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grpc/test/cpp/end2end/xds/xds_end2end_test_lib.cc

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// Copyright 2017 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#include "test/cpp/end2end/xds/xds_end2end_test_lib.h"
#include <functional>
#include <map>
#include <memory>
#include <set>
#include <string>
#include <thread>
#include <vector>
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include "absl/memory/memory.h"
#include "absl/strings/str_cat.h"
#include "absl/strings/str_format.h"
#include "absl/strings/str_join.h"
#include "absl/strings/str_replace.h"
#include "absl/strings/string_view.h"
#include "absl/types/optional.h"
#include <grpcpp/security/tls_certificate_provider.h>
#include "src/core/ext/filters/http/server/http_server_filter.h"
#include "src/core/ext/xds/xds_channel_args.h"
#include "src/core/ext/xds/xds_client.h"
#include "src/core/lib/gpr/env.h"
#include "src/core/lib/gpr/tmpfile.h"
#include "src/core/lib/surface/server.h"
#include "src/cpp/client/secure_credentials.h"
#include "src/proto/grpc/testing/xds/v3/router.grpc.pb.h"
#include "test/core/util/resolve_localhost_ip46.h"
#include "test/cpp/util/tls_test_utils.h"
namespace grpc {
namespace testing {
using ::envoy::config::endpoint::v3::ClusterLoadAssignment;
using ::envoy::config::endpoint::v3::HealthStatus;
using ::envoy::config::listener::v3::Listener;
using ::envoy::extensions::filters::network::http_connection_manager::v3::
HttpConnectionManager;
using ::grpc::experimental::ExternalCertificateVerifier;
using ::grpc::experimental::IdentityKeyCertPair;
using ::grpc::experimental::StaticDataCertificateProvider;
//
// XdsEnd2endTest::ServerThread::XdsServingStatusNotifier
//
void XdsEnd2endTest::ServerThread::XdsServingStatusNotifier::
OnServingStatusUpdate(std::string uri, ServingStatusUpdate update) {
grpc_core::MutexLock lock(&mu_);
status_map[uri] = update.status;
cond_.Signal();
}
void XdsEnd2endTest::ServerThread::XdsServingStatusNotifier::
WaitOnServingStatusChange(std::string uri,
grpc::StatusCode expected_status) {
grpc_core::MutexLock lock(&mu_);
std::map<std::string, grpc::Status>::iterator it;
while ((it = status_map.find(uri)) == status_map.end() ||
it->second.error_code() != expected_status) {
cond_.Wait(&mu_);
}
}
//
// XdsEnd2endTest::ServerThread::XdsChannelArgsServerBuilderOption
//
namespace {
// Channel arg pointer vtable for storing xDS channel args in the parent
// channel's channel args.
void* ChannelArgsArgCopy(void* p) {
auto* args = static_cast<grpc_channel_args*>(p);
return grpc_channel_args_copy(args);
}
void ChannelArgsArgDestroy(void* p) {
auto* args = static_cast<grpc_channel_args*>(p);
grpc_channel_args_destroy(args);
}
int ChannelArgsArgCmp(void* a, void* b) {
auto* args_a = static_cast<grpc_channel_args*>(a);
auto* args_b = static_cast<grpc_channel_args*>(b);
return grpc_channel_args_compare(args_a, args_b);
}
const grpc_arg_pointer_vtable kChannelArgsArgVtable = {
ChannelArgsArgCopy, ChannelArgsArgDestroy, ChannelArgsArgCmp};
} // namespace
class XdsEnd2endTest::ServerThread::XdsChannelArgsServerBuilderOption
: public grpc::ServerBuilderOption {
public:
explicit XdsChannelArgsServerBuilderOption(XdsEnd2endTest* test_obj)
: test_obj_(test_obj) {}
void UpdateArguments(grpc::ChannelArguments* args) override {
args->SetString(GRPC_ARG_TEST_ONLY_DO_NOT_USE_IN_PROD_XDS_BOOTSTRAP_CONFIG,
test_obj_->bootstrap_);
args->SetPointerWithVtable(
GRPC_ARG_TEST_ONLY_DO_NOT_USE_IN_PROD_XDS_CLIENT_CHANNEL_ARGS,
&test_obj_->xds_channel_args_, &kChannelArgsArgVtable);
}
void UpdatePlugins(
std::vector<std::unique_ptr<grpc::ServerBuilderPlugin>>* /*plugins*/)
override {}
private:
XdsEnd2endTest* test_obj_;
};
//
// XdsEnd2endTest::ServerThread
//
void XdsEnd2endTest::ServerThread::Start() {
gpr_log(GPR_INFO, "starting %s server on port %d", Type(), port_);
GPR_ASSERT(!running_);
running_ = true;
StartAllServices();
grpc_core::Mutex mu;
// We need to acquire the lock here in order to prevent the notify_one
// by ServerThread::Serve from firing before the wait below is hit.
