fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
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587 lines
19 KiB
587 lines
19 KiB
// 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 "trace_replay/trace_replay.h"
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#include <chrono>
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#include <sstream>
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#include <thread>
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#include "db/db_impl/db_impl.h"
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#include "rocksdb/env.h"
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#include "rocksdb/iterator.h"
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#include "rocksdb/options.h"
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#include "rocksdb/slice.h"
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#include "rocksdb/system_clock.h"
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#include "rocksdb/trace_reader_writer.h"
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#include "rocksdb/write_batch.h"
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#include "util/coding.h"
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#include "util/string_util.h"
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namespace ROCKSDB_NAMESPACE {
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const std::string kTraceMagic = "feedcafedeadbeef";
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namespace {
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void DecodeCFAndKey(std::string& buffer, uint32_t* cf_id, Slice* key) {
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Slice buf(buffer);
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GetFixed32(&buf, cf_id);
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GetLengthPrefixedSlice(&buf, key);
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}
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} // namespace
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Status TracerHelper::ParseVersionStr(std::string& v_string, int* v_num) {
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if (v_string.find_first_of('.') == std::string::npos ||
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v_string.find_first_of('.') != v_string.find_last_of('.')) {
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return Status::Corruption(
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"Corrupted trace file. Incorrect version format.");
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}
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int tmp_num = 0;
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for (int i = 0; i < static_cast<int>(v_string.size()); i++) {
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if (v_string[i] == '.') {
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continue;
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} else if (isdigit(v_string[i])) {
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tmp_num = tmp_num * 10 + (v_string[i] - '0');
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} else {
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return Status::Corruption(
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"Corrupted trace file. Incorrect version format");
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}
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}
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*v_num = tmp_num;
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return Status::OK();
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}
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Status TracerHelper::ParseTraceHeader(const Trace& header, int* trace_version,
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int* db_version) {
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std::vector<std::string> s_vec;
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int begin = 0, end;
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for (int i = 0; i < 3; i++) {
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assert(header.payload.find("\t", begin) != std::string::npos);
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end = static_cast<int>(header.payload.find("\t", begin));
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s_vec.push_back(header.payload.substr(begin, end - begin));
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begin = end + 1;
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}
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std::string t_v_str, db_v_str;
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assert(s_vec.size() == 3);
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assert(s_vec[1].find("Trace Version: ") != std::string::npos);
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t_v_str = s_vec[1].substr(15);
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assert(s_vec[2].find("RocksDB Version: ") != std::string::npos);
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db_v_str = s_vec[2].substr(17);
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Status s;
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s = ParseVersionStr(t_v_str, trace_version);
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if (s != Status::OK()) {
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return s;
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}
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s = ParseVersionStr(db_v_str, db_version);
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return s;
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}
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void TracerHelper::EncodeTrace(const Trace& trace, std::string* encoded_trace) {
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assert(encoded_trace);
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PutFixed64(encoded_trace, trace.ts);
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encoded_trace->push_back(trace.type);
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PutFixed32(encoded_trace, static_cast<uint32_t>(trace.payload.size()));
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encoded_trace->append(trace.payload);
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}
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Status TracerHelper::DecodeTrace(const std::string& encoded_trace,
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Trace* trace) {
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assert(trace != nullptr);
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Slice enc_slice = Slice(encoded_trace);
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if (!GetFixed64(&enc_slice, &trace->ts)) {
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return Status::Incomplete("Decode trace string failed");
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}
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if (enc_slice.size() < kTraceTypeSize + kTracePayloadLengthSize) {
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return Status::Incomplete("Decode trace string failed");
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}
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trace->type = static_cast<TraceType>(enc_slice[0]);
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enc_slice.remove_prefix(kTraceTypeSize + kTracePayloadLengthSize);
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trace->payload = enc_slice.ToString();
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return Status::OK();
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}
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Status TracerHelper::DecodeHeader(const std::string& encoded_trace,
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Trace* header) {
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Status s = TracerHelper::DecodeTrace(encoded_trace, header);
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if (header->type != kTraceBegin) {
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return Status::Corruption("Corrupted trace file. Incorrect header.");
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}
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if (header->payload.substr(0, kTraceMagic.length()) != kTraceMagic) {
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return Status::Corruption("Corrupted trace file. Incorrect magic.");
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}
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return s;
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}
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bool TracerHelper::SetPayloadMap(uint64_t& payload_map,
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const TracePayloadType payload_type) {
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uint64_t old_state = payload_map;
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uint64_t tmp = 1;
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payload_map |= (tmp << payload_type);
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return old_state != payload_map;
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}
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Status TracerHelper::DecodeTraceRecord(Trace* trace, int trace_file_version,
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std::unique_ptr<TraceRecord>* record) {
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assert(trace != nullptr);
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if (record != nullptr) {
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record->reset(nullptr);
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}
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switch (trace->type) {
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// Write
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case kTraceWrite: {
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PinnableSlice rep;
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if (trace_file_version < 2) {
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rep.PinSelf(trace->payload);
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} else {
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Slice buf(trace->payload);
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GetFixed64(&buf, &trace->payload_map);
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int64_t payload_map = static_cast<int64_t>(trace->payload_map);
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Slice write_batch_data;
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while (payload_map) {
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// Find the rightmost set bit.
