void
PeerRecord::resetBackOff(VirtualClock& clock)
{
mNumFailures = 0;
mNextAttempt = mIsPreferred ? VirtualClock::time_point() : clock.now();
CLOG(DEBUG, "Overlay") << "PeerRecord: " << toString() << " backoff reset";
}
std::chrono::seconds
PeerRecord::computeBackoff(VirtualClock& clock)
{
int32 backoffCount = std::min<int32>(MAX_BACKOFF_EXPONENT, mNumFailures);
auto nsecs = std::chrono::seconds(
std::rand() % int(std::pow(2, backoffCount) * SECONDS_PER_BACKOFF) + 1);
mNextAttempt = clock.now() + nsecs;
return nsecs;
}
// under the Apache License, Version 2.0. See the COPYING file at the root
// of this distribution or at http://www.apache.org/licenses/LICENSE-2.0
#include "overlay/OverlayManager.h"
#include "overlay/test/LoopbackPeer.h"
#include "test/TestUtils.h"
#include "test/test.h"
#include "util/Timer.h"
#include <lib/catch.hpp>
#include <medida/metrics_registry.h>
using namespace stellar;
TEST_CASE("disconnect peer when overloaded", "[overlay][LoadManager]")
{
VirtualClock clock;
auto const& cfg1 = getTestConfig(0);
auto cfg2 = getTestConfig(1);
auto const& cfg3 = getTestConfig(2);
cfg2.RUN_STANDALONE = false;
cfg2.MINIMUM_IDLE_PERCENT = 90;
cfg2.TARGET_PEER_CONNECTIONS = 0;
cfg2.MAX_ADDITIONAL_PEER_CONNECTIONS = 3;
auto app1 = createTestApplication(clock, cfg1);
auto app2 = createTestApplication(clock, cfg2);
auto app3 = createTestApplication(clock, cfg3);
LoopbackPeerConnection conn(*app1, *app2);
LoopbackPeerConnection conn2(*app3, *app2);
ApplicationImpl::ApplicationImpl(VirtualClock& clock, Config const& cfg)
: mVirtualClock(clock)
, mConfig(cfg)
, mWorkerIOService(std::thread::hardware_concurrency())
, mWork(make_unique<asio::io_service::work>(mWorkerIOService))
, mWorkerThreads()
, mStopSignals(clock.getIOService(), SIGINT)
, mStopping(false)
, mStoppingTimer(*this)
, mMetrics(make_unique<medida::MetricsRegistry>())
, mAppStateCurrent(mMetrics->NewCounter({"app", "state", "current"}))
, mAppStateChanges(mMetrics->NewTimer({"app", "state", "changes"}))
, mLastStateChange(clock.now())
{
#ifdef SIGQUIT
mStopSignals.add(SIGQUIT);
#endif
#ifdef SIGTERM
mStopSignals.add(SIGTERM);
#endif
std::srand(static_cast<uint32>(clock.now().time_since_epoch().count()));
mNetworkID = sha256(mConfig.NETWORK_PASSPHRASE);
unsigned t = std::thread::hardware_concurrency();
LOG(DEBUG) << "Application constructing "
<< "(worker threads: " << t << ")";
mStopSignals.async_wait([this](asio::error_code const& ec, int sig)
{
if (!ec)
{
LOG(INFO) << "got signal " << sig
<< ", shutting down";
this->gracefulStop();
}
});
// These must be constructed _after_ because they frequently call back
// into App.getFoo() to get information / start up.
