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vendor: re-vendor storage

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This commit is contained in:
Fabian Reinartz 2017-02-28 09:34:30 +01:00
parent 4397b4d508
commit 097a2c1e59
8 changed files with 332 additions and 210 deletions
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70
vendor/github.com/fabxc/tsdb/block.go generated vendored
View file

@ -7,6 +7,7 @@ import (
"path/filepath"
"sort"
"github.com/oklog/ulid"
"github.com/pkg/errors"
)
@ -22,11 +23,7 @@ type Block interface {
Index() IndexReader
// Series returns a SeriesReader over the block's data.
Series() SeriesReader
// Persisted returns whether the block is already persisted,
// and no longer being appended to.
Persisted() bool
Chunks() ChunkReader
// Close releases all underlying resources of the block.
Close() error
@ -34,6 +31,9 @@ type Block interface {
// BlockMeta provides meta information about a block.
type BlockMeta struct {
// Unique identifier for the block and its contents. Changes on compaction.
ULID ulid.ULID `json:"ulid"`
// Sequence number of the block.
Sequence int `json:"sequence"`
@ -64,9 +64,7 @@ type persistedBlock struct {
dir string
meta BlockMeta
chunksf, indexf *mmapFile
chunkr *seriesReader
chunkr *chunkReader
indexr *indexReader
}
@ -120,58 +118,40 @@ func newPersistedBlock(dir string) (*persistedBlock, error) {
return nil, err
}
chunksf, err := openMmapFile(chunksFileName(dir))
cr, err := newChunkReader(chunkDir(dir))
if err != nil {
return nil, errors.Wrap(err, "open chunk file")
return nil, err
}
indexf, err := openMmapFile(indexFileName(dir))
ir, err := newIndexReader(dir)
if err != nil {
return nil, errors.Wrap(err, "open index file")
}
sr, err := newSeriesReader([][]byte{chunksf.b})
if err != nil {
return nil, errors.Wrap(err, "create series reader")
}
ir, err := newIndexReader(indexf.b)
if err != nil {
return nil, errors.Wrap(err, "create index reader")
return nil, err
}
pb := &persistedBlock{
dir: dir,
meta: *meta,
chunksf: chunksf,
indexf: indexf,
chunkr: sr,
indexr: ir,
dir: dir,
meta: *meta,
chunkr: cr,
indexr: ir,
}
return pb, nil
}
func (pb *persistedBlock) Close() error {
err0 := pb.chunksf.Close()
err1 := pb.indexf.Close()
var merr MultiError
if err0 != nil {
return err0
}
return err1
merr.Add(pb.chunkr.Close())
merr.Add(pb.indexr.Close())
return merr.Err()
}
func (pb *persistedBlock) Dir() string { return pb.dir }
func (pb *persistedBlock) Persisted() bool { return true }
func (pb *persistedBlock) Index() IndexReader { return pb.indexr }
func (pb *persistedBlock) Series() SeriesReader { return pb.chunkr }
func (pb *persistedBlock) Meta() BlockMeta { return pb.meta }
func (pb *persistedBlock) Dir() string { return pb.dir }
func (pb *persistedBlock) Index() IndexReader { return pb.indexr }
func (pb *persistedBlock) Chunks() ChunkReader { return pb.chunkr }
func (pb *persistedBlock) Meta() BlockMeta { return pb.meta }
func chunksFileName(path string) string {
return filepath.Join(path, "chunks-000")
}
func indexFileName(path string) string {
return filepath.Join(path, "index-000")
}
func chunkDir(dir string) string { return filepath.Join(dir, "chunks") }
func walDir(dir string) string { return filepath.Join(dir, "wal") }
type mmapFile struct {
f *os.File

