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1 | // Copyright (c) 2011-present, Facebook, Inc. All rights reserved. | |
2 | // This source code is licensed under both the GPLv2 (found in the | |
3 | // COPYING file in the root directory) and Apache 2.0 License | |
4 | // (found in the LICENSE.Apache file in the root directory). | |
5 | // | |
6 | // This file implements the callback "bridge" between Java and C++ for | |
7 | // rocksdb::Comparator. | |
8 | ||
9 | #include "rocksjni/writebatchhandlerjnicallback.h" | |
10 | #include "rocksjni/portal.h" | |
11 | ||
12 | namespace rocksdb { | |
13 | WriteBatchHandlerJniCallback::WriteBatchHandlerJniCallback( | |
14 | JNIEnv* env, jobject jWriteBatchHandler) | |
15 | : JniCallback(env, jWriteBatchHandler), m_env(env) { | |
16 | ||
17 | m_jPutCfMethodId = WriteBatchHandlerJni::getPutCfMethodId(env); | |
18 | if(m_jPutCfMethodId == nullptr) { | |
19 | // exception thrown | |
20 | return; | |
21 | } | |
22 | ||
23 | m_jPutMethodId = WriteBatchHandlerJni::getPutMethodId(env); | |
24 | if(m_jPutMethodId == nullptr) { | |
25 | // exception thrown | |
26 | return; | |
27 | } | |
28 | ||
29 | m_jMergeCfMethodId = WriteBatchHandlerJni::getMergeCfMethodId(env); | |
30 | if(m_jMergeCfMethodId == nullptr) { | |
31 | // exception thrown | |
32 | return; | |
33 | } | |
34 | ||
35 | m_jMergeMethodId = WriteBatchHandlerJni::getMergeMethodId(env); | |
36 | if(m_jMergeMethodId == nullptr) { | |
37 | // exception thrown | |
38 | return; | |
39 | } | |
40 | ||
41 | m_jDeleteCfMethodId = WriteBatchHandlerJni::getDeleteCfMethodId(env); | |
42 | if(m_jDeleteCfMethodId == nullptr) { | |
43 | // exception thrown | |
44 | return; | |
45 | } | |
46 | ||
47 | m_jDeleteMethodId = WriteBatchHandlerJni::getDeleteMethodId(env); | |
48 | if(m_jDeleteMethodId == nullptr) { | |
49 | // exception thrown | |
50 | return; | |
51 | } | |
52 | ||
53 | m_jSingleDeleteCfMethodId = | |
54 | WriteBatchHandlerJni::getSingleDeleteCfMethodId(env); | |
55 | if(m_jSingleDeleteCfMethodId == nullptr) { | |
56 | // exception thrown | |
57 | return; | |
58 | } | |
59 | ||
60 | m_jSingleDeleteMethodId = WriteBatchHandlerJni::getSingleDeleteMethodId(env); | |
61 | if(m_jSingleDeleteMethodId == nullptr) { | |
62 | // exception thrown | |
63 | return; | |
64 | } | |
65 | ||
66 | m_jDeleteRangeCfMethodId = | |
67 | WriteBatchHandlerJni::getDeleteRangeCfMethodId(env); | |
68 | if (m_jDeleteRangeCfMethodId == nullptr) { | |
69 | // exception thrown | |
70 | return; | |
71 | } | |
72 | ||
73 | m_jDeleteRangeMethodId = WriteBatchHandlerJni::getDeleteRangeMethodId(env); | |
74 | if (m_jDeleteRangeMethodId == nullptr) { | |
75 | // exception thrown | |
76 | return; | |
77 | } | |
78 | ||
79 | m_jLogDataMethodId = WriteBatchHandlerJni::getLogDataMethodId(env); | |
80 | if(m_jLogDataMethodId == nullptr) { | |
81 | // exception thrown | |
82 | return; | |
83 | } | |
84 | ||
85 | m_jPutBlobIndexCfMethodId = | |
86 | WriteBatchHandlerJni::getPutBlobIndexCfMethodId(env); | |
87 | if(m_jPutBlobIndexCfMethodId == nullptr) { | |
88 | // exception thrown | |
89 | return; | |
90 | } | |
91 | ||
92 | m_jMarkBeginPrepareMethodId = | |
