ba55d77b5d
Summary: A set of apis that allows an application to backup data from the leveldb database based on a set of files. Test Plan: unint test attached. more coming soon. Reviewers: heyongqiang Reviewed By: heyongqiang Differential Revision: https://reviews.facebook.net/D5439
62 lines
1.5 KiB
C++
62 lines
1.5 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 "db/db_impl.h"
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#include "db/filename.h"
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#include <string>
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#include <stdint.h>
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#include "db/version_set.h"
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#include "leveldb/db.h"
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#include "leveldb/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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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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return Status::OK();
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}
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Status DBImpl::GetLiveFiles(std::vector<std::string>& ret) {
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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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return Status::OK();
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}
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}
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