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server_test.cc
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server_test.cc
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#include <algorithm>
#include <memory>
#include <vector>
#include "envoy/common/scope_tracker.h"
#include "envoy/config/core/v3/base.pb.h"
#include "envoy/network/exception.h"
#include "envoy/server/bootstrap_extension_config.h"
#include "envoy/server/fatal_action_config.h"
#include "source/common/common/assert.h"
#include "source/common/network/address_impl.h"
#include "source/common/network/listen_socket_impl.h"
#include "source/common/network/socket_option_impl.h"
#include "source/common/protobuf/protobuf.h"
#include "source/common/thread_local/thread_local_impl.h"
#include "source/common/version/version.h"
#include "source/server/instance_impl.h"
#include "source/server/process_context_impl.h"
#include "test/common/config/dummy_config.pb.h"
#include "test/common/stats/stat_test_utility.h"
#include "test/config/v2_link_hacks.h"
#include "test/integration/server.h"
#include "test/mocks/common.h"
#include "test/mocks/server/bootstrap_extension_factory.h"
#include "test/mocks/server/fatal_action_factory.h"
#include "test/mocks/server/hot_restart.h"
#include "test/mocks/server/instance.h"
#include "test/mocks/server/options.h"
#include "test/mocks/server/overload_manager.h"
#include "test/mocks/stats/mocks.h"
#include "test/test_common/environment.h"
#include "test/test_common/logging.h"
#include "test/test_common/registry.h"
#include "test/test_common/simulated_time_system.h"
#include "test/test_common/test_runtime.h"
#include "test/test_common/test_time.h"
#include "test/test_common/utility.h"
#include "absl/synchronization/notification.h"
#include "gtest/gtest.h"
#include "openssl/crypto.h"
using testing::_;
using testing::Assign;
using testing::HasSubstr;
using testing::InSequence;
using testing::Invoke;
using testing::InvokeWithoutArgs;
using testing::Return;
using testing::SaveArg;
using testing::StrictMock;
namespace Envoy {
namespace Server {
namespace {
TEST(ServerInstanceUtil, flushHelper) {
InSequence s;
NiceMock<Upstream::MockClusterManager> cm;
Stats::TestUtil::TestStore store;
Event::SimulatedTimeSystem time_system;
Stats::Counter& c = store.counter("hello");
c.inc();
store.gauge("world", Stats::Gauge::ImportMode::Accumulate).set(5);
store.histogram("histogram", Stats::Histogram::Unit::Unspecified);
store.textReadout("text").set("is important");
std::list<Stats::SinkPtr> sinks;
InstanceUtil::flushMetricsToSinks(sinks, store, cm, time_system);
// Make sure that counters have been latched even if there are no sinks.
EXPECT_EQ(1UL, c.value());
EXPECT_EQ(0, c.latch());
Stats::MockSink* sink = new StrictMock<Stats::MockSink>();
sinks.emplace_back(sink);
EXPECT_CALL(*sink, flush(_)).WillOnce(Invoke([](Stats::MetricSnapshot& snapshot) {
ASSERT_EQ(snapshot.counters().size(), 1);
EXPECT_EQ(snapshot.counters()[0].counter_.get().name(), "hello");
EXPECT_EQ(snapshot.counters()[0].delta_, 1);
ASSERT_EQ(snapshot.gauges().size(), 1);
EXPECT_EQ(snapshot.gauges()[0].get().name(), "world");
EXPECT_EQ(snapshot.gauges()[0].get().value(), 5);
ASSERT_EQ(snapshot.textReadouts().size(), 1);
EXPECT_EQ(snapshot.textReadouts()[0].get().name(), "text");
EXPECT_EQ(snapshot.textReadouts()[0].get().value(), "is important");
}));
c.inc();
InstanceUtil::flushMetricsToSinks(sinks, store, cm, time_system);
// Histograms don't currently work with the isolated store so test those with a mock store.
NiceMock<Stats::MockStore> mock_store;
Stats::ParentHistogramSharedPtr parent_histogram(new Stats::MockParentHistogram());
std::vector<Stats::ParentHistogramSharedPtr> parent_histograms = {parent_histogram};
ON_CALL(mock_store, forEachSinkedHistogram)
.WillByDefault([&](std::function<void(std::size_t)> f_size,
std::function<void(Stats::ParentHistogram&)> f_stat) {
if (f_size != nullptr) {
f_size(parent_histograms.size());
}
for (auto& histogram : parent_histograms) {
f_stat(*histogram);
}
});
EXPECT_CALL(*sink, flush(_)).WillOnce(Invoke([](Stats::MetricSnapshot& snapshot) {
EXPECT_TRUE(snapshot.counters().empty());
EXPECT_TRUE(snapshot.gauges().empty());
EXPECT_EQ(snapshot.histograms().size(), 1);
EXPECT_TRUE(snapshot.textReadouts().empty());
}));
InstanceUtil::flushMetricsToSinks(sinks, mock_store, cm, time_system);
}
TEST(ServerInstanceUtil, flushImportModeUninitializedGauges) {
InSequence s;
NiceMock<Upstream::MockClusterManager> cm;
Stats::TestUtil::TestStore store;
Event::SimulatedTimeSystem time_system;
Stats::Counter& c = store.counter("hello");
c.inc();
store.gauge("world", Stats::Gauge::ImportMode::Accumulate).set(5);
store.gauge("again", Stats::Gauge::ImportMode::Uninitialized).set(10);
std::list<Stats::SinkPtr> sinks;
InstanceUtil::flushMetricsToSinks(sinks, store, cm, time_system);
// Make sure that counters have been latched even if there are no sinks.
