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#include "log.h"
#include <library/cpp/testing/unittest/registar.h>
#include <library/cpp/actors/testlib/test_runtime.h>
using namespace NMonitoring;
using namespace NActors;
using namespace NActors::NLog;
namespace {
const TString& ServiceToString(int) {
static const TString FAKE{"FAKE"};
return FAKE;
}
TIntrusivePtr<TSettings> DefaultSettings() {
auto loggerId = TActorId{0, "Logger"};
auto s = MakeIntrusive<TSettings>(loggerId, 0, EPriority::PRI_TRACE);
s->SetAllowDrop(false);
s->Append(0, 1, ServiceToString);
return s;
}
TIntrusivePtr<TSettings> DroppingSettings(ui64 timeThresholdMs) {
auto loggerId = TActorId{0, "Logger"};
auto s = MakeIntrusive<TSettings>(
loggerId,
0,
EPriority::PRI_TRACE,
EPriority::PRI_DEBUG,
(ui32)0,
timeThresholdMs);
s->Append(0, 1, ServiceToString);
return s;
}
class TMockBackend: public TLogBackend {
public:
using TWriteImpl = std::function<void(const TLogRecord&)>;
using TReopenImpl = std::function<void()>;
static void REOPEN_NOP() { }
TMockBackend(TWriteImpl writeImpl, TReopenImpl reopenImpl = REOPEN_NOP)
: WriteImpl_{writeImpl}
, ReopenImpl_{reopenImpl}
{
}
void WriteData(const TLogRecord& r) override {
WriteImpl_(r);
}
void ReopenLog() override { }
void SetWriteImpl(TWriteImpl writeImpl) {
WriteImpl_ = writeImpl;
}
private:
TWriteImpl WriteImpl_;
TReopenImpl ReopenImpl_;
};
void ThrowAlways(const TLogRecord&) {
ythrow yexception();
};
struct TFixture {
TFixture(
TIntrusivePtr<TSettings> settings,
TMockBackend::TWriteImpl writeImpl = ThrowAlways)
{
Runtime.Initialize();
LogBackend.reset(new TMockBackend{writeImpl});
LoggerActor = Runtime.Register(new TLoggerActor{settings, LogBackend, Counters});
Runtime.SetScheduledEventFilter([] (auto&&, auto&&, auto&&, auto) {
return false;
});
}
TFixture(TMockBackend::TWriteImpl writeImpl = ThrowAlways)
: TFixture(DefaultSettings(), writeImpl)
{}
void WriteLog() {
Runtime.Send(new IEventHandle{LoggerActor, {}, new TEvLog(TInstant::Zero(), TLevel{EPrio::Emerg}, 0, "foo")});
}
void WriteLog(TInstant ts) {
Runtime.Send(new IEventHandle{LoggerActor, {}, new TEvLog(ts, TLevel{EPrio::Emerg}, 0, "foo")});
}
void Wakeup() {
Runtime.Send(new IEventHandle{LoggerActor, {}, new TEvents::TEvWakeup});
}
TIntrusivePtr<TDynamicCounters> Counters{MakeIntrusive<TDynamicCounters>()};
std::shared_ptr<TMockBackend> LogBackend;
TActorId LoggerActor;
TTestActorRuntimeBase Runtime;
};
}
Y_UNIT_TEST_SUITE(TLoggerActorTest) {
Y_UNIT_TEST(NoCrashOnWriteFailure) {
TFixture test;
test.WriteLog();
// everything is okay as long as we get here
}
Y_UNIT_TEST(SubsequentWritesAreIgnored) {
size_t count{0};
auto countWrites = [&count] (auto&& r) {
count++;
ThrowAlways(r);
};
TFixture test{countWrites};
test.WriteLog();
UNIT_ASSERT_VALUES_EQUAL(count, 1);
// at this point we should have started dropping messages
for (auto i = 0; i < 5; ++i) {
test.WriteLog();
}
UNIT_ASSERT_VALUES_EQUAL(count, 1);
}
Y_UNIT_TEST(LoggerCanRecover) {
TFixture test;
test.WriteLog();
TVector<TString> messages;
auto acceptWrites = [&] (const TLogRecord& r) {
messages.emplace_back(r.Data, r.Len);
};
auto scheduled = test.Runtime.CaptureScheduledEvents();
UNIT_ASSERT_VALUES_EQUAL(scheduled.size(), 1);
test.LogBackend->SetWriteImpl(acceptWrites);
test.Wakeup();
const auto COUNT = 10;
for (auto i = 0; i < COUNT; ++i) {
test.WriteLog();
}
UNIT_ASSERT_VALUES_EQUAL(messages.size(), COUNT);
}
Y_UNIT_TEST(ShouldObeyTimeThresholdMsWhenOverloaded) {
TFixture test{DroppingSettings(5000)};
TVector<TString> messages;
auto acceptWrites = [&] (const TLogRecord& r) {
messages.emplace_back(r.Data, r.Len);
};
test.LogBackend->SetWriteImpl(acceptWrites);
test.Wakeup();
const auto COUNT = 11;
for (auto i = 0; i < COUNT; ++i) {
test.WriteLog();
}
UNIT_ASSERT_VALUES_EQUAL(messages.size(), COUNT);
test.Runtime.AdvanceCurrentTime(TDuration::Seconds(20));
auto now = test.Runtime.GetCurrentTime();
test.WriteLog(now - TDuration::Seconds(5));
UNIT_ASSERT_VALUES_EQUAL(messages.size(), COUNT + 1);
test.WriteLog(now - TDuration::Seconds(6));
UNIT_ASSERT_VALUES_EQUAL(messages.size(), COUNT + 1);
}
}
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