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ZeroTierOne/controller/RethinkDB.cpp

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/*
* ZeroTier One - Network Virtualization Everywhere
* Copyright (C) 2011-2018 ZeroTier, Inc.
*
* 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/>.
*/
//#define ZT_CONTROLLER_USE_RETHINKDB
#ifdef ZT_CONTROLLER_USE_RETHINKDB
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include "RethinkDB.hpp"
#include "EmbeddedNetworkController.hpp"
#include "../version.h"
#include <chrono>
#include <algorithm>
#include <stdexcept>
#include "../ext/librethinkdbxx/build/include/rethinkdb.h"
namespace R = RethinkDB;
using json = nlohmann::json;
namespace ZeroTier {
static const char *_timestr()
{
time_t t = time(0);
char *ts = ctime(&t);
char *p = ts;
if (!p)
return "";
while (*p) {
if (*p == '\n') {
*p = (char)0;
break;
}
++p;
}
return ts;
}
RethinkDB::RethinkDB(EmbeddedNetworkController *const nc,const Identity &myId,const char *path) :
DB(nc,myId,path),
_ready(2), // two tables need to be synchronized before we're ready, so this is ready when it reaches 0
_run(1),
_waitNoticePrinted(false)
{
// rethinkdb:host:port:db[:auth]
std::vector<std::string> ps(OSUtils::split(path,":","",""));
if ((ps.size() < 4)||(ps[0] != "rethinkdb"))
throw std::runtime_error("invalid rethinkdb database url");
_host = ps[1];
_port = Utils::strToInt(ps[2].c_str());
_db = ps[3];
if (ps.size() > 4)
_auth = ps[4];
_readyLock.lock();
_membersDbWatcher = std::thread([this]() {
try {
while (_run == 1) {
try {
std::unique_ptr<R::Connection> rdb(R::connect(this->_host,this->_port,this->_auth));
if (rdb) {
_membersDbWatcherConnection = (void *)rdb.get();
auto cur = R::db(this->_db).table("Member",R::optargs("read_mode","outdated")).get_all(this->_myAddressStr,R::optargs("index","controllerId")).changes(R::optargs("squash",0.05,"include_initial",true,"include_types",true,"include_states",true)).run(*rdb);
while (cur.has_next()) {
if (_run != 1) break;
json tmp(json::parse(cur.next().as_json()));
if ((tmp["type"] == "state")&&(tmp["state"] == "ready")) {
if (--this->_ready == 0) {
if (_waitNoticePrinted)
fprintf(stderr,"[%s] NOTICE: %.10llx controller RethinkDB data download complete." ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt());
this->_readyLock.unlock();
}
} else {
try {
json &ov = tmp["old_val"];
json &nv = tmp["new_val"];
json oldConfig,newConfig;
if (ov.is_object()) oldConfig = ov["config"];
if (nv.is_object()) newConfig = nv["config"];
if (oldConfig.is_object()||newConfig.is_object())
this->_memberChanged(oldConfig,newConfig,(this->_ready <= 0));
} catch ( ... ) {} // ignore bad records
}
}
}
} catch (std::exception &e) {
fprintf(stderr,"[%s] ERROR: %.10llx controller RethinkDB (member change stream): %s" ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt(),e.what());
} catch (R::Error &e) {
fprintf(stderr,"[%s] ERROR: %.10llx controller RethinkDB (member change stream): %s" ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt(),e.message.c_str());
} catch ( ... ) {
fprintf(stderr,"[%s] ERROR: %.10llx controller RethinkDB (member change stream): unknown exception" ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt());
}
std::this_thread::sleep_for(std::chrono::milliseconds(250));
}
} catch ( ... ) {}
});
_networksDbWatcher = std::thread([this]() {
try {
while (_run == 1) {
try {
std::unique_ptr<R::Connection> rdb(R::connect(this->_host,this->_port,this->_auth));
if (rdb) {
_networksDbWatcherConnection = (void *)rdb.get();
auto cur = R::db(this->_db).table("Network",R::optargs("read_mode","outdated")).get_all(this->_myAddressStr,R::optargs("index","controllerId")).changes(R::optargs("squash",0.05,"include_initial",true,"include_types",true,"include_states",true)).run(*rdb);
while (cur.has_next()) {
if (_run != 1) break;
json tmp(json::parse(cur.next().as_json()));
if ((tmp["type"] == "state")&&(tmp["state"] == "ready")) {
if (--this->_ready == 0) {
if (_waitNoticePrinted)
