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async_client_impl_test.cc
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#include <chrono>
#include <cstdint>
#include <memory>
#include <string>
#include "envoy/config/core/v3/base.pb.h"
#include "envoy/config/route/v3/route_components.pb.h"
#include "envoy/stream_info/filter_state.h"
#include "source/common/buffer/buffer_impl.h"
#include "source/common/http/async_client_impl.h"
#include "source/common/http/context_impl.h"
#include "source/common/http/headers.h"
#include "source/common/http/utility.h"
#include "source/common/router/context_impl.h"
#include "source/common/router/upstream_codec_filter.h"
#include "source/common/stream_info/filter_state_impl.h"
#include "test/common/http/common.h"
#include "test/mocks/buffer/mocks.h"
#include "test/mocks/common.h"
#include "test/mocks/http/mocks.h"
#include "test/mocks/router/mocks.h"
#include "test/mocks/server/server_factory_context.h"
#include "test/mocks/stats/mocks.h"
#include "test/mocks/upstream/cluster_manager.h"
#include "test/test_common/printers.h"
#include "absl/types/optional.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
using testing::_;
using testing::AnyNumber;
using testing::Eq;
using testing::Invoke;
using testing::NiceMock;
using testing::Return;
using testing::ReturnRef;
using testing::StrictMock;
namespace Envoy {
namespace Http {
namespace {
class AsyncClientImplTest : public testing::Test {
public:
AsyncClientImplTest()
: http_context_(stats_store_.symbolTable()), router_context_(stats_store_.symbolTable()),
client_(cm_.thread_local_cluster_.cluster_.info_, stats_store_, dispatcher_, cm_,
factory_context_, Router::ShadowWriterPtr{new NiceMock<Router::MockShadowWriter>()},
http_context_, router_context_) {
message_->headers().setMethod("GET");
message_->headers().setHost("host");
message_->headers().setPath("/");
ON_CALL(*cm_.thread_local_cluster_.conn_pool_.host_, locality())
.WillByDefault(ReturnRef(envoy::config::core::v3::Locality().default_instance()));
cm_.initializeThreadLocalClusters({"fake_cluster"});
HttpTestUtility::addDefaultHeaders(headers_);
ON_CALL(cm_.thread_local_cluster_, chooseHost(_)).WillByDefault(Invoke([this] {
return Upstream::HostSelectionResponse{cm_.thread_local_cluster_.lb_.host_};
}));
}
virtual void expectSuccess(AsyncClient::Request* sent_request, uint64_t code) {
EXPECT_CALL(callbacks_, onBeforeFinalizeUpstreamSpan(_, _));
EXPECT_CALL(callbacks_, onSuccess_(_, _))
.WillOnce(Invoke([sent_request, code](const AsyncClient::Request& request,
ResponseMessage* response) -> void {
// Verify that callback is called with the same request handle as returned by
// AsyncClient::send().
EXPECT_EQ(sent_request, &request);
EXPECT_EQ(code, Utility::getResponseStatus(response->headers()));
}));
}
void expectResponseHeaders(MockAsyncClientStreamCallbacks& callbacks, uint64_t code,
bool end_stream) {
EXPECT_CALL(callbacks, onHeaders_(_, end_stream))
.WillOnce(Invoke([code](ResponseHeaderMap& headers, bool) -> void {
EXPECT_EQ(std::to_string(code), headers.getStatusValue());
}));
}
TestRequestHeaderMapImpl headers_{};
RequestMessagePtr message_{new RequestMessageImpl()};
Stats::MockIsolatedStatsStore stats_store_;
NiceMock<MockAsyncClientCallbacks> callbacks_;
NiceMock<MockAsyncClientStreamCallbacks> stream_callbacks_;
NiceMock<Server::Configuration::MockServerFactoryContext> factory_context_;
NiceMock<Upstream::MockClusterManager>& cm_{factory_context_.cluster_manager_};
NiceMock<MockRequestEncoder> stream_encoder_;
ResponseDecoder* response_decoder_{};
NiceMock<Event::MockTimer>* timer_;
NiceMock<Event::MockDispatcher>& dispatcher_{factory_context_.dispatcher_};
Http::ContextImpl http_context_;
Router::ContextImpl router_context_;
AsyncClientImpl client_;
NiceMock<StreamInfo::MockStreamInfo> stream_info_;
};
class AsyncClientImplTracingTest : public AsyncClientImplTest {
public:
AsyncClientImplTracingTest() {
ON_CALL(stream_info_, upstreamClusterInfo())
.WillByDefault(Return(absl::make_optional<Upstream::ClusterInfoConstSharedPtr>(
cm_.thread_local_cluster_.cluster_.info_)));
}
Tracing::MockSpan parent_span_;
const std::string child_span_name_{"Test Child Span Name"};
void expectSuccess(AsyncClient::Request* sent_request, uint64_t code) override {
EXPECT_CALL(callbacks_, onBeforeFinalizeUpstreamSpan(_, _))
.WillOnce(Invoke([](Tracing::Span& span, const Http::ResponseHeaderMap* response_headers) {
span.setTag("onBeforeFinalizeUpstreamSpan", "called");
ASSERT_NE(nullptr, response_headers);
}));
EXPECT_CALL(callbacks_, onSuccess_(_, _))
.WillOnce(Invoke([sent_request, code](const AsyncClient::Request& request,
ResponseMessage* response) -> void {
// Verify that callback is called with the same request handle as returned by
// AsyncClient::send().
EXPECT_EQ(sent_request, &request);
EXPECT_EQ(code, Utility::getResponseStatus(response->headers()));
}));
}
};
TEST_F(AsyncClientImplTest, BasicStream) {
Buffer::InstancePtr body{new Buffer::OwnedImpl("test body")};
EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _, _))
.WillOnce(Invoke(
[&](ResponseDecoder& decoder, ConnectionPool::Callbacks& callbacks,
const ConnectionPool::Instance::StreamOptions&) -> ConnectionPool::Cancellable* {
// The backing object of 'decoder' should also implemented the
// Router::UpstreamToDownstream.
const auto* upstream_to_downstream =
dynamic_cast<Router::UpstreamToDownstream*>(&decoder);
EXPECT_NE(nullptr, upstream_to_downstream);
// Ensure the route() is populated and valid.
