Revert polycubed persistency support

Documentation/polycubed/polycubed.rst

@@ -54,34 +54,7 @@ If the same parameter is specified in both, the configuration file and the comma
     daemon: true
     #p: 6000 <-- this is NOT supported, only long options are
 
-
-
-Persistency
-^^^^^^^^^^^
-
-Polycubed has persistent capabilities, which means that (1) it can automatically load the configuration that was present when the daemon was shut down, (2) each time a configuration command is issued, it is automatically dumped on disk.
-This enables polycubed also to recover from failures, such as rebooting the machine.
-By default, the daemon keeps in memory an instance of all the topology, including the configuration of each individual service.
-Topology and configuration are automatically updated at each new command; the configuration is also dumped to disk, on file ``/etc/polycube/cubes.yaml``.
-The standard behavior of the daemon at startup is to load the latest topology that was active at the end of the previous execution.
-Users can load a different topology file by using the ``--cubes-dump`` flag followed by the path to the file.
-In case we want to start polycubed with an empty topology, avoiding any possible load at startup, we can launch polycubed with the ``--cubes-init`` flag. Beware that in this case any existing configuration in the default file will be overwritten.
-Finally, persistency can be disabled with the ``--cubes-nodump`` flag; this would also avoid any (very limited) performance penalty introduced by this feature.
-
-::
-
-    # start polycubed with custom cubes configuration
-    polycubed --cubes-dump ~/Desktop/myCubes.yaml
-
-    # start polycubed with an empty topology
-    polycubed --cubes-init
-
-    # start daemon without topology saving functionalities
-    polycubed --cubes-nodump
-
-
-
 Rest API
 ^^^^^^^^
 
-TODO...
+TODO...

src/polycubed/src/CMakeLists.txt

@@ -62,7 +62,6 @@ set(polycubed_sources
   utils/veth.cpp
   utils/netlink.cpp
   utils/utils.cpp
-  cubes_dump.cpp
   ${server_sources}
   ${CMAKE_CURRENT_BINARY_DIR}/load_services.cpp
   ${CMAKE_CURRENT_BINARY_DIR}/version.cpp)

src/polycubed/src/config.cpp

@@ -32,17 +32,13 @@ namespace configuration {
 
 #define LOGLEVEL spdlog::level::level_enum::info
 #define DAEMON false
-#define CUBESINIT false
-#define CUBESNODUMP false
 #define PIDFILE "/var/run/polycube.pid"
 #define SERVER_PORT 9000
 #define SERVER_IP "localhost"
 #define LOGFILE "/var/log/polycube/polycubed.log"
 #define CONFIGFILEDIR "/etc/polycube"
 #define CONFIGFILENAME "polycubed.conf"
-#define CUBESDUMPFILE "cubes.yaml"
 #define CONFIGFILE (CONFIGFILEDIR "/" CONFIGFILENAME)
-#define CUBESDUMPFILEPATH (CONFIGFILEDIR "/" CUBESDUMPFILE)
 
 static void show_usage(const std::string &name) {
   std::cout << std::boolalpha;
@@ -68,11 +64,6 @@ static void show_usage(const std::string &name) {
             << ")" << std::endl;
   std::cout << "--configfile: configuration file (default: " << CONFIGFILE
             << ")" << std::endl;
-  std::cout << "--cubes-dump: file that keeps the last topology, "
-               "including the configuration of all cubes (default: " << CUBESDUMPFILEPATH
-            << ")" << std::endl;
-  std::cout << "--cubes-init: starts the daemon with an empty topology" << std::endl;
-  std::cout << "--cubes-nodump: starts the daemon without dumping updates to file" << std::endl;
   std::cout << "--cert-blacklist: path to black listed certificates"
             << std::endl;
   std::cout << "--cert-whitelist: path to white listed certificates"
@@ -104,10 +95,7 @@ Config::Config()
       server_port(SERVER_PORT),
       server_ip(SERVER_IP),
       logfile(LOGFILE),
-      configfile(CONFIGFILE),
-      cubes_dump_file(CUBESDUMPFILEPATH),
-      cubes_init(CUBESINIT),
-      cubes_nodump(CUBESNODUMP){}
+      configfile(CONFIGFILE) {}
 
