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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
#include "db/db_info_dumper.h"
#include <algorithm>
#include <cinttypes>
#include <cstdio>
#include <string>
#include <vector>
#include "file/filename.h"
#include "rocksdb/env.h"
namespace ROCKSDB_NAMESPACE {
void DumpDBFileSummary(const ImmutableDBOptions& options,
const std::string& dbname,
const std::string& session_id) {
if (options.info_log == nullptr) {
return;
}
auto* env = options.env;
uint64_t number = 0;
FileType type = kInfoLogFile;
std::vector<std::string> files;
uint64_t file_num = 0;
uint64_t file_size;
std::string file_info, wal_info;
Header(options.info_log, "DB SUMMARY\n");
{
std::string hostname;
if (env->GetHostNameString(&hostname).ok()) {
Header(options.info_log, "Host name (Env): %s\n", hostname.c_str());
}
}
Header(options.info_log, "DB Session ID: %s\n", session_id.c_str());
Status s;
// Get files in dbname dir
s = env->GetChildren(dbname, &files);
if (!s.ok()) {
Error(options.info_log, "Error when reading %s dir %s\n", dbname.c_str(),
s.ToString().c_str());
}
std::sort(files.begin(), files.end());
for (const std::string& file : files) {
if (!ParseFileName(file, &number, &type)) {
continue;
}
switch (type) {
case kCurrentFile:
Header(options.info_log, "CURRENT file: %s\n", file.c_str());
break;
case kIdentityFile:
Header(options.info_log, "IDENTITY file: %s\n", file.c_str());
break;
case kDescriptorFile:
s = env->GetFileSize(dbname + "/" + file, &file_size);
if (s.ok()) {
Header(options.info_log,
"MANIFEST file: %s size: %" PRIu64 " Bytes\n", file.c_str(),
file_size);
} else {
Error(options.info_log,
"Error when reading MANIFEST file: %s/%s %s\n", dbname.c_str(),
file.c_str(), s.ToString().c_str());
}
break;
case kWalFile:
s = env->GetFileSize(dbname + "/" + file, &file_size);
if (s.ok()) {
wal_info.append(file)
.append(" size: ")
.append(std::to_string(file_size))
.append(" ; ");
} else {
Error(options.info_log, "Error when reading LOG file: %s/%s %s\n",
dbname.c_str(), file.c_str(), s.ToString().c_str());
}
break;
case kTableFile:
if (++file_num < 10) {
file_info.append(file).append(" ");
}
break;
default:
break;
}
}
// Get sst files in db_path dir
for (auto& db_path : options.db_paths) {
if (dbname.compare(db_path.path) != 0) {
s = env->GetChildren(db_path.path, &files);
if (s.IsNotFound() || s.IsPathNotFound()) {
Header(options.info_log,
"Directory from db_paths/cf_paths does not yet exist: %s\n",
db_path.path.c_str());
continue;
} else if (!s.ok()) {
Error(options.info_log, "Error when reading %s dir %s\n",
db_path.path.c_str(), s.ToString().c_str());
continue;
}
std::sort(files.begin(), files.end());
for (const std::string& file : files) {
if (ParseFileName(file, &number, &type)) {
if (type == kTableFile && ++file_num < 10) {
file_info.append(file).append(" ");
}
}
}
}
Header(options.info_log,
"SST files in %s dir, Total Num: %" PRIu64 ", files: %s\n",
db_path.path.c_str(), file_num, file_info.c_str());
file_num = 0;
file_info.clear();
}
// Get wal file in wal_dir
const auto& wal_dir = options.GetWalDir(dbname);
bool log_wal_info = true;
if (!options.IsWalDirSameAsDBPath(dbname)) {
s = env->GetChildren(wal_dir, &files);
if (s.IsNotFound() || s.IsPathNotFound()) {
Header(options.info_log,
"Write Ahead Log directory does not yet exist: %s\n",
wal_dir.c_str());
log_wal_info = false;
} else if (!s.ok()) {
Error(options.info_log, "Error when reading wal dir %s: %s\n",
wal_dir.c_str(), s.ToString().c_str());
log_wal_info = false;
}
wal_info.clear();
for (const std::string& file : files) {
if (ParseFileName(file, &number, &type)) {
if (type == kWalFile) {
s = env->GetFileSize(wal_dir + "/" + file, &file_size);
if (s.ok()) {
wal_info.append(file)
.append(" size: ")
.append(std::to_string(file_size))
.append(" ; ");
} else {
Error(options.info_log, "Error when reading LOG file %s/%s %s\n",
wal_dir.c_str(), file.c_str(), s.ToString().c_str());
}
}
}
}
}
if (log_wal_info) {
Header(options.info_log, "Write Ahead Log file in %s: %s\n",
wal_dir.c_str(), wal_info.c_str());
}
}
} // namespace ROCKSDB_NAMESPACE
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