package pgproto3 import ( "bytes" "encoding/json" "github.com/jackc/pgx/v5/internal/pgio" ) type ParameterStatus struct { Name string Value string } // Backend identifies this message as sendable by the PostgreSQL backend. func (*ParameterStatus) Backend() {} // Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message // type identifier and 4 byte message length. func (dst *ParameterStatus) Decode(src []byte) error { buf := bytes.NewBuffer(src) b, err := buf.ReadBytes(0) if err != nil { return err } name := string(b[:len(b)-1]) b, err = buf.ReadBytes(0) if err != nil { return err } value := string(b[:len(b)-1]) *dst = ParameterStatus{Name: name, Value: value} return nil } // Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length. func (src *ParameterStatus) Encode(dst []byte) []byte { dst = append(dst, 'S') sp := len(dst) dst = pgio.AppendInt32(dst, -1) dst = append(dst, src.Name...) dst = append(dst, 0) dst = append(dst, src.Value...) dst = append(dst, 0) pgio.SetInt32(dst[sp:], int32(len(dst[sp:]))) return dst } // MarshalJSON implements encoding/json.Marshaler. func (ps ParameterStatus) MarshalJSON() ([]byte, error) { return json.Marshal(struct { Type string Name string Value string }{ Type: "ParameterStatus", Name: ps.Name, Value: ps.Value, }) }