EXPECT_NE(nullptr, upstream_to_downstream->route().routeEntry());
callbacks.onPoolReady(stream_encoder_, cm_.thread_local_cluster_.conn_pool_.host_,
stream_info_, {});
response_decoder_ = &decoder;
return nullptr;
}));
TestRequestHeaderMapImpl headers;
HttpTestUtility::addDefaultHeaders(headers);
headers.addCopy("x-envoy-internal", "true");
headers.addCopy("x-forwarded-for", "127.0.0.1");
headers.addCopy(":scheme", "http");
EXPECT_CALL(stream_encoder_, encodeHeaders(HeaderMapEqualRef(&headers), false));
EXPECT_CALL(stream_encoder_, encodeData(BufferEqual(body.get()), true));
expectResponseHeaders(stream_callbacks_, 200, false);
EXPECT_CALL(stream_callbacks_, onData(BufferEqual(body.get()), true));
EXPECT_CALL(stream_callbacks_, onComplete());
AsyncClient::Stream* stream = client_.start(stream_callbacks_, AsyncClient::StreamOptions());
stream->sendHeaders(headers, false);
stream->sendData(*body, true);
{
// Senseless but improves coverage.
Http::StreamDecoderFilterCallbacks* filter_callbacks =
dynamic_cast<Http::AsyncStreamImpl*>(stream);
filter_callbacks->continueDecoding(); // No-op.
Buffer::OwnedImpl buffer;
filter_callbacks->injectDecodedDataToFilterChain(buffer, true); // No-op.
filter_callbacks->modifyDecodingBuffer([](Buffer::Instance&) {}); // No-op.
filter_callbacks->encodeMetadata(nullptr); // No-op.
EXPECT_EQ(false, filter_callbacks->recreateStream(nullptr)); // No-op.
filter_callbacks->getUpstreamSocketOptions(); // No-op.
filter_callbacks->addUpstreamSocketOptions(nullptr); // No-op.
filter_callbacks->mostSpecificPerFilterConfig(); // No-op.
filter_callbacks->perFilterConfigs(); // No-op.
filter_callbacks->http1StreamEncoderOptions(); // No-op.
filter_callbacks->downstreamCallbacks(); // No-op.
filter_callbacks->upstreamCallbacks(); // No-op.
filter_callbacks->resetIdleTimer(); // No-op.
filter_callbacks->setUpstreamOverrideHost({}); // No-op.
filter_callbacks->filterConfigName(); // No-op.
filter_callbacks->informationalHeaders(); // No-op.
filter_callbacks->responseHeaders(); // No-op.
filter_callbacks->responseTrailers(); // No-op.
}
response_decoder_->decode1xxHeaders(
ResponseHeaderMapPtr(new TestResponseHeaderMapImpl{{":status", "100"}}));
response_decoder_->decodeHeaders(
ResponseHeaderMapPtr(new TestResponseHeaderMapImpl{{":status", "200"}}), false);
response_decoder_->decodeData(*body, true);
EXPECT_EQ(
1UL,
cm_.thread_local_cluster_.cluster_.info_->stats_store_.counter("upstream_rq_200").value());
EXPECT_EQ(1UL, cm_.thread_local_cluster_.cluster_.info_->stats_store_
.counter("internal.upstream_rq_200")
.value());
}
TEST_F(AsyncClientImplTest, BasicStreamWithInternalHeadersDisabled) {
Buffer::InstancePtr body{new Buffer::OwnedImpl("test body")};
EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _, _))
.WillOnce(Invoke(
[&](ResponseDecoder& decoder, ConnectionPool::Callbacks& callbacks,
const ConnectionPool::Instance::StreamOptions&) -> ConnectionPool::Cancellable* {
// The backing object of 'decoder' should also implemented the
// Router::UpstreamToDownstream.
const auto* upstream_to_downstream =
dynamic_cast<Router::UpstreamToDownstream*>(&decoder);
EXPECT_NE(nullptr, upstream_to_downstream);
// Ensure the route() is populated and valid.
EXPECT_NE(nullptr, upstream_to_downstream->route().routeEntry());
callbacks.onPoolReady(stream_encoder_, cm_.thread_local_cluster_.conn_pool_.host_,
stream_info_, {});
response_decoder_ = &decoder;
return nullptr;
}));
// Create the headers without x-envoy-internal and x-forwarded-for.
TestRequestHeaderMapImpl headers;
HttpTestUtility::addDefaultHeaders(headers);
EXPECT_CALL(stream_encoder_, encodeHeaders(HeaderMapEqualRef(&headers), false));
EXPECT_CALL(stream_encoder_, encodeData(BufferEqual(body.get()), true));
expectResponseHeaders(stream_callbacks_, 200, false);
EXPECT_CALL(stream_callbacks_, onData(BufferEqual(body.get()), true));
EXPECT_CALL(stream_callbacks_, onComplete());
AsyncClient::StreamOptions option = AsyncClient::StreamOptions();
// Set stream option to disable x-envoy-internal and x-forwarded-for headers.
