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// 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).
#include "utilities/counted_fs.h"
#include <sstream>
#include "rocksdb/file_system.h"
#include "rocksdb/utilities/options_type.h"
namespace ROCKSDB_NAMESPACE {
namespace {
class CountedSequentialFile : public FSSequentialFileOwnerWrapper {
private:
CountedFileSystem* fs_;
public:
CountedSequentialFile(std::unique_ptr<FSSequentialFile>&& f,
CountedFileSystem* fs)
: FSSequentialFileOwnerWrapper(std::move(f)), fs_(fs) {}
~CountedSequentialFile() override { fs_->counters()->closes++; }
IOStatus Read(size_t n, const IOOptions& options, Slice* result,
char* scratch, IODebugContext* dbg) override {
IOStatus rv = target()->Read(n, options, result, scratch, dbg);
fs_->counters()->reads.RecordOp(rv, result->size());
return rv;
}
IOStatus PositionedRead(uint64_t offset, size_t n, const IOOptions& options,
Slice* result, char* scratch,
IODebugContext* dbg) override {
IOStatus rv =
target()->PositionedRead(offset, n, options, result, scratch, dbg);
fs_->counters()->reads.RecordOp(rv, result->size());
return rv;
}
};
class CountedRandomAccessFile : public FSRandomAccessFileOwnerWrapper {
private:
CountedFileSystem* fs_;
public:
CountedRandomAccessFile(std::unique_ptr<FSRandomAccessFile>&& f,
CountedFileSystem* fs)
: FSRandomAccessFileOwnerWrapper(std::move(f)), fs_(fs) {}
~CountedRandomAccessFile() override { fs_->counters()->closes++; }
IOStatus Read(uint64_t offset, size_t n, const IOOptions& options,
Slice* result, char* scratch,
IODebugContext* dbg) const override {
IOStatus rv = target()->Read(offset, n, options, result, scratch, dbg);
fs_->counters()->reads.RecordOp(rv, result->size());
return rv;
}
IOStatus MultiRead(FSReadRequest* reqs, size_t num_reqs,
const IOOptions& options, IODebugContext* dbg) override {
IOStatus rv = target()->MultiRead(reqs, num_reqs, options, dbg);
for (size_t r = 0; r < num_reqs; r++) {
fs_->counters()->reads.RecordOp(reqs[r].status, reqs[r].result.size());
}
return rv;
}
};
class CountedWritableFile : public FSWritableFileOwnerWrapper {
private:
CountedFileSystem* fs_;
public:
CountedWritableFile(std::unique_ptr<FSWritableFile>&& f,
CountedFileSystem* fs)
: FSWritableFileOwnerWrapper(std::move(f)), fs_(fs) {}
IOStatus Append(const Slice& data, const IOOptions& options,
IODebugContext* dbg) override {
IOStatus rv = target()->Append(data, options, dbg);
fs_->counters()->writes.RecordOp(rv, data.size());
return rv;
}
IOStatus Append(const Slice& data, const IOOptions& options,
const DataVerificationInfo& info,
IODebugContext* dbg) override {
IOStatus rv = target()->Append(data, options, info, dbg);
fs_->counters()->writes.RecordOp(rv, data.size());
return rv;
}
IOStatus PositionedAppend(const Slice& data, uint64_t offset,
const IOOptions& options,
IODebugContext* dbg) override {
IOStatus rv = target()->PositionedAppend(data, offset, options, dbg);
fs_->counters()->writes.RecordOp(rv, data.size());
return rv;
}
IOStatus PositionedAppend(const Slice& data, uint64_t offset,
const IOOptions& options,
const DataVerificationInfo& info,
IODebugContext* dbg) override {
IOStatus rv = target()->PositionedAppend(data, offset, options, info, dbg);
fs_->counters()->writes.RecordOp(rv, data.size());
return rv;
}
IOStatus Close(const IOOptions& options, IODebugContext* dbg) override {
IOStatus rv = target()->Close(options, dbg);
if (rv.ok()) {
fs_->counters()->closes++;
}
return rv;
}
IOStatus Flush(const IOOptions& options, IODebugContext* dbg) override {
IOStatus rv = target()->Flush(options, dbg);
if (rv.ok()) {
fs_->counters()->flushes++;
