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filter_in.go
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filter_in.go
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package logstorage
import (
"fmt"
"math"
"strings"
"sync"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/encoding"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
)
// filterIn matches any exact value from the values map.
//
// Example LogsQL: `fieldName:in("foo", "bar baz")`
type filterIn struct {
fieldName string
values []string
// needeExecuteQuery is set to true if q must be executed for populating values before filter execution.
needExecuteQuery bool
// If q is non-nil, then values must be populated from q before filter execution.
q *Query
// qFieldName must be set to field name for obtaining values from if q is non-nil.
qFieldName string
tokenSetsOnce sync.Once
tokenSets [][]string
stringValuesOnce sync.Once
stringValues map[string]struct{}
uint8ValuesOnce sync.Once
uint8Values map[string]struct{}
uint16ValuesOnce sync.Once
uint16Values map[string]struct{}
uint32ValuesOnce sync.Once
uint32Values map[string]struct{}
uint64ValuesOnce sync.Once
uint64Values map[string]struct{}
float64ValuesOnce sync.Once
float64Values map[string]struct{}
ipv4ValuesOnce sync.Once
ipv4Values map[string]struct{}
timestampISO8601ValuesOnce sync.Once
timestampISO8601Values map[string]struct{}
}
func (fi *filterIn) String() string {
args := ""
if fi.q != nil {
args = fi.q.String()
} else {
values := fi.values
a := make([]string, len(values))
for i, value := range values {
a[i] = quoteTokenIfNeeded(value)
}
args = strings.Join(a, ",")
}
return fmt.Sprintf("%sin(%s)", quoteFieldNameIfNeeded(fi.fieldName), args)
}
func (fi *filterIn) updateNeededFields(neededFields fieldsSet) {
neededFields.add(fi.fieldName)
}
func (fi *filterIn) getTokenSets() [][]string {
fi.tokenSetsOnce.Do(fi.initTokenSets)
return fi.tokenSets
}
// It is faster to match every row in the block instead of checking too big number of tokenSets against bloom filter.
const maxTokenSetsToInit = 1000
func (fi *filterIn) initTokenSets() {
values := fi.values
tokenSetsLen := len(values)
if tokenSetsLen > maxTokenSetsToInit {
tokenSetsLen = maxTokenSetsToInit
}
tokenSets := make([][]string, 0, tokenSetsLen+1)
for _, v := range values {
tokens := tokenizeStrings(nil, []string{v})
tokenSets = append(tokenSets, tokens)
if len(tokens) > maxTokenSetsToInit {
break
}
}
fi.tokenSets = tokenSets
}
func (fi *filterIn) getStringValues() map[string]struct{} {
fi.stringValuesOnce.Do(fi.initStringValues)
return fi.stringValues
}
func (fi *filterIn) initStringValues() {
values := fi.values
m := make(map[string]struct{}, len(values))
for _, v := range values {
m[v] = struct{}{}
}
fi.stringValues = m
}
func (fi *filterIn) getUint8Values() map[string]struct{} {
fi.uint8ValuesOnce.Do(fi.initUint8Values)
return fi.uint8Values
}
func (fi *filterIn) initUint8Values() {
values := fi.values
m := make(map[string]struct{}, len(values))
buf := make([]byte, 0, len(values)*1)
for _, v := range values {
n, ok := tryParseUint64(v)
if !ok || n >= (1<<8) {
continue
}
bufLen := len(buf)
buf = append(buf, byte(n))
s := bytesutil.ToUnsafeString(buf[bufLen:])
m[s] = struct{}{}
}
fi.uint8Values = m
}
func (fi *filterIn) getUint16Values() map[string]struct{} {
fi.uint16ValuesOnce.Do(fi.initUint16Values)
return fi.uint16Values
}
func (fi *filterIn) initUint16Values() {
values := fi.values
m := make(map[string]struct{}, len(values))
buf := make([]byte, 0, len(values)*2)
for _, v := range values {
n, ok := tryParseUint64(v)
if !ok || n >= (1<<16) {
continue
}
bufLen := len(buf)
buf = encoding.MarshalUint16(buf, uint16(n))
s := bytesutil.ToUnsafeString(buf[bufLen:])
m[s] = struct{}{}
}
fi.uint16Values = m