option.setSendInternal(false);
option.setSendXff(false);
AsyncClient::Stream* stream = client_.start(stream_callbacks_, option);
TestRequestHeaderMapImpl send_headers = headers;
stream->sendHeaders(send_headers, false);
stream->sendData(*body, true);
response_decoder_->decode1xxHeaders(
ResponseHeaderMapPtr(new TestResponseHeaderMapImpl{{":status", "100"}}));
response_decoder_->decodeHeaders(
ResponseHeaderMapPtr(new TestResponseHeaderMapImpl{{":status", "200"}}), false);
response_decoder_->decodeData(*body, true);
EXPECT_EQ(
1UL,
cm_.thread_local_cluster_.cluster_.info_->stats_store_.counter("upstream_rq_200").value());
}
TEST_F(AsyncClientImplTest, Basic) {
message_->body().add("test body");
Buffer::Instance& data = message_->body();
EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _, _))
.WillOnce(Invoke(
[&](ResponseDecoder& decoder, ConnectionPool::Callbacks& callbacks,
const ConnectionPool::Instance::StreamOptions&) -> ConnectionPool::Cancellable* {
callbacks.onPoolReady(stream_encoder_, cm_.thread_local_cluster_.conn_pool_.host_,
stream_info_, {});
response_decoder_ = &decoder;
return nullptr;
}));
TestRequestHeaderMapImpl copy(message_->headers());
copy.addCopy("x-envoy-internal", "true");
copy.addCopy("x-forwarded-for", "127.0.0.1");
copy.addCopy(":scheme", "http");
EXPECT_CALL(stream_encoder_, encodeHeaders(HeaderMapEqualRef(©), false));
EXPECT_CALL(stream_encoder_, encodeData(BufferEqual(&data), true));
auto* request = client_.send(std::move(message_), callbacks_, AsyncClient::RequestOptions());
EXPECT_NE(request, nullptr);
expectSuccess(request, 200);
ResponseHeaderMapPtr response_headers(new TestResponseHeaderMapImpl{{":status", "200"}});
response_decoder_->decodeHeaders(std::move(response_headers), false);
response_decoder_->decodeData(data, true);
EXPECT_EQ(
1UL,
cm_.thread_local_cluster_.cluster_.info_->stats_store_.counter("upstream_rq_200").value());
EXPECT_EQ(1UL, cm_.thread_local_cluster_.cluster_.info_->stats_store_
.counter("internal.upstream_rq_200")
.value());
}
TEST_F(AsyncClientImplTest, NoResponseBodyBuffering) {
message_->body().add("test body");
Buffer::Instance& data = message_->body();
EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _, _))
.WillOnce(Invoke(
[&](ResponseDecoder& decoder, ConnectionPool::Callbacks& callbacks,
const ConnectionPool::Instance::StreamOptions&) -> ConnectionPool::Cancellable* {
callbacks.onPoolReady(stream_encoder_, cm_.thread_local_cluster_.conn_pool_.host_,
stream_info_, {});
response_decoder_ = &decoder;
return nullptr;
}));
TestRequestHeaderMapImpl copy(message_->headers());
copy.addCopy("x-envoy-internal", "true");
copy.addCopy("x-forwarded-for", "127.0.0.1");
copy.addCopy(":scheme", "http");
EXPECT_CALL(stream_encoder_, encodeHeaders(HeaderMapEqualRef(©), false));
EXPECT_CALL(stream_encoder_, encodeData(BufferEqual(&data), true));
auto* request = client_.send(std::move(message_), callbacks_,
AsyncClient::RequestOptions().setDiscardResponseBody(true));
EXPECT_NE(request, nullptr);
EXPECT_CALL(callbacks_, onBeforeFinalizeUpstreamSpan(_, _));
EXPECT_CALL(callbacks_, onSuccess_(_, _))
.WillOnce(Invoke([](const AsyncClient::Request&, ResponseMessage* response) -> void {
// Verify that there is zero response body.
EXPECT_EQ(response->body().length(), 0);
}));
ResponseHeaderMapPtr response_headers(new TestResponseHeaderMapImpl{{":status", "200"}});
response_decoder_->decodeHeaders(std::move(response_headers), false);
response_decoder_->decodeData(data, true);
EXPECT_EQ(
1UL,
cm_.thread_local_cluster_.cluster_.info_->stats_store_.counter("upstream_rq_200").value());
EXPECT_EQ(1UL, cm_.thread_local_cluster_.cluster_.info_->stats_store_
.counter("internal.upstream_rq_200")
.value());
}
TEST_F(AsyncClientImplTest, LargeResponseBody) {
message_->body().add("test body");
Buffer::Instance& data = message_->body();
EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _, _))
.WillOnce(Invoke(
[&](ResponseDecoder& decoder, ConnectionPool::Callbacks& callbacks,
const ConnectionPool::Instance::StreamOptions&) -> ConnectionPool::Cancellable* {
callbacks.onPoolReady(stream_encoder_, cm_.thread_local_cluster_.conn_pool_.host_,
stream_info_, {});
response_decoder_ = &decoder;
return nullptr;
}));
TestRequestHeaderMapImpl copy(message_->headers());
copy.addCopy("x-envoy-internal", "true");
copy.addCopy("x-forwarded-for", "127.0.0.1");
copy.addCopy(":scheme", "http");
EXPECT_CALL(stream_encoder_, encodeHeaders(HeaderMapEqualRef(©), false));
EXPECT_CALL(stream_encoder_, encodeData(BufferEqual(&data), true));
ON_CALL(factory_context_.runtime_loader_.snapshot_,
getInteger(AsyncClientImpl::ResponseBufferLimit, kBufferLimitForResponse))
.WillByDefault(Return(100));
auto* request = client_.send(std::move(message_), callbacks_, AsyncClient::RequestOptions());
EXPECT_NE(request, nullptr);
EXPECT_CALL(callbacks_, onBeforeFinalizeUpstreamSpan(_, _));
EXPECT_CALL(callbacks_, onFailure(_, AsyncClient::FailureReason::ExceedResponseBufferLimit));
Buffer::InstancePtr large_body{new Buffer::OwnedImpl(std::string(100 + 1, 'a'))};
ResponseHeaderMapPtr response_headers(new TestResponseHeaderMapImpl{{":status", "200"}});
response_decoder_->decodeHeaders(std::move(response_headers), false);
response_decoder_->decodeData(*large_body, true);
EXPECT_EQ(large_body->length(), 0);
}
TEST_F(AsyncClientImplTest, LargeResponseBodyMultipleRead) {
message_->body().add("test body");
