metadata

Documentation

Index

• Constants
• Variables
• func ReadMarker(ctx context.Context, logger log.Logger, bkt objstore.InstrumentedBucketReader, ...) error
• type DeletionMark
• type File
• type Marker
• type Meta
  • func InjectThanos(logger log.Logger, bdir string, meta Thanos, downsampledMeta *tsdb.BlockMeta) (*Meta, error)
  • func Read(dir string) (*Meta, error)
  • func (m Meta) Write(w io.Writer) error
  • func (m Meta) WriteToDir(logger log.Logger, dir string) error
• type NoCompactMark
• type NoCompactReason
• type SourceType
• type Thanos
• type ThanosDownsample

Constants

const (
	// DeletionMarkFilename is the known json filename for optional file storing details about when block is marked for deletion.
	// If such file is present in block dir, it means the block is meant to be deleted after certain delay.
	DeletionMarkFilename = "deletion-mark.json"
	// NoCompactMarkFilename is the known json filename for optional file storing details about why block has to be excluded from compaction.
	// If such file is present in block dir, it means the block has to excluded from compaction (both vertical and horizontal) or rewrite (e.g deletions).
	NoCompactMarkFilename = "no-compact-mark.json"

	// DeletionMarkVersion1 is the version of deletion-mark file supported by Thanos.
	DeletionMarkVersion1 = 1
	// NoCompactMarkVersion1 is the version of no-compact-mark file supported by Thanos.
	NoCompactMarkVersion1 = 1
)

const (
	// MetaFilename is the known JSON filename for meta information.
	MetaFilename = "meta.json"
	// TSDBVersion1 is a enumeration of TSDB meta versions supported by Thanos.
	TSDBVersion1 = 1
	// ThanosVersion1 is a enumeration of Thanos section of TSDB meta supported by Thanos.
	ThanosVersion1 = 1
)

Variables

var (
	// ErrorMarkerNotFound is the error when marker file is not found.
	ErrorMarkerNotFound = errors.New("marker not found")
	// ErrorUnmarshalMarker is the error when unmarshalling marker JSON file.
	// This error can occur because marker has been partially uploaded to block storage
	// or the marker file is not a valid json file.
	ErrorUnmarshalMarker = errors.New("unmarshal marker JSON")
)

Functions

func ReadMarker

func ReadMarker(ctx context.Context, logger log.Logger, bkt objstore.InstrumentedBucketReader, dir string, marker Marker) error

ReadMarker reads the given mark file from <dir>/<marker filename>.json in bucket.

Types

type DeletionMark

type DeletionMark struct {
	// ID of the tsdb block.
	ID ulid.ULID `json:"id"`
	// Version of the file.
	Version int `json:"version"`
	// Details is a human readable string giving details of reason.
	Details string `json:"details,omitempty"`

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

DeletionMark stores block id and when block was marked for deletion.

type File

type File struct {
	RelPath string `json:"rel_path"`
	// SizeBytes is optional (e.g meta.json does not show size).
	SizeBytes int64 `json:"size_bytes,omitempty"`
}

type Marker

type Marker interface {
	// contains filtered or unexported methods
}

type Meta

type Meta struct {
	tsdb.BlockMeta

	Thanos Thanos `json:"thanos"`
}

Meta describes the a block's meta. It wraps the known TSDB meta structure and extends it by Thanos-specific fields.

func InjectThanos

func InjectThanos(logger log.Logger, bdir string, meta Thanos, downsampledMeta *tsdb.BlockMeta) (*Meta, error)

InjectThanos sets Thanos meta to the block meta JSON and saves it to the disk. NOTE: It should be used after writing any block by any Thanos component, otherwise we will miss crucial metadata.

func Read

func Read(dir string) (*Meta, error)

Read reads the given meta from <dir>/meta.json.

func (Meta) Write

func (m Meta) Write(w io.Writer) error

Write writes the given encoded meta to writer.

func (Meta) WriteToDir

func (m Meta) WriteToDir(logger log.Logger, dir string) error

WriteToDir writes the encoded meta into <dir>/meta.json.

type NoCompactMark

type NoCompactMark struct {
	// ID of the tsdb block.
	ID ulid.ULID `json:"id"`
	// Version of the file.
	Version int `json:"version"`
	// Details is a human readable string giving details of reason.
	Details string `json:"details,omitempty"`

	// NoCompactTime is a unix timestamp of when the block was marked for no compact.
	NoCompactTime int64           `json:"no_compact_time"`
	Reason        NoCompactReason `json:"reason"`
}

NoCompactMark marker stores reason of block being excluded from compaction if needed.

type NoCompactReason

type NoCompactReason string

NoCompactReason is a reason for a block to be excluded from compaction.

const (
	// ManualNoCompactReason is a custom reason of excluding from compaction that should be added when no-compact mark is added for unknown/user specified reason.
	ManualNoCompactReason NoCompactReason = "manual"
	// IndexSizeExceedingNoCompactReason is a reason of index being too big (for example exceeding 64GB limit: https://github.com/thanos-io/thanos/issues/1424)
	// This reason can be ignored when vertical block sharding will be implemented.
	IndexSizeExceedingNoCompactReason = "index-size-exceeding"
)

type SourceType

type SourceType string

const (
	UnknownSource         SourceType = ""
	SidecarSource         SourceType = "sidecar"
	ReceiveSource         SourceType = "receive"
	CompactorSource       SourceType = "compactor"
	CompactorRepairSource SourceType = "compactor.repair"
	RulerSource           SourceType = "ruler"
	BucketRepairSource    SourceType = "bucket.repair"
	TestSource            SourceType = "test"
)

type Thanos

type Thanos struct {
	// Version of Thanos meta file. If none specified, 1 is assumed (since first version did not have explicit version specified).
	Version int `json:"version,omitempty"`

	Labels     map[string]string `json:"labels"`
	Downsample ThanosDownsample  `json:"downsample"`

	// Source is a real upload source of the block.
	Source SourceType `json:"source"`

	// List of segment files (in chunks directory), in sorted order. Optional.
	// Deprecated. Use Files instead.
	SegmentFiles []string `json:"segment_files,omitempty"`

	// File is a sorted (by rel path) list of all files in block directory of this block known to TSDB.
	// Sorted by relative path.
	// Useful to avoid API call to get size of each file, as well as for debugging purposes.
	// Optional, added in v0.17.0.
	Files []File `json:"files,omitempty"`
}

Thanos holds block meta information specific to Thanos.

type ThanosDownsample

type ThanosDownsample struct {
	Resolution int64 `json:"resolution"`
}