EXPECT_EQ(1UL, c.value());
EXPECT_EQ(0, c.latch());
Stats::MockSink* sink = new StrictMock<Stats::MockSink>();
sinks.emplace_back(sink);
EXPECT_CALL(*sink, flush(_)).WillOnce(Invoke([](Stats::MetricSnapshot& snapshot) {
ASSERT_EQ(snapshot.counters().size(), 1);
EXPECT_EQ(snapshot.counters()[0].counter_.get().name(), "hello");
EXPECT_EQ(snapshot.counters()[0].delta_, 1);
ASSERT_EQ(snapshot.gauges().size(), 2);
auto world_it = std::find_if(snapshot.gauges().begin(), snapshot.gauges().end(),
[](const std::reference_wrapper<const Stats::Gauge>& gauge) {
return gauge.get().name().compare("world") == 0;
});
ASSERT_TRUE(world_it != snapshot.gauges().end());
EXPECT_EQ(world_it->get().value(), 5);
auto again_it = std::find_if(snapshot.gauges().begin(), snapshot.gauges().end(),
[](const std::reference_wrapper<const Stats::Gauge>& gauge) {
return gauge.get().name().compare("again") == 0;
});
ASSERT_TRUE(again_it != snapshot.gauges().end());
EXPECT_EQ(again_it->get().value(), 10);
ASSERT_EQ(snapshot.textReadouts().size(), 0);
}));
c.inc();
InstanceUtil::flushMetricsToSinks(sinks, store, cm, time_system);
}
class RunHelperTest : public testing::Test {
public:
RunHelperTest() {
InSequence s;
#ifndef WIN32
sigterm_ = new Event::MockSignalEvent(&dispatcher_);
sigint_ = new Event::MockSignalEvent(&dispatcher_);
sigusr1_ = new Event::MockSignalEvent(&dispatcher_);
sighup_ = new Event::MockSignalEvent(&dispatcher_);
#endif
EXPECT_CALL(overload_manager_, start());
EXPECT_CALL(cm_, setInitializedCb(_)).WillOnce(SaveArg<0>(&cm_init_callback_));
ON_CALL(server_, shutdown()).WillByDefault(Assign(&shutdown_, true));
helper_ = std::make_unique<RunHelper>(server_, options_, dispatcher_, cm_, access_log_manager_,
init_manager_, overload_manager_, null_overload_manager_,
[this] { start_workers_.ready(); });
}
NiceMock<MockInstance> server_;
testing::NiceMock<MockOptions> options_;
NiceMock<Event::MockDispatcher> dispatcher_;
NiceMock<Upstream::MockClusterManager> cm_;
NiceMock<AccessLog::MockAccessLogManager> access_log_manager_;
NiceMock<MockOverloadManager> overload_manager_;
NiceMock<MockOverloadManager> null_overload_manager_;
Init::ManagerImpl init_manager_{""};
ReadyWatcher start_workers_;
std::unique_ptr<RunHelper> helper_;
std::function<void()> cm_init_callback_;
#ifndef WIN32
Event::MockSignalEvent* sigterm_;
Event::MockSignalEvent* sigint_;
Event::MockSignalEvent* sigusr1_;
Event::MockSignalEvent* sighup_;
#endif
bool shutdown_ = false;
};
TEST_F(RunHelperTest, Normal) {
EXPECT_CALL(start_workers_, ready());
cm_init_callback_();
}
// no signals on Windows
#ifndef WIN32
TEST_F(RunHelperTest, ShutdownBeforeCmInitialize) {
EXPECT_CALL(start_workers_, ready()).Times(0);
sigterm_->callback_();
EXPECT_CALL(server_, isShutdown()).WillOnce(Return(shutdown_));
cm_init_callback_();
}
#endif
// no signals on Windows
#ifndef WIN32
TEST_F(RunHelperTest, ShutdownBeforeInitManagerInit) {
EXPECT_CALL(start_workers_, ready()).Times(0);
Init::ExpectableTargetImpl target;
init_manager_.add(target);
EXPECT_CALL(target, initialize());
cm_init_callback_();
sigterm_->callback_();
EXPECT_CALL(server_, isShutdown()).WillOnce(Return(shutdown_));
target.ready();
}
#endif
class InitializingInitManager : public Init::ManagerImpl {
public:
InitializingInitManager(absl::string_view name) : Init::ManagerImpl(name) {}
State state() const override { return State::Initializing; }
};
// Class creates minimally viable server instance for testing.
