disk

package
v0.0.0-...-dc2a067 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Sep 21, 2023 License: Apache-2.0 Imports: 29 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	KiB = 1024
	MiB = KiB * 1024
	GiB = MiB * 10240
)
View Source 
const (
	INDEX = iota
	DATA
)
View Source 
const (
	LogMaxSize = 512 * MiB //100 	KB

	DefaultBlockCacheCapacity = 8 * MiB
)

Variables

View Source 
var (
	B  = 1
	KB = 1024 * B
	MB = 1024 * KB
	GB = 1024 * MB
)

Functions

func CloseChain 

func CloseChain(fn ...writeClose) error

func Get 

func Get() []byte

func LastSequenceFile 

func LastSequenceFile(dir string) (string, error)

func NewListPostings 

func NewListPostings(chks []TimeChunk) *chunkSet

func NextSequenceFile 

func NextSequenceFile(dir string) (string, int, error)

func SequenceFiles 

func SequenceFiles(dir string) ([]string, error)

Types

type Builder 

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

func NewBuilder 

func NewBuilder() *Builder

type ChunkMeta 

type ChunkMeta struct {
	Ref        uint64 //Length
	MinT, MaxT int64
	LastLogNum uint64
}

func (ChunkMeta) ChunkEnc 

func (c ChunkMeta) ChunkEnc(isTerm bool, cr chunks.ChunkReader) chunks.ChunkEnc

func (ChunkMeta) MaxTime 

func (c ChunkMeta) MaxTime() int64

func (ChunkMeta) Meta 

func (c ChunkMeta) Meta(ref uint64) ChunkMeta

func (ChunkMeta) MinTime 

func (c ChunkMeta) MinTime() int64

func (ChunkMeta) SegmentNum 

func (c ChunkMeta) SegmentNum() uint64

type ChunkMetaIndex 

type ChunkMetaIndex struct {
	chunks.Chunk
	IterIndex int
}

type DiskLogIterator 

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

func (*DiskLogIterator) Next 

func (t *DiskLogIterator) Next() bool

func (*DiskLogIterator) Value 

func (t *DiskLogIterator) Value() []byte

func (*DiskLogIterator) Write 

func (t *DiskLogIterator) Write(w LogWriter) (uint64, error)

type IndexReader 

type IndexReader struct {
	MsgTagName string
	// contains filtered or unexported fields
}

func NewIndexReader 

func NewIndexReader(dir string, skipListlevel int, bcache, mcache *cache.NamespaceGetter) *IndexReader

缺乏错误处理

func (*IndexReader) ChunkReader 

func (r *IndexReader) ChunkReader() chunks.ChunkReader

func (*IndexReader) Close 

func (r *IndexReader) Close() error

func (*IndexReader) Iterator 

func (r *IndexReader) Iterator() IteratorLabel

func (*IndexReader) MaxDoc 

func (r *IndexReader) MaxDoc() float64

func (*IndexReader) Search 

func (r *IndexReader) Search(lset []*prompb.LabelMatcher, expr temql.Expr) (posting.Postings, []series.Series)

type IndexW 

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

写文件

func CreateIndexFrom 

func CreateIndexFrom(dir string) (*IndexW, error)

func (*IndexW) AddSeries 

func (tw *IndexW) AddSeries(isSeries bool, lset labels.Labels, chunks ...ChunkMeta) (uint64, error)

func (*IndexW) AppendKey 

func (tw *IndexW) AppendKey(key []byte, ref uint64) error

func (*IndexW) Close 

func (tw *IndexW) Close() error

func (*IndexW) FinishTag 

func (tw *IndexW) FinishTag() error

func (*IndexW) GetSeries 

func (tw *IndexW) GetSeries(lset labels.Labels) (uint64, bool)

func (*IndexW) GetValueOffset 

func (tw *IndexW) GetValueOffset() uint64

func (*IndexW) SetBaseTimeStamp 

func (tw *IndexW) SetBaseTimeStamp(timeStamp int64)

func (*IndexW) SetTagName 

func (tw *IndexW) SetTagName(tagName []byte)

func (*IndexW) WriteChunks 

func (tw *IndexW) WriteChunks(b [][]byte) (uint64, error)

func (*IndexW) WritePostings 

func (tw *IndexW) WritePostings(ref ...[]uint64) (uint64, error)

