mirror of https://github.com/grpc/grpc.git
Merge pull request #18946 from yashykt/svccfgerrortransient
Service Config Changes to set channel in transient failure on invalid service configpull/18839/head
Yash Tibrewal
6 years ago
committed by
GitHub
commit
aa89a97531
20 changed files with 1233 additions and 229 deletions
@ -0,0 +1,561 @@ |
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/*
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* |
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* Copyright 2016 gRPC authors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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*/ |
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#include <algorithm> |
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#include <memory> |
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#include <mutex> |
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#include <random> |
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#include <set> |
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#include <thread> |
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#include <grpc/grpc.h> |
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#include <grpc/support/alloc.h> |
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#include <grpc/support/atm.h> |
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#include <grpc/support/log.h> |
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#include <grpc/support/string_util.h> |
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#include <grpc/support/time.h> |
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#include <grpcpp/channel.h> |
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#include <grpcpp/client_context.h> |
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#include <grpcpp/create_channel.h> |
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#include <grpcpp/health_check_service_interface.h> |
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#include <grpcpp/impl/codegen/sync.h> |
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#include <grpcpp/server.h> |
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#include <grpcpp/server_builder.h> |
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#include "src/core/ext/filters/client_channel/backup_poller.h" |
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#include "src/core/ext/filters/client_channel/global_subchannel_pool.h" |
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#include "src/core/ext/filters/client_channel/parse_address.h" |
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#include "src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h" |
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#include "src/core/ext/filters/client_channel/server_address.h" |
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#include "src/core/lib/backoff/backoff.h" |
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#include "src/core/lib/channel/channel_args.h" |
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#include "src/core/lib/gprpp/debug_location.h" |
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#include "src/core/lib/gprpp/ref_counted_ptr.h" |
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#include "src/core/lib/iomgr/tcp_client.h" |
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#include "src/core/lib/security/credentials/fake/fake_credentials.h" |
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#include "src/cpp/client/secure_credentials.h" |
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#include "src/cpp/server/secure_server_credentials.h" |
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#include "src/proto/grpc/testing/echo.grpc.pb.h" |
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#include "test/core/util/port.h" |
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#include "test/core/util/test_config.h" |
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#include "test/cpp/end2end/test_service_impl.h" |
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#include <gmock/gmock.h> |
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#include <gtest/gtest.h> |
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using grpc::testing::EchoRequest; |
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using grpc::testing::EchoResponse; |
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using std::chrono::system_clock; |
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namespace grpc { |
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namespace testing { |
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namespace { |
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// Subclass of TestServiceImpl that increments a request counter for
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// every call to the Echo RPC.
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class MyTestServiceImpl : public TestServiceImpl { |
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public: |
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MyTestServiceImpl() : request_count_(0) {} |
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Status Echo(ServerContext* context, const EchoRequest* request, |
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EchoResponse* response) override { |
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{ |
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grpc::internal::MutexLock lock(&mu_); |
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++request_count_; |
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} |
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AddClient(context->peer()); |
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return TestServiceImpl::Echo(context, request, response); |
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} |
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int request_count() { |
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grpc::internal::MutexLock lock(&mu_); |
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return request_count_; |
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} |
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void ResetCounters() { |
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grpc::internal::MutexLock lock(&mu_); |
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request_count_ = 0; |
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} |
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std::set<grpc::string> clients() { |
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grpc::internal::MutexLock lock(&clients_mu_); |
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return clients_; |
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} |
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private: |
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void AddClient(const grpc::string& client) { |
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grpc::internal::MutexLock lock(&clients_mu_); |
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clients_.insert(client); |
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} |
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grpc::internal::Mutex mu_; |
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int request_count_; |
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grpc::internal::Mutex clients_mu_; |
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std::set<grpc::string> clients_; |
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}; |
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class ServiceConfigEnd2endTest : public ::testing::Test { |
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protected: |
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ServiceConfigEnd2endTest() |
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: server_host_("localhost"), |
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kRequestMessage_("Live long and prosper."), |
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creds_(new SecureChannelCredentials( |
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grpc_fake_transport_security_credentials_create())) { |
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// Make the backup poller poll very frequently in order to pick up
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// updates from all the subchannels's FDs.
