Add archived parquet as int. package (#9912)

Since github.com/minio/parquet-go is archived add it as internal package.

pkg/s3select/internal/parquet-go/compression.go

@@ -0,0 +1,127 @@
+/*
+ * Minio Cloud Storage, (C) 2018 Minio, Inc.
+ *
+ * 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 parquet
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"sync"
+
+	"github.com/klauspost/compress/gzip"
+	"github.com/klauspost/compress/snappy"
+	"github.com/klauspost/compress/zstd"
+	"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
+	"github.com/pierrec/lz4"
+)
+
+type compressionCodec parquet.CompressionCodec
+
+var zstdOnce sync.Once
+var zstdEnc *zstd.Encoder
+var zstdDec *zstd.Decoder
+
+func initZstd() {
+	zstdOnce.Do(func() {
+		zstdEnc, _ = zstd.NewWriter(nil, zstd.WithZeroFrames(true))
+		zstdDec, _ = zstd.NewReader(nil)
+	})
+}
+
+func (c compressionCodec) compress(buf []byte) ([]byte, error) {
+	switch parquet.CompressionCodec(c) {
+	case parquet.CompressionCodec_UNCOMPRESSED:
+		return buf, nil
+
+	case parquet.CompressionCodec_SNAPPY:
+		return snappy.Encode(nil, buf), nil
+
+	case parquet.CompressionCodec_GZIP:
+		byteBuf := new(bytes.Buffer)
+		writer := gzip.NewWriter(byteBuf)
+		n, err := writer.Write(buf)
+		if err != nil {
+			return nil, err
+		}
+		if n != len(buf) {
+			return nil, fmt.Errorf("short writes")
+		}
+
+		if err = writer.Flush(); err != nil {
+			return nil, err
+		}
+
+		if err = writer.Close(); err != nil {
+			return nil, err
+		}
+
+		return byteBuf.Bytes(), nil
+
+	case parquet.CompressionCodec_LZ4:
+		byteBuf := new(bytes.Buffer)
+		writer := lz4.NewWriter(byteBuf)
+		n, err := writer.Write(buf)
+		if err != nil {
+			return nil, err
+		}
+		if n != len(buf) {
+			return nil, fmt.Errorf("short writes")
+		}
+
+		if err = writer.Flush(); err != nil {
+			return nil, err
+		}
+
+		if err = writer.Close(); err != nil {
+			return nil, err
+		}
+
+		return byteBuf.Bytes(), nil
+	case parquet.CompressionCodec_ZSTD:
+		initZstd()
+		return zstdEnc.EncodeAll(buf, nil), nil
+	}
+
+	return nil, fmt.Errorf("invalid compression codec %v", c)
+}
+
+func (c compressionCodec) uncompress(buf []byte) ([]byte, error) {
+	switch parquet.CompressionCodec(c) {
+	case parquet.CompressionCodec_UNCOMPRESSED:
+		return buf, nil
+
+	case parquet.CompressionCodec_SNAPPY:
+		return snappy.Decode(nil, buf)
+
+	case parquet.CompressionCodec_GZIP:
+		reader, err := gzip.NewReader(bytes.NewReader(buf))
+		if err != nil {
+			return nil, err
+		}
+		defer reader.Close()
+		return ioutil.ReadAll(reader)
+
+	case parquet.CompressionCodec_LZ4:
+		return ioutil.ReadAll(lz4.NewReader(bytes.NewReader(buf)))
+
+	case parquet.CompressionCodec_ZSTD:
+		initZstd()
+		return zstdDec.DecodeAll(buf, nil)
+	}
+
+	return nil, fmt.Errorf("invalid compression codec %v", c)
+}