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// Copyright Epic Games, Inc. All Rights Reserved.
#include <zencore/compactbinarybuilder.h>
#include <zencore/compactbinaryvalidation.h>
#include <zencore/config.h>
#include <zencore/except.h>
#include <zencore/filesystem.h>
#include <zencore/fmtutils.h>
#include <zencore/logging.h>
#include <zencore/memory/fmalloc.h>
#include <zencore/memory/llm.h>
#include <zencore/memory/memory.h>
#include <zencore/memory/memorytrace.h>
#include <zencore/memory/newdelete.h>
#include <zencore/scopeguard.h>
#include <zencore/sentryintegration.h>
#include <zencore/session.h>
#include <zencore/string.h>
#include <zencore/thread.h>
#include <zencore/trace.h>
#include <zenutil/service.h>
#include "diag/logging.h"
#include "storage/storageconfig.h"
#include "storage/zenstorageserver.h"
#if ZEN_PLATFORM_WINDOWS
# include <zencore/windows.h>
# include <zenutil/windows/windowsservice.h>
#endif
//////////////////////////////////////////////////////////////////////////
// We don't have any doctest code in this file but this is needed to bring
// in some shared code into the executable
#if ZEN_WITH_TESTS
# define ZEN_TEST_WITH_RUNNER 1
# include <zencore/testing.h>
#endif
namespace zen::utils {
std::atomic_uint32_t SignalCounter[NSIG] = {0};
static void
SignalCallbackHandler(int SigNum)
{
if (SigNum >= 0 && SigNum < NSIG)
{
SignalCounter[SigNum].fetch_add(1);
}
}
} // namespace zen::utils
namespace zen {
using namespace std::literals;
//////////////////////////////////////////////////////////////////////////
#if ZEN_PLATFORM_WINDOWS
template<class T>
class ZenWindowsService : public WindowsService
{
public:
ZenWindowsService(typename T::Config& ServerOptions) : m_EntryPoint(ServerOptions) {}
ZenWindowsService(const ZenWindowsService&) = delete;
ZenWindowsService& operator=(const ZenWindowsService&) = delete;
virtual int Run() override { return m_EntryPoint.Run(); }
private:
T m_EntryPoint;
};
#endif // ZEN_PLATFORM_WINDOWS
} // namespace zen
//////////////////////////////////////////////////////////////////////////
namespace zen {
template<class Main>
int
AppMain(int argc, char* argv[])
{
using namespace std::literals;
try
{
typename Main::Config ServerOptions;
#if ZEN_WITH_TRACE
TraceInit("zenserver");
ServerOptions.HasTraceCommandlineOptions = GetTraceOptionsFromCommandline(/* out */ ServerOptions.TraceOptions);
if (ServerOptions.HasTraceCommandlineOptions)
{
TraceConfigure(ServerOptions.TraceOptions);
}
#endif // ZEN_WITH_TRACE
{
typename Main::Configurator Configurator(ServerOptions);
Configurator.Configure(argc, argv);
}
if (ServerOptions.Detach)
{
#if ZEN_PLATFORM_LINUX | ZEN_PLATFORM_MAC
// Detach ourselves from any parent process
setsid();
#endif
}
LimitHardwareConcurrency(ServerOptions.CoreLimit);
std::string_view DeleteReason;
if (ServerOptions.IsCleanStart)
{
DeleteReason = "clean start requested"sv;
}
else if (!ServerOptions.BaseSnapshotDir.empty())
{
DeleteReason = "will initialize state from base snapshot"sv;
}
if (!DeleteReason.empty())
{
if (IsDir(ServerOptions.DataDir))
{
ZEN_CONSOLE_INFO("Deleting files from '{}' ({})", ServerOptions.DataDir, DeleteReason);
DeleteDirectories(ServerOptions.DataDir);
}
}
if (!IsDir(ServerOptions.DataDir))
{
ServerOptions.IsFirstRun = true;
CreateDirectories(ServerOptions.DataDir);
}
if (!ServerOptions.BaseSnapshotDir.empty())
{
ZEN_CONSOLE_INFO("Copying snapshot from '{}' into '{}", ServerOptions.BaseSnapshotDir, ServerOptions.DataDir);
CopyTree(ServerOptions.BaseSnapshotDir, ServerOptions.DataDir, {.EnableClone = true});
}
ZEN_MEMSCOPE(GetZenserverTag());
#if ZEN_PLATFORM_WINDOWS
if (ServerOptions.InstallService)
{
WindowsService::Install();
std::exit(0);
}
if (ServerOptions.UninstallService)
{
WindowsService::Delete();
std::exit(0);
}
ZenWindowsService<Main> App(ServerOptions);
return App.ServiceMain();
#else
if (ServerOptions.InstallService || ServerOptions.UninstallService)
{
throw std::runtime_error("Service mode is not supported on this platform");
}
Main App(ServerOptions);
return App.Run();
#endif
}
catch (const OptionParseException& ParseEx)
{
// The parsing error already outputs all the details so no need to output the command line here
fprintf(stderr, ZEN_APP_NAME " ERROR: %s\n", ParseEx.what());
return 1;
}
catch (const AssertException& AssertEx)
{
fprintf(stderr, ZEN_APP_NAME " ERROR: Caught assert exception in main: '%s'", AssertEx.FullDescription().c_str());
return 1;
}
catch (const std::exception& Ex)
{
fprintf(stderr, ZEN_APP_NAME " ERROR: Caught exception in main: '%s'", Ex.what());
return 1;
}
}
} // namespace zen
//////////////////////////////////////////////////////////////////////////
#if ZEN_WITH_TESTS
int
test_main(int argc, char** argv)
{
zen::logging::InitializeLogging();
zen::logging::SetLogLevel(zen::logging::level::Debug);
zen::MaximizeOpenFileCount();
return ZEN_RUN_TESTS(argc, argv);
}
#endif
int
main(int argc, char* argv[])
{
using namespace zen;
if (argc >= 2)
{
if (argv[1] == "test"sv)
{
#if ZEN_WITH_TESTS
return test_main(argc, argv);
#else
fprintf(stderr, "test option not available in release mode!\n");
exit(5);
#endif
}
}
signal(SIGINT, utils::SignalCallbackHandler);
signal(SIGTERM, utils::SignalCallbackHandler);
#if ZEN_PLATFORM_LINUX
IgnoreChildSignals();
#endif
return AppMain<ZenStorageServerMain>(argc, argv);
}
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