}
func (fi *filterIn) getUint32Values() map[string]struct{} {
fi.uint32ValuesOnce.Do(fi.initUint32Values)
return fi.uint32Values
}
func (fi *filterIn) initUint32Values() {
values := fi.values
m := make(map[string]struct{}, len(values))
buf := make([]byte, 0, len(values)*4)
for _, v := range values {
n, ok := tryParseUint64(v)
if !ok || n >= (1<<32) {
continue
}
bufLen := len(buf)
buf = encoding.MarshalUint32(buf, uint32(n))
s := bytesutil.ToUnsafeString(buf[bufLen:])
m[s] = struct{}{}
}
fi.uint32Values = m
}
func (fi *filterIn) getUint64Values() map[string]struct{} {
fi.uint64ValuesOnce.Do(fi.initUint64Values)
return fi.uint64Values
}
func (fi *filterIn) initUint64Values() {
values := fi.values
m := make(map[string]struct{}, len(values))
buf := make([]byte, 0, len(values)*8)
for _, v := range values {
n, ok := tryParseUint64(v)
if !ok {
continue
}
bufLen := len(buf)
buf = encoding.MarshalUint64(buf, n)
s := bytesutil.ToUnsafeString(buf[bufLen:])
m[s] = struct{}{}
}
fi.uint64Values = m
}
func (fi *filterIn) getFloat64Values() map[string]struct{} {
fi.float64ValuesOnce.Do(fi.initFloat64Values)
return fi.float64Values
}
func (fi *filterIn) initFloat64Values() {
values := fi.values
m := make(map[string]struct{}, len(values))
buf := make([]byte, 0, len(values)*8)
for _, v := range values {
f, ok := tryParseFloat64(v)
if !ok {
continue
}
n := math.Float64bits(f)
bufLen := len(buf)
buf = encoding.MarshalUint64(buf, n)
s := bytesutil.ToUnsafeString(buf[bufLen:])
m[s] = struct{}{}
}
fi.float64Values = m
}
func (fi *filterIn) getIPv4Values() map[string]struct{} {
fi.ipv4ValuesOnce.Do(fi.initIPv4Values)
return fi.ipv4Values
}
func (fi *filterIn) initIPv4Values() {
values := fi.values
m := make(map[string]struct{}, len(values))
buf := make([]byte, 0, len(values)*4)
for _, v := range values {
n, ok := tryParseIPv4(v)
if !ok {
continue
}
bufLen := len(buf)
buf = encoding.MarshalUint32(buf, uint32(n))
s := bytesutil.ToUnsafeString(buf[bufLen:])
m[s] = struct{}{}
}
fi.ipv4Values = m
}
func (fi *filterIn) getTimestampISO8601Values() map[string]struct{} {
fi.timestampISO8601ValuesOnce.Do(fi.initTimestampISO8601Values)
return fi.timestampISO8601Values
}
func (fi *filterIn) initTimestampISO8601Values() {
values := fi.values
m := make(map[string]struct{}, len(values))
buf := make([]byte, 0, len(values)*8)
for _, v := range values {
n, ok := tryParseTimestampISO8601(v)
if !ok {
continue
}
bufLen := len(buf)
buf = encoding.MarshalUint64(buf, uint64(n))
s := bytesutil.ToUnsafeString(buf[bufLen:])
m[s] = struct{}{}
}
fi.timestampISO8601Values = m
}
func (fi *filterIn) applyToBlockResult(br *blockResult, bm *bitmap) {
if len(fi.values) == 0 {
bm.resetBits()
return
}
c := br.getColumnByName(fi.fieldName)
if c.isConst {
stringValues := fi.getStringValues()
v := c.valuesEncoded[0]
if _, ok := stringValues[v]; !ok {
bm.resetBits()
}
return
}
if c.isTime {
fi.matchColumnByStringValues(br, bm, c)
return
}
switch c.valueType {
case valueTypeString:
fi.matchColumnByStringValues(br, bm, c)
case valueTypeDict:
stringValues := fi.getStringValues()
bb := bbPool.Get()
for _, v := range c.dictValues {
c := byte(0)
if _, ok := stringValues[v]; ok {
c = 1
}
bb.B = append(bb.B, c)
}
valuesEncoded := c.getValuesEncoded(br)
bm.forEachSetBit(func(idx int) bool {
n := valuesEncoded[idx][0]
return bb.B[n] == 1
})
bbPool.Put(bb)
case valueTypeUint8:
binValues := fi.getUint8Values()
matchColumnByBinValues(br, bm, c, binValues)
case valueTypeUint16:
binValues := fi.getUint16Values()
matchColumnByBinValues(br, bm, c, binValues)
case valueTypeUint32:
binValues := fi.getUint32Values()
matchColumnByBinValues(br, bm, c, binValues)
case valueTypeUint64:
binValues := fi.getUint64Values()
matchColumnByBinValues(br, bm, c, binValues)
case valueTypeFloat64:
