1 | // Licensed to the Apache Software Foundation (ASF) under one |
---|---|
2 | // or more contributor license agreements. See the NOTICE file |
3 | // distributed with this work for additional information |
4 | // regarding copyright ownership. The ASF licenses this file |
5 | // to you under the Apache License, Version 2.0 (the |
6 | // "License"); you may not use this file except in compliance |
7 | // with the License. You may obtain a copy of the License at |
8 | // |
9 | // http://www.apache.org/licenses/LICENSE-2.0 |
10 | // |
11 | // Unless required by applicable law or agreed to in writing, |
12 | // software distributed under the License is distributed on an |
13 | // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
14 | // KIND, either express or implied. See the License for the |
15 | // specific language governing permissions and limitations |
16 | // under the License. |
17 | |
18 | #include <iostream> |
19 | #include <memory> |
20 | #include <string> |
21 | |
22 | #include "arrow/ipc/reader.h" |
23 | #include "arrow/ipc/writer.h" |
24 | #include "arrow/record_batch.h" |
25 | #include "arrow/status.h" |
26 | |
27 | #include "arrow/util/io-util.h" |
28 | |
29 | namespace arrow { |
30 | namespace ipc { |
31 | |
32 | // Converts a stream from stdin to a file written to standard out. |
33 | // A typical usage would be: |
34 | // $ <program that produces streaming output> | stream-to-file > file.arrow |
35 | Status ConvertToFile() { |
36 | io::StdinStream input; |
37 | std::shared_ptr<RecordBatchReader> reader; |
38 | RETURN_NOT_OK(RecordBatchStreamReader::Open(&input, &reader)); |
39 | |
40 | io::StdoutStream sink; |
41 | std::shared_ptr<RecordBatchWriter> writer; |
42 | RETURN_NOT_OK(RecordBatchFileWriter::Open(&sink, reader->schema(), &writer)); |
43 | |
44 | std::shared_ptr<RecordBatch> batch; |
45 | while (true) { |
46 | RETURN_NOT_OK(reader->ReadNext(&batch)); |
47 | if (batch == nullptr) break; |
48 | RETURN_NOT_OK(writer->WriteRecordBatch(*batch)); |
49 | } |
50 | return writer->Close(); |
51 | } |
52 | |
53 | } // namespace ipc |
54 | } // namespace arrow |
55 | |
56 | int main(int argc, char** argv) { |
57 | arrow::Status status = arrow::ipc::ConvertToFile(); |
58 | if (!status.ok()) { |
59 | std::cerr << "Could not convert to file: "<< status.ToString() << std::endl; |
60 | return 1; |
61 | } |
62 | return 0; |
63 | } |
64 |