fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
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447 lines
12 KiB
447 lines
12 KiB
// 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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// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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#include "rocksdb/env.h"
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#include <thread>
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#include "logging/env_logger.h"
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#include "memory/arena.h"
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#include "options/db_options.h"
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#include "port/port.h"
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#include "port/sys_time.h"
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#include "rocksdb/options.h"
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#include "util/autovector.h"
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namespace rocksdb {
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Env::~Env() {
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}
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Status Env::NewLogger(const std::string& fname,
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std::shared_ptr<Logger>* result) {
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return NewEnvLogger(fname, this, result);
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}
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std::string Env::PriorityToString(Env::Priority priority) {
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switch (priority) {
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case Env::Priority::BOTTOM:
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return "Bottom";
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case Env::Priority::LOW:
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return "Low";
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case Env::Priority::HIGH:
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return "High";
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case Env::Priority::USER:
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return "User";
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case Env::Priority::TOTAL:
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assert(false);
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}
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return "Invalid";
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}
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uint64_t Env::GetThreadID() const {
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std::hash<std::thread::id> hasher;
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return hasher(std::this_thread::get_id());
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}
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Status Env::ReuseWritableFile(const std::string& fname,
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const std::string& old_fname,
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std::unique_ptr<WritableFile>* result,
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const EnvOptions& options) {
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Status s = RenameFile(old_fname, fname);
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if (!s.ok()) {
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return s;
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}
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return NewWritableFile(fname, result, options);
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}
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Status Env::GetChildrenFileAttributes(const std::string& dir,
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std::vector<FileAttributes>* result) {
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assert(result != nullptr);
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std::vector<std::string> child_fnames;
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Status s = GetChildren(dir, &child_fnames);
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if (!s.ok()) {
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return s;
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}
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result->resize(child_fnames.size());
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size_t result_size = 0;
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for (size_t i = 0; i < child_fnames.size(); ++i) {
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const std::string path = dir + "/" + child_fnames[i];
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if (!(s = GetFileSize(path, &(*result)[result_size].size_bytes)).ok()) {
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if (FileExists(path).IsNotFound()) {
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// The file may have been deleted since we listed the directory
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continue;
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}
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return s;
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}
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(*result)[result_size].name = std::move(child_fnames[i]);
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result_size++;
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}
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result->resize(result_size);
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return Status::OK();
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}
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SequentialFile::~SequentialFile() {
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}
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RandomAccessFile::~RandomAccessFile() {
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}
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WritableFile::~WritableFile() {
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}
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MemoryMappedFileBuffer::~MemoryMappedFileBuffer() {}
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Logger::~Logger() {}
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Status Logger::Close() {
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if (!closed_) {
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closed_ = true;
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return CloseImpl();
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} else {
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return Status::OK();
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}
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}
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Status Logger::CloseImpl() { return Status::NotSupported(); }
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FileLock::~FileLock() {
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}
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void LogFlush(Logger *info_log) {
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if (info_log) {
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info_log->Flush();
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}
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}
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static void Logv(Logger *info_log, const char* format, va_list ap) {
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if (info_log && info_log->GetInfoLogLevel() <= InfoLogLevel::INFO_LEVEL) {
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info_log->Logv(InfoLogLevel::INFO_LEVEL, format, ap);
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}
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}
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void Log(Logger* info_log, const char* format, ...) {
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va_list ap;
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va_start(ap, format);
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Logv(info_log, format, ap);
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va_end(ap);
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}
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void Logger::Logv(const InfoLogLevel log_level, const char* format, va_list ap) {
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static const char* kInfoLogLevelNames[5] = { "DEBUG", "INFO", "WARN",
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"ERROR", "FATAL" };
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if (log_level < log_level_) {
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return;
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}
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if (log_level == InfoLogLevel::INFO_LEVEL) {
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// Doesn't print log level if it is INFO level.
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// This is to avoid unexpected performance regression after we add
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// the feature of log level. All the logs before we add the feature
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// are INFO level. We don't want to add extra costs to those existing
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// logging.
