blob: b7ae8162d44f4e740c320f8ee3903952417047ad [file] [log] [blame]
// 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).
#ifndef ROCKSDB_LITE
#ifndef __STDC_FORMAT_MACROS
#define __STDC_FORMAT_MACROS
#endif
#include "utilities/blob_db/blob_dump_tool.h"
#include <inttypes.h>
#include <stdio.h>
#include <iostream>
#include <memory>
#include <string>
#include "port/port.h"
#include "rocksdb/convenience.h"
#include "rocksdb/env.h"
#include "util/coding.h"
#include "util/string_util.h"
namespace rocksdb {
namespace blob_db {
BlobDumpTool::BlobDumpTool()
: reader_(nullptr), buffer_(nullptr), buffer_size_(0) {}
Status BlobDumpTool::Run(const std::string& filename, DisplayType show_key,
DisplayType show_blob) {
Status s;
Env* env = Env::Default();
s = env->FileExists(filename);
if (!s.ok()) {
return s;
}
uint64_t file_size = 0;
s = env->GetFileSize(filename, &file_size);
if (!s.ok()) {
return s;
}
std::unique_ptr<RandomAccessFile> file;
s = env->NewRandomAccessFile(filename, &file, EnvOptions());
if (!s.ok()) {
return s;
}
if (file_size == 0) {
return Status::Corruption("File is empty.");
}
reader_.reset(new RandomAccessFileReader(std::move(file), filename));
uint64_t offset = 0;
uint64_t footer_offset = 0;
s = DumpBlobLogHeader(&offset);
if (!s.ok()) {
return s;
}
s = DumpBlobLogFooter(file_size, &footer_offset);
if (!s.ok()) {
return s;
}
if (show_key != DisplayType::kNone) {
while (offset < footer_offset) {
s = DumpRecord(show_key, show_blob, &offset);
if (!s.ok()) {
return s;
}
}
}
return s;
}
Status BlobDumpTool::Read(uint64_t offset, size_t size, Slice* result) {
if (buffer_size_ < size) {
if (buffer_size_ == 0) {
buffer_size_ = 4096;
}
while (buffer_size_ < size) {
buffer_size_ *= 2;
}
buffer_.reset(new char[buffer_size_]);
}
Status s = reader_->Read(offset, size, result, buffer_.get());
if (!s.ok()) {
return s;
}
if (result->size() != size) {
return Status::Corruption("Reach the end of the file unexpectedly.");
}
return s;
}
Status BlobDumpTool::DumpBlobLogHeader(uint64_t* offset) {
Slice slice;
Status s = Read(0, BlobLogHeader::kSize, &slice);
if (!s.ok()) {
return s;
}
BlobLogHeader header;
s = header.DecodeFrom(slice);
if (!s.ok()) {
return s;
}
fprintf(stdout, "Blob log header:\n");
fprintf(stdout, " Version : %" PRIu32 "\n", header.version);
fprintf(stdout, " Column Family ID : %" PRIu32 "\n",
header.column_family_id);
std::string compression_str;
if (!GetStringFromCompressionType(&compression_str, header.compression)
.ok()) {
compression_str = "Unrecongnized compression type (" +
ToString((int)header.compression) + ")";
}
fprintf(stdout, " Compression : %s\n", compression_str.c_str());
fprintf(stdout, " Expiration range : %s\n",
GetString(header.expiration_range).c_str());
*offset = BlobLogHeader::kSize;
return s;
}
Status BlobDumpTool::DumpBlobLogFooter(uint64_t file_size,
uint64_t* footer_offset) {
auto no_footer = [&]() {
*footer_offset = file_size;
fprintf(stdout, "No blob log footer.\n");
return Status::OK();
};
if (file_size < BlobLogHeader::kSize + BlobLogFooter::kSize) {
return no_footer();
}
Slice slice;
*footer_offset = file_size - BlobLogFooter::kSize;
Status s = Read(*footer_offset, BlobLogFooter::kSize, &slice);
if (!s.ok()) {
return s;
}
BlobLogFooter footer;
s = footer.DecodeFrom(slice);
if (!s.ok()) {
return s;
}
fprintf(stdout, "Blob log footer:\n");
fprintf(stdout, " Blob count : %" PRIu64 "\n", footer.blob_count);
fprintf(stdout, " Expiration Range : %s\n",
GetString(footer.expiration_range).c_str());
fprintf(stdout, " Sequence Range : %s\n",
GetString(footer.sequence_range).c_str());
return s;
}
Status BlobDumpTool::DumpRecord(DisplayType show_key, DisplayType show_blob,
uint64_t* offset) {
fprintf(stdout, "Read record with offset 0x%" PRIx64 " (%" PRIu64 "):\n",
*offset, *offset);
Slice slice;
Status s = Read(*offset, BlobLogRecord::kHeaderSize, &slice);
if (!s.ok()) {
return s;
}
BlobLogRecord record;
s = record.DecodeHeaderFrom(slice);
if (!s.ok()) {
return s;
}
uint64_t key_size = record.key_size;
uint64_t value_size = record.value_size;
fprintf(stdout, " key size : %" PRIu64 "\n", key_size);
fprintf(stdout, " value size : %" PRIu64 "\n", value_size);
fprintf(stdout, " expiration : %" PRIu64 "\n", record.expiration);
*offset += BlobLogRecord::kHeaderSize;
s = Read(*offset, key_size + value_size, &slice);
if (!s.ok()) {
return s;
}
if (show_key != DisplayType::kNone) {
fprintf(stdout, " key : ");
DumpSlice(Slice(slice.data(), key_size), show_key);
if (show_blob != DisplayType::kNone) {
fprintf(stdout, " blob : ");
DumpSlice(Slice(slice.data() + key_size, value_size), show_blob);
}
}
*offset += key_size + value_size;
return s;
}
void BlobDumpTool::DumpSlice(const Slice s, DisplayType type) {
if (type == DisplayType::kRaw) {
fprintf(stdout, "%s\n", s.ToString().c_str());
} else if (type == DisplayType::kHex) {
fprintf(stdout, "%s\n", s.ToString(true /*hex*/).c_str());
} else if (type == DisplayType::kDetail) {
char buf[100];
for (size_t i = 0; i < s.size(); i += 16) {
memset(buf, 0, sizeof(buf));
for (size_t j = 0; j < 16 && i + j < s.size(); j++) {
unsigned char c = s[i + j];
snprintf(buf + j * 3 + 15, 2, "%x", c >> 4);
snprintf(buf + j * 3 + 16, 2, "%x", c & 0xf);
snprintf(buf + j + 65, 2, "%c", (0x20 <= c && c <= 0x7e) ? c : '.');
}
for (size_t p = 0; p < sizeof(buf) - 1; p++) {
if (buf[p] == 0) {
buf[p] = ' ';
}
}
fprintf(stdout, "%s\n", i == 0 ? buf + 15 : buf);
}
}
}
template <class T>
std::string BlobDumpTool::GetString(std::pair<T, T> p) {
if (p.first == 0 && p.second == 0) {
return "nil";
}
return "(" + ToString(p.first) + ", " + ToString(p.second) + ")";
}
} // namespace blob_db
} // namespace rocksdb
#endif // ROCKSDB_LITE