mirror of
https://github.com/facebook/rocksdb.git
synced 2024-11-27 02:44:18 +00:00
f4a5446cab
Summary: In this issue [11100](https://github.com/facebook/rocksdb/issues/11100) I try to upgrade dependencies of [BaikalDB](https://github.com/baidu/BaikalDB) and tool chain to gcc-12.I found that when I build rocksdb v6.26.0(maybe I can use newer version),I found that in file trace_replay/trace_replay.cc,the compiler tell me "error mybe-uninitialized".I dound that it can be fixed very easy,so I make this pull request. Pull Request resolved: https://github.com/facebook/rocksdb/pull/11101 Reviewed By: ajkr Differential Revision: D42583031 Pulled By: cbi42 fbshipit-source-id: 7f399f09441a30fe88b83cec5e2fd9885bad5c06
623 lines
20 KiB
C++
623 lines
20 KiB
C++
// 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 "trace_replay/trace_replay.h"
|
|
|
|
#include <chrono>
|
|
#include <sstream>
|
|
#include <thread>
|
|
|
|
#include "db/db_impl/db_impl.h"
|
|
#include "rocksdb/env.h"
|
|
#include "rocksdb/iterator.h"
|
|
#include "rocksdb/options.h"
|
|
#include "rocksdb/slice.h"
|
|
#include "rocksdb/system_clock.h"
|
|
#include "rocksdb/trace_reader_writer.h"
|
|
#include "rocksdb/write_batch.h"
|
|
#include "util/coding.h"
|
|
#include "util/string_util.h"
|
|
|
|
namespace ROCKSDB_NAMESPACE {
|
|
|
|
const std::string kTraceMagic = "feedcafedeadbeef";
|
|
|
|
namespace {
|
|
void DecodeCFAndKey(std::string& buffer, uint32_t* cf_id, Slice* key) {
|
|
Slice buf(buffer);
|
|
GetFixed32(&buf, cf_id);
|
|
GetLengthPrefixedSlice(&buf, key);
|
|
}
|
|
} // namespace
|
|
|
|
Status TracerHelper::ParseVersionStr(std::string& v_string, int* v_num) {
|
|
if (v_string.find_first_of('.') == std::string::npos ||
|
|
v_string.find_first_of('.') != v_string.find_last_of('.')) {
|
|
return Status::Corruption(
|
|
"Corrupted trace file. Incorrect version format.");
|
|
}
|
|
int tmp_num = 0;
|
|
for (int i = 0; i < static_cast<int>(v_string.size()); i++) {
|
|
if (v_string[i] == '.') {
|
|
continue;
|
|
} else if (isdigit(v_string[i])) {
|
|
tmp_num = tmp_num * 10 + (v_string[i] - '0');
|
|
} else {
|
|
return Status::Corruption(
|
|
"Corrupted trace file. Incorrect version format");
|
|
}
|
|
}
|
|
*v_num = tmp_num;
|
|
return Status::OK();
|
|
}
|
|
|
|
Status TracerHelper::ParseTraceHeader(const Trace& header, int* trace_version,
|
|
int* db_version) {
|
|
std::vector<std::string> s_vec;
|
|
int begin = 0, end;
|
|
for (int i = 0; i < 3; i++) {
|
|
assert(header.payload.find("\t", begin) != std::string::npos);
|
|
end = static_cast<int>(header.payload.find("\t", begin));
|
|
s_vec.push_back(header.payload.substr(begin, end - begin));
|
|
begin = end + 1;
|
|
}
|
|
|
|
std::string t_v_str, db_v_str;
|
|
assert(s_vec.size() == 3);
|
|
assert(s_vec[1].find("Trace Version: ") != std::string::npos);
|
|
t_v_str = s_vec[1].substr(15);
|
|
assert(s_vec[2].find("RocksDB Version: ") != std::string::npos);
|
|
db_v_str = s_vec[2].substr(17);
|
|
|
|
Status s;
|
|
s = ParseVersionStr(t_v_str, trace_version);
|
|
if (s != Status::OK()) {
|
|
return s;
|
|
}
|
|
s = ParseVersionStr(db_v_str, db_version);
|
|
return s;
|
|
}
|
|
|
|
void TracerHelper::EncodeTrace(const Trace& trace, std::string* encoded_trace) {
|
|
assert(encoded_trace);
|
|
PutFixed64(encoded_trace, trace.ts);
|
|
encoded_trace->push_back(trace.type);
|
|
