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20effc67 TL |
1 | |
2 | #pragma once | |
3 | ||
4 | #if ! __has_include (<arrow/api.h>) || ! __has_include (<arrow/io/api.h>) || !__has_include (<parquet/arrow/reader.h>) | |
5 | # undef _ARROW_EXIST | |
6 | #endif | |
7 | ||
8 | #ifdef _ARROW_EXIST | |
9 | ||
10 | #include <iostream> | |
11 | #include <arrow/api.h> | |
12 | #include <arrow/io/api.h> | |
13 | #include <parquet/arrow/reader.h> | |
14 | #include <parquet/arrow/writer.h> | |
15 | #include <parquet/exception.h> | |
16 | #include <set> | |
17 | #include <parquet/column_reader.h> | |
18 | #include <arrow/util/io_util.h> | |
19 | ||
20 | #include <arrow/io/interfaces.h> | |
21 | #include <utility> | |
22 | ||
23 | #include <mutex> | |
24 | #include <functional> | |
25 | ||
26 | #include "internal_file_decryptor.h" | |
27 | #include "encryption_internal.h" | |
28 | ||
1e59de90 TL |
29 | #if ARROW_VERSION_MAJOR < 9 |
30 | #define _ARROW_FD fd_ | |
31 | #define _ARROW_FD_TYPE int | |
32 | #else | |
33 | #define _ARROW_FD fd_.fd() | |
34 | #define _ARROW_FD_TYPE arrow::internal::FileDescriptor | |
35 | #endif | |
36 | ||
20effc67 TL |
37 | /******************************************/ |
38 | /******************************************/ | |
39 | class optional_yield; | |
40 | namespace s3selectEngine { | |
41 | class rgw_s3select_api { | |
42 | ||
43 | // global object for setting interface between RGW and parquet-reader | |
44 | private: | |
45 | ||
46 | public: | |
47 | ||
48 | std::function<int(int64_t,int64_t,void*,optional_yield*)> range_req_fptr; | |
49 | std::function<size_t(void)> get_size_fptr; | |
50 | optional_yield *m_y; | |
51 | ||
52 | void set_range_req_api(std::function<int(int64_t,int64_t,void*,optional_yield*)> fp) | |
53 | { | |
54 | range_req_fptr = fp; | |
55 | } | |
56 | ||
57 | void set_get_size_api(std::function<size_t(void)> fp) | |
58 | { | |
59 | get_size_fptr = fp; | |
60 | } | |
61 | }; | |
62 | } | |
63 | ||
64 | /******************************************/ | |
65 | /******************************************/ | |
66 | /******************************************/ | |
67 | ||
68 | static constexpr uint8_t kParquetMagic[4] = {'P', 'A', 'R', '1'}; | |
69 | static constexpr uint8_t kParquetEMagic[4] = {'P', 'A', 'R', 'E'}; | |
70 | constexpr int kGcmTagLength = 16; | |
71 | ||
72 | namespace arrow { | |
73 | namespace io { | |
74 | namespace internal { | |
75 | ||
76 | ARROW_EXPORT void CloseFromDestructor(FileInterface* file); | |
77 | ||
78 | // Validate a (offset, size) region (as given to ReadAt) against | |
79 | // the file size. Return the actual read size. | |
80 | ARROW_EXPORT Result<int64_t> ValidateReadRange(int64_t offset, int64_t size, | |
81 | int64_t file_size); | |
82 | // Validate a (offset, size) region (as given to WriteAt) against | |
83 | // the file size. Short writes are not allowed. | |
84 | ARROW_EXPORT Status ValidateWriteRange(int64_t offset, int64_t size, int64_t file_size); | |
85 | ||
86 | // Validate a (offset, size) region (as given to ReadAt or WriteAt), without | |
87 | // knowing the file size. | |
88 | ARROW_EXPORT Status ValidateRange(int64_t offset, int64_t size); | |
89 | ||
90 | ARROW_EXPORT | |
91 | std::vector<ReadRange> CoalesceReadRanges(std::vector<ReadRange> ranges, | |
92 | int64_t hole_size_limit, | |
93 | int64_t range_size_limit); | |
94 | ||
95 | ARROW_EXPORT | |
96 | ::arrow::internal::ThreadPool* GetIOThreadPool(); | |
97 | ||
98 | } // namespace internal | |
99 | } // namespace io | |
100 | } | |
101 | ||
102 | ||
103 | // RGWimpl and OSFile implements the access to storage objects, OSFile(filesystem files) RGWimpl( ceph S3 ) | |
104 | // ObjectInterface(temporary) is "empty base class" enables injections of access function to storage-objects | |
105 | // ReadableFileImpl an implementation layer to ObjectInterface objects | |
106 | // ReadableFile a layer which call to ReadableFileImpl, enable runtime switching between implementations | |
107 | // ParquetFileReader is the main interface (underline implementation is transparent to this layer) | |
108 | // | |
109 | ||
110 | ||
111 | namespace arrow { | |
112 | class Buffer; | |
113 | namespace io { | |
114 | ||
115 | class ObjectInterface { | |
116 | ||
117 | #define NOT_IMPLEMENTED {std::cout << "not implemented" << std::endl;} | |
118 | ||
119 | //purpose: to implement the range-request from single object | |
120 | public: | |
121 | ObjectInterface() : fd_(-1), is_open_(false), size_(-1), need_seeking_(false) {} | |
122 | ||
123 | virtual ~ObjectInterface(){} | |
124 | ||
125 | // Note: only one of the Open* methods below may be called on a given instance | |
126 | ||
127 | virtual Status OpenWritable(const std::string& path, bool truncate, bool append, bool write_only){return Status::OK();} | |
128 | ||
129 | // This is different from OpenWritable(string, ...) in that it doesn't | |
130 | // truncate nor mandate a seekable file | |
131 | virtual Status OpenWritable(int fd){return Status::OK();} | |
132 | ||
133 | virtual Status OpenReadable(const std::string& path){return Status::OK();} | |
134 | ||
135 | virtual Status OpenReadable(int fd){return Status::OK();} | |
136 | ||
137 | virtual Status CheckClosed() const {return Status::OK();} | |
138 | ||
139 | virtual Status Close(){return Status::OK();} | |
140 | ||
141 | virtual Result<int64_t> Read(int64_t nbytes, void* out){return Result<int64_t>(-1);} | |
142 | ||
143 | virtual Result<int64_t> ReadAt(int64_t position, int64_t nbytes, void* out){return Result<int64_t>(-1);} | |
144 | ||
145 | virtual Status Seek(int64_t pos){return Status::OK();} | |
146 | ||
147 | virtual Result<int64_t> Tell() const {return Result<int64_t>(-1);} | |
148 | ||
149 | virtual Status Write(const void* data, int64_t length){return Status::OK();} | |
150 | ||
151 | virtual int fd() const{return -1;} | |
152 | ||
153 | virtual bool is_open() const{return false;} | |
154 | ||
155 | virtual int64_t size() const{return -1;} | |
156 | ||
157 | virtual FileMode::type mode() const{return FileMode::READ;} | |
158 | ||
159 | #if 0 | |
160 | std::mutex& lock(){} | |
161 | #endif | |
162 | ||
163 | protected: | |
164 | virtual Status SetFileName(const std::string& file_name){return Status::OK();} | |
165 | ||
166 | virtual Status SetFileName(int fd){return Status::OK();} | |
167 | ||
168 | virtual Status CheckPositioned(){return Status::OK();} | |
169 | ||
170 | ::arrow::internal::PlatformFilename file_name_; | |
171 | ||
172 | std::mutex lock_; | |
173 | ||
174 | // File descriptor | |
1e59de90 | 175 | _ARROW_FD_TYPE fd_; |
20effc67 TL |
176 | |
177 | FileMode::type mode_; | |
178 | ||
179 | bool is_open_; | |
180 | int64_t size_; | |
181 | // Whether ReadAt made the file position non-deterministic. | |
182 | std::atomic<bool> need_seeking_; | |
183 | ||
184 | }; //ObjectInterface | |
185 | ||
186 | } //namespace io | |
187 | } //namespace arrow | |
188 | ||
189 | namespace arrow { | |
190 | ||
191 | using internal::IOErrorFromErrno; | |
192 | ||
193 | namespace io { | |
194 | ||
195 | class OSFile : public ObjectInterface { | |
196 | public: | |
197 | OSFile() : fd_(-1), is_open_(false), size_(-1), need_seeking_(false) {} | |
198 | ||
199 | ~OSFile() {} | |
200 | ||
201 | // Note: only one of the Open* methods below may be called on a given instance | |
202 | ||
203 | Status OpenWritable(const std::string& path, bool truncate, bool append, | |
204 | bool write_only) override { | |
205 | RETURN_NOT_OK(SetFileName(path)); | |
206 | ||
207 | ARROW_ASSIGN_OR_RAISE(fd_, ::arrow::internal::FileOpenWritable(file_name_, write_only, | |
208 | truncate, append)); | |
209 | is_open_ = true; | |
210 | mode_ = write_only ? FileMode::WRITE : FileMode::READWRITE; | |
211 | ||
212 | if (!truncate) { | |
1e59de90 | 213 | ARROW_ASSIGN_OR_RAISE(size_, ::arrow::internal::FileGetSize(_ARROW_FD)); |
20effc67 TL |
214 | } else { |
215 | size_ = 0; | |
216 | } | |
217 | return Status::OK(); | |
218 | } | |
219 | ||
220 | // This is different from OpenWritable(string, ...) in that it doesn't | |
221 | // truncate nor mandate a seekable file | |
222 | Status OpenWritable(int fd) override { | |
223 | auto result = ::arrow::internal::FileGetSize(fd); | |
224 | if (result.ok()) { | |
225 | size_ = *result; | |
226 | } else { | |
227 | // Non-seekable file | |
228 | size_ = -1; | |
229 | } | |
230 | RETURN_NOT_OK(SetFileName(fd)); | |
231 | is_open_ = true; | |
232 | mode_ = FileMode::WRITE; | |
1e59de90 | 233 | #if ARROW_VERSION_MAJOR < 9 |
20effc67 | 234 | fd_ = fd; |
1e59de90 TL |
235 | #else |
236 | fd_ = arrow::internal::FileDescriptor{fd}; | |
237 | #endif | |
20effc67 TL |
238 | return Status::OK(); |
239 | } | |
240 | ||
241 | Status OpenReadable(const std::string& path) override { | |
242 | RETURN_NOT_OK(SetFileName(path)); | |
243 | ||
244 | ARROW_ASSIGN_OR_RAISE(fd_, ::arrow::internal::FileOpenReadable(file_name_)); | |
1e59de90 | 245 | ARROW_ASSIGN_OR_RAISE(size_, ::arrow::internal::FileGetSize(_ARROW_FD)); |
20effc67 TL |
246 | |
247 | is_open_ = true; | |
248 | mode_ = FileMode::READ; | |
249 | return Status::OK(); | |
250 | } | |
251 | ||
252 | Status OpenReadable(int fd) override { | |
253 | ARROW_ASSIGN_OR_RAISE(size_, ::arrow::internal::FileGetSize(fd)); | |
254 | RETURN_NOT_OK(SetFileName(fd)); | |
255 | is_open_ = true; | |
256 | mode_ = FileMode::READ; | |
1e59de90 | 257 | #if ARROW_VERSION_MAJOR < 9 |
20effc67 | 258 | fd_ = fd; |
1e59de90 TL |
259 | #else |
260 | fd_ = arrow::internal::FileDescriptor{fd}; | |
261 | #endif | |
20effc67 TL |
262 | return Status::OK(); |
263 | } | |
264 | ||
265 | Status CheckClosed() const override { | |
266 | if (!is_open_) { | |
267 | return Status::Invalid("Invalid operation on closed file"); | |
268 | } | |
269 | return Status::OK(); | |
270 | } | |
271 | ||
272 | Status Close() override { | |
273 | if (is_open_) { | |
274 | // Even if closing fails, the fd will likely be closed (perhaps it's | |
275 | // already closed). | |
276 | is_open_ = false; | |
1e59de90 | 277 | #if ARROW_VERSION_MAJOR < 9 |
20effc67 TL |
278 | int fd = fd_; |
279 | fd_ = -1; | |
280 | RETURN_NOT_OK(::arrow::internal::FileClose(fd)); | |
1e59de90 TL |
281 | #else |
282 | RETURN_NOT_OK(fd_.Close()); | |
283 | #endif | |
20effc67 TL |
284 | } |
285 | return Status::OK(); | |
286 | } | |
287 | ||
288 | Result<int64_t> Read(int64_t nbytes, void* out) override { | |
289 | RETURN_NOT_OK(CheckClosed()); | |
290 | RETURN_NOT_OK(CheckPositioned()); | |