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GPR_GLOBAL_CONFIG_SET(grpc_client_channel_backup_poll_interval_ms, 1); |
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} |
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void SetUp() override { |
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grpc_init(); |
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response_generator_ = |
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grpc_core::MakeRefCounted<grpc_core::FakeResolverResponseGenerator>(); |
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} |
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void TearDown() override { |
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for (size_t i = 0; i < servers_.size(); ++i) { |
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servers_[i]->Shutdown(); |
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} |
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// Explicitly destroy all the members so that we can make sure grpc_shutdown
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// has finished by the end of this function, and thus all the registered
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// LB policy factories are removed.
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stub_.reset(); |
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servers_.clear(); |
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creds_.reset(); |
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grpc_shutdown_blocking(); |
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} |
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void CreateServers(size_t num_servers, |
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std::vector<int> ports = std::vector<int>()) { |
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servers_.clear(); |
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for (size_t i = 0; i < num_servers; ++i) { |
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int port = 0; |
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if (ports.size() == num_servers) port = ports[i]; |
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servers_.emplace_back(new ServerData(port)); |
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} |
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} |
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void StartServer(size_t index) { servers_[index]->Start(server_host_); } |
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void StartServers(size_t num_servers, |
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std::vector<int> ports = std::vector<int>()) { |
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CreateServers(num_servers, std::move(ports)); |
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for (size_t i = 0; i < num_servers; ++i) { |
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StartServer(i); |
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} |
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} |
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grpc_core::Resolver::Result BuildFakeResults(const std::vector<int>& ports) { |
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grpc_core::Resolver::Result result; |
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for (const int& port : ports) { |
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char* lb_uri_str; |
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gpr_asprintf(&lb_uri_str, "ipv4:127.0.0.1:%d", port); |
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grpc_uri* lb_uri = grpc_uri_parse(lb_uri_str, true); |
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GPR_ASSERT(lb_uri != nullptr); |
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grpc_resolved_address address; |
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GPR_ASSERT(grpc_parse_uri(lb_uri, &address)); |
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result.addresses.emplace_back(address.addr, address.len, |
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nullptr /* args */); |
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grpc_uri_destroy(lb_uri); |
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gpr_free(lb_uri_str); |
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} |
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return result; |
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} |
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void SetNextResolutionNoServiceConfig(const std::vector<int>& ports) { |
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grpc_core::ExecCtx exec_ctx; |
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grpc_core::Resolver::Result result = BuildFakeResults(ports); |
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response_generator_->SetResponse(result); |
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} |
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void SetNextResolutionValidServiceConfig(const std::vector<int>& ports) { |
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grpc_core::ExecCtx exec_ctx; |
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grpc_core::Resolver::Result result = BuildFakeResults(ports); |
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result.service_config = |
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grpc_core::ServiceConfig::Create("{}", &result.service_config_error); |
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response_generator_->SetResponse(result); |
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} |
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void SetNextResolutionInvalidServiceConfig(const std::vector<int>& ports) { |
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grpc_core::ExecCtx exec_ctx; |
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grpc_core::Resolver::Result result = BuildFakeResults(ports); |
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result.service_config = |
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grpc_core::ServiceConfig::Create("{", &result.service_config_error); |
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response_generator_->SetResponse(result); |
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} |
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void SetNextResolutionWithServiceConfig(const std::vector<int>& ports, |
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const char* svc_cfg) { |
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grpc_core::ExecCtx exec_ctx; |