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uint32_t set_pos =
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static_cast<uint32_t>(log2(payload_map & -payload_map));
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switch (set_pos) {
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case TracePayloadType::kWriteBatchData: {
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GetLengthPrefixedSlice(&buf, &write_batch_data);
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break;
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}
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default: {
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assert(false);
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}
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}
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// unset the rightmost bit.
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payload_map &= (payload_map - 1);
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}
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rep.PinSelf(write_batch_data);
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}
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if (record != nullptr) {
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record->reset(new WriteQueryTraceRecord(std::move(rep), trace->ts));
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}
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return Status::OK();
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}
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// Get
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case kTraceGet: {
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uint32_t cf_id = 0;
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Slice get_key;
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if (trace_file_version < 2) {
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DecodeCFAndKey(trace->payload, &cf_id, &get_key);
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} else {
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Slice buf(trace->payload);
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GetFixed64(&buf, &trace->payload_map);
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int64_t payload_map = static_cast<int64_t>(trace->payload_map);
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while (payload_map) {
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// Find the rightmost set bit.
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uint32_t set_pos =
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static_cast<uint32_t>(log2(payload_map & -payload_map));
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switch (set_pos) {
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case TracePayloadType::kGetCFID: {
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GetFixed32(&buf, &cf_id);
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break;
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}
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case TracePayloadType::kGetKey: {
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GetLengthPrefixedSlice(&buf, &get_key);
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break;
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}
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default: {
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assert(false);
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}
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}
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// unset the rightmost bit.
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payload_map &= (payload_map - 1);
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}
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}
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if (record != nullptr) {
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PinnableSlice ps;
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ps.PinSelf(get_key);
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record->reset(new GetQueryTraceRecord(cf_id, std::move(ps), trace->ts));
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}
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return Status::OK();
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}
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// Iterator Seek and SeekForPrev
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case kTraceIteratorSeek:
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case kTraceIteratorSeekForPrev: {
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uint32_t cf_id = 0;
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Slice iter_key;
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Slice lower_bound;
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Slice upper_bound;
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if (trace_file_version < 2) {
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DecodeCFAndKey(trace->payload, &cf_id, &iter_key);
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} else {
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Slice buf(trace->payload);
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GetFixed64(&buf, &trace->payload_map);
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int64_t payload_map = static_cast<int64_t>(trace->payload_map);
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while (payload_map) {
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// Find the rightmost set bit.
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uint32_t set_pos =
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static_cast<uint32_t>(log2(payload_map & -payload_map));
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switch (set_pos) {
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case TracePayloadType::kIterCFID: {
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GetFixed32(&buf, &cf_id);
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break;
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}
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case TracePayloadType::kIterKey: {
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GetLengthPrefixedSlice(&buf, &iter_key);
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break;
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}
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case TracePayloadType::kIterLowerBound: {
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GetLengthPrefixedSlice(&buf, &lower_bound);
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break;
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}
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case TracePayloadType::kIterUpperBound: {
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GetLengthPrefixedSlice(&buf, &upper_bound);
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break;
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}
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default: {
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assert(false);
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}
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}
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// unset the rightmost bit.