grpc_core::MutexLock lock(&mu);
grpc_core::CondVar cond;
thread_ = absl::make_unique<std::thread>(
std::bind(&ServerThread::Serve, this, &mu, &cond));
cond.Wait(&mu);
gpr_log(GPR_INFO, "%s server startup complete", Type());
}
void XdsEnd2endTest::ServerThread::Shutdown() {
if (!running_) return;
gpr_log(GPR_INFO, "%s about to shutdown", Type());
ShutdownAllServices();
server_->Shutdown(grpc_timeout_milliseconds_to_deadline(0));
thread_->join();
gpr_log(GPR_INFO, "%s shutdown completed", Type());
running_ = false;
}
void XdsEnd2endTest::ServerThread::StopListeningAndSendGoaways() {
gpr_log(GPR_INFO, "%s sending GOAWAYs", Type());
{
grpc_core::ExecCtx exec_ctx;
auto* server = grpc_core::Server::FromC(server_->c_server());
server->StopListening();
server->SendGoaways();
}
gpr_log(GPR_INFO, "%s done sending GOAWAYs", Type());
}
void XdsEnd2endTest::ServerThread::Serve(grpc_core::Mutex* mu,
grpc_core::CondVar* cond) {
// We need to acquire the lock here in order to prevent the notify_one
// below from firing before its corresponding wait is executed.
grpc_core::MutexLock lock(mu);
std::string server_address = absl::StrCat("localhost:", port_);
if (use_xds_enabled_server_) {
XdsServerBuilder builder;
if (GetParam().bootstrap_source() ==
XdsTestType::kBootstrapFromChannelArg) {
builder.SetOption(
absl::make_unique<XdsChannelArgsServerBuilderOption>(test_obj_));
}
builder.set_status_notifier(&notifier_);
builder.experimental().set_drain_grace_time(
test_obj_->xds_drain_grace_time_ms_);
builder.AddListeningPort(server_address, Credentials());
// Allow gRPC Core's HTTP server to accept PUT requests for testing
// purposes.
if (allow_put_requests_) {
builder.AddChannelArgument(
GRPC_ARG_DO_NOT_USE_UNLESS_YOU_HAVE_PERMISSION_FROM_GRPC_TEAM_ALLOW_BROKEN_PUT_REQUESTS,
true);
}
RegisterAllServices(&builder);
server_ = builder.BuildAndStart();
} else {
ServerBuilder builder;
builder.AddListeningPort(server_address, Credentials());
RegisterAllServices(&builder);
server_ = builder.BuildAndStart();
}
cond->Signal();
}
//
// XdsEnd2endTest::BackendServerThread
//
XdsEnd2endTest::BackendServerThread::BackendServerThread(
XdsEnd2endTest* test_obj, bool use_xds_enabled_server)
: ServerThread(test_obj, use_xds_enabled_server) {
if (use_xds_enabled_server) {
test_obj->SetServerListenerNameAndRouteConfiguration(
test_obj->balancer_.get(), test_obj->default_server_listener_, port(),
test_obj->default_server_route_config_);
}
}
std::shared_ptr<ServerCredentials>
XdsEnd2endTest::BackendServerThread::Credentials() {
if (GetParam().use_xds_credentials()) {
if (use_xds_enabled_server()) {
// We are testing server's use of XdsServerCredentials
return XdsServerCredentials(InsecureServerCredentials());
} else {
// We are testing client's use of XdsCredentials
std::string root_cert = ReadFile(kCaCertPath);
std::string identity_cert = ReadFile(kServerCertPath);
std::string private_key = ReadFile(kServerKeyPath);
std::vector<experimental::IdentityKeyCertPair> identity_key_cert_pairs = {
{private_key, identity_cert}};
auto certificate_provider =
std::make_shared<grpc::experimental::StaticDataCertificateProvider>(
root_cert, identity_key_cert_pairs);
grpc::experimental::TlsServerCredentialsOptions options(
certificate_provider);
options.watch_root_certs();
options.watch_identity_key_cert_pairs();
options.set_cert_request_type(
GRPC_SSL_REQUEST_CLIENT_CERTIFICATE_AND_VERIFY);
return grpc::experimental::TlsServerCredentials(options);
}
}
return ServerThread::Credentials();
}
void XdsEnd2endTest::BackendServerThread::RegisterAllServices(
ServerBuilder* builder) {
builder->RegisterService(&backend_service_);
builder->RegisterService(&backend_service1_);
builder->RegisterService(&backend_service2_);
}
void XdsEnd2endTest::BackendServerThread::StartAllServices() {
backend_service_.Start();
backend_service1_.Start();
backend_service2_.Start();
}
void XdsEnd2endTest::BackendServerThread::ShutdownAllServices() {
backend_service_.Shutdown();
backend_service1_.Shutdown();
backend_service2_.Shutdown();
}
//
// XdsEnd2endTest::BalancerServerThread
//
XdsEnd2endTest::BalancerServerThread::BalancerServerThread(