type IndexWriter 

type IndexWriter interface {
	SetTagName([]byte)
	AppendKey([]byte, uint64) error
	Close() error
	FinishTag() error
	AddSeries(bool, labels.Labels, ...ChunkMeta) (uint64, error)
	WritePostings(ref ...[]uint64) (uint64, error)
	WriteChunks([][]byte) (uint64, error)
	GetSeries(labels.Labels) (uint64, bool)
	SetBaseTimeStamp(int64)
}

type IteratorLabel 

type IteratorLabel interface {
	iterator.SingleIterator
	Iter() WriterIterator
}

type LogIterator 

type LogIterator interface {
	Next() bool
	Write(LogWriter) (uint64, error) // []byte
}

type LogReader 

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

func NewLogReader 

func NewLogReader(dir string, logOffset []uint64, lcache *cache.NamespaceGetter) *LogReader

func (*LogReader) Close 

func (cr *LogReader) Close() error

func (*LogReader) Iterator 

func (cr *LogReader) Iterator() LogIterator

func (*LogReader) ReadLog 

func (cr *LogReader) ReadLog(logID uint64) []byte

type LogW 

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

chunk writer

func CreateLogFrom 

func CreateLogFrom(dir string) *LogW

func (*LogW) Close 

func (w *LogW) Close() (uint64, error)

func (*LogW) FinishLog 

func (w *LogW) FinishLog(length uint64) (uint64, error)

func (*LogW) WriteBytes 

func (w *LogW) WriteBytes(b []byte) error

func (*LogW) WriteIndex 

func (w *LogW) WriteIndex() error

type LogWriter 

type LogWriter interface {
	FinishLog(uint64) (uint64, error)
	WriteBytes([]byte) error
	WriteIndex() error
	Close() (uint64, error)
}

type MergeLabelIterator 

type MergeLabelIterator struct {
	MergedIterator
	// contains filtered or unexported fields
}

func NewMergeLabelIterator 

func NewMergeLabelIterator(iters ...IteratorLabel) *MergeLabelIterator

func (*MergeLabelIterator) Iters 

func (t *MergeLabelIterator) Iters() []WriterIterator

返回同一个label的块

type MergeLogIterator 

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

func NewMergeLogIterator 

func NewMergeLogIterator(iters ...LogIterator) *MergeLogIterator

func (*MergeLogIterator) Next 

func (t *MergeLogIterator) Next() bool

func (*MergeLogIterator) Write 

func (t *MergeLogIterator) Write(w LogWriter) (uint64, error)

type MergeWriterIterator 

type MergeWriterIterator struct {
	MergedIterator
	// contains filtered or unexported fields
}

func NewMergeWriterIterator 

func NewMergeWriterIterator(segmentNum []uint64, baseTime []int64, msgTagName string, iters ...WriterIterator) *MergeWriterIterator

func (*MergeWriterIterator) Write 

func (m *MergeWriterIterator) Write(labelName string, w IndexWriter) error

type MergedIterator 

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

多路归并排序

func NewMergedIterator 

func NewMergedIterator(iters ...iterator.SingleIterator) *MergedIterator

func (*MergedIterator) First 

func (m *MergedIterator) First() bool

func (*MergedIterator) Key 

func (m *MergedIterator) Key() []byte

func (*MergedIterator) Next 

func (m *MergedIterator) Next() bool

func (*MergedIterator) Values 

func (m *MergedIterator) Values() [][]byte

type TableOps 

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

磁盘数据

func NewTableOps 

func NewTableOps() *TableOps

func (*TableOps) CreateIndexFrom 

func (d *TableOps) CreateIndexFrom(dir string) (*IndexW, error)

func (*TableOps) CreateIndexReader 

func (t *TableOps) CreateIndexReader(dir string, ulid ulid.ULID, skiplistLevel int) *IndexReader

func (*TableOps) CreateLogFrom 

func (d *TableOps) CreateLogFrom(dir string) *LogW

func (*TableOps) CreateLogReader 

func (t *TableOps) CreateLogReader(dir string, uid ulid.ULID, offset []uint64) *LogReader

func (*TableOps) RemoveIndexReader 

func (t *TableOps) RemoveIndexReader(dir string, ulid ulid.ULID) error

type TimeChunk 

type TimeChunk struct {
	Lset labels.Labels
	Meta []ChunkMetaIndex
}

TimeChunk 时间段

type WriterIterator 

type WriterIterator interface {
	iterator.SingleIterator

	ChunksPosting(w IndexWriter, segmentNum uint64, iterIndex int) ([]TimeChunk, []uint64, error)

	ChunkByte(bool, chunks.Chunk) chunks.ChunkEnc
}

Source Files

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