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payload_map &= (payload_map - 1);
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}
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}
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if (record != nullptr) {
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PinnableSlice ps_key;
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ps_key.PinSelf(iter_key);
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PinnableSlice ps_lower;
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ps_lower.PinSelf(lower_bound);
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PinnableSlice ps_upper;
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ps_upper.PinSelf(upper_bound);
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record->reset(new IteratorSeekQueryTraceRecord(
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static_cast<IteratorSeekQueryTraceRecord::SeekType>(trace->type),
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cf_id, std::move(ps_key), std::move(ps_lower), std::move(ps_upper),
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trace->ts));
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}
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return Status::OK();
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}
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// MultiGet
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case kTraceMultiGet: {
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if (trace_file_version < 2) {
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return Status::Corruption("MultiGet is not supported.");
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}
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uint32_t multiget_size = 0;
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std::vector<uint32_t> cf_ids;
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std::vector<PinnableSlice> multiget_keys;
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Slice cfids_payload;
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Slice keys_payload;
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Slice buf(trace->payload);
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GetFixed64(&buf, &trace->payload_map);
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int64_t payload_map = static_cast<int64_t>(trace->payload_map);
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while (payload_map) {
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// Find the rightmost set bit.
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uint32_t set_pos =
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static_cast<uint32_t>(log2(payload_map & -payload_map));
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switch (set_pos) {
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case TracePayloadType::kMultiGetSize: {
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GetFixed32(&buf, &multiget_size);
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break;
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}
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case TracePayloadType::kMultiGetCFIDs: {
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GetLengthPrefixedSlice(&buf, &cfids_payload);
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break;
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}
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case TracePayloadType::kMultiGetKeys: {
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GetLengthPrefixedSlice(&buf, &keys_payload);
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break;
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}
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default: {
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assert(false);
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}
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}
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// unset the rightmost bit.
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payload_map &= (payload_map - 1);
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}
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if (multiget_size == 0) {
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return Status::InvalidArgument("Empty MultiGet cf_ids or keys.");
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}
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// Decode the cfids_payload and keys_payload
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cf_ids.reserve(multiget_size);
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multiget_keys.reserve(multiget_size);
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for (uint32_t i = 0; i < multiget_size; i++) {
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uint32_t tmp_cfid;
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Slice tmp_key;
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GetFixed32(&cfids_payload, &tmp_cfid);
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GetLengthPrefixedSlice(&keys_payload, &tmp_key);
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cf_ids.push_back(tmp_cfid);
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Slice s(tmp_key);
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PinnableSlice ps;
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ps.PinSelf(s);
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multiget_keys.push_back(std::move(ps));
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}
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if (record != nullptr) {
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record->reset(new MultiGetQueryTraceRecord(
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std::move(cf_ids), std::move(multiget_keys), trace->ts));
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}
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return Status::OK();
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}
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default:
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return Status::NotSupported("Unsupported trace type.");
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}
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}
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Tracer::Tracer(SystemClock* clock, const TraceOptions& trace_options,
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std::unique_ptr<TraceWriter>&& trace_writer)
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: clock_(clock),
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trace_options_(trace_options),
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trace_writer_(std::move(trace_writer)),
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trace_request_count_(0) {
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// TODO: What if this fails?
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WriteHeader().PermitUncheckedError();
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}
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Tracer::~Tracer() { trace_writer_.reset(); }
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Status Tracer::Write(WriteBatch* write_batch) {
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TraceType trace_type = kTraceWrite;
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if (ShouldSkipTrace(trace_type)) {
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return Status::OK();
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}
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Trace trace;
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trace.ts = clock_->NowMicros();
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trace.type = trace_type;
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TracerHelper::SetPayloadMap(trace.payload_map,
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TracePayloadType::kWriteBatchData);
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PutFixed64(&trace.payload, trace.payload_map);
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PutLengthPrefixedSlice(&trace.payload, Slice(write_batch->Data()));
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return WriteTrace(trace);
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}
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Status Tracer::Get(ColumnFamilyHandle* column_family, const Slice& key) {
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TraceType trace_type = kTraceGet;
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if (ShouldSkipTrace(trace_type)) {
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return Status::OK();
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}
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Trace trace;
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trace.ts = clock_->NowMicros();
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trace.type = trace_type;
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// Set the payloadmap of the struct member that will be encoded in the
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// payload.
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TracerHelper::SetPayloadMap(trace.payload_map, TracePayloadType::kGetCFID);
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TracerHelper::SetPayloadMap(trace.payload_map, TracePayloadType::kGetKey);
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// Encode the Get struct members into payload. Make sure add them in order.
