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worker_impl_test.cc
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worker_impl_test.cc
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#include "envoy/network/exception.h"
#include "source/common/api/api_impl.h"
#include "source/common/event/dispatcher_impl.h"
#include "source/server/worker_impl.h"
#include "test/mocks/network/mocks.h"
#include "test/mocks/runtime/mocks.h"
#include "test/mocks/server/guard_dog.h"
#include "test/mocks/server/instance.h"
#include "test/mocks/server/overload_manager.h"
#include "test/mocks/thread_local/mocks.h"
#include "test/test_common/utility.h"
#include "absl/synchronization/notification.h"
#include "gtest/gtest.h"
using testing::_;
using testing::InSequence;
using testing::Invoke;
using testing::InvokeWithoutArgs;
using testing::NiceMock;
using testing::Return;
using testing::Throw;
namespace Envoy {
namespace Server {
namespace {
Event::PostCb emptyCallback = []() {};
class WorkerImplTest : public testing::Test {
public:
WorkerImplTest()
: api_(Api::createApiForTest()), dispatcher_(api_->allocateDispatcher("worker_test")),
no_exit_timer_(dispatcher_->createTimer([]() -> void {})),
stat_names_(api_->rootScope().symbolTable()),
worker_(tls_, hooks_, std::move(dispatcher_), Network::ConnectionHandlerPtr{handler_},
overload_manager_, *api_, stat_names_) {
// In the real worker the watchdog has timers that prevent exit. Here we need to prevent event
// loop exit since we use mock timers.
no_exit_timer_->enableTimer(std::chrono::hours(1));
}
~WorkerImplTest() override {
// We init no_exit_timer_ before worker_ because the dispatcher will be
// moved into the worker. However we need to destruct no_exit_timer_ before
// destructing the worker, otherwise the timer will outlive its dispatcher.
no_exit_timer_.reset();
}
NiceMock<Runtime::MockLoader> runtime_;
NiceMock<ThreadLocal::MockInstance> tls_;
Network::MockConnectionHandler* handler_ = new Network::MockConnectionHandler();
NiceMock<MockGuardDog> guard_dog_;
NiceMock<MockOverloadManager> overload_manager_;
Api::ApiPtr api_;
Event::DispatcherPtr dispatcher_;
DefaultListenerHooks hooks_;
Event::TimerPtr no_exit_timer_;
WorkerStatNames stat_names_;
WorkerImpl worker_;
};
TEST_F(WorkerImplTest, BasicFlow) {
InSequence s;
std::thread::id current_thread_id = std::this_thread::get_id();
ConditionalInitializer ci;
// Before a worker is started adding a listener will be posted and will get added when the
// thread starts running.
NiceMock<Network::MockListenerConfig> listener;
ON_CALL(listener, listenerTag()).WillByDefault(Return(1UL));
EXPECT_CALL(*handler_, addListener(_, _, _))
.WillOnce(
Invoke([current_thread_id](absl::optional<uint64_t>, Network::ListenerConfig& config,
Runtime::Loader&) -> void {
EXPECT_EQ(config.listenerTag(), 1UL);
EXPECT_NE(current_thread_id, std::this_thread::get_id());
}));
worker_.addListener(
absl::nullopt, listener, [&ci]() -> void { ci.setReady(); }, runtime_);
NiceMock<Stats::MockStore> store;
worker_.start(guard_dog_, emptyCallback);
worker_.initializeStats(store);
ci.waitReady();
// After a worker is started adding/stopping/removing a listener happens on the worker thread.
NiceMock<Network::MockListenerConfig> listener2;
ON_CALL(listener2, listenerTag()).WillByDefault(Return(2UL));
EXPECT_CALL(*handler_, addListener(_, _, _))
.WillOnce(
Invoke([current_thread_id](absl::optional<uint64_t>, Network::ListenerConfig& config,
Runtime::Loader&) -> void {
EXPECT_EQ(config.listenerTag(), 2UL);
EXPECT_NE(current_thread_id, std::this_thread::get_id());
}));
worker_.addListener(
absl::nullopt, listener2, [&ci]() -> void { ci.setReady(); }, runtime_);
ci.waitReady();
EXPECT_CALL(*handler_, stopListeners(2))
.WillOnce(InvokeWithoutArgs([current_thread_id, &ci]() -> void {
EXPECT_NE(current_thread_id, std::this_thread::get_id());
ci.setReady();
}));
ConditionalInitializer ci2;
// Verify that callback is called from the other thread.
worker_.stopListener(listener2, [current_thread_id, &ci2]() {
EXPECT_NE(current_thread_id, std::this_thread::get_id());
ci2.setReady();
});
ci.waitReady();
ci2.waitReady();
EXPECT_CALL(*handler_, removeListeners(2))
.WillOnce(InvokeWithoutArgs([current_thread_id]() -> void {
EXPECT_NE(current_thread_id, std::this_thread::get_id());
}));
worker_.removeListener(listener2, [current_thread_id, &ci]() -> void {
EXPECT_NE(current_thread_id, std::this_thread::get_id());
ci.setReady();
});
ci.waitReady();
// Now test adding and removing a listener without stopping it first.
NiceMock<Network::MockListenerConfig> listener3;
ON_CALL(listener3, listenerTag()).WillByDefault(Return(3UL));
EXPECT_CALL(*handler_, addListener(_, _, _))
.WillOnce(
Invoke([current_thread_id](absl::optional<uint64_t>, Network::ListenerConfig& config,
Runtime::Loader&) -> void {
EXPECT_EQ(config.listenerTag(), 3UL);
EXPECT_NE(current_thread_id, std::this_thread::get_id());
}));
worker_.addListener(
absl::nullopt, listener3, [&ci]() -> void { ci.setReady(); }, runtime_);
ci.waitReady();
EXPECT_CALL(*handler_, removeListeners(3))
.WillOnce(InvokeWithoutArgs([current_thread_id]() -> void {
EXPECT_NE(current_thread_id, std::this_thread::get_id());
}));
worker_.removeListener(listener3, [current_thread_id]() -> void {
EXPECT_NE(current_thread_id, std::this_thread::get_id());
});
worker_.stop();
}
TEST_F(WorkerImplTest, WorkerInvokesProvidedCallback) {
absl::Notification callback_ran;
auto cb = [&callback_ran]() { callback_ran.Notify(); };
worker_.start(guard_dog_, cb);
callback_ran.WaitForNotification();
worker_.stop();
}
} // namespace
} // namespace Server
} // namespace Envoy