fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
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114 lines
3.3 KiB
114 lines
3.3 KiB
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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//
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// 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_;
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if (disable_delete_obsolete_files_ == 1) {
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// if not, it has already been disabled, so don't log anything
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Log(options_.info_log, "File Deletions Disabled");
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}
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return Status::OK();
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}
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Status DBImpl::EnableFileDeletions(bool force) {
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DeletionState deletion_state;
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bool should_purge_files = false;
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{
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MutexLock l(&mutex_);
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if (force) {
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// if force, we need to enable file deletions right away
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disable_delete_obsolete_files_ = 0;
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} else if (disable_delete_obsolete_files_ > 0) {
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--disable_delete_obsolete_files_;
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}
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if (disable_delete_obsolete_files_ == 0) {
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Log(options_.info_log, "File Deletions Enabled");
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should_purge_files = true;
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FindObsoleteFiles(deletion_state, true);
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}
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}
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if (should_purge_files) {
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PurgeObsoleteFiles(deletion_state);
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}
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LogFlush(options_.info_log);
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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(options_.wal_dir);
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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(options_.wal_dir, files, kAliveLogFile);
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}
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}
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