Buffer::Instance& data = message_->body();
EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _, _))
.WillOnce(Invoke(
[&](ResponseDecoder& decoder, ConnectionPool::Callbacks& callbacks,
const ConnectionPool::Instance::StreamOptions&) -> ConnectionPool::Cancellable* {
callbacks.onPoolReady(stream_encoder_, cm_.thread_local_cluster_.conn_pool_.host_,
stream_info_, {});
response_decoder_ = &decoder;
return nullptr;
}));
TestRequestHeaderMapImpl copy(message_->headers());
copy.addCopy("x-envoy-internal", "true");
copy.addCopy("x-forwarded-for", "127.0.0.1");
copy.addCopy(":scheme", "http");
EXPECT_CALL(stream_encoder_, encodeHeaders(HeaderMapEqualRef(©), false));
EXPECT_CALL(stream_encoder_, encodeData(BufferEqual(&data), true));
ON_CALL(factory_context_.runtime_loader_.snapshot_,
getInteger(AsyncClientImpl::ResponseBufferLimit, kBufferLimitForResponse))
.WillByDefault(Return(100));
auto* request = client_.send(std::move(message_), callbacks_, AsyncClient::RequestOptions());
EXPECT_NE(request, nullptr);
EXPECT_CALL(callbacks_, onBeforeFinalizeUpstreamSpan(_, _));
EXPECT_CALL(callbacks_, onFailure(_, AsyncClient::FailureReason::ExceedResponseBufferLimit));
Buffer::InstancePtr large_body{new Buffer::OwnedImpl(std::string(50, 'a'))};
Buffer::InstancePtr large_body_second{new Buffer::OwnedImpl(std::string(50, 'a'))};
Buffer::InstancePtr large_body_third{new Buffer::OwnedImpl(std::string(2, 'a'))};
ResponseHeaderMapPtr response_headers(new TestResponseHeaderMapImpl{{":status", "200"}});
response_decoder_->decodeHeaders(std::move(response_headers), false);
response_decoder_->decodeData(*large_body, false);
response_decoder_->decodeData(*large_body_second, false);
response_decoder_->decodeData(*large_body_third, true);
}
TEST_F(AsyncClientImplTest, BasicOngoingRequest) {
auto headers = std::make_unique<TestRequestHeaderMapImpl>();
HttpTestUtility::addDefaultHeaders(*headers);
TestRequestHeaderMapImpl headers_copy = *headers;
Buffer::OwnedImpl data("test data");
const Buffer::OwnedImpl data_copy(data.toString());
auto trailers = std::make_unique<TestRequestTrailerMapImpl>();
trailers->addCopy("some", "trailer");
const TestRequestTrailerMapImpl trailers_copy = *trailers;
EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _, _))
.WillOnce(Invoke(
[&](ResponseDecoder& decoder, ConnectionPool::Callbacks& callbacks,
const ConnectionPool::Instance::StreamOptions&) -> ConnectionPool::Cancellable* {
callbacks.onPoolReady(stream_encoder_, cm_.thread_local_cluster_.conn_pool_.host_,
stream_info_, {});
response_decoder_ = &decoder;
return nullptr;
}));
headers_copy.addCopy("x-envoy-internal", "true");
headers_copy.addCopy("x-forwarded-for", "127.0.0.1");
EXPECT_CALL(stream_encoder_, encodeHeaders(HeaderMapEqualRef(&headers_copy), false));
EXPECT_CALL(stream_encoder_, encodeData(BufferEqual(&data_copy), false));
EXPECT_CALL(stream_encoder_, encodeTrailers(HeaderMapEqualRef(&trailers_copy)));
AsyncClient::OngoingRequest* request =
client_.startRequest(std::move(headers), callbacks_, AsyncClient::RequestOptions());
EXPECT_NE(request, nullptr);
request->sendData(data, false);
request->captureAndSendTrailers(std::move(trailers));
expectSuccess(request, 200);
ResponseHeaderMapPtr response_headers(new TestResponseHeaderMapImpl{{":status", "200"}});
response_decoder_->decodeHeaders(std::move(response_headers), false);
Buffer::OwnedImpl response_data("test data");
response_decoder_->decodeData(response_data, true);
EXPECT_EQ(
1UL,
cm_.thread_local_cluster_.cluster_.info_->stats_store_.counter("upstream_rq_200").value());
EXPECT_EQ(1UL, cm_.thread_local_cluster_.cluster_.info_->stats_store_
.counter("internal.upstream_rq_200")
.value());
}
TEST_F(AsyncClientImplTest, OngoingRequestWithWatermarking) {
auto headers = std::make_unique<TestRequestHeaderMapImpl>();
HttpTestUtility::addDefaultHeaders(*headers);
TestRequestHeaderMapImpl headers_copy = *headers;
headers_copy.addCopy("x-envoy-internal", "true");
headers_copy.addCopy("x-forwarded-for", "127.0.0.1");
Buffer::OwnedImpl data("test data");
const Buffer::OwnedImpl data_copy(data.toString());
EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _, _))
.WillOnce(Invoke(
[&](ResponseDecoder& decoder, ConnectionPool::Callbacks& callbacks,
const ConnectionPool::Instance::StreamOptions&) -> ConnectionPool::Cancellable* {
callbacks.onPoolReady(stream_encoder_, cm_.thread_local_cluster_.conn_pool_.host_,
stream_info_, {});
// Pretend like the connection is already backed up.
dynamic_cast<MockStream&>(stream_encoder_.getStream()).runHighWatermarkCallbacks();
response_decoder_ = &decoder;
return nullptr;
}));
EXPECT_CALL(stream_encoder_, encodeHeaders(HeaderMapEqualRef(&headers_copy), false));
auto* request =
client_.startRequest(std::move(headers), callbacks_, AsyncClient::RequestOptions());
EXPECT_NE(request, nullptr);
StrictMock<MockSidestreamWatermarkCallbacks> watermark_callbacks;
// Registering a new watermark callback should note that the high watermark has already been hit.
EXPECT_CALL(watermark_callbacks, onSidestreamAboveHighWatermark());
request->setWatermarkCallbacks(watermark_callbacks);
// Upstream gets unblocked.
EXPECT_CALL(watermark_callbacks, onSidestreamBelowLowWatermark());
dynamic_cast<MockStream&>(stream_encoder_.getStream()).runLowWatermarkCallbacks();
EXPECT_CALL(stream_encoder_, encodeData(BufferEqual(&data_copy), false));
request->sendData(data, false);
// Blocked again.
