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rocksdb/java/rocksjni/rocksjni.cc
Adam Retter c6d464a9da Fixed various memory leaks and Java 8 JNI Compatibility 
Summary:
I have manually audited the entire RocksJava code base.

Sorry for the large pull-request, I have broken it down into many small atomic commits though.

My initial intention was to fix the warnings that appear when running RocksJava on Java 8 with `-Xcheck:jni`, for example when running `make jtest` you would see many errors similar to:

```
WARNING in native method: JNI call made without checking exceptions when required to from CallObjectMethod
WARNING in native method: JNI call made without checking exceptions when required to from CallVoidMethod
WARNING in native method: JNI call made without checking exceptions when required to from CallStaticVoidMethod
...
```

A few of those warnings still remain, however they seem to come directly from the JVM and are not directly related to RocksJava; I am in contact with the OpenJDK hostpot-dev mailing list about these - http://mail.openjdk.java.net/pipermail/hotspot-dev/2017-February/025981.html.

As a result of fixing these, I realised we were not r
Closes https://github.com/facebook/rocksdb/pull/1890

Differential Revision: D4591758

Pulled By: siying

fbshipit-source-id: 7f7fdf4
2017-02-27 16:39:12 -08:00

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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
// This file implements the "bridge" between Java and C++ and enables
// calling c++ rocksdb::DB methods from Java side.
#include <jni.h>
#include <stdio.h>
#include <stdlib.h>
#include <algorithm>
#include <functional>
#include <memory>
#include <string>
#include <tuple>
#include <vector>
#include "include/org_rocksdb_RocksDB.h"
#include "rocksdb/cache.h"
#include "rocksdb/db.h"
#include "rocksdb/options.h"
#include "rocksdb/types.h"
#include "rocksjni/portal.h"
#ifdef min
#undef min
#endif
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::Open
jlong rocksdb_open_helper(JNIEnv* env, jlong jopt_handle, jstring jdb_path,
std::function<rocksdb::Status(
const rocksdb::Options&, const std::string&, rocksdb::DB**)> open_fn
) {
const char* db_path = env->GetStringUTFChars(jdb_path, nullptr);
if(db_path == nullptr) {
// exception thrown: OutOfMemoryError
return 0;
}
auto* opt = reinterpret_cast<rocksdb::Options*>(jopt_handle);
rocksdb::DB* db = nullptr;
rocksdb::Status s = open_fn(*opt, db_path, &db);
env->ReleaseStringUTFChars(jdb_path, db_path);
if (s.ok()) {
return reinterpret_cast<jlong>(db);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
return 0;
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: open
* Signature: (JLjava/lang/String;)J
*/
jlong Java_org_rocksdb_RocksDB_open__JLjava_lang_String_2(
JNIEnv* env, jclass jcls, jlong jopt_handle, jstring jdb_path) {
return rocksdb_open_helper(env, jopt_handle, jdb_path,
(rocksdb::Status(*)
(const rocksdb::Options&, const std::string&, rocksdb::DB**)
)&rocksdb::DB::Open
);
}
/*
* Class: org_rocksdb_RocksDB
* Method: openROnly
* Signature: (JLjava/lang/String;)J
*/
jlong Java_org_rocksdb_RocksDB_openROnly__JLjava_lang_String_2(
JNIEnv* env, jclass jcls, jlong jopt_handle, jstring jdb_path) {
return rocksdb_open_helper(env, jopt_handle, jdb_path, [](
const rocksdb::Options& options,
const std::string& db_path, rocksdb::DB** db) {
return rocksdb::DB::OpenForReadOnly(options, db_path, db);
});
}
jlongArray rocksdb_open_helper(JNIEnv* env, jlong jopt_handle,
jstring jdb_path, jobjectArray jcolumn_names, jlongArray jcolumn_options,
std::function<rocksdb::Status(
const rocksdb::DBOptions&, const std::string&,
const std::vector<rocksdb::ColumnFamilyDescriptor>&,
std::vector<rocksdb::ColumnFamilyHandle*>*,
rocksdb::DB**)> open_fn
) {
const char* db_path = env->GetStringUTFChars(jdb_path, nullptr);
if(db_path == nullptr) {
// exception thrown: OutOfMemoryError
return nullptr;
}
const jsize len_cols = env->GetArrayLength(jcolumn_names);
jlong* jco = env->GetLongArrayElements(jcolumn_options, nullptr);
if(jco == nullptr) {
// exception thrown: OutOfMemoryError
env->ReleaseStringUTFChars(jdb_path, db_path);
return nullptr;
}
std::vector<rocksdb::ColumnFamilyDescriptor> column_families;
jboolean has_exception = JNI_FALSE;
rocksdb::JniUtil::byteStrings<std::string>(
env,
jcolumn_names,
[](const char* str_data, const size_t str_len) {
return std::string(str_data, str_len);
},
[&jco, &column_families](size_t idx, std::string cf_name) {
rocksdb::ColumnFamilyOptions* cf_options =
reinterpret_cast<rocksdb::ColumnFamilyOptions*>(jco[idx]);
column_families.push_back(
rocksdb::ColumnFamilyDescriptor(cf_name, *cf_options));
},
&has_exception);
env->ReleaseLongArrayElements(jcolumn_options, jco, JNI_ABORT);
if(has_exception == JNI_TRUE) {
// exception occured
env->ReleaseStringUTFChars(jdb_path, db_path);
return nullptr;
}
auto* opt = reinterpret_cast<rocksdb::DBOptions*>(jopt_handle);
std::vector<rocksdb::ColumnFamilyHandle*> handles;
rocksdb::DB* db = nullptr;
rocksdb::Status s = open_fn(*opt, db_path, column_families,
&handles, &db);
// we have now finished with db_path
env->ReleaseStringUTFChars(jdb_path, db_path);
// check if open operation was successful
if (s.ok()) {
const jsize resultsLen = 1 + len_cols; //db handle + column family handles
std::unique_ptr<jlong[]> results =
std::unique_ptr<jlong[]>(new jlong[resultsLen]);
results[0] = reinterpret_cast<jlong>(db);
for(int i = 1; i <= len_cols; i++) {
results[i] = reinterpret_cast<jlong>(handles[i - 1]);
}
jlongArray jresults = env->NewLongArray(resultsLen);
if(jresults == nullptr) {
// exception thrown: OutOfMemoryError
return nullptr;
}
env->SetLongArrayRegion(jresults, 0, resultsLen, results.get());
if(env->ExceptionCheck()) {
// exception thrown: ArrayIndexOutOfBoundsException
env->DeleteLocalRef(jresults);
return nullptr;
}
return jresults;
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
return nullptr;
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: openROnly
* Signature: (JLjava/lang/String;[[B[J)[J
*/
jlongArray Java_org_rocksdb_RocksDB_openROnly__JLjava_lang_String_2_3_3B_3J(
JNIEnv* env, jclass jcls, jlong jopt_handle, jstring jdb_path,
jobjectArray jcolumn_names, jlongArray jcolumn_options) {
return rocksdb_open_helper(env, jopt_handle, jdb_path, jcolumn_names,
jcolumn_options, [](
const rocksdb::DBOptions& options, const std::string& db_path,
const std::vector<rocksdb::ColumnFamilyDescriptor>& column_families,
std::vector<rocksdb::ColumnFamilyHandle*>* handles, rocksdb::DB** db) {
return rocksdb::DB::OpenForReadOnly(options, db_path, column_families,
handles, db);
});
}
/*
* Class: org_rocksdb_RocksDB
* Method: open
* Signature: (JLjava/lang/String;[[B[J)[J
*/
jlongArray Java_org_rocksdb_RocksDB_open__JLjava_lang_String_2_3_3B_3J(
