fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
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113 lines
3.2 KiB
113 lines
3.2 KiB
// 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 leveldb {
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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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*manifest_file_size = 0;
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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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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.resize(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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std::set<uint64_t>::iterator it = live.begin();
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for (unsigned int i = 0; i < live.size(); i++, it++) {
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ret[i] = TableFileName("", *it);
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}
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ret[live.size()] = CurrentFileName("");
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ret[live.size()+1] = DescriptorFileName("",
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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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s = AppendSortedWalsOfType(dbname_, files, kAliveLogFile);
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if (!s.ok()) {
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return s;
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}
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return s;
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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 archive dir. If fails, try deleting in main db dir.
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* This is efficient because all except for very few wal files will be in
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* archive. Checking for WalType is not much helpful because alive wal could
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be archived now.
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*/
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if (!env_->DeleteFile(archivedir + "/" + wal->Filename()).ok() &&
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!env_->DeleteFile(dbname_ + "/" + wal->Filename()).ok()) {
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files_not_deleted.append(wal->Filename());
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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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