mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-15 00:13:30 +01:00
358 lines
9.1 KiB
Go
358 lines
9.1 KiB
Go
package storage
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
"sync/atomic"
|
|
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/encoding"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
|
|
)
|
|
|
|
// MetricBlock is a time series block for a single metric.
|
|
type MetricBlock struct {
|
|
MetricName []byte
|
|
|
|
Block *Block
|
|
}
|
|
|
|
// Marshal marshals MetricBlock to dst
|
|
func (mb *MetricBlock) Marshal(dst []byte) []byte {
|
|
dst = encoding.MarshalBytes(dst, mb.MetricName)
|
|
return MarshalBlock(dst, mb.Block)
|
|
}
|
|
|
|
// MarshalBlock marshals b to dst.
|
|
//
|
|
// b.MarshalData must be called on b before calling MarshalBlock.
|
|
func MarshalBlock(dst []byte, b *Block) []byte {
|
|
dst = b.bh.Marshal(dst)
|
|
dst = encoding.MarshalBytes(dst, b.timestampsData)
|
|
dst = encoding.MarshalBytes(dst, b.valuesData)
|
|
return dst
|
|
}
|
|
|
|
// Unmarshal unmarshals MetricBlock from src
|
|
func (mb *MetricBlock) Unmarshal(src []byte) ([]byte, error) {
|
|
if mb.Block == nil {
|
|
logger.Panicf("BUG: MetricBlock.Block must be non-nil when calling Unmarshal!")
|
|
} else {
|
|
mb.Block.Reset()
|
|
}
|
|
tail, mn, err := encoding.UnmarshalBytes(src)
|
|
if err != nil {
|
|
return tail, fmt.Errorf("cannot unmarshal MetricName: %s", err)
|
|
}
|
|
mb.MetricName = append(mb.MetricName[:0], mn...)
|
|
src = tail
|
|
|
|
return UnmarshalBlock(mb.Block, src)
|
|
}
|
|
|
|
// UnmarshalBlock unmarshal Block from src to dst.
|
|
//
|
|
// dst.UnmarshalData isn't called on the block.
|
|
func UnmarshalBlock(dst *Block, src []byte) ([]byte, error) {
|
|
tail, err := dst.bh.Unmarshal(src)
|
|
if err != nil {
|
|
return tail, fmt.Errorf("cannot unmarshal blockHeader: %s", err)
|
|
}
|
|
src = tail
|
|
|
|
tail, tds, err := encoding.UnmarshalBytes(src)
|
|
if err != nil {
|
|
return tail, fmt.Errorf("cannot unmarshal timestampsData: %s", err)
|
|
}
|
|
dst.timestampsData = append(dst.timestampsData[:0], tds...)
|
|
src = tail
|
|
|
|
tail, vd, err := encoding.UnmarshalBytes(src)
|
|
if err != nil {
|
|
return tail, fmt.Errorf("cannot unmarshal valuesData: %s", err)
|
|
}
|
|
dst.valuesData = append(dst.valuesData[:0], vd...)
|
|
src = tail
|
|
|
|
return src, nil
|
|
}
|
|
|
|
// Search is a search for time series.
|
|
type Search struct {
|
|
// MetricBlock is updated with each Search.NextMetricBlock call.
|
|
MetricBlock MetricBlock
|
|
|
|
storage *Storage
|
|
|
|
ts tableSearch
|
|
|
|
err error
|
|
|
|
needClosing bool
|
|
|
|
// MissingMetricNamesForMetricID is a counter of missing MetricID -> MetricName
|
|
// entries during the search.
|
|
// High rate may mean corrupted indexDB.
|
|
MissingMetricNamesForMetricID uint64
|
|
}
|
|
|
|
func (s *Search) reset() {
|
|
s.MetricBlock.MetricName = s.MetricBlock.MetricName[:0]
|
|
s.MetricBlock.Block = nil
|
|
|
|
s.storage = nil
|
|
s.ts.reset()
|
|
s.err = nil
|
|
s.needClosing = false
|
|
s.MissingMetricNamesForMetricID = 0
|
|
}
|
|
|
|
// Init initializes s from the given storage, tfss and tr.
|
|
//
|
|
// MustClose must be called when the search is done.
|
|
func (s *Search) Init(storage *Storage, tfss []*TagFilters, tr TimeRange, maxMetrics int) {
|
|
if s.needClosing {
|
|
logger.Panicf("BUG: missing MustClose call before the next call to Init")
|
|
}
|
|
|
|
s.reset()
|
|
s.needClosing = true
|
|
|
|
tsids, err := storage.searchTSIDs(tfss, tr, maxMetrics)
|
|
|
|
// It is ok to call Init on error from storage.searchTSIDs.
|
|
// Init must be called before returning because it will fail
|
|
// on Seach.MustClose otherwise.