1e59de90 | 291 | return ::arrow::internal::FileRead(_ARROW_FD, reinterpret_cast<uint8_t*>(out), nbytes); |
20effc67 TL |
292 | } |
293 | ||
294 | Result<int64_t> ReadAt(int64_t position, int64_t nbytes, void* out) override { | |
295 | RETURN_NOT_OK(CheckClosed()); | |
296 | RETURN_NOT_OK(internal::ValidateRange(position, nbytes)); | |
297 | // ReadAt() leaves the file position undefined, so require that we seek | |
298 | // before calling Read() or Write(). | |
299 | need_seeking_.store(true); | |
1e59de90 | 300 | return ::arrow::internal::FileReadAt(_ARROW_FD, reinterpret_cast<uint8_t*>(out), position, |
20effc67 TL |
301 | nbytes); |
302 | } | |
303 | ||
304 | Status Seek(int64_t pos) override { | |
305 | RETURN_NOT_OK(CheckClosed()); | |
306 | if (pos < 0) { | |
307 | return Status::Invalid("Invalid position"); | |
308 | } | |
1e59de90 | 309 | Status st = ::arrow::internal::FileSeek(_ARROW_FD, pos); |
20effc67 TL |
310 | if (st.ok()) { |
311 | need_seeking_.store(false); | |
312 | } | |
313 | return st; | |
314 | } | |
315 | ||
316 | Result<int64_t> Tell() const override { | |
317 | RETURN_NOT_OK(CheckClosed()); | |
1e59de90 | 318 | return ::arrow::internal::FileTell(_ARROW_FD); |
20effc67 TL |
319 | } |
320 | ||
321 | Status Write(const void* data, int64_t length) override { | |
322 | RETURN_NOT_OK(CheckClosed()); | |
323 | ||
324 | std::lock_guard<std::mutex> guard(lock_); | |
325 | RETURN_NOT_OK(CheckPositioned()); | |
326 | if (length < 0) { | |
327 | return Status::IOError("Length must be non-negative"); | |
328 | } | |
1e59de90 | 329 | return ::arrow::internal::FileWrite(_ARROW_FD, reinterpret_cast<const uint8_t*>(data), |
20effc67 TL |
330 | length); |
331 | } | |
332 | ||
1e59de90 | 333 | int fd() const override { return _ARROW_FD; } |
20effc67 TL |
334 | |
335 | bool is_open() const override { return is_open_; } | |
336 | ||
337 | int64_t size() const override { return size_; } | |
338 | ||
339 | FileMode::type mode() const override { return mode_; } | |
340 | ||
341 | std::mutex& lock() { return lock_; } | |
342 | ||
343 | protected: | |
344 | Status SetFileName(const std::string& file_name) override { | |
345 | return ::arrow::internal::PlatformFilename::FromString(file_name).Value(&file_name_); | |
346 | } | |
347 | ||
348 | Status SetFileName(int fd) override { | |
349 | std::stringstream ss; | |
350 | ss << "<fd " << fd << ">"; | |
351 | return SetFileName(ss.str()); | |
352 | } | |
353 | ||
354 | Status CheckPositioned() override { | |
355 | if (need_seeking_.load()) { | |
356 | return Status::Invalid( | |
357 | "Need seeking after ReadAt() before " | |
358 | "calling implicitly-positioned operation"); | |
359 | } | |
360 | return Status::OK(); | |
361 | } | |
362 | ||
363 | ::arrow::internal::PlatformFilename file_name_; | |
364 | ||
365 | std::mutex lock_; | |
366 | ||
367 | // File descriptor | |
1e59de90 | 368 | _ARROW_FD_TYPE fd_; |
20effc67 TL |
369 | |
370 | FileMode::type mode_; | |
371 | ||
372 | bool is_open_; | |
373 | int64_t size_; | |
374 | // Whether ReadAt made the file position non-deterministic. | |
375 | std::atomic<bool> need_seeking_; | |
376 | }; | |
377 | } // namespace io | |
378 | } // namespace arrow | |
379 | ||
380 | namespace arrow { | |
381 | class Buffer; | |
382 | namespace io { | |
383 | ||
384 | class RGWimpl : public ObjectInterface { | |
385 | ||
386 | //purpose: to implement the range-request from single object | |
387 | public: | |
388 | RGWimpl(s3selectEngine::rgw_s3select_api* rgw) : fd_(-1), is_open_(false), size_(-1), need_seeking_(false),m_rgw_impl(rgw) {} | |
389 | ||
390 | ~RGWimpl(){} | |
391 | ||
392 | #define NOT_IMPLEMENT { \ | |
393 | std::stringstream ss; \ | |
394 | ss << " method " << __FUNCTION__ << " is not implemented;"; \ | |
395 | throw parquet::ParquetException(ss.str()); \ | |
396 | } | |
397 | ||
398 | // Note: only one of the Open* methods below may be called on a given instance | |
399 | ||
400 | Status OpenWritable(const std::string& path, bool truncate, bool append, bool write_only) { NOT_IMPLEMENT;return Status::OK(); } | |
401 | ||
402 | // This is different from OpenWritable(string, ...) in that it doesn't | |
403 | // truncate nor mandate a seekable file | |
404 | Status OpenWritable(int fd) {NOT_IMPLEMENT;return Status::OK(); } | |
405 | ||
406 | Status OpenReadable(const std::string& path) { | |
407 | //RGW-implement | |
408 | ||
409 | RETURN_NOT_OK(SetFileName(path));//TODO can skip that | |
410 | size_ = m_rgw_impl->get_size_fptr(); | |
411 | ||
412 | is_open_ = true; | |
413 | mode_ = FileMode::READ; | |
414 | return Status::OK(); | |
415 | } | |
416 | ||
417 | Status OpenReadable(int fd) {NOT_IMPLEMENT;return Status::OK(); } | |
418 | ||
419 | Status CheckClosed() const { | |
420 | //RGW-implement | |
421 | if (!is_open_) { | |
422 | return Status::Invalid("Invalid operation on closed file"); | |
423 | } | |
424 | return Status::OK(); | |
425 | } | |
426 | ||
427 | Status Close() { | |
428 | //RGW-implement | |
429 | if (is_open_) { | |
430 | // Even if closing fails, the fd will likely be closed (perhaps it's | |
431 | // already closed). | |
432 | is_open_ = false; | |
433 | //int fd = fd_; | |
1e59de90 | 434 | #if ARROW_VERSION_MAJOR < 9 |
20effc67 | 435 | fd_ = -1; |
1e59de90 TL |
436 | #else |
437 | fd_.Close(); | |
438 | #endif | |
20effc67 TL |
439 | //RETURN_NOT_OK(::arrow::internal::FileClose(fd)); |
440 | } | |
441 | return Status::OK(); | |
442 | } | |
443 | ||
444 | Result<int64_t> Read(int64_t nbytes, void* out) { | |
445 | NOT_IMPLEMENT; | |
446 | RETURN_NOT_OK(CheckClosed()); | |
447 | RETURN_NOT_OK(CheckPositioned()); | |
1e59de90 | 448 | return ::arrow::internal::FileRead(_ARROW_FD, reinterpret_cast<uint8_t*>(out), nbytes); |
20effc67 TL |
449 | } |
450 | ||
451 | Result<int64_t> ReadAt(int64_t position, int64_t nbytes, void* out) { | |
452 | ||
453 | Result<int64_t> status = m_rgw_impl->range_req_fptr(position,nbytes,out,m_rgw_impl->m_y); | |
454 | ||
455 | return status; | |
456 | } | |
457 | ||
458 | Status Seek(int64_t pos) {NOT_IMPLEMENT;return Status::OK(); } | |
459 | ||
460 | Result<int64_t> Tell() const { | |
461 | NOT_IMPLEMENT; | |
462 | return Result<int64_t>(0); | |
463 | } | |
464 | ||
465 | Status Write(const void* data, int64_t length) { | |
466 | NOT_IMPLEMENT; | |
467 | return Status::OK(); | |
468 | } | |
469 | ||
1e59de90 | 470 | int fd() const { return _ARROW_FD; } |
20effc67 TL |
471 | |
472 | bool is_open() const { return is_open_; } | |
473 | ||
474 | int64_t size() const { return size_; } | |
475 | ||
476 | FileMode::type mode() const { return mode_; } | |
477 | ||
478 | std::mutex& lock() { return lock_; } //TODO skip | |
479 | ||
480 | protected: | |
481 | Status SetFileName(const std::string& file_name) override { | |
482 | return ::arrow::internal::PlatformFilename::FromString(file_name).Value(&file_name_); | |
483 | } | |
484 | ||
485 | Status SetFileName(int fd) {NOT_IMPLEMENT; return Status::OK(); } | |
486 | ||
487 | Status CheckPositioned() {NOT_IMPLEMENT; return Status::OK(); } | |
488 | ||
489 | ::arrow::internal::PlatformFilename file_name_; | |
490 | ||
491 | std::mutex lock_; | |
492 | ||
493 | // File descriptor | |
1e59de90 | 494 | _ARROW_FD_TYPE fd_; |
20effc67 TL |
495 | |
496 | FileMode::type mode_; | |
497 | ||
498 | bool is_open_; | |
499 | int64_t size_; | |
500 | // Whether ReadAt made the file position non-deterministic. | |
501 | std::atomic<bool> need_seeking_; | |
502 | ||
503 | private: | |
504 | ||
505 | s3selectEngine::rgw_s3select_api* m_rgw_impl; | |
506 | }; | |
507 | ||
508 | } //namespace io | |
509 | } //namespace arrow | |
510 | ||
511 | namespace arrow { | |
512 | ||
513 | class Buffer; | |
514 | class MemoryPool; | |
515 | class Status; | |
516 | ||
517 | namespace io { | |
518 | namespace ceph { | |
519 | ||
520 | /// \brief An operating system file open in read-only mode. | |
521 | /// | |
522 | /// Reads through this implementation are unbuffered. If many small reads | |
523 | /// need to be issued, it is recommended to use a buffering layer for good | |
524 | /// performance. | |
525 | class ARROW_EXPORT ReadableFile | |
526 | : public internal::RandomAccessFileConcurrencyWrapper<ReadableFile> { | |
527 | public: | |
528 | ~ReadableFile() override; | |
529 | ||
530 | /// \brief Open a local file for reading | |
531 | /// \param[in] path with UTF8 encoding | |
532 | /// \param[in] pool a MemoryPool for memory allocations | |
533 | /// \return ReadableFile instance | |
534 | static Result<std::shared_ptr<ReadableFile>> Open( | |
535 | const std::string& path,s3selectEngine::rgw_s3select_api* rgw,MemoryPool* pool = default_memory_pool()); | |
536 | ||
537 | /// \brief Open a local file for reading | |
538 | /// \param[in] fd file descriptor | |
539 | /// \param[in] pool a MemoryPool for memory allocations | |
540 | /// \return ReadableFile instance | |
541 | /// | |
542 | /// The file descriptor becomes owned by the ReadableFile, and will be closed | |
543 | /// on Close() or destruction. | |
544 | static Result<std::shared_ptr<ReadableFile>> Open( | |
545 | int fd, MemoryPool* pool = default_memory_pool()); | |
546 | ||
547 | bool closed() const override; | |
548 | ||
549 | int file_descriptor() const; | |
550 | ||
551 | Status WillNeed(const std::vector<ReadRange>& ranges) override; | |
552 | ||
553 | private: | |
554 | friend RandomAccessFileConcurrencyWrapper<ReadableFile>; | |
555 | ||
556 | explicit ReadableFile(MemoryPool* pool,s3selectEngine::rgw_s3select_api* rgw); | |
557 | ||
558 | Status DoClose(); | |
559 | Result<int64_t> DoTell() const; | |
560 | Result<int64_t> DoRead(int64_t nbytes, void* buffer); | |
561 | Result<std::shared_ptr<Buffer>> DoRead(int64_t nbytes); | |
562 | ||
563 | /// \brief Thread-safe implementation of ReadAt | |
564 | Result<int64_t> DoReadAt(int64_t position, int64_t nbytes, void* out); | |
565 | ||
566 | /// \brief Thread-safe implementation of ReadAt | |
567 | Result<std::shared_ptr<Buffer>> DoReadAt(int64_t position, int64_t nbytes); | |
568 | ||
569 | Result<int64_t> DoGetSize(); | |
570 | Status DoSeek(int64_t position); | |
571 | ||
572 | class ARROW_NO_EXPORT ReadableFileImpl; | |
573 | std::unique_ptr<ReadableFileImpl> impl_; | |
574 | }; | |
575 | ||
576 | ||
577 | } // namespace ceph | |
578 | } // namespace io | |
579 | } // namespace arrow | |
580 | ||
581 | // ---------------------------------------------------------------------- | |
582 | // ReadableFileImpl implementation | |
583 | ||
