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feat: introduce third-party milvus-storage (#39418)
related: #39173 Signed-off-by: shaoting-huang <shaoting.huang@zilliz.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| // Copyright 2023 Zilliz | ||
| // | ||
| // 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. | ||
|
|
||
| #include "segcore/packed_reader_c.h" | ||
| #include "milvus-storage/packed/reader.h" | ||
| #include "milvus-storage/common/log.h" | ||
| #include "milvus-storage/filesystem/fs.h" | ||
| #include "milvus-storage/common/config.h" | ||
|
|
||
| #include <arrow/c/bridge.h> | ||
| #include <arrow/filesystem/filesystem.h> | ||
| #include <arrow/status.h> | ||
| #include <memory> | ||
|
|
||
| int | ||
| NewPackedReader(const char* path, | ||
| struct ArrowSchema* schema, | ||
| const int64_t buffer_size, | ||
| CPackedReader* c_packed_reader) { | ||
| try { | ||
| auto truePath = std::string(path); | ||
| auto factory = std::make_shared<milvus_storage::FileSystemFactory>(); | ||
| auto conf = milvus_storage::StorageConfig(); | ||
| conf.uri = "file:///tmp/"; | ||
| auto trueFs = factory->BuildFileSystem(conf, &truePath).value(); | ||
| auto trueSchema = arrow::ImportSchema(schema).ValueOrDie(); | ||
| std::set<int> needed_columns; | ||
| for (int i = 0; i < trueSchema->num_fields(); i++) { | ||
| needed_columns.emplace(i); | ||
| } | ||
| auto reader = std::make_unique<milvus_storage::PackedRecordBatchReader>( | ||
| *trueFs, path, trueSchema, needed_columns, buffer_size); | ||
| *c_packed_reader = reader.release(); | ||
| return 0; | ||
| } catch (std::exception& e) { | ||
| return -1; | ||
| } | ||
| } | ||
|
|
||
| int | ||
| ReadNext(CPackedReader c_packed_reader, | ||
| CArrowArray* out_array, | ||
| CArrowSchema* out_schema) { | ||
| try { | ||
| auto packed_reader = | ||
| static_cast<milvus_storage::PackedRecordBatchReader*>( | ||
| c_packed_reader); | ||
| std::shared_ptr<arrow::RecordBatch> record_batch; | ||
| auto status = packed_reader->ReadNext(&record_batch); | ||
| if (!status.ok()) { | ||
| return -1; | ||
| } | ||
| if (record_batch == nullptr) { | ||
| // end of file | ||
| return 0; | ||
| } else { | ||
| std::unique_ptr<ArrowArray> arr = std::make_unique<ArrowArray>(); | ||
| std::unique_ptr<ArrowSchema> schema = | ||
| std::make_unique<ArrowSchema>(); | ||
| auto status = arrow::ExportRecordBatch( | ||
| *record_batch, arr.get(), schema.get()); | ||
| if (!status.ok()) { | ||
| return -1; | ||
| } | ||
| *out_array = arr.release(); | ||
| *out_schema = schema.release(); | ||
| return 0; | ||
| } | ||
| return 0; | ||
| } catch (std::exception& e) { | ||
| return -1; | ||
| } | ||
| } | ||
|
|
||
| int | ||
| CloseReader(CPackedReader c_packed_reader) { | ||
| try { | ||
| auto packed_reader = | ||
| static_cast<milvus_storage::PackedRecordBatchReader*>( | ||
| c_packed_reader); | ||
| delete packed_reader; | ||
| return 0; | ||
| } catch (std::exception& e) { | ||
| return -1; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| // Copyright 2023 Zilliz | ||
| // | ||
| // 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. | ||
|
|
||
| #pragma once | ||
|
|
||
| #ifdef __cplusplus | ||
| extern "C" { | ||
| #endif | ||
|
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| #include <arrow/c/abi.h> | ||
|
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| typedef void* CPackedReader; | ||
| typedef void* CArrowArray; | ||
| typedef void* CArrowSchema; | ||
|
|
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| /** | ||
| * @brief Open a packed reader to read needed columns in the specified path. | ||
| * | ||
| * @param path The root path of the packed files to read. | ||
| * @param schema The original schema of data. | ||
| * @param buffer_size The max buffer size of the packed reader. | ||
| * @param c_packed_reader The output pointer of the packed reader. | ||
| */ | ||
| int | ||
| NewPackedReader(const char* path, | ||
| struct ArrowSchema* schema, | ||
| const int64_t buffer_size, | ||
| CPackedReader* c_packed_reader); | ||
|
|
||
| /** | ||
| * @brief Read the next record batch from the packed reader. | ||
| * By default, the maximum return batch is 1024 rows. | ||
| * | ||
| * @param c_packed_reader The packed reader to read. | ||
| * @param out_array The output pointer of the arrow array. | ||
| * @param out_schema The output pointer of the arrow schema. | ||
| */ | ||
| int | ||
| ReadNext(CPackedReader c_packed_reader, | ||
| CArrowArray* out_array, | ||
| CArrowSchema* out_schema); | ||
|
|
||
| /** | ||
| * @brief Close the packed reader and release the resources. | ||
| * | ||
| * @param c_packed_reader The packed reader to close. | ||
| */ | ||
| int | ||
| CloseReader(CPackedReader c_packed_reader); | ||
|
|
||
| #ifdef __cplusplus | ||
| } | ||
| #endif |
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