-
Notifications
You must be signed in to change notification settings - Fork 265
/
buf.go
51 lines (43 loc) · 1.23 KB
/
buf.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
// Copyright 2023 Matrix Origin
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package etl
import (
"bytes"
"context"
"io"
"github.com/matrixorigin/matrixone/pkg/common/mpool"
)
// var _ table.RowWriter = (*BufWriter)(nil)
var _ io.WriteCloser = (*BufWriter)(nil)
type BufWriter struct {
ctx context.Context
writer io.Writer
buf *bytes.Buffer
}
func NewBufWriter(ctx context.Context, writer io.Writer) *BufWriter {
w := &BufWriter{
ctx: ctx,
writer: writer,
buf: bytes.NewBuffer(make([]byte, 0, mpool.MB)),
}
return w
}
func (w *BufWriter) Write(p []byte) (n int, err error) {
return w.buf.Write(p)
}
func (w *BufWriter) Close() error {
_, err := w.writer.Write(w.buf.Next(w.buf.Len()))
w.buf = nil
return err
}