EXPECT_CALL(watermark_callbacks, onSidestreamAboveHighWatermark());
dynamic_cast<MockStream&>(stream_encoder_.getStream()).runHighWatermarkCallbacks();
// Clear the callback, which calls the low watermark function.
EXPECT_CALL(watermark_callbacks, onSidestreamBelowLowWatermark());
request->removeWatermarkCallbacks();
// Add the callback back.
EXPECT_CALL(watermark_callbacks, onSidestreamAboveHighWatermark());
request->setWatermarkCallbacks(watermark_callbacks);
EXPECT_CALL(stream_encoder_, encodeData(BufferStringEqual(""), true));
Buffer::OwnedImpl empty;
request->sendData(empty, true);
ResponseHeaderMapPtr response_headers(new TestResponseHeaderMapImpl{{":status", "200"}});
// On request end, we expect to run the low watermark callbacks.
EXPECT_CALL(watermark_callbacks, onSidestreamBelowLowWatermark());
response_decoder_->decodeHeaders(std::move(response_headers), true);
}
TEST_F(AsyncClientImplTest, OngoingRequestWithWatermarkingAndReset) {
auto headers = std::make_unique<TestRequestHeaderMapImpl>();
HttpTestUtility::addDefaultHeaders(*headers);
TestRequestHeaderMapImpl headers_copy = *headers;
headers_copy.addCopy("x-envoy-internal", "true");
headers_copy.addCopy("x-forwarded-for", "127.0.0.1");
Buffer::OwnedImpl data("test data");
const Buffer::OwnedImpl data_copy(data.toString());
EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _, _))
.WillOnce(Invoke(
[&](ResponseDecoder& decoder, ConnectionPool::Callbacks& callbacks,
const ConnectionPool::Instance::StreamOptions&) -> ConnectionPool::Cancellable* {
callbacks.onPoolReady(stream_encoder_, cm_.thread_local_cluster_.conn_pool_.host_,
stream_info_, {});
response_decoder_ = &decoder;
return nullptr;
}));
EXPECT_CALL(stream_encoder_, encodeHeaders(HeaderMapEqualRef(&headers_copy), false));
auto* request =
client_.startRequest(std::move(headers), callbacks_, AsyncClient::RequestOptions());
EXPECT_NE(request, nullptr);
StrictMock<MockSidestreamWatermarkCallbacks> watermark_callbacks;
request->setWatermarkCallbacks(watermark_callbacks);
EXPECT_CALL(stream_encoder_, encodeData(BufferEqual(&data_copy), false));
request->sendData(data, false);
// Upstream is blocked.
EXPECT_CALL(watermark_callbacks, onSidestreamAboveHighWatermark());
dynamic_cast<MockStream&>(stream_encoder_.getStream()).runHighWatermarkCallbacks();
// Reset the stream, which will call the low watermark callbacks.
EXPECT_CALL(watermark_callbacks, onSidestreamBelowLowWatermark());
expectSuccess(request, 503);
stream_encoder_.getStream().resetStream(StreamResetReason::RemoteReset);
}
TEST_F(AsyncClientImplTest, OngoingRequestWithResetAfterCompletion) {
auto headers = std::make_unique<TestRequestHeaderMapImpl>();
HttpTestUtility::addDefaultHeaders(*headers);
TestRequestHeaderMapImpl headers_copy = *headers;
Buffer::OwnedImpl data("test data");
const Buffer::OwnedImpl data_copy(data.toString());
EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _, _))
.WillOnce(Invoke(
[&](ResponseDecoder& decoder, ConnectionPool::Callbacks& callbacks,
const ConnectionPool::Instance::StreamOptions&) -> ConnectionPool::Cancellable* {
callbacks.onPoolReady(stream_encoder_, cm_.thread_local_cluster_.conn_pool_.host_,
stream_info_, {});
response_decoder_ = &decoder;
return nullptr;
}));
headers_copy.addCopy("x-envoy-internal", "true");
headers_copy.addCopy("x-forwarded-for", "127.0.0.1");
EXPECT_CALL(stream_encoder_, encodeHeaders(HeaderMapEqualRef(&headers_copy), false));
EXPECT_CALL(stream_encoder_, encodeData(BufferEqual(&data_copy), true));
AsyncClient::OngoingRequest* request =
client_.startRequest(std::move(headers), callbacks_, AsyncClient::RequestOptions());
EXPECT_NE(request, nullptr);
request->sendData(data, true);
expectSuccess(request, 200);
ResponseHeaderMapPtr response_headers(new TestResponseHeaderMapImpl{{":status", "200"}});
response_decoder_->decodeHeaders(std::move(response_headers), true);
request->reset();
EXPECT_EQ(
1UL,
cm_.thread_local_cluster_.cluster_.info_->stats_store_.counter("upstream_rq_200").value());
EXPECT_EQ(1UL, cm_.thread_local_cluster_.cluster_.info_->stats_store_
.counter("internal.upstream_rq_200")
.value());
}
TEST_F(AsyncClientImplTracingTest, Basic) {
Tracing::MockSpan* child_span{new Tracing::MockSpan()};
message_->body().add("test body");
Buffer::Instance& data = message_->body();
EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _, _))
.WillOnce(Invoke(
[&](ResponseDecoder& decoder, ConnectionPool::Callbacks& callbacks,
const ConnectionPool::Instance::StreamOptions&) -> ConnectionPool::Cancellable* {
callbacks.onPoolReady(stream_encoder_, cm_.thread_local_cluster_.conn_pool_.host_,
stream_info_, {});
response_decoder_ = &decoder;
return nullptr;
}));
TestRequestHeaderMapImpl copy(message_->headers());
copy.addCopy("x-envoy-internal", "true");
copy.addCopy("x-forwarded-for", "127.0.0.1");
copy.addCopy(":scheme", "http");
EXPECT_CALL(parent_span_, spawnChild_(_, "async fake_cluster egress", _))
.WillOnce(Return(child_span));
