

type RestoreCollection 

type RestoreCollection interface {
	Collection
	FetchItemByNamer
}

RestoreCollection is an extension of Collection that is used during restores.

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