frostfs-api-go/pkg/object/search.go
Alex Vanin 79c76e87e4 [#209] object: Remove childfree search attribute
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
2020-11-26 11:56:30 +03:00

234 lines
4.9 KiB
Go

package object
import (
"fmt"
"github.com/nspcc-dev/neofs-api-go/pkg"
"github.com/nspcc-dev/neofs-api-go/pkg/container"
"github.com/nspcc-dev/neofs-api-go/pkg/owner"
v2object "github.com/nspcc-dev/neofs-api-go/v2/object"
)
// SearchMatchType indicates match operation on specified header.
type SearchMatchType uint32
const (
MatchUnknown SearchMatchType = iota
MatchStringEqual
)
func (m SearchMatchType) ToV2() v2object.MatchType {
switch m {
case MatchStringEqual:
return v2object.MatchStringEqual
default:
return v2object.MatchUnknown
}
}
func SearchMatchFromV2(t v2object.MatchType) (m SearchMatchType) {
switch t {
case v2object.MatchStringEqual:
m = MatchStringEqual
default:
m = MatchUnknown
}
return m
}
type SearchFilter struct {
header filterKey
value fmt.Stringer
op SearchMatchType
}
type staticStringer string
type filterKey struct {
typ filterKeyType
str string
}
// enumeration of reserved filter keys.
type filterKeyType int
type boolStringer bool
type SearchFilters []SearchFilter
const (
_ filterKeyType = iota
fKeyVersion
fKeyObjectID
fKeyContainerID
fKeyOwnerID
fKeyCreationEpoch
fKeyPayloadLength
fKeyPayloadHash
fKeyType
fKeyHomomorphicHash
fKeyParent
fKeyPropRoot
fKeyPropPhy
)
func (k filterKey) String() string {
switch k.typ {
default:
return k.str
case fKeyVersion:
return v2object.FilterHeaderVersion
case fKeyObjectID:
return v2object.FilterHeaderObjectID
case fKeyContainerID:
return v2object.FilterHeaderContainerID
case fKeyOwnerID:
return v2object.FilterHeaderOwnerID
case fKeyCreationEpoch:
return v2object.FilterHeaderCreationEpoch
case fKeyPayloadLength:
return v2object.FilterHeaderPayloadLength
case fKeyPayloadHash:
return v2object.FilterHeaderPayloadHash
case fKeyType:
return v2object.FilterHeaderObjectType
case fKeyHomomorphicHash:
return v2object.FilterHeaderHomomorphicHash
case fKeyParent:
return v2object.FilterHeaderParent
case fKeyPropRoot:
return v2object.FilterPropertyRoot
case fKeyPropPhy:
return v2object.FilterPropertyPhy
}
}
func (s staticStringer) String() string {
return string(s)
}
func (s boolStringer) String() string {
if s {
return v2object.BooleanPropertyValueTrue
}
return v2object.BooleanPropertyValueFalse
}
func (f *SearchFilter) Header() string {
return f.header.String()
}
func (f *SearchFilter) Value() string {
return f.value.String()
}
func (f *SearchFilter) Operation() SearchMatchType {
return f.op
}
func NewSearchFilters() SearchFilters {
return SearchFilters{}
}
func NewSearchFiltersFromV2(v2 []*v2object.SearchFilter) SearchFilters {
filters := make(SearchFilters, 0, len(v2))
for i := range v2 {
if v2[i] == nil {
continue
}
filters.AddFilter(
v2[i].GetKey(),
v2[i].GetValue(),
SearchMatchFromV2(v2[i].GetMatchType()),
)
}
return filters
}
func (f *SearchFilters) addFilter(op SearchMatchType, keyTyp filterKeyType, key string, val fmt.Stringer) {
if *f == nil {
*f = make(SearchFilters, 0, 1)
}
*f = append(*f, SearchFilter{
header: filterKey{
typ: keyTyp,
str: key,
},
value: val,
op: op,
})
}
func (f *SearchFilters) AddFilter(header, value string, op SearchMatchType) {
f.addFilter(op, 0, header, staticStringer(value))
}
func (f *SearchFilters) addReservedFilter(op SearchMatchType, keyTyp filterKeyType, val fmt.Stringer) {
f.addFilter(op, keyTyp, "", val)
}
// addFlagFilters adds filters that works like flags: they don't need to have
// specific match type or value. They processed by NeoFS nodes by the fact
// of presence in search query. E.g.: PHY, ROOT.
func (f *SearchFilters) addFlagFilter(keyTyp filterKeyType) {
f.addFilter(MatchUnknown, keyTyp, "", staticStringer(""))
}
func (f *SearchFilters) AddObjectVersionFilter(op SearchMatchType, v *pkg.Version) {
f.addReservedFilter(op, fKeyVersion, v)
}
func (f *SearchFilters) AddObjectContainerIDFilter(m SearchMatchType, id *container.ID) {
f.addReservedFilter(m, fKeyContainerID, id)
}
func (f *SearchFilters) AddObjectOwnerIDFilter(m SearchMatchType, id *owner.ID) {
f.addReservedFilter(m, fKeyOwnerID, id)
}
func (f SearchFilters) ToV2() []*v2object.SearchFilter {
result := make([]*v2object.SearchFilter, 0, len(f))
for i := range f {
v2 := new(v2object.SearchFilter)
v2.SetKey(f[i].header.String())
v2.SetValue(f[i].value.String())
v2.SetMatchType(f[i].op.ToV2())
result = append(result, v2)
}
return result
}
func (f *SearchFilters) addRootFilter() {
f.addFlagFilter(fKeyPropRoot)
}
func (f *SearchFilters) AddRootFilter() {
f.addRootFilter()
}
func (f *SearchFilters) addPhyFilter() {
f.addFlagFilter(fKeyPropPhy)
}
func (f *SearchFilters) AddPhyFilter() {
f.addPhyFilter()
}
func (f *SearchFilters) AddParentIDFilter(m SearchMatchType, id *ID) {
f.addReservedFilter(m, fKeyParent, id)
}
// AddObjectIDFilter adds filter by object identifier.
func (f *SearchFilters) AddObjectIDFilter(m SearchMatchType, id *ID) {
f.addReservedFilter(m, fKeyObjectID, id)
}