52
vendor/github.com/fabxc/tsdb/compact.go generated vendored
View file

@ -1,12 +1,14 @@
package tsdb
import (
"math/rand"
"os"
"path/filepath"
"time"
"github.com/coreos/etcd/pkg/fileutil"
"github.com/fabxc/tsdb/labels"
"github.com/oklog/ulid"
"github.com/pkg/errors"
"github.com/prometheus/client_golang/prometheus"
)
@ -60,11 +62,12 @@ func newCompactor(r prometheus.Registerer, opts *compactorOptions) *compactor {
}
type compactionInfo struct {
seq int
generation int
mint, maxt int64
}
const compactionBlocksLen = 4
const compactionBlocksLen = 3
// pick returns a range [i, j) in the blocks that are suitable to be compacted
// into a single block at position i.
@ -103,8 +106,8 @@ func (c *compactor) pick(bs []compactionInfo) (i, j int, ok bool) {
}
// Then we care about compacting multiple blocks, starting with the oldest.
for i := 0; i < len(bs)-compactionBlocksLen; i += compactionBlocksLen {
if c.match(bs[i : i+2]) {
for i := 0; i < len(bs)-compactionBlocksLen+1; i += compactionBlocksLen {
if c.match(bs[i : i+3]) {
return i, i + compactionBlocksLen, true
}
}
@ -114,28 +117,24 @@ func (c *compactor) pick(bs []compactionInfo) (i, j int, ok bool) {
func (c *compactor) match(bs []compactionInfo) bool {
g := bs[0].generation
if g >= 5 {
return false
}
for _, b := range bs {
if b.generation == 0 {
continue
}
if b.generation != g {
return false
}
}
return uint64(bs[len(bs)-1].maxt-bs[0].mint) <= c.opts.maxBlockRange
}
var entropy = rand.New(rand.NewSource(time.Now().UnixNano()))
func mergeBlockMetas(blocks ...Block) (res BlockMeta) {
m0 := blocks[0].Meta()
res.Sequence = m0.Sequence
res.MinTime = m0.MinTime
res.MaxTime = blocks[len(blocks)-1].Meta().MaxTime
res.ULID = ulid.MustNew(ulid.Now(), entropy)
g := m0.Compaction.Generation
if g == 0 && len(blocks) > 1 {
@ -166,18 +165,15 @@ func (c *compactor) compact(dir string, blocks ...Block) (err error) {
return err
}
chunkf, err := os.OpenFile(chunksFileName(dir), os.O_WRONLY|os.O_CREATE, 0666)
chunkw, err := newChunkWriter(chunkDir(dir))
if err != nil {
return errors.Wrap(err, "create chunk file")
return errors.Wrap(err, "open chunk writer")
}
indexf, err := os.OpenFile(indexFileName(dir), os.O_WRONLY|os.O_CREATE, 0666)
indexw, err := newIndexWriter(dir)
if err != nil {
return errors.Wrap(err, "create index file")
return errors.Wrap(err, "open index writer")
}
indexw := newIndexWriter(indexf)
chunkw := newChunkWriter(chunkf)
if err = c.write(dir, blocks, indexw, chunkw); err != nil {
return errors.Wrap(err, "write compaction")
}
@ -188,18 +184,6 @@ func (c *compactor) compact(dir string, blocks ...Block) (err error) {
if err = indexw.Close(); err != nil {
return errors.Wrap(err, "close index writer")
}
if err = fileutil.Fsync(chunkf); err != nil {
return errors.Wrap(err, "fsync chunk file")
}
if err = fileutil.Fsync(indexf); err != nil {
return errors.Wrap(err, "fsync index file")
}
if err = chunkf.Close(); err != nil {
return errors.Wrap(err, "close chunk file")
}
if err = indexf.Close(); err != nil {
return errors.Wrap(err, "close index file")
}
return nil
}
@ -215,7 +199,7 @@ func (c *compactor) write(dir string, blocks []Block, indexw IndexWriter, chunkw
if hb, ok := b.(*headBlock); ok {
all = hb.remapPostings(all)
}
s := newCompactionSeriesSet(b.Index(), b.Series(), all)
s := newCompactionSeriesSet(b.Index(), b.Chunks(), all)
if i == 0 {
set = s
@ -300,17 +284,17 @@ type compactionSet interface {
type compactionSeriesSet struct {
p Postings
index IndexReader
series SeriesReader
chunks ChunkReader
l labels.Labels
c []ChunkMeta
err error
}
func newCompactionSeriesSet(i IndexReader, s SeriesReader, p Postings) *compactionSeriesSet {
func newCompactionSeriesSet(i IndexReader, c ChunkReader, p Postings) *compactionSeriesSet {
return &compactionSeriesSet{
index: i,
series: s,
chunks: c,
p: p,
}
}
@ -327,7 +311,7 @@ func (c *compactionSeriesSet) Next() bool {
for i := range c.c {
chk := &c.c[i]
chk.Chunk, c.err = c.series.Chunk(chk.Ref)
chk.Chunk, c.err = c.chunks.Chunk(chk.Ref)
if c.err != nil {
return false
}