XdsEnd2endTest* test_obj)
: ServerThread(test_obj, /*use_xds_enabled_server=*/false),
ads_service_(new AdsServiceImpl()),
lrs_service_(new LrsServiceImpl(
(GetParam().enable_load_reporting() ? 20 * grpc_test_slowdown_factor()
: 0),
{kDefaultClusterName})) {}
void XdsEnd2endTest::BalancerServerThread::RegisterAllServices(
ServerBuilder* builder) {
builder->RegisterService(ads_service_->v2_rpc_service());
builder->RegisterService(ads_service_->v3_rpc_service());
builder->RegisterService(lrs_service_->v2_rpc_service());
builder->RegisterService(lrs_service_->v3_rpc_service());
}
void XdsEnd2endTest::BalancerServerThread::StartAllServices() {
ads_service_->Start();
lrs_service_->Start();
}
void XdsEnd2endTest::BalancerServerThread::ShutdownAllServices() {
ads_service_->Shutdown();
lrs_service_->Shutdown();
}
//
// XdsEnd2endTest::BootstrapBuilder
//
std::string XdsEnd2endTest::BootstrapBuilder::Build() {
std::vector<std::string> fields;
fields.push_back(MakeXdsServersText(top_server_));
if (!client_default_listener_resource_name_template_.empty()) {
fields.push_back(
absl::StrCat(" \"client_default_listener_resource_name_template\": \"",
client_default_listener_resource_name_template_, "\""));
}
fields.push_back(MakeNodeText());
if (!server_listener_resource_name_template_.empty()) {
fields.push_back(
absl::StrCat(" \"server_listener_resource_name_template\": \"",
server_listener_resource_name_template_, "\""));
}
fields.push_back(MakeCertificateProviderText());
fields.push_back(MakeAuthorityText());
return absl::StrCat("{", absl::StrJoin(fields, ",\n"), "}");
}
std::string XdsEnd2endTest::BootstrapBuilder::MakeXdsServersText(
absl::string_view server_uri) {
constexpr char kXdsServerTemplate[] =
" \"xds_servers\": [\n"
" {\n"
" \"server_uri\": \"<SERVER_URI>\",\n"
" \"channel_creds\": [\n"
" {\n"
" \"type\": \"fake\"\n"
" }\n"
" ],\n"
" \"server_features\": [<SERVER_FEATURES>]\n"
" }\n"
" ]";
return absl::StrReplaceAll(
kXdsServerTemplate, {{"<SERVER_URI>", server_uri},
{"<SERVER_FEATURES>", (v2_ ? "" : "\"xds_v3\"")}});
}
std::string XdsEnd2endTest::BootstrapBuilder::MakeNodeText() {
constexpr char kXdsNode[] =
" \"node\": {\n"
" \"id\": \"xds_end2end_test\",\n"
" \"cluster\": \"test\",\n"
" \"metadata\": {\n"
" \"foo\": \"bar\"\n"
" },\n"
" \"locality\": {\n"
" \"region\": \"corp\",\n"
" \"zone\": \"svl\",\n"
" \"sub_zone\": \"mp3\"\n"
" }\n"
" }";
return kXdsNode;
}
std::string XdsEnd2endTest::BootstrapBuilder::MakeCertificateProviderText() {
std::vector<std::string> entries;
for (const auto& p : plugins_) {
const std::string& key = p.first;
const PluginInfo& plugin_info = p.second;
std::vector<std::string> fields;
fields.push_back(absl::StrFormat(" \"%s\": {", key));
if (!plugin_info.plugin_config.empty()) {
fields.push_back(
absl::StrFormat(" \"plugin_name\": \"%s\",", plugin_info.name));
fields.push_back(absl::StrCat(" \"config\": {\n",
plugin_info.plugin_config, "\n }"));
} else {
fields.push_back(
absl::StrFormat(" \"plugin_name\": \"%s\"", plugin_info.name));
}
fields.push_back(" }");
entries.push_back(absl::StrJoin(fields, "\n"));
}
return absl::StrCat(" \"certificate_providers\": {\n",
absl::StrJoin(entries, ",\n"), " \n}");
}
std::string XdsEnd2endTest::BootstrapBuilder::MakeAuthorityText() {
std::vector<std::string> entries;
for (const auto& p : authorities_) {
const std::string& name = p.first;
const AuthorityInfo& authority_info = p.second;
std::vector<std::string> fields = {
MakeXdsServersText(authority_info.server)};
if (!authority_info.client_listener_resource_name_template.empty()) {
fields.push_back(absl::StrCat(
"\"client_listener_resource_name_template\": \"",
authority_info.client_listener_resource_name_template, "\""));
}
entries.push_back(absl::StrCat(absl::StrFormat("\"%s\": {\n ", name),
absl::StrJoin(fields, ",\n"), "\n}"));
}
return absl::StrCat("\"authorities\": {\n", absl::StrJoin(entries, ",\n"),
"\n}");
}
//
// XdsEnd2endTest::RpcOptions
//
void XdsEnd2endTest::RpcOptions::SetupRpc(ClientContext* context,
EchoRequest* request) const {
for (const auto& item : metadata) {
context->AddMetadata(item.first, item.second);
