f8a4fae080
Reviewers: teon.banek, buda Reviewed By: teon.banek Subscribers: pullbot Differential Revision: https://phabricator.memgraph.io/D1333
74 lines
2.4 KiB
C++
74 lines
2.4 KiB
C++
#include <fstream>
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#include <thread>
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#include <fmt/format.h>
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#include <gflags/gflags.h>
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#include <glog/logging.h>
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#include "communication/rpc/server.hpp"
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#include "messages.hpp"
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#include "utils/signals.hpp"
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#include "utils/terminate_handler.hpp"
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using namespace communication::rpc;
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using namespace std::literals::chrono_literals;
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DEFINE_string(interface, "127.0.0.1",
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"Communication interface on which to listen.");
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DEFINE_string(port, "10000", "Communication port on which to listen.");
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DEFINE_string(log, "log.txt", "Entries log file");
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volatile sig_atomic_t is_shutting_down = 0;
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int main(int argc, char **argv) {
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google::SetUsageMessage("Raft RPC Server");
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gflags::ParseCommandLineFlags(&argc, &argv, true);
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google::InitGoogleLogging(argv[0]);
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// Unhandled exception handler init.
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std::set_terminate(&terminate_handler);
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Server server(io::network::Endpoint(FLAGS_interface, stoul(FLAGS_port)));
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std::ofstream log(FLAGS_log, std::ios_base::app);
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// Handler for regular termination signals.
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auto shutdown = [&log]() {
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if (is_shutting_down) return;
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is_shutting_down = 1;
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log.close();
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exit(0);
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};
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// Prevent handling shutdown inside a shutdown. For example, SIGINT handler
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// being interrupted by SIGTERM before is_shutting_down is set, thus causing
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// double shutdown.
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sigset_t block_shutdown_signals;
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sigemptyset(&block_shutdown_signals);
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sigaddset(&block_shutdown_signals, SIGTERM);
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sigaddset(&block_shutdown_signals, SIGINT);
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CHECK(utils::SignalHandler::RegisterHandler(utils::Signal::Terminate,
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shutdown, block_shutdown_signals))
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<< "Unable to register SIGTERM handler!";
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CHECK(utils::SignalHandler::RegisterHandler(utils::Signal::Interupt, shutdown,
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block_shutdown_signals))
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<< "Unable to register SIGINT handler!";
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// Example callback.
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server.Register<AppendEntry>([&log](const AppendEntryReq &request) {
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log << request.val << std::endl;
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log.flush();
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LOG(INFO) << fmt::format("AppendEntry: {}", request.val);
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return std::make_unique<AppendEntryRes>(200, FLAGS_interface,
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stol(FLAGS_port));
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});
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LOG(INFO) << "Raft RPC server started";
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// Sleep until shutdown detected.
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std::this_thread::sleep_until(
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std::chrono::time_point<std::chrono::system_clock>::max());
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return 0;
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}
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