96 lines
3.2 KiB
C++
96 lines
3.2 KiB
C++
// Copyright (c) 2014, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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//
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// This file implements the "bridge" between Java and C++ and enables
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// calling c++ rocksdb::BackupableDB and rocksdb::BackupableDBOptions methods
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// from Java side.
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#include <stdio.h>
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#include <stdlib.h>
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#include <jni.h>
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#include <string>
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#include "include/org_rocksdb_BackupableDB.h"
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#include "include/org_rocksdb_BackupableDBOptions.h"
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#include "rocksjni/portal.h"
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#include "utilities/backupable_db.h"
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/*
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* Class: org_rocksdb_BackupableDB
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* Method: open
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* Signature: (JJ)V
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*/
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void Java_org_rocksdb_BackupableDB_open(
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JNIEnv* env, jobject jbdb, jlong jdb_handle, jlong jopt_handle) {
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auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
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auto opt = reinterpret_cast<rocksdb::BackupableDBOptions*>(jopt_handle);
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auto bdb = new rocksdb::BackupableDB(db, *opt);
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// as BackupableDB extends RocksDB on the java side, we can reuse
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// the RocksDB portal here.
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rocksdb::RocksDBJni::setHandle(env, jbdb, bdb);
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}
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/*
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* Class: org_rocksdb_BackupableDB
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* Method: createNewBackup
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* Signature: (JZ)V
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*/
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void Java_org_rocksdb_BackupableDB_createNewBackup(
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JNIEnv* env, jobject jbdb, jlong jhandle, jboolean jflag) {
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reinterpret_cast<rocksdb::BackupableDB*>(jhandle)->CreateNewBackup(jflag);
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}
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///////////////////////////////////////////////////////////////////////////
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// BackupDBOptions
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/*
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* Class: org_rocksdb_BackupableDBOptions
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* Method: newBackupableDBOptions
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* Signature: (Ljava/lang/String;)V
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*/
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void Java_org_rocksdb_BackupableDBOptions_newBackupableDBOptions(
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JNIEnv* env, jobject jobj, jstring jpath, jboolean jshare_table_files,
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jboolean jsync, jboolean jdestroy_old_data, jboolean jbackup_log_files,
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jlong jbackup_rate_limit, jlong jrestore_rate_limit) {
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jbackup_rate_limit = (jbackup_rate_limit <= 0) ? 0 : jbackup_rate_limit;
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jrestore_rate_limit = (jrestore_rate_limit <= 0) ? 0 : jrestore_rate_limit;
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const char* cpath = env->GetStringUTFChars(jpath, 0);
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auto bopt = new rocksdb::BackupableDBOptions(cpath, nullptr,
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jshare_table_files, nullptr, jsync, jdestroy_old_data, jbackup_log_files,
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jbackup_rate_limit, jrestore_rate_limit);
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env->ReleaseStringUTFChars(jpath, cpath);
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rocksdb::BackupableDBOptionsJni::setHandle(env, jobj, bopt);
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}
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/*
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* Class: org_rocksdb_BackupableDBOptions
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* Method: backupDir
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* Signature: (J)Ljava/lang/String;
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*/
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jstring Java_org_rocksdb_BackupableDBOptions_backupDir(
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JNIEnv* env, jobject jopt, jlong jhandle, jstring jpath) {
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auto bopt = reinterpret_cast<rocksdb::BackupableDBOptions*>(jhandle);
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return env->NewStringUTF(bopt->backup_dir.c_str());
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}
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/*
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* Class: org_rocksdb_BackupableDBOptions
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* Method: disposeInternal
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* Signature: (J)V
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*/
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void Java_org_rocksdb_BackupableDBOptions_disposeInternal(
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JNIEnv* env, jobject jopt, jlong jhandle) {
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auto bopt = reinterpret_cast<rocksdb::BackupableDBOptions*>(jhandle);
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assert(bopt);
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delete bopt;
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rocksdb::BackupableDBOptionsJni::setHandle(env, jopt, nullptr);
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}
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