93 | WriteBatchHandlerJni::getMarkBeginPrepareMethodId(env); | |
94 | if(m_jMarkBeginPrepareMethodId == nullptr) { | |
95 | // exception thrown | |
96 | return; | |
97 | } | |
98 | ||
99 | m_jMarkEndPrepareMethodId = | |
100 | WriteBatchHandlerJni::getMarkEndPrepareMethodId(env); | |
101 | if(m_jMarkEndPrepareMethodId == nullptr) { | |
102 | // exception thrown | |
103 | return; | |
104 | } | |
105 | ||
106 | m_jMarkNoopMethodId = WriteBatchHandlerJni::getMarkNoopMethodId(env); | |
107 | if(m_jMarkNoopMethodId == nullptr) { | |
108 | // exception thrown | |
109 | return; | |
110 | } | |
111 | ||
112 | m_jMarkRollbackMethodId = WriteBatchHandlerJni::getMarkRollbackMethodId(env); | |
113 | if(m_jMarkRollbackMethodId == nullptr) { | |
114 | // exception thrown | |
115 | return; | |
116 | } | |
117 | ||
118 | m_jMarkCommitMethodId = WriteBatchHandlerJni::getMarkCommitMethodId(env); | |
119 | if(m_jMarkCommitMethodId == nullptr) { | |
120 | // exception thrown | |
121 | return; | |
122 | } | |
123 | ||
124 | m_jContinueMethodId = WriteBatchHandlerJni::getContinueMethodId(env); | |
125 | if(m_jContinueMethodId == nullptr) { | |
126 | // exception thrown | |
127 | return; | |
128 | } | |
129 | } | |
130 | ||
131 | rocksdb::Status WriteBatchHandlerJniCallback::PutCF(uint32_t column_family_id, | |
132 | const Slice& key, const Slice& value) { | |
133 | auto put = [this, column_family_id] ( | |
134 | jbyteArray j_key, jbyteArray j_value) { | |
135 | m_env->CallVoidMethod( | |
136 | m_jcallback_obj, | |
137 | m_jPutCfMethodId, | |
138 | static_cast<jint>(column_family_id), | |
139 | j_key, | |
140 | j_value); | |
141 | }; | |
142 | auto status = WriteBatchHandlerJniCallback::kv_op(key, value, put); | |
143 | if(status == nullptr) { | |
144 | return rocksdb::Status::OK(); // TODO(AR) what to do if there is an Exception but we don't know the rocksdb::Status? | |
145 | } else { | |
146 | return rocksdb::Status(*status); | |
147 | } | |
148 | } | |
149 | ||
150 | void WriteBatchHandlerJniCallback::Put(const Slice& key, const Slice& value) { | |
151 | auto put = [this] ( | |
152 | jbyteArray j_key, jbyteArray j_value) { | |
153 | m_env->CallVoidMethod( | |
154 | m_jcallback_obj, | |
155 | m_jPutMethodId, | |
156 | j_key, | |
157 | j_value); | |
158 | }; | |
159 | WriteBatchHandlerJniCallback::kv_op(key, value, put); | |
160 | } | |
161 | ||
162 | rocksdb::Status WriteBatchHandlerJniCallback::MergeCF(uint32_t column_family_id, | |
163 | const Slice& key, const Slice& value) { | |
164 | auto merge = [this, column_family_id] ( | |
165 | jbyteArray j_key, jbyteArray j_value) { | |
166 | m_env->CallVoidMethod( | |
167 | m_jcallback_obj, | |
168 | m_jMergeCfMethodId, | |
169 | static_cast<jint>(column_family_id), | |
170 | j_key, | |
171 | j_value); | |
172 | }; | |
173 | auto status = WriteBatchHandlerJniCallback::kv_op(key, value, merge); | |
174 | if(status == nullptr) { | |
175 | return rocksdb::Status::OK(); // TODO(AR) what to do if there is an Exception but we don't know the rocksdb::Status? | |
176 | } else { | |
177 | return rocksdb::Status(*status); | |
178 | } | |
179 | } | |
180 | ||
