rok commented on code in PR #41821:
URL: https://github.com/apache/arrow/pull/41821#discussion_r1707371998
##########
cpp/src/parquet/file_writer.cc:
##########
@@ -567,6 +567,44 @@ void WriteEncryptedFileMetadata(const FileMetaData&
file_metadata,
}
}
+void WriteEncryptedMetadataFile(
+ const FileMetaData& metadata, std::shared_ptr<::arrow::io::OutputStream>
sink,
+ std::shared_ptr<FileEncryptionProperties> file_encryption_properties) {
+ auto file_encryptor = std::make_unique<InternalFileEncryptor>(
+ file_encryption_properties.get(), ::arrow::default_memory_pool());
+
+ if (file_encryption_properties->encrypted_footer()) {
+ PARQUET_THROW_NOT_OK(sink->Write(kParquetEMagic, 4));
+
+ PARQUET_ASSIGN_OR_THROW(int64_t position, sink->Tell());
+ auto metadata_start = static_cast<uint64_t>(position);
+
+ auto writer_props = parquet::WriterProperties::Builder()
+ .encryption(file_encryption_properties)
+ ->build();
+ auto builder = FileMetaDataBuilder::Make(metadata.schema(), writer_props);
+
+ auto footer_metadata = builder->Finish(metadata.key_value_metadata());
+ auto crypto_metadata = builder->GetCryptoMetaData();
+ WriteFileCryptoMetaData(*crypto_metadata, sink.get());
+
+ auto footer_encryptor = file_encryptor->GetFooterEncryptor();
+ WriteEncryptedFileMetadata(metadata, sink.get(), footer_encryptor, true);
+ PARQUET_ASSIGN_OR_THROW(position, sink->Tell());
+ auto footer_and_crypto_len = static_cast<uint32_t>(position -
metadata_start);
+ PARQUET_THROW_NOT_OK(
+ sink->Write(reinterpret_cast<uint8_t*>(&footer_and_crypto_len), 4));
+ PARQUET_THROW_NOT_OK(sink->Write(kParquetEMagic, 4));
+ } else {
Review Comment:
For the test `FileMetadata` object this reads several files, extracts their
metadata and merges them (`metadata->AppendRowGroups(*metadata_vector[1])`).
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: github-unsubscr...@arrow.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