JNIEnv* env, jclass jcls, jlong jopt_handle, jstring jdb_path,
jobjectArray jcolumn_names, jlongArray jcolumn_options) {
return rocksdb_open_helper(env, jopt_handle, jdb_path, jcolumn_names,
jcolumn_options, (rocksdb::Status(*)
(const rocksdb::DBOptions&, const std::string&,
const std::vector<rocksdb::ColumnFamilyDescriptor>&,
std::vector<rocksdb::ColumnFamilyHandle*>*, rocksdb::DB**)
)&rocksdb::DB::Open
);
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::ListColumnFamilies
/*
* Class: org_rocksdb_RocksDB
* Method: listColumnFamilies
* Signature: (JLjava/lang/String;)[[B
*/
jobjectArray Java_org_rocksdb_RocksDB_listColumnFamilies(
JNIEnv* env, jclass jclazz, jlong jopt_handle, jstring jdb_path) {
std::vector<std::string> column_family_names;
const char* db_path = env->GetStringUTFChars(jdb_path, nullptr);
if(db_path == nullptr) {
// exception thrown: OutOfMemoryError
return nullptr;
}
auto* opt = reinterpret_cast<rocksdb::Options*>(jopt_handle);
rocksdb::Status s = rocksdb::DB::ListColumnFamilies(*opt, db_path,
&column_family_names);
env->ReleaseStringUTFChars(jdb_path, db_path);
jobjectArray jcolumn_family_names =
rocksdb::JniUtil::stringsBytes(env, column_family_names);
return jcolumn_family_names;
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::Put
/**
* @return true if the put succeeded, false if a Java Exception was thrown
*/
bool rocksdb_put_helper(JNIEnv* env, rocksdb::DB* db,
const rocksdb::WriteOptions& write_options,
rocksdb::ColumnFamilyHandle* cf_handle, jbyteArray jkey,
jint jkey_off, jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len) {
jbyte* key = new jbyte[jkey_len];
env->GetByteArrayRegion(jkey, jkey_off, jkey_len, key);
if(env->ExceptionCheck()) {
// exception thrown: ArrayIndexOutOfBoundsException
delete [] key;
return false;
}
jbyte* value = new jbyte[jval_len];
env->GetByteArrayRegion(jval, jval_off, jval_len, value);
if(env->ExceptionCheck()) {
// exception thrown: ArrayIndexOutOfBoundsException
delete [] value;
delete [] key;
return false;
}
rocksdb::Slice key_slice(reinterpret_cast<char*>(key), jkey_len);
rocksdb::Slice value_slice(reinterpret_cast<char*>(value), jval_len);
rocksdb::Status s;
if (cf_handle != nullptr) {
s = db->Put(write_options, cf_handle, key_slice, value_slice);
} else {
// backwards compatibility
s = db->Put(write_options, key_slice, value_slice);
}
// cleanup
delete [] value;
delete [] key;
if (s.ok()) {
return true;
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
return false;
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: put
* Signature: (J[BII[BII)V
*/
void Java_org_rocksdb_RocksDB_put__J_3BII_3BII(JNIEnv* env, jobject jdb,
jlong jdb_handle,
jbyteArray jkey, jint jkey_off,
jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
static const rocksdb::WriteOptions default_write_options =
rocksdb::WriteOptions();
rocksdb_put_helper(env, db, default_write_options, nullptr, jkey, jkey_off,
jkey_len, jval, jval_off, jval_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: put
* Signature: (J[BII[BIIJ)V
*/
void Java_org_rocksdb_RocksDB_put__J_3BII_3BIIJ(JNIEnv* env, jobject jdb,
jlong jdb_handle,
jbyteArray jkey, jint jkey_off,
jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len,
jlong jcf_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
static const rocksdb::WriteOptions default_write_options =
rocksdb::WriteOptions();
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
rocksdb_put_helper(env, db, default_write_options, cf_handle, jkey,
jkey_off, jkey_len, jval, jval_off, jval_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: put
* Signature: (JJ[BII[BII)V
*/
void Java_org_rocksdb_RocksDB_put__JJ_3BII_3BII(JNIEnv* env, jobject jdb,
jlong jdb_handle,
jlong jwrite_options_handle,
jbyteArray jkey, jint jkey_off,
jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* write_options = reinterpret_cast<rocksdb::WriteOptions*>(
jwrite_options_handle);
rocksdb_put_helper(env, db, *write_options, nullptr, jkey, jkey_off, jkey_len,
jval, jval_off, jval_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: put
* Signature: (JJ[BII[BIIJ)V
*/
void Java_org_rocksdb_RocksDB_put__JJ_3BII_3BIIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jwrite_options_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len, jlong jcf_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* write_options = reinterpret_cast<rocksdb::WriteOptions*>(
jwrite_options_handle);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
rocksdb_put_helper(env, db, *write_options, cf_handle, jkey, jkey_off,
jkey_len, jval, jval_off, jval_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
}
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::Write
/*
* Class: org_rocksdb_RocksDB
* Method: write0
* Signature: (JJJ)V
*/
void Java_org_rocksdb_RocksDB_write0(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jlong jwrite_options_handle, jlong jwb_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* write_options = reinterpret_cast<rocksdb::WriteOptions*>(
jwrite_options_handle);
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
rocksdb::Status s = db->Write(*write_options, wb);
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: write1
* Signature: (JJJ)V
*/
void Java_org_rocksdb_RocksDB_write1(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jlong jwrite_options_handle, jlong jwbwi_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* write_options = reinterpret_cast<rocksdb::WriteOptions*>(
jwrite_options_handle);
auto* wbwi = reinterpret_cast<rocksdb::WriteBatchWithIndex*>(jwbwi_handle);
auto* wb = wbwi->GetWriteBatch();
rocksdb::Status s = db->Write(*write_options, wb);
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::KeyMayExist
jboolean key_may_exist_helper(JNIEnv* env, rocksdb::DB* db,
const rocksdb::ReadOptions& read_opt,
rocksdb::ColumnFamilyHandle* cf_handle, jbyteArray jkey, jint jkey_off,
jint jkey_len, jobject jstring_builder, bool* has_exception) {
jbyte* key = new jbyte[jkey_len];
env->GetByteArrayRegion(jkey, jkey_off, jkey_len, key);
if(env->ExceptionCheck()) {
// exception thrown: ArrayIndexOutOfBoundsException
delete [] key;
*has_exception = true;
return false;
}
rocksdb::Slice key_slice(reinterpret_cast<char*>(key), jkey_len);
std::string value;
bool value_found = false;
bool keyMayExist;
if (cf_handle != nullptr) {
keyMayExist = db->KeyMayExist(read_opt, cf_handle, key_slice,
&value, &value_found);
} else {
keyMayExist = db->KeyMayExist(read_opt, key_slice,
&value, &value_found);
}
// cleanup
delete [] key;
// extract the value
if (value_found && !value.empty()) {
jobject jresult_string_builder =
rocksdb::StringBuilderJni::append(env, jstring_builder,
value.c_str());
if(jresult_string_builder == nullptr) {
*has_exception = true;
return false;
}
}
*has_exception = false;
return static_cast<jboolean>(keyMayExist);
}
/*
