milvus/internal/util/importutilv2/util.go

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// Licensed to the LF AI & Data foundation under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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 importutilv2
import (
"fmt"
"path/filepath"
"github.com/samber/lo"
"github.com/milvus-io/milvus/internal/proto/internalpb"
"github.com/milvus-io/milvus/pkg/util/merr"
)
type FileType int
const (
Invalid FileType = 0
JSON FileType = 1
Numpy FileType = 2
Parquet FileType = 3
JSONFileExt = ".json"
NumpyFileExt = ".npy"
ParquetFileExt = ".parquet"
)
var FileTypeName = map[int]string{
0: "Invalid",
1: "JSON",
2: "Numpy",
3: "Parquet",
}
func (f FileType) String() string {
return FileTypeName[int(f)]
}
func GetFileType(file *internalpb.ImportFile) (FileType, error) {
if len(file.GetPaths()) == 0 {
return Invalid, merr.WrapErrImportFailed("no file to import")
}
exts := lo.Map(file.GetPaths(), func(path string, _ int) string {
return filepath.Ext(path)
})
ext := exts[0]
for i := 1; i < len(exts); i++ {
if exts[i] != ext {
return Invalid, merr.WrapErrImportFailed(
fmt.Sprintf("inconsistency in file types, (%s) vs (%s)",
file.GetPaths()[0], file.GetPaths()[i]))
}
}
switch ext {
case JSONFileExt:
if len(file.GetPaths()) != 1 {
return Invalid, merr.WrapErrImportFailed("for JSON import, accepts only one file")
}
return JSON, nil
case NumpyFileExt:
return Numpy, nil
case ParquetFileExt:
if len(file.GetPaths()) != 1 {
return Invalid, merr.WrapErrImportFailed("for Parquet import, accepts only one file")
}
return Parquet, nil
}
return Invalid, merr.WrapErrImportFailed(fmt.Sprintf("unexpect file type, files=%v", file.GetPaths()))
}