bucketindex

Documentation

Index

• Constants
• Variables
• func BlockDeletionMarkFilepath(blockID ulid.ULID) string
• func BucketWithGlobalMarkers(b objstore.Bucket) objstore.Bucket
• func DeleteIndex(ctx context.Context, bkt objstore.Bucket, userID string, ...) error
• func IsBlockDeletionMarkFilename(name string) (ulid.ULID, bool)
• func MigrateBlockDeletionMarksToGlobalLocation(ctx context.Context, bkt objstore.Bucket, userID string, ...) error
• func WriteIndex(ctx context.Context, bkt objstore.Bucket, userID string, ...) error
• type Block
  • func BlockFromThanosMeta(meta metadata.Meta) *Block
  • func (m *Block) GetUploadedAt() time.Time
  • func (m *Block) String() string
  • func (m *Block) ThanosMeta(userID string) *metadata.Meta
  • func (m *Block) Within(minT, maxT int64) bool
• type BlockDeletionMark
  • func BlockDeletionMarkFromThanosMarker(mark *metadata.DeletionMark) *BlockDeletionMark
  • func (m *BlockDeletionMark) GetDeletionTime() time.Time
  • func (m *BlockDeletionMark) ThanosDeletionMark() *metadata.DeletionMark
• type BlockDeletionMarks
  • func (s BlockDeletionMarks) Clone() BlockDeletionMarks
  • func (s BlockDeletionMarks) GetULIDs() []ulid.ULID
• type Blocks
  • func (s Blocks) GetULIDs() []ulid.ULID
  • func (s Blocks) String() string
• type Index
  • func ReadIndex(ctx context.Context, bkt objstore.Bucket, userID string, ...) (*Index, error)
  • func (idx *Index) GetUpdatedAt() time.Time
  • func (idx *Index) RemoveBlock(id ulid.ULID)
• type Loader
  • func NewLoader(cfg LoaderConfig, bucketClient objstore.Bucket, ...) *Loader
  • func (l *Loader) GetIndex(ctx context.Context, userID string) (*Index, error)
• type LoaderConfig
• type Updater
  • func NewUpdater(bkt objstore.Bucket, userID string, cfgProvider bucket.TenantConfigProvider, ...) *Updater
  • func (w *Updater) UpdateIndex(ctx context.Context, old *Index) (*Index, map[ulid.ULID]error, error)

Constants

const (
	IndexFilename           = "bucket-index.json"
	IndexCompressedFilename = IndexFilename + ".gz"
	IndexVersion1           = 1

	SegmentsFormatUnknown = ""

	// SegmentsFormat1Based6Digits defined segments numbered with 6 digits numbers in a sequence starting from number 1
	// eg. (000001, 000002, 000003).
	SegmentsFormat1Based6Digits = "1b6d"
)

const (
	MarkersPathname = "markers"
)

Variables

var (
	ErrIndexNotFound  = errors.New("bucket index not found")
	ErrIndexCorrupted = errors.New("bucket index corrupted")
)

var (
	ErrBlockMetaNotFound          = block.ErrorSyncMetaNotFound
	ErrBlockMetaCorrupted         = block.ErrorSyncMetaCorrupted
	ErrBlockDeletionMarkNotFound  = errors.New("block deletion mark not found")
	ErrBlockDeletionMarkCorrupted = errors.New("block deletion mark corrupted")
)

Functions

func BlockDeletionMarkFilepath

func BlockDeletionMarkFilepath(blockID ulid.ULID) string

BlockDeletionMarkFilepath returns the path, relative to the tenant's bucket location, of a block deletion mark in the bucket markers location.

func BucketWithGlobalMarkers

func BucketWithGlobalMarkers(b objstore.Bucket) objstore.Bucket

BucketWithGlobalMarkers wraps the input bucket into a bucket which also keeps track of markers in the global markers location.

func DeleteIndex

func DeleteIndex(ctx context.Context, bkt objstore.Bucket, userID string, cfgProvider bucket.TenantConfigProvider) error

DeleteIndex deletes the bucket index from the storage. No error is returned if the index does not exist.

func IsBlockDeletionMarkFilename

func IsBlockDeletionMarkFilename(name string) (ulid.ULID, bool)

IsBlockDeletionMarkFilename returns whether the input filename matches the expected pattern of block deletion markers stored in the markers location.

func MigrateBlockDeletionMarksToGlobalLocation

func MigrateBlockDeletionMarksToGlobalLocation(ctx context.Context, bkt objstore.Bucket, userID string, cfgProvider bucket.TenantConfigProvider) error

MigrateBlockDeletionMarksToGlobalLocation list all tenant's blocks and, for each of them, look for a deletion mark in the block location. Found deletion marks are copied to the global markers location. The migration continues on error and returns once all blocks have been checked.

func WriteIndex

func WriteIndex(ctx context.Context, bkt objstore.Bucket, userID string, cfgProvider bucket.TenantConfigProvider, idx *Index) error

WriteIndex uploads the provided index to the storage.