584 | namespace arrow { | |
585 | namespace io { | |
586 | namespace ceph { | |
587 | ||
588 | class ReadableFile::ReadableFileImpl : public ObjectInterface { | |
589 | public: | |
590 | ||
591 | ~ReadableFileImpl() | |
592 | { | |
593 | if(IMPL != nullptr) | |
594 | { | |
595 | delete IMPL; | |
596 | } | |
597 | } | |
598 | ||
599 | #ifdef CEPH_USE_FS | |
600 | explicit ReadableFileImpl(MemoryPool* pool) : pool_(pool) {IMPL=new OSFile();} | |
601 | #endif | |
602 | explicit ReadableFileImpl(MemoryPool* pool,s3selectEngine::rgw_s3select_api* rgw) : pool_(pool) {IMPL=new RGWimpl(rgw);} | |
603 | ||
604 | Status Open(const std::string& path) { return IMPL->OpenReadable(path); } | |
605 | ||
606 | Status Open(int fd) { return IMPL->OpenReadable(fd); } | |
607 | ||
608 | Result<std::shared_ptr<Buffer>> ReadBuffer(int64_t nbytes) { | |
609 | ARROW_ASSIGN_OR_RAISE(auto buffer, AllocateResizableBuffer(nbytes, pool_)); | |
610 | ||
611 | ARROW_ASSIGN_OR_RAISE(int64_t bytes_read, IMPL->Read(nbytes, buffer->mutable_data())); | |
612 | if (bytes_read < nbytes) { | |
613 | RETURN_NOT_OK(buffer->Resize(bytes_read)); | |
614 | buffer->ZeroPadding(); | |
615 | } | |
1e59de90 | 616 | return buffer; |
20effc67 TL |
617 | } |
618 | ||
619 | Result<std::shared_ptr<Buffer>> ReadBufferAt(int64_t position, int64_t nbytes) { | |
620 | ARROW_ASSIGN_OR_RAISE(auto buffer, AllocateResizableBuffer(nbytes, pool_)); | |
621 | ||
622 | ARROW_ASSIGN_OR_RAISE(int64_t bytes_read, | |
623 | IMPL->ReadAt(position, nbytes, buffer->mutable_data())); | |
624 | if (bytes_read < nbytes) { | |
625 | RETURN_NOT_OK(buffer->Resize(bytes_read)); | |
626 | buffer->ZeroPadding(); | |
627 | } | |
1e59de90 | 628 | return buffer; |
20effc67 TL |
629 | } |
630 | ||
631 | Status WillNeed(const std::vector<ReadRange>& ranges) { | |
632 | RETURN_NOT_OK(CheckClosed()); | |
633 | for (const auto& range : ranges) { | |
634 | RETURN_NOT_OK(internal::ValidateRange(range.offset, range.length)); | |
635 | #if defined(POSIX_FADV_WILLNEED) | |
1e59de90 | 636 | if (posix_fadvise(_ARROW_FD, range.offset, range.length, POSIX_FADV_WILLNEED)) { |
20effc67 TL |
637 | return IOErrorFromErrno(errno, "posix_fadvise failed"); |
638 | } | |
639 | #elif defined(F_RDADVISE) // macOS, BSD? | |
640 | struct { | |
641 | off_t ra_offset; | |
642 | int ra_count; | |
643 | } radvisory{range.offset, static_cast<int>(range.length)}; | |
1e59de90 | 644 | if (radvisory.ra_count > 0 && fcntl(_ARROW_FD, F_RDADVISE, &radvisory) == -1) { |
20effc67 TL |
645 | return IOErrorFromErrno(errno, "fcntl(fd, F_RDADVISE, ...) failed"); |
646 | } | |
647 | #endif | |
648 | } | |
649 | return Status::OK(); | |
650 | } | |
651 | ||
652 | ObjectInterface *IMPL;//TODO to declare in ObjectInterface | |
653 | ||
654 | private: | |
655 | ||
656 | MemoryPool* pool_; | |
657 | ||
658 | }; | |
659 | ||
660 | // ReadableFile implemmetation | |
661 | ReadableFile::ReadableFile(MemoryPool* pool,s3selectEngine::rgw_s3select_api* rgw) { impl_.reset(new ReadableFileImpl(pool,rgw)); } | |
662 | ||
663 | ReadableFile::~ReadableFile() { internal::CloseFromDestructor(this); } | |
664 | ||
665 | Result<std::shared_ptr<ReadableFile>> ReadableFile::Open(const std::string& path, | |
666 | s3selectEngine::rgw_s3select_api* rgw, | |
667 | MemoryPool* pool | |
668 | ) { | |
669 | auto file = std::shared_ptr<ReadableFile>(new ReadableFile(pool,rgw)); | |
670 | RETURN_NOT_OK(file->impl_->Open(path)); | |
671 | return file; | |
672 | } | |
673 | ||
674 | Result<std::shared_ptr<ReadableFile>> ReadableFile::Open(int fd, MemoryPool* pool) { | |
675 | NOT_IMPLEMENT; | |
676 | auto file = std::shared_ptr<ReadableFile>(new ReadableFile(pool,0)); | |
677 | RETURN_NOT_OK(file->impl_->Open(fd)); | |
678 | return file; | |
679 | } | |
680 | ||
681 | Status ReadableFile::DoClose() { return impl_->Close(); } | |
682 | ||
683 | bool ReadableFile::closed() const { return !impl_->is_open(); } | |
684 | ||
685 | Status ReadableFile::WillNeed(const std::vector<ReadRange>& ranges) { | |
686 | return impl_->WillNeed(ranges); | |
687 | } | |
688 | ||
689 | Result<int64_t> ReadableFile::DoTell() const { return impl_->Tell(); } | |
690 | ||
691 | Result<int64_t> ReadableFile::DoRead(int64_t nbytes, void* out) { | |
692 | return impl_->IMPL->Read(nbytes, out); | |
693 | } | |
694 | ||
695 | Result<int64_t> ReadableFile::DoReadAt(int64_t position, int64_t nbytes, void* out) { | |
696 | return impl_->IMPL->ReadAt(position, nbytes, out); | |
697 | } | |
698 | ||
699 | Result<std::shared_ptr<Buffer>> ReadableFile::DoReadAt(int64_t position, int64_t nbytes) { | |
700 | return impl_->ReadBufferAt(position, nbytes); | |
701 | } | |
702 | ||
703 | Result<std::shared_ptr<Buffer>> ReadableFile::DoRead(int64_t nbytes) { | |
704 | return impl_->ReadBuffer(nbytes); | |
705 | } | |
706 | ||
707 | Result<int64_t> ReadableFile::DoGetSize() { return impl_->IMPL->size(); } | |
708 | ||
709 | Status ReadableFile::DoSeek(int64_t pos) { return impl_->IMPL->Seek(pos); } | |
710 | ||
711 | int ReadableFile::file_descriptor() const { return impl_->IMPL->fd(); } | |
712 | ||
713 | } // namepace ceph | |
714 | } // namespace io | |
715 | } // namespace arrow | |
716 | ||
717 | ||
718 | namespace parquet { | |
719 | ||
720 | class ColumnReader; | |
721 | class FileMetaData; | |
722 | class PageReader; | |
723 | class RandomAccessSource; | |
724 | class RowGroupMetaData; | |
725 | ||
726 | namespace ceph { | |
727 | class PARQUET_EXPORT RowGroupReader { | |
728 | public: | |
729 | // Forward declare a virtual class 'Contents' to aid dependency injection and more | |
730 | // easily create test fixtures | |
731 | // An implementation of the Contents class is defined in the .cc file | |
732 | struct Contents { | |
733 | virtual ~Contents() {} | |
734 | virtual std::unique_ptr<PageReader> GetColumnPageReader(int i) = 0; | |
735 | virtual const RowGroupMetaData* metadata() const = 0; | |
736 | virtual const ReaderProperties* properties() const = 0; | |
737 | }; | |
738 | ||
739 | explicit RowGroupReader(std::unique_ptr<Contents> contents); | |
740 | ||
741 | // Returns the rowgroup metadata | |
742 | const RowGroupMetaData* metadata() const; | |
743 | ||
744 | // Construct a ColumnReader for the indicated row group-relative | |
745 | // column. Ownership is shared with the RowGroupReader. | |
746 | std::shared_ptr<ColumnReader> Column(int i); | |
747 | ||
748 | std::unique_ptr<PageReader> GetColumnPageReader(int i); | |
749 | ||
750 | private: | |
751 | // Holds a pointer to an instance of Contents implementation | |
752 | std::unique_ptr<Contents> contents_; | |
753 | }; | |
754 | ||
755 | class PARQUET_EXPORT ParquetFileReader { | |
756 | public: | |
757 | // Declare a virtual class 'Contents' to aid dependency injection and more | |
758 | // easily create test fixtures | |
759 | // An implementation of the Contents class is defined in the .cc file | |
760 | struct PARQUET_EXPORT Contents { | |
761 | static std::unique_ptr<Contents> Open( | |
762 | std::shared_ptr<::arrow::io::RandomAccessFile> source, | |
763 | const ReaderProperties& props = default_reader_properties(), | |
764 | std::shared_ptr<FileMetaData> metadata = NULLPTR); | |
765 | ||
766 | virtual ~Contents() = default; | |
767 | // Perform any cleanup associated with the file contents | |
768 | virtual void Close() = 0; | |
769 | virtual std::shared_ptr<RowGroupReader> GetRowGroup(int i) = 0; | |
770 | virtual std::shared_ptr<FileMetaData> metadata() const = 0; | |
771 | }; | |
772 | ||
773 | ParquetFileReader(); | |
774 | ~ParquetFileReader(); | |
775 | ||
776 | // Create a reader from some implementation of parquet-cpp's generic file | |
777 | // input interface | |
778 | // | |
779 | // If you cannot provide exclusive access to your file resource, create a | |
780 | // subclass of RandomAccessSource that wraps the shared resource | |
781 | ARROW_DEPRECATED("Use arrow::io::RandomAccessFile version") | |
782 | static std::unique_ptr<ParquetFileReader> Open( | |
783 | std::unique_ptr<RandomAccessSource> source, | |
784 | const ReaderProperties& props = default_reader_properties(), | |
785 | std::shared_ptr<FileMetaData> metadata = NULLPTR); | |
786 | ||
787 | // Create a file reader instance from an Arrow file object. Thread-safety is | |
788 | // the responsibility of the file implementation | |
789 | static std::unique_ptr<ParquetFileReader> Open( | |
790 | std::shared_ptr<::arrow::io::RandomAccessFile> source, | |
791 | const ReaderProperties& props = default_reader_properties(), | |
792 | std::shared_ptr<FileMetaData> metadata = NULLPTR); | |
793 | ||
794 | // API Convenience to open a serialized Parquet file on disk, using Arrow IO | |
795 | // interfaces. | |
796 | static std::unique_ptr<ParquetFileReader> OpenFile( | |
797 | const std::string& path,s3selectEngine::rgw_s3select_api* rgw, bool memory_map = true, | |
798 | const ReaderProperties& props = default_reader_properties(), | |
799 | std::shared_ptr<FileMetaData> metadata = NULLPTR | |
800 | ); | |
801 | ||
802 | void Open(std::unique_ptr<Contents> contents); | |
803 | void Close(); | |
804 | ||
805 | // The RowGroupReader is owned by the FileReader | |
806 | std::shared_ptr<RowGroupReader> RowGroup(int i); | |
807 | ||
808 | // Returns the file metadata. Only one instance is ever created | |
809 | std::shared_ptr<FileMetaData> metadata() const; | |
810 | ||
811 | /// Pre-buffer the specified column indices in all row groups. | |
812 | /// | |
813 | /// Readers can optionally call this to cache the necessary slices | |
814 | /// of the file in-memory before deserialization. Arrow readers can | |
815 | /// automatically do this via an option. This is intended to | |
816 | /// increase performance when reading from high-latency filesystems | |
817 | /// (e.g. Amazon S3). | |
818 | /// | |
819 | /// After calling this, creating readers for row groups/column | |
820 | /// indices that were not buffered may fail. Creating multiple | |
821 | /// readers for the a subset of the buffered regions is | |
822 | /// acceptable. This may be called again to buffer a different set | |
823 | /// of row groups/columns. | |
824 | /// | |
825 | /// If memory usage is a concern, note that data will remain | |
826 | /// buffered in memory until either \a PreBuffer() is called again, | |
827 | /// or the reader itself is destructed. Reading - and buffering - | |
828 | /// only one row group at a time may be useful. | |
829 | void PreBuffer(const std::vector<int>& row_groups, | |
