88db97b06d
Summary: Added DB::GetDbSessionId by using the same format and machinery as DB::GetDbIdentity. The DB Session ID is generated (and therefore, updated) each time a DB object is opened. It is written to the LOG file right after the line of “DB SUMMARY”. A test for the uniqueness, for different openings and during the same opening, is also added. Pull Request resolved: https://github.com/facebook/rocksdb/pull/6959 Test Plan: Passed make check Reviewed By: zhichao-cao Differential Revision: D21951721 Pulled By: gg814 fbshipit-source-id: 958a48a612db49a39998ea703cded45987d3fa8b
127 lines
3.8 KiB
C++
127 lines
3.8 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#include "db/db_info_dumper.h"
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#include <stdio.h>
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#include <algorithm>
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#include <cinttypes>
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#include <string>
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#include <vector>
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#include "file/filename.h"
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#include "rocksdb/env.h"
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namespace ROCKSDB_NAMESPACE {
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void DumpDBFileSummary(const ImmutableDBOptions& options,
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const std::string& dbname,
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const std::string& session_id) {
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if (options.info_log == nullptr) {
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return;
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}
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auto* env = options.env;
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uint64_t number = 0;
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FileType type = kInfoLogFile;
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std::vector<std::string> files;
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uint64_t file_num = 0;
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uint64_t file_size;
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std::string file_info, wal_info;
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Header(options.info_log, "DB SUMMARY\n");
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Header(options.info_log, "DB Session ID: %s\n", session_id.c_str());
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// Get files in dbname dir
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if (!env->GetChildren(dbname, &files).ok()) {
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Error(options.info_log,
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"Error when reading %s dir\n", dbname.c_str());
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}
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std::sort(files.begin(), files.end());
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for (const std::string& file : files) {
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if (!ParseFileName(file, &number, &type)) {
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continue;
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}
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switch (type) {
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case kCurrentFile:
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Header(options.info_log, "CURRENT file: %s\n", file.c_str());
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break;
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case kIdentityFile:
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Header(options.info_log, "IDENTITY file: %s\n", file.c_str());
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break;
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case kDescriptorFile:
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env->GetFileSize(dbname + "/" + file, &file_size);
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Header(options.info_log, "MANIFEST file: %s size: %" PRIu64 " Bytes\n",
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file.c_str(), file_size);
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break;
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case kLogFile:
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env->GetFileSize(dbname + "/" + file, &file_size);
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char str[16];
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snprintf(str, sizeof(str), "%" PRIu64, file_size);
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wal_info.append(file).append(" size: ").
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append(str).append(" ; ");
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break;
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case kTableFile:
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if (++file_num < 10) {
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file_info.append(file).append(" ");
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}
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break;
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default:
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break;
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}
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}
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// Get sst files in db_path dir
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for (auto& db_path : options.db_paths) {
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if (dbname.compare(db_path.path) != 0) {
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if (!env->GetChildren(db_path.path, &files).ok()) {
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Error(options.info_log,
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"Error when reading %s dir\n",
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db_path.path.c_str());
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continue;
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}
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std::sort(files.begin(), files.end());
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for (const std::string& file : files) {
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if (ParseFileName(file, &number, &type)) {
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if (type == kTableFile && ++file_num < 10) {
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file_info.append(file).append(" ");
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}
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}
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}
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}
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Header(options.info_log,
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"SST files in %s dir, Total Num: %" PRIu64 ", files: %s\n",
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db_path.path.c_str(), file_num, file_info.c_str());
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file_num = 0;
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file_info.clear();
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}
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// Get wal file in wal_dir
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if (dbname.compare(options.wal_dir) != 0) {
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if (!env->GetChildren(options.wal_dir, &files).ok()) {
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Error(options.info_log,
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"Error when reading %s dir\n",
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options.wal_dir.c_str());
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return;
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}
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wal_info.clear();
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for (const std::string& file : files) {
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if (ParseFileName(file, &number, &type)) {
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if (type == kLogFile) {
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env->GetFileSize(options.wal_dir + "/" + file, &file_size);
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char str[16];
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snprintf(str, sizeof(str), "%" PRIu64, file_size);
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wal_info.append(file).append(" size: ").
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append(str).append(" ; ");
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}
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}
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}
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}
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Header(options.info_log, "Write Ahead Log file in %s: %s\n",
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options.wal_dir.c_str(), wal_info.c_str());
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}
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} // namespace ROCKSDB_NAMESPACE
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