AsyncClient::RequestOptions options = AsyncClient::RequestOptions().setParentSpan(parent_span_);
EXPECT_CALL(*child_span, setSampled(true));
EXPECT_CALL(*child_span, injectContext(_, _));
auto* request = client_.send(std::move(message_), callbacks_, options);
EXPECT_NE(request, nullptr);
expectSuccess(request, 200);
EXPECT_CALL(*child_span, setTag(Eq("onBeforeFinalizeUpstreamSpan"), Eq("called")));
EXPECT_CALL(*child_span,
setTag(Eq(Tracing::Tags::get().Component), Eq(Tracing::Tags::get().Proxy)));
EXPECT_CALL(*child_span, setTag(Eq(Tracing::Tags::get().HttpProtocol), Eq("HTTP/1.1")));
EXPECT_CALL(*child_span, setTag(Eq(Tracing::Tags::get().UpstreamAddress), Eq("10.0.0.1:443")));
EXPECT_CALL(*child_span, setTag(Eq(Tracing::Tags::get().PeerAddress), Eq("10.0.0.1:443")));
EXPECT_CALL(*child_span, setTag(Eq(Tracing::Tags::get().UpstreamCluster), Eq("fake_cluster")));
EXPECT_CALL(*child_span,
setTag(Eq(Tracing::Tags::get().UpstreamClusterName), Eq("observability_name")));
EXPECT_CALL(*child_span, setTag(Eq(Tracing::Tags::get().HttpStatusCode), Eq("200")));
EXPECT_CALL(*child_span, setTag(Eq(Tracing::Tags::get().ResponseFlags), Eq("-")));
EXPECT_CALL(*child_span, finishSpan());
ResponseHeaderMapPtr response_headers(new TestResponseHeaderMapImpl{{":status", "200"}});
response_decoder_->decodeHeaders(std::move(response_headers), false);
response_decoder_->decodeData(data, true);
EXPECT_TRUE(stats_store_.findCounterByString("http.async-client.rq_total").has_value());
}
TEST_F(AsyncClientImplTracingTest, BasicNamedChildSpan) {
Tracing::MockSpan* child_span{new Tracing::MockSpan()};
message_->body().add("test body");
Buffer::Instance& data = message_->body();
EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _, _))
.WillOnce(Invoke(
[&](ResponseDecoder& decoder, ConnectionPool::Callbacks& callbacks,
const ConnectionPool::Instance::StreamOptions&) -> ConnectionPool::Cancellable* {
callbacks.onPoolReady(stream_encoder_, cm_.thread_local_cluster_.conn_pool_.host_,
stream_info_, {});
response_decoder_ = &decoder;
return nullptr;
}));
TestRequestHeaderMapImpl copy(message_->headers());
copy.addCopy("x-envoy-internal", "true");
copy.addCopy("x-forwarded-for", "127.0.0.1");
copy.addCopy(":scheme", "http");
EXPECT_CALL(parent_span_, spawnChild_(_, child_span_name_, _)).WillOnce(Return(child_span));
AsyncClient::RequestOptions options = AsyncClient::RequestOptions()
.setParentSpan(parent_span_)
.setChildSpanName(child_span_name_)
.setSampled(false);
EXPECT_CALL(*child_span, setSampled(false));
EXPECT_CALL(*child_span, injectContext(_, _));
auto* request = client_.send(std::move(message_), callbacks_, options);
EXPECT_NE(request, nullptr);
expectSuccess(request, 200);
EXPECT_CALL(*child_span, setTag(Eq("onBeforeFinalizeUpstreamSpan"), Eq("called")));
EXPECT_CALL(*child_span,
setTag(Eq(Tracing::Tags::get().Component), Eq(Tracing::Tags::get().Proxy)));
EXPECT_CALL(*child_span, setTag(Eq(Tracing::Tags::get().HttpProtocol), Eq("HTTP/1.1")));
EXPECT_CALL(*child_span, setTag(Eq(Tracing::Tags::get().UpstreamAddress), Eq("10.0.0.1:443")));
EXPECT_CALL(*child_span, setTag(Eq(Tracing::Tags::get().PeerAddress), Eq("10.0.0.1:443")));
EXPECT_CALL(*child_span, setTag(Eq(Tracing::Tags::get().UpstreamCluster), Eq("fake_cluster")));
EXPECT_CALL(*child_span,
setTag(Eq(Tracing::Tags::get().UpstreamClusterName), Eq("observability_name")));
EXPECT_CALL(*child_span, setTag(Eq(Tracing::Tags::get().HttpStatusCode), Eq("200")));
EXPECT_CALL(*child_span, setTag(Eq(Tracing::Tags::get().ResponseFlags), Eq("-")));
EXPECT_CALL(*child_span, finishSpan());
ResponseHeaderMapPtr response_headers(new TestResponseHeaderMapImpl{{":status", "200"}});
response_decoder_->decodeHeaders(std::move(response_headers), false);
response_decoder_->decodeData(data, true);
}
TEST_F(AsyncClientImplTracingTest, BasicNamedChildSpanKeepParentSampling) {
Tracing::MockSpan* child_span{new Tracing::MockSpan()};
message_->body().add("test body");
Buffer::Instance& data = message_->body();
EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _, _))
.WillOnce(Invoke(
[&](ResponseDecoder& decoder, ConnectionPool::Callbacks& callbacks,
const ConnectionPool::Instance::StreamOptions&) -> ConnectionPool::Cancellable* {
callbacks.onPoolReady(stream_encoder_, cm_.thread_local_cluster_.conn_pool_.host_,
stream_info_, {});
response_decoder_ = &decoder;
return nullptr;
}));
TestRequestHeaderMapImpl copy(message_->headers());
copy.addCopy("x-envoy-internal", "true");
copy.addCopy("x-forwarded-for", "127.0.0.1");
copy.addCopy(":scheme", "http");
EXPECT_CALL(parent_span_, spawnChild_(_, child_span_name_, _)).WillOnce(Return(child_span));
AsyncClient::RequestOptions options = AsyncClient::RequestOptions()
.setParentSpan(parent_span_)
.setChildSpanName(child_span_name_)
.setSampled(absl::nullopt);
EXPECT_CALL(*child_span, setSampled(_)).Times(0);
EXPECT_CALL(*child_span, injectContext(_, _));
auto* request = client_.send(std::move(message_), callbacks_, options);
EXPECT_NE(request, nullptr);
expectSuccess(request, 200);