830 | const std::vector<int>& column_indices, | |
831 | const ::arrow::io::IOContext& ctx, | |
832 | const ::arrow::io::CacheOptions& options); | |
833 | ||
834 | private: | |
835 | // Holds a pointer to an instance of Contents implementation | |
836 | std::unique_ptr<Contents> contents_; | |
837 | }; | |
838 | ||
839 | // Read only Parquet file metadata | |
840 | std::shared_ptr<FileMetaData> PARQUET_EXPORT | |
841 | ReadMetaData(const std::shared_ptr<::arrow::io::RandomAccessFile>& source); | |
842 | ||
843 | /// \brief Scan all values in file. Useful for performance testing | |
844 | /// \param[in] columns the column numbers to scan. If empty scans all | |
845 | /// \param[in] column_batch_size number of values to read at a time when scanning column | |
846 | /// \param[in] reader a ParquetFileReader instance | |
847 | /// \return number of semantic rows in file | |
848 | PARQUET_EXPORT | |
849 | int64_t ScanFileContents(std::vector<int> columns, const int32_t column_batch_size, | |
850 | ParquetFileReader* reader); | |
851 | ||
852 | }//namespace ceph | |
853 | }//namespace parquet | |
854 | ||
855 | ||
856 | namespace parquet { | |
857 | ||
858 | namespace ceph { | |
859 | ||
860 | // PARQUET-978: Minimize footer reads by reading 64 KB from the end of the file | |
861 | static constexpr int64_t kDefaultFooterReadSize = 64 * 1024; | |
862 | static constexpr uint32_t kFooterSize = 8; | |
863 | ||
864 | // For PARQUET-816 | |
865 | static constexpr int64_t kMaxDictHeaderSize = 100; | |
866 | ||
867 | // ---------------------------------------------------------------------- | |
868 | // RowGroupReader public API | |
869 | ||
870 | RowGroupReader::RowGroupReader(std::unique_ptr<Contents> contents) | |
871 | : contents_(std::move(contents)) {} | |
872 | ||
873 | std::shared_ptr<ColumnReader> RowGroupReader::Column(int i) { | |
874 | if (i >= metadata()->num_columns()) { | |
875 | std::stringstream ss; | |
876 | ss << "Trying to read column index " << i << " but row group metadata has only " | |
877 | << metadata()->num_columns() << " columns"; | |
878 | throw ParquetException(ss.str()); | |
879 | } | |
880 | const ColumnDescriptor* descr = metadata()->schema()->Column(i); | |
881 | ||
882 | std::unique_ptr<PageReader> page_reader = contents_->GetColumnPageReader(i); | |
883 | return ColumnReader::Make( | |
884 | descr, std::move(page_reader), | |
885 | const_cast<ReaderProperties*>(contents_->properties())->memory_pool()); | |
886 | } | |
887 | ||
888 | std::unique_ptr<PageReader> RowGroupReader::GetColumnPageReader(int i) { | |
889 | if (i >= metadata()->num_columns()) { | |
890 | std::stringstream ss; | |
891 | ss << "Trying to read column index " << i << " but row group metadata has only " | |
892 | << metadata()->num_columns() << " columns"; | |
893 | throw ParquetException(ss.str()); | |
894 | } | |
895 | return contents_->GetColumnPageReader(i); | |
896 | } | |
897 | ||
898 | // Returns the rowgroup metadata | |
899 | const RowGroupMetaData* RowGroupReader::metadata() const { return contents_->metadata(); } | |
900 | ||
901 | /// Compute the section of the file that should be read for the given | |
902 | /// row group and column chunk. | |
903 | ::arrow::io::ReadRange ComputeColumnChunkRange(FileMetaData* file_metadata, | |
904 | int64_t source_size, int row_group_index, | |
905 | int column_index) { | |
906 | auto row_group_metadata = file_metadata->RowGroup(row_group_index); | |
907 | auto column_metadata = row_group_metadata->ColumnChunk(column_index); | |
908 | ||
909 | int64_t col_start = column_metadata->data_page_offset(); | |
910 | if (column_metadata->has_dictionary_page() && | |
911 | column_metadata->dictionary_page_offset() > 0 && | |
912 | col_start > column_metadata->dictionary_page_offset()) { | |
913 | col_start = column_metadata->dictionary_page_offset(); | |
914 | } | |
915 | ||
916 | int64_t col_length = column_metadata->total_compressed_size(); | |
917 | // PARQUET-816 workaround for old files created by older parquet-mr | |
918 | const ApplicationVersion& version = file_metadata->writer_version(); | |
919 | if (version.VersionLt(ApplicationVersion::PARQUET_816_FIXED_VERSION())) { | |
920 | // The Parquet MR writer had a bug in 1.2.8 and below where it didn't include the | |
921 | // dictionary page header size in total_compressed_size and total_uncompressed_size | |
922 | // (see IMPALA-694). We add padding to compensate. | |
923 | int64_t bytes_remaining = source_size - (col_start + col_length); | |
924 | int64_t padding = std::min<int64_t>(kMaxDictHeaderSize, bytes_remaining); | |
925 | col_length += padding; | |
926 | } | |
927 | ||
928 | return {col_start, col_length}; | |
929 | } | |
930 | ||
931 | // RowGroupReader::Contents implementation for the Parquet file specification | |
932 | class SerializedRowGroup : public RowGroupReader::Contents { | |
933 | public: | |
934 | SerializedRowGroup(std::shared_ptr<ArrowInputFile> source, | |
935 | std::shared_ptr<::arrow::io::internal::ReadRangeCache> cached_source, | |
936 | int64_t source_size, FileMetaData* file_metadata, | |
937 | int row_group_number, const ReaderProperties& props, | |
938 | std::shared_ptr<parquet::InternalFileDecryptor> file_decryptor = nullptr) | |
939 | : source_(std::move(source)), | |
940 | cached_source_(std::move(cached_source)), | |
941 | source_size_(source_size), | |
942 | file_metadata_(file_metadata), | |
943 | properties_(props), | |
944 | row_group_ordinal_(row_group_number), | |
945 | file_decryptor_(file_decryptor) { | |
946 | row_group_metadata_ = file_metadata->RowGroup(row_group_number); | |
947 | } | |
948 | ||
949 | const RowGroupMetaData* metadata() const override { return row_group_metadata_.get(); } | |
950 | ||
951 | const ReaderProperties* properties() const override { return &properties_; } | |
952 | ||
953 | std::unique_ptr<PageReader> GetColumnPageReader(int i) override { | |
954 | // Read column chunk from the file | |
955 | auto col = row_group_metadata_->ColumnChunk(i); | |
956 | ||
957 | ::arrow::io::ReadRange col_range = | |
958 | ComputeColumnChunkRange(file_metadata_, source_size_, row_group_ordinal_, i); | |
959 | std::shared_ptr<ArrowInputStream> stream; | |
960 | if (cached_source_) { | |
961 | // PARQUET-1698: if read coalescing is enabled, read from pre-buffered | |
962 | // segments. | |
963 | PARQUET_ASSIGN_OR_THROW(auto buffer, cached_source_->Read(col_range)); | |
964 | stream = std::make_shared<::arrow::io::BufferReader>(buffer); | |
965 | } else { | |
966 | stream = properties_.GetStream(source_, col_range.offset, col_range.length); | |
967 | } | |
968 | ||
969 | std::unique_ptr<ColumnCryptoMetaData> crypto_metadata = col->crypto_metadata(); | |
970 | ||
971 | // Column is encrypted only if crypto_metadata exists. | |
972 | if (!crypto_metadata) { | |
973 | return PageReader::Open(stream, col->num_values(), col->compression(), | |
974 | properties_.memory_pool()); | |
975 | } | |
976 | ||
977 | if (file_decryptor_ == nullptr) { | |
978 | throw ParquetException("RowGroup is noted as encrypted but no file decryptor"); | |
979 | } | |
980 | ||
981 | constexpr auto kEncryptedRowGroupsLimit = 32767; | |
982 | if (i > kEncryptedRowGroupsLimit) { | |
983 | throw ParquetException("Encrypted files cannot contain more than 32767 row groups"); | |
984 | } | |
985 | ||
986 | // The column is encrypted | |
987 | std::shared_ptr<::parquet::Decryptor> meta_decryptor; | |
988 | std::shared_ptr<Decryptor> data_decryptor; | |
989 | // The column is encrypted with footer key | |
990 | if (crypto_metadata->encrypted_with_footer_key()) { | |
991 | meta_decryptor = file_decryptor_->GetFooterDecryptorForColumnMeta(); | |
992 | data_decryptor = file_decryptor_->GetFooterDecryptorForColumnData(); | |
993 | ||
994 | CryptoContext ctx(col->has_dictionary_page(), row_group_ordinal_, | |
995 | static_cast<int16_t>(i), meta_decryptor, data_decryptor); | |
996 | return PageReader::Open(stream, col->num_values(), col->compression(), | |
1e59de90 TL |
997 | #if ARROW_VERSION_MAJOR > 8 |
998 | false, | |
999 | #endif | |
20effc67 TL |
1000 | properties_.memory_pool(), &ctx); |
1001 | } | |
1002 | ||
1003 | // The column is encrypted with its own key | |
1004 | std::string column_key_metadata = crypto_metadata->key_metadata(); | |
1005 | const std::string column_path = crypto_metadata->path_in_schema()->ToDotString(); | |
1006 | ||
1007 | meta_decryptor = | |
1008 | file_decryptor_->GetColumnMetaDecryptor(column_path, column_key_metadata); | |
1009 | data_decryptor = | |
1010 | file_decryptor_->GetColumnDataDecryptor(column_path, column_key_metadata); | |
1011 | ||
1012 | CryptoContext ctx(col->has_dictionary_page(), row_group_ordinal_, | |
1013 | static_cast<int16_t>(i), meta_decryptor, data_decryptor); | |
1014 | return PageReader::Open(stream, col->num_values(), col->compression(), | |
1e59de90 TL |
1015 | #if ARROW_VERSION_MAJOR > 8 |
1016 | false, | |
1017 | #endif | |
20effc67 TL |
1018 | properties_.memory_pool(), &ctx); |
1019 | } | |
1020 | ||
1021 | private: | |
1022 | std::shared_ptr<ArrowInputFile> source_; | |
1023 | // Will be nullptr if PreBuffer() is not called. | |
1024 | std::shared_ptr<::arrow::io::internal::ReadRangeCache> cached_source_; | |
1025 | int64_t source_size_; | |
1026 | FileMetaData* file_metadata_; | |
1027 | std::unique_ptr<RowGroupMetaData> row_group_metadata_; | |
1028 | ReaderProperties properties_; | |
1029 | int row_group_ordinal_; | |
1030 | std::shared_ptr<InternalFileDecryptor> file_decryptor_; | |
1031 | }; | |
1032 | ||
1033 | // ---------------------------------------------------------------------- | |
1034 | // SerializedFile: An implementation of ParquetFileReader::Contents that deals | |
1035 | // with the Parquet file structure, Thrift deserialization, and other internal | |
1036 | // matters | |
1037 | ||
1038 | // This class takes ownership of the provided data source | |
1039 | class SerializedFile : public ParquetFileReader::Contents { | |
1040 | public: | |
1041 | SerializedFile(std::shared_ptr<ArrowInputFile> source, | |
1042 | const ReaderProperties& props = default_reader_properties()) | |
1043 | : source_(std::move(source)), properties_(props) { | |
1044 | PARQUET_ASSIGN_OR_THROW(source_size_, source_->GetSize()); | |
1045 | } | |
1046 | ||
1047 | ~SerializedFile() override { | |
1048 | try { | |
1049 | Close(); | |
1050 | } catch (...) { | |
1051 | } | |
1052 | } | |
1053 | ||
1054 | void Close() override { | |