class ServerInstanceImplTestBase {
protected:
void initialize(const std::string& bootstrap_path) { initialize(bootstrap_path, false); }
void initialize(const std::string& bootstrap_path, const bool use_intializing_instance) {
initialize(bootstrap_path, use_intializing_instance, hooks_);
}
void initialize(const std::string& bootstrap_path, const bool use_intializing_instance,
ListenerHooks& hooks) {
if (options_.config_path_.empty()) {
options_.config_path_ = TestEnvironment::temporaryFileSubstitute(
bootstrap_path, {{"upstream_0", 0}, {"upstream_1", 0}}, version_);
}
thread_local_ = std::make_unique<ThreadLocal::InstanceImpl>();
if (process_object_ != nullptr) {
process_context_ = std::make_unique<ProcessContextImpl>(*process_object_);
}
init_manager_ = use_intializing_instance ? std::make_unique<InitializingInitManager>("Server")
: std::make_unique<Init::ManagerImpl>("Server");
server_ = std::make_unique<InstanceImpl>(
*init_manager_, options_, time_system_, hooks, restart_, stats_store_, fakelock_,
std::make_unique<NiceMock<Random::MockRandomGenerator>>(), *thread_local_,
Thread::threadFactoryForTest(), Filesystem::fileSystemForTest(),
std::move(process_context_));
server_->initialize(std::make_shared<Network::Address::Ipv4Instance>("127.0.0.1"),
component_factory_);
EXPECT_TRUE(server_->api().fileSystem().fileExists(std::string(Platform::null_device_path)));
}
void initializeWithHealthCheckParams(const std::string& bootstrap_path, const double timeout,
const double interval) {
options_.config_path_ = TestEnvironment::temporaryFileSubstitute(
bootstrap_path,
{{"health_check_timeout", fmt::format("{}", timeout).c_str()},
{"health_check_interval", fmt::format("{}", interval).c_str()}},
TestEnvironment::PortMap{}, version_);
thread_local_ = std::make_unique<ThreadLocal::InstanceImpl>();
init_manager_ = std::make_unique<Init::ManagerImpl>("Server");
server_ = std::make_unique<InstanceImpl>(
*init_manager_, options_, time_system_, hooks_, restart_, stats_store_, fakelock_,
std::make_unique<NiceMock<Random::MockRandomGenerator>>(), *thread_local_,
Thread::threadFactoryForTest(), Filesystem::fileSystemForTest(), nullptr);
server_->initialize(std::make_shared<Network::Address::Ipv4Instance>("127.0.0.1"),
component_factory_);
EXPECT_TRUE(server_->api().fileSystem().fileExists(std::string(Platform::null_device_path)));
}
Thread::ThreadPtr startTestServer(const std::string& bootstrap_path,
const bool use_intializing_instance) {
absl::Notification started;
absl::Notification post_init;
auto server_thread = Thread::threadFactoryForTest().createThread([&] {
initialize(bootstrap_path, use_intializing_instance);
auto startup_handle = server_->registerCallback(ServerLifecycleNotifier::Stage::Startup,
[&] { started.Notify(); });
auto post_init_handle = server_->registerCallback(ServerLifecycleNotifier::Stage::PostInit,
[&] { post_init.Notify(); });
auto shutdown_handle = server_->registerCallback(ServerLifecycleNotifier::Stage::ShutdownExit,
[&](Event::PostCb) { FAIL(); });
shutdown_handle = nullptr; // unregister callback
server_->run();
startup_handle = nullptr;
post_init_handle = nullptr;
server_ = nullptr;
thread_local_ = nullptr;
});
started.WaitForNotification();
post_init.WaitForNotification();
return server_thread;
}
void expectCorrectBuildVersion(const envoy::config::core::v3::BuildVersion& build_version) {
std::string version_string =
absl::StrCat(build_version.version().major_number(), ".",
build_version.version().minor_number(), ".", build_version.version().patch());
const auto& fields = build_version.metadata().fields();
if (fields.find(BuildVersionMetadataKeys::get().BuildLabel) != fields.end()) {
absl::StrAppend(&version_string, "-",
fields.at(BuildVersionMetadataKeys::get().BuildLabel).string_value());
}
EXPECT_EQ(BUILD_VERSION_NUMBER, version_string);
}
Network::Address::IpVersion version_;
testing::NiceMock<MockOptions> options_;
DefaultListenerHooks hooks_;
testing::NiceMock<MockHotRestart> restart_;
ThreadLocal::InstanceImplPtr thread_local_;
Stats::TestIsolatedStoreImpl stats_store_;
Thread::MutexBasicLockable fakelock_;
TestComponentFactory component_factory_;
Event::GlobalTimeSystem time_system_;
ProcessObject* process_object_ = nullptr;
std::unique_ptr<ProcessContextImpl> process_context_;
std::unique_ptr<Init::Manager> init_manager_;
std::unique_ptr<InstanceImpl> server_;
};
class ServerInstanceImplTest : public ServerInstanceImplTestBase,
public testing::TestWithParam<Network::Address::IpVersion> {
protected:
ServerInstanceImplTest() { version_ = GetParam(); }
};
// Custom StatsSink that just increments a counter when flush is called.
class CustomStatsSink : public Stats::Sink {
public:
CustomStatsSink(Stats::Scope& scope) : stats_flushed_(scope.counterFromString("stats.flushed")) {}
// Stats::Sink
void flush(Stats::MetricSnapshot&) override { stats_flushed_.inc(); }
void onHistogramComplete(const Stats::Histogram&, uint64_t) override {}
private:
Stats::Counter& stats_flushed_;
};
// Custom StatsSinkFactory that creates CustomStatsSink.
class CustomStatsSinkFactory : public Server::Configuration::StatsSinkFactory {
public:
// StatsSinkFactory
Stats::SinkPtr createStatsSink(const Protobuf::Message&,
Server::Configuration::ServerFactoryContext& server) override {
return std::make_unique<CustomStatsSink>(server.scope());
}
ProtobufTypes::MessagePtr createEmptyConfigProto() override {
// Using Struct instead of a custom per-filter empty config proto
// This is only allowed in tests.