39
vendor/github.com/fabxc/tsdb/db.go generated vendored
View file

@ -4,6 +4,7 @@ package tsdb
import (
"bytes"
"fmt"
"io"
"io/ioutil"
"math"
"os"
@ -131,7 +132,7 @@ func newDBMetrics(r prometheus.Registerer) *dbMetrics {
}
// Open returns a new DB in the given directory.
func Open(dir string, logger log.Logger, opts *Options) (db *DB, err error) {
func Open(dir string, l log.Logger, r prometheus.Registerer, opts *Options) (db *DB, err error) {
if err := os.MkdirAll(dir, 0777); err != nil {
return nil, err
}
@ -148,8 +149,10 @@ func Open(dir string, logger log.Logger, opts *Options) (db *DB, err error) {
return nil, errors.Wrapf(err, "open DB in %s", dir)
}
var r prometheus.Registerer
// r := prometheus.DefaultRegisterer
if l == nil {
l = log.NewLogfmtLogger(os.Stdout)
l = log.NewContext(l).With("ts", log.DefaultTimestampUTC, "caller", log.DefaultCaller)
}
if opts == nil {
opts = DefaultOptions
@ -161,7 +164,7 @@ func Open(dir string, logger log.Logger, opts *Options) (db *DB, err error) {
db = &DB{
dir: dir,
lockf: lockf,
logger: logger,
logger: l,
metrics: newDBMetrics(r),
opts: opts,
compactc: make(chan struct{}, 1),
@ -189,6 +192,7 @@ func (db *DB) run() {
case <-db.compactc:
db.metrics.compactionsTriggered.Inc()
var seqs []int
var infos []compactionInfo
for _, b := range db.compactable() {
m := b.Meta()
@ -197,17 +201,16 @@ func (db *DB) run() {
generation: m.Compaction.Generation,
mint: m.MinTime,
maxt: m.MaxTime,
seq: m.Sequence,
})
seqs = append(seqs, m.Sequence)
}
i, j, ok := db.compactor.pick(infos)
if !ok {
continue
}
db.logger.Log("msg", "picked", "i", i, "j", j)
for k := i; k < j; k++ {
db.logger.Log("k", k, "generation", infos[k].generation)
}
db.logger.Log("msg", "compact", "seqs", fmt.Sprintf("%v", seqs[i:j]))
if err := db.compact(i, j); err != nil {
db.logger.Log("msg", "compaction failed", "err", err)
@ -298,11 +301,16 @@ func (db *DB) compact(i, j int) error {
db.persisted = append(db.persisted, pb)
for _, b := range blocks[1:] {
db.logger.Log("msg", "remove old dir", "dir", b.Dir())
if err := os.RemoveAll(b.Dir()); err != nil {
return errors.Wrap(err, "removing old block")
}
}
return db.retentionCutoff()
if err := db.retentionCutoff(); err != nil {
return err
}
return nil
}
func (db *DB) retentionCutoff() error {
@ -726,7 +734,7 @@ func isPowTwo(x int) bool {
}
// OpenPartitioned or create a new DB.
func OpenPartitioned(dir string, n int, l log.Logger, opts *Options) (*PartitionedDB, error) {
func OpenPartitioned(dir string, n int, l log.Logger, r prometheus.Registerer, opts *Options) (*PartitionedDB, error) {
if !isPowTwo(n) {
return nil, errors.Errorf("%d is not a power of two", n)
}
@ -754,7 +762,7 @@ func OpenPartitioned(dir string, n int, l log.Logger, opts *Options) (*Partition
l := log.NewContext(l).With("partition", i)
d := partitionDir(dir, i)
s, err := Open(d, l, opts)
s, err := Open(d, l, r, opts)
if err != nil {
return nil, fmt.Errorf("initializing partition %q failed: %s", d, err)
}
@ -880,3 +888,12 @@ func yoloString(b []byte) string {
}
return *((*string)(unsafe.Pointer(&h)))
}
func closeAll(cs ...io.Closer) error {
var merr MultiError
for _, c := range cs {
merr.Add(c.Close())
}
return merr.Err()
}