1055 | if (file_decryptor_) file_decryptor_->WipeOutDecryptionKeys(); | |
1056 | } | |
1057 | ||
1058 | std::shared_ptr<RowGroupReader> GetRowGroup(int i) override { | |
1059 | std::unique_ptr<SerializedRowGroup> contents( | |
1060 | new SerializedRowGroup(source_, cached_source_, source_size_, | |
1061 | file_metadata_.get(), i, properties_, file_decryptor_)); | |
1062 | return std::make_shared<RowGroupReader>(std::move(contents)); | |
1063 | } | |
1064 | ||
1065 | std::shared_ptr<FileMetaData> metadata() const override { return file_metadata_; } | |
1066 | ||
1067 | void set_metadata(std::shared_ptr<FileMetaData> metadata) { | |
1068 | file_metadata_ = std::move(metadata); | |
1069 | } | |
1070 | ||
1071 | void PreBuffer(const std::vector<int>& row_groups, | |
1072 | const std::vector<int>& column_indices, | |
1073 | const ::arrow::io::IOContext& ctx, | |
1074 | const ::arrow::io::CacheOptions& options) { | |
1075 | cached_source_ = | |
1076 | std::make_shared<::arrow::io::internal::ReadRangeCache>(source_, ctx, options); | |
1077 | //std::vector<arrow::io::ReadRange> ranges; | |
1078 | std::vector<::arrow::io::ReadRange> ranges; | |
1079 | for (int row : row_groups) { | |
1080 | for (int col : column_indices) { | |
1081 | ranges.push_back( | |
1082 | ComputeColumnChunkRange(file_metadata_.get(), source_size_, row, col)); | |
1083 | } | |
1084 | } | |
1085 | PARQUET_THROW_NOT_OK(cached_source_->Cache(ranges)); | |
1086 | } | |
1087 | ||
1088 | void ParseMetaData() { | |
1089 | if (source_size_ == 0) { | |
1090 | throw ParquetInvalidOrCorruptedFileException("Parquet file size is 0 bytes"); | |
1091 | } else if (source_size_ < kFooterSize) { | |
1092 | throw ParquetInvalidOrCorruptedFileException( | |
1093 | "Parquet file size is ", source_size_, | |
1094 | " bytes, smaller than the minimum file footer (", kFooterSize, " bytes)"); | |
1095 | } | |
1096 | ||
1097 | int64_t footer_read_size = std::min(source_size_, kDefaultFooterReadSize); | |
1098 | PARQUET_ASSIGN_OR_THROW( | |
1099 | auto footer_buffer, | |
1100 | source_->ReadAt(source_size_ - footer_read_size, footer_read_size)); | |
1101 | ||
1102 | // Check if all bytes are read. Check if last 4 bytes read have the magic bits | |
1103 | if (footer_buffer->size() != footer_read_size || | |
1104 | (memcmp(footer_buffer->data() + footer_read_size - 4, kParquetMagic, 4) != 0 && | |
1105 | memcmp(footer_buffer->data() + footer_read_size - 4, kParquetEMagic, 4) != 0)) { | |
1106 | throw ParquetInvalidOrCorruptedFileException( | |
1107 | "Parquet magic bytes not found in footer. Either the file is corrupted or this " | |
1108 | "is not a parquet file."); | |
1109 | } | |
1110 | ||
1111 | if (memcmp(footer_buffer->data() + footer_read_size - 4, kParquetEMagic, 4) == 0) { | |
1112 | // Encrypted file with Encrypted footer. | |
1113 | ParseMetaDataOfEncryptedFileWithEncryptedFooter(footer_buffer, footer_read_size); | |
1114 | return; | |
1115 | } | |
1116 | ||
1117 | // No encryption or encryption with plaintext footer mode. | |
1118 | std::shared_ptr<Buffer> metadata_buffer; | |
1119 | uint32_t metadata_len, read_metadata_len; | |
1120 | ParseUnencryptedFileMetadata(footer_buffer, footer_read_size, &metadata_buffer, | |
1121 | &metadata_len, &read_metadata_len); | |
1122 | ||
1123 | auto file_decryption_properties = properties_.file_decryption_properties().get(); | |
1124 | if (!file_metadata_->is_encryption_algorithm_set()) { // Non encrypted file. | |
1125 | if (file_decryption_properties != nullptr) { | |
1126 | if (!file_decryption_properties->plaintext_files_allowed()) { | |
1127 | throw ParquetException("Applying decryption properties on plaintext file"); | |
1128 | } | |
1129 | } | |
1130 | } else { | |
1131 | // Encrypted file with plaintext footer mode. | |
1132 | ParseMetaDataOfEncryptedFileWithPlaintextFooter( | |
1133 | file_decryption_properties, metadata_buffer, metadata_len, read_metadata_len); | |
1134 | } | |
1135 | } | |
1136 | ||
1137 | private: | |
1138 | std::shared_ptr<ArrowInputFile> source_; | |
1139 | std::shared_ptr<::arrow::io::internal::ReadRangeCache> cached_source_; | |
1140 | int64_t source_size_; | |
1141 | std::shared_ptr<FileMetaData> file_metadata_; | |
1142 | ReaderProperties properties_; | |
1143 | ||
1144 | std::shared_ptr<::parquet::InternalFileDecryptor> file_decryptor_; | |
1145 | ||
1146 | void ParseUnencryptedFileMetadata(const std::shared_ptr<Buffer>& footer_buffer, | |
1147 | int64_t footer_read_size, | |
1148 | std::shared_ptr<Buffer>* metadata_buffer, | |
1149 | uint32_t* metadata_len, uint32_t* read_metadata_len); | |
1150 | ||
1151 | std::string HandleAadPrefix(FileDecryptionProperties* file_decryption_properties, | |
1152 | EncryptionAlgorithm& algo); | |
1153 | ||
1154 | void ParseMetaDataOfEncryptedFileWithPlaintextFooter( | |
1155 | FileDecryptionProperties* file_decryption_properties, | |
1156 | const std::shared_ptr<Buffer>& metadata_buffer, uint32_t metadata_len, | |
1157 | uint32_t read_metadata_len); | |
1158 | ||
1159 | void ParseMetaDataOfEncryptedFileWithEncryptedFooter( | |
1160 | const std::shared_ptr<Buffer>& footer_buffer, int64_t footer_read_size); | |
1161 | }; | |
1162 | ||
1163 | void SerializedFile::ParseUnencryptedFileMetadata( | |
1164 | const std::shared_ptr<Buffer>& footer_buffer, int64_t footer_read_size, | |
1165 | std::shared_ptr<Buffer>* metadata_buffer, uint32_t* metadata_len, | |
1166 | uint32_t* read_metadata_len) { | |
1167 | *metadata_len = ::arrow::util::SafeLoadAs<uint32_t>( | |
1168 | reinterpret_cast<const uint8_t*>(footer_buffer->data()) + footer_read_size - | |
1169 | kFooterSize); | |
1170 | int64_t metadata_start = source_size_ - kFooterSize - *metadata_len; | |
1171 | if (*metadata_len > source_size_ - kFooterSize) { | |
1172 | throw ParquetInvalidOrCorruptedFileException( | |
1173 | "Parquet file size is ", source_size_, | |
1174 | " bytes, smaller than the size reported by metadata (", metadata_len, "bytes)"); | |
1175 | } | |
1176 | ||
1177 | // Check if the footer_buffer contains the entire metadata | |
1178 | if (footer_read_size >= (*metadata_len + kFooterSize)) { | |
1179 | *metadata_buffer = SliceBuffer( | |
1180 | footer_buffer, footer_read_size - *metadata_len - kFooterSize, *metadata_len); | |
1181 | } else { | |
1182 | PARQUET_ASSIGN_OR_THROW(*metadata_buffer, | |
1183 | source_->ReadAt(metadata_start, *metadata_len)); | |
1184 | if ((*metadata_buffer)->size() != *metadata_len) { | |
1185 | throw ParquetException("Failed reading metadata buffer (requested " + | |
1186 | std::to_string(*metadata_len) + " bytes but got " + | |
1187 | std::to_string((*metadata_buffer)->size()) + " bytes)"); | |
1188 | } | |
1189 | } | |
1190 | ||
1191 | *read_metadata_len = *metadata_len; | |
1192 | file_metadata_ = FileMetaData::Make((*metadata_buffer)->data(), read_metadata_len); | |
1193 | } | |
1194 | ||
1195 | void SerializedFile::ParseMetaDataOfEncryptedFileWithEncryptedFooter( | |
1196 | const std::shared_ptr<Buffer>& footer_buffer, int64_t footer_read_size) { | |
1197 | // encryption with encrypted footer | |
1198 | // both metadata & crypto metadata length | |
1199 | uint32_t footer_len = ::arrow::util::SafeLoadAs<uint32_t>( | |
1200 | reinterpret_cast<const uint8_t*>(footer_buffer->data()) + footer_read_size - | |
1201 | kFooterSize); | |
1202 | int64_t crypto_metadata_start = source_size_ - kFooterSize - footer_len; | |
1203 | if (kFooterSize + footer_len > source_size_) { | |
1204 | throw ParquetInvalidOrCorruptedFileException( | |
1205 | "Parquet file size is ", source_size_, | |
1206 | " bytes, smaller than the size reported by footer's (", footer_len, "bytes)"); | |
1207 | } | |
1208 | std::shared_ptr<Buffer> crypto_metadata_buffer; | |
1209 | // Check if the footer_buffer contains the entire metadata | |
1210 | if (footer_read_size >= (footer_len + kFooterSize)) { | |
1211 | crypto_metadata_buffer = SliceBuffer( | |
1212 | footer_buffer, footer_read_size - footer_len - kFooterSize, footer_len); | |
1213 | } else { | |
1214 | PARQUET_ASSIGN_OR_THROW(crypto_metadata_buffer, | |
1215 | source_->ReadAt(crypto_metadata_start, footer_len)); | |
1216 | if (crypto_metadata_buffer->size() != footer_len) { | |
1217 | throw ParquetException("Failed reading encrypted metadata buffer (requested " + | |
1218 | std::to_string(footer_len) + " bytes but got " + | |
1219 | std::to_string(crypto_metadata_buffer->size()) + " bytes)"); | |
1220 | } | |
1221 | } | |
1222 | auto file_decryption_properties = properties_.file_decryption_properties().get(); | |
1223 | if (file_decryption_properties == nullptr) { | |
1224 | throw ParquetException( | |
1225 | "Could not read encrypted metadata, no decryption found in reader's properties"); | |
1226 | } | |
1227 | uint32_t crypto_metadata_len = footer_len; | |
1228 | std::shared_ptr<FileCryptoMetaData> file_crypto_metadata = | |
1229 | FileCryptoMetaData::Make(crypto_metadata_buffer->data(), &crypto_metadata_len); | |
1230 | // Handle AAD prefix | |
1231 | EncryptionAlgorithm algo = file_crypto_metadata->encryption_algorithm(); | |
1232 | std::string file_aad = HandleAadPrefix(file_decryption_properties, algo); | |
1233 | file_decryptor_ = std::make_shared<::parquet::InternalFileDecryptor>( | |
1234 | file_decryption_properties, file_aad, algo.algorithm, | |
1235 | file_crypto_metadata->key_metadata(), properties_.memory_pool()); | |
1236 | ||
1237 | int64_t metadata_offset = source_size_ - kFooterSize - footer_len + crypto_metadata_len; | |
1238 | uint32_t metadata_len = footer_len - crypto_metadata_len; | |
1239 | PARQUET_ASSIGN_OR_THROW(auto metadata_buffer, | |
1240 | source_->ReadAt(metadata_offset, metadata_len)); | |
1241 | if (metadata_buffer->size() != metadata_len) { | |
1242 | throw ParquetException("Failed reading metadata buffer (requested " + | |
1243 | std::to_string(metadata_len) + " bytes but got " + | |
1244 | std::to_string(metadata_buffer->size()) + " bytes)"); | |
1245 | } | |
1246 | ||
1247 | file_metadata_ = | |
1e59de90 TL |
1248 | FileMetaData::Make(metadata_buffer->data(), &metadata_len, file_decryptor_); |
1249 | //FileMetaData::Make(metadata_buffer->data(), &metadata_len, default_reader_properties(), file_decryptor_); //version>9 | |
20effc67 TL |
1250 | } |
1251 | ||
1252 | void SerializedFile::ParseMetaDataOfEncryptedFileWithPlaintextFooter( | |
1253 | FileDecryptionProperties* file_decryption_properties, | |
1254 | const std::shared_ptr<Buffer>& metadata_buffer, uint32_t metadata_len, | |
1255 | uint32_t read_metadata_len) { | |