return ProtobufTypes::MessagePtr{new Envoy::ProtobufWkt::Struct()};
}
std::string name() const override { return "envoy.custom_stats_sink"; }
};
// CustomListenerHooks is used for synchronization between test thread and server thread.
class CustomListenerHooks : public DefaultListenerHooks {
public:
CustomListenerHooks(std::function<void()> workers_started_cb)
: on_workers_started_cb_(workers_started_cb) {}
void onWorkersStarted() override { on_workers_started_cb_(); }
private:
std::function<void()> on_workers_started_cb_;
};
INSTANTIATE_TEST_SUITE_P(IpVersions, ServerInstanceImplTest,
testing::ValuesIn(TestEnvironment::getIpVersionsForTest()),
TestUtility::ipTestParamsToString);
// The finalize() of Http::CustomInlineHeaderRegistry will be called When InstanceImpl is
// instantiated. For this reason, the test case for inline headers must precede all other test
// cases.
// Test the case where inline headers contain names that cannot be registered as inline headers.
TEST_P(ServerInstanceImplTest, WithErrorCustomInlineHeaders) {
EXPECT_THROW_WITH_MESSAGE(
initialize("test/server/test_data/server/bootstrap_inline_headers_error.yaml"),
EnvoyException, "Header set-cookie cannot be registered as an inline header.");
}
TEST_P(ServerInstanceImplTest, WithDeathCustomInlineHeaders) {
#if !defined(NDEBUG)
// The finalize() of Http::CustomInlineHeaderRegistry will be called after the first successful
// instantiation of InstanceImpl. If InstanceImpl is instantiated again and the inline header is
// registered again, the assertion will be triggered.
EXPECT_DEATH(
{
initialize("test/server/test_data/server/bootstrap_inline_headers.yaml");
initialize("test/server/test_data/server/bootstrap_inline_headers.yaml");
},
"");
#endif // !defined(NDEBUG)
}
// Test whether the custom inline headers can be registered correctly.
TEST_P(ServerInstanceImplTest, WithCustomInlineHeaders) {
static bool is_registered = false;
if (!is_registered) {
// Avoid repeated registration of custom inline headers in the current process after the
// finalize() of Http::CustomInlineHeaderRegistry has already been called.
EXPECT_NO_THROW(initialize("test/server/test_data/server/bootstrap_inline_headers.yaml"));
is_registered = true;
}
EXPECT_TRUE(
Http::CustomInlineHeaderRegistry::getInlineHeader<Http::RequestHeaderMap::header_map_type>(
Http::LowerCaseString("test1"))
.has_value());
EXPECT_TRUE(
Http::CustomInlineHeaderRegistry::getInlineHeader<Http::RequestTrailerMap::header_map_type>(
Http::LowerCaseString("test2"))
.has_value());
EXPECT_TRUE(
Http::CustomInlineHeaderRegistry::getInlineHeader<Http::ResponseHeaderMap::header_map_type>(
Http::LowerCaseString("test3"))
.has_value());
EXPECT_TRUE(
Http::CustomInlineHeaderRegistry::getInlineHeader<Http::ResponseTrailerMap::header_map_type>(
Http::LowerCaseString("test4"))
.has_value());
{
Http::TestRequestHeaderMapImpl headers{
{"test1", "test1_value1"},
{"test1", "test1_value2"},
{"test3", "test3_value1"},
{"test3", "test3_value2"},
};
// 'test1' is registered as the inline request header.
auto test1_headers = headers.get(Http::LowerCaseString("test1"));
EXPECT_EQ(1, test1_headers.size());
EXPECT_EQ("test1_value1,test1_value2", headers.get_("test1"));
// 'test3' is not registered as an inline request header.
auto test3_headers = headers.get(Http::LowerCaseString("test3"));
EXPECT_EQ(2, test3_headers.size());
EXPECT_EQ("test3_value1", headers.get_("test3"));
}
{
Http::TestResponseHeaderMapImpl headers{
{"test1", "test1_value1"},
{"test1", "test1_value2"},
{"test3", "test3_value1"},
{"test3", "test3_value2"},
};
// 'test1' is not registered as the inline response header.
auto test1_headers = headers.get(Http::LowerCaseString("test1"));
EXPECT_EQ(2, test1_headers.size());
EXPECT_EQ("test1_value1", headers.get_("test1"));
// 'test3' is registered as an inline response header.
auto test3_headers = headers.get(Http::LowerCaseString("test3"));
EXPECT_EQ(1, test3_headers.size());
EXPECT_EQ("test3_value1,test3_value2", headers.get_("test3"));
}
}
// Validates that server stats are flushed even when server is stuck with initialization.
TEST_P(ServerInstanceImplTest, StatsFlushWhenServerIsStillInitializing) {
CustomStatsSinkFactory factory;
Registry::InjectFactory<Server::Configuration::StatsSinkFactory> registered(factory);
auto server_thread =
startTestServer("test/server/test_data/server/stats_sink_bootstrap.yaml", true);
// Wait till stats are flushed to custom sink and validate that the actual flush happens.