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grpc_core::Resolver::Result result = BuildFakeResults(ports); |
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result.service_config = |
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grpc_core::ServiceConfig::Create(svc_cfg, &result.service_config_error); |
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response_generator_->SetResponse(result); |
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} |
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std::vector<int> GetServersPorts(size_t start_index = 0) { |
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std::vector<int> ports; |
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for (size_t i = start_index; i < servers_.size(); ++i) { |
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ports.push_back(servers_[i]->port_); |
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} |
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return ports; |
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} |
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std::unique_ptr<grpc::testing::EchoTestService::Stub> BuildStub( |
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const std::shared_ptr<Channel>& channel) { |
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return grpc::testing::EchoTestService::NewStub(channel); |
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} |
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std::shared_ptr<Channel> BuildChannel() { |
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ChannelArguments args; |
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args.SetPointer(GRPC_ARG_FAKE_RESOLVER_RESPONSE_GENERATOR, |
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response_generator_.get()); |
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return ::grpc::CreateCustomChannel("fake:///", creds_, args); |
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} |
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std::shared_ptr<Channel> BuildChannelWithDefaultServiceConfig() { |
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ChannelArguments args; |
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args.SetServiceConfigJSON(ValidDefaultServiceConfig()); |
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args.SetPointer(GRPC_ARG_FAKE_RESOLVER_RESPONSE_GENERATOR, |
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response_generator_.get()); |
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return ::grpc::CreateCustomChannel("fake:///", creds_, args); |
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} |
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bool SendRpc( |
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const std::unique_ptr<grpc::testing::EchoTestService::Stub>& stub, |
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EchoResponse* response = nullptr, int timeout_ms = 1000, |
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Status* result = nullptr, bool wait_for_ready = false) { |
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const bool local_response = (response == nullptr); |
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if (local_response) response = new EchoResponse; |
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EchoRequest request; |
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request.set_message(kRequestMessage_); |
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ClientContext context; |
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context.set_deadline(grpc_timeout_milliseconds_to_deadline(timeout_ms)); |
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if (wait_for_ready) context.set_wait_for_ready(true); |
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Status status = stub->Echo(&context, request, response); |
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if (result != nullptr) *result = status; |
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if (local_response) delete response; |
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return status.ok(); |
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} |
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void CheckRpcSendOk( |
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const std::unique_ptr<grpc::testing::EchoTestService::Stub>& stub, |
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const grpc_core::DebugLocation& location, bool wait_for_ready = false) { |
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EchoResponse response; |
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Status status; |
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const bool success = |
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SendRpc(stub, &response, 2000, &status, wait_for_ready); |
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ASSERT_TRUE(success) << "From " << location.file() << ":" << location.line() |
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<< "\n" |
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<< "Error: " << status.error_message() << " " |
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<< status.error_details(); |
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ASSERT_EQ(response.message(), kRequestMessage_) |
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<< "From " << location.file() << ":" << location.line(); |
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if (!success) abort(); |
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} |
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void CheckRpcSendFailure( |
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const std::unique_ptr<grpc::testing::EchoTestService::Stub>& stub) { |
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const bool success = SendRpc(stub); |
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EXPECT_FALSE(success); |
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} |
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struct ServerData { |
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int port_; |
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std::unique_ptr<Server> server_; |
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MyTestServiceImpl service_; |
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std::unique_ptr<std::thread> thread_; |
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bool server_ready_ = false; |
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bool started_ = false; |
