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fetch_ut.cpp
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#include "fetch.h"
#include "config.h"
#include "test_conductor.h"
#include <cloud/blockstore/config/discovery.pb.h>
#include <cloud/blockstore/public/api/protos/discovery.pb.h>
#include <cloud/storage/core/libs/common/scheduler_test.h>
#include <cloud/storage/core/libs/common/timer.h>
#include <cloud/storage/core/libs/diagnostics/logging.h>
#include <cloud/storage/core/libs/diagnostics/monitoring.h>
#include <library/cpp/testing/unittest/registar.h>
#include <util/folder/tempdir.h>
#include <util/random/random.h>
#include <util/stream/file.h>
#include <util/string/printf.h>
namespace NCloud::NBlockStore::NDiscovery {
namespace {
////////////////////////////////////////////////////////////////////////////////
struct TEnv
{
TTempDir TempDir;
TDiscoveryConfigPtr Config;
std::unique_ptr<TFakeConductor> Conductor;
TString ConductorUrl;
ITimerPtr Timer;
std::shared_ptr<TTestScheduler> Scheduler;
TEnv(bool withConductor, bool withSecurePorts = false)
: Timer(CreateWallClockTimer())
, Scheduler(std::make_shared<TTestScheduler>())
{
NProto::TDiscoveryServiceConfig c;
c.SetInstanceListFile(TempDir.Path() / "instances.txt");
*c.AddConductorGroups() = "group1";
*c.AddConductorGroups() = "group2";
*c.AddConductorGroups() = "group3";
*c.AddConductorGroups() = "broken_group";
if (withConductor) {
int attempts = 10;
while (true) {
ui16 port = 1024 + RandomNumber<ui16>(65536 - 1024);
try {
ConductorUrl = Sprintf("http://*:%u/somepath/", port);
Conductor.reset(new TFakeConductor(port));
Conductor->ForkStart();
c.SetConductorApiUrl(ConductorUrl);
c.SetConductorInstancePort(1);
if (withSecurePorts) {
c.SetConductorSecureInstancePort(10);
}
break;
} catch (...) {
Cdbg << "failed to start conductor mock on port " << port
<< ", error: " << CurrentExceptionMessage() << Endl;
if (--attempts == 0) {
throw;
}
}
}
}
Config = std::make_shared<TDiscoveryConfig>(std::move(c));
}
};
} // namespace
////////////////////////////////////////////////////////////////////////////////
Y_UNIT_TEST_SUITE(FetchTest)
{
struct TInstanceSpec
{
TString Host;
ui16 Port;
};
using TInitInstanceSource =
std::function<void(const TVector<TInstanceSpec>& instances)>;
using TGetInstancePort = std::function<int(int)>;
void DoTestFetch(
IInstanceFetcher& fetcher,
const TInitInstanceSource& initInstanceSource,
bool withPorts)
{
const TVector<TInstanceSpec> stage1 = {
{"host1", 1},
{"host2", 2},
{"host3", 3},
{"host4", 4},
};
const TVector<TInstanceSpec> stage2 = {
{"host1", 1},
{"host3", 3},
{"host4", 4},
{"host5", 5},
{"host6", 6},
};
auto port = [=] (ui32 i) {
return withPorts ? i : 1;
};
fetcher.Start();
// initializing instance list
initInstanceSource(stage1);
// fetching instances for the first time
TInstanceList instances;
fetcher.FetchInstances(instances).Wait();
// order of newly added instances is unspecified
SortBy(
instances.Instances.begin(),
instances.Instances.end(),
[] (const TInstanceInfo& ii) {
return ii.Host;
}
);
// checking hosts:ports
UNIT_ASSERT_VALUES_EQUAL(4, instances.Instances.size());
UNIT_ASSERT_VALUES_EQUAL("host1", instances.Instances[0].Host);
UNIT_ASSERT_VALUES_EQUAL(port(1), instances.Instances[0].Port);
UNIT_ASSERT_VALUES_EQUAL("host2", instances.Instances[1].Host);
UNIT_ASSERT_VALUES_EQUAL(port(2), instances.Instances[1].Port);
UNIT_ASSERT_VALUES_EQUAL("host3", instances.Instances[2].Host);
UNIT_ASSERT_VALUES_EQUAL(port(3), instances.Instances[2].Port);