33
vendor/github.com/fabxc/tsdb/head.go generated vendored
View file

@ -14,6 +14,7 @@ import (
"github.com/fabxc/tsdb/chunks"
"github.com/fabxc/tsdb/labels"
"github.com/go-kit/kit/log"
"github.com/oklog/ulid"
"github.com/pkg/errors"
)
@ -62,11 +63,16 @@ type headBlock struct {
}
func createHeadBlock(dir string, seq int, l log.Logger, mint, maxt int64) (*headBlock, error) {
if err := os.MkdirAll(dir, 0755); err != nil {
if err := os.MkdirAll(dir, 0777); err != nil {
return nil, err
}
ulid, err := ulid.New(ulid.Now(), entropy)
if err != nil {
return nil, err
}
if err := writeMetaFile(dir, &BlockMeta{
ULID: ulid,
Sequence: seq,
MinTime: mint,
MaxTime: maxt,
@ -133,10 +139,19 @@ func (h *headBlock) inBounds(t int64) bool {
// Close syncs all data and closes underlying resources of the head block.
func (h *headBlock) Close() error {
if err := writeMetaFile(h.dir, &h.meta); err != nil {
if err := h.wal.Close(); err != nil {
return err
}
return h.wal.Close()
// Check whether the head block still exists in the underlying dir
// or has already been replaced with a compacted version
meta, err := readMetaFile(h.dir)
if err != nil {
return err
}
if meta.ULID == h.meta.ULID {
return writeMetaFile(h.dir, &h.meta)
}
return nil
}
func (h *headBlock) Meta() BlockMeta {
@ -146,10 +161,10 @@ func (h *headBlock) Meta() BlockMeta {
return h.meta
}
func (h *headBlock) Dir() string { return h.dir }
func (h *headBlock) Persisted() bool { return false }
func (h *headBlock) Index() IndexReader { return &headIndexReader{h} }
func (h *headBlock) Series() SeriesReader { return &headSeriesReader{h} }
func (h *headBlock) Dir() string { return h.dir }
func (h *headBlock) Persisted() bool { return false }
func (h *headBlock) Index() IndexReader { return &headIndexReader{h} }
func (h *headBlock) Chunks() ChunkReader { return &headChunkReader{h} }
func (h *headBlock) Appender() Appender {
atomic.AddUint64(&h.activeWriters, 1)
@ -359,12 +374,12 @@ func (a *headAppender) Rollback() error {
return nil
}
type headSeriesReader struct {
type headChunkReader struct {
*headBlock
}
// Chunk returns the chunk for the reference number.
func (h *headSeriesReader) Chunk(ref uint64) (chunks.Chunk, error) {
func (h *headChunkReader) Chunk(ref uint64) (chunks.Chunk, error) {
h.mtx.RLock()
defer h.mtx.RUnlock()

12
vendor/github.com/fabxc/tsdb/querier.go generated vendored
View file

@ -59,7 +59,7 @@ func (s *DB) Querier(mint, maxt int64) Querier {
mint: mint,
maxt: maxt,
index: b.Index(),
series: b.Series(),
chunks: b.Chunks(),
}
// TODO(fabxc): find nicer solution.
@ -123,19 +123,19 @@ func (q *querier) Close() error {
// blockQuerier provides querying access to a single block database.
type blockQuerier struct {
index IndexReader
series SeriesReader
chunks ChunkReader
postingsMapper func(Postings) Postings
mint, maxt int64
}
func newBlockQuerier(ix IndexReader, s SeriesReader, mint, maxt int64) *blockQuerier {
func newBlockQuerier(ix IndexReader, c ChunkReader, mint, maxt int64) *blockQuerier {
return &blockQuerier{
mint: mint,
maxt: maxt,
index: ix,
series: s,
chunks: c,
}
}
@ -162,7 +162,7 @@ func (q *blockQuerier) Select(ms ...labels.Matcher) SeriesSet {
return &blockSeriesSet{
index: q.index,
chunks: q.series,
chunks: q.chunks,
it: p,
absent: absent,
mint: q.mint,
@ -425,7 +425,7 @@ func (s *partitionSeriesSet) Next() bool {
// blockSeriesSet is a set of series from an inverted index query.
type blockSeriesSet struct {
index IndexReader
chunks SeriesReader
chunks ChunkReader
it Postings // postings list referencing series
absent []string // labels that must not be set for result series
mint, maxt int64 // considered time range

