Added version option and info.

README.md

@@ -292,6 +292,7 @@ To see all the available options run `flight_sql --help`.
 flight_sql --help
 Allowed options:
   --help                              produce this help message
+  --version                           Print the version and exit
   -B [ --backend ] arg (=duckdb)      Specify the database backend. Allowed 
                                       options: duckdb, sqlite.
   -H [ --hostname ] arg               Specify the hostname to listen on for the

src/flight_sql.cpp

@@ -12,6 +12,7 @@ int main(int argc, char **argv) {
     po::options_description desc("Allowed options");
     desc.add_options()
             ("help", "produce this help message")
+            ("version", "Print the version and exit")
             ("backend,B", po::value<std::string>()->default_value("duckdb"),
              "Specify the database backend. Allowed options: duckdb, sqlite.")
             ("hostname,H", po::value<std::string>()->default_value(""),
@@ -49,7 +50,12 @@ int main(int argc, char **argv) {
 
     if (vm.count("help")) {
         std::cout << desc << "\n";
-        return 1;
+        return 0;
+    }
+
+    if (vm.count("version")) {
+        std::cout << "Flight SQL Server CLI: " << FLIGHT_SQL_SERVER_VERSION << std::endl;
+        return 0;
     }
 
     std::string backend_str = vm["backend"].as<std::string>();

src/library/flight_sql_library.cpp

@@ -120,7 +120,7 @@ arrow::Result<std::shared_ptr<arrow::flight::sql::FlightSqlServerBase>> FlightSQ
         // Exit with a clean error code (0) on SIGTERM
         ARROW_CHECK_OK(server->SetShutdownOnSignals({SIGTERM}));
 
-        std::cout << "Apache Arrow Flight SQL server - with engine: " << db_type << " - will listen on "
+        std::cout << "Apache Arrow Flight SQL server version: " << FLIGHT_SQL_SERVER_VERSION << " - with engine: " << db_type << " - will listen on "
                   << server->location().ToString() << std::endl;
 
         return server;

src/library/include/flight_sql_library.h

@@ -4,6 +4,7 @@
 #include <filesystem>
 
 // Constants
+const std::string FLIGHT_SQL_SERVER_VERSION = "v1.1.19";  // For now - be sure to update this version with the git tag!  TODO: automate this
 const std::string DEFAULT_FLIGHT_HOSTNAME = "0.0.0.0";
 const std::string DEFAULT_FLIGHT_USERNAME = "flight_username";
 const int DEFAULT_FLIGHT_PORT = 31337;