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explicit ServerData(int port = 0) { |
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port_ = port > 0 ? port : grpc_pick_unused_port_or_die(); |
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} |
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void Start(const grpc::string& server_host) { |
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gpr_log(GPR_INFO, "starting server on port %d", port_); |
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started_ = true; |
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grpc::internal::Mutex mu; |
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grpc::internal::MutexLock lock(&mu); |
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grpc::internal::CondVar cond; |
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thread_.reset(new std::thread( |
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std::bind(&ServerData::Serve, this, server_host, &mu, &cond))); |
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cond.WaitUntil(&mu, [this] { return server_ready_; }); |
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server_ready_ = false; |
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gpr_log(GPR_INFO, "server startup complete"); |
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} |
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void Serve(const grpc::string& server_host, grpc::internal::Mutex* mu, |
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grpc::internal::CondVar* cond) { |
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std::ostringstream server_address; |
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server_address << server_host << ":" << port_; |
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ServerBuilder builder; |
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std::shared_ptr<ServerCredentials> creds(new SecureServerCredentials( |
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grpc_fake_transport_security_server_credentials_create())); |
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builder.AddListeningPort(server_address.str(), std::move(creds)); |
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builder.RegisterService(&service_); |
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server_ = builder.BuildAndStart(); |
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grpc::internal::MutexLock lock(mu); |
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server_ready_ = true; |
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cond->Signal(); |
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} |
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void Shutdown() { |
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if (!started_) return; |
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server_->Shutdown(grpc_timeout_milliseconds_to_deadline(0)); |
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thread_->join(); |
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started_ = false; |
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} |
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void SetServingStatus(const grpc::string& service, bool serving) { |
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server_->GetHealthCheckService()->SetServingStatus(service, serving); |
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} |
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}; |
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void ResetCounters() { |
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for (const auto& server : servers_) server->service_.ResetCounters(); |
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} |
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void WaitForServer( |
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const std::unique_ptr<grpc::testing::EchoTestService::Stub>& stub, |
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size_t server_idx, const grpc_core::DebugLocation& location, |
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bool ignore_failure = false) { |
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do { |
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if (ignore_failure) { |
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SendRpc(stub); |
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} else { |
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CheckRpcSendOk(stub, location, true); |
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} |
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} while (servers_[server_idx]->service_.request_count() == 0); |
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ResetCounters(); |
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} |
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bool WaitForChannelNotReady(Channel* channel, int timeout_seconds = 5) { |
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const gpr_timespec deadline = |
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grpc_timeout_seconds_to_deadline(timeout_seconds); |
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grpc_connectivity_state state; |
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while ((state = channel->GetState(false /* try_to_connect */)) == |
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GRPC_CHANNEL_READY) { |
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if (!channel->WaitForStateChange(state, deadline)) return false; |
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} |
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return true; |
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} |
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bool WaitForChannelReady(Channel* channel, int timeout_seconds = 5) { |
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const gpr_timespec deadline = |
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grpc_timeout_seconds_to_deadline(timeout_seconds); |
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grpc_connectivity_state state; |
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while ((state = channel->GetState(true /* try_to_connect */)) != |
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GRPC_CHANNEL_READY) { |
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if (!channel->WaitForStateChange(state, deadline)) return false; |
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} |
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return true; |
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} |