84
vendor/github.com/fabxc/tsdb/reader.go generated vendored
View file

@ -3,6 +3,8 @@ package tsdb
import (
"encoding/binary"
"fmt"
"io"
"path/filepath"
"strings"
"github.com/fabxc/tsdb/chunks"
@ -10,23 +12,43 @@ import (
"github.com/pkg/errors"
)
// SeriesReader provides reading access of serialized time series data.
type SeriesReader interface {
// ChunkReader provides reading access of serialized time series data.
type ChunkReader interface {
// Chunk returns the series data chunk with the given reference.
Chunk(ref uint64) (chunks.Chunk, error)
// Close releases all underlying resources of the reader.
Close() error
}
// seriesReader implements a SeriesReader for a serialized byte stream
// chunkReader implements a SeriesReader for a serialized byte stream
// of series data.
type seriesReader struct {
type chunkReader struct {
// The underlying bytes holding the encoded series data.
bs [][]byte
// Closers for resources behind the byte slices.
cs []io.Closer
}
func newSeriesReader(bs [][]byte) (*seriesReader, error) {
s := &seriesReader{bs: bs}
// newChunkReader returns a new chunkReader based on mmaped files found in dir.
func newChunkReader(dir string) (*chunkReader, error) {
files, err := sequenceFiles(dir, "")
if err != nil {
return nil, err
}
var cr chunkReader
for i, b := range bs {
for _, fn := range files {
f, err := openMmapFile(fn)
if err != nil {
return nil, errors.Wrapf(err, "mmap files")
}
cr.cs = append(cr.cs, f)
cr.bs = append(cr.bs, f.b)
}
for i, b := range cr.bs {
if len(b) < 4 {
return nil, errors.Wrapf(errInvalidSize, "validate magic in segment %d", i)
}
@ -35,10 +57,14 @@ func newSeriesReader(bs [][]byte) (*seriesReader, error) {
return nil, fmt.Errorf("invalid magic number %x", m)
}
}
return s, nil
return &cr, nil
}
func (s *seriesReader) Chunk(ref uint64) (chunks.Chunk, error) {
func (s *chunkReader) Close() error {
return closeAll(s.cs...)
}
func (s *chunkReader) Chunk(ref uint64) (chunks.Chunk, error) {
var (
seq = int(ref >> 32)
off = int((ref << 32) >> 32)
@ -80,6 +106,9 @@ type IndexReader interface {
// LabelIndices returns the label pairs for which indices exist.
LabelIndices() ([][]string, error)
// Close released the underlying resources of the reader.
Close() error
}
// StringTuples provides access to a sorted list of string tuples.
@ -94,6 +123,9 @@ type indexReader struct {
// The underlying byte slice holding the encoded series data.
b []byte
// Close that releases the underlying resources of the byte slice.
c io.Closer
// Cached hashmaps of section offsets.
labels map[string]uint32
postings map[string]uint32
@ -104,34 +136,38 @@ var (
errInvalidFlag = fmt.Errorf("invalid flag")
)
func newIndexReader(b []byte) (*indexReader, error) {
if len(b) < 4 {
return nil, errors.Wrap(errInvalidSize, "index header")
// newIndexReader returns a new indexReader on the given directory.
func newIndexReader(dir string) (*indexReader, error) {
f, err := openMmapFile(filepath.Join(dir, "index"))
if err != nil {
return nil, err
}
r := &indexReader{b: b}
r := &indexReader{b: f.b, c: f}
// Verify magic number.
if m := binary.BigEndian.Uint32(b[:4]); m != MagicIndex {
return nil, fmt.Errorf("invalid magic number %x", m)
if len(f.b) < 4 {
return nil, errors.Wrap(errInvalidSize, "index header")
}
if m := binary.BigEndian.Uint32(r.b[:4]); m != MagicIndex {
return nil, errors.Errorf("invalid magic number %x", m)
}
var err error
// The last two 4 bytes hold the pointers to the hashmaps.
loff := binary.BigEndian.Uint32(b[len(b)-8 : len(b)-4])
poff := binary.BigEndian.Uint32(b[len(b)-4:])
loff := binary.BigEndian.Uint32(r.b[len(r.b)-8 : len(r.b)-4])
poff := binary.BigEndian.Uint32(r.b[len(r.b)-4:])
f, b, err := r.section(loff)
flag, b, err := r.section(loff)
if err != nil {
return nil, errors.Wrapf(err, "label index hashmap section at %d", loff)
}
if r.labels, err = readHashmap(f, b); err != nil {
if r.labels, err = readHashmap(flag, b); err != nil {
return nil, errors.Wrap(err, "read label index hashmap")
}
f, b, err = r.section(poff)
flag, b, err = r.section(poff)
if err != nil {
return nil, errors.Wrapf(err, "postings hashmap section at %d", loff)
}
if r.postings, err = readHashmap(f, b); err != nil {
if r.postings, err = readHashmap(flag, b); err != nil {
return nil, errors.Wrap(err, "read postings hashmap")
}
@ -169,6 +205,10 @@ func readHashmap(flag byte, b []byte) (map[string]uint32, error) {
return h, nil
}
func (r *indexReader) Close() error {
return r.c.Close()
}
func (r *indexReader) section(o uint32) (byte, []byte, error) {
b := r.b[o:]

