You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
280 lines
8.2 KiB
280 lines
8.2 KiB
package binding
|
|
|
|
import (
|
|
"encoding/base64"
|
|
"errors"
|
|
"fmt"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
|
|
"google.golang.org/genproto/protobuf/field_mask"
|
|
"google.golang.org/protobuf/proto"
|
|
"google.golang.org/protobuf/reflect/protoreflect"
|
|
"google.golang.org/protobuf/reflect/protoregistry"
|
|
"google.golang.org/protobuf/types/known/durationpb"
|
|
"google.golang.org/protobuf/types/known/timestamppb"
|
|
"google.golang.org/protobuf/types/known/wrapperspb"
|
|
)
|
|
|
|
// MapProto sets a value in a nested Protobuf structure.
|
|
// Deprecated: use BindValue instead.
|
|
func MapProto(msg proto.Message, values map[string]string) error {
|
|
for key, value := range values {
|
|
if err := populateFieldValues(msg.ProtoReflect(), strings.Split(key, "."), []string{value}); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func mapProto(msg proto.Message, values map[string][]string) error {
|
|
for key, values := range values {
|
|
if err := populateFieldValues(msg.ProtoReflect(), strings.Split(key, "."), values); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func populateFieldValues(v protoreflect.Message, fieldPath []string, values []string) error {
|
|
if len(fieldPath) < 1 {
|
|
return errors.New("no field path")
|
|
}
|
|
if len(values) < 1 {
|
|
return errors.New("no value provided")
|
|
}
|
|
var fd protoreflect.FieldDescriptor
|
|
for i, fieldName := range fieldPath {
|
|
fields := v.Descriptor().Fields()
|
|
|
|
if fd = fields.ByName(protoreflect.Name(fieldName)); fd == nil {
|
|
fd = fields.ByJSONName(fieldName)
|
|
if fd == nil {
|
|
// ignore unexpected field.
|
|
return nil
|
|
}
|
|
}
|
|
|
|
if i == len(fieldPath)-1 {
|
|
break
|
|
}
|
|
|
|
if fd.Message() == nil || fd.Cardinality() == protoreflect.Repeated {
|
|
return fmt.Errorf("invalid path: %q is not a message", fieldName)
|
|
}
|
|
|
|
v = v.Mutable(fd).Message()
|
|
}
|
|
if of := fd.ContainingOneof(); of != nil {
|
|
if f := v.WhichOneof(of); f != nil {
|
|
return fmt.Errorf("field already set for oneof %q", of.FullName().Name())
|
|
}
|
|
}
|
|
switch {
|
|
case fd.IsList():
|
|
return populateRepeatedField(fd, v.Mutable(fd).List(), values)
|
|
case fd.IsMap():
|
|
return populateMapField(fd, v.Mutable(fd).Map(), values)
|
|
}
|
|
if len(values) > 1 {
|
|
return fmt.Errorf("too many values for field %q: %s", fd.FullName().Name(), strings.Join(values, ", "))
|
|
}
|
|
return populateField(fd, v, values[0])
|
|
}
|
|
|
|
func populateField(fd protoreflect.FieldDescriptor, v protoreflect.Message, value string) error {
|
|
val, err := parseField(fd, value)
|
|
if err != nil {
|
|
return fmt.Errorf("parsing field %q: %w", fd.FullName().Name(), err)
|
|
}
|
|
v.Set(fd, val)
|
|
return nil
|
|
}
|
|
|
|
func populateRepeatedField(fd protoreflect.FieldDescriptor, list protoreflect.List, values []string) error {
|
|
for _, value := range values {
|
|
v, err := parseField(fd, value)
|
|
if err != nil {