fprintf(stderr,"[%s] NOTICE: %.10llx controller RethinkDB data download complete." ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt());
this->_readyLock.unlock();
}
} else {
try {
json &ov = tmp["old_val"];
json &nv = tmp["new_val"];
json oldConfig,newConfig;
if (ov.is_object()) oldConfig = ov["config"];
if (nv.is_object()) newConfig = nv["config"];
if (oldConfig.is_object()||newConfig.is_object())
this->_networkChanged(oldConfig,newConfig,(this->_ready <= 0));
} catch ( ... ) {} // ignore bad records
}
}
}
} catch (std::exception &e) {
fprintf(stderr,"[%s] ERROR: %.10llx controller RethinkDB (network change stream): %s" ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt(),e.what());
} catch (R::Error &e) {
fprintf(stderr,"[%s] ERROR: %.10llx controller RethinkDB (network change stream): %s" ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt(),e.message.c_str());
} catch ( ... ) {
fprintf(stderr,"[%s] ERROR: %.10llx controller RethinkDB (network change stream): unknown exception" ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt());
}
std::this_thread::sleep_for(std::chrono::milliseconds(250));
}
} catch ( ... ) {}
});
for(int t=0;t<ZT_CONTROLLER_RETHINKDB_COMMIT_THREADS;++t) {
_commitThread[t] = std::thread([this]() {
try {
std::unique_ptr<R::Connection> rdb;
nlohmann::json *config = (nlohmann::json *)0;
while ((this->_commitQueue.get(config))&&(_run == 1)) {
if (!config)
continue;
nlohmann::json record;
const char *table = (const char *)0;
std::string deleteId;
try {
const std::string objtype = (*config)["objtype"];
if (objtype == "member") {
const std::string nwid = (*config)["nwid"];
const std::string id = (*config)["id"];
record["id"] = nwid + "-" + id;
record["controllerId"] = this->_myAddressStr;
record["networkId"] = nwid;
record["nodeId"] = id;
record["config"] = *config;
table = "Member";
} else if (objtype == "network") {
const std::string id = (*config)["id"];
record["id"] = id;
record["controllerId"] = this->_myAddressStr;
record["config"] = *config;
table = "Network";
} else if (objtype == "trace") {
record = *config;
table = "RemoteTrace";
} else if (objtype == "_delete_network") {
deleteId = (*config)["id"];
table = "Network";
} else if (objtype == "_delete_member") {
deleteId = (*config)["nwid"];
deleteId.push_back('-');
const std::string tmp = (*config)["id"];
deleteId.append(tmp);
table = "Member";
}
} catch (std::exception &e) {
fprintf(stderr,"[%s] ERROR: %.10llx controller RethinkDB (insert/update record creation): %s" ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt(),e.what());
table = (const char *)0;
} catch (R::Error &e) {
fprintf(stderr,"[%s] ERROR: %.10llx controller RethinkDB (insert/update record creation): %s" ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt(),e.message.c_str());
table = (const char *)0;
} catch ( ... ) {
fprintf(stderr,"[%s] ERROR: %.10llx controller RethinkDB (insert/update record creation): unknown exception" ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt());
table = (const char *)0;
}
delete config;
if (!table)
continue;
const std::string jdump(OSUtils::jsonDump(record,-1));
while (_run == 1) {
try {
if (!rdb)
rdb = R::connect(this->_host,this->_port,this->_auth);
if (rdb) {
if (deleteId.length() > 0) {
//printf("DELETE: %s" ZT_EOL_S,deleteId.c_str());
R::db(this->_db).table(table).get(deleteId).delete_().run(*rdb);
} else {
//printf("UPSERT: %s" ZT_EOL_S,record.dump().c_str());
R::db(this->_db).table(table).insert(R::Datum::from_json(jdump),R::optargs("conflict","update","return_changes",false)).run(*rdb);
}
break;
} else {
fprintf(stderr,"[%s] ERROR: %.10llx controller RethinkDB (insert/update): connect failed (will retry)" ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt());
rdb.reset();
}
} catch (std::exception &e) {
fprintf(stderr,"[%s] ERROR: %.10llx controller RethinkDB (insert/update): %s [%s]" ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt(),e.what(),jdump.c_str());
rdb.reset();
} catch (R::Error &e) {
fprintf(stderr,"[%s] ERROR: %.10llx controller RethinkDB (insert/update): %s [%s]" ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt(),e.message.c_str(),jdump.c_str());