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Logv(format, ap);
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} else if (log_level == InfoLogLevel::HEADER_LEVEL) {
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LogHeader(format, ap);
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} else {
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char new_format[500];
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snprintf(new_format, sizeof(new_format) - 1, "[%s] %s",
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kInfoLogLevelNames[log_level], format);
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Logv(new_format, ap);
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}
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}
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static void Logv(const InfoLogLevel log_level, Logger *info_log, const char *format, va_list ap) {
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if (info_log && info_log->GetInfoLogLevel() <= log_level) {
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if (log_level == InfoLogLevel::HEADER_LEVEL) {
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info_log->LogHeader(format, ap);
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} else {
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info_log->Logv(log_level, format, ap);
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}
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}
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}
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void Log(const InfoLogLevel log_level, Logger* info_log, const char* format,
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...) {
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va_list ap;
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va_start(ap, format);
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Logv(log_level, info_log, format, ap);
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va_end(ap);
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}
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static void Headerv(Logger *info_log, const char *format, va_list ap) {
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if (info_log) {
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info_log->LogHeader(format, ap);
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}
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}
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void Header(Logger* info_log, const char* format, ...) {
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va_list ap;
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va_start(ap, format);
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Headerv(info_log, format, ap);
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va_end(ap);
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}
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static void Debugv(Logger* info_log, const char* format, va_list ap) {
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if (info_log && info_log->GetInfoLogLevel() <= InfoLogLevel::DEBUG_LEVEL) {
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info_log->Logv(InfoLogLevel::DEBUG_LEVEL, format, ap);
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}
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}
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void Debug(Logger* info_log, const char* format, ...) {
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va_list ap;
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va_start(ap, format);
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Debugv(info_log, format, ap);
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va_end(ap);
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}
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static void Infov(Logger* info_log, const char* format, va_list ap) {
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if (info_log && info_log->GetInfoLogLevel() <= InfoLogLevel::INFO_LEVEL) {
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info_log->Logv(InfoLogLevel::INFO_LEVEL, format, ap);
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}
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}
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void Info(Logger* info_log, const char* format, ...) {
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va_list ap;
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va_start(ap, format);
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Infov(info_log, format, ap);
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va_end(ap);
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}
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static void Warnv(Logger* info_log, const char* format, va_list ap) {
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if (info_log && info_log->GetInfoLogLevel() <= InfoLogLevel::WARN_LEVEL) {
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info_log->Logv(InfoLogLevel::WARN_LEVEL, format, ap);
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}
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}
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void Warn(Logger* info_log, const char* format, ...) {
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va_list ap;
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va_start(ap, format);
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Warnv(info_log, format, ap);
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va_end(ap);
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}
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static void Errorv(Logger* info_log, const char* format, va_list ap) {
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if (info_log && info_log->GetInfoLogLevel() <= InfoLogLevel::ERROR_LEVEL) {
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info_log->Logv(InfoLogLevel::ERROR_LEVEL, format, ap);
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}
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}
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void Error(Logger* info_log, const char* format, ...) {
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va_list ap;
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va_start(ap, format);
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Errorv(info_log, format, ap);
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va_end(ap);
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}
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static void Fatalv(Logger* info_log, const char* format, va_list ap) {
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if (info_log && info_log->GetInfoLogLevel() <= InfoLogLevel::FATAL_LEVEL) {
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info_log->Logv(InfoLogLevel::FATAL_LEVEL, format, ap);
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}
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}
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void Fatal(Logger* info_log, const char* format, ...) {
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va_list ap;
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va_start(ap, format);
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Fatalv(info_log, format, ap);
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va_end(ap);
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}
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void LogFlush(const std::shared_ptr<Logger>& info_log) {
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LogFlush(info_log.get());
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}
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void Log(const InfoLogLevel log_level, const std::shared_ptr<Logger>& info_log,
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const char* format, ...) {
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va_list ap;
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va_start(ap, format);
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Logv(log_level, info_log.get(), format, ap);
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va_end(ap);
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}
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void Header(const std::shared_ptr<Logger>& info_log, const char* format, ...) {
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va_list ap;
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va_start(ap, format);
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Headerv(info_log.get(), format, ap);
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va_end(ap);
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}
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void Debug(const std::shared_ptr<Logger>& info_log, const char* format, ...) {
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va_list ap;
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va_start(ap, format);
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Debugv(info_log.get(), format, ap);
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va_end(ap);
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}
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void Info(const std::shared_ptr<Logger>& info_log, const char* format, ...) {
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va_list ap;
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va_start(ap, format);
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Infov(info_log.get(), format, ap);
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va_end(ap);
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}
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void Warn(const std::shared_ptr<Logger>& info_log, const char* format, ...) {
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va_list ap;
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va_start(ap, format);
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Warnv(info_log.get(), format, ap);
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va_end(ap);
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}
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void Error(const std::shared_ptr<Logger>& info_log, const char* format, ...) {
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va_list ap;
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va_start(ap, format);
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Errorv(info_log.get(), format, ap);
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va_end(ap);
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}
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void Fatal(const std::shared_ptr<Logger>& info_log, const char* format, ...) {