* Class: org_rocksdb_RocksDB
* Method: keyMayExist
* Signature: (J[BIILjava/lang/StringBuilder;)Z
*/
jboolean Java_org_rocksdb_RocksDB_keyMayExist__J_3BIILjava_lang_StringBuilder_2(
JNIEnv* env, jobject jdb, jlong jdb_handle, jbyteArray jkey, jint jkey_off,
jint jkey_len, jobject jstring_builder) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
bool has_exception = false;
return key_may_exist_helper(env, db, rocksdb::ReadOptions(),
nullptr, jkey, jkey_off, jkey_len, jstring_builder, &has_exception);
}
/*
* Class: org_rocksdb_RocksDB
* Method: keyMayExist
* Signature: (J[BIIJLjava/lang/StringBuilder;)Z
*/
jboolean Java_org_rocksdb_RocksDB_keyMayExist__J_3BIIJLjava_lang_StringBuilder_2(
JNIEnv* env, jobject jdb, jlong jdb_handle, jbyteArray jkey, jint jkey_off,
jint jkey_len, jlong jcf_handle, jobject jstring_builder) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(
jcf_handle);
if (cf_handle != nullptr) {
bool has_exception = false;
return key_may_exist_helper(env, db, rocksdb::ReadOptions(),
cf_handle, jkey, jkey_off, jkey_len, jstring_builder, &has_exception);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
return true;
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: keyMayExist
* Signature: (JJ[BIILjava/lang/StringBuilder;)Z
*/
jboolean Java_org_rocksdb_RocksDB_keyMayExist__JJ_3BIILjava_lang_StringBuilder_2(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jread_options_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len, jobject jstring_builder) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto& read_options = *reinterpret_cast<rocksdb::ReadOptions*>(
jread_options_handle);
bool has_exception = false;
return key_may_exist_helper(env, db, read_options,
nullptr, jkey, jkey_off, jkey_len, jstring_builder, &has_exception);
}
/*
* Class: org_rocksdb_RocksDB
* Method: keyMayExist
* Signature: (JJ[BIIJLjava/lang/StringBuilder;)Z
*/
jboolean Java_org_rocksdb_RocksDB_keyMayExist__JJ_3BIIJLjava_lang_StringBuilder_2(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jread_options_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len, jlong jcf_handle,
jobject jstring_builder) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto& read_options = *reinterpret_cast<rocksdb::ReadOptions*>(
jread_options_handle);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(
jcf_handle);
if (cf_handle != nullptr) {
bool has_exception = false;
return key_may_exist_helper(env, db, read_options, cf_handle,
jkey, jkey_off, jkey_len, jstring_builder, &has_exception);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
return true;
}
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::Get
jbyteArray rocksdb_get_helper(
JNIEnv* env, rocksdb::DB* db, const rocksdb::ReadOptions& read_opt,
rocksdb::ColumnFamilyHandle* column_family_handle, jbyteArray jkey,
jint jkey_off, jint jkey_len) {
jbyte* key = new jbyte[jkey_len];
env->GetByteArrayRegion(jkey, jkey_off, jkey_len, key);
if(env->ExceptionCheck()) {
// exception thrown: ArrayIndexOutOfBoundsException
delete [] key;
return nullptr;
}
rocksdb::Slice key_slice(
reinterpret_cast<char*>(key), jkey_len);
std::string value;
rocksdb::Status s;
if (column_family_handle != nullptr) {
s = db->Get(read_opt, column_family_handle, key_slice, &value);
} else {
// backwards compatibility
s = db->Get(read_opt, key_slice, &value);
}
// cleanup
delete [] key;
if (s.IsNotFound()) {
return nullptr;
}
if (s.ok()) {
jbyteArray jret_value = rocksdb::JniUtil::copyBytes(env, value);
if(jret_value == nullptr) {
// exception occurred
return nullptr;
}
return jret_value;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
return nullptr;
}
/*
* Class: org_rocksdb_RocksDB
* Method: get
* Signature: (J[BII)[B
*/
jbyteArray Java_org_rocksdb_RocksDB_get__J_3BII(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len) {
return rocksdb_get_helper(env,
reinterpret_cast<rocksdb::DB*>(jdb_handle),
rocksdb::ReadOptions(), nullptr,
jkey, jkey_off, jkey_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: get
* Signature: (J[BIIJ)[B
*/
jbyteArray Java_org_rocksdb_RocksDB_get__J_3BIIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len, jlong jcf_handle) {
auto db_handle = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
return rocksdb_get_helper(env, db_handle, rocksdb::ReadOptions(),
cf_handle, jkey, jkey_off, jkey_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
return nullptr;
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: get
* Signature: (JJ[BII)[B
*/
jbyteArray Java_org_rocksdb_RocksDB_get__JJ_3BII(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jropt_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len) {
return rocksdb_get_helper(env,
reinterpret_cast<rocksdb::DB*>(jdb_handle),
*reinterpret_cast<rocksdb::ReadOptions*>(jropt_handle), nullptr,
jkey, jkey_off, jkey_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: get
* Signature: (JJ[BIIJ)[B
*/
jbyteArray Java_org_rocksdb_RocksDB_get__JJ_3BIIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jropt_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len, jlong jcf_handle) {
auto* db_handle = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto& ro_opt = *reinterpret_cast<rocksdb::ReadOptions*>(jropt_handle);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
return rocksdb_get_helper(env, db_handle, ro_opt, cf_handle,
jkey, jkey_off, jkey_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
return nullptr;
}
}
jint rocksdb_get_helper(JNIEnv* env, rocksdb::DB* db,
const rocksdb::ReadOptions& read_options,
rocksdb::ColumnFamilyHandle* column_family_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len,
jbyteArray jval, jint jval_off, jint jval_len,
bool* has_exception) {
static const int kNotFound = -1;
static const int kStatusError = -2;
jbyte* key = new jbyte[jkey_len];
env->GetByteArrayRegion(jkey, jkey_off, jkey_len, key);
if(env->ExceptionCheck()) {
// exception thrown: OutOfMemoryError
delete [] key;
*has_exception = true;
return kStatusError;
}
rocksdb::Slice key_slice(reinterpret_cast<char*>(key), jkey_len);
// TODO(yhchiang): we might save one memory allocation here by adding
// a DB::Get() function which takes preallocated jbyte* as input.
std::string cvalue;
rocksdb::Status s;
if (column_family_handle != nullptr) {
s = db->Get(read_options, column_family_handle, key_slice, &cvalue);
} else {
// backwards compatibility
s = db->Get(read_options, key_slice, &cvalue);
}
// cleanup
delete [] key;
if (s.IsNotFound()) {
*has_exception = false;
return kNotFound;
} else if (!s.ok()) {
*has_exception = true;
// Here since we are throwing a Java exception from c++ side.
// As a result, c++ does not know calling this function will in fact
// throwing an exception. As a result, the execution flow will
// not stop here, and codes after this throw will still be
// executed.