EXPECT_CALL(*child_span, setTag(Eq("onBeforeFinalizeUpstreamSpan"), Eq("called")));
EXPECT_CALL(*child_span,
setTag(Eq(Tracing::Tags::get().Component), Eq(Tracing::Tags::get().Proxy)));
EXPECT_CALL(*child_span, setTag(Eq(Tracing::Tags::get().HttpProtocol), Eq("HTTP/1.1")));
EXPECT_CALL(*child_span, setTag(Eq(Tracing::Tags::get().UpstreamAddress), Eq("10.0.0.1:443")));
EXPECT_CALL(*child_span, setTag(Eq(Tracing::Tags::get().PeerAddress), Eq("10.0.0.1:443")));
EXPECT_CALL(*child_span, setTag(Eq(Tracing::Tags::get().UpstreamCluster), Eq("fake_cluster")));
EXPECT_CALL(*child_span,
setTag(Eq(Tracing::Tags::get().UpstreamClusterName), Eq("observability_name")));
EXPECT_CALL(*child_span, setTag(Eq(Tracing::Tags::get().HttpStatusCode), Eq("200")));
EXPECT_CALL(*child_span, setTag(Eq(Tracing::Tags::get().ResponseFlags), Eq("-")));
EXPECT_CALL(*child_span, finishSpan());
ResponseHeaderMapPtr response_headers(new TestResponseHeaderMapImpl{{":status", "200"}});
response_decoder_->decodeHeaders(std::move(response_headers), false);
response_decoder_->decodeData(data, true);
}
TEST_F(AsyncClientImplTest, BasicHashPolicy) {
message_->body().add("test body");
Buffer::Instance& data = message_->body();
EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _, _))
.WillOnce(Invoke(
[&](ResponseDecoder& decoder, ConnectionPool::Callbacks& callbacks,
const ConnectionPool::Instance::StreamOptions&) -> ConnectionPool::Cancellable* {
callbacks.onPoolReady(stream_encoder_, cm_.thread_local_cluster_.conn_pool_.host_,
stream_info_, {});
response_decoder_ = &decoder;
return nullptr;
}));
EXPECT_CALL(cm_.thread_local_cluster_, httpConnPool(_, _, _, _))
.WillOnce(Invoke([&](Upstream::HostConstSharedPtr, Upstream::ResourcePriority, auto,
Upstream::LoadBalancerContext* context) {
// this is the hash of :path header value "/"
// the hash stability across releases is expected, so test the hash value directly here.
EXPECT_EQ(16761507700594825962UL, context->computeHashKey().value());
return Upstream::HttpPoolData([]() {}, &cm_.thread_local_cluster_.conn_pool_);
}));
TestRequestHeaderMapImpl copy(message_->headers());
copy.addCopy("x-envoy-internal", "true");
copy.addCopy("x-forwarded-for", "127.0.0.1");
copy.addCopy(":scheme", "http");
EXPECT_CALL(stream_encoder_, encodeHeaders(HeaderMapEqualRef(©), false));
EXPECT_CALL(stream_encoder_, encodeData(BufferEqual(&data), true));
AsyncClient::RequestOptions options;
Protobuf::RepeatedPtrField<envoy::config::route::v3::RouteAction::HashPolicy> hash_policy;
hash_policy.Add()->mutable_header()->set_header_name(":path");
options.setHashPolicy(hash_policy);
auto* request = client_.send(std::move(message_), callbacks_, options);
EXPECT_NE(request, nullptr);
expectSuccess(request, 200);
ResponseHeaderMapPtr response_headers(new TestResponseHeaderMapImpl{{":status", "200"}});
response_decoder_->decodeHeaders(std::move(response_headers), false);
response_decoder_->decodeData(data, true);
}
TEST_F(AsyncClientImplTest, WithoutMetadata) {
message_->body().add("test body");
Buffer::Instance& data = message_->body();
EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _, _))
.WillOnce(Invoke(
[&](ResponseDecoder& decoder, ConnectionPool::Callbacks& callbacks,
const ConnectionPool::Instance::StreamOptions&) -> ConnectionPool::Cancellable* {
callbacks.onPoolReady(stream_encoder_, cm_.thread_local_cluster_.conn_pool_.host_,
stream_info_, {});
response_decoder_ = &decoder;
return nullptr;
}));
EXPECT_CALL(cm_.thread_local_cluster_, httpConnPool(_, _, _, _))
.WillOnce(Invoke([&](Upstream::HostConstSharedPtr, Upstream::ResourcePriority,
absl::optional<Http::Protocol>, Upstream::LoadBalancerContext* context) {
EXPECT_EQ(context->metadataMatchCriteria(), nullptr);
return Upstream::HttpPoolData([]() {}, &cm_.thread_local_cluster_.conn_pool_);
}));
TestRequestHeaderMapImpl copy(message_->headers());
copy.addCopy("x-envoy-internal", "true");
copy.addCopy("x-forwarded-for", "127.0.0.1");
copy.addCopy(":scheme", "http");
EXPECT_CALL(stream_encoder_, encodeHeaders(HeaderMapEqualRef(©), false));
AsyncClient::RequestOptions options;
envoy::config::core::v3::Metadata metadata;
metadata.mutable_filter_metadata()->insert(
{"fake_test_domain", MessageUtil::keyValueStruct("fake_test_key", "fake_test_value")});
options.setMetadata(metadata);
auto* request = client_.send(std::move(message_), callbacks_, options);
EXPECT_NE(request, nullptr);
expectSuccess(request, 200);
ResponseHeaderMapPtr response_headers(new TestResponseHeaderMapImpl{{":status", "200"}});
response_decoder_->decodeHeaders(std::move(response_headers), false);
response_decoder_->decodeData(data, true);
}
TEST_F(AsyncClientImplTest, WithMetadata) {
message_->body().add("test body");
Buffer::Instance& data = message_->body();
EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _, _))
.WillOnce(Invoke(
[&](ResponseDecoder& decoder, ConnectionPool::Callbacks& callbacks,
const ConnectionPool::Instance::StreamOptions&) -> ConnectionPool::Cancellable* {
