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
|
/*
* ZeroTier One - Network Virtualization Everywhere
* Copyright (C) 2011-2019 ZeroTier, Inc. https://www.zerotier.com/
*
* This program 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 3 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*
* --
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial closed-source software that incorporates or links
* directly against ZeroTier software without disclosing the source code
* of your own application.
*/
#include "DBMirrorSet.hpp"
namespace ZeroTier {
DBMirrorSet::DBMirrorSet(DB::ChangeListener *listener) :
_listener(listener),
_running(true)
{
_syncCheckerThread = std::thread([this]() {
for(;;) {
for(int i=0;i<120;++i) { // 1 minute delay between checks
if (!_running)
return;
std::this_thread::sleep_for(std::chrono::milliseconds(500));
}
std::vector< std::shared_ptr<DB> > dbs;
{
std::lock_guard<std::mutex> l(_dbs_l);
if (_dbs.size() <= 1)
continue; // no need to do this if there's only one DB, so skip the iteration
dbs = _dbs;
}
for(auto db=dbs.begin();db!=dbs.end();++db) {
(*db)->each([this,&dbs,&db](uint64_t networkId,const nlohmann::json &network,uint64_t memberId,const nlohmann::json &member) {
if (memberId == 0) {
for(auto db2=dbs.begin();db2!=dbs.end();++db2) {
if (db->get() != db2->get()) {
nlohmann::json nw2;
if ((!(*db2)->get(networkId,nw2))||(OSUtils::jsonInt(nw2["revision"],0) < OSUtils::jsonInt(network["revision"],0))) {
nw2 = network;
(*db2)->save(nw2,false);
}
}
}
} else {
for(auto db2=dbs.begin();db2!=dbs.end();++db2) {
if (db->get() != db2->get()) {
nlohmann::json nw2,m2;
if ((!(*db2)->get(networkId,nw2,memberId,m2))||(OSUtils::jsonInt(nw2["revision"],0) < OSUtils::jsonInt(network["revision"],0))) {
m2 = member;
(*db2)->save(m2,false);
}
}
}
}
});
}
}
});
}
DBMirrorSet::~DBMirrorSet()
{
_running = false;
_syncCheckerThread.join();
}
bool DBMirrorSet::hasNetwork(const uint64_t networkId) const
{
std::lock_guard<std::mutex> l(_dbs_l);
for(auto d=_dbs.begin();d!=_dbs.end();++d) {
if ((*d)->hasNetwork(networkId))
return true;
}
return false;
}
bool DBMirrorSet::get(const uint64_t networkId,nlohmann::json &network)
{
std::lock_guard<std::mutex> l(_dbs_l);
for(auto d=_dbs.begin();d!=_dbs.end();++d) {
if ((*d)->get(networkId,network)) {
return true;
}
}
return false;
}
bool DBMirrorSet::get(const uint64_t networkId,nlohmann::json &network,const uint64_t memberId,nlohmann::json &member)
{
std::lock_guard<std::mutex> l(_dbs_l);
for(auto d=_dbs.begin();d!=_dbs.end();++d) {
if ((*d)->get(networkId,network,memberId,member))
return true;
}
return false;
}
bool DBMirrorSet::get(const uint64_t networkId,nlohmann::json &network,const uint64_t memberId,nlohmann::json &member,DB::NetworkSummaryInfo &info)
{
std::lock_guard<std::mutex> l(_dbs_l);
for(auto d=_dbs.begin();d!=_dbs.end();++d) {
if ((*d)->get(networkId,network,memberId,member,info))
return true;
}
return false;
}
bool DBMirrorSet::get(const uint64_t networkId,nlohmann::json &network,std::vector<nlohmann::json> &members)
{
std::lock_guard<std::mutex> l(_dbs_l);
for(auto d=_dbs.begin();d!=_dbs.end();++d) {
if ((*d)->get(networkId,network,members))
return true;
}
return false;
}
void DBMirrorSet::networks(std::set<uint64_t> &networks)
{
std::lock_guard<std::mutex> l(_dbs_l);
for(auto d=_dbs.begin();d!=_dbs.end();++d) {
(*d)->networks(networks);
}
}
bool DBMirrorSet::waitForReady()
{
bool r = false;
std::lock_guard<std::mutex> l(_dbs_l);
for(auto d=_dbs.begin();d!=_dbs.end();++d) {
r |= (*d)->waitForReady();
}
return r;
}
bool DBMirrorSet::isReady()
{
std::lock_guard<std::mutex> l(_dbs_l);
for(auto d=_dbs.begin();d!=_dbs.end();++d) {
if (!(*d)->isReady())
return false;
}
return true;
}
bool DBMirrorSet::save(nlohmann::json &record,bool notifyListeners)
{
std::vector< std::shared_ptr<DB> > dbs;
{
std::lock_guard<std::mutex> l(_dbs_l);
dbs = _dbs;
}
if (notifyListeners) {
for(auto d=dbs.begin();d!=dbs.end();++d) {
if ((*d)->save(record,true))
return true;
}
return false;
} else {
bool modified = false;
for(auto d=dbs.begin();d!=dbs.end();++d) {
modified |= (*d)->save(record,false);
}
return modified;
}
}
void DBMirrorSet::eraseNetwork(const uint64_t networkId)
{
std::lock_guard<std::mutex> l(_dbs_l);
for(auto d=_dbs.begin();d!=_dbs.end();++d) {
(*d)->eraseNetwork(networkId);
}
}
void DBMirrorSet::eraseMember(const uint64_t networkId,const uint64_t memberId)
{
std::lock_guard<std::mutex> l(_dbs_l);
for(auto d=_dbs.begin();d!=_dbs.end();++d) {
(*d)->eraseMember(networkId,memberId);
}
}
void DBMirrorSet::nodeIsOnline(const uint64_t networkId,const uint64_t memberId,const InetAddress &physicalAddress)
{
std::lock_guard<std::mutex> l(_dbs_l);
for(auto d=_dbs.begin();d!=_dbs.end();++d) {
(*d)->nodeIsOnline(networkId,memberId,physicalAddress);
}
}
void DBMirrorSet::onNetworkUpdate(const void *db,uint64_t networkId,const nlohmann::json &network)
{
nlohmann::json record(network);
std::lock_guard<std::mutex> l(_dbs_l);
for(auto d=_dbs.begin();d!=_dbs.end();++d) {
if (d->get() != db) {
(*d)->save(record,false);
}
}
_listener->onNetworkUpdate(this,networkId,network);
}
void DBMirrorSet::onNetworkMemberUpdate(const void *db,uint64_t networkId,uint64_t memberId,const nlohmann::json &member)
{
nlohmann::json record(member);
std::lock_guard<std::mutex> l(_dbs_l);
for(auto d=_dbs.begin();d!=_dbs.end();++d) {
if (d->get() != db) {
(*d)->save(record,false);
}
}
_listener->onNetworkMemberUpdate(this,networkId,memberId,member);
}
void DBMirrorSet::onNetworkMemberDeauthorize(const void *db,uint64_t networkId,uint64_t memberId)
{
_listener->onNetworkMemberDeauthorize(this,networkId,memberId);
}
} // namespace ZeroTier
|
