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proto.go
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proto.go
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package query
import (
"fmt"
"github.com/xichen2020/eventdb/calculation"
"github.com/xichen2020/eventdb/filter"
"github.com/xichen2020/eventdb/generated/proto/servicepb"
xtime "github.com/xichen2020/eventdb/x/time"
m3xtime "github.com/m3db/m3/src/x/time"
)
// ToUnparsedRawQuery converts a raw query represented in protobuf to
// an unparsed raw query.
func ToUnparsedRawQuery(
q *servicepb.RawQuery,
) (UnparsedRawQuery, error) {
tu, err := ToTimeUnitPtr(q.TimeUnit)
if err != nil {
return UnparsedRawQuery{}, err
}
filterLists, err := ToFilterLists(q.Filters)
if err != nil {
return UnparsedRawQuery{}, err
}
orderByList, err := ToOrderByList(q.OrderBy)
if err != nil {
return UnparsedRawQuery{}, err
}
return UnparsedRawQuery{
Namespace: q.Namespace,
StartTime: ToInt64Ptr(q.StartTime),
EndTime: ToInt64Ptr(q.EndTime),
TimeUnit: tu,
TimeRange: ToDurationPtr(q.TimeRangeInNanos),
Filters: filterLists,
OrderBy: orderByList,
Limit: ToIntPtr(q.Limit),
}, nil
}
// ToUnparsedGroupedQuery converts a grouped query represented in protobuf to
// an unparsed grouped
func ToUnparsedGroupedQuery(
q *servicepb.GroupedQuery,
) (UnparsedGroupedQuery, error) {
tu, err := ToTimeUnitPtr(q.TimeUnit)
if err != nil {
return UnparsedGroupedQuery{}, err
}
filterLists, err := ToFilterLists(q.Filters)
if err != nil {
return UnparsedGroupedQuery{}, err
}
calculations, err := ToCalculations(q.Calculations)
if err != nil {
return UnparsedGroupedQuery{}, err
}
orderByList, err := ToOrderByList(q.OrderBy)
if err != nil {
return UnparsedGroupedQuery{}, err
}
return UnparsedGroupedQuery{
Namespace: q.Namespace,
StartTime: ToInt64Ptr(q.StartTime),
EndTime: ToInt64Ptr(q.EndTime),
TimeUnit: tu,
TimeRange: ToDurationPtr(q.TimeRangeInNanos),
Filters: filterLists,
GroupBy: q.GroupBy,
Calculations: calculations,
OrderBy: orderByList,
Limit: ToIntPtr(q.Limit),
}, nil
}
// ToUnparsedTimeBucketQuery converts a time bucket query represented in protobuf to
// an unparsed time bucket
func ToUnparsedTimeBucketQuery(
q *servicepb.TimeBucketQuery,
) (UnparsedTimeBucketQuery, error) {
tu, err := ToTimeUnitPtr(q.TimeUnit)
if err != nil {
return UnparsedTimeBucketQuery{}, err
}
filterLists, err := ToFilterLists(q.Filters)
if err != nil {
return UnparsedTimeBucketQuery{}, err
}
granularity := xtime.Duration(q.TimeGranularityInNanos)
return UnparsedTimeBucketQuery{
Namespace: q.Namespace,
StartTime: ToInt64Ptr(q.StartTime),
EndTime: ToInt64Ptr(q.EndTime),
TimeUnit: tu,
TimeRange: ToDurationPtr(q.TimeRangeInNanos),
TimeGranularity: &granularity,
Filters: filterLists,
}, nil
}
// ToIntPtr converts an optional int64 in protobuf to an *int.
func ToIntPtr(pbValue servicepb.OptionalInt64) *int {
if pbValue.GetNoValue() {
return nil
}
v := int(pbValue.GetData())
return &v
}
// ToInt64Ptr converts an optional int64 in protobuf to an *int64.
func ToInt64Ptr(pbValue servicepb.OptionalInt64) *int64 {
if pbValue.GetNoValue() {
return nil
}
v := pbValue.GetData()
return &v
}
// ToDurationPtr converts an optional int64 in protobuf to a time duration pointer.
func ToDurationPtr(pbTimeNanos servicepb.OptionalInt64) *xtime.Duration {
if pbTimeNanos.GetNoValue() {
return nil
}
dur := xtime.Duration(pbTimeNanos.GetData())
return &dur
}
// ToTimeUnitPtr converts an optional time unit in protobuf to an internal time unit pointer.
func ToTimeUnitPtr(pbTimeUnit servicepb.OptionalTimeUnit) (*xtime.Unit, error) {
if pbTimeUnit.GetNoValue() {
return nil, nil
}
tu, err := ToTimeUnit(pbTimeUnit.GetData())
if err != nil {
return nil, err
}
return &tu, nil
}
// ToTimeUnit converts a time unit in protobuf to an internal time unit.