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
// Return a dummy const value to avoid compilation error, although
// java side might not have a chance to get the return value :)
return kStatusError;
}
const jint cvalue_len = static_cast<jint>(cvalue.size());
const jint length = std::min(jval_len, cvalue_len);
env->SetByteArrayRegion(jval, jval_off, length,
reinterpret_cast<const jbyte*>(cvalue.c_str()));
if(env->ExceptionCheck()) {
// exception thrown: OutOfMemoryError
*has_exception = true;
return kStatusError;
}
*has_exception = false;
return cvalue_len;
}
inline void multi_get_helper_release_keys(JNIEnv* env,
std::vector<std::pair<jbyte*, jobject>> &keys_to_free) {
auto end = keys_to_free.end();
for (auto it = keys_to_free.begin(); it != end; ++it) {
delete [] it->first;
env->DeleteLocalRef(it->second);
}
keys_to_free.clear();
}
/**
* cf multi get
*
* @return byte[][] of values or nullptr if an exception occurs
*/
jobjectArray multi_get_helper(JNIEnv* env, jobject jdb, rocksdb::DB* db,
const rocksdb::ReadOptions& rOpt, jobjectArray jkeys,
jintArray jkey_offs, jintArray jkey_lens,
jlongArray jcolumn_family_handles) {
std::vector<rocksdb::ColumnFamilyHandle*> cf_handles;
if (jcolumn_family_handles != nullptr) {
const jsize len_cols = env->GetArrayLength(jcolumn_family_handles);
jlong* jcfh = env->GetLongArrayElements(jcolumn_family_handles, nullptr);
if(jcfh == nullptr) {
// exception thrown: OutOfMemoryError
return nullptr;
}
for (jsize i = 0; i < len_cols; i++) {
auto* cf_handle =
reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcfh[i]);
cf_handles.push_back(cf_handle);
}
env->ReleaseLongArrayElements(jcolumn_family_handles, jcfh, JNI_ABORT);
}
const jsize len_keys = env->GetArrayLength(jkeys);
if (env->EnsureLocalCapacity(len_keys) != 0) {
// exception thrown: OutOfMemoryError
return nullptr;
}
jint* jkey_off = env->GetIntArrayElements(jkey_offs, nullptr);
if(jkey_off == nullptr) {
// exception thrown: OutOfMemoryError
return nullptr;
}
jint* jkey_len = env->GetIntArrayElements(jkey_lens, nullptr);
if(jkey_len == nullptr) {
// exception thrown: OutOfMemoryError
env->ReleaseIntArrayElements(jkey_offs, jkey_off, JNI_ABORT);
return nullptr;
}
std::vector<rocksdb::Slice> keys;
std::vector<std::pair<jbyte*, jobject>> keys_to_free;
for (jsize i = 0; i < len_keys; i++) {
jobject jkey = env->GetObjectArrayElement(jkeys, i);
if(env->ExceptionCheck()) {
// exception thrown: ArrayIndexOutOfBoundsException
env->ReleaseIntArrayElements(jkey_lens, jkey_len, JNI_ABORT);
env->ReleaseIntArrayElements(jkey_offs, jkey_off, JNI_ABORT);
multi_get_helper_release_keys(env, keys_to_free);
return nullptr;
}
jbyteArray jkey_ba = reinterpret_cast<jbyteArray>(jkey);
const jint len_key = jkey_len[i];
jbyte* key = new jbyte[len_key];
env->GetByteArrayRegion(jkey_ba, jkey_off[i], len_key, key);
if(env->ExceptionCheck()) {
// exception thrown: ArrayIndexOutOfBoundsException
delete [] key;
env->DeleteLocalRef(jkey);
env->ReleaseIntArrayElements(jkey_lens, jkey_len, JNI_ABORT);
env->ReleaseIntArrayElements(jkey_offs, jkey_off, JNI_ABORT);
multi_get_helper_release_keys(env, keys_to_free);
return nullptr;
}
rocksdb::Slice key_slice(reinterpret_cast<char*>(key), len_key);
keys.push_back(key_slice);
keys_to_free.push_back(std::pair<jbyte*, jobject>(key, jkey));
}
// cleanup jkey_off and jken_len
env->ReleaseIntArrayElements(jkey_lens, jkey_len, JNI_ABORT);
env->ReleaseIntArrayElements(jkey_offs, jkey_off, JNI_ABORT);
std::vector<std::string> values;
std::vector<rocksdb::Status> s;
if (cf_handles.size() == 0) {
s = db->MultiGet(rOpt, keys, &values);
} else {
s = db->MultiGet(rOpt, cf_handles, keys, &values);
}
// free up allocated byte arrays
multi_get_helper_release_keys(env, keys_to_free);
// prepare the results
jobjectArray jresults =
rocksdb::ByteJni::new2dByteArray(env, static_cast<jsize>(s.size()));
if(jresults == nullptr) {
// exception occurred
return nullptr;
}
// TODO(AR) it is not clear to me why EnsureLocalCapacity is needed for the
// loop as we cleanup references with env->DeleteLocalRef(jentry_value);
if (env->EnsureLocalCapacity(static_cast<jint>(s.size())) != 0) {
// exception thrown: OutOfMemoryError
return nullptr;
}
// add to the jresults
for (std::vector<rocksdb::Status>::size_type i = 0; i != s.size(); i++) {
if (s[i].ok()) {
std::string* value = &values[i];
const jsize jvalue_len = static_cast<jsize>(value->size());
jbyteArray jentry_value = env->NewByteArray(jvalue_len);
if(jentry_value == nullptr) {
// exception thrown: OutOfMemoryError
return nullptr;
}
env->SetByteArrayRegion(jentry_value, 0, static_cast<jsize>(jvalue_len),
reinterpret_cast<const jbyte*>(value->c_str()));
if(env->ExceptionCheck()) {
// exception thrown: ArrayIndexOutOfBoundsException
env->DeleteLocalRef(jentry_value);
return nullptr;
}
env->SetObjectArrayElement(jresults, static_cast<jsize>(i), jentry_value);
if(env->ExceptionCheck()) {
// exception thrown: ArrayIndexOutOfBoundsException
env->DeleteLocalRef(jentry_value);
return nullptr;
}
env->DeleteLocalRef(jentry_value);
}
}
return jresults;
}
/*
* Class: org_rocksdb_RocksDB
* Method: multiGet
* Signature: (J[[B[I[I)[[B
*/
jobjectArray Java_org_rocksdb_RocksDB_multiGet__J_3_3B_3I_3I(
JNIEnv* env, jobject jdb, jlong jdb_handle, jobjectArray jkeys,
jintArray jkey_offs, jintArray jkey_lens) {
return multi_get_helper(env, jdb, reinterpret_cast<rocksdb::DB*>(jdb_handle),
rocksdb::ReadOptions(), jkeys, jkey_offs, jkey_lens, nullptr);
}
/*
* Class: org_rocksdb_RocksDB
* Method: multiGet
* Signature: (J[[B[I[I[J)[[B
*/
jobjectArray Java_org_rocksdb_RocksDB_multiGet__J_3_3B_3I_3I_3J(
JNIEnv* env, jobject jdb, jlong jdb_handle, jobjectArray jkeys,
jintArray jkey_offs, jintArray jkey_lens,
jlongArray jcolumn_family_handles) {
return multi_get_helper(env, jdb, reinterpret_cast<rocksdb::DB*>(jdb_handle),
rocksdb::ReadOptions(), jkeys, jkey_offs, jkey_lens,
jcolumn_family_handles);
}
/*
* Class: org_rocksdb_RocksDB
* Method: multiGet
* Signature: (JJ[[B[I[I)[[B
*/
jobjectArray Java_org_rocksdb_RocksDB_multiGet__JJ_3_3B_3I_3I(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jropt_handle,
jobjectArray jkeys, jintArray jkey_offs, jintArray jkey_lens) {
return multi_get_helper(env, jdb, reinterpret_cast<rocksdb::DB*>(jdb_handle),
*reinterpret_cast<rocksdb::ReadOptions*>(jropt_handle), jkeys, jkey_offs,
jkey_lens, nullptr);
}
/*
* Class: org_rocksdb_RocksDB
* Method: multiGet
* Signature: (JJ[[B[I[I[J)[[B
*/
jobjectArray Java_org_rocksdb_RocksDB_multiGet__JJ_3_3B_3I_3I_3J(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jropt_handle,
jobjectArray jkeys, jintArray jkey_offs, jintArray jkey_lens,
jlongArray jcolumn_family_handles) {
return multi_get_helper(env, jdb, reinterpret_cast<rocksdb::DB*>(jdb_handle),
*reinterpret_cast<rocksdb::ReadOptions*>(jropt_handle), jkeys, jkey_offs,
jkey_lens, jcolumn_family_handles);
}
/*
* Class: org_rocksdb_RocksDB
* Method: get
* Signature: (J[BII[BII)I
*/
jint Java_org_rocksdb_RocksDB_get__J_3BII_3BII(JNIEnv* env, jobject jdb,
jlong jdb_handle,
jbyteArray jkey, jint jkey_off,
jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len) {
bool has_exception = false;
return rocksdb_get_helper(env, reinterpret_cast<rocksdb::DB*>(jdb_handle),
rocksdb::ReadOptions(), nullptr, jkey, jkey_off,
jkey_len, jval, jval_off, jval_len,
&has_exception);
}
/*
* Class: org_rocksdb_RocksDB
* Method: get
* Signature: (J[BII[BIIJ)I
*/
jint Java_org_rocksdb_RocksDB_get__J_3BII_3BIIJ(JNIEnv* env, jobject jdb,
jlong jdb_handle,
jbyteArray jkey, jint jkey_off,
jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len,
jlong jcf_handle) {
auto* db_handle = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
