mirror of
https://github.com/facebook/rocksdb.git
synced 2024-11-25 22:44:05 +00:00
44ebc24dca
Summary: In GenerateOneFileChecksum(), RocksDB reads the file and computes its checksum. A rate limiter can be passed to the constructor of RandomAccessFileReader so that read I/O can be rate limited. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7811 Test Plan: make check Reviewed By: cheng-chang Differential Revision: D25699896 Pulled By: zhichao-cao fbshipit-source-id: e2688bc1126c543979a3bcf91dda784bd7b74164
71 lines
2.7 KiB
C++
71 lines
2.7 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under both the GPLv2 (found in the
|
|
// COPYING file in the root directory) and Apache 2.0 License
|
|
// (found in the LICENSE.Apache file in the root directory).
|
|
//
|
|
#pragma once
|
|
#include <string>
|
|
|
|
#include "file/filename.h"
|
|
#include "options/db_options.h"
|
|
#include "rocksdb/env.h"
|
|
#include "rocksdb/file_system.h"
|
|
#include "rocksdb/sst_file_writer.h"
|
|
#include "rocksdb/status.h"
|
|
#include "rocksdb/types.h"
|
|
#include "trace_replay/io_tracer.h"
|
|
|
|
namespace ROCKSDB_NAMESPACE {
|
|
// use_fsync maps to options.use_fsync, which determines the way that
|
|
// the file is synced after copying.
|
|
extern IOStatus CopyFile(FileSystem* fs, const std::string& source,
|
|
const std::string& destination, uint64_t size,
|
|
bool use_fsync,
|
|
const std::shared_ptr<IOTracer>& io_tracer = nullptr);
|
|
|
|
extern IOStatus CreateFile(FileSystem* fs, const std::string& destination,
|
|
const std::string& contents, bool use_fsync);
|
|
|
|
extern Status DeleteDBFile(const ImmutableDBOptions* db_options,
|
|
const std::string& fname,
|
|
const std::string& path_to_sync, const bool force_bg,
|
|
const bool force_fg);
|
|
|
|
extern bool IsWalDirSameAsDBPath(const ImmutableDBOptions* db_options);
|
|
|
|
extern IOStatus GenerateOneFileChecksum(
|
|
FileSystem* fs, const std::string& file_path,
|
|
FileChecksumGenFactory* checksum_factory,
|
|
const std::string& requested_checksum_func_name, std::string* file_checksum,
|
|
std::string* file_checksum_func_name,
|
|
size_t verify_checksums_readahead_size, bool allow_mmap_reads,
|
|
std::shared_ptr<IOTracer>& io_tracer, RateLimiter* rate_limiter = nullptr);
|
|
|
|
inline IOStatus PrepareIOFromReadOptions(const ReadOptions& ro, Env* env,
|
|
IOOptions& opts) {
|
|
if (!env) {
|
|
env = Env::Default();
|
|
}
|
|
|
|
if (ro.deadline.count()) {
|
|
std::chrono::microseconds now = std::chrono::microseconds(env->NowMicros());
|
|
// Ensure there is atleast 1us available. We don't want to pass a value of
|
|
// 0 as that means no timeout
|
|
if (now >= ro.deadline) {
|
|
return IOStatus::TimedOut("Deadline exceeded");
|
|
}
|
|
opts.timeout = ro.deadline - now;
|
|
}
|
|
|
|
if (ro.io_timeout.count() &&
|
|
(!opts.timeout.count() || ro.io_timeout < opts.timeout)) {
|
|
opts.timeout = ro.io_timeout;
|
|
}
|
|
return IOStatus::OK();
|
|
}
|
|
|
|
// Test method to delete the input directory and all of its contents.
|
|
// This method is destructive and is meant for use only in tests!!!
|
|
Status DestroyDir(Env* env, const std::string& dir);
|
|
} // namespace ROCKSDB_NAMESPACE
|