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Diffstat (limited to 'test/cpp/end2end/zookeeper_test.cc')
| -rw-r--r-- | test/cpp/end2end/zookeeper_test.cc | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/test/cpp/end2end/zookeeper_test.cc b/test/cpp/end2end/zookeeper_test.cc new file mode 100644 index 0000000000..e7d95b1c46 --- /dev/null +++ b/test/cpp/end2end/zookeeper_test.cc @@ -0,0 +1,221 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc++/channel.h> +#include <grpc++/client_context.h> +#include <grpc++/create_channel.h> +#include <grpc++/credentials.h> +#include <grpc++/server.h> +#include <grpc++/server_builder.h> +#include <grpc++/server_context.h> +#include <grpc++/server_credentials.h> +#include <gtest/gtest.h> +#include <grpc/grpc.h> +#include <grpc/grpc_zookeeper.h> +#include <zookeeper/zookeeper.h> + +#include "test/core/util/test_config.h" +#include "test/core/util/port.h" +#include "test/cpp/util/echo.grpc.pb.h" +#include "src/core/support/env.h" + +using grpc::cpp::test::util::EchoRequest; +using grpc::cpp::test::util::EchoResponse; + +namespace grpc { +namespace testing { + +class ZookeeperTestServiceImpl + : public ::grpc::cpp::test::util::TestService::Service { + public: + Status Echo(ServerContext* context, const EchoRequest* request, + EchoResponse* response) GRPC_OVERRIDE { + response->set_message(request->message()); + return Status::OK; + } +}; + +class ZookeeperTest : public ::testing::Test { + protected: + ZookeeperTest() {} + + void SetUp() GRPC_OVERRIDE { + SetUpZookeeper(); + + // Sets up two servers + int port1 = grpc_pick_unused_port_or_die(); + server1_ = SetUpServer(port1); + + int port2 = grpc_pick_unused_port_or_die(); + server2_ = SetUpServer(port2); + + // Registers service /test in zookeeper + RegisterService("/test", "test"); + + // Registers service instance /test/1 in zookeeper + string value = + "{\"host\":\"localhost\",\"port\":\"" + to_string(port1) + "\"}"; + RegisterService("/test/1", value); + + // Registers service instance /test/2 in zookeeper + value = "{\"host\":\"localhost\",\"port\":\"" + to_string(port2) + "\"}"; + RegisterService("/test/2", value); + } + + // Requires zookeeper server running + void SetUpZookeeper() { + // Finds zookeeper server address in environment + // Default is localhost:2181 + zookeeper_address_ = "localhost:2181"; + char* addr = gpr_getenv("GRPC_ZOOKEEPER_SERVER_TEST"); + if (addr != NULL) { + string addr_str(addr); + zookeeper_address_ = addr_str; + gpr_free(addr); + } + gpr_log(GPR_DEBUG, zookeeper_address_.c_str()); + + // Connects to zookeeper server + zoo_set_debug_level(ZOO_LOG_LEVEL_WARN); + zookeeper_handle_ = + zookeeper_init(zookeeper_address_.c_str(), NULL, 15000, 0, 0, 0); + GPR_ASSERT(zookeeper_handle_ != NULL); + + // Registers zookeeper name resolver in grpc + grpc_zookeeper_register(); + } + + std::unique_ptr<Server> SetUpServer(const int port) { + string server_address = "localhost:" + to_string(port); + + ServerBuilder builder; + builder.AddListeningPort(server_address, InsecureServerCredentials()); + builder.RegisterService(&service_); + std::unique_ptr<Server> server = builder.BuildAndStart(); + return server; + } + + void RegisterService(const string& name, const string& value) { + char* path = (char*)gpr_malloc(name.size()); + + int status = zoo_exists(zookeeper_handle_, name.c_str(), 0, NULL); + if (status == ZNONODE) { + status = + zoo_create(zookeeper_handle_, name.c_str(), value.c_str(), + value.size(), &ZOO_OPEN_ACL_UNSAFE, 0, path, name.size()); + } else { + status = zoo_set(zookeeper_handle_, name.c_str(), value.c_str(), + value.size(), -1); + } + gpr_free(path); + GPR_ASSERT(status == 0); + } + + void DeleteService(const string& name) { + int status = zoo_delete(zookeeper_handle_, name.c_str(), -1); + GPR_ASSERT(status == 0); + } + + void ChangeZookeeperState() { + server1_->Shutdown(); + DeleteService("/test/1"); + } + + void TearDown() GRPC_OVERRIDE { + server1_->Shutdown(); + server2_->Shutdown(); + zookeeper_close(zookeeper_handle_); + } + + void ResetStub() { + string target = "zookeeper://" + zookeeper_address_ + "/test"; + channel_ = CreateChannel(target, InsecureCredentials(), ChannelArguments()); + stub_ = std::move(grpc::cpp::test::util::TestService::NewStub(channel_)); + } + + string to_string(const int number) { + std::stringstream strs; + strs << number; + return strs.str(); + } + + std::shared_ptr<Channel> channel_; + std::unique_ptr<grpc::cpp::test::util::TestService::Stub> stub_; + std::unique_ptr<Server> server1_; + std::unique_ptr<Server> server2_; + ZookeeperTestServiceImpl service_; + zhandle_t* zookeeper_handle_; + string zookeeper_address_; +}; + +// Tests zookeeper state change between two RPCs +// TODO(ctiller): leaked objects in this test +TEST_F(ZookeeperTest, ZookeeperStateChangeTwoRpc) { + ResetStub(); + + // First RPC + EchoRequest request1; + EchoResponse response1; + ClientContext context1; + context1.set_authority("test"); + request1.set_message("Hello"); + Status s1 = stub_->Echo(&context1, request1, &response1); + EXPECT_EQ(response1.message(), request1.message()); + EXPECT_TRUE(s1.ok()); + + // Zookeeper state changes + gpr_log(GPR_DEBUG, "Zookeeper state change"); + ChangeZookeeperState(); + // Waits for re-resolving addresses + // TODO(ctiller): RPC will probably fail if not waiting + sleep(1); + + // Second RPC + EchoRequest request2; + EchoResponse response2; + ClientContext context2; + context2.set_authority("test"); + request2.set_message("World"); + Status s2 = stub_->Echo(&context2, request2, &response2); + EXPECT_EQ(response2.message(), request2.message()); + EXPECT_TRUE(s2.ok()); +} + +} // namespace testing +} // namespace grpc + +int main(int argc, char** argv) { + grpc_test_init(argc, argv); + ::testing::InitGoogleTest(&argc, argv); + return RUN_ALL_TESTS(); +} |