UNIT_ASSERT_VALUES_EQUAL("host4", instances.Instances[3].Host);
UNIT_ASSERT_VALUES_EQUAL(port(4), instances.Instances[3].Port);
// all new instances should be marked as unreachable
for (const auto& ii : instances.Instances) {
UNIT_ASSERT(ii.Status == TInstanceInfo::EStatus::Unreachable);
}
instances.Instances[0].Status = TInstanceInfo::EStatus::Reachable;
instances.Instances[0].BalancingScore = 0.2;
instances.Instances[2].Status = TInstanceInfo::EStatus::Reachable;
instances.Instances[2].BalancingScore = 0.1;
// deleting host2:2 and adding host5:5 and host6:6
initInstanceSource(stage2);
// refetching instances
fetcher.FetchInstances(instances).Wait();
// checking that existing instances are in the beginning of the
// list and that their relative order is untouched
UNIT_ASSERT_VALUES_EQUAL("host1", instances.Instances[0].Host);
UNIT_ASSERT_VALUES_EQUAL(port(1), instances.Instances[0].Port);
UNIT_ASSERT_VALUES_EQUAL("host3", instances.Instances[1].Host);
UNIT_ASSERT_VALUES_EQUAL(port(3), instances.Instances[1].Port);
UNIT_ASSERT_VALUES_EQUAL("host4", instances.Instances[2].Host);
UNIT_ASSERT_VALUES_EQUAL(port(4), instances.Instances[2].Port);
// order of newly added instances is unspecified
SortBy(
instances.Instances.begin(),
instances.Instances.end(),
[] (const TInstanceInfo& ii) {
return ii.Host;
}
);
UNIT_ASSERT_VALUES_EQUAL(5, instances.Instances.size());
// already existing instances should be kept intact
UNIT_ASSERT_VALUES_EQUAL("host1", instances.Instances[0].Host);
UNIT_ASSERT_VALUES_EQUAL(port(1), instances.Instances[0].Port);
UNIT_ASSERT_VALUES_EQUAL(0.2, instances.Instances[0].BalancingScore);
UNIT_ASSERT(instances.Instances[0].Status
== TInstanceInfo::EStatus::Reachable);
UNIT_ASSERT_VALUES_EQUAL("host3", instances.Instances[1].Host);
UNIT_ASSERT_VALUES_EQUAL(port(3), instances.Instances[1].Port);
UNIT_ASSERT_VALUES_EQUAL(0.1, instances.Instances[1].BalancingScore);
UNIT_ASSERT(instances.Instances[1].Status
== TInstanceInfo::EStatus::Reachable);
UNIT_ASSERT_VALUES_EQUAL("host4", instances.Instances[2].Host);
UNIT_ASSERT_VALUES_EQUAL(port(4), instances.Instances[2].Port);
UNIT_ASSERT_VALUES_EQUAL(0, instances.Instances[2].BalancingScore);
UNIT_ASSERT(instances.Instances[2].Status
== TInstanceInfo::EStatus::Unreachable);
// newly added instances should be marked as unreachable
UNIT_ASSERT_VALUES_EQUAL("host5", instances.Instances[3].Host);
UNIT_ASSERT_VALUES_EQUAL(port(5), instances.Instances[3].Port);
UNIT_ASSERT_VALUES_EQUAL(0, instances.Instances[3].BalancingScore);
UNIT_ASSERT(instances.Instances[3].Status
== TInstanceInfo::EStatus::Unreachable);
UNIT_ASSERT_VALUES_EQUAL("host6", instances.Instances[4].Host);
UNIT_ASSERT_VALUES_EQUAL(port(6), instances.Instances[4].Port);
UNIT_ASSERT_VALUES_EQUAL(0, instances.Instances[4].BalancingScore);
UNIT_ASSERT(instances.Instances[4].Status
== TInstanceInfo::EStatus::Unreachable);
fetcher.Stop();
}
void DoTestFetchSecure(
IInstanceFetcher& fetcher,
const TInitInstanceSource& initInstanceSource,
const TGetInstancePort& port)
{
const TVector<TInstanceSpec> stage1 = {
{"host1", 1},
{"host2", 2},
{"host3", 3},
{"host4", 4},
};
const TVector<TInstanceSpec> stage2 = {
{"host1", 1},
{"host3", 3},
{"host4", 4},
{"host5", 5},
{"host6", 6},
};
using TInstSpec = std::tuple<TStringBuf, int, double, TInstanceInfo::EStatus>;
auto checkInstances = [&] (auto& instances, std::initializer_list<TInstSpec> expected) {
UNIT_ASSERT_VALUES_EQUAL(instances.size(), expected.size());
SortBy(instances, [] (const auto& ii) {