181 | void WriteBatchHandlerJniCallback::Merge(const Slice& key, const Slice& value) { | |
182 | auto merge = [this] ( | |
183 | jbyteArray j_key, jbyteArray j_value) { | |
184 | m_env->CallVoidMethod( | |
185 | m_jcallback_obj, | |
186 | m_jMergeMethodId, | |
187 | j_key, | |
188 | j_value); | |
189 | }; | |
190 | WriteBatchHandlerJniCallback::kv_op(key, value, merge); | |
191 | } | |
192 | ||
193 | rocksdb::Status WriteBatchHandlerJniCallback::DeleteCF(uint32_t column_family_id, | |
194 | const Slice& key) { | |
195 | auto remove = [this, column_family_id] (jbyteArray j_key) { | |
196 | m_env->CallVoidMethod( | |
197 | m_jcallback_obj, | |
198 | m_jDeleteCfMethodId, | |
199 | static_cast<jint>(column_family_id), | |
200 | j_key); | |
201 | }; | |
202 | auto status = WriteBatchHandlerJniCallback::k_op(key, remove); | |
203 | if(status == nullptr) { | |
204 | return rocksdb::Status::OK(); // TODO(AR) what to do if there is an Exception but we don't know the rocksdb::Status? | |
205 | } else { | |
206 | return rocksdb::Status(*status); | |
207 | } | |
208 | } | |
209 | ||
210 | void WriteBatchHandlerJniCallback::Delete(const Slice& key) { | |
211 | auto remove = [this] (jbyteArray j_key) { | |
212 | m_env->CallVoidMethod( | |
213 | m_jcallback_obj, | |
214 | m_jDeleteMethodId, | |
215 | j_key); | |
216 | }; | |
217 | WriteBatchHandlerJniCallback::k_op(key, remove); | |
218 | } | |
219 | ||
220 | rocksdb::Status WriteBatchHandlerJniCallback::SingleDeleteCF(uint32_t column_family_id, | |
221 | const Slice& key) { | |
222 | auto singleDelete = [this, column_family_id] (jbyteArray j_key) { | |
223 | m_env->CallVoidMethod( | |
224 | m_jcallback_obj, | |
225 | m_jSingleDeleteCfMethodId, | |
226 | static_cast<jint>(column_family_id), | |
227 | j_key); | |
228 | }; | |
229 | auto status = WriteBatchHandlerJniCallback::k_op(key, singleDelete); | |
230 | if(status == nullptr) { | |
231 | return rocksdb::Status::OK(); // TODO(AR) what to do if there is an Exception but we don't know the rocksdb::Status? | |
232 | } else { | |
233 | return rocksdb::Status(*status); | |
234 | } | |
235 | } | |
236 | ||
237 | void WriteBatchHandlerJniCallback::SingleDelete(const Slice& key) { | |
238 | auto singleDelete = [this] (jbyteArray j_key) { | |
239 | m_env->CallVoidMethod( | |
240 | m_jcallback_obj, | |
241 | m_jSingleDeleteMethodId, | |
242 | j_key); | |
243 | }; | |
244 | WriteBatchHandlerJniCallback::k_op(key, singleDelete); | |
245 | } | |
246 | ||
247 | rocksdb::Status WriteBatchHandlerJniCallback::DeleteRangeCF(uint32_t column_family_id, | |
248 | const Slice& beginKey, const Slice& endKey) { | |
249 | auto deleteRange = [this, column_family_id] ( | |
250 | jbyteArray j_beginKey, jbyteArray j_endKey) { | |
251 | m_env->CallVoidMethod( | |
252 | m_jcallback_obj, | |
253 | m_jDeleteRangeCfMethodId, | |
254 | static_cast<jint>(column_family_id), | |
255 | j_beginKey, | |
256 | j_endKey); | |
257 | }; | |
258 | auto status = WriteBatchHandlerJniCallback::kv_op(beginKey, endKey, deleteRange); | |
259 | if(status == nullptr) { | |
260 | return rocksdb::Status::OK(); // TODO(AR) what to do if there is an Exception but we don't know the rocksdb::Status? | |