1256 | // Providing decryption properties in plaintext footer mode is not mandatory, for | |
1257 | // example when reading by legacy reader. | |
1258 | if (file_decryption_properties != nullptr) { | |
1259 | EncryptionAlgorithm algo = file_metadata_->encryption_algorithm(); | |
1260 | // Handle AAD prefix | |
1261 | std::string file_aad = HandleAadPrefix(file_decryption_properties, algo); | |
1262 | file_decryptor_ = std::make_shared<::parquet::InternalFileDecryptor>( | |
1263 | file_decryption_properties, file_aad, algo.algorithm, | |
1264 | file_metadata_->footer_signing_key_metadata(), properties_.memory_pool()); | |
1265 | // set the InternalFileDecryptor in the metadata as well, as it's used | |
1266 | // for signature verification and for ColumnChunkMetaData creation. | |
1267 | #if GAL_set_file_decryptor_declare_private | |
1268 | file_metadata_->set_file_decryptor(file_decryptor_); | |
1269 | #endif | |
1270 | if (file_decryption_properties->check_plaintext_footer_integrity()) { | |
1271 | if (metadata_len - read_metadata_len != | |
1272 | (parquet::encryption::kGcmTagLength + parquet::encryption::kNonceLength)) { | |
1273 | throw ParquetInvalidOrCorruptedFileException( | |
1274 | "Failed reading metadata for encryption signature (requested ", | |
1275 | parquet::encryption::kGcmTagLength + parquet::encryption::kNonceLength, | |
1276 | " bytes but have ", metadata_len - read_metadata_len, " bytes)"); | |
1277 | } | |
1278 | ||
1279 | if (!file_metadata_->VerifySignature(metadata_buffer->data() + read_metadata_len)) { | |
1280 | throw ParquetInvalidOrCorruptedFileException( | |
1281 | "Parquet crypto signature verification failed"); | |
1282 | } | |
1283 | } | |
1284 | } | |
1285 | } | |
1286 | ||
1287 | std::string SerializedFile::HandleAadPrefix( | |
1288 | FileDecryptionProperties* file_decryption_properties, EncryptionAlgorithm& algo) { | |
1289 | std::string aad_prefix_in_properties = file_decryption_properties->aad_prefix(); | |
1290 | std::string aad_prefix = aad_prefix_in_properties; | |
1291 | bool file_has_aad_prefix = algo.aad.aad_prefix.empty() ? false : true; | |
1292 | std::string aad_prefix_in_file = algo.aad.aad_prefix; | |
1293 | ||
1294 | if (algo.aad.supply_aad_prefix && aad_prefix_in_properties.empty()) { | |
1295 | throw ParquetException( | |
1296 | "AAD prefix used for file encryption, " | |
1297 | "but not stored in file and not supplied " | |
1298 | "in decryption properties"); | |
1299 | } | |
1300 | ||
1301 | if (file_has_aad_prefix) { | |
1302 | if (!aad_prefix_in_properties.empty()) { | |
1303 | if (aad_prefix_in_properties.compare(aad_prefix_in_file) != 0) { | |
1304 | throw ParquetException( | |
1305 | "AAD Prefix in file and in properties " | |
1306 | "is not the same"); | |
1307 | } | |
1308 | } | |
1309 | aad_prefix = aad_prefix_in_file; | |
1310 | std::shared_ptr<AADPrefixVerifier> aad_prefix_verifier = | |
1311 | file_decryption_properties->aad_prefix_verifier(); | |
1312 | if (aad_prefix_verifier != nullptr) aad_prefix_verifier->Verify(aad_prefix); | |
1313 | } else { | |
1314 | if (!algo.aad.supply_aad_prefix && !aad_prefix_in_properties.empty()) { | |
1315 | throw ParquetException( | |
1316 | "AAD Prefix set in decryption properties, but was not used " | |
1317 | "for file encryption"); | |
1318 | } | |
1319 | std::shared_ptr<AADPrefixVerifier> aad_prefix_verifier = | |
1320 | file_decryption_properties->aad_prefix_verifier(); | |
1321 | if (aad_prefix_verifier != nullptr) { | |
1322 | throw ParquetException( | |
1323 | "AAD Prefix Verifier is set, but AAD Prefix not found in file"); | |
1324 | } | |
1325 | } | |
1326 | return aad_prefix + algo.aad.aad_file_unique; | |
1327 | } | |
1328 | ||
1329 | // ---------------------------------------------------------------------- | |
1330 | // ParquetFileReader public API | |
1331 | ||
1332 | ParquetFileReader::ParquetFileReader() {} | |
1333 | ||
1334 | ParquetFileReader::~ParquetFileReader() { | |
1335 | try { | |
1336 | Close(); | |
1337 | } catch (...) { | |
1338 | } | |
1339 | } | |
1340 | ||
1341 | // Open the file. If no metadata is passed, it is parsed from the footer of | |
1342 | // the file | |
1343 | std::unique_ptr<ParquetFileReader::Contents> ParquetFileReader::Contents::Open( | |
1344 | std::shared_ptr<ArrowInputFile> source, const ReaderProperties& props, | |
1345 | std::shared_ptr<FileMetaData> metadata) { | |
1346 | std::unique_ptr<ParquetFileReader::Contents> result( | |
1347 | new SerializedFile(std::move(source), props)); | |
1348 | ||
1349 | // Access private methods here, but otherwise unavailable | |
1350 | SerializedFile* file = static_cast<SerializedFile*>(result.get()); | |
1351 | ||
1352 | if (metadata == nullptr) { | |
1353 | // Validates magic bytes, parses metadata, and initializes the SchemaDescriptor | |
1354 | file->ParseMetaData(); | |
1355 | } else { | |
1356 | file->set_metadata(std::move(metadata)); | |
1357 | } | |
1358 | ||
1359 | return result; | |
1360 | } | |
1361 | ||
1362 | std::unique_ptr<ParquetFileReader> ParquetFileReader::Open( | |
1363 | std::shared_ptr<::arrow::io::RandomAccessFile> source, const ReaderProperties& props, | |
1364 | std::shared_ptr<FileMetaData> metadata) { | |
1365 | auto contents = SerializedFile::Open(std::move(source), props, std::move(metadata)); | |
1366 | std::unique_ptr<ParquetFileReader> result(new ParquetFileReader()); | |
1367 | result->Open(std::move(contents)); | |
1368 | return result; | |
1369 | } | |
1370 | ||
1371 | #if GAL_NOT_IMPLEMENTED | |
1372 | std::unique_ptr<ParquetFileReader> ParquetFileReader::Open( | |
1373 | std::unique_ptr<RandomAccessSource> source, const ReaderProperties& props, | |
1374 | std::shared_ptr<FileMetaData> metadata) { | |
1375 | auto wrapper = std::make_shared<ParquetInputWrapper>(std::move(source)); | |
1376 | return Open(std::move(wrapper), props, std::move(metadata)); | |
1377 | } | |
1378 | #endif | |
1379 | ||
1380 | std::unique_ptr<ParquetFileReader> ParquetFileReader::OpenFile( | |
1381 | const std::string& path, s3selectEngine::rgw_s3select_api* rgw, bool memory_map, const ReaderProperties& props, | |
1382 | std::shared_ptr<FileMetaData> metadata) { | |
1383 | std::shared_ptr<::arrow::io::RandomAccessFile> source; | |
1384 | if (memory_map) { | |
1385 | PARQUET_ASSIGN_OR_THROW( | |
1386 | source, ::arrow::io::MemoryMappedFile::Open(path, ::arrow::io::FileMode::READ));//GAL change that also, or to remove? | |
1387 | } else { | |
1388 | PARQUET_ASSIGN_OR_THROW(source, | |
1389 | ::arrow::io::ceph::ReadableFile::Open(path, rgw, props.memory_pool())); | |
1390 | } | |
1391 | ||
1392 | return Open(std::move(source), props, std::move(metadata)); | |
1393 | } | |
1394 | ||
1395 | void ParquetFileReader::Open(std::unique_ptr<ParquetFileReader::Contents> contents) { | |
1396 | contents_ = std::move(contents); | |
1397 | } | |
1398 | ||
1399 | void ParquetFileReader::Close() { | |
1400 | if (contents_) { | |
1401 | contents_->Close(); | |
1402 | } | |
1403 | } | |
1404 | ||
1405 | std::shared_ptr<FileMetaData> ParquetFileReader::metadata() const { | |
1406 | return contents_->metadata(); | |
1407 | } | |
1408 | ||
1409 | std::shared_ptr<RowGroupReader> ParquetFileReader::RowGroup(int i) { | |
1410 | if (i >= metadata()->num_row_groups()) { | |
1411 | std::stringstream ss; | |
1412 | ss << "Trying to read row group " << i << " but file only has " | |
1413 | << metadata()->num_row_groups() << " row groups"; | |
1414 | throw ParquetException(ss.str()); | |
1415 | } | |
1416 | return contents_->GetRowGroup(i); | |
1417 | } | |
1418 | ||
1419 | void ParquetFileReader::PreBuffer(const std::vector<int>& row_groups, | |
1420 | const std::vector<int>& column_indices, | |
1421 | const ::arrow::io::IOContext& ctx, | |
1422 | const ::arrow::io::CacheOptions& options) { | |
1423 | // Access private methods here | |
1424 | SerializedFile* file = | |
1425 | ::arrow::internal::checked_cast<SerializedFile*>(contents_.get()); | |
1426 | file->PreBuffer(row_groups, column_indices, ctx, options); | |
1427 | } | |
1428 | ||
1429 | // ---------------------------------------------------------------------- | |
1430 | // File metadata helpers | |
1431 | ||
1432 | std::shared_ptr<FileMetaData> ReadMetaData( | |
1433 | const std::shared_ptr<::arrow::io::RandomAccessFile>& source) { | |
1434 | return ParquetFileReader::Open(source)->metadata(); | |
1435 | } | |
1436 | ||
1437 | // ---------------------------------------------------------------------- | |
1438 | // File scanner for performance testing | |
1439 | #if GAL_ScanAllValues_is_no_declare | |
1440 | int64_t ScanFileContents(std::vector<int> columns, const int32_t column_batch_size, | |
1441 | ParquetFileReader* reader) { | |
1442 | std::vector<int16_t> rep_levels(column_batch_size); | |
1443 | std::vector<int16_t> def_levels(column_batch_size); | |
1444 | ||
1445 | int num_columns = static_cast<int>(columns.size()); | |
1446 | ||
1447 | // columns are not specified explicitly. Add all columns | |
1448 | if (columns.size() == 0) { | |
1449 | num_columns = reader->metadata()->num_columns(); | |
1450 | columns.resize(num_columns); | |
1451 | for (int i = 0; i < num_columns; i++) { | |
1452 | columns[i] = i; | |
1453 | } | |
1454 | } | |
1455 | ||
1456 | std::vector<int64_t> total_rows(num_columns, 0); | |
1457 | ||
1458 | for (int r = 0; r < reader->metadata()->num_row_groups(); ++r) { | |
1459 | auto group_reader = reader->RowGroup(r); | |
1460 | int col = 0; | |
1461 | for (auto i : columns) { | |
1462 | std::shared_ptr<ColumnReader> col_reader = group_reader->Column(i); | |
1463 | size_t value_byte_size = GetTypeByteSize(col_reader->descr()->physical_type()); | |
1464 | std::vector<uint8_t> values(column_batch_size * value_byte_size); | |
1465 | ||
1466 | int64_t values_read = 0; | |
1467 | while (col_reader->HasNext()) { | |
1468 | int64_t levels_read = | |
1469 | ScanAllValues(column_batch_size, def_levels.data(), rep_levels.data(), | |
1470 | values.data(), &values_read, col_reader.get()); | |
1471 | if (col_reader->descr()->max_repetition_level() > 0) { | |
1472 | for (int64_t i = 0; i < levels_read; i++) { | |
1473 | if (rep_levels[i] == 0) { | |
1474 | total_rows[col]++; | |
1475 | } | |
1476 | } | |
1477 | } else { | |
1478 | total_rows[col] += levels_read; | |
1479 | } | |
1480 | } | |
1481 | col++; | |
1482 | } | |
1483 | } | |
1484 | ||
1485 | for (int i = 1; i < num_columns; ++i) { | |
1486 | if (total_rows[0] != total_rows[i]) { | |