|
|
return fmt.Errorf("parsing list %q: %w", fd.FullName().Name(), err)
|
|
}
|
|
list.Append(v)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func populateMapField(fd protoreflect.FieldDescriptor, mp protoreflect.Map, values []string) error {
|
|
if len(values) != 2 {
|
|
return fmt.Errorf("more than one value provided for key %q in map %q", values[0], fd.FullName())
|
|
}
|
|
key, err := parseField(fd.MapKey(), values[0])
|
|
if err != nil {
|
|
return fmt.Errorf("parsing map key %q: %w", fd.FullName().Name(), err)
|
|
}
|
|
value, err := parseField(fd.MapValue(), values[1])
|
|
if err != nil {
|
|
return fmt.Errorf("parsing map value %q: %w", fd.FullName().Name(), err)
|
|
}
|
|
mp.Set(key.MapKey(), value)
|
|
return nil
|
|
}
|
|
|
|
func parseField(fd protoreflect.FieldDescriptor, value string) (protoreflect.Value, error) {
|
|
switch fd.Kind() {
|
|
case protoreflect.BoolKind:
|
|
v, err := strconv.ParseBool(value)
|
|
if err != nil {
|
|
return protoreflect.Value{}, err
|
|
}
|
|
return protoreflect.ValueOfBool(v), nil
|
|
case protoreflect.EnumKind:
|
|
enum, err := protoregistry.GlobalTypes.FindEnumByName(fd.Enum().FullName())
|
|
switch {
|
|
case errors.Is(err, protoregistry.NotFound):
|
|
return protoreflect.Value{}, fmt.Errorf("enum %q is not registered", fd.Enum().FullName())
|
|
case err != nil:
|
|
return protoreflect.Value{}, fmt.Errorf("failed to look up enum: %w", err)
|
|
}
|
|
v := enum.Descriptor().Values().ByName(protoreflect.Name(value))
|
|
if v == nil {
|
|
i, err := strconv.ParseInt(value, 10, 32)
|
|
if err != nil {
|
|
return protoreflect.Value{}, fmt.Errorf("%q is not a valid value", value)
|
|
}
|
|
v = enum.Descriptor().Values().ByNumber(protoreflect.EnumNumber(i))
|
|
if v == nil {
|
|
return protoreflect.Value{}, fmt.Errorf("%q is not a valid value", value)
|
|
}
|
|
}
|
|
return protoreflect.ValueOfEnum(v.Number()), nil
|
|
case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind:
|
|
v, err := strconv.ParseInt(value, 10, 32)
|
|
if err != nil {
|
|
return protoreflect.Value{}, err
|
|
}
|
|
return protoreflect.ValueOfInt32(int32(v)), nil
|
|
case protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Sfixed64Kind:
|
|
v, err := strconv.ParseInt(value, 10, 64)
|
|
if err != nil {
|
|
return protoreflect.Value{}, err
|
|
}
|
|
return protoreflect.ValueOfInt64(v), nil
|
|
case protoreflect.Uint32Kind, protoreflect.Fixed32Kind:
|
|
v, err := strconv.ParseUint(value, 10, 32)
|
|
if err != nil {
|
|
return protoreflect.Value{}, err
|
|
}
|
|
return protoreflect.ValueOfUint32(uint32(v)), nil
|
|
case protoreflect.Uint64Kind, protoreflect.Fixed64Kind:
|
|
v, err := strconv.ParseUint(value, 10, 64)
|
|
if err != nil {
|
|
return protoreflect.Value{}, err
|
|
}
|
|
return protoreflect.ValueOfUint64(v), nil
|
|
case protoreflect.FloatKind:
|
|
v, err := strconv.ParseFloat(value, 32)
|
|
if err != nil {
|
|
return protoreflect.Value{}, err
|
|
}
|
|
return protoreflect.ValueOfFloat32(float32(v)), nil
|
|
case protoreflect.DoubleKind:
|
|