PutFixed32(encoded_trace, static_cast<uint32_t>(trace.payload.size()));
|
|
encoded_trace->append(trace.payload);
|
|
}
|
|
|
|
Status TracerHelper::DecodeTrace(const std::string& encoded_trace,
|
|
Trace* trace) {
|
|
assert(trace != nullptr);
|
|
Slice enc_slice = Slice(encoded_trace);
|
|
if (!GetFixed64(&enc_slice, &trace->ts)) {
|
|
return Status::Incomplete("Decode trace string failed");
|
|
}
|
|
if (enc_slice.size() < kTraceTypeSize + kTracePayloadLengthSize) {
|
|
return Status::Incomplete("Decode trace string failed");
|
|
}
|
|
trace->type = static_cast<TraceType>(enc_slice[0]);
|
|
enc_slice.remove_prefix(kTraceTypeSize + kTracePayloadLengthSize);
|
|
trace->payload = enc_slice.ToString();
|
|
return Status::OK();
|
|
}
|
|
|
|
Status TracerHelper::DecodeHeader(const std::string& encoded_trace,
|
|
Trace* header) {
|
|
Status s = TracerHelper::DecodeTrace(encoded_trace, header);
|
|
|
|
if (header->type != kTraceBegin) {
|
|
return Status::Corruption("Corrupted trace file. Incorrect header.");
|
|
}
|
|
if (header->payload.substr(0, kTraceMagic.length()) != kTraceMagic) {
|
|
return Status::Corruption("Corrupted trace file. Incorrect magic.");
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
bool TracerHelper::SetPayloadMap(uint64_t& payload_map,
|
|
const TracePayloadType payload_type) {
|
|
uint64_t old_state = payload_map;
|
|
uint64_t tmp = 1;
|
|
payload_map |= (tmp << payload_type);
|
|
return old_state != payload_map;
|
|
}
|
|
|
|
Status TracerHelper::DecodeTraceRecord(Trace* trace, int trace_file_version,
|
|
std::unique_ptr<TraceRecord>* record) {
|
|
assert(trace != nullptr);
|
|
|
|
if (record != nullptr) {
|
|
record->reset(nullptr);
|
|
}
|
|
|
|
switch (trace->type) {
|
|
// Write
|
|
case kTraceWrite: {
|
|
PinnableSlice rep;
|
|
if (trace_file_version < 2) {
|
|
rep.PinSelf(trace->payload);
|
|
} else {
|
|
Slice buf(trace->payload);
|
|
GetFixed64(&buf, &trace->payload_map);
|
|
int64_t payload_map = static_cast<int64_t>(trace->payload_map);
|
|
Slice write_batch_data;
|
|
while (payload_map) {
|
|
// Find the rightmost set bit.
|
|
uint32_t set_pos =
|
|
static_cast<uint32_t>(log2(payload_map & -payload_map));
|
|
switch (set_pos) {
|
|
case TracePayloadType::kWriteBatchData: {
|
|
GetLengthPrefixedSlice(&buf, &write_batch_data);
|
|
break;
|
|
}
|
|
default: {
|
|
assert(false);
|
|
}
|
|
}
|
|
// unset the rightmost bit.
|
|
payload_map &= (payload_map - 1);
|
|
}
|
|
rep.PinSelf(write_batch_data);
|
|
}
|
|
|
|
if (record != nullptr) {
|
|
record->reset(new WriteQueryTraceRecord(std::move(rep), trace->ts));
|
|
}
|
|
|
|
return Status::OK();
|
|
}
|
|
// Get
|
|
case kTraceGet: {
|
|
uint32_t cf_id = 0;
|
|
Slice get_key;
|
|
|
|
if (trace_file_version < 2) {
|
|
DecodeCFAndKey(trace->payload, &cf_id, &get_key);
|
|
} else {
|
|
Slice buf(trace->payload);
|
|
GetFixed64(&buf, &trace->payload_map);
|
|
int64_t payload_map = static_cast<int64_t>(trace->payload_map);
|
|
while (payload_map) {
|
|
// Find the rightmost set bit.
|
|
uint32_t set_pos =
|
|
static_cast<uint32_t>(log2(payload_map & -payload_map));
|
|
switch (set_pos) {
|
|
case TracePayloadType::kGetCFID: {
|
|
GetFixed32(&buf, &cf_id);
|
|
break;
|
|
}
|
|
case TracePayloadType::kGetKey: {
|
|
GetLengthPrefixedSlice(&buf, &get_key);
|
|
break;
|
|
}
|
|
default: {
|
|
assert(false);
|
|
}
|
|
}
|
|
// unset the rightmost bit.
