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/*
*
* Copyright 2016 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 <grpc/support/port_platform.h>
#include <stdlib.h>
#include <unistd.h>
#include <cstdlib>
#include <iostream>
#include <memory>
#include <string>
#include <thread>
#include "absl/strings/str_cat.h"
#include "gtest/gtest.h"
#include <grpc/grpc.h>
#include <grpc/support/alloc.h>
#include <grpcpp/channel.h>
#include <grpcpp/client_context.h>
#include <grpcpp/create_channel.h>
#include <grpcpp/ext/channelz_service_plugin.h>
#include <grpcpp/grpcpp.h>
#include <grpcpp/security/credentials.h>
#include <grpcpp/security/server_credentials.h>
#include <grpcpp/server.h>
#include <grpcpp/server_builder.h>
#include <grpcpp/server_context.h>
#include "src/core/lib/gprpp/env.h"
#include "src/cpp/server/channelz/channelz_service.h"
#include "src/proto/grpc/testing/test.grpc.pb.h"
#include "test/core/util/port.h"
#include "test/core/util/test_config.h"
#include "test/cpp/util/subprocess.h"
#include "test/cpp/util/test_credentials_provider.h"
static std::string g_root;
namespace {
using grpc::ClientContext;
using grpc::Server;
using grpc::ServerBuilder;
using grpc::ServerContext;
using grpc::Status;
} // namespace
// Test variables
std::string server_address("0.0.0.0:10000");
std::string custom_credentials_type("INSECURE_CREDENTIALS");
std::string sampling_times = "2";
std::string sampling_interval_seconds = "3";
std::string output_json("output.json");
// Creata an echo server
class EchoServerImpl final : public grpc::testing::TestService::Service {
Status EmptyCall(ServerContext* /*context*/,
const grpc::testing::Empty* /*request*/,
grpc::testing::Empty* /*response*/) override {
return Status::OK;
}
};
// Run client in a thread
void RunClient(const std::string& client_id, gpr_event* done_ev) {
grpc::ChannelArguments channel_args;
std::shared_ptr<grpc::ChannelCredentials> channel_creds =
grpc::testing::GetCredentialsProvider()->GetChannelCredentials(
custom_credentials_type, &channel_args);
std::unique_ptr<grpc::testing::TestService::Stub> stub =
grpc::testing::TestService::NewStub(
grpc::CreateChannel(server_address, channel_creds));
gpr_log(GPR_INFO, "Client %s is echoing!", client_id.c_str());
while (true) {
if (gpr_event_wait(done_ev, grpc_timeout_seconds_to_deadline(1)) !=
nullptr) {
return;
}
grpc::testing::Empty request;
grpc::testing::Empty response;
ClientContext context;
Status status = stub->EmptyCall(&context, request, &response);
if (!status.ok()) {
gpr_log(GPR_ERROR, "Client echo failed.");
GPR_ASSERT(0);
}
}
}
// Create the channelz to test the connection to the server
bool WaitForConnection(int wait_server_seconds) {
grpc::ChannelArguments channel_args;
std::shared_ptr<grpc::ChannelCredentials> channel_creds =
grpc::testing::GetCredentialsProvider()->GetChannelCredentials(
custom_credentials_type, &channel_args);
auto channel = grpc::CreateChannel(server_address, channel_creds);
return channel->WaitForConnected(
grpc_timeout_seconds_to_deadline(wait_server_seconds));
}
// Test the channelz sampler
TEST(ChannelzSamplerTest, SimpleTest) {
// start server
grpc::channelz::experimental::InitChannelzService();
EchoServerImpl service;
ServerBuilder builder;
auto server_creds =
grpc::testing::GetCredentialsProvider()->GetServerCredentials(
custom_credentials_type);
builder.AddListeningPort(server_address, server_creds);
builder.RegisterService(&service);
std::unique_ptr<Server> server(builder.BuildAndStart());
gpr_log(GPR_INFO, "Server listening on %s", server_address.c_str());
const int kWaitForServerSeconds = 10;
ASSERT_TRUE(WaitForConnection(kWaitForServerSeconds));
// client threads
gpr_event done_ev1, done_ev2;
gpr_event_init(&done_ev1);
gpr_event_init(&done_ev2);
std::thread client_thread_1(RunClient, "1", &done_ev1);
std::thread client_thread_2(RunClient, "2", &done_ev2);
// Run the channelz sampler
grpc::SubProcess* test_driver = new grpc::SubProcess(
{g_root + "/channelz_sampler", "--server_address=" + server_address,
"--custom_credentials_type=" + custom_credentials_type,
"--sampling_times=" + sampling_times,
"--sampling_interval_seconds=" + sampling_interval_seconds,
"--output_json=" + output_json});
int status = test_driver->Join();
if (WIFEXITED(status)) {
if (WEXITSTATUS(status)) {
gpr_log(GPR_ERROR,
"Channelz sampler test test-runner exited with code %d",
WEXITSTATUS(status));
GPR_ASSERT(0); // log the line number of the assertion failure
}
} else if (WIFSIGNALED(status)) {
gpr_log(GPR_ERROR, "Channelz sampler test test-runner ended from signal %d",
WTERMSIG(status));
GPR_ASSERT(0);
} else {
gpr_log(GPR_ERROR,
"Channelz sampler test test-runner ended with unknown status %d",
status);
GPR_ASSERT(0);
}
delete test_driver;
gpr_event_set(&done_ev1, reinterpret_cast<void*>(1));
gpr_event_set(&done_ev2, reinterpret_cast<void*>(1));
client_thread_1.join();
client_thread_2.join();
}
int main(int argc, char** argv) {
grpc::testing::TestEnvironment env(&argc, argv);
::testing::InitGoogleTest(&argc, argv);
std::string me = argv[0];
auto lslash = me.rfind('/');
if (lslash != std::string::npos) {
g_root = me.substr(0, lslash);
} else {
g_root = ".";
}
/// ensures the target address is unique even if this test is run in parallel
server_address = absl::StrCat("0.0.0.0:", grpc_pick_unused_port_or_die());
int ret = RUN_ALL_TESTS();
return ret;
}
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