rocksdb/java/rocksjni/restorejni.cc

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// 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::RestoreBackupableDB and rocksdb::RestoreOptions methods
// from Java side.
#include <stdio.h>
#include <stdlib.h>
#include <jni.h>
#include <string>
#include "include/org_rocksdb_RestoreOptions.h"
#include "include/org_rocksdb_RestoreBackupableDB.h"
#include "rocksjni/portal.h"
#include "rocksdb/utilities/backupable_db.h"
/*
* Class: org_rocksdb_RestoreOptions
* Method: newRestoreOptions
* Signature: (Z)J
*/
jlong Java_org_rocksdb_RestoreOptions_newRestoreOptions(JNIEnv* env,
jobject jobj, jboolean keep_log_files) {
auto ropt = new rocksdb::RestoreOptions(keep_log_files);
return reinterpret_cast<jlong>(ropt);
}
/*
* Class: org_rocksdb_RestoreOptions
* Method: dispose
* Signature: (J)V
*/
void Java_org_rocksdb_RestoreOptions_dispose(JNIEnv* env, jobject jobj,
jlong jhandle) {
auto ropt = reinterpret_cast<rocksdb::RestoreOptions*>(jhandle);
assert(ropt);
delete ropt;
}
/*
* Class: org_rocksdb_RestoreBackupableDB
* Method: newRestoreBackupableDB
* Signature: (J)J
*/
jlong Java_org_rocksdb_RestoreBackupableDB_newRestoreBackupableDB(JNIEnv* env,
jobject jobj, jlong jopt_handle) {
auto opt = reinterpret_cast<rocksdb::BackupableDBOptions*>(jopt_handle);
auto rdb = new rocksdb::RestoreBackupableDB(rocksdb::Env::Default(), *opt);
return reinterpret_cast<jlong>(rdb);
}
/*
* Class: org_rocksdb_RestoreBackupableDB
* Method: restoreDBFromBackup0
* Signature: (JJLjava/lang/String;Ljava/lang/String;J)V
*/
void Java_org_rocksdb_RestoreBackupableDB_restoreDBFromBackup0(JNIEnv* env,
jobject jobj, jlong jhandle, jlong jbackup_id, jstring jdb_dir,
jstring jwal_dir, jlong jopt_handle) {
auto opt = reinterpret_cast<rocksdb::RestoreOptions*>(jopt_handle);
const char* cdb_dir = env->GetStringUTFChars(jdb_dir, 0);
const char* cwal_dir = env->GetStringUTFChars(jwal_dir, 0);
auto rdb = reinterpret_cast<rocksdb::RestoreBackupableDB*>(jhandle);
rocksdb::Status s = rdb->RestoreDBFromBackup(
static_cast<rocksdb::BackupID>(jbackup_id), cdb_dir, cwal_dir, *opt);
env->ReleaseStringUTFChars(jdb_dir, cdb_dir);
env->ReleaseStringUTFChars(jwal_dir, cwal_dir);
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
/*
* Class: org_rocksdb_RestoreBackupableDB
* Method: restoreDBFromLatestBackup0
* Signature: (JLjava/lang/String;Ljava/lang/String;J)V
*/
void Java_org_rocksdb_RestoreBackupableDB_restoreDBFromLatestBackup0(
JNIEnv* env, jobject jobj, jlong jhandle, jstring jdb_dir, jstring jwal_dir,
jlong jopt_handle) {
auto opt = reinterpret_cast<rocksdb::RestoreOptions*>(jopt_handle);
const char* cdb_dir = env->GetStringUTFChars(jdb_dir, 0);
const char* cwal_dir = env->GetStringUTFChars(jwal_dir, 0);
auto rdb = reinterpret_cast<rocksdb::RestoreBackupableDB*>(jhandle);
rocksdb::Status s =
rdb->RestoreDBFromLatestBackup(cdb_dir, cwal_dir, *opt);
env->ReleaseStringUTFChars(jdb_dir, cdb_dir);
env->ReleaseStringUTFChars(jwal_dir, cwal_dir);
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
/*
* Class: org_rocksdb_RestoreBackupableDB
* Method: purgeOldBackups0
* Signature: (JI)V
*/
void Java_org_rocksdb_RestoreBackupableDB_purgeOldBackups0(JNIEnv* env,
jobject jobj, jlong jhandle, jint jnum_backups_to_keep) {
auto rdb = reinterpret_cast<rocksdb::RestoreBackupableDB*>(jhandle);
rocksdb::Status s = rdb->PurgeOldBackups(jnum_backups_to_keep);
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
/*
* Class: org_rocksdb_RestoreBackupableDB
* Method: deleteBackup0
* Signature: (JI)V
*/
void Java_org_rocksdb_RestoreBackupableDB_deleteBackup0(JNIEnv* env,
jobject jobj, jlong jhandle, jint jbackup_id) {
auto rdb = reinterpret_cast<rocksdb::RestoreBackupableDB*>(jhandle);
rocksdb::Status s = rdb->DeleteBackup(jbackup_id);
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
/*
* Class: org_rocksdb_RestoreBackupableDB
* Method: getBackupInfo
* Signature: (J)Ljava/util/List;
*/
jobject Java_org_rocksdb_RestoreBackupableDB_getBackupInfo(
JNIEnv* env, jobject jbdb, jlong jhandle) {
std::vector<rocksdb::BackupInfo> backup_infos;
reinterpret_cast<rocksdb::RestoreBackupableDB*>(jhandle)->
GetBackupInfo(&backup_infos);
return rocksdb::BackupInfoListJni::getBackupInfo(env,
backup_infos);
}
/*
* Class: org_rocksdb_RestoreBackupableDB
* Method: getCorruptedBackups
* Signature: (J)[I;
*/
jintArray Java_org_rocksdb_RestoreBackupableDB_getCorruptedBackups(
JNIEnv* env, jobject jbdb, jlong jhandle) {
std::vector<rocksdb::BackupID> backup_ids;
reinterpret_cast<rocksdb::RestoreBackupableDB*>(jhandle)->
GetCorruptedBackups(&backup_ids);
// store backupids in int array
const std::vector<rocksdb::BackupID>::size_type
kIdSize = backup_ids.size();
int int_backup_ids[kIdSize];
for (std::vector<rocksdb::BackupID>::size_type i = 0;
i != kIdSize; i++) {
int_backup_ids[i] = backup_ids[i];
}
// Store ints in java array
jintArray ret_backup_ids;
// Its ok to loose precision here (64->32)
jsize ret_backup_ids_size = static_cast<jsize>(kIdSize);
ret_backup_ids = env->NewIntArray(ret_backup_ids_size);
env->SetIntArrayRegion(ret_backup_ids, 0, ret_backup_ids_size,
int_backup_ids);
return ret_backup_ids;
}
/*
* Class: org_rocksdb_RestoreBackupableDB
* Method: garbageCollect
* Signature: (J)V
*/
void Java_org_rocksdb_RestoreBackupableDB_garbageCollect(
JNIEnv* env, jobject jobj, jlong jhandle) {
auto db = reinterpret_cast<rocksdb::RestoreBackupableDB*>(
jhandle);
rocksdb::Status s = db->GarbageCollect();
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
/*
* Class: org_rocksdb_RestoreBackupableDB
* Method: dispose
* Signature: (J)V
*/
void Java_org_rocksdb_RestoreBackupableDB_dispose(JNIEnv* env, jobject jobj,
jlong jhandle) {
auto ropt = reinterpret_cast<rocksdb::RestoreBackupableDB*>(jhandle);
assert(ropt);
delete ropt;
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}