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PutFixed64(&trace.payload, trace.payload_map);
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PutFixed32(&trace.payload, column_family->GetID());
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PutLengthPrefixedSlice(&trace.payload, key);
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return WriteTrace(trace);
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}
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Status Tracer::IteratorSeek(const uint32_t& cf_id, const Slice& key,
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const Slice& lower_bound, const Slice upper_bound) {
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TraceType trace_type = kTraceIteratorSeek;
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if (ShouldSkipTrace(trace_type)) {
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return Status::OK();
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}
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Trace trace;
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trace.ts = clock_->NowMicros();
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trace.type = trace_type;
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// Set the payloadmap of the struct member that will be encoded in the
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// payload.
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TracerHelper::SetPayloadMap(trace.payload_map, TracePayloadType::kIterCFID);
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TracerHelper::SetPayloadMap(trace.payload_map, TracePayloadType::kIterKey);
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if (lower_bound.size() > 0) {
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TracerHelper::SetPayloadMap(trace.payload_map,
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TracePayloadType::kIterLowerBound);
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}
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if (upper_bound.size() > 0) {
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TracerHelper::SetPayloadMap(trace.payload_map,
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TracePayloadType::kIterUpperBound);
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}
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// Encode the Iterator struct members into payload. Make sure add them in
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// order.
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PutFixed64(&trace.payload, trace.payload_map);
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PutFixed32(&trace.payload, cf_id);
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PutLengthPrefixedSlice(&trace.payload, key);
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if (lower_bound.size() > 0) {
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PutLengthPrefixedSlice(&trace.payload, lower_bound);
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}
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if (upper_bound.size() > 0) {
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PutLengthPrefixedSlice(&trace.payload, upper_bound);
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}
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return WriteTrace(trace);
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}
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Status Tracer::IteratorSeekForPrev(const uint32_t& cf_id, const Slice& key,
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const Slice& lower_bound,
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const Slice upper_bound) {
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TraceType trace_type = kTraceIteratorSeekForPrev;
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if (ShouldSkipTrace(trace_type)) {
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return Status::OK();
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}
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Trace trace;
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trace.ts = clock_->NowMicros();
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trace.type = trace_type;
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// Set the payloadmap of the struct member that will be encoded in the
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// payload.
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TracerHelper::SetPayloadMap(trace.payload_map, TracePayloadType::kIterCFID);
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TracerHelper::SetPayloadMap(trace.payload_map, TracePayloadType::kIterKey);
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if (lower_bound.size() > 0) {
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TracerHelper::SetPayloadMap(trace.payload_map,
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TracePayloadType::kIterLowerBound);
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}
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if (upper_bound.size() > 0) {
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TracerHelper::SetPayloadMap(trace.payload_map,
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TracePayloadType::kIterUpperBound);
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}
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// Encode the Iterator struct members into payload. Make sure add them in
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// order.
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PutFixed64(&trace.payload, trace.payload_map);
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PutFixed32(&trace.payload, cf_id);
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PutLengthPrefixedSlice(&trace.payload, key);
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if (lower_bound.size() > 0) {
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PutLengthPrefixedSlice(&trace.payload, lower_bound);
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}
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if (upper_bound.size() > 0) {
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PutLengthPrefixedSlice(&trace.payload, upper_bound);
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}
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return WriteTrace(trace);
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}
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Status Tracer::MultiGet(const size_t num_keys,
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ColumnFamilyHandle** column_families,
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const Slice* keys) {
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if (num_keys == 0) {
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return Status::OK();
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}
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std::vector<ColumnFamilyHandle*> v_column_families;
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std::vector<Slice> v_keys;
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v_column_families.resize(num_keys);
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v_keys.resize(num_keys);
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for (size_t i = 0; i < num_keys; i++) {
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v_column_families[i] = column_families[i];
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v_keys[i] = keys[i];
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}
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return MultiGet(v_column_families, v_keys);
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}
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Status Tracer::MultiGet(const size_t num_keys,
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ColumnFamilyHandle* column_family, const Slice* keys) {
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if (num_keys == 0) {
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return Status::OK();
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}
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std::vector<ColumnFamilyHandle*> column_families;
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std::vector<Slice> v_keys;
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column_families.resize(num_keys);
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v_keys.resize(num_keys);
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for (size_t i = 0; i < num_keys; i++) {
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column_families[i] = column_family;
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v_keys[i] = keys[i];
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}
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return MultiGet(column_families, v_keys);
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}
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Status Tracer::MultiGet(const std::vector<ColumnFamilyHandle*>& column_families,
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const std::vector<Slice>& keys) {
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if (column_families.size() != keys.size()) {
|
|
return Status::Corruption("the CFs size and keys size does not match!");
|
|
}
|
|
TraceType trace_type = kTraceMultiGet;
|
|
if (ShouldSkipTrace(trace_type)) {
|
|
return Status::OK();
|
|
}
|
|
uint32_t multiget_size = static_cast<uint32_t>(keys.size());
|
|
Trace trace;
|
|
trace.ts = clock_->NowMicros();
|
|
trace.type = trace_type;
|
|
// Set the payloadmap of the struct member that will be encoded in the
|
|
// payload.