func ToTimeUnit(pbTimeUnit servicepb.TimeUnit) (xtime.Unit, error) {
switch pbTimeUnit {
case servicepb.TimeUnit_SECOND:
return xtime.Unit(m3xtime.Second), nil
case servicepb.TimeUnit_MILLISECOND:
return xtime.Unit(m3xtime.Millisecond), nil
case servicepb.TimeUnit_MICROSECOND:
return xtime.Unit(m3xtime.Microsecond), nil
case servicepb.TimeUnit_NANOSECOND:
return xtime.Unit(m3xtime.Nanosecond), nil
case servicepb.TimeUnit_MINUTE:
return xtime.Unit(m3xtime.Minute), nil
case servicepb.TimeUnit_HOUR:
return xtime.Unit(m3xtime.Hour), nil
case servicepb.TimeUnit_DAY:
return xtime.Unit(m3xtime.Day), nil
case servicepb.TimeUnit_YEAR:
return xtime.Unit(m3xtime.Year), nil
default:
return 0, fmt.Errorf("invalid protobuf time unit %v", pbTimeUnit)
}
}
// ToFilterLists converts filter lists in protobuf to a list of internal filter lists.
func ToFilterLists(pbFilterLists []servicepb.FilterList) ([]RawFilterList, error) {
res := make([]RawFilterList, 0, len(pbFilterLists))
for _, pbFilterList := range pbFilterLists {
filterList, err := ToFilterList(pbFilterList)
if err != nil {
return nil, err
}
res = append(res, filterList)
}
return res, nil
}
// ToFilterList converts a filter list in protobuf to an internal filter list.
func ToFilterList(pbFilterList servicepb.FilterList) (RawFilterList, error) {
filters, err := ToFilters(pbFilterList.Filters)
if err != nil {
return RawFilterList{}, err
}
filterCombinator, err := ToFilterCombinatorPtr(pbFilterList.FilterCombinator)
if err != nil {
return RawFilterList{}, err
}
return RawFilterList{
Filters: filters,
FilterCombinator: filterCombinator,
}, nil
}
// ToFilters converts a list of filters in protobuf to an internal list of filters.
func ToFilters(pbFilters []servicepb.Filter) ([]RawFilter, error) {
filters := make([]RawFilter, 0, len(pbFilters))
for _, pbFilter := range pbFilters {
filter, err := ToFilter(pbFilter)
if err != nil {
return nil, err
}
filters = append(filters, filter)
}
return filters, nil
}
// ToFilter converts a filter in protobuf to an internal filter.
func ToFilter(pbFilter servicepb.Filter) (RawFilter, error) {
op, err := ToFilterOp(pbFilter.Op)
if err != nil {
return RawFilter{}, err
}
value, err := ToFilterValue(pbFilter.Value)
if err != nil {
return RawFilter{}, err
}
return RawFilter{
Field: pbFilter.Field,
Op: op,
Value: value,
}, nil
}
// ToFilterOp converts a filter op in protobuf to an internal filter op.
func ToFilterOp(pbFilterOp servicepb.Filter_Op) (filter.Op, error) {
switch pbFilterOp {
case servicepb.Filter_EQUALS:
return filter.Equals, nil
case servicepb.Filter_NOTEQUALS:
return filter.NotEquals, nil
case servicepb.Filter_LARGERTHAN:
return filter.LargerThan, nil
case servicepb.Filter_LARGERTHANOREQUAL:
return filter.LargerThanOrEqual, nil
case servicepb.Filter_SMALLERTHAN:
return filter.SmallerThan, nil
case servicepb.Filter_SMALLERTHANOREQUAL:
return filter.SmallerThanOrEqual, nil
case servicepb.Filter_STARTSWITH:
return filter.StartsWith, nil
case servicepb.Filter_DOESNOTSTARTWITH:
return filter.DoesNotStartWith, nil
case servicepb.Filter_ENDSWITH:
return filter.EndsWith, nil
case servicepb.Filter_DOESNOTENDWITH:
return filter.DoesNotEndWith, nil
case servicepb.Filter_CONTAINS:
return filter.Contains, nil
case servicepb.Filter_DOESNOTCONTAIN:
return filter.DoesNotContain, nil
case servicepb.Filter_ISNULL:
return filter.IsNull, nil
case servicepb.Filter_ISNOTNULL:
return filter.IsNotNull, nil
case servicepb.Filter_EXISTS:
return filter.Exists, nil
case servicepb.Filter_DOESNOTEXIST:
return filter.DoesNotExist, nil
default:
return filter.UnknownOp, fmt.Errorf("invalid protobuf filter op %v", pbFilterOp)
}
}
// ToFilterValue converts an optional filter value to an internal filter value.
func ToFilterValue(pbFilterValue servicepb.OptionalFilterValue) (interface{}, error) {
if pbFilterValue.GetNoValue() {
return nil, nil
}
fv := pbFilterValue.GetData()
switch fv.Type {
case servicepb.FilterValue_BOOL:
return fv.BoolVal, nil
case servicepb.FilterValue_NUMBER:
return fv.NumberVal, nil
case servicepb.FilterValue_STRING:
return fv.StringVal, nil
default:
return nil, fmt.Errorf("invalid protobuf filter value type %v", fv.Type)
}
}
// ToFilterCombinatorPtr converts an optional filter combinator in protobuf
// to a filter combinator pointer.