}
return rv;
}
IOStatus Sync(const IOOptions& options, IODebugContext* dbg) override {
IOStatus rv = target()->Sync(options, dbg);
if (rv.ok()) {
fs_->counters()->syncs++;
}
return rv;
}
IOStatus Fsync(const IOOptions& options, IODebugContext* dbg) override {
IOStatus rv = target()->Fsync(options, dbg);
if (rv.ok()) {
fs_->counters()->fsyncs++;
}
return rv;
}
IOStatus RangeSync(uint64_t offset, uint64_t nbytes, const IOOptions& options,
IODebugContext* dbg) override {
IOStatus rv = target()->RangeSync(offset, nbytes, options, dbg);
if (rv.ok()) {
fs_->counters()->syncs++;
}
return rv;
}
};
class CountedRandomRWFile : public FSRandomRWFileOwnerWrapper {
private:
mutable CountedFileSystem* fs_;
public:
CountedRandomRWFile(std::unique_ptr<FSRandomRWFile>&& f,
CountedFileSystem* fs)
: FSRandomRWFileOwnerWrapper(std::move(f)), fs_(fs) {}
IOStatus Write(uint64_t offset, const Slice& data, const IOOptions& options,
IODebugContext* dbg) override {
IOStatus rv = target()->Write(offset, data, options, dbg);
fs_->counters()->writes.RecordOp(rv, data.size());
return rv;
}
IOStatus Read(uint64_t offset, size_t n, const IOOptions& options,
Slice* result, char* scratch,
IODebugContext* dbg) const override {
IOStatus rv = target()->Read(offset, n, options, result, scratch, dbg);
fs_->counters()->reads.RecordOp(rv, result->size());
return rv;
}
IOStatus Flush(const IOOptions& options, IODebugContext* dbg) override {
IOStatus rv = target()->Flush(options, dbg);
if (rv.ok()) {
fs_->counters()->flushes++;
}
return rv;
}
IOStatus Sync(const IOOptions& options, IODebugContext* dbg) override {
IOStatus rv = target()->Sync(options, dbg);
if (rv.ok()) {
fs_->counters()->syncs++;
}
return rv;
}
IOStatus Fsync(const IOOptions& options, IODebugContext* dbg) override {
IOStatus rv = target()->Fsync(options, dbg);
if (rv.ok()) {
fs_->counters()->fsyncs++;
}
return rv;
}
IOStatus Close(const IOOptions& options, IODebugContext* dbg) override {
IOStatus rv = target()->Close(options, dbg);
if (rv.ok()) {
fs_->counters()->closes++;
}
return rv;
}
};
class CountedDirectory : public FSDirectoryWrapper {
private:
mutable CountedFileSystem* fs_;
bool closed_ = false;
public:
CountedDirectory(std::unique_ptr<FSDirectory>&& f, CountedFileSystem* fs)
: FSDirectoryWrapper(std::move(f)), fs_(fs) {}
IOStatus Fsync(const IOOptions& options, IODebugContext* dbg) override {
IOStatus rv = FSDirectoryWrapper::Fsync(options, dbg);
if (rv.ok()) {
fs_->counters()->dsyncs++;
}
return rv;
}
IOStatus Close(const IOOptions& options, IODebugContext* dbg) override {
IOStatus rv = FSDirectoryWrapper::Close(options, dbg);
if (rv.ok()) {
fs_->counters()->closes++;
fs_->counters()->dir_closes++;
closed_ = true;
}
return rv;
}
IOStatus FsyncWithDirOptions(const IOOptions& options, IODebugContext* dbg,
const DirFsyncOptions& dir_options) override {
IOStatus rv =
FSDirectoryWrapper::FsyncWithDirOptions(options, dbg, dir_options);
if (rv.ok()) {
fs_->counters()->dsyncs++;
}
return rv;
}
~CountedDirectory() {
if (!closed_) {
// TODO: fix DB+CF code to use explicit Close, not rely on destructor
fs_->counters()->closes++;
fs_->counters()->dir_closes++;
}
}
};
} // anonymous namespace
std::string FileOpCounters::PrintCounters() const {
std::stringstream ss;
ss << "Num files opened: " << opens.load(std::memory_order_relaxed)
<< std::endl;
ss << "Num files deleted: " << deletes.load(std::memory_order_relaxed)
<< std::endl;
ss << "Num files renamed: " << renames.load(std::memory_order_relaxed)
<< std::endl;
ss << "Num Flush(): " << flushes.load(std::memory_order_relaxed) << std::endl;
ss << "Num Sync(): " << syncs.load(std::memory_order_relaxed) << std::endl;
