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drain_close_integration_test.cc
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drain_close_integration_test.cc
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#include "test/integration/http_protocol_integration.h"
#include "test/test_common/utility.h"
namespace Envoy {
namespace {
using DrainCloseIntegrationTest = HttpProtocolIntegrationTest;
TEST_P(DrainCloseIntegrationTest, DrainCloseGradual) {
autonomous_upstream_ = true;
// The probability of drain close increases over time. With a high timeout,
// the probability will be very low, but the rapid retries prevent this from
// increasing total test time.
drain_time_ = std::chrono::seconds(100);
initialize();
absl::Notification drain_sequence_started;
test_server_->server().dispatcher().post([this, &drain_sequence_started]() {
test_server_->drainManager().startDrainSequence([] {});
drain_sequence_started.Notify();
});
drain_sequence_started.WaitForNotification();
codec_client_ = makeHttpConnection(lookupPort("http"));
EXPECT_FALSE(codec_client_->disconnected());
IntegrationStreamDecoderPtr response;
while (!test_server_->counter("http.config_test.downstream_cx_drain_close")->value()) {
response = codec_client_->makeHeaderOnlyRequest(default_request_headers_);
ASSERT_TRUE(response->waitForEndStream());
}
EXPECT_EQ(test_server_->counter("http.config_test.downstream_cx_drain_close")->value(), 1L);
ASSERT_TRUE(codec_client_->waitForDisconnect());
EXPECT_TRUE(response->complete());
EXPECT_EQ("200", response->headers().getStatusValue());
if (downstream_protocol_ == Http::CodecType::HTTP2) {
EXPECT_TRUE(codec_client_->sawGoAway());
} else {
EXPECT_EQ("close", response->headers().getConnectionValue());
}
}
TEST_P(DrainCloseIntegrationTest, DrainCloseImmediate) {
autonomous_upstream_ = true;
drain_strategy_ = Server::DrainStrategy::Immediate;
drain_time_ = std::chrono::seconds(100);
initialize();
absl::Notification drain_sequence_started;
test_server_->server().dispatcher().post([this, &drain_sequence_started]() {
test_server_->drainManager().startDrainSequence([] {});
drain_sequence_started.Notify();
});
drain_sequence_started.WaitForNotification();
codec_client_ = makeHttpConnection(lookupPort("http"));
EXPECT_FALSE(codec_client_->disconnected());
IntegrationStreamDecoderPtr response;
response = codec_client_->makeHeaderOnlyRequest(default_request_headers_);
ASSERT_TRUE(response->waitForEndStream());
ASSERT_TRUE(codec_client_->waitForDisconnect());
EXPECT_TRUE(response->complete());
EXPECT_EQ("200", response->headers().getStatusValue());
if (downstream_protocol_ == Http::CodecType::HTTP2) {
EXPECT_TRUE(codec_client_->sawGoAway());
} else {
EXPECT_EQ("close", response->headers().getConnectionValue());
}
}
TEST_P(DrainCloseIntegrationTest, AdminDrain) { testAdminDrain(downstreamProtocol()); }
TEST_P(DrainCloseIntegrationTest, AdminGracefulDrain) {
drain_strategy_ = Server::DrainStrategy::Immediate;
drain_time_ = std::chrono::seconds(999);
initialize();
uint32_t http_port = lookupPort("http");
codec_client_ = makeHttpConnection(http_port);
auto response = codec_client_->makeHeaderOnlyRequest(default_request_headers_);
waitForNextUpstreamRequest(0);
upstream_request_->encodeHeaders(default_response_headers_, true);
ASSERT_TRUE(response->waitForEndStream());
ASSERT_TRUE(response->complete());
EXPECT_THAT(response->headers(), Http::HttpStatusIs("200"));
// The request is completed but the connection remains open.
EXPECT_TRUE(codec_client_->connected());
// Invoke /drain_listeners with graceful drain
BufferingStreamDecoderPtr admin_response = IntegrationUtil::makeSingleRequest(
lookupPort("admin"), "POST", "/drain_listeners?graceful", "", downstreamProtocol(), version_);
EXPECT_EQ(admin_response->headers().Status()->value().getStringView(), "200");
// With a 999s graceful drain period, the listener should still be open.
EXPECT_EQ(test_server_->counter("listener_manager.listener_stopped")->value(), 0);
response = codec_client_->makeHeaderOnlyRequest(default_request_headers_);
waitForNextUpstreamRequest(0);
upstream_request_->encodeHeaders(default_response_headers_, true);
ASSERT_TRUE(response->waitForEndStream());
ASSERT_TRUE(response->complete());
EXPECT_THAT(response->headers(), Http::HttpStatusIs("200"));
// Connections will terminate on request complete
ASSERT_TRUE(codec_client_->waitForDisconnect());
if (downstream_protocol_ == Http::CodecType::HTTP2) {
EXPECT_TRUE(codec_client_->sawGoAway());
} else {
EXPECT_EQ("close", response->headers().getConnectionValue());
}
// New connections can still be made.
auto second_codec_client_ = makeRawHttpConnection(makeClientConnection(http_port), absl::nullopt);
EXPECT_TRUE(second_codec_client_->connected());
// Invoke /drain_listeners and shut down listeners.