binValues := fi.getFloat64Values()
matchColumnByBinValues(br, bm, c, binValues)
case valueTypeIPv4:
binValues := fi.getIPv4Values()
matchColumnByBinValues(br, bm, c, binValues)
case valueTypeTimestampISO8601:
binValues := fi.getTimestampISO8601Values()
matchColumnByBinValues(br, bm, c, binValues)
default:
logger.Panicf("FATAL: unknown valueType=%d", c.valueType)
}
}
func (fi *filterIn) matchColumnByStringValues(br *blockResult, bm *bitmap, c *blockResultColumn) {
stringValues := fi.getStringValues()
values := c.getValues(br)
bm.forEachSetBit(func(idx int) bool {
v := values[idx]
_, ok := stringValues[v]
return ok
})
}
func matchColumnByBinValues(br *blockResult, bm *bitmap, c *blockResultColumn, binValues map[string]struct{}) {
if len(binValues) == 0 {
bm.resetBits()
return
}
valuesEncoded := c.getValuesEncoded(br)
bm.forEachSetBit(func(idx int) bool {
v := valuesEncoded[idx]
_, ok := binValues[v]
return ok
})
}
func (fi *filterIn) applyToBlockSearch(bs *blockSearch, bm *bitmap) {
fieldName := fi.fieldName
if len(fi.values) == 0 {
bm.resetBits()
return
}
v := bs.csh.getConstColumnValue(fieldName)
if v != "" {
stringValues := fi.getStringValues()
if _, ok := stringValues[v]; !ok {
bm.resetBits()
}
return
}
// Verify whether filter matches other columns
ch := bs.csh.getColumnHeader(fieldName)
if ch == nil {
// Fast path - there are no matching columns.
// It matches anything only for empty phrase.
stringValues := fi.getStringValues()
if _, ok := stringValues[""]; !ok {
bm.resetBits()
}
return
}
tokenSets := fi.getTokenSets()
switch ch.valueType {
case valueTypeString:
stringValues := fi.getStringValues()
matchAnyValue(bs, ch, bm, stringValues, tokenSets)
case valueTypeDict:
stringValues := fi.getStringValues()
matchValuesDictByAnyValue(bs, ch, bm, stringValues)
case valueTypeUint8:
binValues := fi.getUint8Values()
matchAnyValue(bs, ch, bm, binValues, tokenSets)
case valueTypeUint16:
binValues := fi.getUint16Values()
matchAnyValue(bs, ch, bm, binValues, tokenSets)
case valueTypeUint32:
binValues := fi.getUint32Values()
matchAnyValue(bs, ch, bm, binValues, tokenSets)
case valueTypeUint64:
binValues := fi.getUint64Values()
matchAnyValue(bs, ch, bm, binValues, tokenSets)
case valueTypeFloat64:
binValues := fi.getFloat64Values()
matchAnyValue(bs, ch, bm, binValues, tokenSets)
case valueTypeIPv4:
binValues := fi.getIPv4Values()
matchAnyValue(bs, ch, bm, binValues, tokenSets)
case valueTypeTimestampISO8601:
binValues := fi.getTimestampISO8601Values()
matchAnyValue(bs, ch, bm, binValues, tokenSets)
default:
logger.Panicf("FATAL: %s: unknown valueType=%d", bs.partPath(), ch.valueType)
}
}
func matchAnyValue(bs *blockSearch, ch *columnHeader, bm *bitmap, values map[string]struct{}, tokenSets [][]string) {
if len(values) == 0 {
bm.resetBits()
return
}
if !matchBloomFilterAnyTokenSet(bs, ch, tokenSets) {
bm.resetBits()
return
}
visitValues(bs, ch, bm, func(v string) bool {
_, ok := values[v]
return ok
})
}
func matchBloomFilterAnyTokenSet(bs *blockSearch, ch *columnHeader, tokenSets [][]string) bool {
if len(tokenSets) == 0 {
return false
}
if len(tokenSets) > maxTokenSetsToInit || uint64(len(tokenSets)) > 10*bs.bsw.bh.rowsCount {
// It is faster to match every row in the block against all the values
// instead of using bloom filter for too big number of tokenSets.
return true
}
bf := bs.getBloomFilterForColumn(ch)
for _, tokens := range tokenSets {
if bf.containsAll(tokens) {
return true
}
}
return false
}
func matchValuesDictByAnyValue(bs *blockSearch, ch *columnHeader, bm *bitmap, values map[string]struct{}) {
bb := bbPool.Get()
for _, v := range ch.valuesDict.values {
c := byte(0)
if _, ok := values[v]; ok {
c = 1
}
bb.B = append(bb.B, c)
}
matchEncodedValuesDict(bs, ch, bm, bb.B)
bbPool.Put(bb)
}