}
if (timeout_ms != 0) {
context->set_deadline(grpc_timeout_milliseconds_to_deadline(timeout_ms));
}
if (wait_for_ready) context->set_wait_for_ready(true);
request->set_message(kRequestMessage);
if (server_fail) {
request->mutable_param()->mutable_expected_error()->set_code(
GRPC_STATUS_FAILED_PRECONDITION);
}
if (server_sleep_us != 0) {
request->mutable_param()->set_server_sleep_us(server_sleep_us);
}
if (client_cancel_after_us != 0) {
request->mutable_param()->set_client_cancel_after_us(
client_cancel_after_us);
}
if (skip_cancelled_check) {
request->mutable_param()->set_skip_cancelled_check(true);
}
}
//
// XdsEnd2endTest
//
const char XdsEnd2endTest::kDefaultLocalityRegion[] =
"xds_default_locality_region";
const char XdsEnd2endTest::kDefaultLocalityZone[] = "xds_default_locality_zone";
const char XdsEnd2endTest::kServerName[] = "server.example.com";
const char XdsEnd2endTest::kDefaultRouteConfigurationName[] =
"route_config_name";
const char XdsEnd2endTest::kDefaultClusterName[] = "cluster_name";
const char XdsEnd2endTest::kDefaultEdsServiceName[] = "eds_service_name";
const char XdsEnd2endTest::kDefaultServerRouteConfigurationName[] =
"default_server_route_config_name";
const char XdsEnd2endTest::kCaCertPath[] = "src/core/tsi/test_creds/ca.pem";
const char XdsEnd2endTest::kServerCertPath[] =
"src/core/tsi/test_creds/server1.pem";
const char XdsEnd2endTest::kServerKeyPath[] =
"src/core/tsi/test_creds/server1.key";
const char XdsEnd2endTest::kRequestMessage[] = "Live long and prosper.";
XdsEnd2endTest::XdsEnd2endTest() : balancer_(CreateAndStartBalancer()) {
bool localhost_resolves_to_ipv4 = false;
bool localhost_resolves_to_ipv6 = false;
grpc_core::LocalhostResolves(&localhost_resolves_to_ipv4,
&localhost_resolves_to_ipv6);
ipv6_only_ = !localhost_resolves_to_ipv4 && localhost_resolves_to_ipv6;
// Initialize default xDS resources.
// Construct LDS resource.
default_listener_.set_name(kServerName);
HttpConnectionManager http_connection_manager;
if (!GetParam().use_v2()) {
auto* filter = http_connection_manager.add_http_filters();
filter->set_name("router");
filter->mutable_typed_config()->PackFrom(
envoy::extensions::filters::http::router::v3::Router());
}
default_listener_.mutable_api_listener()->mutable_api_listener()->PackFrom(
http_connection_manager);
// Construct RDS resource.
default_route_config_.set_name(kDefaultRouteConfigurationName);
auto* virtual_host = default_route_config_.add_virtual_hosts();
virtual_host->add_domains("*");
auto* route = virtual_host->add_routes();
route->mutable_match()->set_prefix("");
route->mutable_route()->set_cluster(kDefaultClusterName);
// Construct CDS resource.
default_cluster_.set_name(kDefaultClusterName);
default_cluster_.set_type(Cluster::EDS);
auto* eds_config = default_cluster_.mutable_eds_cluster_config();
eds_config->mutable_eds_config()->mutable_self();
eds_config->set_service_name(kDefaultEdsServiceName);
default_cluster_.set_lb_policy(Cluster::ROUND_ROBIN);
if (GetParam().enable_load_reporting()) {
default_cluster_.mutable_lrs_server()->mutable_self();
}
// Initialize client-side resources on balancer.
SetListenerAndRouteConfiguration(balancer_.get(), default_listener_,
default_route_config_);
balancer_->ads_service()->SetCdsResource(default_cluster_);
// Construct a default server-side RDS resource for tests to use.
default_server_route_config_.set_name(kDefaultServerRouteConfigurationName);
virtual_host = default_server_route_config_.add_virtual_hosts();
virtual_host->add_domains("*");
route = virtual_host->add_routes();
route->mutable_match()->set_prefix("");
route->mutable_non_forwarding_action();
// Construct a default server-side Listener resource
default_server_listener_.mutable_address()
->mutable_socket_address()
->set_address(ipv6_only_ ? "::1" : "127.0.0.1");
default_server_listener_.mutable_default_filter_chain()
->add_filters()
->mutable_typed_config()
->PackFrom(http_connection_manager);
}
void XdsEnd2endTest::TearDown() {
ShutdownAllBackends();
balancer_->Shutdown();
// Clear global xDS channel args, since they will go out of scope
// when this test object is destroyed.