EXPECT_TRUE(TestUtility::waitForCounterEq(stats_store_, "stats.flushed", 1, time_system_));
EXPECT_EQ(3L, TestUtility::findGauge(stats_store_, "server.state")->value());
EXPECT_EQ(Init::Manager::State::Initializing, server_->initManager().state());
EXPECT_TRUE(server_->enableReusePortDefault());
server_->dispatcher().post([&] { server_->shutdown(); });
server_thread->join();
}
// Validates that the "server.version" is updated with stats_server_version_override from bootstrap.
TEST_P(ServerInstanceImplTest, ProxyVersionOveridesFromBootstrap) {
auto server_thread =
startTestServer("test/server/test_data/server/proxy_version_bootstrap.yaml", true);
EXPECT_EQ(100012001, TestUtility::findGauge(stats_store_, "server.version")->value());
server_->dispatcher().post([&] { server_->shutdown(); });
server_thread->join();
}
// Validates that the "server.fips_mode" stat indicates the FIPS compliance from the Envoy Build
TEST_P(ServerInstanceImplTest, ValidateFIPSModeStat) {
auto server_thread =
startTestServer("test/server/test_data/server/proxy_version_bootstrap.yaml", true);
if (VersionInfo::sslFipsCompliant()) {
EXPECT_EQ(
1L, TestUtility::findGauge(stats_store_, "server.compilation_settings.fips_mode")->value());
} else {
EXPECT_EQ(
0L, TestUtility::findGauge(stats_store_, "server.compilation_settings.fips_mode")->value());
}
server_->dispatcher().post([&] { server_->shutdown(); });
server_thread->join();
}
// Validate the the Envoy FIPS compilation flags are consistent with the FIPS
// mode of the underlying BoringSSL build.
TEST_P(ServerInstanceImplTest, ValidateFIPSModeConsistency) {
bool isFIPS = (FIPS_mode() != 0);
EXPECT_EQ(isFIPS, VersionInfo::sslFipsCompliant());
}
TEST_P(ServerInstanceImplTest, EmptyShutdownLifecycleNotifications) {
auto server_thread = startTestServer("test/server/test_data/server/node_bootstrap.yaml", false);
server_->dispatcher().post([&] { server_->shutdown(); });
server_thread->join();
// Validate that initialization_time histogram value has been set.
EXPECT_TRUE(stats_store_
.histogramFromString("server.initialization_time_ms",
Stats::Histogram::Unit::Milliseconds)
.used());
EXPECT_EQ(0L, TestUtility::findGauge(stats_store_, "server.state")->value());
}
// Catch exceptions in secondary cluster initialization callbacks. These are not caught in the main
// initialization try/catch.
TEST_P(ServerInstanceImplTest, SecondaryClusterExceptions) {
// Error in reading illegal file path for channel credentials in secondary cluster.
EXPECT_LOG_CONTAINS("warn",
"Skipping initialization of secondary cluster: API configs must have either "
"a gRPC service or a cluster name defined",
{
initialize("test/server/test_data/server/health_check_nullptr.yaml");
server_->dispatcher().run(Event::Dispatcher::RunType::NonBlock);
});
}
// Catch exceptions in HDS cluster initialization callbacks.
TEST_P(ServerInstanceImplTest, HdsClusterException) {
// Error in reading illegal file path for channel credentials in secondary cluster.
EXPECT_LOG_CONTAINS("warn",
"Skipping initialization of HDS cluster: API configs must have either a gRPC "
"service or a cluster name defined",
{
initialize("test/server/test_data/server/hds_exception.yaml");
server_->dispatcher().run(Event::Dispatcher::RunType::NonBlock);
});
}
TEST_P(ServerInstanceImplTest, LifecycleNotifications) {
bool startup = false, post_init = false, shutdown = false, shutdown_with_completion = false;
absl::Notification started, post_init_fired, shutdown_begin, completion_block, completion_done;
// Run the server in a separate thread so we can test different lifecycle stages.
auto server_thread = Thread::threadFactoryForTest().createThread([&] {
initialize("test/server/test_data/server/node_bootstrap.yaml");
auto handle1 = server_->registerCallback(ServerLifecycleNotifier::Stage::Startup, [&] {
startup = true;
started.Notify();
});
auto handle2 = server_->registerCallback(ServerLifecycleNotifier::Stage::PostInit, [&] {
post_init = true;
post_init_fired.Notify();
});
ServerLifecycleNotifier::HandlePtr handle3 =
server_->registerCallback(ServerLifecycleNotifier::Stage::ShutdownExit, [&] {
shutdown = true;
shutdown_begin.Notify();
handle3 = nullptr;
});
auto handle4 = server_->registerCallback(ServerLifecycleNotifier::Stage::ShutdownExit,
[&](Event::PostCb completion_cb) {
// Block till we're told to complete
completion_block.WaitForNotification();
shutdown_with_completion = true;
server_->dispatcher().post(std::move(completion_cb));
completion_done.Notify();
});
auto handle5 =
server_->registerCallback(ServerLifecycleNotifier::Stage::Startup, [&] { FAIL(); });
handle5 = server_->registerCallback(ServerLifecycleNotifier::Stage::ShutdownExit,
[&](Event::PostCb) { FAIL(); });
handle5 = nullptr;
server_->run();
handle1 = nullptr;
handle2 = nullptr;
// handle3 is nulled out in the callback itself, to test that works as well
handle4 = nullptr;
server_ = nullptr;
thread_local_ = nullptr;
});
started.WaitForNotification();
EXPECT_TRUE(startup);
EXPECT_FALSE(shutdown);
EXPECT_TRUE(TestUtility::findGauge(stats_store_, "server.state")->used());
EXPECT_EQ(0L, TestUtility::findGauge(stats_store_, "server.state")->value());
post_init_fired.WaitForNotification();
EXPECT_TRUE(post_init);
EXPECT_FALSE(shutdown);
server_->dispatcher().post([&] { server_->shutdown(); });
shutdown_begin.WaitForNotification();
EXPECT_TRUE(shutdown);
// Expect the server to block waiting for the completion callback to be invoked
EXPECT_FALSE(completion_done.WaitForNotificationWithTimeout(absl::Seconds(1)));
completion_block.Notify();
completion_done.WaitForNotification();
EXPECT_TRUE(shutdown_with_completion);
server_thread->join();
}
class ServerInstanceImplWorkersTest : public ServerInstanceImplTest {
protected:
ServerInstanceImplWorkersTest() {
bool workers_started = false;
// Expect drainParentListeners not to be called before workers start.