|
|
TracerHelper::SetPayloadMap(trace.payload_map,
|
|
TracePayloadType::kMultiGetSize);
|
|
TracerHelper::SetPayloadMap(trace.payload_map,
|
|
TracePayloadType::kMultiGetCFIDs);
|
|
TracerHelper::SetPayloadMap(trace.payload_map,
|
|
TracePayloadType::kMultiGetKeys);
|
|
// Encode the CFIDs inorder
|
|
std::string cfids_payload;
|
|
std::string keys_payload;
|
|
for (uint32_t i = 0; i < multiget_size; i++) {
|
|
assert(i < column_families.size());
|
|
assert(i < keys.size());
|
|
PutFixed32(&cfids_payload, column_families[i]->GetID());
|
|
PutLengthPrefixedSlice(&keys_payload, keys[i]);
|
|
}
|
|
// Encode the Get struct members into payload. Make sure add them in order.
|
|
PutFixed64(&trace.payload, trace.payload_map);
|
|
PutFixed32(&trace.payload, multiget_size);
|
|
PutLengthPrefixedSlice(&trace.payload, cfids_payload);
|
|
PutLengthPrefixedSlice(&trace.payload, keys_payload);
|
|
return WriteTrace(trace);
|
|
}
|
|
|
|
bool Tracer::ShouldSkipTrace(const TraceType& trace_type) {
|
|
if (IsTraceFileOverMax()) {
|
|
return true;
|
|
}
|
|
if ((trace_options_.filter & kTraceFilterGet && trace_type == kTraceGet) ||
|
|
(trace_options_.filter & kTraceFilterWrite &&
|
|
trace_type == kTraceWrite)) {
|
|
return true;
|
|
}
|
|
++trace_request_count_;
|
|
if (trace_request_count_ < trace_options_.sampling_frequency) {
|
|
return true;
|
|
}
|
|
trace_request_count_ = 0;
|
|
return false;
|
|
}
|
|
|
|
bool Tracer::IsTraceFileOverMax() {
|
|
uint64_t trace_file_size = trace_writer_->GetFileSize();
|
|
return (trace_file_size > trace_options_.max_trace_file_size);
|
|
}
|
|
|
|
Status Tracer::WriteHeader() {
|
|
std::ostringstream s;
|
|
s << kTraceMagic << "\t"
|
|
<< "Trace Version: " << kTraceFileMajorVersion << "."
|
|
<< kTraceFileMinorVersion << "\t"
|
|
<< "RocksDB Version: " << kMajorVersion << "." << kMinorVersion << "\t"
|
|
<< "Format: Timestamp OpType Payload\n";
|
|
std::string header(s.str());
|
|
|
|
Trace trace;
|
|
trace.ts = clock_->NowMicros();
|
|
trace.type = kTraceBegin;
|
|
trace.payload = header;
|
|
return WriteTrace(trace);
|
|
}
|
|
|
|
Status Tracer::WriteFooter() {
|
|
Trace trace;
|
|
trace.ts = clock_->NowMicros();
|
|
trace.type = kTraceEnd;
|
|
TracerHelper::SetPayloadMap(trace.payload_map,
|
|
TracePayloadType::kEmptyPayload);
|
|
trace.payload = "";
|
|
return WriteTrace(trace);
|
|
}
|
|
|
|
Status Tracer::WriteTrace(const Trace& trace) {
|
|
std::string encoded_trace;
|
|
TracerHelper::EncodeTrace(trace, &encoded_trace);
|
|
return trace_writer_->Write(Slice(encoded_trace));
|
|
}
|
|
|
|
Status Tracer::Close() { return WriteFooter(); }
|
|
|
|
} // namespace ROCKSDB_NAMESPACE
|
|
|