Types

type Block

type Block struct {
	// Block ID.
	ID ulid.ULID `json:"block_id"`

	// MinTime and MaxTime specify the time range all samples in the block are in (millis precision).
	MinTime int64 `json:"min_time"`
	MaxTime int64 `json:"max_time"`

	// SegmentsFormat and SegmentsNum stores the format and number of chunks segments
	// in the block, if they match a known pattern. We don't store the full segments
	// files list in order to keep the index small. SegmentsFormat is empty if segments
	// are unknown or don't match a known format.
	SegmentsFormat string `json:"segments_format,omitempty"`
	SegmentsNum    int    `json:"segments_num,omitempty"`

	// UploadedAt is a unix timestamp (seconds precision) of when the block has been completed to be uploaded
	// to the storage.
	UploadedAt int64 `json:"uploaded_at"`
}

Block holds the information about a block in the index.

func BlockFromThanosMeta

func BlockFromThanosMeta(meta metadata.Meta) *Block

func (*Block) GetUploadedAt

func (m *Block) GetUploadedAt() time.Time

func (*Block) String

func (m *Block) String() string

func (*Block) ThanosMeta

func (m *Block) ThanosMeta(userID string) *metadata.Meta

ThanosMeta returns a block meta based on the known information in the index. The returned meta doesn't include all original meta.json data but only a subset of it.

func (*Block) Within

func (m *Block) Within(minT, maxT int64) bool

Within returns whether the block contains samples within the provided range. Input minT and maxT are both inclusive.

type BlockDeletionMark

type BlockDeletionMark struct {
	// Block ID.
	ID ulid.ULID `json:"block_id"`

	// DeletionTime is a unix timestamp (seconds precision) of when the block was marked to be deleted.
	DeletionTime int64 `json:"deletion_time"`
}

BlockDeletionMark holds the information about a block's deletion mark in the index.

func BlockDeletionMarkFromThanosMarker

func BlockDeletionMarkFromThanosMarker(mark *metadata.DeletionMark) *BlockDeletionMark

func (*BlockDeletionMark) GetDeletionTime

func (m *BlockDeletionMark) GetDeletionTime() time.Time

func (*BlockDeletionMark) ThanosDeletionMark

func (m *BlockDeletionMark) ThanosDeletionMark() *metadata.DeletionMark

ThanosMeta returns the Thanos deletion mark.

type BlockDeletionMarks

type BlockDeletionMarks []*BlockDeletionMark

BlockDeletionMarks holds a set of block deletion marks in the index. No ordering guaranteed.

func (BlockDeletionMarks) Clone

func (s BlockDeletionMarks) Clone() BlockDeletionMarks

func (BlockDeletionMarks) GetULIDs

func (s BlockDeletionMarks) GetULIDs() []ulid.ULID

type Blocks

type Blocks []*Block

Blocks holds a set of blocks in the index. No ordering guaranteed.

func (Blocks) GetULIDs

func (s Blocks) GetULIDs() []ulid.ULID

func (Blocks) String

func (s Blocks) String() string

type Index

type Index struct {
	// Version of the index format.
	Version int `json:"version"`

	// List of complete blocks (partial blocks are excluded from the index).
	Blocks Blocks `json:"blocks"`

	// List of block deletion marks.
	BlockDeletionMarks BlockDeletionMarks `json:"block_deletion_marks"`

	// UpdatedAt is a unix timestamp (seconds precision) of when the index has been updated
	// (written in the storage) the last time.
	UpdatedAt int64 `json:"updated_at"`
}

Index contains all known blocks and markers of a tenant.

func ReadIndex

func ReadIndex(ctx context.Context, bkt objstore.Bucket, userID string, cfgProvider bucket.TenantConfigProvider, logger log.Logger) (*Index, error)

ReadIndex reads, parses and returns a bucket index from the bucket.

func (*Index) GetUpdatedAt

func (idx *Index) GetUpdatedAt() time.Time

func (*Index) RemoveBlock

func (idx *Index) RemoveBlock(id ulid.ULID)

RemoveBlock removes block and its deletion mark (if any) from index.

type Loader

type Loader struct {
	services.Service
	// contains filtered or unexported fields
}

Loader is responsible to lazy load bucket indexes and, once loaded for the first time, keep them updated in background. Loaded indexes are automatically offloaded once the idle timeout expires.

func NewLoader

func NewLoader(cfg LoaderConfig, bucketClient objstore.Bucket, cfgProvider bucket.TenantConfigProvider, logger log.Logger, reg prometheus.Registerer) *Loader

NewLoader makes a new Loader.

func (*Loader) GetIndex

func (l *Loader) GetIndex(ctx context.Context, userID string) (*Index, error)

GetIndex returns the bucket index for the given user. It returns the in-memory cached index if available, or load it from the bucket otherwise.

type LoaderConfig

type LoaderConfig struct {
	CheckInterval         time.Duration
	UpdateOnStaleInterval time.Duration
	UpdateOnErrorInterval time.Duration
	IdleTimeout           time.Duration
}

type Updater

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

Updater is responsible to generate an update in-memory bucket index.

func NewUpdater

func NewUpdater(bkt objstore.Bucket, userID string, cfgProvider bucket.TenantConfigProvider, logger log.Logger) *Updater

func (*Updater) UpdateIndex

func (w *Updater) UpdateIndex(ctx context.Context, old *Index) (*Index, map[ulid.ULID]error, error)

UpdateIndex generates the bucket index and returns it, without storing it to the storage. If the old index is not passed in input, then the bucket index will be generated from scratch.