mirror of https://github.com/facebook/rocksdb.git
135 lines
4.6 KiB
C++
135 lines
4.6 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root 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_NAMESPACE::OptionsUtil methods from Java side.
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#include <jni.h>
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#include <string>
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#include "include/org_rocksdb_OptionsUtil.h"
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#include "rocksdb/db.h"
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#include "rocksdb/env.h"
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#include "rocksdb/utilities/options_util.h"
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#include "rocksjni/portal.h"
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void build_column_family_descriptor_list(
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JNIEnv* env, jobject jcfds,
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std::vector<ROCKSDB_NAMESPACE::ColumnFamilyDescriptor>& cf_descs) {
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jmethodID add_mid = ROCKSDB_NAMESPACE::ListJni::getListAddMethodId(env);
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if (add_mid == nullptr) {
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// exception occurred accessing method
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return;
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}
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// Column family descriptor
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for (ROCKSDB_NAMESPACE::ColumnFamilyDescriptor& cfd : cf_descs) {
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// Construct a ColumnFamilyDescriptor java object
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jobject jcfd =
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ROCKSDB_NAMESPACE::ColumnFamilyDescriptorJni::construct(env, &cfd);
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if (env->ExceptionCheck()) {
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// exception occurred constructing object
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if (jcfd != nullptr) {
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env->DeleteLocalRef(jcfd);
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}
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return;
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}
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// Add the object to java list.
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jboolean rs = env->CallBooleanMethod(jcfds, add_mid, jcfd);
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if (env->ExceptionCheck() || rs == JNI_FALSE) {
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// exception occurred calling method, or could not add
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if (jcfd != nullptr) {
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env->DeleteLocalRef(jcfd);
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}
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return;
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}
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}
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}
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/*
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* Class: org_rocksdb_OptionsUtil
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* Method: loadLatestOptions
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* Signature: (Ljava/lang/String;JLjava/util/List;Z)V
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*/
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void Java_org_rocksdb_OptionsUtil_loadLatestOptions(
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JNIEnv* env, jclass /*jcls*/, jstring jdbpath, jlong jenv_handle,
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jlong jdb_opts_handle, jobject jcfds, jboolean ignore_unknown_options) {
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jboolean has_exception = JNI_FALSE;
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auto db_path =
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ROCKSDB_NAMESPACE::JniUtil::copyStdString(env, jdbpath, &has_exception);
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if (has_exception == JNI_TRUE) {
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// exception occurred
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return;
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}
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std::vector<ROCKSDB_NAMESPACE::ColumnFamilyDescriptor> cf_descs;
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ROCKSDB_NAMESPACE::Status s = ROCKSDB_NAMESPACE::LoadLatestOptions(
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db_path, reinterpret_cast<ROCKSDB_NAMESPACE::Env*>(jenv_handle),
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reinterpret_cast<ROCKSDB_NAMESPACE::DBOptions*>(jdb_opts_handle),
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&cf_descs, ignore_unknown_options);
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if (!s.ok()) {
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// error, raise an exception
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ROCKSDB_NAMESPACE::RocksDBExceptionJni::ThrowNew(env, s);
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} else {
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build_column_family_descriptor_list(env, jcfds, cf_descs);
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}
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}
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/*
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* Class: org_rocksdb_OptionsUtil
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* Method: loadOptionsFromFile
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* Signature: (Ljava/lang/String;JJLjava/util/List;Z)V
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*/
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void Java_org_rocksdb_OptionsUtil_loadOptionsFromFile(
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JNIEnv* env, jclass /*jcls*/, jstring jopts_file_name, jlong jenv_handle,
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jlong jdb_opts_handle, jobject jcfds, jboolean ignore_unknown_options) {
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jboolean has_exception = JNI_FALSE;
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auto opts_file_name = ROCKSDB_NAMESPACE::JniUtil::copyStdString(
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env, jopts_file_name, &has_exception);
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if (has_exception == JNI_TRUE) {
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// exception occurred
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return;
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}
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std::vector<ROCKSDB_NAMESPACE::ColumnFamilyDescriptor> cf_descs;
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ROCKSDB_NAMESPACE::Status s = ROCKSDB_NAMESPACE::LoadOptionsFromFile(
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opts_file_name, reinterpret_cast<ROCKSDB_NAMESPACE::Env*>(jenv_handle),
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reinterpret_cast<ROCKSDB_NAMESPACE::DBOptions*>(jdb_opts_handle),
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&cf_descs, ignore_unknown_options);
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if (!s.ok()) {
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// error, raise an exception
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ROCKSDB_NAMESPACE::RocksDBExceptionJni::ThrowNew(env, s);
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} else {
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build_column_family_descriptor_list(env, jcfds, cf_descs);
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}
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}
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/*
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* Class: org_rocksdb_OptionsUtil
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* Method: getLatestOptionsFileName
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* Signature: (Ljava/lang/String;J)Ljava/lang/String;
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*/
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jstring Java_org_rocksdb_OptionsUtil_getLatestOptionsFileName(
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JNIEnv* env, jclass /*jcls*/, jstring jdbpath, jlong jenv_handle) {
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jboolean has_exception = JNI_FALSE;
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auto db_path =
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ROCKSDB_NAMESPACE::JniUtil::copyStdString(env, jdbpath, &has_exception);
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if (has_exception == JNI_TRUE) {
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// exception occurred
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return nullptr;
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}
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std::string options_file_name;
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ROCKSDB_NAMESPACE::Status s = ROCKSDB_NAMESPACE::GetLatestOptionsFileName(
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db_path, reinterpret_cast<ROCKSDB_NAMESPACE::Env*>(jenv_handle),
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&options_file_name);
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if (!s.ok()) {
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// error, raise an exception
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ROCKSDB_NAMESPACE::RocksDBExceptionJni::ThrowNew(env, s);
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return nullptr;
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} else {
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return env->NewStringUTF(options_file_name.c_str());
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}
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}
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