|
|
s.ts.Init(storage.tb, tsids, tr)
|
|
|
|
if err != nil {
|
|
s.err = err
|
|
return
|
|
}
|
|
|
|
s.storage = storage
|
|
}
|
|
|
|
// MustClose closes the Search.
|
|
func (s *Search) MustClose() {
|
|
if !s.needClosing {
|
|
logger.Panicf("BUG: missing Init call before MustClose")
|
|
}
|
|
s.ts.MustClose()
|
|
s.reset()
|
|
}
|
|
|
|
// Error returns the last error from s.
|
|
func (s *Search) Error() error {
|
|
if s.err == io.EOF {
|
|
return nil
|
|
}
|
|
return s.err
|
|
}
|
|
|
|
// NextMetricBlock proceeds to the next MetricBlock.
|
|
func (s *Search) NextMetricBlock() bool {
|
|
if s.err != nil {
|
|
return false
|
|
}
|
|
for s.ts.NextBlock() {
|
|
tsid := &s.ts.Block.bh.TSID
|
|
var err error
|
|
s.MetricBlock.MetricName, err = s.storage.searchMetricName(s.MetricBlock.MetricName[:0], tsid.MetricID, tsid.AccountID, tsid.ProjectID)
|
|
if err != nil {
|
|
if err == io.EOF {
|
|
// Missing metricName for tsid.MetricID. Increment error counter and skip it.
|
|
atomic.AddUint64(&s.MissingMetricNamesForMetricID, 1)
|
|
continue
|
|
}
|
|
s.err = err
|
|
return false
|
|
}
|
|
s.MetricBlock.Block = s.ts.Block
|
|
return true
|
|
}
|
|
if err := s.ts.Error(); err != nil {
|
|
s.err = err
|
|
return false
|
|
}
|
|
|
|
s.err = io.EOF
|
|
return false
|
|
}
|
|
|
|
// SearchQuery is used for sending search queries from vmselect to vmstorage.
|
|
type SearchQuery struct {
|
|
AccountID uint32
|
|
ProjectID uint32
|
|
MinTimestamp int64
|
|
MaxTimestamp int64
|
|
TagFilterss [][]TagFilter
|
|
}
|
|
|
|
// TagFilter represents a single tag filter from SearchQuery.
|
|
type TagFilter struct {
|
|
Key []byte
|
|
Value []byte
|
|
IsNegative bool
|
|
IsRegexp bool
|
|
}
|
|
|
|
// String returns string representation of tf.
|
|
func (tf *TagFilter) String() string {
|
|
var bb bytesutil.ByteBuffer
|
|
fmt.Fprintf(&bb, "{Key=%q, Value=%q, IsNegative: %v, IsRegexp: %v}", tf.Key, tf.Value, tf.IsNegative, tf.IsRegexp)
|
|
return string(bb.B)
|
|
}
|
|
|
|
// Marshal appends marshaled tf to dst and returns the result.
|
|
func (tf *TagFilter) Marshal(dst []byte) []byte {
|
|
dst = encoding.MarshalBytes(dst, tf.Key)
|
|
dst = encoding.MarshalBytes(dst, tf.Value)
|
|
|
|
x := 0
|
|
if tf.IsNegative {
|
|
x = 2
|
|
}
|
|
if tf.IsRegexp {
|
|
x |= 1
|
|
}
|
|
dst = append(dst, byte(x))
|
|
|
|
return dst
|
|
}
|
|
|
|
// Unmarshal unmarshals tf from src and returns the tail.
|
|
func (tf *TagFilter) Unmarshal(src []byte) ([]byte, error) {
|
|
tail, k, err := encoding.UnmarshalBytes(src)
|
|
if err != nil {
|
|
return tail, fmt.Errorf("cannot unmarshal Key: %s", err)
|
|
}
|
|
tf.Key = append(tf.Key[:0], k...)
|
|
src = tail
|
|
|
|
tail, v, err := encoding.UnmarshalBytes(src)
|
|
if err != nil {
|
|
return tail, fmt.Errorf("cannot unmarshal Value: %s", err)
|
|
}
|
|
tf.Value = append(tf.Value[:0], v...)
|
|
src = tail
|
|
|
|
if len(src) < 1 {
|
|
return src, fmt.Errorf("cannot unmarshal IsNegative+IsRegexp from empty src")
|
|
}
|
|
x := src[0]
|
|
switch x {
|
|
case 0:
|
|
tf.IsNegative = false
|
|
tf.IsRegexp = false
|
|
case 1:
|
|
tf.IsNegative = false
|
|
tf.IsRegexp = true
|
|
case 2:
|
|
tf.IsNegative = true
|
|
tf.IsRegexp = false
|
|
case 3:
|
|
tf.IsNegative = true
|
|
tf.IsRegexp = true
|
|
default:
|
|
return src, fmt.Errorf("unexpected value for IsNegative+IsRegexp: %d; must be in the range [0..3]", x)
|
|
}
|
|
src = src[1:]
|
|
|
|
return src, nil
|
|
}
|
|
|
|
// String returns string representation of the search query.