246
vendor/github.com/fabxc/tsdb/writer.go generated vendored
View file

@ -6,10 +6,13 @@ import (
"hash"
"hash/crc32"
"io"
"os"
"path/filepath"
"sort"
"strings"
"github.com/bradfitz/slice"
"github.com/coreos/etcd/pkg/fileutil"
"github.com/fabxc/tsdb/chunks"
"github.com/fabxc/tsdb/labels"
"github.com/pkg/errors"
@ -33,9 +36,6 @@ type ChunkWriter interface {
// is set and can be used to retrieve the chunks from the written data.
WriteChunks(chunks ...ChunkMeta) error
// Size returns the size of the data written so far.
Size() int64
// Close writes any required finalization and closes the resources
// associated with the underlying writer.
Close() error
@ -44,20 +44,109 @@ type ChunkWriter interface {
// chunkWriter implements the ChunkWriter interface for the standard
// serialization format.
type chunkWriter struct {
ow io.Writer
w *bufio.Writer
n int64
c int
crc32 hash.Hash
dirFile *os.File
files []*os.File
wbuf *bufio.Writer
n int64
crc32 hash.Hash
segmentSize int64
}
func newChunkWriter(w io.Writer) *chunkWriter {
return &chunkWriter{
ow: w,
w: bufio.NewWriterSize(w, 1*1024*1024),
n: 0,
crc32: crc32.New(crc32.MakeTable(crc32.Castagnoli)),
const (
defaultChunkSegmentSize = 512 * 1024 * 1024
chunksFormatV1 = 1
indexFormatV1 = 1
)
func newChunkWriter(dir string) (*chunkWriter, error) {
if err := os.MkdirAll(dir, 0777); err != nil {
return nil, err
}
dirFile, err := fileutil.OpenDir(dir)
if err != nil {
return nil, err
}
cw := &chunkWriter{
dirFile: dirFile,
n: 0,
crc32: crc32.New(crc32.MakeTable(crc32.Castagnoli)),
segmentSize: defaultChunkSegmentSize,
}
return cw, nil
}
func (w *chunkWriter) tail() *os.File {
if len(w.files) == 0 {
return nil
}
return w.files[len(w.files)-1]
}
// finalizeTail writes all pending data to the current tail file,
// truncates its size, and closes it.
func (w *chunkWriter) finalizeTail() error {
tf := w.tail()
if tf == nil {
return nil
}
if err := w.wbuf.Flush(); err != nil {
return err
}
if err := fileutil.Fsync(tf); err != nil {
return err
}
// As the file was pre-allocated, we truncate any superfluous zero bytes.
off, err := tf.Seek(0, os.SEEK_CUR)
if err != nil {
return err
}
if err := tf.Truncate(off); err != nil {
return err
}
return tf.Close()
}
func (w *chunkWriter) cut() error {
// Sync current tail to disk and close.
w.finalizeTail()
p, _, err := nextSequenceFile(w.dirFile.Name(), "")
if err != nil {
return err
}
f, err := os.OpenFile(p, os.O_WRONLY|os.O_CREATE, 0666)
if err != nil {
return err
}
if err = fileutil.Preallocate(f, w.segmentSize, true); err != nil {
return err
}
if err = w.dirFile.Sync(); err != nil {
return err
}
// Write header metadata for new file.
metab := make([]byte, 8)
binary.BigEndian.PutUint32(metab[:4], MagicSeries)
metab[4] = chunksFormatV1
if _, err := f.Write(metab); err != nil {
return err
}
w.files = append(w.files, f)
if w.wbuf != nil {
w.wbuf.Reset(f)
} else {
w.wbuf = bufio.NewWriterSize(f, 8*1024*1024)
}
w.n = 8
return nil
}
func (w *chunkWriter) write(wr io.Writer, b []byte) error {
@ -66,44 +155,40 @@ func (w *chunkWriter) write(wr io.Writer, b []byte) error {
return err
}
func (w *chunkWriter) writeMeta() error {
b := [8]byte{}
binary.BigEndian.PutUint32(b[:4], MagicSeries)
b[4] = flagStd
return w.write(w.w, b[:])
}
func (w *chunkWriter) WriteChunks(chks ...ChunkMeta) error {
// Initialize with meta data.
if w.n == 0 {
if err := w.writeMeta(); err != nil {
// Calculate maximum space we need and cut a new segment in case
// we don't fit into the current one.
maxLen := int64(binary.MaxVarintLen32)
for _, c := range chks {
maxLen += binary.MaxVarintLen32 + 1
