signoz/pkg/telemetrymetadata/condition_builder.go

125 lines
3.7 KiB
Go

package telemetrymetadata
import (
"context"
"fmt"
schema "github.com/SigNoz/signoz-otel-collector/cmd/signozschemamigrator/schema_migrator"
qbtypes "github.com/SigNoz/signoz/pkg/types/querybuildertypes/querybuildertypesv5"
"github.com/SigNoz/signoz/pkg/types/telemetrytypes"
"github.com/huandu/go-sqlbuilder"
)
type conditionBuilder struct {
fm qbtypes.FieldMapper
}
func NewConditionBuilder(fm qbtypes.FieldMapper) *conditionBuilder {
return &conditionBuilder{fm: fm}
}
func (c *conditionBuilder) ConditionFor(
ctx context.Context,
key *telemetrytypes.TelemetryFieldKey,
operator qbtypes.FilterOperator,
value any,
sb *sqlbuilder.SelectBuilder,
) (string, error) {
column, err := c.fm.ColumnFor(ctx, key)
if err != nil {
// if we don't have a column, we can't build a condition for related values
return "", nil
}
tblFieldName, err := c.fm.FieldFor(ctx, key)
if err != nil {
// if we don't have a table field name, we can't build a condition for related values
return "", nil
}
if key.FieldDataType != telemetrytypes.FieldDataTypeString &&
key.FieldDataType != telemetrytypes.FieldDataTypeUnspecified {
// if the field data type is not string, we can't build a condition for related values
return "", nil
}
tblFieldName, value = telemetrytypes.DataTypeCollisionHandledFieldName(key, value, tblFieldName)
// key must exists to apply main filter
expr := `if(mapContains(%s, %s), %s, true)`
var cond string
// regular operators
switch operator {
// regular operators
case qbtypes.FilterOperatorEqual:
cond = sb.E(tblFieldName, value)
case qbtypes.FilterOperatorNotEqual:
cond = sb.NE(tblFieldName, value)
// like and not like
case qbtypes.FilterOperatorLike:
cond = sb.Like(tblFieldName, value)
case qbtypes.FilterOperatorNotLike:
cond = sb.NotLike(tblFieldName, value)
case qbtypes.FilterOperatorILike:
cond = sb.ILike(tblFieldName, value)
case qbtypes.FilterOperatorNotILike:
cond = sb.NotILike(tblFieldName, value)
case qbtypes.FilterOperatorContains:
cond = sb.ILike(tblFieldName, fmt.Sprintf("%%%s%%", value))
case qbtypes.FilterOperatorNotContains:
cond = sb.NotILike(tblFieldName, fmt.Sprintf("%%%s%%", value))
case qbtypes.FilterOperatorRegexp:
cond = fmt.Sprintf(`match(%s, %s)`, tblFieldName, sb.Var(value))
case qbtypes.FilterOperatorNotRegexp:
cond = fmt.Sprintf(`NOT match(%s, %s)`, tblFieldName, sb.Var(value))
// in and not in
case qbtypes.FilterOperatorIn:
values, ok := value.([]any)
if !ok {
return "", qbtypes.ErrInValues
}
// instead of using IN, we use `=` + `OR` to make use of index
conditions := []string{}
for _, value := range values {
conditions = append(conditions, sb.E(tblFieldName, value))
}
cond = sb.Or(conditions...)
case qbtypes.FilterOperatorNotIn:
values, ok := value.([]any)
if !ok {
return "", qbtypes.ErrInValues
}
// instead of using NOT IN, we use `!=` + `AND` to make use of index
conditions := []string{}
for _, value := range values {
conditions = append(conditions, sb.NE(tblFieldName, value))
}
cond = sb.And(conditions...)
// exists and not exists
// in the query builder, `exists` and `not exists` are used for
// key membership checks, so depending on the column type, the condition changes
case qbtypes.FilterOperatorExists, qbtypes.FilterOperatorNotExists:
switch column.Type {
case schema.MapColumnType{
KeyType: schema.LowCardinalityColumnType{ElementType: schema.ColumnTypeString},
ValueType: schema.ColumnTypeString,
}:
leftOperand := fmt.Sprintf("mapContains(%s, '%s')", column.Name, key.Name)
if operator == qbtypes.FilterOperatorExists {
cond = sb.E(leftOperand, true)
} else {
cond = sb.NE(leftOperand, true)
}
}
}
return fmt.Sprintf(expr, column.Name, sb.Var(key.Name), cond), nil
}