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binlogdumpgtid.go
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/
binlogdumpgtid.go
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package command
import (
"errors"
"github.com/didi/sharingan/replayer-agent/utils/protocol/pmysql/common"
"github.com/modern-go/parse"
"github.com/modern-go/parse/model"
)
// BinlogDumpGtidBody ...
type BinlogDumpGtidBody struct {
Flags int
ServerID int
BinlogFilenameLen int
BinlogFilename string
BinlogPos int
ExtraData string
}
func (p *BinlogDumpGtidBody) String() string {
data, err := json.Marshal(p)
if nil != err {
return err.Error()
}
return string(data)
}
// Map ...
func (p *BinlogDumpGtidBody) Map() model.Map {
r := make(model.Map)
r["flags"] = p.Flags
r["server_id"] = p.ServerID
r["binlog_filename_len"] = p.BinlogFilenameLen
r["binlog_filename"] = p.BinlogFilename
r["binlog_pos"] = p.BinlogPos
r["extra_data"] = p.ExtraData
return r
}
// DecodeBinlogDumpGtidReq
// doc: https://dev.mysql.com/doc/internals/en/com-binlog-dump-gtid.html
func DecodeBinlogDumpGtidReq(src *parse.Source) (*BinlogDumpGtidBody, error) {
pkLen, _ := common.GetPacketHeader(src)
if src.Error() != nil {
return nil, src.Error()
}
b := src.Read1()
if src.Error() != nil {
return nil, src.Error()
}
if b != 0x1e {
return nil, errors.New("packet isn't binlog dump gtid query")
}
resp := new(BinlogDumpGtidBody)
var err error
resp.Flags, err = common.GetIntN(src.ReadN(2), 2)
if err != nil {
return nil, err
}
resp.ServerID, err = common.GetIntN(src.ReadN(4), 4)
if err != nil {
return nil, err
}
resp.BinlogFilenameLen, err = common.GetIntN(src.ReadN(4), 4)
if err != nil {
return nil, err
}
resp.BinlogFilename = common.GetLenencString(src)
resp.BinlogPos, err = common.GetIntN(src.ReadN(8), 8)
if err != nil {
return nil, err
}
resp.ExtraData = string(src.ReadN(pkLen - 19 - len([]byte(resp.BinlogFilename))))
return resp, nil
}