rdb.reset();
} catch ( ... ) {
fprintf(stderr,"[%s] ERROR: %.10llx controller RethinkDB (insert/update): unknown exception [%s]" ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt(),jdump.c_str());
rdb.reset();
}
std::this_thread::sleep_for(std::chrono::milliseconds(250));
}
}
} catch (std::exception &e) {
fprintf(stderr,"[%s] ERROR: %.10llx controller RethinkDB (insert/update outer loop): %s" ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt(),e.what());
} catch (R::Error &e) {
fprintf(stderr,"[%s] ERROR: %.10llx controller RethinkDB (insert/update outer loop): %s" ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt(),e.message.c_str());
} catch ( ... ) {
fprintf(stderr,"[%s] ERROR: %.10llx controller RethinkDB (insert/update outer loop): unknown exception" ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt());
}
});
}
_onlineNotificationThread = std::thread([this]() {
int64_t lastUpdatedNetworkStatus = 0;
std::unordered_map< std::pair<uint64_t,uint64_t>,int64_t,_PairHasher > lastOnlineCumulative;
try {
std::unique_ptr<R::Connection> rdb;
while (_run == 1) {
try {
if (!rdb) {
_connected = 0;
rdb = R::connect(this->_host,this->_port,this->_auth);
}
if (rdb) {
_connected = 1;
R::Array batch;
R::Object tmpobj;
std::unordered_map< std::pair<uint64_t,uint64_t>,std::pair<int64_t,InetAddress>,_PairHasher > lastOnline;
{
std::lock_guard<std::mutex> l(_lastOnline_l);
lastOnline.swap(_lastOnline);
}
for(auto i=lastOnline.begin();i!=lastOnline.end();++i) {
lastOnlineCumulative[i->first] = i->second.first;
char tmp[64],tmp2[64];
OSUtils::ztsnprintf(tmp,sizeof(tmp),"%.16llx-%.10llx",i->first.first,i->first.second);
tmpobj["id"] = tmp;
tmpobj["ts"] = i->second.first;
tmpobj["phy"] = i->second.second.toIpString(tmp2);
batch.emplace_back(tmpobj);
if (batch.size() >= 1024) {
R::db(this->_db).table("MemberStatus",R::optargs("read_mode","outdated")).insert(batch,R::optargs("conflict","update")).run(*rdb);
batch.clear();
}
}
if (batch.size() > 0) {
R::db(this->_db).table("MemberStatus",R::optargs("read_mode","outdated")).insert(batch,R::optargs("conflict","update")).run(*rdb);
batch.clear();
}
tmpobj.clear();
const int64_t now = OSUtils::now();
if ((now - lastUpdatedNetworkStatus) > 10000) {
lastUpdatedNetworkStatus = now;
std::vector< std::pair< uint64_t,std::shared_ptr<_Network> > > networks;
{
std::lock_guard<std::mutex> l(_networks_l);
networks.reserve(_networks.size() + 1);
for(auto i=_networks.begin();i!=_networks.end();++i)
networks.push_back(*i);
}
for(auto i=networks.begin();i!=networks.end();++i) {
char tmp[64];
Utils::hex(i->first,tmp);
tmpobj["id"] = tmp;
{
std::lock_guard<std::mutex> l2(i->second->lock);
tmpobj["authorizedMemberCount"] = i->second->authorizedMembers.size();
tmpobj["totalMemberCount"] = i->second->members.size();
unsigned long onlineMemberCount = 0;
for(auto m=i->second->members.begin();m!=i->second->members.end();++m) {
auto lo = lastOnlineCumulative.find(std::pair<uint64_t,uint64_t>(i->first,m->first));
if (lo != lastOnlineCumulative.end()) {
if ((now - lo->second) <= (ZT_NETWORK_AUTOCONF_DELAY * 2))
++onlineMemberCount;
else lastOnlineCumulative.erase(lo);
}
}
tmpobj["onlineMemberCount"] = onlineMemberCount;
tmpobj["bridgeCount"] = i->second->activeBridgeMembers.size();
tmpobj["ts"] = now;
}
batch.emplace_back(tmpobj);
if (batch.size() >= 1024) {
R::db(this->_db).table("NetworkStatus",R::optargs("read_mode","outdated")).insert(batch,R::optargs("conflict","update")).run(*rdb);
batch.clear();
}
}
if (batch.size() > 0) {
R::db(this->_db).table("NetworkStatus",R::optargs("read_mode","outdated")).insert(batch,R::optargs("conflict","update")).run(*rdb);
batch.clear();
}
}
}
} catch (std::exception &e) {
fprintf(stderr,"[%s] ERROR: %.10llx controller RethinkDB (node status update): %s" ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt(),e.what());
rdb.reset();
} catch (R::Error &e) {
fprintf(stderr,"[%s] ERROR: %.10llx controller RethinkDB (node status update): %s" ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt(),e.message.c_str());