|
|
payload_map &= (payload_map - 1);
|
|
}
|
|
}
|
|
|
|
if (record != nullptr) {
|
|
PinnableSlice ps;
|
|
ps.PinSelf(get_key);
|
|
record->reset(new GetQueryTraceRecord(cf_id, std::move(ps), trace->ts));
|
|
}
|
|
|
|
return Status::OK();
|
|
}
|
|
// Iterator Seek and SeekForPrev
|
|
case kTraceIteratorSeek:
|
|
case kTraceIteratorSeekForPrev: {
|
|
uint32_t cf_id = 0;
|
|
Slice iter_key;
|
|
Slice lower_bound;
|
|
Slice upper_bound;
|
|
|
|
if (trace_file_version < 2) {
|
|
DecodeCFAndKey(trace->payload, &cf_id, &iter_key);
|
|
} else {
|
|
Slice buf(trace->payload);
|
|
GetFixed64(&buf, &trace->payload_map);
|
|
int64_t payload_map = static_cast<int64_t>(trace->payload_map);
|
|
while (payload_map) {
|
|
// Find the rightmost set bit.
|
|
uint32_t set_pos =
|
|
static_cast<uint32_t>(log2(payload_map & -payload_map));
|
|
switch (set_pos) {
|
|
case TracePayloadType::kIterCFID: {
|
|
GetFixed32(&buf, &cf_id);
|
|
break;
|
|
}
|
|
case TracePayloadType::kIterKey: {
|
|
GetLengthPrefixedSlice(&buf, &iter_key);
|
|
break;
|
|
}
|
|
case TracePayloadType::kIterLowerBound: {
|
|
GetLengthPrefixedSlice(&buf, &lower_bound);
|
|
break;
|
|
}
|
|
case TracePayloadType::kIterUpperBound: {
|
|
GetLengthPrefixedSlice(&buf, &upper_bound);
|
|
break;
|
|
}
|
|
default: {
|
|
assert(false);
|
|
}
|
|
}
|
|
// unset the rightmost bit.
|
|
payload_map &= (payload_map - 1);
|
|
}
|
|
}
|
|
|
|
if (record != nullptr) {
|
|
PinnableSlice ps_key;
|
|
ps_key.PinSelf(iter_key);
|
|
PinnableSlice ps_lower;
|
|
ps_lower.PinSelf(lower_bound);
|
|
PinnableSlice ps_upper;
|
|
ps_upper.PinSelf(upper_bound);
|
|
record->reset(new IteratorSeekQueryTraceRecord(
|
|
static_cast<IteratorSeekQueryTraceRecord::SeekType>(trace->type),
|
|
cf_id, std::move(ps_key), std::move(ps_lower), std::move(ps_upper),
|
|
trace->ts));
|
|
}
|
|
|
|
return Status::OK();
|
|
}
|
|
// MultiGet
|
|
case kTraceMultiGet: {
|
|
if (trace_file_version < 2) {
|
|
return Status::Corruption("MultiGet is not supported.");
|
|
}
|
|
|
|
uint32_t multiget_size = 0;
|
|
std::vector<uint32_t> cf_ids;
|
|
std::vector<PinnableSlice> multiget_keys;
|
|
|
|
Slice cfids_payload;
|
|
Slice keys_payload;
|
|
Slice buf(trace->payload);
|
|
GetFixed64(&buf, &trace->payload_map);
|
|
int64_t payload_map = static_cast<int64_t>(trace->payload_map);
|
|
while (payload_map) {
|
|
// Find the rightmost set bit.
|
|
uint32_t set_pos =
|
|
static_cast<uint32_t>(log2(payload_map & -payload_map));
|
|
switch (set_pos) {
|
|
case TracePayloadType::kMultiGetSize: {
|
|
GetFixed32(&buf, &multiget_size);
|
|
break;
|
|
}
|
|
case TracePayloadType::kMultiGetCFIDs: {
|
|
GetLengthPrefixedSlice(&buf, &cfids_payload);
|
|
break;
|
|
}
|
|
case TracePayloadType::kMultiGetKeys: {
|
|
GetLengthPrefixedSlice(&buf, &keys_payload);
|
|
break;
|
|
}
|
|
default: {
|
|
assert(false);
|
|
}
|
|
}
|
|
// unset the rightmost bit.