grpc_core::internal::SetXdsChannelArgsForTest(nullptr);
gpr_unsetenv("GRPC_XDS_BOOTSTRAP");
gpr_unsetenv("GRPC_XDS_BOOTSTRAP_CONFIG");
if (bootstrap_file_ != nullptr) {
remove(bootstrap_file_);
gpr_free(bootstrap_file_);
}
}
std::unique_ptr<XdsEnd2endTest::BalancerServerThread>
XdsEnd2endTest::CreateAndStartBalancer() {
std::unique_ptr<BalancerServerThread> balancer =
absl::make_unique<BalancerServerThread>(this);
balancer->Start();
return balancer;
}
std::string XdsEnd2endTest::GetServerListenerName(int port) {
return absl::StrCat("grpc/server?xds.resource.listening_address=",
ipv6_only_ ? "[::1]:" : "127.0.0.1:", port);
}
Listener XdsEnd2endTest::PopulateServerListenerNameAndPort(
const Listener& listener_template, int port) {
Listener listener = listener_template;
listener.set_name(GetServerListenerName(port));
listener.mutable_address()->mutable_socket_address()->set_port_value(port);
return listener;
}
HttpConnectionManager XdsEnd2endTest::ClientHcmAccessor::Unpack(
const Listener& listener) const {
HttpConnectionManager http_connection_manager;
listener.api_listener().api_listener().UnpackTo(&http_connection_manager);
return http_connection_manager;
}
void XdsEnd2endTest::ClientHcmAccessor::Pack(const HttpConnectionManager& hcm,
Listener* listener) const {
auto* api_listener = listener->mutable_api_listener()->mutable_api_listener();
api_listener->PackFrom(hcm);
}
HttpConnectionManager XdsEnd2endTest::ServerHcmAccessor::Unpack(
const Listener& listener) const {
HttpConnectionManager http_connection_manager;
listener.default_filter_chain().filters().at(0).typed_config().UnpackTo(
&http_connection_manager);
return http_connection_manager;
}
void XdsEnd2endTest::ServerHcmAccessor::Pack(const HttpConnectionManager& hcm,
Listener* listener) const {
listener->mutable_default_filter_chain()
->mutable_filters()
->at(0)
.mutable_typed_config()
->PackFrom(hcm);
}
void XdsEnd2endTest::SetListenerAndRouteConfiguration(
BalancerServerThread* balancer, Listener listener,
const RouteConfiguration& route_config, const HcmAccessor& hcm_accessor) {
HttpConnectionManager http_connection_manager = hcm_accessor.Unpack(listener);
if (GetParam().enable_rds_testing()) {
auto* rds = http_connection_manager.mutable_rds();
rds->set_route_config_name(route_config.name());
rds->mutable_config_source()->mutable_self();
balancer->ads_service()->SetRdsResource(route_config);
} else {
*http_connection_manager.mutable_route_config() = route_config;
}
hcm_accessor.Pack(http_connection_manager, &listener);
balancer->ads_service()->SetLdsResource(listener);
}
void XdsEnd2endTest::SetRouteConfiguration(
BalancerServerThread* balancer, const RouteConfiguration& route_config,
const Listener* listener_to_copy) {
if (GetParam().enable_rds_testing()) {
balancer->ads_service()->SetRdsResource(route_config);
} else {
Listener listener(listener_to_copy == nullptr ? default_listener_
: *listener_to_copy);
HttpConnectionManager http_connection_manager;
listener.mutable_api_listener()->mutable_api_listener()->UnpackTo(
&http_connection_manager);
*(http_connection_manager.mutable_route_config()) = route_config;
listener.mutable_api_listener()->mutable_api_listener()->PackFrom(
http_connection_manager);
balancer->ads_service()->SetLdsResource(listener);
}
}
std::vector<XdsEnd2endTest::EdsResourceArgs::Endpoint>
XdsEnd2endTest::CreateEndpointsForBackends(size_t start_index,
size_t stop_index,
HealthStatus health_status,
int lb_weight) {
if (stop_index == 0) stop_index = backends_.size();
std::vector<EdsResourceArgs::Endpoint> endpoints;
for (size_t i = start_index; i < stop_index; ++i) {
endpoints.emplace_back(CreateEndpoint(i, health_status, lb_weight));
}
return endpoints;
}
ClusterLoadAssignment XdsEnd2endTest::BuildEdsResource(
const EdsResourceArgs& args, const char* eds_service_name) {
ClusterLoadAssignment assignment;
assignment.set_cluster_name(eds_service_name);
for (const auto& locality : args.locality_list) {
auto* endpoints = assignment.add_endpoints();
endpoints->mutable_load_balancing_weight()->set_value(locality.lb_weight);
endpoints->set_priority(locality.priority);
endpoints->mutable_locality()->set_region(kDefaultLocalityRegion);
endpoints->mutable_locality()->set_zone(kDefaultLocalityZone);
endpoints->mutable_locality()->set_sub_zone(locality.sub_zone);
for (size_t i = 0; i < locality.endpoints.size(); ++i) {
const int& port = locality.endpoints[i].port;
auto* lb_endpoints = endpoints->add_lb_endpoints();
if (locality.endpoints.size() > i &&
locality.endpoints[i].health_status != HealthStatus::UNKNOWN) {
