undolog

type BranchUndoLog struct {
	Xid         string
	BranchID    int64
	SqlUndoLogs []*SqlUndoLog
}

type PbBranchUndoLog struct {
	Xid         string          `protobuf:"bytes,1,opt,name=Xid,proto3" json:"Xid,omitempty"`
	BranchID    int64           `protobuf:"varint,2,opt,name=BranchID,proto3" json:"BranchID,omitempty"`
	SqlUndoLogs []*PbSqlUndoLog `protobuf:"bytes,3,rep,name=SqlUndoLogs,proto3" json:"SqlUndoLogs,omitempty"`
	// contains filtered or unexported fields
}

type PbField struct {
	Name    string `protobuf:"bytes,1,opt,name=Name,proto3" json:"Name,omitempty"`
	KeyType int32  `protobuf:"varint,2,opt,name=KeyType,proto3" json:"KeyType,omitempty"`
	Type    int32  `protobuf:"zigzag32,3,opt,name=Type,proto3" json:"Type,omitempty"`
	Value   []byte `protobuf:"bytes,4,opt,name=Value,proto3" json:"Value,omitempty"`
	// contains filtered or unexported fields
}

type PbRow struct {
	Fields []*PbField `protobuf:"bytes,1,rep,name=Fields,proto3" json:"Fields,omitempty"`
	// contains filtered or unexported fields
}

type PbSqlUndoLog struct {
	IsBinary    bool            `protobuf:"varint,1,opt,name=IsBinary,proto3" json:"IsBinary,omitempty"`
	SqlType     int32           `protobuf:"varint,2,opt,name=SqlType,proto3" json:"SqlType,omitempty"`
	SchemaName  string          `protobuf:"bytes,3,opt,name=SchemaName,proto3" json:"SchemaName,omitempty"`
	TableName   string          `protobuf:"bytes,4,opt,name=TableName,proto3" json:"TableName,omitempty"`
	LockKey     string          `protobuf:"bytes,5,opt,name=LockKey,proto3" json:"LockKey,omitempty"`
	BeforeImage *PbTableRecords `protobuf:"bytes,6,opt,name=BeforeImage,proto3" json:"BeforeImage,omitempty"`
	AfterImage  *PbTableRecords `protobuf:"bytes,7,opt,name=AfterImage,proto3" json:"AfterImage,omitempty"`
	// contains filtered or unexported fields
}

type PbTableRecords struct {
	TableName string   `protobuf:"bytes,1,opt,name=TableName,proto3" json:"TableName,omitempty"`
	Rows      []*PbRow `protobuf:"bytes,2,rep,name=Rows,proto3" json:"Rows,omitempty"`
	// contains filtered or unexported fields
}

type ProtoBufUndoLogParser struct {
}

type SqlUndoLog struct {
	// IsBinary binary protocol or text protocol, com_stmt_execute corresponds to
	// binary protocol (prepared statement), com_query corresponds to text protocol
	// (text statement).
	IsBinary bool
	// SqlType insert、delete、update
	SqlType     constant.SQLType
	SchemaName  string
	TableName   string
	LockKey     string
	BeforeImage *schema.TableRecords
	AfterImage  *schema.TableRecords
}

type UndoLogParser interface {
	GetName() string

	// return the default content if undo log is empty
	GetDefaultContent() []byte

	Encode(branchUndoLog *BranchUndoLog) []byte

	Decode(data []byte) *BranchUndoLog

	EncodeSqlUndoLog(undoLog *SqlUndoLog) []byte

	DecodeSqlUndoLog(data []byte) *SqlUndoLog
}