second_codec_client_->rawConnection().close(Network::ConnectionCloseType::NoFlush);
admin_response = IntegrationUtil::makeSingleRequest(
lookupPort("admin"), "POST", "/drain_listeners", "", downstreamProtocol(), version_);
EXPECT_EQ(admin_response->headers().Status()->value().getStringView(), "200");
test_server_->waitForCounterEq("listener_manager.listener_stopped", 1);
ASSERT_TRUE(waitForPortAvailable(http_port));
}
TEST_P(DrainCloseIntegrationTest, RepeatedAdminGracefulDrain) {
// Use the default gradual probabilistic DrainStrategy so drainClose()
// behaviour isn't conflated with whether the drain sequence has started.
drain_time_ = std::chrono::seconds(999);
initialize();
uint32_t http_port = lookupPort("http");
codec_client_ = makeHttpConnection(http_port);
auto response = codec_client_->makeHeaderOnlyRequest(default_request_headers_);
waitForNextUpstreamRequest(0);
upstream_request_->encodeHeaders(default_response_headers_, true);
ASSERT_TRUE(response->waitForEndStream());
// Invoke /drain_listeners with graceful drain
BufferingStreamDecoderPtr admin_response = IntegrationUtil::makeSingleRequest(
lookupPort("admin"), "POST", "/drain_listeners?graceful", "", downstreamProtocol(), version_);
EXPECT_EQ(admin_response->headers().Status()->value().getStringView(), "200");
EXPECT_EQ(test_server_->counter("listener_manager.listener_stopped")->value(), 0);
admin_response = IntegrationUtil::makeSingleRequest(
lookupPort("admin"), "POST", "/drain_listeners?graceful", "", downstreamProtocol(), version_);
EXPECT_EQ(admin_response->headers().Status()->value().getStringView(), "200");
EXPECT_EQ(admin_response->headers().Status()->value().getStringView(), "200");
response = codec_client_->makeHeaderOnlyRequest(default_request_headers_);
waitForNextUpstreamRequest(0);
upstream_request_->encodeHeaders(default_response_headers_, true);
ASSERT_TRUE(response->waitForEndStream());
ASSERT_TRUE(response->complete());
EXPECT_THAT(response->headers(), Http::HttpStatusIs("200"));
admin_response = IntegrationUtil::makeSingleRequest(
lookupPort("admin"), "POST", "/drain_listeners", "", downstreamProtocol(), version_);
EXPECT_EQ(admin_response->headers().Status()->value().getStringView(), "200");
test_server_->waitForCounterEq("listener_manager.listener_stopped", 1);
ASSERT_TRUE(waitForPortAvailable(http_port));
}
TEST_P(DrainCloseIntegrationTest, AdminGracefulDrainSkipExit) {
drain_strategy_ = Server::DrainStrategy::Immediate;
drain_time_ = std::chrono::seconds(1);
initialize();
uint32_t http_port = lookupPort("http");
codec_client_ = makeHttpConnection(http_port);
auto response = codec_client_->makeHeaderOnlyRequest(default_request_headers_);
waitForNextUpstreamRequest(0);
upstream_request_->encodeHeaders(default_response_headers_, true);
ASSERT_TRUE(response->waitForEndStream());
ASSERT_TRUE(response->complete());
EXPECT_THAT(response->headers(), Http::HttpStatusIs("200"));
// The request is completed but the connection remains open.
EXPECT_TRUE(codec_client_->connected());
// Invoke /drain_listeners with graceful drain
BufferingStreamDecoderPtr admin_response = IntegrationUtil::makeSingleRequest(
lookupPort("admin"), "POST", "/drain_listeners?graceful&skip_exit", "", downstreamProtocol(),
version_);
EXPECT_EQ(admin_response->headers().Status()->value().getStringView(), "200");
// Listeners should remain open
EXPECT_EQ(test_server_->counter("listener_manager.listener_stopped")->value(), 0);
response = codec_client_->makeHeaderOnlyRequest(default_request_headers_);
waitForNextUpstreamRequest(0);
upstream_request_->encodeHeaders(default_response_headers_, true);
ASSERT_TRUE(response->waitForEndStream());
ASSERT_TRUE(response->complete());
EXPECT_THAT(response->headers(), Http::HttpStatusIs("200"));
// Connections will terminate on request complete
ASSERT_TRUE(codec_client_->waitForDisconnect());
if (downstream_protocol_ == Http::CodecType::HTTP2) {
EXPECT_TRUE(codec_client_->sawGoAway());
} else {
EXPECT_EQ("close", response->headers().getConnectionValue());
}
// New connections can still be made.
auto second_codec_client_ = makeRawHttpConnection(makeClientConnection(http_port), absl::nullopt);
EXPECT_TRUE(second_codec_client_->connected());
// Invoke /drain_listeners and shut down listeners.
second_codec_client_->rawConnection().close(Network::ConnectionCloseType::NoFlush);
admin_response = IntegrationUtil::makeSingleRequest(
lookupPort("admin"), "POST", "/drain_listeners", "", downstreamProtocol(), version_);
EXPECT_EQ(admin_response->headers().Status()->value().getStringView(), "200");
test_server_->waitForCounterEq("listener_manager.listener_stopped", 1);
ASSERT_TRUE(waitForPortAvailable(http_port));
}
INSTANTIATE_TEST_SUITE_P(Protocols, DrainCloseIntegrationTest,
testing::ValuesIn(HttpProtocolIntegrationTest::getProtocolTestParams(
{Http::CodecType::HTTP1, Http::CodecType::HTTP2},
{Http::CodecType::HTTP1})),
HttpProtocolIntegrationTest::protocolTestParamsToString);
} // namespace
} // namespace Envoy