bool has_exception = false;
return rocksdb_get_helper(env, db_handle, rocksdb::ReadOptions(), cf_handle,
jkey, jkey_off, jkey_len, jval, jval_off,
jval_len, &has_exception);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
// will never be evaluated
return 0;
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: get
* Signature: (JJ[BII[BII)I
*/
jint Java_org_rocksdb_RocksDB_get__JJ_3BII_3BII(JNIEnv* env, jobject jdb,
jlong jdb_handle,
jlong jropt_handle,
jbyteArray jkey, jint jkey_off,
jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len) {
bool has_exception = false;
return rocksdb_get_helper(
env, reinterpret_cast<rocksdb::DB*>(jdb_handle),
*reinterpret_cast<rocksdb::ReadOptions*>(jropt_handle), nullptr, jkey,
jkey_off, jkey_len, jval, jval_off, jval_len, &has_exception);
}
/*
* Class: org_rocksdb_RocksDB
* Method: get
* Signature: (JJ[BII[BIIJ)I
*/
jint Java_org_rocksdb_RocksDB_get__JJ_3BII_3BIIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jropt_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len, jlong jcf_handle) {
auto* db_handle = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto& ro_opt = *reinterpret_cast<rocksdb::ReadOptions*>(jropt_handle);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
bool has_exception = false;
return rocksdb_get_helper(env, db_handle, ro_opt, cf_handle, jkey, jkey_off,
jkey_len, jval, jval_off, jval_len,
&has_exception);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
// will never be evaluated
return 0;
}
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::Delete()
/**
* @return true if the delete succeeded, false if a Java Exception was thrown
*/
bool rocksdb_delete_helper(
JNIEnv* env, rocksdb::DB* db, const rocksdb::WriteOptions& write_options,
rocksdb::ColumnFamilyHandle* cf_handle, jbyteArray jkey, jint jkey_off,
jint jkey_len) {
jbyte* key = new jbyte[jkey_len];
env->GetByteArrayRegion(jkey, jkey_off, jkey_len, key);
if(env->ExceptionCheck()) {
// exception thrown: ArrayIndexOutOfBoundsException
delete [] key;
return false;
}
rocksdb::Slice key_slice(reinterpret_cast<char*>(key), jkey_len);
rocksdb::Status s;
if (cf_handle != nullptr) {
s = db->Delete(write_options, cf_handle, key_slice);
} else {
// backwards compatibility
s = db->Delete(write_options, key_slice);
}
// cleanup
delete [] key;
if (s.ok()) {
return true;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
return false;
}
/*
* Class: org_rocksdb_RocksDB
* Method: delete
* Signature: (J[BII)V
*/
void Java_org_rocksdb_RocksDB_delete__J_3BII(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
static const rocksdb::WriteOptions default_write_options =
rocksdb::WriteOptions();
rocksdb_delete_helper(env, db, default_write_options, nullptr,
jkey, jkey_off, jkey_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: delete
* Signature: (J[BIIJ)V
*/
void Java_org_rocksdb_RocksDB_delete__J_3BIIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len, jlong jcf_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
static const rocksdb::WriteOptions default_write_options =
rocksdb::WriteOptions();
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
rocksdb_delete_helper(env, db, default_write_options, cf_handle,
jkey, jkey_off, jkey_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: delete
* Signature: (JJ[BII)V
*/
void Java_org_rocksdb_RocksDB_delete__JJ_3BII(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jlong jwrite_options, jbyteArray jkey, jint jkey_off, jint jkey_len) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* write_options =
reinterpret_cast<rocksdb::WriteOptions*>(jwrite_options);
rocksdb_delete_helper(env, db, *write_options, nullptr, jkey, jkey_off,
jkey_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: delete
* Signature: (JJ[BIIJ)V
*/
void Java_org_rocksdb_RocksDB_delete__JJ_3BIIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jlong jwrite_options, jbyteArray jkey, jint jkey_off, jint jkey_len,
jlong jcf_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* write_options =
reinterpret_cast<rocksdb::WriteOptions*>(jwrite_options);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
rocksdb_delete_helper(env, db, *write_options, cf_handle, jkey, jkey_off,
jkey_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
}
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::SingleDelete()
/**
* @return true if the single delete succeeded, false if a Java Exception
* was thrown
*/
bool rocksdb_single_delete_helper(
JNIEnv* env, rocksdb::DB* db, const rocksdb::WriteOptions& write_options,
rocksdb::ColumnFamilyHandle* cf_handle, jbyteArray jkey, jint jkey_len) {
jbyte* key = env->GetByteArrayElements(jkey, nullptr);
if(key == nullptr) {
// exception thrown: OutOfMemoryError
return false;
}
rocksdb::Slice key_slice(reinterpret_cast<char*>(key), jkey_len);
rocksdb::Status s;
if (cf_handle != nullptr) {
s = db->SingleDelete(write_options, cf_handle, key_slice);
} else {
// backwards compatibility
s = db->SingleDelete(write_options, key_slice);
}
// trigger java unref on key and value.
// by passing JNI_ABORT, it will simply release the reference without
// copying the result back to the java byte array.
env->ReleaseByteArrayElements(jkey, key, JNI_ABORT);
if (s.ok()) {
return true;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
return false;
}
/*
* Class: org_rocksdb_RocksDB
* Method: singleDelete
* Signature: (J[BI)V
*/
void Java_org_rocksdb_RocksDB_singleDelete__J_3BI(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jbyteArray jkey, jint jkey_len) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
static const rocksdb::WriteOptions default_write_options =
rocksdb::WriteOptions();
rocksdb_single_delete_helper(env, db, default_write_options, nullptr,
jkey, jkey_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: singleDelete
* Signature: (J[BIJ)V
*/
void Java_org_rocksdb_RocksDB_singleDelete__J_3BIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jbyteArray jkey, jint jkey_len, jlong jcf_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
static const rocksdb::WriteOptions default_write_options =
rocksdb::WriteOptions();
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
rocksdb_single_delete_helper(env, db, default_write_options, cf_handle,
jkey, jkey_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: singleDelete
* Signature: (JJ[BIJ)V
*/
void Java_org_rocksdb_RocksDB_singleDelete__JJ_3BI(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jlong jwrite_options, jbyteArray jkey, jint jkey_len) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* write_options =
reinterpret_cast<rocksdb::WriteOptions*>(jwrite_options);
rocksdb_single_delete_helper(env, db, *write_options, nullptr, jkey,
jkey_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: singleDelete
* Signature: (JJ[BIJ)V
*/
void Java_org_rocksdb_RocksDB_singleDelete__JJ_3BIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jlong jwrite_options, jbyteArray jkey, jint jkey_len,
jlong jcf_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* write_options =
reinterpret_cast<rocksdb::WriteOptions*>(jwrite_options);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
rocksdb_single_delete_helper(env, db, *write_options, cf_handle, jkey,
jkey_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
}
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::Merge
/**
* @return true if the merge succeeded, false if a Java Exception was thrown
*/
bool rocksdb_merge_helper(JNIEnv* env, rocksdb::DB* db,
const rocksdb::WriteOptions& write_options,
rocksdb::ColumnFamilyHandle* cf_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len,