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va_list ap;
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va_start(ap, format);
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Fatalv(info_log.get(), format, ap);
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va_end(ap);
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}
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void Log(const std::shared_ptr<Logger>& info_log, const char* format, ...) {
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va_list ap;
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va_start(ap, format);
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Logv(info_log.get(), format, ap);
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va_end(ap);
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}
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Status WriteStringToFile(Env* env, const Slice& data, const std::string& fname,
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bool should_sync) {
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std::unique_ptr<WritableFile> file;
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EnvOptions soptions;
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Status s = env->NewWritableFile(fname, &file, soptions);
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if (!s.ok()) {
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return s;
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}
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s = file->Append(data);
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if (s.ok() && should_sync) {
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s = file->Sync();
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}
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if (!s.ok()) {
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env->DeleteFile(fname);
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}
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return s;
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}
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Status ReadFileToString(Env* env, const std::string& fname, std::string* data) {
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EnvOptions soptions;
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data->clear();
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std::unique_ptr<SequentialFile> file;
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Status s = env->NewSequentialFile(fname, &file, soptions);
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if (!s.ok()) {
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return s;
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}
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static const int kBufferSize = 8192;
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char* space = new char[kBufferSize];
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while (true) {
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Slice fragment;
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s = file->Read(kBufferSize, &fragment, space);
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if (!s.ok()) {
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break;
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}
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data->append(fragment.data(), fragment.size());
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if (fragment.empty()) {
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break;
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}
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}
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delete[] space;
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return s;
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}
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EnvWrapper::~EnvWrapper() {
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}
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namespace { // anonymous namespace
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void AssignEnvOptions(EnvOptions* env_options, const DBOptions& options) {
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env_options->use_mmap_reads = options.allow_mmap_reads;
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env_options->use_mmap_writes = options.allow_mmap_writes;
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env_options->use_direct_reads = options.use_direct_reads;
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env_options->set_fd_cloexec = options.is_fd_close_on_exec;
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env_options->bytes_per_sync = options.bytes_per_sync;
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env_options->compaction_readahead_size = options.compaction_readahead_size;
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env_options->random_access_max_buffer_size =
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options.random_access_max_buffer_size;
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env_options->rate_limiter = options.rate_limiter.get();
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env_options->writable_file_max_buffer_size =
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options.writable_file_max_buffer_size;
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env_options->allow_fallocate = options.allow_fallocate;
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env_options->strict_bytes_per_sync = options.strict_bytes_per_sync;
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}
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}
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EnvOptions Env::OptimizeForLogWrite(const EnvOptions& env_options,
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const DBOptions& db_options) const {
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EnvOptions optimized_env_options(env_options);
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optimized_env_options.bytes_per_sync = db_options.wal_bytes_per_sync;
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optimized_env_options.writable_file_max_buffer_size =
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db_options.writable_file_max_buffer_size;
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return optimized_env_options;
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}
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EnvOptions Env::OptimizeForManifestWrite(const EnvOptions& env_options) const {
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return env_options;
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}
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EnvOptions Env::OptimizeForLogRead(const EnvOptions& env_options) const {
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EnvOptions optimized_env_options(env_options);
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optimized_env_options.use_direct_reads = false;
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return optimized_env_options;
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}
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EnvOptions Env::OptimizeForManifestRead(const EnvOptions& env_options) const {
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EnvOptions optimized_env_options(env_options);
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optimized_env_options.use_direct_reads = false;
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return optimized_env_options;
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}
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EnvOptions Env::OptimizeForCompactionTableWrite(
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const EnvOptions& env_options, const ImmutableDBOptions& db_options) const {
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EnvOptions optimized_env_options(env_options);
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optimized_env_options.use_direct_writes =
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db_options.use_direct_io_for_flush_and_compaction;
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return optimized_env_options;
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}
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EnvOptions Env::OptimizeForCompactionTableRead(
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const EnvOptions& env_options, const ImmutableDBOptions& db_options) const {
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EnvOptions optimized_env_options(env_options);
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optimized_env_options.use_direct_reads = db_options.use_direct_reads;
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return optimized_env_options;
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}
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EnvOptions::EnvOptions(const DBOptions& options) {
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AssignEnvOptions(this, options);
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}
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EnvOptions::EnvOptions() {
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DBOptions options;
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AssignEnvOptions(this, options);
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}
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Status NewEnvLogger(const std::string& fname, Env* env,
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std::shared_ptr<Logger>* result) {
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EnvOptions options;
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// TODO: Tune the buffer size.
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options.writable_file_max_buffer_size = 1024 * 1024;
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std::unique_ptr<WritableFile> writable_file;
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const auto status = env->NewWritableFile(fname, &writable_file, options);
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if (!status.ok()) {
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return status;
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}
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*result = std::make_shared<EnvLogger>(std::move(writable_file), fname,
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options, env);
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return Status::OK();
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}
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} // namespace rocksdb
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