rdb.reset();
} catch ( ... ) {
fprintf(stderr,"[%s] ERROR: %.10llx controller RethinkDB (node status update): unknown exception" ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt());
rdb.reset();
}
std::this_thread::sleep_for(std::chrono::milliseconds(250));
}
} catch ( ... ) {}
});
_heartbeatThread = std::thread([this]() {
try {
R::Object controllerRecord;
std::unique_ptr<R::Connection> rdb;
{
char publicId[1024];
//char secretId[1024];
char hostname[1024];
this->_myId.toString(false,publicId);
//this->_myId.toString(true,secretId);
if (gethostname(hostname,sizeof(hostname)) != 0) {
hostname[0] = (char)0;
} else {
for(int i=0;i<sizeof(hostname);++i) {
if ((hostname[i] == '.')||(hostname[i] == 0)) {
hostname[i] = (char)0;
break;
}
}
}
controllerRecord["id"] = this->_myAddressStr.c_str();
controllerRecord["publicIdentity"] = publicId;
//controllerRecord["secretIdentity"] = secretId;
if (hostname[0])
controllerRecord["clusterHost"] = hostname;
controllerRecord["vMajor"] = ZEROTIER_ONE_VERSION_MAJOR;
controllerRecord["vMinor"] = ZEROTIER_ONE_VERSION_MINOR;
controllerRecord["vRev"] = ZEROTIER_ONE_VERSION_REVISION;
controllerRecord["vBuild"] = ZEROTIER_ONE_VERSION_BUILD;
}
while (_run == 1) {
try {
if (!rdb)
rdb = R::connect(this->_host,this->_port,this->_auth);
if (rdb) {
controllerRecord["lastAlive"] = OSUtils::now();
//printf("HEARTBEAT: %s" ZT_EOL_S,tmp);
R::db(this->_db).table("Controller",R::optargs("read_mode","outdated")).insert(controllerRecord,R::optargs("conflict","update")).run(*rdb);
}
} catch ( ... ) {
rdb.reset();
}
std::this_thread::sleep_for(std::chrono::milliseconds(1000));
}
} catch ( ... ) {}
});
}
RethinkDB::~RethinkDB()
{
_run = 0;
std::this_thread::sleep_for(std::chrono::milliseconds(100));
_commitQueue.stop();
for(int t=0;t<ZT_CONTROLLER_RETHINKDB_COMMIT_THREADS;++t)
_commitThread[t].join();
if (_membersDbWatcherConnection)
((R::Connection *)_membersDbWatcherConnection)->close();
if (_networksDbWatcherConnection)
((R::Connection *)_networksDbWatcherConnection)->close();
_membersDbWatcher.join();
_networksDbWatcher.join();
_heartbeatThread.join();
_onlineNotificationThread.join();
}
bool RethinkDB::waitForReady()
{
while (_ready > 0) {
if (!_waitNoticePrinted) {
_waitNoticePrinted = true;
fprintf(stderr,"[%s] NOTICE: %.10llx controller RethinkDB waiting for initial data download..." ZT_EOL_S,_timestr(),(unsigned long long)_myAddress.toInt());
}
_readyLock.lock();
_readyLock.unlock();
}
return true;
}
bool RethinkDB::isReady()
{
return ((_ready)&&(_connected));
}
void RethinkDB::save(nlohmann::json *orig,nlohmann::json &record)
{
if (!record.is_object()) // sanity check
return;
waitForReady();
if (orig) {
if (*orig != record) {
record["revision"] = OSUtils::jsonInt(record["revision"],0ULL) + 1;
_commitQueue.post(new nlohmann::json(record));
}
} else {
record["revision"] = 1;
_commitQueue.post(new nlohmann::json(record));
}
}
void RethinkDB::eraseNetwork(const uint64_t networkId)
{
char tmp2[24];
waitForReady();
Utils::hex(networkId,tmp2);
json *tmp = new json();
(*tmp)["id"] = tmp2;
(*tmp)["objtype"] = "_delete_network"; // pseudo-type, tells thread to delete network
_commitQueue.post(tmp);
}
void RethinkDB::eraseMember(const uint64_t networkId,const uint64_t memberId)
{
char tmp2[24];
json *tmp = new json();
waitForReady();
Utils::hex(networkId,tmp2);
(*tmp)["nwid"] = tmp2;
Utils::hex10(memberId,tmp2);
(*tmp)["id"] = tmp2;
(*tmp)["objtype"] = "_delete_member"; // pseudo-type, tells thread to delete network
_commitQueue.post(tmp);
}
void RethinkDB::nodeIsOnline(const uint64_t networkId,const uint64_t memberId,const InetAddress &physicalAddress)
{
std::lock_guard<std::mutex> l(_lastOnline_l);
std::pair<int64_t,InetAddress> &i = _lastOnline[std::pair<uint64_t,uint64_t>(networkId,memberId)];
i.first = OSUtils::now();
if (physicalAddress)
i.second = physicalAddress;
}
} // namespace ZeroTier
#endif // ZT_CONTROLLER_USE_RETHINKDB
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