|
|
payload_map &= (payload_map - 1);
|
|
}
|
|
if (multiget_size == 0) {
|
|
return Status::InvalidArgument("Empty MultiGet cf_ids or keys.");
|
|
}
|
|
|
|
// Decode the cfids_payload and keys_payload
|
|
cf_ids.reserve(multiget_size);
|
|
multiget_keys.reserve(multiget_size);
|
|
for (uint32_t i = 0; i < multiget_size; i++) {
|
|
uint32_t tmp_cfid = 0;
|
|
Slice tmp_key;
|
|
GetFixed32(&cfids_payload, &tmp_cfid);
|
|
GetLengthPrefixedSlice(&keys_payload, &tmp_key);
|
|
cf_ids.push_back(tmp_cfid);
|
|
Slice s(tmp_key);
|
|
PinnableSlice ps;
|
|
ps.PinSelf(s);
|
|
multiget_keys.push_back(std::move(ps));
|
|
}
|
|
|
|
if (record != nullptr) {
|
|
record->reset(new MultiGetQueryTraceRecord(
|
|
std::move(cf_ids), std::move(multiget_keys), trace->ts));
|
|
}
|
|
|
|
return Status::OK();
|
|
}
|
|
default:
|
|
return Status::NotSupported("Unsupported trace type.");
|
|
}
|
|
}
|
|
|
|
Tracer::Tracer(SystemClock* clock, const TraceOptions& trace_options,
|
|
std::unique_ptr<TraceWriter>&& trace_writer)
|
|
: clock_(clock),
|
|
trace_options_(trace_options),
|
|
trace_writer_(std::move(trace_writer)),
|
|
trace_request_count_(0) {
|
|
// TODO: What if this fails?
|
|
WriteHeader().PermitUncheckedError();
|
|
}
|
|
|
|
Tracer::~Tracer() { trace_writer_.reset(); }
|
|
|
|
Status Tracer::Write(WriteBatch* write_batch) {
|
|
TraceType trace_type = kTraceWrite;
|
|
if (ShouldSkipTrace(trace_type)) {
|
|
return Status::OK();
|
|
}
|
|
Trace trace;
|
|
trace.ts = clock_->NowMicros();
|
|
trace.type = trace_type;
|
|
TracerHelper::SetPayloadMap(trace.payload_map,
|
|
TracePayloadType::kWriteBatchData);
|
|
PutFixed64(&trace.payload, trace.payload_map);
|
|
PutLengthPrefixedSlice(&trace.payload, Slice(write_batch->Data()));
|
|
return WriteTrace(trace);
|
|
}
|
|
|
|
Status Tracer::Get(ColumnFamilyHandle* column_family, const Slice& key) {
|
|
TraceType trace_type = kTraceGet;
|
|
if (ShouldSkipTrace(trace_type)) {
|
|
return Status::OK();
|
|
}
|
|
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::kGetCFID);
|
|
TracerHelper::SetPayloadMap(trace.payload_map, TracePayloadType::kGetKey);
|
|
// Encode the Get struct members into payload. Make sure add them in order.
|
|
PutFixed64(&trace.payload, trace.payload_map);
|
|
PutFixed32(&trace.payload, column_family->GetID());
|
|
PutLengthPrefixedSlice(&trace.payload, key);
|
|
return WriteTrace(trace);
|
|
}
|
|
|
|
Status Tracer::IteratorSeek(const uint32_t& cf_id, const Slice& key,
|
|
const Slice& lower_bound, const Slice upper_bound) {
|
|
TraceType trace_type = kTraceIteratorSeek;
|
|
if (ShouldSkipTrace(trace_type)) {
|
|
return Status::OK();
|
|
}
|
|
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::kIterCFID);
|
|
TracerHelper::SetPayloadMap(trace.payload_map, TracePayloadType::kIterKey);
|
|
if (lower_bound.size() > 0) {
|
|
TracerHelper::SetPayloadMap(trace.payload_map,
|
|
TracePayloadType::kIterLowerBound);
|
|
}
|
|
if (upper_bound.size() > 0) {
|
|
TracerHelper::SetPayloadMap(trace.payload_map,
|
|
TracePayloadType::kIterUpperBound);
|
|
}
|
|
// Encode the Iterator struct members into payload. Make sure add them in
|
|
// order.