|
|
func (sq *SearchQuery) String() string {
|
|
var bb bytesutil.ByteBuffer
|
|
fmt.Fprintf(&bb, "AccountID=%d, ProjectID=%d, MinTimestamp=%s, MaxTimestamp=%s, TagFilters=[\n",
|
|
sq.AccountID, sq.ProjectID, timestampToTime(sq.MinTimestamp), timestampToTime(sq.MaxTimestamp))
|
|
for _, tagFilters := range sq.TagFilterss {
|
|
for _, tf := range tagFilters {
|
|
fmt.Fprintf(&bb, "%s", tf.String())
|
|
}
|
|
fmt.Fprintf(&bb, "\n")
|
|
}
|
|
fmt.Fprintf(&bb, "]")
|
|
return string(bb.B)
|
|
}
|
|
|
|
// Marshal appends marshaled sq to dst and returns the result.
|
|
func (sq *SearchQuery) Marshal(dst []byte) []byte {
|
|
dst = encoding.MarshalUint32(dst, sq.AccountID)
|
|
dst = encoding.MarshalUint32(dst, sq.ProjectID)
|
|
dst = encoding.MarshalVarInt64(dst, sq.MinTimestamp)
|
|
dst = encoding.MarshalVarInt64(dst, sq.MaxTimestamp)
|
|
dst = encoding.MarshalVarUint64(dst, uint64(len(sq.TagFilterss)))
|
|
for _, tagFilters := range sq.TagFilterss {
|
|
dst = encoding.MarshalVarUint64(dst, uint64(len(tagFilters)))
|
|
for i := range tagFilters {
|
|
dst = tagFilters[i].Marshal(dst)
|
|
}
|
|
}
|
|
return dst
|
|
}
|
|
|
|
// Unmarshal unmarshals sq from src and returns the tail.
|
|
func (sq *SearchQuery) Unmarshal(src []byte) ([]byte, error) {
|
|
if len(src) < 4 {
|
|
return src, fmt.Errorf("cannot unmarshal AccountID: too short src len: %d; must be at least %d bytes", len(src), 4)
|
|
}
|
|
sq.AccountID = encoding.UnmarshalUint32(src)
|
|
src = src[4:]
|
|
|
|
if len(src) < 4 {
|
|
return src, fmt.Errorf("cannot unmarshal ProjectID: too short src len: %d; must be at least %d bytes", len(src), 4)
|
|
}
|
|
sq.ProjectID = encoding.UnmarshalUint32(src)
|
|
src = src[4:]
|
|
|
|
tail, minTs, err := encoding.UnmarshalVarInt64(src)
|
|
if err != nil {
|
|
return src, fmt.Errorf("cannot unmarshal MinTimestamp: %s", err)
|
|
}
|
|
sq.MinTimestamp = minTs
|
|
src = tail
|
|
|
|
tail, maxTs, err := encoding.UnmarshalVarInt64(src)
|
|
if err != nil {
|
|
return src, fmt.Errorf("cannot unmarshal MaxTimestamp: %s", err)
|
|
}
|
|
sq.MaxTimestamp = maxTs
|
|
src = tail
|
|
|
|
tail, tfssCount, err := encoding.UnmarshalVarUint64(src)
|
|
if err != nil {
|
|
return src, fmt.Errorf("cannot unmarshal the count of TagFilterss: %s", err)
|
|
}
|
|
if n := int(tfssCount) - cap(sq.TagFilterss); n > 0 {
|
|
sq.TagFilterss = append(sq.TagFilterss[:cap(sq.TagFilterss)], make([][]TagFilter, n)...)
|
|
}
|
|
sq.TagFilterss = sq.TagFilterss[:tfssCount]
|
|
src = tail
|
|
|
|
for i := 0; i < int(tfssCount); i++ {
|
|
tail, tfsCount, err := encoding.UnmarshalVarUint64(src)
|
|
if err != nil {
|
|
return src, fmt.Errorf("cannot unmarshal the count of TagFilters: %s", err)
|
|
}
|
|
src = tail
|
|
|
|
tagFilters := sq.TagFilterss[i]
|
|
if n := int(tfsCount) - cap(tagFilters); n > 0 {
|
|
tagFilters = append(tagFilters[:cap(tagFilters)], make([]TagFilter, n)...)
|
|
}
|
|
tagFilters = tagFilters[:tfsCount]
|
|
for j := 0; j < int(tfsCount); j++ {
|
|
tail, err := tagFilters[j].Unmarshal(src)
|
|
if err != nil {
|
|
return tail, fmt.Errorf("cannot unmarshal TagFilter #%d: %s", j, err)
|
|
}
|
|
src = tail
|
|
}
|
|
sq.TagFilterss[i] = tagFilters
|
|
}
|
|
|
|
return src, nil
|
|
}
|