git.m6w6.name Git - awesomized/libmemcached/blob - libtest/server.h

   1 /*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   2  *
   3  *  Data Differential YATL (i.e. libtest)  library
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   5  *  Copyright (C) 2012 Data Differential, http://datadifferential.com/
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  36
  37 #pragma once
  38
  39 #include <libtest/cmdline.h>
  40
  41 #include <cassert>
  42 #include <cstdio>
  43 #include <cstring>
  44 #include <netdb.h>
  45 #include <netinet/in.h>
  46 #include <string>
  47 #include <unistd.h>
  48 #include <vector>
  49
  50 namespace libtest {
  51
  52 struct Server {
  53 private:
  54   typedef std::vector< std::pair<std::string, std::string> > Options;
  55
  56 private:
  57   uint64_t _magic;
  58   bool _is_socket;
  59   std::string _socket;
  60   std::string _sasl;
  61   std::string _pid_file;
  62   std::string _log_file;
  63   std::string _base_command; // executable command which include libtool, valgrind, gdb, etc
  64   std::string _running; // Current string being used for system()
  65
  66 protected:
  67   in_port_t _port;
  68   std::string _hostname;
  69   std::string _extra_args;
  70
  71 public:
  72   Server(const std::string& hostname, const in_port_t port_arg,
  73          const std::string& executable, const bool _is_libtool,
  74          const bool is_socket_arg= false);
  75
  76   virtual ~Server();
  77
  78   virtual const char *name()= 0;
  79   virtual bool is_libtool()= 0;
  80
  81   virtual bool has_socket_file_option() const
  82   {
  83     return false;
  84   }
  85
  86   virtual void socket_file_option(Application& app, const std::string& socket_arg)
  87   {
  88     if (socket_arg.empty() == false)
  89     {
  90       std::string buffer("--socket=");
  91       buffer+= socket_arg;
  92       app.add_option(buffer);
  93     }
  94   }
  95
  96   virtual bool has_log_file_option() const
  97   {
  98     return false;
  99   }
 100
 101   virtual void log_file_option(Application& app, const std::string& arg)
 102   {
 103     if (arg.empty() == false)
 104     {
 105       std::string buffer("--log-file=");
 106       buffer+= arg;
 107       app.add_option(buffer);
 108     }
 109   }
 110
 111   virtual void pid_file_option(Application& app, const std::string& arg)
 112   {
 113     if (arg.empty() == false)
 114     {
 115       std::string buffer("--pid-file=");
 116       buffer+= arg;
 117       app.add_option(buffer);
 118     }
 119   }
 120
 121   virtual bool has_port_option() const
 122   {
 123     return false;
 124   }
 125
 126   virtual void port_option(Application& app, in_port_t arg)
 127   {
 128     if (arg > 0)
 129     {
 130       char buffer[1024];
 131       snprintf(buffer, sizeof(buffer), "--port=%d", int(arg));
 132       app.add_option(buffer);
 133     }
 134   }
 135
 136   virtual bool broken_socket_cleanup()
 137   {
 138     return false;
 139   }
 140
 141   virtual bool broken_pid_file()
 142   {
 143     return false;
 144   }
 145
 146   const std::string& pid_file() const
 147   {
 148     return _pid_file;
 149   }
 150
 151   const std::string& base_command() const
 152   {
 153     return _base_command;
 154   }
 155
 156   const std::string& log_file() const
 157   {
 158     return _log_file;
 159   }
 160
 161   const std::string& hostname() const
 162   {
 163     return _hostname;
 164   }
 165
 166   const std::string& socket() const
 167   {
 168     return _socket;
 169   }
 170
 171   bool has_socket() const
 172   {
 173     return _is_socket;
 174   }
 175
 176   bool cycle();
 177
 178   virtual bool ping()= 0;
 179
 180   bool init(const char *argv[]);
 181   virtual bool build()= 0;
 182
 183   void add_option(const std::string&);
 184   void add_option(const std::string&, const std::string&);
 185
 186   in_port_t port() const
 187   {
 188     return _port;
 189   }
 190
 191   bool has_port() const
 192   {
 193     return (_port != 0);
 194   }
 195
 196   virtual bool has_syslog() const
 197   {
 198     return false;
 199   }
 200
 201   // Reset a server if another process has killed the server
 202   void reset()
 203   {
 204     _pid_file.clear();
 205     _log_file.clear();
 206   }
 207
 208   pid_t pid() const;
 209
 210   bool has_pid() const;
 211
 212   virtual bool has_pid_file() const
 213   {
 214     return true;
 215   }
 216
 217   const std::string& error()
 218   {
 219     return _error;
 220   }
 221
 222   void error(std::string arg)
 223   {
 224     _error= arg;
 225   }
 226
 227   void reset_error()
 228   {
 229     _error.clear();
 230   }
 231
 232   virtual bool wait_for_pidfile() const;
 233
 234   bool check_pid(pid_t pid_arg) const
 235   {
 236     return (pid_arg > 1);
 237   }
 238
 239   bool is_socket() const
 240   {
 241     return _is_socket;
 242   }
 243
 244   const std::string running() const
 245   {
 246     return _running;
 247   }
 248
 249   bool check();
 250
 251   std::string log_and_pid();
 252
 253   bool kill();
 254   bool start();
 255   bool command(libtest::Application& app);
 256
 257   bool validate();
 258
 259   void out_of_ban_killed(bool arg)
 260   {
 261     out_of_ban_killed_= arg;
 262   }
 263
 264   bool out_of_ban_killed()
 265   {
 266     return out_of_ban_killed_;
 267   }
 268
 269   void timeout(uint32_t timeout_)
 270   {
 271     _timeout= timeout_;
 272   }
 273
 274 protected:
 275   bool set_pid_file();
 276   Options _options;
 277   Application _app;
 278
 279 private:
 280   bool is_helgrind() const;
 281   bool is_valgrind() const;
 282   bool is_debug() const;
 283   bool set_log_file();
 284   bool set_socket_file();
 285   void reset_pid();
 286   bool out_of_ban_killed_;
 287   bool args(Application&);
 288
 289   std::string _error;
 290   uint32_t _timeout; // This number should be high enough for valgrind startup (which is slow)
 291 };
 292
 293 std::ostream& operator<<(std::ostream& output, const libtest::Server &arg);
 294
 295 } // namespace libtest
 296
 297