|
|
PutFixed64(&trace.payload, trace.payload_map);
|
|
PutFixed32(&trace.payload, cf_id);
|
|
PutLengthPrefixedSlice(&trace.payload, key);
|
|
if (lower_bound.size() > 0) {
|
|
PutLengthPrefixedSlice(&trace.payload, lower_bound);
|
|
}
|
|
if (upper_bound.size() > 0) {
|
|
PutLengthPrefixedSlice(&trace.payload, upper_bound);
|
|
}
|
|
return WriteTrace(trace);
|
|
}
|
|
|
|
Status Tracer::IteratorSeekForPrev(const uint32_t& cf_id, const Slice& key,
|
|
const Slice& lower_bound,
|
|
const Slice upper_bound) {
|
|
TraceType trace_type = kTraceIteratorSeekForPrev;
|
|
if (ShouldSkipTrace(trace_type)) {
|
|
return Status::OK();
|
|
}
|
|
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::kIterCFID);
|
|
TracerHelper::SetPayloadMap(trace.payload_map, TracePayloadType::kIterKey);
|
|
if (lower_bound.size() > 0) {
|
|
TracerHelper::SetPayloadMap(trace.payload_map,
|
|
TracePayloadType::kIterLowerBound);
|
|
}
|
|
if (upper_bound.size() > 0) {
|
|
TracerHelper::SetPayloadMap(trace.payload_map,
|
|
TracePayloadType::kIterUpperBound);
|
|
}
|
|
// Encode the Iterator struct members into payload. Make sure add them in
|
|
// order.
|
|
PutFixed64(&trace.payload, trace.payload_map);
|
|
PutFixed32(&trace.payload, cf_id);
|
|
PutLengthPrefixedSlice(&trace.payload, key);
|
|
if (lower_bound.size() > 0) {
|
|
PutLengthPrefixedSlice(&trace.payload, lower_bound);
|
|
}
|
|
if (upper_bound.size() > 0) {
|
|
PutLengthPrefixedSlice(&trace.payload, upper_bound);
|
|
}
|
|
return WriteTrace(trace);
|
|
}
|
|
|
|
Status Tracer::MultiGet(const size_t num_keys,
|
|
ColumnFamilyHandle** column_families,
|
|
const Slice* keys) {
|
|
if (num_keys == 0) {
|
|
return Status::OK();
|
|
}
|
|
std::vector<ColumnFamilyHandle*> v_column_families;
|
|
std::vector<Slice> v_keys;
|
|
v_column_families.resize(num_keys);
|
|
v_keys.resize(num_keys);
|
|
for (size_t i = 0; i < num_keys; i++) {
|
|
v_column_families[i] = column_families[i];
|
|
v_keys[i] = keys[i];
|
|
}
|
|
return MultiGet(v_column_families, v_keys);
|
|
}
|
|
|
|
Status Tracer::MultiGet(const size_t num_keys,
|
|
ColumnFamilyHandle* column_family, const Slice* keys) {
|
|
if (num_keys == 0) {
|
|
return Status::OK();
|
|
}
|
|
std::vector<ColumnFamilyHandle*> column_families;
|
|
std::vector<Slice> v_keys;
|
|
column_families.resize(num_keys);
|
|
v_keys.resize(num_keys);
|
|
for (size_t i = 0; i < num_keys; i++) {
|
|
column_families[i] = column_family;
|
|
v_keys[i] = keys[i];
|
|
}
|
|
return MultiGet(column_families, v_keys);
|
|
}
|
|
|
|
Status Tracer::MultiGet(const std::vector<ColumnFamilyHandle*>& column_families,
|
|
const std::vector<Slice>& keys) {
|
|
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;
|
|
}
|
|
|
|
TraceFilterType filter_mask = kTraceFilterNone;
|
|
switch (trace_type) {
|
|
case kTraceNone:
|
|
case kTraceBegin:
|
|
case kTraceEnd:
|
|
filter_mask = kTraceFilterNone;
|
|
break;
|
|
case kTraceWrite:
|
|
filter_mask = kTraceFilterWrite;
|
|
break;
|
|
case kTraceGet:
|
|
filter_mask = kTraceFilterGet;
|
|
break;
|
|
case kTraceIteratorSeek:
|
|
filter_mask = kTraceFilterIteratorSeek;
|
|
break;
|
|
case kTraceIteratorSeekForPrev:
|
|
filter_mask = kTraceFilterIteratorSeekForPrev;
|
|
break;
|
|
case kBlockTraceIndexBlock:
|
|
case kBlockTraceFilterBlock:
|
|
case kBlockTraceDataBlock:
|
|
case kBlockTraceUncompressionDictBlock:
|
|
case kBlockTraceRangeDeletionBlock:
|
|
case kIOTracer:
|
|
filter_mask = kTraceFilterNone;
|
|
break;
|
|
case kTraceMultiGet:
|
|
filter_mask = kTraceFilterMultiGet;
|
|
break;
|
|
case kTraceMax:
|
|
assert(false);
|
|
filter_mask = kTraceFilterNone;
|
|
break;
|
|
}
|
|
if (filter_mask != kTraceFilterNone && trace_options_.filter & filter_mask) {
|
|
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
|