callbacks.onPoolReady(stream_encoder_, cm_.thread_local_cluster_.conn_pool_.host_,
stream_info_, {});
response_decoder_ = &decoder;
return nullptr;
}));
EXPECT_CALL(cm_.thread_local_cluster_, httpConnPool(_, _, _, _))
.WillOnce(Invoke([&](Upstream::HostConstSharedPtr, Upstream::ResourcePriority,
absl::optional<Http::Protocol>, Upstream::LoadBalancerContext* context) {
EXPECT_NE(context->metadataMatchCriteria(), nullptr);
EXPECT_EQ(context->metadataMatchCriteria()->metadataMatchCriteria().at(0)->name(),
"fake_test_key");
return Upstream::HttpPoolData([]() {}, &cm_.thread_local_cluster_.conn_pool_);
}));
TestRequestHeaderMapImpl copy(message_->headers());
copy.addCopy("x-envoy-internal", "true");
copy.addCopy("x-forwarded-for", "127.0.0.1");
copy.addCopy(":scheme", "http");
EXPECT_CALL(stream_encoder_, encodeHeaders(HeaderMapEqualRef(©), false));
AsyncClient::RequestOptions options;
envoy::config::core::v3::Metadata metadata;
metadata.mutable_filter_metadata()->insert(
{Envoy::Config::MetadataFilters::get().ENVOY_LB,
MessageUtil::keyValueStruct("fake_test_key", "fake_test_value")});
options.setMetadata(metadata);
auto* request = client_.send(std::move(message_), callbacks_, options);
EXPECT_NE(request, nullptr);
expectSuccess(request, 200);
ResponseHeaderMapPtr response_headers(new TestResponseHeaderMapImpl{{":status", "200"}});
response_decoder_->decodeHeaders(std::move(response_headers), false);
response_decoder_->decodeData(data, true);
}
class TestStateObject : public StreamInfo::FilterState::Object {
public:
TestStateObject(std::string value) : value_(value) {}
const std::string& value() const { return value_; }
private:
std::string value_;
};
TEST_F(AsyncClientImplTest, WithFilterState) {
message_->body().add("test-body");
Buffer::Instance& data = message_->body();
EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _, _))
.WillOnce(Invoke(
[&](ResponseDecoder& decoder, ConnectionPool::Callbacks& callbacks,
const ConnectionPool::Instance::StreamOptions&) -> ConnectionPool::Cancellable* {
callbacks.onPoolReady(stream_encoder_, cm_.thread_local_cluster_.conn_pool_.host_,
stream_info_, {});
response_decoder_ = &decoder;
return nullptr;
}));
EXPECT_CALL(cm_.thread_local_cluster_, httpConnPool(_, _, _, _))
.WillOnce(Invoke([&](Upstream::HostConstSharedPtr, Upstream::ResourcePriority,
absl::optional<Http::Protocol>, Upstream::LoadBalancerContext* context) {
StreamInfo::FilterStateSharedPtr filter_state = context->requestStreamInfo()->filterState();
const TestStateObject* state =
filter_state->getDataReadOnly<TestStateObject>("test-filter");
EXPECT_NE(state, nullptr);
EXPECT_EQ(state->value(), "stored-test-state");
return Upstream::HttpPoolData([]() {}, &cm_.thread_local_cluster_.conn_pool_);
}));
TestRequestHeaderMapImpl copy(message_->headers());
copy.addCopy("x-envoy-internal", "true");
copy.addCopy("x-forwarded-for", "127.0.0.1");
copy.addCopy(":scheme", "http");
EXPECT_CALL(stream_encoder_, encodeHeaders(HeaderMapEqualRef(©), false));
AsyncClient::RequestOptions options;
auto state_object = std::make_shared<TestStateObject>("stored-test-state");
auto filter_state =
std::make_shared<StreamInfo::FilterStateImpl>(StreamInfo::FilterState::LifeSpan::FilterChain);
filter_state->setData("test-filter", state_object, StreamInfo::FilterState::StateType::Mutable);
options.setFilterState(filter_state);
auto* request = client_.send(std::move(message_), callbacks_, options);
EXPECT_NE(request, nullptr);
expectSuccess(request, 200);
ResponseHeaderMapPtr response_headers(new TestResponseHeaderMapImpl{{":status", "200"}});
response_decoder_->decodeHeaders(std::move(response_headers), false);
response_decoder_->decodeData(data, true);
}
TEST_F(AsyncClientImplTest, Retry) {
ON_CALL(factory_context_.runtime_loader_.snapshot_, featureEnabled("upstream.use_retry", 100))
.WillByDefault(Return(true));
RequestMessage* message_copy = message_.get();
message_->body().add("test body");
Buffer::Instance& data = message_->body();
EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _, _))
.WillOnce(Invoke(
[&](ResponseDecoder& decoder, ConnectionPool::Callbacks& callbacks,
const ConnectionPool::Instance::StreamOptions&) -> ConnectionPool::Cancellable* {
callbacks.onPoolReady(stream_encoder_, cm_.thread_local_cluster_.conn_pool_.host_,
stream_info_, {});
response_decoder_ = &decoder;
return nullptr;
}));
EXPECT_CALL(stream_encoder_, encodeHeaders(HeaderMapEqualRef(&message_->headers()), false));
EXPECT_CALL(stream_encoder_, encodeData(BufferEqual(&data), true));
message_->headers().setReferenceEnvoyRetryOn(Headers::get().EnvoyRetryOnValues._5xx);
auto* request = client_.send(std::move(message_), callbacks_, AsyncClient::RequestOptions());
EXPECT_NE(request, nullptr);
// Expect retry and retry timer create.
timer_ = new NiceMock<Event::MockTimer>(&dispatcher_);
ResponseHeaderMapPtr response_headers(new TestResponseHeaderMapImpl{{":status", "503"}});
response_decoder_->decodeHeaders(std::move(response_headers), true);