maxLen += int64(len(c.Chunk.Bytes()))
}
newsz := w.n + maxLen
if w.wbuf == nil || w.n > w.segmentSize || newsz > w.segmentSize && maxLen <= w.segmentSize {
if err := w.cut(); err != nil {
return err
}
}
// Write chunks sequentially and set the reference field in the ChunkMeta.
w.crc32.Reset()
wr := io.MultiWriter(w.crc32, w.w)
wr := io.MultiWriter(w.crc32, w.wbuf)
// For normal reads we don't need the number of the chunk section but
// it allows us to verify checksums without reading the index file.
// The offsets are also technically enough to calculate chunk size. but
// holding the length of each chunk could later allow for adding padding
// between chunks.
b := [binary.MaxVarintLen32]byte{}
n := binary.PutUvarint(b[:], uint64(len(chks)))
b := make([]byte, binary.MaxVarintLen32)
n := binary.PutUvarint(b, uint64(len(chks)))
if err := w.write(wr, b[:n]); err != nil {
return err
}
seq := uint64(w.seq()) << 32
for i := range chks {
chk := &chks[i]
chk.Ref = uint64(w.n)
chk.Ref = seq | uint64(w.n)
n = binary.PutUvarint(b[:], uint64(len(chk.Chunk.Bytes())))
n = binary.PutUvarint(b, uint64(len(chk.Chunk.Bytes())))
if err := w.write(wr, b[:n]); err != nil {
return err
@ -117,24 +202,18 @@ func (w *chunkWriter) WriteChunks(chks ...ChunkMeta) error {
chk.Chunk = nil
}
if err := w.write(w.w, w.crc32.Sum(nil)); err != nil {
if err := w.write(w.wbuf, w.crc32.Sum(nil)); err != nil {
return err
}
return nil
}
func (w *chunkWriter) Size() int64 {
return w.n
func (w *chunkWriter) seq() int {
return len(w.files) - 1
}
func (w *chunkWriter) Close() error {
// Initialize block in case no data was written to it.
if w.n == 0 {
if err := w.writeMeta(); err != nil {
return err
}
}
return w.w.Flush()
return w.finalizeTail()
}
// ChunkMeta holds information about a chunk of data.
@ -155,7 +234,7 @@ type IndexWriter interface {
// of chunks that the index can reference.
// The reference number is used to resolve a series against the postings
// list iterator. It only has to be available during the write processing.
AddSeries(ref uint32, l labels.Labels, chunks ...ChunkMeta)
AddSeries(ref uint32, l labels.Labels, chunks ...ChunkMeta) error
// WriteLabelIndex serializes an index from label names to values.
// The passed in values chained tuples of strings of the length of names.
@ -164,9 +243,6 @@ type IndexWriter interface {
// WritePostings writes a postings list for a single label pair.
WritePostings(name, value string, it Postings) error
// Size returns the size of the data written so far.
Size() int64
// Close writes any finalization and closes theresources associated with
// the underlying writer.
Close() error
@ -181,13 +257,12 @@ type indexWriterSeries struct {
// indexWriter implements the IndexWriter interface for the standard
// serialization format.
type indexWriter struct {
ow io.Writer
w *bufio.Writer
f *os.File
bufw *bufio.Writer
n int64
started bool
series map[uint32]*indexWriterSeries
series map[uint32]*indexWriterSeries
symbols map[string]uint32 // symbol offsets
labelIndexes []hashEntry // label index offsets
postings []hashEntry // postings lists offsets
@ -195,15 +270,31 @@ type indexWriter struct {
crc32 hash.Hash
}
func newIndexWriter(w io.Writer) *indexWriter {
return &indexWriter{
w: bufio.NewWriterSize(w, 1*1024*1024),
ow: w,
func newIndexWriter(dir string) (*indexWriter, error) {
df, err := fileutil.OpenDir(dir)
if err != nil {
return nil, err
}
f, err := os.OpenFile(filepath.Join(dir, "index"), os.O_CREATE|os.O_WRONLY, 0666)
if err != nil {
return nil, err
}
if err := fileutil.Fsync(df); err != nil {
return nil, errors.Wrap(err, "sync dir")