 Config::~Config() {}
 
@@ -192,31 +180,6 @@ void Config::setLogFile(const std::string &value) {
   logfile = value;
 }
 
-std::string Config::getCubesDumpFilePath() const {
-  return cubes_dump_file;
-}
-
-void Config::setCubesDumpFilePath(const std::string &value) {
-  CHECK_OVERWRITE("cubes-dump", value, cubes_dump_file, CUBESDUMPFILEPATH);
-  cubes_dump_file = value;
-}
-
-bool Config::getCubesInitTopology() const {
-  return cubes_init;
-}
-
-void Config::setCubesInitTopology() {
-  cubes_init = true;
-}
-
-bool Config::getCubesNoDump() const {
-  return cubes_nodump;
-}
-
-void Config::setCubesNoDump() {
-  cubes_nodump = true;
-}
-
 std::string Config::getCertPath() const {
   return cert_path;
 }
@@ -283,8 +246,6 @@ void Config::create_configuration_file(const std::string &path) {
   file << "addr: " << server_ip << std::endl;
   file << "# file to save polycube logs" << std::endl;
   file << "logfile: " << logfile << std::endl;
-  file << "# file to save last topology" << std::endl;
-  file << "cubes-dump: " << cubes_dump_file << std::endl;
   file << "# Security related:" << std::endl;
   file << "# server certificate " << std::endl;
   file << "#cert: path_to_certificate_file" << std::endl;
@@ -309,9 +270,6 @@ void Config::dump() {
   logger->info(" port: {}", server_port);
   logger->info(" addr: {}", server_ip);
   logger->info(" logfile: {}", logfile);
-  logger->info(" cubes-dump: {}", cubes_dump_file);
-  logger->info(" cubes-init: {}", cubes_init);
-  logger->info(" cubes-nodump: {}", cubes_nodump);
   if (!cert_path.empty()) {
     logger->info(" cert: {}", cert_path);
   }
@@ -405,9 +363,6 @@ static struct option options[] = {
     {"cacert", required_argument, NULL, 5},
     {"cert-whitelist", required_argument, NULL, 6},
     {"cert-blacklist", required_argument, NULL, 7},
-    {"cubes-dump", required_argument, NULL, 8},
-    {"cubes-init", no_argument, NULL, 9},
-    {"cubes-nodump", no_argument, NULL, 10},
     {NULL, 0, NULL, 0},
 };
 
@@ -453,15 +408,6 @@ void Config::load_from_cli(int argc, char *argv[]) {
     case 7:
       setCertBlacklistPath(optarg);
       break;
-    case 8:
-      setCubesDumpFilePath(optarg);
-      break;
-    case 9:
-      setCubesInitTopology();
-      break;
-    case 10:
-      setCubesNoDump();
-      break;
     }
   }
 }

src/polycubed/src/config.h

@@ -53,18 +53,6 @@ class Config {
   std::string getLogFile() const;
   void setLogFile(const std::string &value);
 
-  // file where last topology is saved
-  std::string getCubesDumpFilePath() const;
-  void setCubesDumpFilePath(const std::string &value);
-
-  // set to get an empty topology
-  bool getCubesInitTopology() const;
-  void setCubesInitTopology();
-
-  // set to avoid daemon to dump updates to file
-  bool getCubesNoDump() const;
-  void setCubesNoDump();
-
   // path of certificate & key to be used in server
   std::string getCertPath() const;
   void setCertPath(const std::string &value);
@@ -92,14 +80,11 @@ class Config {
 
   spdlog::level::level_enum loglevel;
   bool daemon;
-  bool cubes_init;
-  bool cubes_nodump;
   std::string pidfile;
   uint16_t server_port;
   std::string server_ip;
   std::string logfile;
   std::string configfile;
-  std::string cubes_dump_file;
   std::string cert_path, key_path;
   std::string cacert_path;
   std::string cert_whitelist_path;