src/nepi/resources/linux/ccn/ccnpingserver.py

   1 #
   2 #    NEPI, a framework to manage network experiments
   3 #    Copyright (C) 2013 INRIA
   4 #
   5 #    This program is free software: you can redistribute it and/or modify
   6 #    it under the terms of the GNU General Public License as published by
   7 #    the Free Software Foundation, either version 3 of the License, or
   8 #    (at your option) any later version.
   9 #
  10 #    This program is distributed in the hope that it will be useful,
  11 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 #    GNU General Public License for more details.
  14 #
  15 #    You should have received a copy of the GNU General Public License
  16 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 #
  18 # Author: Alina Quereilhac <alina.quereilhac@inria.fr>
  19
  20 from nepi.execution.attribute import Attribute, Flags, Types
  21 from nepi.execution.resource import ResourceManager, clsinit_copy, \
  22         ResourceState, reschedule_delay, failtrap
  23 from nepi.resources.linux.ccn.ccnapplication import LinuxCCNApplication
  24 from nepi.util.timefuncs import tnow, tdiffsec
  25
  26 import os
  27
  28 @clsinit_copy
  29 class LinuxCCNPingServer(LinuxCCNApplication):
  30     _rtype = "LinuxCCNPingServer"
  31
  32     @classmethod
  33     def _register_attributes(cls):
  34         daemon = Attribute("d",
  35             "Run ccnping server as a daemon in background",
  36             type = Types.Bool,
  37             default = False,
  38             flags = Flags.ExecReadOnly)
  39
  40         freshness = Attribute("x",
  41             "Set FreshnessSeconds",
  42             type = Types.Integer,
  43             flags = Flags.ExecReadOnly)
  44
  45         prefix = Attribute("prefix",
  46             "Prefix to serve content (e.g. ccnx:/name/prefix)",
  47             flags = Flags.ExecReadOnly)
  48
  49         cls._register_attribute(daemon)
  50         cls._register_attribute(freshness)
  51         cls._register_attribute(prefix)
  52
  53     def __init__(self, ec, guid):
  54         super(LinuxCCNPingServer, self).__init__(ec, guid)
  55         self._home = "ccnping-serv-%s" % self.guid
  56
  57     @failtrap
  58     def deploy(self):
  59         if not self.get("command"):
  60             self.set("command", self._start_command)
  61
  62         if not self.get("env"):
  63             self.set("env", self._environment)
  64
  65         if not self.get("depends"):
  66             self.set("depends", self._dependencies)
  67
  68         if not self.get("build"):
  69             self.set("build", self._build)
  70
  71         if not self.get("install"):
  72             self.set("install", self._install)
  73
  74         super(LinuxCCNPingServer, self).deploy()
  75
  76     @property
  77     def _start_command(self):
  78         args = []
  79         args.append("ccnpingserver")
  80         args.append(self.get("prefix"))
  81         if self.get("d") == True:
  82             args.append("-d")
  83         if self.get("x"):
  84             args.append("-x %d" % self.get("x"))
  85
  86         command = " ".join(args)
  87
  88         return command
  89
  90     @property
  91     def _dependencies(self):
  92         return "git"
  93
  94     @property
  95     def _build(self):
  96         return (
  97             # Evaluate if ccnx binaries are already installed
  98             " ( "
  99                 " test -f ${BIN}/ccnping && "
 100                 " echo 'binaries found, nothing to do' "
 101             " ) || ( "
 102             # If not, untar and build
 103                 " ( "
 104                     " git clone git://github.com/NDN-Routing/ccnping ${SRC}/ccnping "
 105                  " ) && "
 106                     # build
 107                     "cd ${SRC}/ccnping && "
 108                     " ( "
 109                     " ./configure LDFLAGS=-L${SRC}/ccnx-0.7.2/lib CFLAGS=-I${SRC}/ccnx-0.7.2/include "
 110                     " --prefix=${BIN}/ccnping && make "
 111                     " ) "
 112              " )")
 113
 114     @property
 115     def _install(self):
 116         return (
 117             # Evaluate if ccnx binaries are already installed
 118             " ( "
 119                 " test -f ${BIN}/ccnping && "
 120                 " echo 'binaries found, nothing to do' "
 121             " ) || ( "
 122             # If not, install
 123                 "  mkdir -p ${BIN}/ccnping && "
 124                 "  mv ${SRC}/ccnping/ccnping ${BIN}/ccnping/ && "
 125                 "  mv ${SRC}/ccnping/ccnpingserver ${BIN}/ccnping/ "
 126             " )"
 127             )
 128
 129     @property
 130     def _environment(self):
 131         return "%s:%s" % (self.ccnd.path, "${BIN}/ccnping")
 132
 133     def valid_connection(self, guid):
 134         # TODO: Validate!
 135         return True
 136