}
iw := &indexWriter{
f: f,
bufw: bufio.NewWriterSize(f, 1*1024*1024),
n: 0,
symbols: make(map[string]uint32, 4096),
series: make(map[uint32]*indexWriterSeries, 4096),
crc32: crc32.New(crc32.MakeTable(crc32.Castagnoli)),
}
if err := iw.writeMeta(); err != nil {
return nil, err
}
return iw, nil
}
func (w *indexWriter) write(wr io.Writer, b []byte) error {
@ -215,7 +306,7 @@ func (w *indexWriter) write(wr io.Writer, b []byte) error {
// section writes a CRC32 checksummed section of length l and guarded by flag.
func (w *indexWriter) section(l uint32, flag byte, f func(w io.Writer) error) error {
w.crc32.Reset()
wr := io.MultiWriter(w.crc32, w.w)
wr := io.MultiWriter(w.crc32, w.bufw)
b := [5]byte{flag, 0, 0, 0, 0}
binary.BigEndian.PutUint32(b[1:], l)
@ -225,9 +316,9 @@ func (w *indexWriter) section(l uint32, flag byte, f func(w io.Writer) error) er
}
if err := f(wr); err != nil {
return errors.Wrap(err, "contents write func")
return errors.Wrap(err, "write contents")
}
if err := w.write(w.w, w.crc32.Sum(nil)); err != nil {
if err := w.write(w.bufw, w.crc32.Sum(nil)); err != nil {
return errors.Wrap(err, "writing checksum")
}
return nil
@ -239,10 +330,13 @@ func (w *indexWriter) writeMeta() error {
binary.BigEndian.PutUint32(b[:4], MagicIndex)
b[4] = flagStd
return w.write(w.w, b[:])
return w.write(w.bufw, b[:])
}
func (w *indexWriter) AddSeries(ref uint32, lset labels.Labels, chunks ...ChunkMeta) {
func (w *indexWriter) AddSeries(ref uint32, lset labels.Labels, chunks ...ChunkMeta) error {
if _, ok := w.series[ref]; ok {
return errors.Errorf("series with reference %d already added", ref)
}
// Populate the symbol table from all label sets we have to reference.
for _, l := range lset {
w.symbols[l.Name] = 0
@ -253,6 +347,7 @@ func (w *indexWriter) AddSeries(ref uint32, lset labels.Labels, chunks ...ChunkM
labels: lset,
chunks: chunks,
}
return nil
}
func (w *indexWriter) writeSymbols() error {
@ -340,9 +435,6 @@ func (w *indexWriter) writeSeries() error {
}
func (w *indexWriter) init() error {
if err := w.writeMeta(); err != nil {
return err
}
if err := w.writeSymbols(); err != nil {
return err
}
@ -439,10 +531,6 @@ func (w *indexWriter) WritePostings(name, value string, it Postings) error {
})
}
func (w *indexWriter) Size() int64 {
return w.n
}
type hashEntry struct {
name string
offset uint32
@ -482,24 +570,22 @@ func (w *indexWriter) finalize() error {
// for any index query.
// TODO(fabxc): also store offset to series section to allow plain
// iteration over all existing series?
// TODO(fabxc): store references like these that are not resolved via direct
// mmap using explicit endianness?
b := [8]byte{}
binary.BigEndian.PutUint32(b[:4], lo)
binary.BigEndian.PutUint32(b[4:], po)
return w.write(w.w, b[:])
return w.write(w.bufw, b[:])
}
func (w *indexWriter) Close() error {
// Handle blocks without any data.
if !w.started {
if err := w.init(); err != nil {
return err
}
}
if err := w.finalize(); err != nil {
return err
}
return w.w.Flush()
if err := w.bufw.Flush(); err != nil {
return err
}
if err := fileutil.Fsync(w.f); err != nil {
return err
}
return w.f.Close()
}

6
vendor/vendor.json vendored
View file

@ -368,10 +368,10 @@
"revisionTime": "2016-09-30T00:14:02Z"
},
{
"checksumSHA1": "edB8coiX4s6hf6BZuYE5+MPJYX8=",
"checksumSHA1": "UeErAjCWDt1vzaXGQGxnenFUg7w=",
"path": "github.com/fabxc/tsdb",
"revision": "f734773214e1bcb7962d92155863110d01214db5",
"revisionTime": "2017-02-19T12:01:19Z"
"revision": "db5c88ea9ac9400b0e58ef18b9b272c34b98639b",
"revisionTime": "2017-02-28T07:40:51Z"
},
{
"checksumSHA1": "uVzWuLvF646YjiKomsc2CR1ua58=",