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Merged
mattklein123 merged 5 commits into from
Nov 8, 2019
Merged

listener: clean up accept filter before creating connection #8922

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2ff37ee
listener: clean up accept filter before creating connection
lambdai Nov 6, 2019
0012845
address comment
lambdai Nov 7, 2019
354ad99
add unit test
lambdai Nov 7, 2019
8523a5f
add unit test
lambdai Nov 7, 2019
ab41193
fix times, naming and comments
lambdai Nov 7, 2019
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5 changes: 5 additions & 0 deletions source/server/connection_handler_impl.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -264,6 +264,11 @@ void ConnectionHandlerImpl::ActiveTcpSocket::newConnection() {
socket_->setDetectedTransportProtocol(
Extensions::TransportSockets::TransportProtocolNames::get().RawBuffer);
}
// TODO(lambdai): add integration test
// TODO: Address issues in wider scope. See https://github.com/envoyproxy/envoy/issues/8925
// Erase accept filter states because accept filters may not get the opportunity to clean up.
// Particularly the assigned events need to reset before assigning new events in the follow up.
accept_filters_.clear();
// Create a new connection on this listener.
listener_.newConnection(std::move(socket_));
}
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2 changes: 1 addition & 1 deletion test/mocks/network/mocks.cc
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Expand Up @@ -98,7 +98,7 @@ MockDrainDecision::MockDrainDecision() = default;
MockDrainDecision::~MockDrainDecision() = default;

MockListenerFilter::MockListenerFilter() = default;
MockListenerFilter::~MockListenerFilter() = default;
MockListenerFilter::~MockListenerFilter() { destroy_(); }

MockListenerFilterCallbacks::MockListenerFilterCallbacks() {
ON_CALL(*this, socket()).WillByDefault(ReturnRef(socket_));
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1 change: 1 addition & 0 deletions test/mocks/network/mocks.h
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Expand Up @@ -164,6 +164,7 @@ class MockListenerFilter : public ListenerFilter {
MockListenerFilter();
~MockListenerFilter() override;

MOCK_METHOD0(destroy_, void());
MOCK_METHOD1(onAccept, Network::FilterStatus(ListenerFilterCallbacks&));
};

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20 changes: 14 additions & 6 deletions test/server/connection_handler_test.cc
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Expand Up @@ -361,7 +361,8 @@ TEST_F(ConnectionHandlerTest, NormalRedirect) {
EXPECT_CALL(test_listener2->socket_, localAddress()).WillRepeatedly(ReturnRef(alt_address));
handler_->addListener(*test_listener2);

Network::MockListenerFilter* test_filter = new Network::MockListenerFilter();
auto* test_filter = new NiceMock<Network::MockListenerFilter>();
EXPECT_CALL(*test_filter, destroy_());
Network::MockConnectionSocket* accepted_socket = new NiceMock<Network::MockConnectionSocket>();
bool redirected = false;
EXPECT_CALL(factory_, createListenerFilterChain(_))
Expand Down Expand Up @@ -432,6 +433,7 @@ TEST_F(ConnectionHandlerTest, FallbackToWildcardListener) {
handler_->addListener(*test_listener2);

Network::MockListenerFilter* test_filter = new Network::MockListenerFilter();
EXPECT_CALL(*test_filter, destroy_());
Network::MockConnectionSocket* accepted_socket = new NiceMock<Network::MockConnectionSocket>();
bool redirected = false;
EXPECT_CALL(factory_, createListenerFilterChain(_))
Expand Down Expand Up @@ -498,6 +500,7 @@ TEST_F(ConnectionHandlerTest, WildcardListenerWithOriginalDst) {
cb.socket().restoreLocalAddress(original_dst_address);
return Network::FilterStatus::Continue;
}));
EXPECT_CALL(*test_filter, destroy_());
EXPECT_CALL(*accepted_socket, restoreLocalAddress(original_dst_address));
EXPECT_CALL(*accepted_socket, localAddressRestored()).WillOnce(Return(true));
EXPECT_CALL(*accepted_socket, localAddress()).WillRepeatedly(ReturnRef(original_dst_address));
Expand Down Expand Up @@ -529,6 +532,7 @@ TEST_F(ConnectionHandlerTest, WildcardListenerWithNoOriginalDst) {
handler_->addListener(*test_listener1);

Network::MockListenerFilter* test_filter = new Network::MockListenerFilter();
EXPECT_CALL(*test_filter, destroy_());
Network::MockConnectionSocket* accepted_socket = new NiceMock<Network::MockConnectionSocket>();
EXPECT_CALL(factory_, createListenerFilterChain(_))
.WillRepeatedly(Invoke([&](Network::ListenerFilterManager& manager) -> bool {
Expand Down Expand Up @@ -586,6 +590,7 @@ TEST_F(ConnectionHandlerTest, TransportProtocolCustom) {
handler_->addListener(*test_listener);