jbyteArray jval, jint jval_off, jint jval_len) {
jbyte* key = new jbyte[jkey_len];
env->GetByteArrayRegion(jkey, jkey_off, jkey_len, key);
if(env->ExceptionCheck()) {
// exception thrown: ArrayIndexOutOfBoundsException
delete [] key;
return false;
}
rocksdb::Slice key_slice(reinterpret_cast<char*>(key), jkey_len);
jbyte* value = new jbyte[jkey_len];
env->GetByteArrayRegion(jval, jval_off, jval_len, value);
if(env->ExceptionCheck()) {
// exception thrown: ArrayIndexOutOfBoundsException
delete [] value;
delete [] key;
return false;
}
rocksdb::Slice value_slice(reinterpret_cast<char*>(value), jval_len);
rocksdb::Status s;
if (cf_handle != nullptr) {
s = db->Merge(write_options, cf_handle, key_slice, value_slice);
} else {
s = db->Merge(write_options, key_slice, value_slice);
}
// cleanup
delete [] value;
delete [] key;
if (s.ok()) {
return true;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
return false;
}
/*
* Class: org_rocksdb_RocksDB
* Method: merge
* Signature: (J[BII[BII)V
*/
void Java_org_rocksdb_RocksDB_merge__J_3BII_3BII(JNIEnv* env, jobject jdb,
jlong jdb_handle,
jbyteArray jkey, jint jkey_off,
jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
static const rocksdb::WriteOptions default_write_options =
rocksdb::WriteOptions();
rocksdb_merge_helper(env, db, default_write_options, nullptr, jkey, jkey_off,
jkey_len, jval, jval_off, jval_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: merge
* Signature: (J[BII[BIIJ)V
*/
void Java_org_rocksdb_RocksDB_merge__J_3BII_3BIIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle, jbyteArray jkey, jint jkey_off,
jint jkey_len, jbyteArray jval, jint jval_off, jint jval_len,
jlong jcf_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
static const rocksdb::WriteOptions default_write_options =
rocksdb::WriteOptions();
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
rocksdb_merge_helper(env, db, default_write_options, cf_handle, jkey,
jkey_off, jkey_len, jval, jval_off, jval_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: merge
* Signature: (JJ[BII[BII)V
*/
void Java_org_rocksdb_RocksDB_merge__JJ_3BII_3BII(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jwrite_options_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* write_options =
reinterpret_cast<rocksdb::WriteOptions*>(jwrite_options_handle);
rocksdb_merge_helper(env, db, *write_options, nullptr, jkey, jkey_off,
jkey_len, jval, jval_off, jval_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: merge
* Signature: (JJ[BII[BIIJ)V
*/
void Java_org_rocksdb_RocksDB_merge__JJ_3BII_3BIIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jwrite_options_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len, jlong jcf_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* write_options =
reinterpret_cast<rocksdb::WriteOptions*>(jwrite_options_handle);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
rocksdb_merge_helper(env, db, *write_options, cf_handle, jkey, jkey_off,
jkey_len, jval, jval_off, jval_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
}
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::~DB()
/*
* Class: org_rocksdb_RocksDB
* Method: disposeInternal
* Signature: (J)V
*/
void Java_org_rocksdb_RocksDB_disposeInternal(
JNIEnv* env, jobject java_db, jlong jhandle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jhandle);
assert(db != nullptr);
delete db;
}
jlong rocksdb_iterator_helper(
rocksdb::DB* db, rocksdb::ReadOptions read_options,
rocksdb::ColumnFamilyHandle* cf_handle) {
rocksdb::Iterator* iterator = nullptr;
if (cf_handle != nullptr) {
iterator = db->NewIterator(read_options, cf_handle);
} else {
iterator = db->NewIterator(read_options);
}
return reinterpret_cast<jlong>(iterator);
}
/*
* Class: org_rocksdb_RocksDB
* Method: iterator
* Signature: (J)J
*/
jlong Java_org_rocksdb_RocksDB_iterator__J(
JNIEnv* env, jobject jdb, jlong db_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(db_handle);
return rocksdb_iterator_helper(db, rocksdb::ReadOptions(),
nullptr);
}
/*
* Class: org_rocksdb_RocksDB
* Method: iterator
* Signature: (JJ)J
*/
jlong Java_org_rocksdb_RocksDB_iterator__JJ(
JNIEnv* env, jobject jdb, jlong db_handle,
jlong jread_options_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(db_handle);
auto& read_options = *reinterpret_cast<rocksdb::ReadOptions*>(
jread_options_handle);
return rocksdb_iterator_helper(db, read_options,
nullptr);
}
/*
* Class: org_rocksdb_RocksDB
* Method: iteratorCF
* Signature: (JJ)J
*/
jlong Java_org_rocksdb_RocksDB_iteratorCF__JJ(
JNIEnv* env, jobject jdb, jlong db_handle, jlong jcf_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(db_handle);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
return rocksdb_iterator_helper(db, rocksdb::ReadOptions(),
cf_handle);
}
/*
* Class: org_rocksdb_RocksDB
* Method: iteratorCF
* Signature: (JJJ)J
*/
jlong Java_org_rocksdb_RocksDB_iteratorCF__JJJ(
JNIEnv* env, jobject jdb, jlong db_handle, jlong jcf_handle,
jlong jread_options_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(db_handle);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
auto& read_options = *reinterpret_cast<rocksdb::ReadOptions*>(
jread_options_handle);
return rocksdb_iterator_helper(db, read_options,
cf_handle);
}
/*
* Class: org_rocksdb_RocksDB
* Method: iterators
* Signature: (J[JJ)[J
*/
jlongArray Java_org_rocksdb_RocksDB_iterators(
JNIEnv* env, jobject jdb, jlong db_handle,
jlongArray jcolumn_family_handles, jlong jread_options_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(db_handle);
auto& read_options = *reinterpret_cast<rocksdb::ReadOptions*>(
jread_options_handle);
std::vector<rocksdb::ColumnFamilyHandle*> cf_handles;
if (jcolumn_family_handles != nullptr) {
const jsize len_cols = env->GetArrayLength(jcolumn_family_handles);
jlong* jcfh = env->GetLongArrayElements(jcolumn_family_handles, nullptr);
if(jcfh == nullptr) {
// exception thrown: OutOfMemoryError
return nullptr;
}
for (jsize i = 0; i < len_cols; i++) {
auto* cf_handle =
reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcfh[i]);
cf_handles.push_back(cf_handle);
}
env->ReleaseLongArrayElements(jcolumn_family_handles, jcfh, JNI_ABORT);
}
std::vector<rocksdb::Iterator*> iterators;
rocksdb::Status s = db->NewIterators(read_options,
cf_handles, &iterators);
if (s.ok()) {
jlongArray jLongArray =
env->NewLongArray(static_cast<jsize>(iterators.size()));
if(jLongArray == nullptr) {
// exception thrown: OutOfMemoryError
return nullptr;
}
for (std::vector<rocksdb::Iterator*>::size_type i = 0;
i < iterators.size(); i++) {
env->SetLongArrayRegion(jLongArray, static_cast<jsize>(i), 1,
reinterpret_cast<const jlong*>(&iterators[i]));
if(env->ExceptionCheck()) {
// exception thrown: ArrayIndexOutOfBoundsException
env->DeleteLocalRef(jLongArray);
return nullptr;
}
}
return jLongArray;
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
return nullptr;
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: getDefaultColumnFamily
* Signature: (J)J
*/
jlong Java_org_rocksdb_RocksDB_getDefaultColumnFamily(
JNIEnv* env, jobject jobj, jlong jdb_handle) {
auto* db_handle = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* cf_handle = db_handle->DefaultColumnFamily();
return reinterpret_cast<jlong>(cf_handle);
}
/*
* Class: org_rocksdb_RocksDB
* Method: createColumnFamily
* Signature: (J[BJ)J
*/
jlong Java_org_rocksdb_RocksDB_createColumnFamily(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jbyteArray jcolumn_name, jlong jcolumn_options) {
rocksdb::ColumnFamilyHandle* handle;
jboolean has_exception = JNI_FALSE;
std::string column_name = rocksdb::JniUtil::byteString<std::string>(env,
jcolumn_name,