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bool SeenAllServers() { |
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for (const auto& server : servers_) { |
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if (server->service_.request_count() == 0) return false; |
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} |
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return true; |
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} |
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// Updates \a connection_order by appending to it the index of the newly
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// connected server. Must be called after every single RPC.
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void UpdateConnectionOrder( |
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const std::vector<std::unique_ptr<ServerData>>& servers, |
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std::vector<int>* connection_order) { |
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for (size_t i = 0; i < servers.size(); ++i) { |
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if (servers[i]->service_.request_count() == 1) { |
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// Was the server index known? If not, update connection_order.
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const auto it = |
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std::find(connection_order->begin(), connection_order->end(), i); |
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if (it == connection_order->end()) { |
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connection_order->push_back(i); |
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return; |
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} |
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} |
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} |
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} |
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const char* ValidServiceConfigV1() { return "{\"version\": \"1\"}"; } |
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const char* ValidServiceConfigV2() { return "{\"version\": \"2\"}"; } |
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const char* ValidDefaultServiceConfig() { |
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return "{\"version\": \"valid_default\"}"; |
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} |
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const char* InvalidDefaultServiceConfig() { |
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return "{\"version\": \"invalid_default\"}"; |
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} |
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const grpc::string server_host_; |
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std::unique_ptr<grpc::testing::EchoTestService::Stub> stub_; |
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std::vector<std::unique_ptr<ServerData>> servers_; |
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grpc_core::RefCountedPtr<grpc_core::FakeResolverResponseGenerator> |
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response_generator_; |
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const grpc::string kRequestMessage_; |
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std::shared_ptr<ChannelCredentials> creds_; |
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}; |
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TEST_F(ServiceConfigEnd2endTest, NoServiceConfigTest) { |
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StartServers(1); |
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auto channel = BuildChannel(); |
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auto stub = BuildStub(channel); |
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SetNextResolutionNoServiceConfig(GetServersPorts()); |
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CheckRpcSendOk(stub, DEBUG_LOCATION); |
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EXPECT_STREQ("", channel->GetServiceConfigJSON().c_str()); |
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} |
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TEST_F(ServiceConfigEnd2endTest, NoServiceConfigWithDefaultConfigTest) { |
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StartServers(1); |
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auto channel = BuildChannelWithDefaultServiceConfig(); |
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auto stub = BuildStub(channel); |
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SetNextResolutionNoServiceConfig(GetServersPorts()); |
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CheckRpcSendOk(stub, DEBUG_LOCATION); |
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EXPECT_STREQ(ValidDefaultServiceConfig(), |
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channel->GetServiceConfigJSON().c_str()); |
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} |
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TEST_F(ServiceConfigEnd2endTest, InvalidServiceConfigTest) { |
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StartServers(1); |
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auto channel = BuildChannel(); |
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auto stub = BuildStub(channel); |
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SetNextResolutionInvalidServiceConfig(GetServersPorts()); |
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CheckRpcSendFailure(stub); |
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} |
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TEST_F(ServiceConfigEnd2endTest, InvalidServiceConfigWithDefaultConfigTest) { |
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StartServers(1); |
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auto channel = BuildChannelWithDefaultServiceConfig(); |
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auto stub = BuildStub(channel); |
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SetNextResolutionInvalidServiceConfig(GetServersPorts()); |
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CheckRpcSendOk(stub, DEBUG_LOCATION); |
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EXPECT_STREQ(ValidDefaultServiceConfig(), |
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channel->GetServiceConfigJSON().c_str()); |
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} |
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TEST_F(ServiceConfigEnd2endTest, ValidServiceConfigUpdatesTest) { |