EXPECT_CALL(restart_, drainParentListeners).Times(0);
// Run the server in a separate thread so we can test different lifecycle stages.
server_thread_ = Thread::threadFactoryForTest().createThread([&] {
auto hooks = CustomListenerHooks([&]() {
workers_started = true;
workers_started_fired_.Notify();
workers_started_block_.WaitForNotification();
});
initialize("test/server/test_data/server/node_bootstrap.yaml", false, hooks);
server_->run();
server_ = nullptr;
thread_local_ = nullptr;
});
workers_started_fired_.WaitForNotification();
EXPECT_TRUE(workers_started);
EXPECT_CALL(restart_, drainParentListeners);
}
~ServerInstanceImplWorkersTest() override {
server_->dispatcher().post([&] { server_->shutdown(); });
server_thread_->join();
}
absl::Notification workers_started_fired_;
absl::Notification workers_started_block_;
Thread::ThreadPtr server_thread_;
};
INSTANTIATE_TEST_SUITE_P(IpVersions, ServerInstanceImplWorkersTest,
testing::ValuesIn(TestEnvironment::getIpVersionsForTest()),
TestUtility::ipTestParamsToString);
TEST_P(ServerInstanceImplWorkersTest, DrainParentListenerAfterWorkersStarted) {
EXPECT_TRUE(TestUtility::findGauge(stats_store_, "server.state")->used());
EXPECT_EQ(0L, TestUtility::findGauge(stats_store_, "server.state")->value());
workers_started_block_.Notify();
}
TEST_P(ServerInstanceImplWorkersTest, DrainCloseAfterWorkersStarted) {
absl::Notification drain_closes_started, drain_complete;
workers_started_block_.Notify();
DrainManager& drain_manager = server_->drainManager();
// To reproduce the race condition from
// https://github.com/envoyproxy/envoy/issues/31457 we make sure that the
// infinite drainClose spin-loop (mimicing high traffic) is running before we
// initiate the drain sequence.
auto drain_thread = Thread::threadFactoryForTest().createThread([&] {
bool closed = drain_manager.drainClose();
drain_closes_started.Notify();
while (!closed) {
closed = drain_manager.drainClose();
}
});
drain_closes_started.WaitForNotification();
// Now that we are starting to try to call drainClose, we'll start the drain sequence, then
// wait for that to complete.
server_->dispatcher().post(
[&] { drain_manager.startDrainSequence([&drain_complete]() { drain_complete.Notify(); }); });
drain_complete.WaitForNotification();
drain_thread->join();
}
// A test target which never signals that it is ready.
class NeverReadyTarget : public Init::TargetImpl {
public:
NeverReadyTarget(absl::Notification& initialized)
: Init::TargetImpl("test", [this] { initialize(); }), initialized_(initialized) {}
private:
void initialize() { initialized_.Notify(); }
absl::Notification& initialized_;
};
TEST_P(ServerInstanceImplTest, NoLifecycleNotificationOnEarlyShutdown) {
absl::Notification initialized;
auto server_thread = Thread::threadFactoryForTest().createThread([&] {
initialize("test/server/test_data/server/node_bootstrap.yaml");
// This shutdown notification should never be called because we will shutdown
// early before the init manager finishes initializing and therefore before
// the server starts worker threads.
auto shutdown_handle = server_->registerCallback(ServerLifecycleNotifier::Stage::ShutdownExit,
[&](Event::PostCb) { FAIL(); });
NeverReadyTarget target(initialized);
server_->initManager().add(target);
server_->run();
shutdown_handle = nullptr;
server_ = nullptr;
thread_local_ = nullptr;
});
// Wait until the init manager starts initializing targets...
initialized.WaitForNotification();
// Now shutdown the main dispatcher and trigger server lifecycle notifications.
server_->dispatcher().post([&] { server_->shutdown(); });
server_thread->join();
}
TEST_P(ServerInstanceImplTest, ShutdownBeforeWorkersStarted) {
// Test that drainParentListeners() should never be called because we will shutdown
// early before the server starts worker threads.