v, err := strconv.ParseFloat(value, 64)
|
|
if err != nil {
|
|
return protoreflect.Value{}, err
|
|
}
|
|
return protoreflect.ValueOfFloat64(v), nil
|
|
case protoreflect.StringKind:
|
|
return protoreflect.ValueOfString(value), nil
|
|
case protoreflect.BytesKind:
|
|
v, err := base64.StdEncoding.DecodeString(value)
|
|
if err != nil {
|
|
return protoreflect.Value{}, err
|
|
}
|
|
return protoreflect.ValueOfBytes(v), nil
|
|
case protoreflect.MessageKind, protoreflect.GroupKind:
|
|
return parseMessage(fd.Message(), value)
|
|
default:
|
|
panic(fmt.Sprintf("unknown field kind: %v", fd.Kind()))
|
|
}
|
|
}
|
|
|
|
func parseMessage(md protoreflect.MessageDescriptor, value string) (protoreflect.Value, error) {
|
|
var msg proto.Message
|
|
switch md.FullName() {
|
|
case "google.protobuf.Timestamp":
|
|
if value == "null" {
|
|
break
|
|
}
|
|
t, err := time.Parse(time.RFC3339Nano, value)
|
|
if err != nil {
|
|
return protoreflect.Value{}, err
|
|
}
|
|
msg = timestamppb.New(t)
|
|
case "google.protobuf.Duration":
|
|
if value == "null" {
|
|
break
|
|
}
|
|
d, err := time.ParseDuration(value)
|
|
if err != nil {
|
|
return protoreflect.Value{}, err
|
|
}
|
|
msg = durationpb.New(d)
|
|
case "google.protobuf.DoubleValue":
|
|
v, err := strconv.ParseFloat(value, 64)
|
|
if err != nil {
|
|
return protoreflect.Value{}, err
|
|
}
|
|
msg = wrapperspb.Double(v)
|
|
case "google.protobuf.FloatValue":
|
|
v, err := strconv.ParseFloat(value, 32)
|
|
if err != nil {
|
|
return protoreflect.Value{}, err
|
|
}
|
|
msg = wrapperspb.Float(float32(v))
|
|
case "google.protobuf.Int64Value":
|
|
v, err := strconv.ParseInt(value, 10, 64)
|
|
if err != nil {
|
|
return protoreflect.Value{}, err
|
|
}
|
|
msg = wrapperspb.Int64(v)
|
|
case "google.protobuf.Int32Value":
|
|
v, err := strconv.ParseInt(value, 10, 32)
|
|
if err != nil {
|
|
return protoreflect.Value{}, err
|
|
}
|
|
msg = wrapperspb.Int32(int32(v))
|
|
case "google.protobuf.UInt64Value":
|
|
v, err := strconv.ParseUint(value, 10, 64)
|
|
if err != nil {
|
|
return protoreflect.Value{}, err
|
|
}
|
|
msg = wrapperspb.UInt64(v)
|
|
case "google.protobuf.UInt32Value":
|
|
v, err := strconv.ParseUint(value, 10, 32)
|
|
if err != nil {
|
|
return protoreflect.Value{}, err
|
|
}
|
|
msg = wrapperspb.UInt32(uint32(v))
|
|
case "google.protobuf.BoolValue":
|
|
v, err := strconv.ParseBool(value)
|
|
if err != nil {
|
|
return protoreflect.Value{}, err
|
|
}
|
|
msg = wrapperspb.Bool(v)
|
|
case "google.protobuf.StringValue":
|
|
msg = wrapperspb.String(value)
|
|
case "google.protobuf.BytesValue":
|
|
v, err := base64.StdEncoding.DecodeString(value)
|
|
if err != nil {
|
|
return protoreflect.Value{}, err
|
|
}
|
|
msg = wrapperspb.Bytes(v)
|
|
case "google.protobuf.FieldMask":
|
|
fm := &field_mask.FieldMask{}
|
|
fm.Paths = append(fm.Paths, strings.Split(value, ",")...)
|
|
msg = fm
|
|
default:
|
|
return protoreflect.Value{}, fmt.Errorf("unsupported message type: %q", string(md.FullName()))
|
|
}
|
|
return protoreflect.ValueOfMessage(msg.ProtoReflect()), nil
|
|
}
|
|
|