1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
|
/*
* Copyright (C) 2018 Codership Oy <info@codership.com>
*
* This file is part of wsrep-lib.
*
* Wsrep-lib is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* Wsrep-lib is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with wsrep-lib. If not, see <https://www.gnu.org/licenses/>.
*/
#include "db_simulator.hpp"
#include "db_client.hpp"
#include "db_threads.hpp"
#include "db_tls.hpp"
#include "wsrep/logger.hpp"
#include <boost/filesystem.hpp>
#include <sstream>
static db::ti thread_instrumentation;
static db::tls tls_service;
void db::simulator::run()
{
start();
stop();
std::flush(std::cerr);
std::cout << "Results:\n";
std::cout << stats() << std::endl;
std::cout << db::ti::stats() << std::endl;
std::cout << db::tls::stats() << std::endl;
}
void db::simulator::sst(db::server& server,
const std::string& request,
const wsrep::gtid& gtid,
bool bypass)
{
// The request may contain extra trailing '\0' after it goes
// through the provider, strip it first.
std::string name(request);
name.erase(std::find(name.begin(), name.end(), '\0'), name.end());
wsrep::unique_lock<wsrep::mutex> lock(mutex_);
auto i(servers_.find(name));
wsrep::log_info() << "SST request '" << name << "'";
if (i == servers_.end())
{
wsrep::log_error() << "Server " << request << " not found";
wsrep::log_info() << "servers:";
for (const auto& s : servers_)
{
wsrep::log_info() << "server: " << s.first;
}
throw wsrep::runtime_error("Server " + request + " not found");
}
if (bypass == false)
{
wsrep::log_info() << "SST "
<< server.server_state().name()
<< " -> " << request;
i->second->storage_engine().store_position(gtid);
i->second->storage_engine().store_view(
server.storage_engine().get_view());
}
db::client dummy(*(i->second), wsrep::client_id(-1),
wsrep::client_state::m_local, params());
if (i->second->server_state().sst_received(dummy.client_service(), 0))
{
throw wsrep::runtime_error("Call to SST received failed");
}
server.server_state().sst_sent(gtid, 0);
}
std::string db::simulator::stats() const
{
auto duration(std::chrono::duration<double>(
clients_stop_ - clients_start_).count());
long long transactions(stats_.commits + stats_.rollbacks);
long long bf_aborts(0);
for (const auto& s : servers_)
{
bf_aborts += s.second->storage_engine().bf_aborts();
}
std::ostringstream os;
os << "Number of transactions: " << transactions
<< "\n"
<< "Seconds: " << duration
<< " \n"
<< "Transactions per second: " << double(transactions)/double(duration)
<< "\n"
<< "BF aborts: "
<< bf_aborts
<< "\n"
<< "Client commits: " << stats_.commits
<< "\n"
<< "Client rollbacks: " << stats_.rollbacks
<< "\n"
<< "Client replays: " << stats_.replays;
return os.str();
}
////////////////////////////////////////////////////////////////////////////////
// Private //
////////////////////////////////////////////////////////////////////////////////
void db::simulator::start()
{
thread_instrumentation.level(params_.thread_instrumentation);
thread_instrumentation.cond_checks(params_.cond_checks);
tls_service.init(params_.tls_service);
wsrep::log_info() << "Provider: " << params_.wsrep_provider;
std::string cluster_address(build_cluster_address());
wsrep::log_info() << "Cluster address: " << cluster_address;
for (size_t i(0); i < params_.n_servers; ++i)
{
std::ostringstream name_os;
name_os << (i + 1);
std::ostringstream id_os;
id_os << (i + 1);
std::ostringstream address_os;
address_os << "127.0.0.1:" << server_port(i);
wsrep::id server_id(id_os.str());
auto it(servers_.insert(
std::make_pair(
name_os.str(),
std::make_unique<db::server>(
*this,
name_os.str(),
address_os.str()))));
if (it.second == false)
{
throw wsrep::runtime_error("Failed to add server");
}
boost::filesystem::path dir("dbsim_" + id_os.str() + "_data");
boost::filesystem::create_directory(dir);
db::server& server(*it.first->second);
server.server_state().debug_log_level(params_.debug_log_level);
std::string server_options(params_.wsrep_provider_options);
wsrep::provider::services services;
services.thread_service = params_.thread_instrumentation
? &thread_instrumentation
: nullptr;
services.tls_service = params_.tls_service
? &tls_service
: nullptr;
if (server.server_state().load_provider(params_.wsrep_provider,
server_options, services))
{
throw wsrep::runtime_error("Failed to load provider");
}
if (server.server_state().connect("sim_cluster", cluster_address, "",
i == 0))
{
throw wsrep::runtime_error("Failed to connect");
}
wsrep::log_debug() << "main: Starting applier";
server.start_applier();
wsrep::log_debug() << "main: Waiting initializing state";
if (server.server_state().wait_until_state(
wsrep::server_state::s_initializing))
{
throw wsrep::runtime_error("Failed to reach initializing state");
}
wsrep::log_debug() << "main: Calling initialized";
server.server_state().initialized();
wsrep::log_debug() << "main: Waiting for synced state";
if (server.server_state().wait_until_state(
wsrep::server_state::s_synced))
{
throw wsrep::runtime_error("Failed to reach synced state");
}
wsrep::log_debug() << "main: Server synced";
}
// Start client threads
wsrep::log_info() << "####################### Starting client load";
clients_start_ = std::chrono::steady_clock::now();
size_t index(0);
for (auto& i : servers_)
{
if (params_.topology.size() == 0 || params_.topology[index] == 'm')
{
i.second->start_clients();
}
++index;
}
}
void db::simulator::stop()
{
for (auto& i : servers_)
{
db::server& server(*i.second);
server.stop_clients();
}
clients_stop_ = std::chrono::steady_clock::now();
wsrep::log_info() << "######## Stats ############";
wsrep::log_info() << stats();
std::cout << db::ti::stats() << std::endl;
wsrep::log_info() << "######## Stats ############";
if (params_.fast_exit)
{
exit(0);
}
for (auto& i : servers_)
{
db::server& server(*i.second);
wsrep::log_info() << "Status for server: "
<< server.server_state().id();
auto status(server.server_state().provider().status());
for_each(status.begin(), status.end(),
[](const wsrep::provider::status_variable& sv)
{
wsrep::log_info() << sv.name() << " = " << sv.value();
});
server.server_state().disconnect();
if (server.server_state().wait_until_state(
wsrep::server_state::s_disconnected))
{
throw wsrep::runtime_error("Failed to reach disconnected state");
}
server.stop_applier();
server.server_state().unload_provider();
}
}
std::string db::simulator::server_port(size_t i) const
{
std::ostringstream os;
os << (10000 + (i + 1)*10);
return os.str();
}
std::string db::simulator::build_cluster_address() const
{
std::string ret;
if (params_.wsrep_provider.find("galera_smm") != std::string::npos)
{
ret += "gcomm://";
}
for (size_t i(0); i < params_.n_servers; ++i)
{
std::ostringstream sa_os;
sa_os << "127.0.0.1:";
sa_os << server_port(i);
ret += sa_os.str();
if (i < params_.n_servers - 1) ret += ",";
}
return ret;
}
|