261 | } else { | |
262 | return rocksdb::Status(*status); | |
263 | } | |
264 | } | |
265 | ||
266 | void WriteBatchHandlerJniCallback::DeleteRange(const Slice& beginKey, | |
267 | const Slice& endKey) { | |
268 | auto deleteRange = [this] ( | |
269 | jbyteArray j_beginKey, jbyteArray j_endKey) { | |
270 | m_env->CallVoidMethod( | |
271 | m_jcallback_obj, | |
272 | m_jDeleteRangeMethodId, | |
273 | j_beginKey, | |
274 | j_endKey); | |
275 | }; | |
276 | WriteBatchHandlerJniCallback::kv_op(beginKey, endKey, deleteRange); | |
277 | } | |
278 | ||
279 | void WriteBatchHandlerJniCallback::LogData(const Slice& blob) { | |
280 | auto logData = [this] (jbyteArray j_blob) { | |
281 | m_env->CallVoidMethod( | |
282 | m_jcallback_obj, | |
283 | m_jLogDataMethodId, | |
284 | j_blob); | |
285 | }; | |
286 | WriteBatchHandlerJniCallback::k_op(blob, logData); | |
287 | } | |
288 | ||
289 | rocksdb::Status WriteBatchHandlerJniCallback::PutBlobIndexCF(uint32_t column_family_id, | |
290 | const Slice& key, const Slice& value) { | |
291 | auto putBlobIndex = [this, column_family_id] ( | |
292 | jbyteArray j_key, jbyteArray j_value) { | |
293 | m_env->CallVoidMethod( | |
294 | m_jcallback_obj, | |
295 | m_jPutBlobIndexCfMethodId, | |
296 | static_cast<jint>(column_family_id), | |
297 | j_key, | |
298 | j_value); | |
299 | }; | |
300 | auto status = WriteBatchHandlerJniCallback::kv_op(key, value, putBlobIndex); | |
301 | if(status == nullptr) { | |
302 | return rocksdb::Status::OK(); // TODO(AR) what to do if there is an Exception but we don't know the rocksdb::Status? | |
303 | } else { | |
304 | return rocksdb::Status(*status); | |
305 | } | |
306 | } | |
307 | ||
308 | rocksdb::Status WriteBatchHandlerJniCallback::MarkBeginPrepare(bool unprepare) { | |
309 | #ifndef DEBUG | |
310 | (void) unprepare; | |
311 | #else | |
312 | assert(!unprepare); | |
313 | #endif | |
314 | m_env->CallVoidMethod(m_jcallback_obj, m_jMarkBeginPrepareMethodId); | |
315 | ||
316 | // check for Exception, in-particular RocksDBException | |
317 | if (m_env->ExceptionCheck()) { | |
318 | // exception thrown | |
319 | jthrowable exception = m_env->ExceptionOccurred(); | |
320 | std::unique_ptr<rocksdb::Status> status = rocksdb::RocksDBExceptionJni::toCppStatus(m_env, exception); | |
321 | if (status == nullptr) { | |
322 | // unkown status or exception occurred extracting status | |
323 | m_env->ExceptionDescribe(); | |
324 | return rocksdb::Status::OK(); // TODO(AR) probably need a better error code here | |
325 | ||
326 | } else { | |
327 | m_env->ExceptionClear(); // clear the exception, as we have extracted the status | |
328 | return rocksdb::Status(*status); | |
329 | } | |
330 | } | |
331 | ||
332 | return rocksdb::Status::OK(); | |
333 | } | |
334 | ||
335 | rocksdb::Status WriteBatchHandlerJniCallback::MarkEndPrepare(const Slice& xid) { | |
336 | auto markEndPrepare = [this] ( | |
337 | jbyteArray j_xid) { | |
338 | m_env->CallVoidMethod( | |
339 | m_jcallback_obj, | |
340 | m_jMarkEndPrepareMethodId, | |
341 | j_xid); | |
342 | }; | |
343 | auto status = WriteBatchHandlerJniCallback::k_op(xid, markEndPrepare); | |