mDatabase = make_unique<Database>(*this);
mPersistentState = make_unique<PersistentState>(*this);
mTmpDirManager = make_unique<TmpDirManager>(cfg.TMP_DIR_PATH);
mOverlayManager = OverlayManager::create(*this);
mLedgerManager = LedgerManager::create(*this);
mHerder = Herder::create(*this);
mBucketManager = BucketManager::create(*this);
mHistoryManager = HistoryManager::create(*this);
mProcessManager = ProcessManager::create(*this);
mCommandHandler = make_unique<CommandHandler>(*this);
mWorkManager = WorkManager::create(*this);
while (t--)
{
mWorkerThreads.emplace_back([this, t]()
{
this->runWorkerThread(t);
});
}
LOG(DEBUG) << "Application constructed";
}
ApplicationImpl::ApplicationImpl(VirtualClock& clock, Config const& cfg)
: mState(Application::State::BOOTING_STATE)
, mVirtualClock(clock)
, mConfig(cfg)
, mWorkerIOService(std::thread::hardware_concurrency())
, mWork(make_unique<asio::io_service::work>(mWorkerIOService))
, mWorkerThreads()
, mStopSignals(clock.getIOService(), SIGINT)
{
#ifdef SIGQUIT
mStopSignals.add(SIGQUIT);
#endif
#ifdef SIGTERM
mStopSignals.add(SIGTERM);
#endif
unsigned t = std::thread::hardware_concurrency();
LOG(INFO) << "Application constructing "
<< "(worker threads: " << t << ")";
mStopSignals.async_wait([this](asio::error_code const& ec, int sig)
{
LOG(INFO) << "got signal " << sig
<< ", shutting down";
this->gracefulStop();
});
// These must be constructed _after_ because they frequently call back
// into App.getFoo() to get information / start up.
mMetrics = make_unique<medida::MetricsRegistry>();
mDatabase = make_unique<Database>(*this);
mPersistentState = make_unique<PersistentState>(*this);
if (mPersistentState->getState(PersistentState::kForceSCPOnNextLaunch) ==
"true")
{
mConfig.START_NEW_NETWORK = true;
}
// Initialize the db as early as possible, namely as soon as metrics,
// database and persistentState are instantiated.
if (mConfig.REBUILD_DB || mConfig.DATABASE == "sqlite3://:memory:")
{
mDatabase->initialize();
}
mTmpDirManager = make_unique<TmpDirManager>(cfg.TMP_DIR_PATH);
mOverlayManager = OverlayManager::create(*this);
mLedgerManager = LedgerManager::create(*this);
mHerder = Herder::create(*this);
mBucketManager = BucketManager::create(*this);
mHistoryManager = HistoryManager::create(*this);
mProcessManager = ProcessManager::create(*this);
mCommandHandler = make_unique<CommandHandler>(*this);
while (t--)
{
mWorkerThreads.emplace_back([this, t]()
{
this->runWorkerThread(t);
});
}
LOG(INFO) << "Application constructed";
}
void
fuzz(std::string const& filename, el::Level logLevel,
std::vector<std::string> const& metrics)
{
Logging::setFmt("<fuzz>", false);
Logging::setLogLevel(logLevel, nullptr);
LOG(INFO) << "Fuzzing stellar-core " << STELLAR_CORE_VERSION;
LOG(INFO) << "Fuzz input is in " << filename;
Config cfg1, cfg2;
cfg1.RUN_STANDALONE = true;
cfg1.ARTIFICIALLY_ACCELERATE_TIME_FOR_TESTING = true;
cfg1.LOG_FILE_PATH = "fuzz-app-1.log";
cfg1.TMP_DIR_PATH = "fuzz-tmp-1";
cfg1.BUCKET_DIR_PATH = "fuzz-buckets-1";
cfg2.RUN_STANDALONE = true;
cfg2.ARTIFICIALLY_ACCELERATE_TIME_FOR_TESTING = true;
cfg1.LOG_FILE_PATH = "fuzz-app-2.log";
cfg2.TMP_DIR_PATH = "fuzz-tmp-2";
cfg2.BUCKET_DIR_PATH = "fuzz-buckets-2";
CfgDirGuard g1(cfg1);
CfgDirGuard g2(cfg2);
restart:
{
VirtualClock clock;
Application::pointer app1 = Application::create(clock, cfg1);
Application::pointer app2 = Application::create(clock, cfg2);
LoopbackPeerConnection loop(*app1, *app2);
while (clock.crank(false) > 0)
;
XDRInputFileStream in;
in.open(filename);
StellarMessage msg;
size_t i = 0;
while (tryRead(in, msg))
{
++i;
if (msg.type() != HELLO)
{
LOG(INFO) << "Fuzzer injecting message " << i << ": "
<< msgSummary(msg);
loop.getAcceptor()->Peer::sendMessage(msg);
}
size_t iter = 20;
while (clock.crank(false) > 0 && iter-- > 0)
;
}
}
if (getenv("AFL_PERSISTENT") && persist_cnt++ < PERSIST_MAX)
{
#ifndef _WIN32
raise(SIGSTOP);
#endif
goto restart;
}
}