[](const char* str, const size_t len) { return std::string(str, len); },
&has_exception);
if(has_exception == JNI_TRUE) {
// exception occurred
return 0;
}
auto* db_handle = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* cfOptions =
reinterpret_cast<rocksdb::ColumnFamilyOptions*>(jcolumn_options);
rocksdb::Status s = db_handle->CreateColumnFamily(
*cfOptions, column_name, &handle);
if (s.ok()) {
return reinterpret_cast<jlong>(handle);
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
return 0;
}
/*
* Class: org_rocksdb_RocksDB
* Method: dropColumnFamily
* Signature: (JJ)V;
*/
void Java_org_rocksdb_RocksDB_dropColumnFamily(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jcf_handle) {
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
auto* db_handle = reinterpret_cast<rocksdb::DB*>(jdb_handle);
rocksdb::Status s = db_handle->DropColumnFamily(cf_handle);
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
/*
* Method: getSnapshot
* Signature: (J)J
*/
jlong Java_org_rocksdb_RocksDB_getSnapshot(
JNIEnv* env, jobject jdb, jlong db_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(db_handle);
const rocksdb::Snapshot* snapshot = db->GetSnapshot();
return reinterpret_cast<jlong>(snapshot);
}
/*
* Method: releaseSnapshot
* Signature: (JJ)V
*/
void Java_org_rocksdb_RocksDB_releaseSnapshot(
JNIEnv* env, jobject jdb, jlong db_handle, jlong snapshot_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(db_handle);
auto* snapshot = reinterpret_cast<rocksdb::Snapshot*>(snapshot_handle);
db->ReleaseSnapshot(snapshot);
}
/*
* Class: org_rocksdb_RocksDB
* Method: getProperty0
* Signature: (JLjava/lang/String;I)Ljava/lang/String;
*/
jstring Java_org_rocksdb_RocksDB_getProperty0__JLjava_lang_String_2I(
JNIEnv* env, jobject jdb, jlong db_handle, jstring jproperty,
jint jproperty_len) {
const char* property = env->GetStringUTFChars(jproperty, nullptr);
if(property == nullptr) {
// exception thrown: OutOfMemoryError
return nullptr;
}
rocksdb::Slice property_slice(property, jproperty_len);
auto *db = reinterpret_cast<rocksdb::DB*>(db_handle);
std::string property_value;
bool retCode = db->GetProperty(property_slice, &property_value);
env->ReleaseStringUTFChars(jproperty, property);
if (retCode) {
return env->NewStringUTF(property_value.c_str());
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, rocksdb::Status::NotFound());
return nullptr;
}
/*
* Class: org_rocksdb_RocksDB
* Method: getProperty0
* Signature: (JJLjava/lang/String;I)Ljava/lang/String;
*/
jstring Java_org_rocksdb_RocksDB_getProperty0__JJLjava_lang_String_2I(
JNIEnv* env, jobject jdb, jlong db_handle, jlong jcf_handle,
jstring jproperty, jint jproperty_len) {
const char* property = env->GetStringUTFChars(jproperty, nullptr);
if(property == nullptr) {
// exception thrown: OutOfMemoryError
return nullptr;
}
rocksdb::Slice property_slice(property, jproperty_len);
auto* db = reinterpret_cast<rocksdb::DB*>(db_handle);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
std::string property_value;
bool retCode = db->GetProperty(cf_handle, property_slice, &property_value);
env->ReleaseStringUTFChars(jproperty, property);
if (retCode) {
return env->NewStringUTF(property_value.c_str());
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, rocksdb::Status::NotFound());
return nullptr;
}
/*
* Class: org_rocksdb_RocksDB
* Method: getLongProperty
* Signature: (JLjava/lang/String;I)L;
*/
jlong Java_org_rocksdb_RocksDB_getLongProperty__JLjava_lang_String_2I(
JNIEnv* env, jobject jdb, jlong db_handle, jstring jproperty,
jint jproperty_len) {
const char* property = env->GetStringUTFChars(jproperty, nullptr);
if(property == nullptr) {
// exception thrown: OutOfMemoryError
return 0;
}
rocksdb::Slice property_slice(property, jproperty_len);
auto* db = reinterpret_cast<rocksdb::DB*>(db_handle);
uint64_t property_value = 0;
bool retCode = db->GetIntProperty(property_slice, &property_value);
env->ReleaseStringUTFChars(jproperty, property);
if (retCode) {
return property_value;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, rocksdb::Status::NotFound());
return 0;
}
/*
* Class: org_rocksdb_RocksDB
* Method: getLongProperty
* Signature: (JJLjava/lang/String;I)L;
*/
jlong Java_org_rocksdb_RocksDB_getLongProperty__JJLjava_lang_String_2I(
JNIEnv* env, jobject jdb, jlong db_handle, jlong jcf_handle,
jstring jproperty, jint jproperty_len) {
const char* property = env->GetStringUTFChars(jproperty, nullptr);
if(property == nullptr) {
// exception thrown: OutOfMemoryError
return 0;
}
rocksdb::Slice property_slice(property, jproperty_len);
auto* db = reinterpret_cast<rocksdb::DB*>(db_handle);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
uint64_t property_value;
bool retCode = db->GetIntProperty(cf_handle, property_slice, &property_value);
env->ReleaseStringUTFChars(jproperty, property);
if (retCode) {
return property_value;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, rocksdb::Status::NotFound());
return 0;
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::Flush
void rocksdb_flush_helper(
JNIEnv* env, rocksdb::DB* db, const rocksdb::FlushOptions& flush_options,
rocksdb::ColumnFamilyHandle* column_family_handle) {
rocksdb::Status s;
if (column_family_handle != nullptr) {
s = db->Flush(flush_options, column_family_handle);
} else {
s = db->Flush(flush_options);
}
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: flush
* Signature: (JJ)V
*/
void Java_org_rocksdb_RocksDB_flush__JJ(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jlong jflush_options) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* flush_options =
reinterpret_cast<rocksdb::FlushOptions*>(jflush_options);
rocksdb_flush_helper(env, db, *flush_options, nullptr);
}
/*
* Class: org_rocksdb_RocksDB
* Method: flush
* Signature: (JJJ)V
*/
void Java_org_rocksdb_RocksDB_flush__JJJ(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jlong jflush_options, jlong jcf_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* flush_options =
reinterpret_cast<rocksdb::FlushOptions*>(jflush_options);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
rocksdb_flush_helper(env, db, *flush_options, cf_handle);
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::CompactRange - Full
void rocksdb_compactrange_helper(JNIEnv* env, rocksdb::DB* db,
rocksdb::ColumnFamilyHandle* cf_handle, jboolean jreduce_level,
jint jtarget_level, jint jtarget_path_id) {
rocksdb::Status s;
rocksdb::CompactRangeOptions compact_options;
compact_options.change_level = jreduce_level;
compact_options.target_level = jtarget_level;
compact_options.target_path_id = static_cast<uint32_t>(jtarget_path_id);
if (cf_handle != nullptr) {
s = db->CompactRange(compact_options, cf_handle, nullptr, nullptr);
} else {
// backwards compatibility
s = db->CompactRange(compact_options, nullptr, nullptr);
}
if (s.ok()) {
return;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
/*
* Class: org_rocksdb_RocksDB
* Method: compactRange0
* Signature: (JZII)V
*/
void Java_org_rocksdb_RocksDB_compactRange0__JZII(JNIEnv* env,
jobject jdb, jlong jdb_handle, jboolean jreduce_level,
jint jtarget_level, jint jtarget_path_id) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
rocksdb_compactrange_helper(env, db, nullptr, jreduce_level,
jtarget_level, jtarget_path_id);
}
/*
* Class: org_rocksdb_RocksDB
* Method: compactRange
* Signature: (JZIIJ)V
*/
void Java_org_rocksdb_RocksDB_compactRange__JZIIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jboolean jreduce_level, jint jtarget_level,
jint jtarget_path_id, jlong jcf_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
rocksdb_compactrange_helper(env, db, cf_handle, jreduce_level,
jtarget_level, jtarget_path_id);
