a143ef9b38
Summary: Change namespace from leveldb to rocksdb. This allows a single application to link in open-source leveldb code as well as rocksdb code into the same process. Test Plan: compile rocksdb Reviewers: emayanke Reviewed By: emayanke CC: leveldb Differential Revision: https://reviews.facebook.net/D13287
115 lines
3.2 KiB
C++
115 lines
3.2 KiB
C++
// Copyright (c) 2012 Facebook.
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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.
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#include <algorithm>
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#include <string>
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#include <stdint.h>
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#include "db/db_impl.h"
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#include "db/filename.h"
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#include "db/version_set.h"
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#include "rocksdb/db.h"
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#include "rocksdb/env.h"
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#include "port/port.h"
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#include "util/mutexlock.h"
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namespace rocksdb {
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Status DBImpl::DisableFileDeletions() {
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MutexLock l(&mutex_);
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disable_delete_obsolete_files_ = true;
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Log(options_.info_log, "File Deletions Disabled");
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return Status::OK();
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}
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Status DBImpl::EnableFileDeletions() {
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MutexLock l(&mutex_);
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disable_delete_obsolete_files_ = false;
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Log(options_.info_log, "File Deletions Enabled");
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return Status::OK();
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}
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Status DBImpl::GetLiveFiles(std::vector<std::string>& ret,
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uint64_t* manifest_file_size,
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bool flush_memtable) {
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*manifest_file_size = 0;
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if (flush_memtable) {
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// flush all dirty data to disk.
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Status status = Flush(FlushOptions());
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if (!status.ok()) {
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Log(options_.info_log, "Cannot Flush data %s\n",
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status.ToString().c_str());
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return status;
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}
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}
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MutexLock l(&mutex_);
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// Make a set of all of the live *.sst files
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std::set<uint64_t> live;
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versions_->AddLiveFilesCurrentVersion(&live);
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ret.clear();
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ret.reserve(live.size() + 2); //*.sst + CURRENT + MANIFEST
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// create names of the live files. The names are not absolute
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// paths, instead they are relative to dbname_;
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for (auto live_file : live) {
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ret.push_back(TableFileName("", live_file));
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}
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ret.push_back(CurrentFileName(""));
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ret.push_back(DescriptorFileName("", versions_->ManifestFileNumber()));
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// find length of manifest file while holding the mutex lock
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*manifest_file_size = versions_->ManifestFileSize();
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return Status::OK();
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}
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Status DBImpl::GetSortedWalFiles(VectorLogPtr& files) {
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// First get sorted files in archive dir, then append sorted files from main
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// dir to maintain sorted order
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// list wal files in archive dir.
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Status s;
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std::string archivedir = ArchivalDirectory(dbname_);
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if (env_->FileExists(archivedir)) {
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s = AppendSortedWalsOfType(archivedir, files, kArchivedLogFile);
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if (!s.ok()) {
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return s;
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}
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}
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// list wal files in main db dir.
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return AppendSortedWalsOfType(dbname_, files, kAliveLogFile);
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}
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Status DBImpl::DeleteWalFiles(const VectorLogPtr& files) {
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Status s;
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std::string archivedir = ArchivalDirectory(dbname_);
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std::string files_not_deleted;
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for (const auto& wal : files) {
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/* Try deleting in the dir that pathname points to for the logfile.
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This may fail if we try to delete a log file which was live when captured
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but is archived now. Try deleting it from archive also
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*/
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Status st = env_->DeleteFile(dbname_ + "/" + wal->PathName());
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if (!st.ok()) {
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if (wal->Type() == kAliveLogFile &&
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env_->DeleteFile(LogFileName(archivedir, wal->LogNumber())).ok()) {
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continue;
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}
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files_not_deleted.append(wal->PathName());
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}
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}
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if (!files_not_deleted.empty()) {
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return Status::IOError("Deleted all requested files except: " +
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files_not_deleted);
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}
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return Status::OK();
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}
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}
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