1487 | throw ParquetException("Parquet error: Total rows among columns do not match"); | |
1488 | } | |
1489 | } | |
1490 | ||
1491 | return total_rows[0]; | |
1492 | } | |
1493 | #endif | |
1494 | ||
1495 | } //namespace ceph | |
1496 | } //namespace parquet | |
1497 | ||
1498 | /******************************************/ | |
1499 | /******************************************/ | |
1500 | /******************************************/ | |
1501 | class column_reader_wrap | |
1502 | { | |
1503 | ||
1504 | private: | |
1505 | ||
1506 | int64_t m_rownum; | |
1507 | parquet::Type::type m_type; | |
1508 | std::shared_ptr<parquet::ceph::RowGroupReader> m_row_group_reader; | |
1509 | int m_row_grouop_id; | |
1510 | uint16_t m_col_id; | |
1511 | parquet::ceph::ParquetFileReader* m_parquet_reader; | |
1512 | std::shared_ptr<parquet::ColumnReader> m_ColumnReader; | |
1513 | bool m_end_of_stream; | |
1514 | bool m_read_last_value; | |
1515 | ||
1516 | ||
1517 | public: | |
1518 | ||
1519 | enum class parquet_type | |
1520 | { | |
1e59de90 | 1521 | NA_TYPE, |
20effc67 TL |
1522 | STRING, |
1523 | INT32, | |
1524 | INT64, | |
1e59de90 | 1525 | FLOAT, |
20effc67 TL |
1526 | DOUBLE, |
1527 | TIMESTAMP, | |
1528 | PARQUET_NULL | |
1529 | }; | |
1530 | ||
1e59de90 | 1531 | struct parquet_value |
20effc67 TL |
1532 | { |
1533 | int64_t num; | |
1534 | char *str; //str is pointing to offset in string which is NOT null terminated. | |
1535 | uint16_t str_len; | |
1536 | double dbl; | |
1537 | parquet_type type; | |
1e59de90 TL |
1538 | |
1539 | parquet_value():type(parquet_type::NA_TYPE){} | |
1540 | }; | |
1541 | ||
1542 | typedef struct parquet_value parquet_value_t; | |
1543 | ||
1544 | enum class parquet_column_read_state {PARQUET_OUT_OF_RANGE,PARQUET_READ_OK}; | |
20effc67 TL |
1545 | |
1546 | private: | |
1547 | parquet_value_t m_last_value; | |
1548 | ||
1549 | public: | |
1550 | column_reader_wrap(std::unique_ptr<parquet::ceph::ParquetFileReader> & parquet_reader,uint16_t col_id); | |
1551 | ||
1552 | parquet::Type::type get_type(); | |
1553 | ||
1554 | bool HasNext();//TODO template | |
1555 | ||
1556 | int64_t ReadBatch(int64_t batch_size, int16_t* def_levels, int16_t* rep_levels, | |
1557 | parquet_value_t* values, int64_t* values_read); | |
1558 | ||
1559 | int64_t Skip(int64_t rows_to_skip); | |
1560 | ||
1e59de90 | 1561 | parquet_column_read_state Read(uint64_t rownum,parquet_value_t & value); |
20effc67 TL |
1562 | |
1563 | }; | |
1564 | ||
1565 | class parquet_file_parser | |
1566 | { | |
1567 | ||
1568 | public: | |
1569 | ||
1570 | typedef std::vector<std::pair<std::string, column_reader_wrap::parquet_type>> schema_t; | |
1571 | typedef std::set<uint16_t> column_pos_t; | |
1572 | typedef std::vector<column_reader_wrap::parquet_value_t> row_values_t; | |
1573 | ||
1574 | typedef column_reader_wrap::parquet_value_t parquet_value_t; | |
1575 | typedef column_reader_wrap::parquet_type parquet_type; | |
1576 | ||
1577 | private: | |
1578 | ||
1579 | std::string m_parquet_file_name; | |
1580 | uint32_t m_num_of_columms; | |
1581 | uint64_t m_num_of_rows; | |
1582 | uint64_t m_rownum; | |
1583 | schema_t m_schm; | |
1584 | int m_num_row_groups; | |
1585 | std::shared_ptr<parquet::FileMetaData> m_file_metadata; | |
1586 | std::unique_ptr<parquet::ceph::ParquetFileReader> m_parquet_reader; | |
1587 | std::vector<column_reader_wrap*> m_column_readers; | |
1588 | s3selectEngine::rgw_s3select_api* m_rgw_s3select_api; | |
1589 | ||
1590 | public: | |
1591 | ||
1592 | parquet_file_parser(std::string parquet_file_name,s3selectEngine::rgw_s3select_api* rgw_api) : | |
1593 | m_parquet_file_name(parquet_file_name), | |
1594 | m_num_of_columms(0), | |
1595 | m_num_of_rows(0), | |
1596 | m_rownum(0), | |
1597 | m_num_row_groups(0), | |
1598 | m_rgw_s3select_api(rgw_api) | |
1599 | ||
1600 | ||
1601 | { | |
1602 | load_meta_data(); | |
1603 | } | |
1604 | ||
1605 | ~parquet_file_parser() | |
1606 | { | |
1607 | for(auto r : m_column_readers) | |
1608 | { | |
1609 | delete r; | |
1610 | } | |
1611 | } | |
1612 | ||
1613 | int load_meta_data() | |
1614 | { | |
1615 | m_parquet_reader = parquet::ceph::ParquetFileReader::OpenFile(m_parquet_file_name,m_rgw_s3select_api,false); | |
1616 | m_file_metadata = m_parquet_reader->metadata(); | |
1617 | m_num_of_columms = m_parquet_reader->metadata()->num_columns(); | |
1618 | m_num_row_groups = m_file_metadata->num_row_groups(); | |
1619 | m_num_of_rows = m_file_metadata->num_rows(); | |
1620 | ||
1621 | for (uint32_t i = 0; i < m_num_of_columms; i++) | |
1622 | { | |
1623 | parquet::Type::type tp = m_file_metadata->schema()->Column(i)->physical_type(); | |
1624 | std::pair<std::string, column_reader_wrap::parquet_type> elm; | |
1625 | ||
1626 | switch (tp) | |
1627 | { | |
1628 | case parquet::Type::type::INT32: | |
1629 | elm = std::pair<std::string, column_reader_wrap::parquet_type>(m_file_metadata->schema()->Column(i)->name(), column_reader_wrap::parquet_type::INT32); | |
1630 | m_schm.push_back(elm); | |
1631 | break; | |
1632 | ||
1633 | case parquet::Type::type::INT64: | |
1634 | elm = std::pair<std::string, column_reader_wrap::parquet_type>(m_file_metadata->schema()->Column(i)->name(), column_reader_wrap::parquet_type::INT64); | |
1635 | m_schm.push_back(elm); | |
1636 | break; | |
1637 | ||
1e59de90 TL |
1638 | case parquet::Type::type::FLOAT: |
1639 | elm = std::pair<std::string, column_reader_wrap::parquet_type>(m_file_metadata->schema()->Column(i)->name(), column_reader_wrap::parquet_type::FLOAT); | |
1640 | m_schm.push_back(elm); | |
1641 | break; | |
1642 | ||
20effc67 TL |
1643 | case parquet::Type::type::DOUBLE: |
1644 | elm = std::pair<std::string, column_reader_wrap::parquet_type>(m_file_metadata->schema()->Column(i)->name(), column_reader_wrap::parquet_type::DOUBLE); | |
1645 | m_schm.push_back(elm); | |
1646 | break; | |
1647 | ||
1648 | case parquet::Type::type::BYTE_ARRAY: | |
1649 | elm = std::pair<std::string, column_reader_wrap::parquet_type>(m_file_metadata->schema()->Column(i)->name(), column_reader_wrap::parquet_type::STRING); | |
1650 | m_schm.push_back(elm); | |
1651 | break; | |
1652 | ||
1653 | default: | |
1654 | { | |
1655 | std::stringstream err; | |
1656 | err << "some parquet type not supported"; | |
1657 | throw std::runtime_error(err.str()); | |
1658 | } | |
1659 | } | |
1660 | ||
1661 | m_column_readers.push_back(new column_reader_wrap(m_parquet_reader,i)); | |
1662 | } | |
1663 | ||
1664 | return 0; | |
1665 | } | |
1666 | ||
1667 | bool end_of_stream() | |
1668 | { | |
1669 | ||
1e59de90 | 1670 | if (m_rownum > (m_num_of_rows-1)) |
20effc67 TL |
1671 | return true; |
1672 | return false; | |
1673 | } | |
1674 | ||
1675 | uint64_t get_number_of_rows() | |
1676 | { | |
1677 | return m_num_of_rows; | |
1678 | } | |
1679 | ||
1e59de90 TL |
1680 | uint64_t rownum() |
1681 | { | |
1682 | return m_rownum; | |
1683 | } | |
1684 | ||
20effc67 TL |
1685 | bool increase_rownum() |
1686 | { | |
1687 | if (end_of_stream()) | |
1688 | return false; | |
1689 | ||
1690 | m_rownum++; | |
1691 | return true; | |
1692 | } | |
1693 | ||
1694 | uint64_t get_rownum() | |
1695 | { | |
1696 | return m_rownum; | |
1697 | } | |
1698 | ||
1699 | uint32_t get_num_of_columns() | |
1700 | { | |
1701 | return m_num_of_columms; | |
1702 | } | |
1703 | ||
1704 | int get_column_values_by_positions(column_pos_t positions, row_values_t &row_values) | |
1705 | { | |
1706 | column_reader_wrap::parquet_value_t column_value; | |
1707 | row_values.clear(); | |
1708 | ||
1709 | for(auto col : positions) | |
1710 | { | |
1711 | if((col)>=m_num_of_columms) | |
1712 | {//TODO should verified upon syntax phase | |
1713 | //TODO throw exception | |
1714 | return -1; | |
1715 | } | |
1e59de90 TL |
1716 | auto status = m_column_readers[col]->Read(m_rownum,column_value); |
1717 | if(status == column_reader_wrap::parquet_column_read_state::PARQUET_OUT_OF_RANGE) return -1; | |
20effc67 TL |
1718 | row_values.push_back(column_value);//TODO intensive (should move) |
1719 | } | |
1720 | return 0; | |
1721 | } | |
1722 | ||
1723 | schema_t get_schema() | |
1724 | { | |
1725 | return m_schm; | |
1726 | } | |
1727 | }; | |
1728 | ||
1729 | /******************************************/ | |
1730 | ||
1731 | ||
1732 | column_reader_wrap::column_reader_wrap(std::unique_ptr<parquet::ceph::ParquetFileReader> & parquet_reader,uint16_t col_id): | |
1733 | m_rownum(-1), | |
1734 | m_type(parquet::Type::type::UNDEFINED), | |
1735 | m_row_grouop_id(0), | |
1736 | m_col_id(col_id), | |
1737 | m_end_of_stream(false), | |
1738 | m_read_last_value(false) | |
1739 | { | |
1740 | m_parquet_reader = parquet_reader.get(); | |
1741 | m_row_group_reader = m_parquet_reader->RowGroup(m_row_grouop_id); | |
1742 | m_ColumnReader = m_row_group_reader->Column(m_col_id); | |
1743 | } | |
1744 | ||
1745 | parquet::Type::type column_reader_wrap::get_type() | |
1746 | {//TODO if UNDEFINED | |
1747 | return m_parquet_reader->metadata()->schema()->Column(m_col_id)->physical_type(); | |
1748 | } | |
1749 | ||
1750 | bool column_reader_wrap::HasNext()//TODO template | |
1751 | { | |
1752 | parquet::Int32Reader* int32_reader; | |
1753 | parquet::Int64Reader* int64_reader; | |
1e59de90 | 1754 | parquet::FloatReader* float_reader; |
20effc67 TL |
1755 | parquet::DoubleReader* double_reader; |
1756 | parquet::ByteArrayReader* byte_array_reader; | |
1757 | ||
1758 | switch (get_type()) | |
1759 | { | |
1760 | case parquet::Type::type::INT32: | |
1761 | int32_reader = static_cast<parquet::Int32Reader *>(m_ColumnReader.get()); | |
1762 | return int32_reader->HasNext(); | |
1763 | break; | |
1764 | ||
1765 | case parquet::Type::type::INT64: | |
1766 | int64_reader = static_cast<parquet::Int64Reader *>(m_ColumnReader.get()); | |
1767 | return int64_reader->HasNext(); | |
1768 | break; | |
1769 | ||
1e59de90 TL |
1770 | case parquet::Type::type::FLOAT: |
1771 | float_reader = static_cast<parquet::FloatReader *>(m_ColumnReader.get()); | |
1772 | return float_reader->HasNext(); | |
1773 | break; | |
1774 | ||
20effc67 TL |
1775 | case parquet::Type::type::DOUBLE: |
1776 | double_reader = static_cast<parquet::DoubleReader *>(m_ColumnReader.get()); | |
1777 | return double_reader->HasNext(); | |
1778 | break; | |
1779 | ||
1780 | case parquet::Type::type::BYTE_ARRAY: | |
1781 | byte_array_reader = static_cast<parquet::ByteArrayReader *>(m_ColumnReader.get()); | |
1782 | return byte_array_reader->HasNext(); | |
1783 | break; | |
1784 | ||
1785 | default: | |
1e59de90 TL |
1786 | |
1787 | std::stringstream err; | |
