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filter_ipv4_range.go
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/
filter_ipv4_range.go
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package logstorage
import (
"fmt"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
)
// filterIPv4Range matches the given ipv4 range [minValue..maxValue].
//
// Example LogsQL: `fieldName:ipv4_range(127.0.0.1, 127.0.0.255)`
type filterIPv4Range struct {
fieldName string
minValue uint32
maxValue uint32
}
func (fr *filterIPv4Range) String() string {
minValue := marshalIPv4String(nil, fr.minValue)
maxValue := marshalIPv4String(nil, fr.maxValue)
return fmt.Sprintf("%sipv4_range(%s, %s)", quoteFieldNameIfNeeded(fr.fieldName), minValue, maxValue)
}
func (fr *filterIPv4Range) updateNeededFields(neededFields fieldsSet) {
neededFields.add(fr.fieldName)
}
func (fr *filterIPv4Range) applyToBlockResult(br *blockResult, bm *bitmap) {
minValue := fr.minValue
maxValue := fr.maxValue
if minValue > maxValue {
bm.resetBits()
return
}
c := br.getColumnByName(fr.fieldName)
if c.isConst {
v := c.valuesEncoded[0]
if !matchIPv4Range(v, minValue, maxValue) {
bm.resetBits()
}
return
}
if c.isTime {
bm.resetBits()
return
}
switch c.valueType {
case valueTypeString:
values := c.getValues(br)
bm.forEachSetBit(func(idx int) bool {
v := values[idx]
return matchIPv4Range(v, minValue, maxValue)
})
case valueTypeDict:
bb := bbPool.Get()
for _, v := range c.dictValues {
c := byte(0)
if matchIPv4Range(v, minValue, maxValue) {
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:
bm.resetBits()
case valueTypeUint16:
bm.resetBits()
case valueTypeUint32:
bm.resetBits()
case valueTypeUint64:
bm.resetBits()
case valueTypeFloat64:
bm.resetBits()
case valueTypeIPv4:
valuesEncoded := c.getValuesEncoded(br)
bm.forEachSetBit(func(idx int) bool {
ip := unmarshalIPv4(valuesEncoded[idx])
return ip >= minValue && ip <= maxValue
})
case valueTypeTimestampISO8601:
bm.resetBits()
default:
logger.Panicf("FATAL: unknown valueType=%d", c.valueType)
}
}
func (fr *filterIPv4Range) 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 !matchIPv4Range(v, minValue, maxValue) {
bm.resetBits()
}
return
}
// Verify whether filter matches other columns
ch := bs.csh.getColumnHeader(fieldName)
if ch == nil {
// Fast path - there are no matching columns.
bm.resetBits()
return
}
switch ch.valueType {
case valueTypeString:
matchStringByIPv4Range(bs, ch, bm, minValue, maxValue)
case valueTypeDict:
matchValuesDictByIPv4Range(bs, ch, bm, minValue, maxValue)
case valueTypeUint8:
bm.resetBits()
case valueTypeUint16:
bm.resetBits()
case valueTypeUint32:
bm.resetBits()
case valueTypeUint64:
bm.resetBits()
case valueTypeFloat64:
bm.resetBits()
case valueTypeIPv4:
matchIPv4ByRange(bs, ch, bm, minValue, maxValue)
case valueTypeTimestampISO8601:
bm.resetBits()
default:
logger.Panicf("FATAL: %s: unknown valueType=%d", bs.partPath(), ch.valueType)
}
}
func matchValuesDictByIPv4Range(bs *blockSearch, ch *columnHeader, bm *bitmap, minValue, maxValue uint32) {
bb := bbPool.Get()
for _, v := range ch.valuesDict.values {
c := byte(0)
if matchIPv4Range(v, minValue, maxValue) {
c = 1
}
bb.B = append(bb.B, c)
}
matchEncodedValuesDict(bs, ch, bm, bb.B)
bbPool.Put(bb)
}
func matchStringByIPv4Range(bs *blockSearch, ch *columnHeader, bm *bitmap, minValue, maxValue uint32) {
visitValues(bs, ch, bm, func(v string) bool {
return matchIPv4Range(v, minValue, maxValue)
})
}
func matchIPv4Range(s string, minValue, maxValue uint32) bool {
n, ok := tryParseIPv4(s)
if !ok {
return false
}
return n >= minValue && n <= maxValue
}
func matchIPv4ByRange(bs *blockSearch, ch *columnHeader, bm *bitmap, minValue, maxValue uint32) {
if ch.minValue > uint64(maxValue) || ch.maxValue < uint64(minValue) {
bm.resetBits()
return
}
visitValues(bs, ch, bm, func(v string) bool {
if len(v) != 4 {
logger.Panicf("FATAL: %s: unexpected length for binary representation of IPv4: got %d; want 4", bs.partPath(), len(v))
}
n := unmarshalIPv4(v)
return n >= minValue && n <= maxValue
})
}