bb6fd15a6e
Summary: Add a skeleton binding and test for BackupableDB which shows that BackupableDB and RocksDB can share the same JNI calls. Test Plan: make rocksdbjava make jtest Reviewers: haobo, ankgup87, sdong, dhruba Reviewed By: haobo CC: leveldb Differential Revision: https://reviews.facebook.net/D17793
86 lines
2.7 KiB
C++
86 lines
2.7 KiB
C++
// Copyright (c) 2014, 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 <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <jni.h>
|
|
#include <string>
|
|
|
|
#include "include/org_rocksdb_BackupableDB.h"
|
|
#include "include/org_rocksdb_BackupableDBOptions.h"
|
|
#include "rocksjni/portal.h"
|
|
#include "utilities/backupable_db.h"
|
|
|
|
/*
|
|
* Class: org_rocksdb_BackupableDB
|
|
* Method: open
|
|
* Signature: (JJ)V
|
|
*/
|
|
void Java_org_rocksdb_BackupableDB_open(
|
|
JNIEnv* env, jobject jbdb, jlong jdb_handle, jlong jopt_handle) {
|
|
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
|
|
auto opt = reinterpret_cast<rocksdb::BackupableDBOptions*>(jopt_handle);
|
|
auto bdb = new rocksdb::BackupableDB(db, *opt);
|
|
|
|
// as BackupableDB extends RocksDB on the java side, we can reuse
|
|
// the RocksDB portal here.
|
|
rocksdb::RocksDBJni::setHandle(env, jbdb, bdb);
|
|
}
|
|
|
|
/*
|
|
* Class: org_rocksdb_BackupableDB
|
|
* Method: createNewBackup
|
|
* Signature: (JZ)V
|
|
*/
|
|
void Java_org_rocksdb_BackupableDB_createNewBackup(
|
|
JNIEnv* env, jobject jbdb, jlong jhandle, jboolean jflag) {
|
|
reinterpret_cast<rocksdb::BackupableDB*>(jhandle)->CreateNewBackup(jflag);
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// BackupDBOptions
|
|
|
|
/*
|
|
* Class: org_rocksdb_BackupableDBOptions
|
|
* Method: newBackupableDBOptions
|
|
* Signature: (Ljava/lang/String;)V
|
|
*/
|
|
void Java_org_rocksdb_BackupableDBOptions_newBackupableDBOptions(
|
|
JNIEnv* env, jobject jobj, jstring jpath) {
|
|
const char* cpath = env->GetStringUTFChars(jpath, 0);
|
|
auto bopt = new rocksdb::BackupableDBOptions(cpath);
|
|
env->ReleaseStringUTFChars(jpath, cpath);
|
|
|
|
rocksdb::BackupableDBOptionsJni::setHandle(env, jobj, bopt);
|
|
}
|
|
|
|
/*
|
|
* Class: org_rocksdb_BackupableDBOptions
|
|
* Method: backupDir
|
|
* Signature: (J)Ljava/lang/String;
|
|
*/
|
|
jstring Java_org_rocksdb_BackupableDBOptions_backupDir(
|
|
JNIEnv* env, jobject jopt, jlong jhandle, jstring jpath) {
|
|
auto bopt = reinterpret_cast<rocksdb::BackupableDBOptions*>(jhandle);
|
|
return env->NewStringUTF(bopt->backup_dir.c_str());
|
|
}
|
|
|
|
/*
|
|
* Class: org_rocksdb_BackupableDBOptions
|
|
* Method: dispose
|
|
* Signature: (J)V
|
|
*/
|
|
void Java_org_rocksdb_BackupableDBOptions_dispose(
|
|
JNIEnv* env, jobject jopt, jlong jhandle) {
|
|
auto bopt = reinterpret_cast<rocksdb::BackupableDBOptions*>(jhandle);
|
|
assert(bopt);
|
|
delete bopt;
|
|
|
|
rocksdb::BackupableDBOptionsJni::setHandle(env, jopt, nullptr);
|
|
}
|