344 | if(status == nullptr) { | |
345 | return rocksdb::Status::OK(); // TODO(AR) what to do if there is an Exception but we don't know the rocksdb::Status? | |
346 | } else { | |
347 | return rocksdb::Status(*status); | |
348 | } | |
349 | } | |
350 | ||
351 | rocksdb::Status WriteBatchHandlerJniCallback::MarkNoop(bool empty_batch) { | |
352 | m_env->CallVoidMethod(m_jcallback_obj, m_jMarkNoopMethodId, static_cast<jboolean>(empty_batch)); | |
353 | ||
354 | // check for Exception, in-particular RocksDBException | |
355 | if (m_env->ExceptionCheck()) { | |
356 | // exception thrown | |
357 | jthrowable exception = m_env->ExceptionOccurred(); | |
358 | std::unique_ptr<rocksdb::Status> status = rocksdb::RocksDBExceptionJni::toCppStatus(m_env, exception); | |
359 | if (status == nullptr) { | |
360 | // unkown status or exception occurred extracting status | |
361 | m_env->ExceptionDescribe(); | |
362 | return rocksdb::Status::OK(); // TODO(AR) probably need a better error code here | |
363 | ||
364 | } else { | |
365 | m_env->ExceptionClear(); // clear the exception, as we have extracted the status | |
366 | return rocksdb::Status(*status); | |
367 | } | |
368 | } | |
369 | ||
370 | return rocksdb::Status::OK(); | |
371 | } | |
372 | ||
373 | rocksdb::Status WriteBatchHandlerJniCallback::MarkRollback(const Slice& xid) { | |
374 | auto markRollback = [this] ( | |
375 | jbyteArray j_xid) { | |
376 | m_env->CallVoidMethod( | |
377 | m_jcallback_obj, | |
378 | m_jMarkRollbackMethodId, | |
379 | j_xid); | |
380 | }; | |
381 | auto status = WriteBatchHandlerJniCallback::k_op(xid, markRollback); | |
382 | if(status == nullptr) { | |
383 | return rocksdb::Status::OK(); // TODO(AR) what to do if there is an Exception but we don't know the rocksdb::Status? | |
384 | } else { | |
385 | return rocksdb::Status(*status); | |
386 | } | |
387 | } | |
388 | ||
389 | rocksdb::Status WriteBatchHandlerJniCallback::MarkCommit(const Slice& xid) { | |
390 | auto markCommit = [this] ( | |
391 | jbyteArray j_xid) { | |
392 | m_env->CallVoidMethod( | |
393 | m_jcallback_obj, | |
394 | m_jMarkCommitMethodId, | |
395 | j_xid); | |
396 | }; | |
397 | auto status = WriteBatchHandlerJniCallback::k_op(xid, markCommit); | |
398 | if(status == nullptr) { | |
399 | return rocksdb::Status::OK(); // TODO(AR) what to do if there is an Exception but we don't know the rocksdb::Status? | |
400 | } else { | |
401 | return rocksdb::Status(*status); | |
402 | } | |
403 | } | |
404 | ||
405 | bool WriteBatchHandlerJniCallback::Continue() { | |
406 | jboolean jContinue = m_env->CallBooleanMethod( | |
407 | m_jcallback_obj, | |
408 | m_jContinueMethodId); | |
409 | if(m_env->ExceptionCheck()) { | |
410 | // exception thrown | |
411 | m_env->ExceptionDescribe(); | |
412 | } | |
413 | ||
414 | return static_cast<bool>(jContinue == JNI_TRUE); | |
415 | } | |
416 | ||
417 | std::unique_ptr<rocksdb::Status> WriteBatchHandlerJniCallback::kv_op(const Slice& key, const Slice& value, std::function<void(jbyteArray, jbyteArray)> kvFn) { | |
418 | const jbyteArray j_key = JniUtil::copyBytes(m_env, key); | |
419 | if (j_key == nullptr) { | |