lb_endpoints->set_health_status(locality.endpoints[i].health_status);
}
if (locality.endpoints.size() > i &&
locality.endpoints[i].lb_weight >= 1) {
lb_endpoints->mutable_load_balancing_weight()->set_value(
locality.endpoints[i].lb_weight);
}
auto* endpoint = lb_endpoints->mutable_endpoint();
auto* address = endpoint->mutable_address();
auto* socket_address = address->mutable_socket_address();
socket_address->set_address(ipv6_only_ ? "::1" : "127.0.0.1");
socket_address->set_port_value(port);
}
}
if (!args.drop_categories.empty()) {
auto* policy = assignment.mutable_policy();
for (const auto& p : args.drop_categories) {
const std::string& name = p.first;
const uint32_t parts_per_million = p.second;
auto* drop_overload = policy->add_drop_overloads();
drop_overload->set_category(name);
auto* drop_percentage = drop_overload->mutable_drop_percentage();
drop_percentage->set_numerator(parts_per_million);
drop_percentage->set_denominator(args.drop_denominator);
}
}
return assignment;
}
void XdsEnd2endTest::ResetBackendCounters(size_t start_index,
size_t stop_index) {
if (stop_index == 0) stop_index = backends_.size();
for (size_t i = start_index; i < stop_index; ++i) {
backends_[i]->backend_service()->ResetCounters();
backends_[i]->backend_service1()->ResetCounters();
backends_[i]->backend_service2()->ResetCounters();
}
}
bool XdsEnd2endTest::SeenBackend(size_t backend_idx,
const RpcService rpc_service) {
switch (rpc_service) {
case SERVICE_ECHO:
if (backends_[backend_idx]->backend_service()->request_count() == 0) {
return false;
}
break;
case SERVICE_ECHO1:
if (backends_[backend_idx]->backend_service1()->request_count() == 0) {
return false;
}
break;
case SERVICE_ECHO2:
if (backends_[backend_idx]->backend_service2()->request_count() == 0) {
return false;
}
break;
}
return true;
}
bool XdsEnd2endTest::SeenAllBackends(size_t start_index, size_t stop_index,
const RpcService rpc_service) {
if (stop_index == 0) stop_index = backends_.size();
for (size_t i = start_index; i < stop_index; ++i) {
if (!SeenBackend(i, rpc_service)) {
return false;
}
}
return true;
}
std::vector<int> XdsEnd2endTest::GetBackendPorts(size_t start_index,
size_t stop_index) const {
if (stop_index == 0) stop_index = backends_.size();
std::vector<int> backend_ports;
for (size_t i = start_index; i < stop_index; ++i) {
backend_ports.push_back(backends_[i]->port());
}
return backend_ports;
}
void XdsEnd2endTest::InitClient(BootstrapBuilder builder,
std::string lb_expected_authority,
int xds_resource_does_not_exist_timeout_ms) {
if (xds_resource_does_not_exist_timeout_ms > 0) {
xds_channel_args_to_add_.emplace_back(grpc_channel_arg_integer_create(
const_cast<char*>(GRPC_ARG_XDS_RESOURCE_DOES_NOT_EXIST_TIMEOUT_MS),
xds_resource_does_not_exist_timeout_ms));
}
if (!lb_expected_authority.empty()) {
constexpr char authority_const[] = "localhost:%d";
if (lb_expected_authority == authority_const) {
lb_expected_authority =
absl::StrFormat(authority_const, balancer_->port());
}
xds_channel_args_to_add_.emplace_back(grpc_channel_arg_string_create(
const_cast<char*>(GRPC_ARG_FAKE_SECURITY_EXPECTED_TARGETS),
const_cast<char*>(lb_expected_authority.c_str())));
}
xds_channel_args_.num_args = xds_channel_args_to_add_.size();
xds_channel_args_.args = xds_channel_args_to_add_.data();
// Initialize XdsClient state.
builder.SetDefaultServer(absl::StrCat("localhost:", balancer_->port()));
if (GetParam().use_v2()) builder.SetV2();
bootstrap_ = builder.Build();
if (GetParam().bootstrap_source() == XdsTestType::kBootstrapFromEnvVar) {
gpr_setenv("GRPC_XDS_BOOTSTRAP_CONFIG", bootstrap_.c_str());
} else if (GetParam().bootstrap_source() == XdsTestType::kBootstrapFromFile) {
FILE* out = gpr_tmpfile("xds_bootstrap_v3", &bootstrap_file_);
fputs(bootstrap_.c_str(), out);
fclose(out);
gpr_setenv("GRPC_XDS_BOOTSTRAP", bootstrap_file_);
}
if (GetParam().bootstrap_source() != XdsTestType::kBootstrapFromChannelArg) {
// If getting bootstrap from channel arg, we'll pass these args in
// via the parent channel args in CreateChannel() instead.
grpc_core::internal::SetXdsChannelArgsForTest(&xds_channel_args_);
// Make sure each test creates a new XdsClient instance rather than
// reusing the one from the previous test. This avoids spurious failures
// caused when a load reporting test runs after a non-load reporting test
// and the XdsClient is still talking to the old LRS server, which fails
// because it's not expecting the client to connect. It also
// ensures that each test can independently set the global channel
// args for the xDS channel.
grpc_core::internal::UnsetGlobalXdsClientForTest();
}
// Create channel and stub.
