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// Copyright (C) 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "icing/legacy/index/icing-storage-file.h"
#include <inttypes.h>
#include <unistd.h>
#include <string>
#include "icing/legacy/core/icing-compat.h"
#include "icing/legacy/core/icing-string-util.h"
#include "icing/legacy/core/icing-timer.h"
#include "icing/util/logging.h"
namespace icing {
namespace lib {
IcingStorageFile::IcingStorageFile(const std::string &filename,
const IcingFilesystem *filesystem)
: IIcingStorage(), filesystem_(filesystem), filename_(filename) {}
bool IcingStorageFile::Init() {
if (!is_initialized_) {
// Ensure the storage directory exists
std::string storage_dir = filesystem_->GetDirname(filename_.c_str());
if (!filesystem_->CreateDirectoryRecursively(storage_dir.c_str())) {
return false;
}
is_initialized_ = OnInit();
if (is_initialized_ && fd_.get() < 0) { // if initalized, fd better be set
ICING_LOG(FATAL)
<< "Storage file descriptor not set after initialization";
}
}
return is_initialized_;
}
void IcingStorageFile::Close() {
if (is_initialized_) {
OnClose();
fd_.reset();
is_initialized_ = false;
}
}
bool IcingStorageFile::Remove() {
Close();
return filesystem_->DeleteFile(filename_.c_str());
}
bool IcingStorageFile::Sync() {
if (!is_initialized_) {
ICING_LOG(FATAL) << "Storage file not initialized";
}
IcingTimer timer;
if (!PreSync()) {
ICING_LOG(ERROR) << IcingStringUtil::StringPrintf("Pre-sync %s failed",
filename_.c_str());
return false;
}
if (!filesystem_->DataSync(fd_.get())) {
ICING_LOG(ERROR) << IcingStringUtil::StringPrintf("Sync %s failed",
filename_.c_str());
return false;
}
if (!PostSync()) {
ICING_LOG(ERROR) << IcingStringUtil::StringPrintf("Post-sync %s failed",
filename_.c_str());
return false;
}
ICING_VLOG(1) << IcingStringUtil::StringPrintf(
"Syncing %s took %.3fms", filename_.c_str(), timer.Elapsed() * 1000.);
return true;
}
uint64_t IcingStorageFile::GetDiskUsage() const {
return filesystem_->GetDiskUsage(fd_.get());
}
bool IcingStorageFile::PreSync() {
// Default implementation is a no-op.
return true;
}
bool IcingStorageFile::PostSync() {
// Default implementation is a no-op.
return true;
}
void IcingStorageFile::GetDebugInfo(int verbosity, std::string *out) const {
if (!is_initialized_) {
ICING_LOG(FATAL) << "Storage file not initialized";
}
if (verbosity >= 0) { // Always
uint64_t size = filesystem_->GetFileSize(fd_.get());
IcingStringUtil::SStringAppendF(
out, 1000, "Filename: %s Size: %" PRIu64 "\n", filename_.c_str(), size);
}
}
} // namespace lib
} // namespace icing
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