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::CompactRange - Range
/**
* @return true if the compact range succeeded, false if a Java Exception
* was thrown
*/
bool rocksdb_compactrange_helper(JNIEnv* env, rocksdb::DB* db,
rocksdb::ColumnFamilyHandle* cf_handle, jbyteArray jbegin, jint jbegin_len,
jbyteArray jend, jint jend_len, jboolean jreduce_level, jint jtarget_level,
jint jtarget_path_id) {
jbyte* begin = env->GetByteArrayElements(jbegin, nullptr);
if(begin == nullptr) {
// exception thrown: OutOfMemoryError
return false;
}
jbyte* end = env->GetByteArrayElements(jend, nullptr);
if(end == nullptr) {
// exception thrown: OutOfMemoryError
env->ReleaseByteArrayElements(jbegin, begin, JNI_ABORT);
return false;
}
const rocksdb::Slice begin_slice(reinterpret_cast<char*>(begin), jbegin_len);
const rocksdb::Slice end_slice(reinterpret_cast<char*>(end), jend_len);
rocksdb::Status s;
rocksdb::CompactRangeOptions compact_options;
compact_options.change_level = jreduce_level;
compact_options.target_level = jtarget_level;
compact_options.target_path_id = static_cast<uint32_t>(jtarget_path_id);
if (cf_handle != nullptr) {
s = db->CompactRange(compact_options, cf_handle, &begin_slice, &end_slice);
} else {
// backwards compatibility
s = db->CompactRange(compact_options, &begin_slice, &end_slice);
}
env->ReleaseByteArrayElements(jend, begin, JNI_ABORT);
env->ReleaseByteArrayElements(jbegin, end, JNI_ABORT);
if (s.ok()) {
return true;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
return false;
}
/*
* Class: org_rocksdb_RocksDB
* Method: compactRange0
* Signature: (J[BI[BIZII)V
*/
void Java_org_rocksdb_RocksDB_compactRange0__J_3BI_3BIZII(JNIEnv* env,
jobject jdb, jlong jdb_handle, jbyteArray jbegin, jint jbegin_len,
jbyteArray jend, jint jend_len, jboolean jreduce_level,
jint jtarget_level, jint jtarget_path_id) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
rocksdb_compactrange_helper(env, db, nullptr, jbegin, jbegin_len,
jend, jend_len, jreduce_level, jtarget_level, jtarget_path_id);
}
/*
* Class: org_rocksdb_RocksDB
* Method: compactRange
* Signature: (JJ[BI[BIZII)V
*/
void Java_org_rocksdb_RocksDB_compactRange__J_3BI_3BIZIIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle, jbyteArray jbegin,
jint jbegin_len, jbyteArray jend, jint jend_len,
jboolean jreduce_level, jint jtarget_level,
jint jtarget_path_id, jlong jcf_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
rocksdb_compactrange_helper(env, db, cf_handle, jbegin, jbegin_len,
jend, jend_len, jreduce_level, jtarget_level, jtarget_path_id);
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::PauseBackgroundWork
/*
* Class: org_rocksdb_RocksDB
* Method: pauseBackgroundWork
* Signature: (J)V
*/
void Java_org_rocksdb_RocksDB_pauseBackgroundWork(
JNIEnv* env, jobject jobj, jlong jdb_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto s = db->PauseBackgroundWork();
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::ContinueBackgroundWork
/*
* Class: org_rocksdb_RocksDB
* Method: continueBackgroundWork
* Signature: (J)V
*/
void Java_org_rocksdb_RocksDB_continueBackgroundWork(
JNIEnv* env, jobject jobj, jlong jdb_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto s = db->ContinueBackgroundWork();
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::GetLatestSequenceNumber
/*
* Class: org_rocksdb_RocksDB
* Method: getLatestSequenceNumber
* Signature: (J)V
*/
jlong Java_org_rocksdb_RocksDB_getLatestSequenceNumber(JNIEnv* env,
jobject jdb, jlong jdb_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
return db->GetLatestSequenceNumber();
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB enable/disable file deletions
/*
* Class: org_rocksdb_RocksDB
* Method: enableFileDeletions
* Signature: (J)V
*/
void Java_org_rocksdb_RocksDB_disableFileDeletions(JNIEnv* env,
jobject jdb, jlong jdb_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
rocksdb::Status s = db->DisableFileDeletions();
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: enableFileDeletions
* Signature: (JZ)V
*/
void Java_org_rocksdb_RocksDB_enableFileDeletions(JNIEnv* env,
jobject jdb, jlong jdb_handle, jboolean jforce) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
rocksdb::Status s = db->EnableFileDeletions(jforce);
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::GetUpdatesSince
/*
* Class: org_rocksdb_RocksDB
* Method: getUpdatesSince
* Signature: (JJ)J
*/
jlong Java_org_rocksdb_RocksDB_getUpdatesSince(JNIEnv* env,
jobject jdb, jlong jdb_handle, jlong jsequence_number) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
rocksdb::SequenceNumber sequence_number =
static_cast<rocksdb::SequenceNumber>(jsequence_number);
std::unique_ptr<rocksdb::TransactionLogIterator> iter;
rocksdb::Status s = db->GetUpdatesSince(sequence_number, &iter);
if (s.ok()) {
return reinterpret_cast<jlong>(iter.release());
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
return 0;
}
/*
* Class: org_rocksdb_RocksDB
* Method: setOptions
* Signature: (JJ[Ljava/lang/String;[Ljava/lang/String;)V
*/
void Java_org_rocksdb_RocksDB_setOptions(JNIEnv* env, jobject jdb,
jlong jdb_handle, jlong jcf_handle, jobjectArray jkeys,
jobjectArray jvalues) {
const jsize len = env->GetArrayLength(jkeys);
assert(len == env->GetArrayLength(jvalues));
std::unordered_map<std::string, std::string> options_map;
for (jsize i = 0; i < len; i++) {
jobject jobj_key = env->GetObjectArrayElement(jkeys, i);
if(env->ExceptionCheck()) {
// exception thrown: ArrayIndexOutOfBoundsException
return;
}
jobject jobj_value = env->GetObjectArrayElement(jvalues, i);
if(env->ExceptionCheck()) {
// exception thrown: ArrayIndexOutOfBoundsException
env->DeleteLocalRef(jobj_key);
return;
}
jstring jkey = reinterpret_cast<jstring>(jobj_key);
jstring jval = reinterpret_cast<jstring>(jobj_value);
const char* key = env->GetStringUTFChars(jkey, nullptr);
if(key == nullptr) {
// exception thrown: OutOfMemoryError
env->DeleteLocalRef(jobj_value);
env->DeleteLocalRef(jobj_key);
return;
}
const char* value = env->GetStringUTFChars(jval, nullptr);
if(value == nullptr) {
// exception thrown: OutOfMemoryError
env->ReleaseStringUTFChars(jkey, key);
env->DeleteLocalRef(jobj_value);
env->DeleteLocalRef(jobj_key);
return;
}
std::string s_key(key);
std::string s_value(value);
options_map[s_key] = s_value;
env->ReleaseStringUTFChars(jkey, key);
env->ReleaseStringUTFChars(jval, value);
env->DeleteLocalRef(jobj_key);
env->DeleteLocalRef(jobj_value);
}
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
db->SetOptions(cf_handle, options_map);
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::AddFile
/*
* Class: org_rocksdb_RocksDB
* Method: addFile
* Signature: (JJ[Ljava/lang/String;IZ)V
*/
void Java_org_rocksdb_RocksDB_addFile__JJ_3Ljava_lang_String_2IZ(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jcf_handle,
jobjectArray jfile_path_list, jint jfile_path_list_len,
jboolean jmove_file) {
jboolean has_exception = JNI_FALSE;
std::vector<std::string> file_path_list =
rocksdb::JniUtil::copyStrings(env, jfile_path_list, jfile_path_list_len,
&has_exception);
if(has_exception == JNI_TRUE) {
// exception occured
return;
}
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* column_family =
reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
rocksdb::IngestExternalFileOptions ifo;
ifo.move_files = static_cast<bool>(jmove_file);
ifo.snapshot_consistency = true;
ifo.allow_global_seqno = false;
ifo.allow_blocking_flush = false;
rocksdb::Status s =
db->IngestExternalFile(column_family, file_path_list, ifo);
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
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