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StartServers(1); |
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auto channel = BuildChannel(); |
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auto stub = BuildStub(channel); |
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SetNextResolutionWithServiceConfig(GetServersPorts(), ValidServiceConfigV1()); |
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CheckRpcSendOk(stub, DEBUG_LOCATION); |
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EXPECT_STREQ(ValidServiceConfigV1(), channel->GetServiceConfigJSON().c_str()); |
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SetNextResolutionWithServiceConfig(GetServersPorts(), ValidServiceConfigV2()); |
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CheckRpcSendOk(stub, DEBUG_LOCATION); |
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EXPECT_STREQ(ValidServiceConfigV2(), channel->GetServiceConfigJSON().c_str()); |
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} |
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TEST_F(ServiceConfigEnd2endTest, |
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NoServiceConfigUpdateAfterValidServiceConfigTest) { |
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StartServers(1); |
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auto channel = BuildChannel(); |
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auto stub = BuildStub(channel); |
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SetNextResolutionWithServiceConfig(GetServersPorts(), ValidServiceConfigV1()); |
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CheckRpcSendOk(stub, DEBUG_LOCATION); |
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EXPECT_STREQ(ValidServiceConfigV1(), channel->GetServiceConfigJSON().c_str()); |
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SetNextResolutionNoServiceConfig(GetServersPorts()); |
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CheckRpcSendOk(stub, DEBUG_LOCATION); |
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EXPECT_STREQ("", channel->GetServiceConfigJSON().c_str()); |
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} |
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|
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TEST_F(ServiceConfigEnd2endTest, |
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NoServiceConfigUpdateAfterValidServiceConfigWithDefaultConfigTest) { |
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StartServers(1); |
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auto channel = BuildChannelWithDefaultServiceConfig(); |
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auto stub = BuildStub(channel); |
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SetNextResolutionWithServiceConfig(GetServersPorts(), ValidServiceConfigV1()); |
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CheckRpcSendOk(stub, DEBUG_LOCATION); |
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EXPECT_STREQ(ValidServiceConfigV1(), channel->GetServiceConfigJSON().c_str()); |
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SetNextResolutionNoServiceConfig(GetServersPorts()); |
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CheckRpcSendOk(stub, DEBUG_LOCATION); |
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EXPECT_STREQ(ValidDefaultServiceConfig(), |
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channel->GetServiceConfigJSON().c_str()); |
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} |
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|
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TEST_F(ServiceConfigEnd2endTest, |
||||
InvalidServiceConfigUpdateAfterValidServiceConfigTest) { |
||||
StartServers(1); |
||||
auto channel = BuildChannel(); |
||||
auto stub = BuildStub(channel); |
||||
SetNextResolutionWithServiceConfig(GetServersPorts(), ValidServiceConfigV1()); |
||||
CheckRpcSendOk(stub, DEBUG_LOCATION); |
||||
EXPECT_STREQ(ValidServiceConfigV1(), channel->GetServiceConfigJSON().c_str()); |
||||
SetNextResolutionInvalidServiceConfig(GetServersPorts()); |
||||
CheckRpcSendOk(stub, DEBUG_LOCATION); |
||||
EXPECT_STREQ(ValidServiceConfigV1(), channel->GetServiceConfigJSON().c_str()); |
||||
} |
||||
|
||||
TEST_F(ServiceConfigEnd2endTest, |
||||
InvalidServiceConfigUpdateAfterValidServiceConfigWithDefaultConfigTest) { |
||||
StartServers(1); |
||||
auto channel = BuildChannelWithDefaultServiceConfig(); |
||||
auto stub = BuildStub(channel); |
||||
SetNextResolutionWithServiceConfig(GetServersPorts(), ValidServiceConfigV1()); |
||||
CheckRpcSendOk(stub, DEBUG_LOCATION); |
||||
EXPECT_STREQ(ValidServiceConfigV1(), channel->GetServiceConfigJSON().c_str()); |
||||
SetNextResolutionInvalidServiceConfig(GetServersPorts()); |
||||
CheckRpcSendOk(stub, DEBUG_LOCATION); |
||||
EXPECT_STREQ(ValidServiceConfigV1(), channel->GetServiceConfigJSON().c_str()); |
||||
} |
||||
|
||||
TEST_F(ServiceConfigEnd2endTest, |
||||
ValidServiceConfigAfterInvalidServiceConfigTest) { |
||||
StartServers(1); |
||||
auto channel = BuildChannel(); |
||||
auto stub = BuildStub(channel); |
||||
SetNextResolutionInvalidServiceConfig(GetServersPorts()); |
||||
CheckRpcSendFailure(stub); |
||||
SetNextResolutionValidServiceConfig(GetServersPorts()); |
||||
CheckRpcSendOk(stub, DEBUG_LOCATION); |
||||
} |
||||
|
||||
TEST_F(ServiceConfigEnd2endTest, NoServiceConfigAfterInvalidServiceConfigTest) { |
||||
StartServers(1); |
||||
auto channel = BuildChannel(); |
||||
auto stub = BuildStub(channel); |
||||
SetNextResolutionInvalidServiceConfig(GetServersPorts()); |
||||
CheckRpcSendFailure(stub); |
||||
SetNextResolutionNoServiceConfig(GetServersPorts()); |
||||
CheckRpcSendOk(stub, DEBUG_LOCATION); |
||||
EXPECT_STREQ("", channel->GetServiceConfigJSON().c_str()); |
||||
} |
||||
|
||||
TEST_F(ServiceConfigEnd2endTest, |
||||
AnotherInvalidServiceConfigAfterInvalidServiceConfigTest) { |
||||
StartServers(1); |
||||
auto channel = BuildChannel(); |
||||
auto stub = BuildStub(channel); |
||||
SetNextResolutionInvalidServiceConfig(GetServersPorts()); |
||||
CheckRpcSendFailure(stub); |
||||
SetNextResolutionInvalidServiceConfig(GetServersPorts()); |
||||
CheckRpcSendFailure(stub); |
||||
} |
||||
|
||||
} // namespace
|
||||
} // namespace testing
|
||||
} // namespace grpc
|
||||
|
||||
int main(int argc, char** argv) { |
||||
::testing::InitGoogleTest(&argc, argv); |
||||
grpc::testing::TestEnvironment env(argc, argv); |
||||
const auto result = RUN_ALL_TESTS(); |
||||
return result; |
||||
} |
||||
Loading…
Reference in new issue