return std::tie(ii.Host, ii.Port);
});
auto it = expected.begin();
for (const auto& ii : instances) {
UNIT_ASSERT_VALUES_EQUAL(std::get<0>(*it), ii.Host);
UNIT_ASSERT_VALUES_EQUAL(std::get<1>(*it), ii.Port);
UNIT_ASSERT(ii.IsSecurePort == ii.Port >= 10);
UNIT_ASSERT_VALUES_EQUAL(std::get<2>(*it), ii.BalancingScore);
UNIT_ASSERT(ii.Status == std::get<3>(*it));
++it;
}
};
fetcher.Start();
initInstanceSource(stage1);
TInstanceList instances;
fetcher.FetchInstances(instances).Wait();
checkInstances(instances.Instances, {
{"host1", port(1) , 0.0, TInstanceInfo::EStatus::Unreachable},
{"host1", port(10), 0.0, TInstanceInfo::EStatus::Unreachable},
{"host2", port(2) , 0.0, TInstanceInfo::EStatus::Unreachable},
{"host2", port(20), 0.0, TInstanceInfo::EStatus::Unreachable},
{"host3", port(3) , 0.0, TInstanceInfo::EStatus::Unreachable},
{"host3", port(30), 0.0, TInstanceInfo::EStatus::Unreachable},
{"host4", port(4) , 0.0, TInstanceInfo::EStatus::Unreachable},
{"host4", port(40), 0.0, TInstanceInfo::EStatus::Unreachable},
});
instances.Instances[0].Status = TInstanceInfo::EStatus::Reachable;
instances.Instances[0].BalancingScore = 0.4;
instances.Instances[1].Status = TInstanceInfo::EStatus::Reachable;
instances.Instances[1].BalancingScore = 0.3;
instances.Instances[4].Status = TInstanceInfo::EStatus::Reachable;
instances.Instances[4].BalancingScore = 0.2;
instances.Instances[5].Status = TInstanceInfo::EStatus::Reachable;
instances.Instances[5].BalancingScore = 0.1;
initInstanceSource(stage2);
fetcher.FetchInstances(instances).Wait();
UNIT_ASSERT_VALUES_EQUAL("host1", instances.Instances[0].Host);
UNIT_ASSERT_VALUES_EQUAL(port(1), instances.Instances[0].Port);
UNIT_ASSERT(!instances.Instances[0].IsSecurePort);
UNIT_ASSERT_VALUES_EQUAL("host1", instances.Instances[1].Host);
UNIT_ASSERT_VALUES_EQUAL(port(10), instances.Instances[1].Port);
UNIT_ASSERT(instances.Instances[1].IsSecurePort);
UNIT_ASSERT_VALUES_EQUAL("host3", instances.Instances[2].Host);
UNIT_ASSERT_VALUES_EQUAL(port(3), instances.Instances[2].Port);
UNIT_ASSERT(!instances.Instances[2].IsSecurePort);
UNIT_ASSERT_VALUES_EQUAL("host3", instances.Instances[3].Host);
UNIT_ASSERT_VALUES_EQUAL(port(30), instances.Instances[3].Port);
UNIT_ASSERT(instances.Instances[3].IsSecurePort);
UNIT_ASSERT_VALUES_EQUAL("host4", instances.Instances[4].Host);
UNIT_ASSERT_VALUES_EQUAL(port(4), instances.Instances[4].Port);
UNIT_ASSERT(!instances.Instances[4].IsSecurePort);
UNIT_ASSERT_VALUES_EQUAL("host4", instances.Instances[5].Host);
UNIT_ASSERT_VALUES_EQUAL(port(40), instances.Instances[5].Port);
UNIT_ASSERT(instances.Instances[5].IsSecurePort);
checkInstances(instances.Instances, {
{"host1", port(1) , 0.4, TInstanceInfo::EStatus::Reachable},
{"host1", port(10), 0.3, TInstanceInfo::EStatus::Reachable},
{"host3", port(3) , 0.2, TInstanceInfo::EStatus::Reachable},
{"host3", port(30), 0.1, TInstanceInfo::EStatus::Reachable},
{"host4", port(4) , 0.0, TInstanceInfo::EStatus::Unreachable},
{"host4", port(40), 0.0, TInstanceInfo::EStatus::Unreachable},
{"host5", port(5) , 0.0, TInstanceInfo::EStatus::Unreachable},
{"host5", port(50), 0.0, TInstanceInfo::EStatus::Unreachable},
{"host6", port(6) , 0.0, TInstanceInfo::EStatus::Unreachable},
{"host6", port(60), 0.0, TInstanceInfo::EStatus::Unreachable}
});
fetcher.Stop();
}
Y_UNIT_TEST(ShouldFetchFromFile)
{
TEnv env(false);
auto fetcher = CreateStaticInstanceFetcher(
env.Config,
CreateLoggingService("console"),
CreateMonitoringServiceStub()
);
DoTestFetch(
*fetcher,
