From 973aec43ea54bbf95b64fbcb636403401d1ca60e Mon Sep 17 00:00:00 2001
From: Rutger Broekhoff
Date: Fri, 28 Aug 2026 18:03:05 +0200
Subject: Import from e4b104792206ee7ea64bf39c6b7d2c0c230f9d14

---
 server/src/main.cpp | 109 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 server/src/main.cpp

(limited to 'server/src/main.cpp')

diff --git a/server/src/main.cpp b/server/src/main.cpp
new file mode 100644
index 0000000..a40b0b0
--- /dev/null
+++ b/server/src/main.cpp
@@ -0,0 +1,109 @@
+#include <malloc.h>  // for malloc_trim(3)
+#include <boost/asio.hpp>
+
+import std;
+import routemon;
+
+namespace chrono = std::chrono;
+namespace net = boost::asio;
+
+enum class exit_status {
+  failure,
+  bad_usage,
+};
+
+auto real_main(std::span<char const*> args) -> exit_status {
+  auto sink = routemon::log::make_sink(routemon::log::level::info);
+  auto l = routemon::log::logger{sink};
+
+  if (args.size() != 2) {
+    l.error("Fatal: expected exactly one argument (the configuration file location), got {}", args.size() - 1);
+    return exit_status::bad_usage;
+  }
+  auto const* config_filename = args[1];
+
+  auto lgen = routemon::locale::make_generator();
+  auto default_locale = lgen->generate("en_US.UTF-8");
+  auto locales = {
+    default_locale,
+    lgen->generate("nl_NL.UTF-8"),
+    lgen->generate("de_DE.UTF-8"),
+    lgen->generate("en_GB.UTF-8"),
+  };
+  auto lsel = routemon::locale::selector{locales, default_locale, lgen};
+
+  auto ioc = net::io_context{1 /* concurrency hint */};
+
+  auto config = routemon::config::app{};
+  try {
+    config = routemon::config::load_file(config_filename);
+  } catch (std::exception const& e) {
+    l.with("filename", std::string_view{config_filename}).
+      error("Failed to load configuration: {}", e.what());
+    return exit_status::failure;
+  }
+  sink->set_level(config.logger.level);
+  // auto rwgps_client = routemon::rwgps::client{ioc, l, config.rwgps.api_key, config.rwgps.auth_token};
+  // for (auto route : rwgps_client.get_all_routes()) {
+  //   l.info("Route {} (user {}): {} @ {}", route.id, route.user_id, route.name, route.url);
+  // }
+
+  auto dbc = std::shared_ptr<routemon::database::connection>{};
+  try {
+    dbc = routemon::database::open(config.database.sqlite3_filename);
+  } catch (std::exception const& e) {
+    l.with("filename", config.database.sqlite3_filename).
+      error("Failed to open database: {}", e.what());
+    return exit_status::failure;
+  }
+
+  l.with("filename", config.situations.datex2_filename).
+    info("Loading situations");
+  auto const before_load = chrono::steady_clock::now();
+  auto d2loader = routemon::datex2::loader{};
+  auto pub = routemon::datex2::situation_publication{};
+  try {
+    pub = d2loader.load_situation_publication(config.situations.datex2_filename);
+  } catch (std::exception const& e) {
+    l.error("Failed to load DATEX II situations publication: {}", e.what());
+    return exit_status::failure;
+  }
+  if (!d2loader.warnings().empty()) {
+    auto const& warns = d2loader.warnings();
+    l.warn("Encountered {} unique warnings while loading DATEX II situations publication", warns.size());
+    auto i = 0uz;
+    for (auto it = warns.begin(); it != warns.end(); it = warns.upper_bound(*it)) {
+      l.warn("Warning {} (appeared {}×): {}", ++i, warns.count(*it), *it);
+    }
+  }
+  // Processing the feed is by far the most memory-intensive operation
+  // during the run time of this application (at the moment), the
+  // resident set will likely never be this big again. So we ask libc
+  // to return as much memory as possible to the OS.
+  malloc_trim(0);
+  auto const after_load = chrono::steady_clock::now();
+  auto const dur_load = chrono::duration_cast<chrono::milliseconds>(after_load - before_load);
+  l.info("Loading situations finished in {}", dur_load);
+
+  auto handler = routemon::api::handler{l, std::move(pub)};
+  auto http_server = routemon::srv::server{l, std::move(lsel), std::move(handler)};
+  http_server.spawn(ioc);
+  ioc.run();
+
+  l.error("I/O context stopped");
+  return exit_status::failure;
+}
+
+auto main(int argc, char* argv[]) -> int {
+  if (argc < 0) {
+    std::cout << "Fatal: argument count below zero" << std::endl;
+    return EXIT_FAILURE;
+  }
+  auto res = real_main(std::span{const_cast<char const**>(argv), static_cast<std::size_t>(argc)});
+  switch (res) {
+  case exit_status::failure:
+    return EXIT_FAILURE;
+  case exit_status::bad_usage:
+    return 2;
+  }
+}
-- 
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