ResetStub();
}
void XdsEnd2endTest::ResetStub(int failover_timeout_ms,
ChannelArguments* args) {
channel_ = CreateChannel(failover_timeout_ms, kServerName, "", args);
stub_ = grpc::testing::EchoTestService::NewStub(channel_);
stub1_ = grpc::testing::EchoTest1Service::NewStub(channel_);
stub2_ = grpc::testing::EchoTest2Service::NewStub(channel_);
}
std::shared_ptr<Channel> XdsEnd2endTest::CreateChannel(
int failover_timeout_ms, const char* server_name, const char* xds_authority,
ChannelArguments* args) {
ChannelArguments local_args;
if (args == nullptr) args = &local_args;
// TODO(roth): Remove this once we enable retries by default internally.
args->SetInt(GRPC_ARG_ENABLE_RETRIES, 1);
if (failover_timeout_ms > 0) {
args->SetInt(GRPC_ARG_PRIORITY_FAILOVER_TIMEOUT_MS, failover_timeout_ms);
}
if (GetParam().bootstrap_source() == XdsTestType::kBootstrapFromChannelArg) {
// We're getting the bootstrap from a channel arg, so we do the
// same thing for the response generator to use for the xDS
// channel and the xDS resource-does-not-exist timeout value.
args->SetString(GRPC_ARG_TEST_ONLY_DO_NOT_USE_IN_PROD_XDS_BOOTSTRAP_CONFIG,
bootstrap_.c_str());
args->SetPointerWithVtable(
GRPC_ARG_TEST_ONLY_DO_NOT_USE_IN_PROD_XDS_CLIENT_CHANNEL_ARGS,
&xds_channel_args_, &kChannelArgsArgVtable);
}
std::string uri = absl::StrCat("xds://", xds_authority, "/", server_name);
std::shared_ptr<ChannelCredentials> channel_creds =
GetParam().use_xds_credentials()
? XdsCredentials(CreateTlsFallbackCredentials())
: std::make_shared<SecureChannelCredentials>(
grpc_fake_transport_security_credentials_create());
return grpc::CreateCustomChannel(uri, channel_creds, *args);
}
Status XdsEnd2endTest::SendRpc(const RpcOptions& rpc_options,
EchoResponse* response) {
EchoResponse local_response;
if (response == nullptr) response = &local_response;
ClientContext context;
EchoRequest request;
if (rpc_options.server_expected_error != StatusCode::OK) {
auto* error = request.mutable_param()->mutable_expected_error();
error->set_code(rpc_options.server_expected_error);
}
rpc_options.SetupRpc(&context, &request);
Status status;
switch (rpc_options.service) {
case SERVICE_ECHO:
status =
SendRpcMethod(stub_.get(), rpc_options, &context, request, response);
break;
case SERVICE_ECHO1:
status =
SendRpcMethod(stub1_.get(), rpc_options, &context, request, response);
break;
case SERVICE_ECHO2:
status =
SendRpcMethod(stub2_.get(), rpc_options, &context, request, response);
break;
}
return status;
}
void XdsEnd2endTest::CheckRpcSendOk(
const grpc_core::DebugLocation& debug_location, const size_t times,
const RpcOptions& rpc_options) {
for (size_t i = 0; i < times; ++i) {
EchoResponse response;
const Status status = SendRpc(rpc_options, &response);
EXPECT_TRUE(status.ok())
<< "code=" << status.error_code()
<< " message=" << status.error_message() << " at "
<< debug_location.file() << ":" << debug_location.line();
EXPECT_EQ(response.message(), kRequestMessage);
}
}
void XdsEnd2endTest::CheckRpcSendFailure(
const grpc_core::DebugLocation& debug_location,
const CheckRpcSendFailureOptions& options) {
for (size_t i = 0; options.continue_predicate(i); ++i) {
const Status status = SendRpc(options.rpc_options);
EXPECT_FALSE(status.ok())
<< " at " << debug_location.file() << ":" << debug_location.line();
if (options.expected_error_code != StatusCode::OK) {
EXPECT_EQ(options.expected_error_code, status.error_code())
<< "code=" << status.error_code()
<< " message=" << status.error_message() << " at "
<< debug_location.file() << ":" << debug_location.line();
}
}
}
size_t XdsEnd2endTest::SendRpcsAndCountFailuresWithMessage(
const grpc_core::DebugLocation& debug_location, size_t num_rpcs,
const char* drop_error_message_prefix, const RpcOptions& rpc_options) {
size_t num_failed = 0;
for (size_t i = 0; i < num_rpcs; ++i) {
Status status = SendRpc(rpc_options);
if (!status.ok()) {
EXPECT_THAT(status.error_message(),
::testing::StartsWith(drop_error_message_prefix))
<< "code=" << status.error_code()
<< " message=" << status.error_message() << " at "
<< debug_location.file() << ":" << debug_location.line();
++num_failed;
}
}
return num_failed;
}
void XdsEnd2endTest::LongRunningRpc::StartRpc(
grpc::testing::EchoTestService::Stub* stub, const RpcOptions& rpc_options) {
sender_thread_ = std::thread([this, stub, rpc_options]() {
EchoRequest request;
EchoResponse response;
rpc_options.SetupRpc(&context_, &request);
status_ = stub->Echo(&context_, request, &response);
});
}
void XdsEnd2endTest::LongRunningRpc::CancelRpc() {
context_.TryCancel();
if (sender_thread_.joinable()) sender_thread_.join();
}
Status XdsEnd2endTest::LongRunningRpc::GetStatus() {
if (sender_thread_.joinable()) sender_thread_.join();
return status_;
}
std::vector<XdsEnd2endTest::ConcurrentRpc> XdsEnd2endTest::SendConcurrentRpcs(
const grpc_core::DebugLocation& debug_location,
grpc::testing::EchoTestService::Stub* stub, size_t num_rpcs,
const RpcOptions& rpc_options) {
// Variables for RPCs.
