package pgproto3 import ( "bytes" "encoding/json" "github.com/jackc/pgx/v5/internal/pgio" ) type CopyFail struct { Message string } // Frontend identifies this message as sendable by a PostgreSQL frontend. func (*CopyFail) Frontend() {} // 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 *CopyFail) Decode(src []byte) error { idx := bytes.IndexByte(src, 0) if idx != len(src)-1 { return &invalidMessageFormatErr{messageType: "CopyFail"} } dst.Message = string(src[:idx]) return nil } // Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length. func (src *CopyFail) Encode(dst []byte) []byte { dst = append(dst, 'f') sp := len(dst) dst = pgio.AppendInt32(dst, -1) dst = append(dst, src.Message...) dst = append(dst, 0) pgio.SetInt32(dst[sp:], int32(len(dst[sp:]))) return dst } // MarshalJSON implements encoding/json.Marshaler. func (src CopyFail) MarshalJSON() ([]byte, error) { return json.Marshal(struct { Type string Message string }{ Type: "CopyFail", Message: src.Message, }) }