[sqlite] use eof as good error

internal/sqlite/binlog_engine.go

@@ -2,6 +2,7 @@ package sqlite
 
 import (
 	"errors"
+	"io"
 	"time"
 
 	binlog2 "github.com/vkcom/statshouse/internal/vkgo/binlog"
@@ -24,6 +25,19 @@ const (
 	maxReplicaQueueBytes             = 1 << 30 // 1GB
 )
 
+func isEOFErr(err error) bool {
+	return err == binlog2.ErrorNotEnoughData ||
+		err == io.EOF ||
+		err == io.ErrUnexpectedEOF ||
+		errors.Is(err, binlog2.ErrorNotEnoughData) ||
+		errors.Is(err, io.EOF) ||
+		errors.Is(err, io.ErrUnexpectedEOF)
+}
+
+func isExpectedError(err error) bool {
+	return errors.Is(err, binlog2.ErrorUnknownMagic) || isEOFErr(err)
+}
+
 // Apply is used when re-reading or when working as a replica
 func (impl *binlogEngineReplicaImpl) Apply(payload []byte) (newOffset int64, err error) {
 	defer impl.e.opt.StatsOptions.measureActionDurationSince("engine_apply", time.Now())
@@ -83,7 +97,7 @@ func (impl *binlogEngineReplicaImpl) apply(payload []byte) (newOffset int64, err
 		err1 := binlogUpdateOffset(conn, newOffset)
 		if err != nil {
 			errToReturn = err
-			if !errors.Is(err, binlog2.ErrorUnknownMagic) && !errors.Is(err, binlog2.ErrorNotEnoughData) {
+			if !isExpectedError(err) {
 				return err
 			}
 		}