mirror of
https://gitee.com/milvus-io/milvus.git
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c4ae9f4ece
related: https://github.com/milvus-io/milvus/issues/39173 Signed-off-by: shaoting-huang <shaoting.huang@zilliz.com>
78 lines
2.1 KiB
Go
78 lines
2.1 KiB
Go
// Copyright 2023 Zilliz
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package packed
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/*
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#cgo pkg-config: milvus_core
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#include <stdlib.h>
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#include "segcore/packed_writer_c.h"
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#include "arrow/c/abi.h"
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#include "arrow/c/helpers.h"
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*/
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import "C"
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import (
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"fmt"
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"unsafe"
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"github.com/apache/arrow/go/v12/arrow"
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"github.com/apache/arrow/go/v12/arrow/cdata"
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"github.com/cockroachdb/errors"
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)
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func NewPackedWriter(path string, schema *arrow.Schema, bufferSize int) (*PackedWriter, error) {
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var cas cdata.CArrowSchema
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cdata.ExportArrowSchema(schema, &cas)
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cSchema := (*C.struct_ArrowSchema)(unsafe.Pointer(&cas))
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cPath := C.CString(path)
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defer C.free(unsafe.Pointer(cPath))
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cBufferSize := C.int64_t(bufferSize)
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var cPackedWriter C.CPackedWriter
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status := C.NewPackedWriter(cPath, cSchema, cBufferSize, &cPackedWriter)
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if status != 0 {
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return nil, fmt.Errorf("failed to new packed writer: %s, status: %d", path, status)
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}
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return &PackedWriter{cPackedWriter: cPackedWriter}, nil
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}
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func (pw *PackedWriter) WriteRecordBatch(recordBatch arrow.Record) error {
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var caa cdata.CArrowArray
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var cas cdata.CArrowSchema
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cdata.ExportArrowRecordBatch(recordBatch, &caa, &cas)
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cArr := (*C.struct_ArrowArray)(unsafe.Pointer(&caa))
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cSchema := (*C.struct_ArrowSchema)(unsafe.Pointer(&cas))
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status := C.WriteRecordBatch(pw.cPackedWriter, cArr, cSchema)
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if status != 0 {
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return errors.New("PackedWriter: failed to write record batch")
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}
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return nil
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}
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func (pw *PackedWriter) Close() error {
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status := C.CloseWriter(pw.cPackedWriter)
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if status != 0 {
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return errors.New("PackedWriter: failed to close file")
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}
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return nil
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}
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