1788 | err << "HasNext():" << "wrong type or type not exist" << std::endl; | |
1789 | throw std::runtime_error(err.str()); | |
1790 | ||
20effc67 TL |
1791 | return false; |
1792 | //TODO throw exception | |
1793 | } | |
1794 | ||
1795 | return false; | |
1796 | } | |
1797 | ||
1798 | int64_t column_reader_wrap::ReadBatch(int64_t batch_size, int16_t* def_levels, int16_t* rep_levels, | |
1799 | parquet_value_t* values, int64_t* values_read) | |
1800 | { | |
1801 | parquet::Int32Reader* int32_reader; | |
1802 | parquet::Int64Reader* int64_reader; | |
1e59de90 | 1803 | parquet::FloatReader* float_reader; |
20effc67 TL |
1804 | parquet::DoubleReader* double_reader; |
1805 | parquet::ByteArrayReader* byte_array_reader; | |
1806 | ||
1807 | parquet::ByteArray str_value; | |
1808 | int64_t rows_read; | |
1809 | int32_t i32_val; | |
1810 | ||
1811 | auto error_msg = [&](std::exception &e) | |
1812 | { | |
1813 | std::stringstream err; | |
1814 | err << "what() :" << e.what() << std::endl; | |
1815 | err << "failed to parse column id:" << this->m_col_id << " name:" <<this->m_parquet_reader->metadata()->schema()->Column(m_col_id)->name(); | |
1816 | return err; | |
1817 | }; | |
1818 | int16_t defintion_level; | |
1819 | int16_t repeat_level; | |
1820 | ||
1821 | switch (get_type()) | |
1822 | { | |
1823 | case parquet::Type::type::INT32: | |
1824 | int32_reader = static_cast<parquet::Int32Reader *>(m_ColumnReader.get()); | |
1825 | try { | |
1e59de90 TL |
1826 | rows_read = int32_reader->ReadBatch(1, &defintion_level, &repeat_level, &i32_val , values_read); |
1827 | if(defintion_level == 0) | |
1828 | { | |
1829 | values->type = column_reader_wrap::parquet_type::PARQUET_NULL; | |
1830 | } else | |
1831 | { | |
1832 | values->num = i32_val; | |
1833 | values->type = column_reader_wrap::parquet_type::INT32; | |
1834 | } | |
20effc67 TL |
1835 | } |
1836 | catch(std::exception &e) | |
1837 | { | |
1838 | throw std::runtime_error(error_msg(e).str()); | |
1839 | } | |
1840 | ||
20effc67 TL |
1841 | break; |
1842 | ||
1843 | case parquet::Type::type::INT64: | |
1844 | int64_reader = static_cast<parquet::Int64Reader *>(m_ColumnReader.get()); | |
1845 | try{ | |
1e59de90 TL |
1846 | rows_read = int64_reader->ReadBatch(1, &defintion_level, &repeat_level, (int64_t *)&(values->num), values_read); |
1847 | if(defintion_level == 0) | |
1848 | { | |
1849 | values->type = column_reader_wrap::parquet_type::PARQUET_NULL; | |
1850 | } else | |
1851 | { | |
1852 | auto logical_type = m_parquet_reader->metadata()->schema()->Column(m_col_id)->logical_type(); | |
1853 | ||
1854 | if (logical_type.get()->type() == parquet::LogicalType::Type::type::TIMESTAMP) //TODO missing sub-type (milli,micro) | |
1855 | values->type = column_reader_wrap::parquet_type::TIMESTAMP; | |
1856 | else | |
1857 | values->type = column_reader_wrap::parquet_type::INT64; | |
1858 | } | |
20effc67 TL |
1859 | } |
1860 | catch(std::exception &e) | |
1861 | { | |
1862 | throw std::runtime_error(error_msg(e).str()); | |
1863 | } | |
20effc67 TL |
1864 | break; |
1865 | ||
1e59de90 TL |
1866 | case parquet::Type::type::FLOAT: |
1867 | float_reader = static_cast<parquet::FloatReader *>(m_ColumnReader.get()); | |
20effc67 | 1868 | try{ |
1e59de90 TL |
1869 | float data_source_float = 0; |
1870 | rows_read = float_reader->ReadBatch(1, &defintion_level, &repeat_level, &data_source_float , values_read);//TODO proper cast | |
1871 | if(defintion_level == 0) | |
1872 | { | |
1873 | values->type = column_reader_wrap::parquet_type::PARQUET_NULL; | |
1874 | } else | |
1875 | { | |
1876 | values->type = column_reader_wrap::parquet_type::DOUBLE; | |
1877 | values->dbl = data_source_float; | |
1878 | ||
1879 | } | |
1880 | } | |
1881 | catch(std::exception &e) | |
1882 | { | |
1883 | throw std::runtime_error(error_msg(e).str()); | |
1884 | } | |
1885 | break; | |
1886 | ||
1887 | case parquet::Type::type::DOUBLE: | |
20effc67 | 1888 | double_reader = static_cast<parquet::DoubleReader *>(m_ColumnReader.get()); |
1e59de90 TL |
1889 | try{ |
1890 | rows_read = double_reader->ReadBatch(1, &defintion_level, &repeat_level, (double *)&(values->dbl), values_read); | |
1891 | if(defintion_level == 0) | |
1892 | { | |
1893 | values->type = column_reader_wrap::parquet_type::PARQUET_NULL; | |
1894 | } else | |
1895 | { | |
1896 | values->type = column_reader_wrap::parquet_type::DOUBLE; | |
1897 | } | |
20effc67 TL |
1898 | } |
1899 | catch(std::exception &e) | |
1900 | { | |
1901 | throw std::runtime_error(error_msg(e).str()); | |
1902 | } | |
20effc67 TL |
1903 | break; |
1904 | ||
1905 | case parquet::Type::type::BYTE_ARRAY: | |
1906 | byte_array_reader = static_cast<parquet::ByteArrayReader *>(m_ColumnReader.get()); | |
1907 | try{ | |
1908 | rows_read = byte_array_reader->ReadBatch(1, &defintion_level, &repeat_level, &str_value , values_read); | |
1e59de90 TL |
1909 | if(defintion_level == 0) |
1910 | { | |
1911 | values->type = column_reader_wrap::parquet_type::PARQUET_NULL; | |
1912 | } else | |
1913 | { | |
1914 | values->type = column_reader_wrap::parquet_type::STRING; | |
1915 | values->str = (char*)str_value.ptr; | |
1916 | values->str_len = str_value.len; | |
1917 | } | |
20effc67 TL |
1918 | } |
1919 | catch(std::exception &e) | |
1920 | { | |
1921 | throw std::runtime_error(error_msg(e).str()); | |
1922 | } | |
20effc67 TL |
1923 | break; |
1924 | ||
1925 | default: | |
1926 | { | |
1927 | std::stringstream err; | |
1928 | err << "wrong type" << std::endl; | |
1929 | throw std::runtime_error(err.str()); | |
1930 | } | |
1931 | ||
1932 | } | |
1933 | ||
1934 | return rows_read; | |
1935 | } | |
1936 | ||
1937 | int64_t column_reader_wrap::Skip(int64_t rows_to_skip) | |
1938 | { | |
1939 | parquet::Int32Reader* int32_reader; | |
1940 | parquet::Int64Reader* int64_reader; | |
1941 | parquet::DoubleReader* double_reader; | |
1e59de90 | 1942 | parquet::FloatReader* float_reader; |
20effc67 TL |
1943 | parquet::ByteArrayReader* byte_array_reader; |
1944 | ||
1945 | parquet::ByteArray str_value; | |
1946 | int64_t rows_read; | |
1947 | ||
1948 | auto error_msg = [&](std::exception &e) | |
1949 | { | |
1950 | std::stringstream err; | |
1951 | err << "what() :" << e.what() << std::endl; | |
1952 | err << "failed to parse column id:" << this->m_col_id << " name:" <<this->m_parquet_reader->metadata()->schema()->Column(m_col_id)->name(); | |
1953 | return err; | |
1954 | }; | |
1955 | ||
1956 | switch (get_type()) | |
1957 | { | |
1958 | case parquet::Type::type::INT32: | |
1959 | int32_reader = static_cast<parquet::Int32Reader *>(m_ColumnReader.get()); | |
1960 | try{ | |
1961 | rows_read = int32_reader->Skip(rows_to_skip); | |
1962 | } | |
1963 | catch(std::exception &e) | |
1964 | { | |
1965 | throw std::runtime_error(error_msg(e).str()); | |
1966 | } | |
1967 | break; | |
1968 | ||
1969 | case parquet::Type::type::INT64: | |
1970 | int64_reader = static_cast<parquet::Int64Reader *>(m_ColumnReader.get()); | |
1971 | try{ | |
1972 | rows_read = int64_reader->Skip(rows_to_skip); | |
1973 | } | |
1974 | catch(std::exception &e) | |
1975 | { | |
1976 | throw std::runtime_error(error_msg(e).str()); | |
1977 | } | |
1978 | break; | |
1979 | ||
1e59de90 TL |
1980 | case parquet::Type::type::FLOAT: |
1981 | float_reader = static_cast<parquet::FloatReader *>(m_ColumnReader.get()); | |
1982 | try { | |
1983 | rows_read = float_reader->Skip(rows_to_skip); | |
1984 | } | |
1985 | catch(std::exception &e) | |
1986 | { | |
1987 | throw std::runtime_error(error_msg(e).str()); | |
1988 | } | |
1989 | break; | |
1990 | ||
20effc67 TL |
1991 | case parquet::Type::type::DOUBLE: |
1992 | double_reader = static_cast<parquet::DoubleReader *>(m_ColumnReader.get()); | |
1993 | try { | |
1994 | rows_read = double_reader->Skip(rows_to_skip); | |
1995 | } | |
1996 | catch(std::exception &e) | |
1997 | { | |
1998 | throw std::runtime_error(error_msg(e).str()); | |
1999 | } | |
2000 | break; | |
2001 | ||
2002 | case parquet::Type::type::BYTE_ARRAY: | |
2003 | byte_array_reader = static_cast<parquet::ByteArrayReader *>(m_ColumnReader.get()); | |
2004 | try{ | |
2005 | rows_read = byte_array_reader->Skip(rows_to_skip); | |
2006 | } | |
2007 | catch(std::exception &e) | |
2008 | { | |
2009 | throw std::runtime_error(error_msg(e).str()); | |
2010 | } | |
2011 | break; | |
2012 | ||
2013 | default: | |
2014 | { | |
2015 | std::stringstream err; | |
2016 | err << "wrong type" << std::endl; | |
2017 | throw std::runtime_error(err.str()); | |
2018 | } | |
2019 | } | |
2020 | ||
2021 | return rows_read; | |
2022 | } | |
2023 | ||
1e59de90 TL |
2024 | |
2025 | column_reader_wrap::parquet_column_read_state column_reader_wrap::Read(const uint64_t rownum,parquet_value_t & value) | |
20effc67 TL |
2026 | { |
2027 | int64_t values_read = 0; | |
2028 | ||
2029 | if (m_rownum < (int64_t)rownum) | |
2030 | { //should skip | |
2031 | m_read_last_value = false; | |
2032 | ||
1e59de90 | 2033 | //TODO what about Skip(0) |
20effc67 TL |
2034 | uint64_t skipped_rows = Skip(rownum - m_rownum -1); |
2035 | m_rownum += skipped_rows; | |
2036 | ||
2037 | while (((m_rownum+1) < (int64_t)rownum) || HasNext() == false) | |
2038 | { | |
2039 | uint64_t skipped_rows = Skip(rownum - m_rownum -1); | |
2040 | m_rownum += skipped_rows; | |
2041 | ||
2042 | if (HasNext() == false) | |
2043 | { | |
2044 | if ((m_row_grouop_id + 1) >= m_parquet_reader->metadata()->num_row_groups()) | |
2045 | { | |
2046 | m_end_of_stream = true; | |
1e59de90 | 2047 | return column_reader_wrap::parquet_column_read_state::PARQUET_OUT_OF_RANGE;//end-of-stream |
20effc67 TL |
2048 | } |
2049 | else | |
2050 | { | |
2051 | m_row_grouop_id++; | |
2052 | m_row_group_reader = m_parquet_reader->RowGroup(m_row_grouop_id); | |
2053 | m_ColumnReader = m_row_group_reader->Column(m_col_id); | |
2054 | } | |
2055 | } | |
2056 | } //end-while | |
2057 | ||
2058 | ReadBatch(1, nullptr, nullptr, &m_last_value, &values_read); | |
2059 | m_read_last_value = true; | |
2060 | m_rownum++; | |
2061 | value = m_last_value; | |
2062 | } | |
2063 | else | |
2064 | { | |
2065 | if (m_read_last_value == false) | |
2066 | { | |
2067 | ReadBatch(1, nullptr, nullptr, &m_last_value, &values_read); | |
2068 | m_read_last_value = true; | |
2069 | m_rownum++; | |
2070 | } | |
2071 | ||
2072 | value = m_last_value; | |
2073 | } | |
2074 | ||
1e59de90 | 2075 | return column_reader_wrap::parquet_column_read_state::PARQUET_READ_OK; |
20effc67 TL |
2076 | } |
2077 | ||
2078 | #endif | |
2079 |