EXPECT_CALL(restart_, drainParentListeners).Times(0);
auto server_thread = Thread::threadFactoryForTest().createThread([&] {
initialize("test/server/test_data/server/node_bootstrap.yaml");
auto post_init_handle = server_->registerCallback(ServerLifecycleNotifier::Stage::PostInit,
[&] { server_->shutdown(); });
// This shutdown notification should never be called because we will shutdown early.
auto shutdown_handle = server_->registerCallback(ServerLifecycleNotifier::Stage::ShutdownExit,
[&](Event::PostCb) { FAIL(); });
server_->run();
post_init_handle = nullptr;
shutdown_handle = nullptr;
server_ = nullptr;
thread_local_ = nullptr;
});
server_thread->join();
}
TEST_P(ServerInstanceImplTest, Stats) {
options_.service_cluster_name_ = "some_cluster_name";
options_.service_node_name_ = "some_node_name";
options_.concurrency_ = 2;
options_.hot_restart_epoch_ = 3;
EXPECT_NO_THROW(initialize("test/server/test_data/server/empty_bootstrap.yaml"));
EXPECT_NE(nullptr, TestUtility::findCounter(stats_store_, "main_thread.watchdog_miss"));
EXPECT_NE(nullptr, TestUtility::findCounter(stats_store_, "workers.watchdog_miss"));
EXPECT_EQ(2L, TestUtility::findGauge(stats_store_, "server.concurrency")->value());
EXPECT_EQ(3L, TestUtility::findGauge(stats_store_, "server.hot_restart_epoch")->value());
// The ENVOY_BUG stat works in release mode.
#if defined(NDEBUG)
// Test exponential back-off on a fixed line ENVOY_BUG.
for (int i = 0; i < 16; i++) {
ENVOY_BUG(false, "");
}
EXPECT_EQ(5L, TestUtility::findCounter(stats_store_, "server.envoy_bug_failures")->value());
// Another ENVOY_BUG increments the counter.
ENVOY_BUG(false, "Testing envoy bug assertion failure detection in release build.");
EXPECT_EQ(6L, TestUtility::findCounter(stats_store_, "server.envoy_bug_failures")->value());
#else
// The ENVOY_BUG macro aborts in debug mode.
EXPECT_DEATH(ENVOY_BUG(false, ""), "");
#endif
// The ASSERT stat only works in this configuration.
#if defined(NDEBUG) && defined(ENVOY_LOG_DEBUG_ASSERT_IN_RELEASE)
ASSERT(false, "Testing debug assertion failure detection in release build.");
EXPECT_EQ(1L, TestUtility::findCounter(stats_store_, "server.debug_assertion_failures")->value());
#else
EXPECT_EQ(0L, TestUtility::findCounter(stats_store_, "server.debug_assertion_failures")->value());
#endif
}
class ServerStatsTest
: public Event::TestUsingSimulatedTime,
public ServerInstanceImplTestBase,
public testing::TestWithParam<std::tuple<Network::Address::IpVersion, bool>> {
protected:
ServerStatsTest() {
version_ = std::get<0>(GetParam());
manual_flush_ = std::get<1>(GetParam());
}
void flushStats() {
if (manual_flush_) {
server_->flushStats();
server_->dispatcher().run(Event::Dispatcher::RunType::Block);
} else {
// Default flush interval is 5 seconds.
simTime().advanceTimeAndRun(std::chrono::seconds(6), server_->dispatcher(),
Event::Dispatcher::RunType::Block);
}
}
bool manual_flush_;
};
std::string ipFlushingModeTestParamsToString(
const ::testing::TestParamInfo<std::tuple<Network::Address::IpVersion, bool>>& params) {
return fmt::format(
"{}_{}",
TestUtility::ipTestParamsToString(
::testing::TestParamInfo<Network::Address::IpVersion>(std::get<0>(params.param), 0)),
std::get<1>(params.param) ? "with_manual_flush" : "with_time_based_flush");
}
INSTANTIATE_TEST_SUITE_P(
IpVersionsFlushingMode, ServerStatsTest,
testing::Combine(testing::ValuesIn(TestEnvironment::getIpVersionsForTest()), testing::Bool()),
ipFlushingModeTestParamsToString);
TEST_P(ServerStatsTest, FlushStats) {
initialize("test/server/test_data/server/empty_bootstrap.yaml");
Stats::Gauge& recent_lookups = stats_store_.gaugeFromString(
"server.stats_recent_lookups", Stats::Gauge::ImportMode::NeverImport);
EXPECT_EQ(0, recent_lookups.value());
flushStats();
uint64_t strobed_recent_lookups = recent_lookups.value();
EXPECT_LT(100, strobed_recent_lookups); // Recently this was 319 but exact value not important.
Stats::StatNameSetPtr test_set = stats_store_.symbolTable().makeSet("test");
// When we remember a StatNameSet builtin, we charge only for the SymbolTable
// lookup, which requires a lock.
test_set->rememberBuiltin("a.b");
flushStats();
EXPECT_EQ(1, recent_lookups.value() - strobed_recent_lookups);
strobed_recent_lookups = recent_lookups.value();
// When we create a dynamic stat, there are no locks taken.