Network::MockListenerFilter* test_filter = new Network::MockListenerFilter();
EXPECT_CALL(*test_filter, destroy_());
EXPECT_CALL(factory_, createListenerFilterChain(_))
.WillRepeatedly(Invoke([&](Network::ListenerFilterManager& manager) -> bool {
manager.addAcceptFilter(Network::ListenerFilterPtr{test_filter});
Expand Down Expand Up @@ -644,6 +649,7 @@ TEST_F(ConnectionHandlerTest, ListenerFilterTimeout) {

EXPECT_CALL(*timeout, disableTimer());
timeout->invokeCallback();
EXPECT_CALL(*test_filter, destroy_());
dispatcher_.clearDeferredDeleteList();
EXPECT_EQ(0UL, downstream_pre_cx_active.value());
EXPECT_EQ(1UL, stats_store_.counter("downstream_pre_cx_timeout").value());
Expand Down Expand Up @@ -672,7 +678,7 @@ TEST_F(ConnectionHandlerTest, ContinueOnListenerFilterTimeout) {
EXPECT_CALL(test_listener->socket_, localAddress());
handler_->addListener(*test_listener);

Network::MockListenerFilter* test_filter = new Network::MockListenerFilter();
Network::MockListenerFilter* test_filter = new NiceMock<Network::MockListenerFilter>();
EXPECT_CALL(factory_, createListenerFilterChain(_))
.WillRepeatedly(Invoke([&](Network::ListenerFilterManager& manager) -> bool {
manager.addAcceptFilter(Network::ListenerFilterPtr{test_filter});
Expand All @@ -691,7 +697,8 @@ TEST_F(ConnectionHandlerTest, ContinueOnListenerFilterTimeout) {
Stats::Gauge& downstream_pre_cx_active =
stats_store_.gauge("downstream_pre_cx_active", Stats::Gauge::ImportMode::Accumulate);
EXPECT_EQ(1UL, downstream_pre_cx_active.value());

EXPECT_CALL(*test_filter, destroy_());
// Barrier: test_filter must be destructed before findFilterChain
EXPECT_CALL(manager_, findFilterChain(_)).WillOnce(Return(nullptr));
EXPECT_CALL(*timeout, disableTimer());
timeout->invokeCallback();
Expand All @@ -708,7 +715,6 @@ TEST_F(ConnectionHandlerTest, ContinueOnListenerFilterTimeout) {
// Timeout is disabled once the listener filters complete.
TEST_F(ConnectionHandlerTest, ListenerFilterTimeoutResetOnSuccess) {
InSequence s;

TestListener* test_listener = addListener(1, true, false, "test_listener");
Network::MockListener* listener = new Network::MockListener();
Network::ListenerCallbacks* listener_callbacks;
Expand Down Expand Up @@ -740,7 +746,7 @@ TEST_F(ConnectionHandlerTest, ListenerFilterTimeoutResetOnSuccess) {
Event::MockTimer* timeout = new Event::MockTimer(&dispatcher_);
EXPECT_CALL(*timeout, enableTimer(std::chrono::milliseconds(15000), _));
listener_callbacks->onAccept(Network::ConnectionSocketPtr{accepted_socket});

EXPECT_CALL(*test_filter, destroy_());
EXPECT_CALL(manager_, findFilterChain(_)).WillOnce(Return(nullptr));
EXPECT_CALL(*timeout, disableTimer());
listener_filter_cb->continueFilterChain(true);
Expand Down Expand Up @@ -777,6 +783,7 @@ TEST_F(ConnectionHandlerTest, ListenerFilterDisabledTimeout) {
return Network::FilterStatus::StopIteration;
}));
EXPECT_CALL(dispatcher_, createTimer_(_)).Times(0);
EXPECT_CALL(*test_filter, destroy_());
Network::MockConnectionSocket* accepted_socket = new NiceMock<Network::MockConnectionSocket>();
listener_callbacks->onAccept(Network::ConnectionSocketPtr{accepted_socket});

Expand All @@ -801,7 +808,6 @@ TEST_F(ConnectionHandlerTest, ListenerFilterReportError) {

Network::MockListenerFilter* first_filter = new Network::MockListenerFilter();
Network::MockListenerFilter* last_filter = new Network::MockListenerFilter();

EXPECT_CALL(factory_, createListenerFilterChain(_))
.WillRepeatedly(Invoke([&](Network::ListenerFilterManager& manager) -> bool {
manager.addAcceptFilter(Network::ListenerFilterPtr{first_filter});
Expand All @@ -816,6 +822,8 @@ TEST_F(ConnectionHandlerTest, ListenerFilterReportError) {
}));
// The last filter won't be invoked
EXPECT_CALL(*last_filter, onAccept(_)).Times(0);
EXPECT_CALL(*first_filter, destroy_());
EXPECT_CALL(*last_filter, destroy_());
Network::MockConnectionSocket* accepted_socket = new NiceMock<Network::MockConnectionSocket>();
listener_callbacks->onAccept(Network::ConnectionSocketPtr{accepted_socket});

Expand Down