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Add support for rowsEventDecodeFunc in Canal #939

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Add support for rowsEventDecodeFunc in Canal #939

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9 changes: 7 additions & 2 deletions canal/canal.go
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Original file line number Diff line number Diff line change
Expand Up @@ -463,7 +463,12 @@ func (c *Canal) prepareSyncer() error {
Dialer: c.cfg.Dialer,
Localhost: c.cfg.Localhost,
EventCacheCount: c.cfg.EventCacheCount,
RowsEventDecodeFunc: func(event *replication.RowsEvent, data []byte) error {
}

if c.cfg.RowsEventDecodeFunc != nil {
cfg.RowsEventDecodeFunc = c.cfg.RowsEventDecodeFunc
} else {
cfg.RowsEventDecodeFunc = func(event *replication.RowsEvent, data []byte) error {
pos, err := event.DecodeHeader(data)
if err != nil {
return err
Expand All @@ -475,7 +480,7 @@ func (c *Canal) prepareSyncer() error {
}

return event.DecodeData(pos, data)
},
}
}

if strings.Contains(c.cfg.Addr, "/") {
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4 changes: 4 additions & 0 deletions canal/config.go
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Expand Up @@ -14,6 +14,7 @@ import (

"github.com/go-mysql-org/go-mysql/client"
"github.com/go-mysql-org/go-mysql/mysql"
"github.com/go-mysql-org/go-mysql/replication"
)

type DumpConfig struct {
Expand Down Expand Up @@ -71,6 +72,9 @@ type Config struct {
IncludeTableRegex []string `toml:"include_table_regex"`
ExcludeTableRegex []string `toml:"exclude_table_regex"`

// Allows to specify a custom function to decode RowsEvent. This can be used to skip decoding of some events.
RowsEventDecodeFunc func(*replication.RowsEvent, []byte) error

// discard row event without table meta
DiscardNoMetaRowEvent bool `toml:"discard_no_meta_row_event"`

Expand Down