ss << "Num Fsync(): " << fsyncs.load(std::memory_order_relaxed) << std::endl;
ss << "Num Dir Fsync(): " << dsyncs.load(std::memory_order_relaxed)
<< std::endl;
ss << "Num Close(): " << closes.load(std::memory_order_relaxed) << std::endl;
ss << "Num Dir Open(): " << dir_opens.load(std::memory_order_relaxed)
<< std::endl;
ss << "Num Dir Close(): " << dir_closes.load(std::memory_order_relaxed)
<< std::endl;
ss << "Num Read(): " << reads.ops.load(std::memory_order_relaxed)
<< std::endl;
ss << "Num Append(): " << writes.ops.load(std::memory_order_relaxed)
<< std::endl;
ss << "Num bytes read: " << reads.bytes.load(std::memory_order_relaxed)
<< std::endl;
ss << "Num bytes written: " << writes.bytes.load(std::memory_order_relaxed)
<< std::endl;
return ss.str();
}
CountedFileSystem::CountedFileSystem(const std::shared_ptr<FileSystem>& base)
: FileSystemWrapper(base) {}
IOStatus CountedFileSystem::NewSequentialFile(
const std::string& f, const FileOptions& options,
std::unique_ptr<FSSequentialFile>* r, IODebugContext* dbg) {
std::unique_ptr<FSSequentialFile> base;
IOStatus s = target()->NewSequentialFile(f, options, &base, dbg);
if (s.ok()) {
counters_.opens++;
r->reset(new CountedSequentialFile(std::move(base), this));
}
return s;
}
IOStatus CountedFileSystem::NewRandomAccessFile(
const std::string& f, const FileOptions& options,
std::unique_ptr<FSRandomAccessFile>* r, IODebugContext* dbg) {
std::unique_ptr<FSRandomAccessFile> base;
IOStatus s = target()->NewRandomAccessFile(f, options, &base, dbg);
if (s.ok()) {
counters_.opens++;
r->reset(new CountedRandomAccessFile(std::move(base), this));
}
return s;
}
IOStatus CountedFileSystem::NewWritableFile(const std::string& f,
const FileOptions& options,
std::unique_ptr<FSWritableFile>* r,
IODebugContext* dbg) {
std::unique_ptr<FSWritableFile> base;
IOStatus s = target()->NewWritableFile(f, options, &base, dbg);
if (s.ok()) {
counters_.opens++;
r->reset(new CountedWritableFile(std::move(base), this));
}
return s;
}
IOStatus CountedFileSystem::ReopenWritableFile(
const std::string& fname, const FileOptions& options,
std::unique_ptr<FSWritableFile>* result, IODebugContext* dbg) {
std::unique_ptr<FSWritableFile> base;
IOStatus s = target()->ReopenWritableFile(fname, options, &base, dbg);
if (s.ok()) {
counters_.opens++;
result->reset(new CountedWritableFile(std::move(base), this));
}
return s;
}
IOStatus CountedFileSystem::ReuseWritableFile(
const std::string& fname, const std::string& old_fname,
const FileOptions& options, std::unique_ptr<FSWritableFile>* result,
IODebugContext* dbg) {
std::unique_ptr<FSWritableFile> base;
IOStatus s =
target()->ReuseWritableFile(fname, old_fname, options, &base, dbg);
if (s.ok()) {
counters_.opens++;
result->reset(new CountedWritableFile(std::move(base), this));
}
return s;
}
IOStatus CountedFileSystem::NewRandomRWFile(
const std::string& name, const FileOptions& options,
std::unique_ptr<FSRandomRWFile>* result, IODebugContext* dbg) {
std::unique_ptr<FSRandomRWFile> base;
IOStatus s = target()->NewRandomRWFile(name, options, &base, dbg);
if (s.ok()) {
counters_.opens++;
result->reset(new CountedRandomRWFile(std::move(base), this));
}
return s;
}
IOStatus CountedFileSystem::NewDirectory(const std::string& name,
const IOOptions& options,
std::unique_ptr<FSDirectory>* result,
IODebugContext* dbg) {
std::unique_ptr<FSDirectory> base;
IOStatus s = target()->NewDirectory(name, options, &base, dbg);
if (s.ok()) {
counters_.opens++;
counters_.dir_opens++;
result->reset(new CountedDirectory(std::move(base), this));
}
return s;
}
} // namespace ROCKSDB_NAMESPACE