c8f3606731
Summary: JNI wrappers for LoadLatestOptions, LoadOptionsFromFile and GetLatestOptionsFileName APIs. Closes https://github.com/facebook/rocksdb/pull/2898 Differential Revision: D5857934 Pulled By: sagar0 fbshipit-source-id: 68b79e83eab8de9416e3f1fef73e11cf7947e90a
115 lines
3.9 KiB
C++
115 lines
3.9 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::OptionsUtil methods from Java side.
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#include <jni.h>
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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::ColumnFamilyDescriptor>& cf_descs) {
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jmethodID add_mid = rocksdb::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::ColumnFamilyDescriptor& cfd : cf_descs) {
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// Construct a ColumnFamilyDescriptor java object
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jobject jcfd = rocksdb::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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const char* db_path = env->GetStringUTFChars(jdbpath, nullptr);
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std::vector<rocksdb::ColumnFamilyDescriptor> cf_descs;
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rocksdb::Status s = rocksdb::LoadLatestOptions(
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db_path, reinterpret_cast<rocksdb::Env*>(jenv_handle),
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reinterpret_cast<rocksdb::DBOptions*>(jdb_opts_handle), &cf_descs,
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ignore_unknown_options);
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env->ReleaseStringUTFChars(jdbpath, db_path);
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if (!s.ok()) {
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rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
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}
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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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* 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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const char* opts_file_name = env->GetStringUTFChars(jopts_file_name, nullptr);
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std::vector<rocksdb::ColumnFamilyDescriptor> cf_descs;
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rocksdb::Status s = rocksdb::LoadOptionsFromFile(
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opts_file_name, reinterpret_cast<rocksdb::Env*>(jenv_handle),
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reinterpret_cast<rocksdb::DBOptions*>(jdb_opts_handle), &cf_descs,
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ignore_unknown_options);
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env->ReleaseStringUTFChars(jopts_file_name, opts_file_name);
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if (!s.ok()) {
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rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
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}
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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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* 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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const char* db_path = env->GetStringUTFChars(jdbpath, nullptr);
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std::string options_file_name;
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if (db_path != nullptr) {
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rocksdb::GetLatestOptionsFileName(
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db_path, reinterpret_cast<rocksdb::Env*>(jenv_handle),
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&options_file_name);
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}
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env->ReleaseStringUTFChars(jdbpath, db_path);
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return env->NewStringUTF(options_file_name.c_str());
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}
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