Stats::StatNameDynamicStorage dynamic_stat("c.d", stats_store_.symbolTable());
flushStats();
EXPECT_EQ(recent_lookups.value(), strobed_recent_lookups);
}
TEST_P(ServerInstanceImplTest, FlushStatsOnAdmin) {
CustomStatsSinkFactory factory;
Registry::InjectFactory<Server::Configuration::StatsSinkFactory> registered(factory);
auto server_thread =
startTestServer("test/server/test_data/server/stats_sink_manual_flush_bootstrap.yaml", true);
EXPECT_TRUE(server_->statsConfig().flushOnAdmin());
EXPECT_EQ(std::chrono::seconds(5), server_->statsConfig().flushInterval());
auto counter = TestUtility::findCounter(stats_store_, "stats.flushed");
time_system_.advanceTimeWait(std::chrono::seconds(6));
EXPECT_EQ(0L, counter->value());
// Flush via admin.
Http::TestResponseHeaderMapImpl response_headers;
std::string body;
EXPECT_EQ(Http::Code::OK, server_->admin()->request("/stats", "GET", response_headers, body));
EXPECT_EQ(1L, counter->value());
time_system_.advanceTimeWait(std::chrono::seconds(6));
EXPECT_EQ(1L, counter->value());
server_->dispatcher().post([&] { server_->shutdown(); });
server_thread->join();
}
TEST_P(ServerInstanceImplTest, ConcurrentFlushes) {
CustomStatsSinkFactory factory;
Registry::InjectFactory<Server::Configuration::StatsSinkFactory> registered(factory);
bool workers_started = false;
absl::Notification workers_started_fired;
// Run the server in a separate thread so we can test different lifecycle stages.
auto server_thread = Thread::threadFactoryForTest().createThread([&] {
auto hooks = CustomListenerHooks([&]() {
workers_started = true;
workers_started_fired.Notify();
});
initialize("test/server/test_data/server/stats_sink_manual_flush_bootstrap.yaml", false, hooks);
server_->run();
server_ = nullptr;
thread_local_ = nullptr;
});
workers_started_fired.WaitForNotification();
EXPECT_TRUE(workers_started);
// Flush three times in a row. Two of these should get dropped.
server_->dispatcher().post([&] {
server_->flushStats();
server_->flushStats();
server_->flushStats();
});
EXPECT_TRUE(
TestUtility::waitForCounterEq(stats_store_, "server.dropped_stat_flushes", 2, time_system_));
server_->dispatcher().post([&] { stats_store_.runMergeCallback(); });
EXPECT_TRUE(TestUtility::waitForCounterEq(stats_store_, "stats.flushed", 1, time_system_));
// Trigger another flush after the first one finished. This should go through an no drops should
// be recorded.
server_->dispatcher().post([&] { server_->flushStats(); });
server_->dispatcher().post([&] { stats_store_.runMergeCallback(); });
EXPECT_TRUE(TestUtility::waitForCounterEq(stats_store_, "stats.flushed", 2, time_system_));
EXPECT_TRUE(
TestUtility::waitForCounterEq(stats_store_, "server.dropped_stat_flushes", 2, time_system_));
server_->dispatcher().post([&] { server_->shutdown(); });
server_thread->join();
}
// Default validation mode
TEST_P(ServerInstanceImplTest, ValidationDefault) {
options_.service_cluster_name_ = "some_cluster_name";
options_.service_node_name_ = "some_node_name";
EXPECT_NO_THROW(initialize("test/server/test_data/server/empty_bootstrap.yaml"));
EXPECT_EQ(
server_->messageValidationContext().staticValidationVisitor().onUnknownField("foo").message(),
"Protobuf message (foo) has unknown fields");
EXPECT_EQ(0, TestUtility::findCounter(stats_store_, "server.static_unknown_fields")->value());
EXPECT_TRUE(
server_->messageValidationContext().dynamicValidationVisitor().onUnknownField("bar").ok());
EXPECT_EQ(1, TestUtility::findCounter(stats_store_, "server.dynamic_unknown_fields")->value());
}
// Validation mode with --allow-unknown-static-fields
TEST_P(ServerInstanceImplTest, ValidationAllowStatic) {
options_.service_cluster_name_ = "some_cluster_name";
options_.service_node_name_ = "some_node_name";
options_.allow_unknown_static_fields_ = true;
EXPECT_NO_THROW(initialize("test/server/test_data/server/empty_bootstrap.yaml"));
EXPECT_TRUE(
server_->messageValidationContext().staticValidationVisitor().onUnknownField("foo").ok());
EXPECT_EQ(1, TestUtility::findCounter(stats_store_, "server.static_unknown_fields")->value());
EXPECT_TRUE(
server_->messageValidationContext().dynamicValidationVisitor().onUnknownField("bar").ok());
EXPECT_EQ(1, TestUtility::findCounter(stats_store_, "server.dynamic_unknown_fields")->value());
}
// Validation mode with --reject-unknown-dynamic-fields
TEST_P(ServerInstanceImplTest, ValidationRejectDynamic) {
options_.service_cluster_name_ = "some_cluster_name";
options_.service_node_name_ = "some_node_name";
options_.reject_unknown_dynamic_fields_ = true;
options_.ignore_unknown_dynamic_fields_ = true; // reject takes precedence over ignore
EXPECT_NO_THROW(initialize("test/server/test_data/server/empty_bootstrap.yaml"));
EXPECT_EQ(
server_->messageValidationContext().staticValidationVisitor().onUnknownField("foo").message(),
"Protobuf message (foo) has unknown fields");
EXPECT_EQ(0, TestUtility::findCounter(stats_store_, "server.static_unknown_fields")->value());
EXPECT_EQ(server_->messageValidationContext()
.dynamicValidationVisitor()
.onUnknownField("bar")