[&] (const TVector<TInstanceSpec>& instanceSpecs) {
TOFStream of(env.Config->GetInstanceListFile());
for (const auto& x : instanceSpecs) {
of << x.Host << "\t" << x.Port << Endl;
}
},
true
);
}
Y_UNIT_TEST(ShouldFetchFromFileSecure)
{
TEnv env(false);
auto fetcher = CreateStaticInstanceFetcher(
env.Config,
CreateLoggingService("console"),
CreateMonitoringServiceStub()
);
DoTestFetchSecure(
*fetcher,
[&] (const TVector<TInstanceSpec>& instanceSpecs) {
TOFStream of(env.Config->GetInstanceListFile());
for (const auto& x : instanceSpecs) {
of << x.Host << "\t" << x.Port << "\t" << 10*x.Port << Endl;
}
},
[](int p) {
return p;
}
);
}
Y_UNIT_TEST(ShouldFetchFromConductor)
{
TEnv env(true);
auto fetcher = CreateConductorInstanceFetcher(
env.Config,
CreateLoggingService("console"),
CreateMonitoringServiceStub(),
env.Timer,
env.Scheduler
);
auto group = [] (const TString& host) {
return host <= "host2" ? "group1" : "group2";
};
DoTestFetch(
*fetcher,
[&] (const TVector<TInstanceSpec>& instanceSpecs) {
TVector<THostInfo> hostInfo;
for (const auto& x : instanceSpecs) {
hostInfo.push_back({group(x.Host), x.Host});
}
env.Conductor->SetHostInfo(std::move(hostInfo));
},
false
);
}
Y_UNIT_TEST(ShouldFetchFromConductorSecure) {
TEnv env(true, true);
auto fetcher = CreateConductorInstanceFetcher(
env.Config,
CreateLoggingService("console"),
CreateMonitoringServiceStub(),
env.Timer,
env.Scheduler
);
auto group = [] (const TString& host) {
return host <= "host2" ? "group1" : "group2";
};
DoTestFetchSecure(
*fetcher,
[&] (const TVector<TInstanceSpec>& instanceSpecs) {
TVector<THostInfo> hostInfo;
for (const auto& x : instanceSpecs) {
hostInfo.push_back({group(x.Host), x.Host});
}
env.Conductor->SetHostInfo(std::move(hostInfo));
},
[](int p) {
if (p >= 10) {
return 10;
}
return 1;
}
);
}
Y_UNIT_TEST(ShouldProperlyProcessConductorTimeouts)
{
TEnv env(true);
auto fetcher = CreateConductorInstanceFetcher(
env.Config,
CreateLoggingService("console"),
CreateMonitoringServiceStub(),
env.Timer,
env.Scheduler
);
fetcher->Start();
TVector<THostInfo> hostInfo = {
{"group1", "host1"},
{"group2", "host2"},
};
env.Conductor->SetHostInfo(hostInfo);
TInstanceList instances;
fetcher->FetchInstances(instances).Wait();
SortBy(
instances.Instances.begin(),
instances.Instances.end(),
[] (const TInstanceInfo& ii) {
return ii.Host;
}
);
UNIT_ASSERT_VALUES_EQUAL(2, instances.Instances.size());
UNIT_ASSERT_VALUES_EQUAL("host1", instances.Instances[0].Host);
UNIT_ASSERT_VALUES_EQUAL("host2", instances.Instances[1].Host);
env.Conductor->SetDrop("group2", true);
hostInfo[1].Host = "host22";
env.Conductor->SetHostInfo(hostInfo);
auto fetch2 = fetcher->FetchInstances(instances);
Sleep(TDuration::Seconds(1));
env.Scheduler->RunAllScheduledTasks();
fetch2.Wait();
SortBy(
instances.Instances.begin(),
instances.Instances.end(),
[] (const TInstanceInfo& ii) {
return ii.Host;
}
);
UNIT_ASSERT_VALUES_EQUAL(2, instances.Instances.size());
UNIT_ASSERT_VALUES_EQUAL("host1", instances.Instances[0].Host);
UNIT_ASSERT_VALUES_EQUAL("host2", instances.Instances[1].Host);
env.Conductor->SetDrop("group2", false);
auto fetch3 = fetcher->FetchInstances(instances);
fetch3.Wait();
SortBy(
instances.Instances.begin(),
instances.Instances.end(),
[] (const TInstanceInfo& ii) {
return ii.Host;
}
);
UNIT_ASSERT_VALUES_EQUAL(2, instances.Instances.size());
UNIT_ASSERT_VALUES_EQUAL("host1", instances.Instances[0].Host);
UNIT_ASSERT_VALUES_EQUAL("host22", instances.Instances[1].Host);
fetcher->Stop();
}
}
} // namespace NCloud::NBlockStore::NDiscovery