func ToFilterCombinatorPtr(
pbFilterCombinator servicepb.OptionalFilterCombinator,
) (*filter.Combinator, error) {
if pbFilterCombinator.GetNoValue() {
return nil, nil
}
var combinator filter.Combinator
pbCombinator := pbFilterCombinator.GetData()
switch pbCombinator {
case servicepb.FilterCombinator_AND:
combinator = filter.And
case servicepb.FilterCombinator_OR:
combinator = filter.Or
default:
return nil, fmt.Errorf("invalid protobuf filter combinator %v", pbCombinator)
}
return &combinator, nil
}
// ToOrderByList converts a list of orderBy clauses in protobuf to a list of
// internal orderBy objects.
func ToOrderByList(pbOrderByList []servicepb.OrderBy) ([]RawOrderBy, error) {
orderBys := make([]RawOrderBy, 0, len(pbOrderByList))
for _, pbOrderBy := range pbOrderByList {
orderBy, err := ToOrderBy(pbOrderBy)
if err != nil {
return nil, err
}
orderBys = append(orderBys, orderBy)
}
return orderBys, nil
}
// ToOrderBy converts an orderBy clauses in protobuf to an internal orderBy object.
func ToOrderBy(pbOrderBy servicepb.OrderBy) (RawOrderBy, error) {
op, err := ToCalculationOpPtr(pbOrderBy.Op)
if err != nil {
return RawOrderBy{}, err
}
order, err := ToSortOrderPtr(pbOrderBy.Order)
if err != nil {
return RawOrderBy{}, err
}
return RawOrderBy{
Field: ToStringPtr(pbOrderBy.Field),
Op: op,
Order: order,
}, nil
}
// ToStringPtr converts an optional string in protobuf to a string pointer.
func ToStringPtr(pbString servicepb.OptionalString) *string {
if pbString.GetNoValue() {
return nil
}
v := pbString.GetData()
return &v
}
// ToCalculations converts a list of calculation clauses in protobuf to a list of
// internal calculation objects.
func ToCalculations(pbCalculations []servicepb.Calculation) ([]RawCalculation, error) {
res := make([]RawCalculation, 0, len(pbCalculations))
for _, pbCalculation := range pbCalculations {
calc, err := ToCalculation(pbCalculation)
if err != nil {
return nil, err
}
res = append(res, calc)
}
return res, nil
}
// ToCalculation converts a calculation in protobuf to an internal calculation object.
func ToCalculation(pbCalculation servicepb.Calculation) (RawCalculation, error) {
op, err := ToCalculationOp(pbCalculation.Op)
if err != nil {
return RawCalculation{}, err
}
return RawCalculation{
Field: ToStringPtr(pbCalculation.Field),
Op: op,
}, nil
}
// ToCalculationOpPtr converts an optional calculation op in protobuf to an internal
// calculation op pointer.
func ToCalculationOpPtr(
pbCalculationOp servicepb.OptionalCalculationOp,
) (*calculation.Op, error) {
if pbCalculationOp.GetNoValue() {
return nil, nil
}
v, err := ToCalculationOp(pbCalculationOp.GetData())
if err != nil {
return nil, err
}
return &v, nil
}
// ToCalculationOp converts a calculation op in protobuf to an internal calculation op.
func ToCalculationOp(
pbCalculationOp servicepb.Calculation_Op,
) (calculation.Op, error) {
switch pbCalculationOp {
case servicepb.Calculation_COUNT:
return calculation.Count, nil
case servicepb.Calculation_SUM:
return calculation.Sum, nil
case servicepb.Calculation_AVG:
return calculation.Avg, nil
case servicepb.Calculation_MIN:
return calculation.Min, nil
case servicepb.Calculation_MAX:
return calculation.Max, nil
default:
return calculation.UnknownOp, fmt.Errorf("invalid protobuf calculation op %v", pbCalculationOp)
}
}
// ToSortOrderPtr converts an optional sort order in protobuf to an internal
// sort order pointer.
func ToSortOrderPtr(
pbSortOrder servicepb.OptionalSortOrder,
) (*SortOrder, error) {
if pbSortOrder.GetNoValue() {
return nil, nil
}
v, err := ToSortOrder(pbSortOrder.GetData())
if err != nil {
return nil, err
}
return &v, nil
}
// ToSortOrder converts a sort order in protobuf to an internal sort order.
func ToSortOrder(pbSortOrder servicepb.SortOrder) (SortOrder, error) {
switch pbSortOrder {
case servicepb.SortOrder_ASCENDING:
return Ascending, nil
case servicepb.SortOrder_DESCENDING:
return Descending, nil
default:
return UnknownSortOrder, fmt.Errorf("invalid protobuf sort order %v", pbSortOrder)
}
}