std::vector<ConcurrentRpc> rpcs(num_rpcs);
EchoRequest request;
// Variables for synchronization
grpc_core::Mutex mu;
grpc_core::CondVar cv;
size_t completed = 0;
// Set-off callback RPCs
for (size_t i = 0; i < num_rpcs; i++) {
ConcurrentRpc* rpc = &rpcs[i];
rpc_options.SetupRpc(&rpc->context, &request);
grpc_core::Timestamp t0 = NowFromCycleCounter();
stub->async()->Echo(&rpc->context, &request, &rpc->response,
[rpc, &mu, &completed, &cv, num_rpcs, t0](Status s) {
rpc->status = s;
rpc->elapsed_time = NowFromCycleCounter() - t0;
bool done;
{
grpc_core::MutexLock lock(&mu);
done = (++completed) == num_rpcs;
}
if (done) cv.Signal();
});
}
{
grpc_core::MutexLock lock(&mu);
cv.Wait(&mu);
}
EXPECT_EQ(completed, num_rpcs)
<< " at " << debug_location.file() << ":" << debug_location.line();
return rpcs;
}
size_t XdsEnd2endTest::WaitForAllBackends(
const grpc_core::DebugLocation& debug_location, size_t start_index,
size_t stop_index, const WaitForBackendOptions& wait_options,
const RpcOptions& rpc_options) {
size_t num_rpcs = 0;
auto deadline = absl::Now() + (absl::Milliseconds(wait_options.timeout_ms) *
grpc_test_slowdown_factor());
gpr_log(GPR_INFO,
"========= WAITING FOR BACKENDS [%" PRIuPTR ", %" PRIuPTR
") ==========",
start_index, stop_index);
while (!SeenAllBackends(start_index, stop_index, rpc_options.service)) {
Status status = SendRpc(rpc_options);
if (!wait_options.allow_failures) {
EXPECT_TRUE(status.ok())
<< "code=" << status.error_code()
<< " message=" << status.error_message() << " at "
<< debug_location.file() << ":" << debug_location.line();
}
EXPECT_LE(absl::Now(), deadline)
<< " at " << debug_location.file() << ":" << debug_location.line();
if (absl::Now() >= deadline) break;
++num_rpcs;
}
if (wait_options.reset_counters) ResetBackendCounters();
gpr_log(GPR_INFO, "Backends up; sent %" PRIuPTR " warm up requests",
num_rpcs);
return num_rpcs;
}
absl::optional<AdsServiceImpl::ResponseState> XdsEnd2endTest::WaitForNack(
const grpc_core::DebugLocation& debug_location,
std::function<absl::optional<AdsServiceImpl::ResponseState>()> get_state,
StatusCode expected_status) {
absl::optional<AdsServiceImpl::ResponseState> response_state;
auto deadline = absl::Now() + absl::Seconds(30);
auto continue_predicate = [&]() {
if (absl::Now() >= deadline) {
return false;
}
response_state = get_state();
return !response_state.has_value() ||
response_state->state != AdsServiceImpl::ResponseState::NACKED;
};
do {
const Status status = SendRpc();
EXPECT_EQ(expected_status, status.error_code())
<< "code=" << status.error_code()
<< " message=" << status.error_message() << " at "
<< debug_location.file() << ":" << debug_location.line();
} while (continue_predicate());
return response_state;
}
std::string XdsEnd2endTest::ReadFile(const char* file_path) {
grpc_slice slice;
GPR_ASSERT(
GRPC_LOG_IF_ERROR("load_file", grpc_load_file(file_path, 0, &slice)));
std::string file_contents(grpc_core::StringViewFromSlice(slice));
grpc_slice_unref(slice);
return file_contents;
}
grpc_core::PemKeyCertPairList XdsEnd2endTest::ReadTlsIdentityPair(
const char* key_path, const char* cert_path) {
return grpc_core::PemKeyCertPairList{
grpc_core::PemKeyCertPair(ReadFile(key_path), ReadFile(cert_path))};
}
std::shared_ptr<ChannelCredentials>
XdsEnd2endTest::CreateTlsFallbackCredentials() {
IdentityKeyCertPair key_cert_pair;
key_cert_pair.private_key = ReadFile(kServerKeyPath);
key_cert_pair.certificate_chain = ReadFile(kServerCertPath);
std::vector<IdentityKeyCertPair> identity_key_cert_pairs;
identity_key_cert_pairs.emplace_back(key_cert_pair);
auto certificate_provider = std::make_shared<StaticDataCertificateProvider>(
ReadFile(kCaCertPath), identity_key_cert_pairs);
grpc::experimental::TlsChannelCredentialsOptions options;
options.set_certificate_provider(std::move(certificate_provider));
options.watch_root_certs();
options.watch_identity_key_cert_pairs();
auto verifier =
ExternalCertificateVerifier::Create<SyncCertificateVerifier>(true);
options.set_certificate_verifier(std::move(verifier));
options.set_verify_server_certs(true);
options.set_check_call_host(false);
auto channel_creds = grpc::experimental::TlsCredentials(options);
GPR_ASSERT(channel_creds.get() != nullptr);
return channel_creds;
}
} // namespace testing
} // namespace grpc