420 | // exception thrown | |
421 | if (m_env->ExceptionCheck()) { | |
422 | m_env->ExceptionDescribe(); | |
423 | } | |
424 | return nullptr; | |
425 | } | |
426 | ||
427 | const jbyteArray j_value = JniUtil::copyBytes(m_env, value); | |
428 | if (j_value == nullptr) { | |
429 | // exception thrown | |
430 | if (m_env->ExceptionCheck()) { | |
431 | m_env->ExceptionDescribe(); | |
432 | } | |
433 | if (j_key != nullptr) { | |
434 | m_env->DeleteLocalRef(j_key); | |
435 | } | |
436 | return nullptr; | |
437 | } | |
438 | ||
439 | kvFn(j_key, j_value); | |
440 | ||
441 | // check for Exception, in-particular RocksDBException | |
442 | if (m_env->ExceptionCheck()) { | |
443 | if (j_value != nullptr) { | |
444 | m_env->DeleteLocalRef(j_value); | |
445 | } | |
446 | if (j_key != nullptr) { | |
447 | m_env->DeleteLocalRef(j_key); | |
448 | } | |
449 | ||
450 | // exception thrown | |
451 | jthrowable exception = m_env->ExceptionOccurred(); | |
452 | std::unique_ptr<rocksdb::Status> status = rocksdb::RocksDBExceptionJni::toCppStatus(m_env, exception); | |
453 | if (status == nullptr) { | |
454 | // unkown status or exception occurred extracting status | |
455 | m_env->ExceptionDescribe(); | |
456 | return nullptr; | |
457 | ||
458 | } else { | |
459 | m_env->ExceptionClear(); // clear the exception, as we have extracted the status | |
460 | return status; | |
461 | } | |
462 | } | |
463 | ||
464 | if (j_value != nullptr) { | |
465 | m_env->DeleteLocalRef(j_value); | |
466 | } | |
467 | if (j_key != nullptr) { | |
468 | m_env->DeleteLocalRef(j_key); | |
469 | } | |
470 | ||
471 | // all OK | |
472 | return std::unique_ptr<rocksdb::Status>(new rocksdb::Status(rocksdb::Status::OK())); | |
473 | } | |
474 | ||
475 | std::unique_ptr<rocksdb::Status> WriteBatchHandlerJniCallback::k_op(const Slice& key, std::function<void(jbyteArray)> kFn) { | |
476 | const jbyteArray j_key = JniUtil::copyBytes(m_env, key); | |
477 | if (j_key == nullptr) { | |
478 | // exception thrown | |
479 | if (m_env->ExceptionCheck()) { | |
480 | m_env->ExceptionDescribe(); | |
481 | } | |
482 | return nullptr; | |
483 | } | |
484 | ||
485 | kFn(j_key); | |
486 | ||
487 | // check for Exception, in-particular RocksDBException | |
488 | if (m_env->ExceptionCheck()) { | |
489 | if (j_key != nullptr) { | |
490 | m_env->DeleteLocalRef(j_key); | |
491 | } | |
492 | ||
493 | // exception thrown | |
494 | jthrowable exception = m_env->ExceptionOccurred(); | |
495 | std::unique_ptr<rocksdb::Status> status = rocksdb::RocksDBExceptionJni::toCppStatus(m_env, exception); | |
496 | if (status == nullptr) { | |
497 | // unkown status or exception occurred extracting status | |
498 | m_env->ExceptionDescribe(); | |
499 | return nullptr; | |
500 | ||
501 | } else { | |
502 | m_env->ExceptionClear(); // clear the exception, as we have extracted the status | |
503 | return status; | |
504 | } | |
505 | } | |
506 | ||
507 | if (j_key != nullptr) { | |
508 | m_env->DeleteLocalRef(j_key); | |
509 | } | |
510 | ||
511 | // all OK | |
512 | return std::unique_ptr<rocksdb::Status>(new rocksdb::Status(rocksdb::Status::OK())); | |
513 | } | |
514 | } // namespace rocksdb |