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filter_string_range.go
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/
filter_string_range.go
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package logstorage
import (
"fmt"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
)
// filterStringRange matches tie given string range [minValue..maxValue)
//
// Note that the minValue is included in the range, while the maxValue isn't included in the range.
// This simplifies querying distincts log sets with string_range(A, B), string_range(B, C), etc.
//
// Example LogsQL: `fieldName:string_range(minValue, maxValue)`
type filterStringRange struct {
fieldName string
minValue string
maxValue string
}
func (fr *filterStringRange) String() string {
return fmt.Sprintf("%sstring_range(%s, %s)", quoteFieldNameIfNeeded(fr.fieldName), quoteTokenIfNeeded(fr.minValue), quoteTokenIfNeeded(fr.maxValue))
}
func (fr *filterStringRange) updateNeededFields(neededFields fieldsSet) {
neededFields.add(fr.fieldName)
}
func (fr *filterStringRange) applyToBlockResult(br *blockResult, bm *bitmap) {
minValue := fr.minValue
maxValue := fr.maxValue
if minValue > maxValue {
bm.resetBits()
return
}
applyToBlockResultGeneric(br, bm, fr.fieldName, "", func(v, _ string) bool {
return matchStringRange(v, minValue, maxValue)
})
}
func (fr *filterStringRange) applyToBlockSearch(bs *blockSearch, bm *bitmap) {
fieldName := fr.fieldName
minValue := fr.minValue
maxValue := fr.maxValue
if minValue > maxValue {
bm.resetBits()
return
}
v := bs.csh.getConstColumnValue(fieldName)
if v != "" {
if !matchStringRange(v, minValue, maxValue) {
bm.resetBits()
}
return
}
// Verify whether filter matches other columns
ch := bs.csh.getColumnHeader(fieldName)
if ch == nil {
if !matchStringRange("", minValue, maxValue) {
bm.resetBits()
}
return
}
switch ch.valueType {
case valueTypeString:
matchStringByStringRange(bs, ch, bm, minValue, maxValue)
case valueTypeDict:
matchValuesDictByStringRange(bs, ch, bm, minValue, maxValue)
case valueTypeUint8:
matchUint8ByStringRange(bs, ch, bm, minValue, maxValue)
case valueTypeUint16:
matchUint16ByStringRange(bs, ch, bm, minValue, maxValue)
case valueTypeUint32:
matchUint32ByStringRange(bs, ch, bm, minValue, maxValue)
case valueTypeUint64:
matchUint64ByStringRange(bs, ch, bm, minValue, maxValue)
case valueTypeFloat64:
matchFloat64ByStringRange(bs, ch, bm, minValue, maxValue)
case valueTypeIPv4:
matchIPv4ByStringRange(bs, ch, bm, minValue, maxValue)
case valueTypeTimestampISO8601:
matchTimestampISO8601ByStringRange(bs, ch, bm, minValue, maxValue)
default:
logger.Panicf("FATAL: %s: unknown valueType=%d", bs.partPath(), ch.valueType)
}
}
func matchTimestampISO8601ByStringRange(bs *blockSearch, ch *columnHeader, bm *bitmap, minValue, maxValue string) {
if minValue > "9" || maxValue < "0" {
bm.resetBits()
return
}
bb := bbPool.Get()
visitValues(bs, ch, bm, func(v string) bool {
s := toTimestampISO8601String(bs, bb, v)
return matchStringRange(s, minValue, maxValue)
})
bbPool.Put(bb)
}
func matchIPv4ByStringRange(bs *blockSearch, ch *columnHeader, bm *bitmap, minValue, maxValue string) {
if minValue > "9" || maxValue < "0" {
bm.resetBits()
return
}
bb := bbPool.Get()
visitValues(bs, ch, bm, func(v string) bool {
s := toIPv4String(bs, bb, v)
return matchStringRange(s, minValue, maxValue)
})
bbPool.Put(bb)
}
func matchFloat64ByStringRange(bs *blockSearch, ch *columnHeader, bm *bitmap, minValue, maxValue string) {
if minValue > "9" || maxValue < "+" {
bm.resetBits()
return
}
bb := bbPool.Get()
visitValues(bs, ch, bm, func(v string) bool {
s := toFloat64String(bs, bb, v)
return matchStringRange(s, minValue, maxValue)
})
bbPool.Put(bb)
}
func matchValuesDictByStringRange(bs *blockSearch, ch *columnHeader, bm *bitmap, minValue, maxValue string) {
bb := bbPool.Get()
for _, v := range ch.valuesDict.values {
c := byte(0)
if matchStringRange(v, minValue, maxValue) {
c = 1
}
bb.B = append(bb.B, c)
}
matchEncodedValuesDict(bs, ch, bm, bb.B)
bbPool.Put(bb)
}
func matchStringByStringRange(bs *blockSearch, ch *columnHeader, bm *bitmap, minValue, maxValue string) {
visitValues(bs, ch, bm, func(v string) bool {
return matchStringRange(v, minValue, maxValue)
})
}
func matchUint8ByStringRange(bs *blockSearch, ch *columnHeader, bm *bitmap, minValue, maxValue string) {
if minValue > "9" || maxValue < "0" {
bm.resetBits()
return
}
bb := bbPool.Get()
visitValues(bs, ch, bm, func(v string) bool {
s := toUint8String(bs, bb, v)
return matchStringRange(s, minValue, maxValue)
})
bbPool.Put(bb)
}
func matchUint16ByStringRange(bs *blockSearch, ch *columnHeader, bm *bitmap, minValue, maxValue string) {
if minValue > "9" || maxValue < "0" {
bm.resetBits()
return
}
bb := bbPool.Get()
visitValues(bs, ch, bm, func(v string) bool {
s := toUint16String(bs, bb, v)
return matchStringRange(s, minValue, maxValue)
})
bbPool.Put(bb)
}
func matchUint32ByStringRange(bs *blockSearch, ch *columnHeader, bm *bitmap, minValue, maxValue string) {
if minValue > "9" || maxValue < "0" {
bm.resetBits()
return
}
bb := bbPool.Get()
visitValues(bs, ch, bm, func(v string) bool {
s := toUint32String(bs, bb, v)
return matchStringRange(s, minValue, maxValue)
})
bbPool.Put(bb)
}
func matchUint64ByStringRange(bs *blockSearch, ch *columnHeader, bm *bitmap, minValue, maxValue string) {
if minValue > "9" || maxValue < "0" {
bm.resetBits()
return
}
bb := bbPool.Get()
visitValues(bs, ch, bm, func(v string) bool {
s := toUint64String(bs, bb, v)
return matchStringRange(s, minValue, maxValue)
})
bbPool.Put(bb)
}
func matchStringRange(s, minValue, maxValue string) bool {
return s >= minValue && s < maxValue
}