src/nepi/resources/linux/ccn/ccnd.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.trace import Trace, TraceAttr
  22 from nepi.execution.resource import ResourceManager, clsinit_copy, ResourceState, \
  23     reschedule_delay
  24 from nepi.resources.linux.application import LinuxApplication
  25 from nepi.resources.linux.node import OSType
  26 from nepi.util.timefuncs import tnow, tdiffsec
  27
  28 import os
  29
  30 # TODO: use ccndlogging to dynamically change the logging level
  31
  32
  33 @clsinit_copy
  34 class LinuxCCND(LinuxApplication):
  35     _rtype = "LinuxCCND"
  36
  37     @classmethod
  38     def _register_attributes(cls):
  39         debug = Attribute("debug", "Sets the CCND_DEBUG environmental variable. "
  40             " Allowed values are : \n"
  41             "  0 - no messages \n"
  42             "  1 - basic messages (any non-zero value gets these) \n"
  43             "  2 - interest messages \n"
  44             "  4 - content messages \n"
  45             "  8 - matching details \n"
  46             "  16 - interest details \n"
  47             "  32 - gory interest details \n"
  48             "  64 - log occasional human-readable timestamps \n"
  49             "  128 - face registration debugging \n"
  50             "  -1 - max logging \n"
  51             "  Or apply bitwise OR to these values to get combinations of them",
  52             type = Types.Integer,
  53             flags = Flags.ExecReadOnly)
  54
  55         port = Attribute("port", "Sets the CCN_LOCAL_PORT environmental variable. "
  56             "Defaults to 9695 ",
  57             flags = Flags.ExecReadOnly)
  58
  59         sockname = Attribute("sockname",
  60             "Sets the CCN_LOCAL_SCOKNAME environmental variable. "
  61             "Defaults to /tmp/.ccnd.sock",
  62             flags = Flags.ExecReadOnly)
  63
  64         capacity = Attribute("capacity",
  65             "Sets the CCND_CAP environmental variable. "
  66             "Capacity limit in terms of ContentObjects",
  67             flags = Flags.ExecReadOnly)
  68
  69         mtu = Attribute("mtu", "Sets the CCND_MTU environmental variable. ",
  70             flags = Flags.ExecReadOnly)
  71
  72         data_pause = Attribute("dataPauseMicrosec",
  73             "Sets the CCND_DATA_PAUSE_MICROSEC environmental variable. ",
  74             flags = Flags.ExecReadOnly)
  75
  76         default_stale = Attribute("defaultTimeToStale",
  77              "Sets the CCND_DEFAULT_TIME_TO_STALE environmental variable. ",
  78             flags = Flags.ExecReadOnly)
  79
  80         max_stale = Attribute("maxTimeToStale",
  81             "Sets the CCND_MAX_TIME_TO_STALE environmental variable. ",
  82             flags = Flags.ExecReadOnly)
  83
  84         max_rte = Attribute("maxRteMicrosec",
  85             "Sets the CCND_MAX_RTE_MICROSEC environmental variable. ",
  86             flags = Flags.ExecReadOnly)
  87
  88         keystore = Attribute("keyStoreDirectory",
  89             "Sets the CCND_KEYSTORE_DIRECTORY environmental variable. ",
  90             flags = Flags.ExecReadOnly)
  91
  92         listen_on = Attribute("listenOn",
  93             "Sets the CCND_LISTEN_ON environmental variable. ",
  94             flags = Flags.ExecReadOnly)
  95
  96         autoreg = Attribute("autoreg",
  97             "Sets the CCND_AUTOREG environmental variable. ",
  98             flags = Flags.ExecReadOnly)
  99
 100         prefix = Attribute("prefix",
 101             "Sets the CCND_PREFIX environmental variable. ",
 102             flags = Flags.ExecReadOnly)
 103
 104         cls._register_attribute(debug)
 105         cls._register_attribute(port)
 106         cls._register_attribute(sockname)
 107         cls._register_attribute(capacity)
 108         cls._register_attribute(mtu)
 109         cls._register_attribute(data_pause)
 110         cls._register_attribute(default_stale)
 111         cls._register_attribute(max_stale)
 112         cls._register_attribute(max_rte)
 113         cls._register_attribute(keystore)
 114         cls._register_attribute(listen_on)
 115         cls._register_attribute(autoreg)
 116         cls._register_attribute(prefix)
 117
 118     @classmethod
 119     def _register_traces(cls):
 120         log = Trace("log", "CCND log output")
 121         status = Trace("status", "ccndstatus output")
 122
 123         cls._register_trace(log)
 124         cls._register_trace(status)
 125
 126     def __init__(self, ec, guid):
 127         super(LinuxCCND, self).__init__(ec, guid)
 128         self._home = "ccnd-%s" % self.guid
 129
 130     def deploy(self):
 131         if not self.node or self.node.state < ResourceState.READY:
 132             self.debug("---- RESCHEDULING DEPLOY ---- node state %s " % self.node.state )
 133
 134             # ccnd needs to wait until node is deployed and running
 135             self.ec.schedule(reschedule_delay, self.deploy)
 136         else:
 137             if not self.get("command"):
 138                 self.set("command", self._start_command)
 139
 140             if not self.get("depends"):
 141                 self.set("depends", self._dependencies)
 142
 143             if not self.get("sources"):
 144                 self.set("sources", self._sources)
 145
 146             if not self.get("build"):
 147                 self.set("build", self._build)
 148
 149             if not self.get("install"):
 150                 self.set("install", self._install)
 151
 152             if not self.get("env"):
 153                 self.set("env", self._environment)
 154
 155             command = self.get("command")
 156             env = self.get("env")
 157
 158             self.info("Deploying command '%s' " % command)
 159
 160             # create home dir for application
 161             self.node.mkdir(self.app_home)
 162
 163             # upload sources
 164             self.upload_sources()
 165
 166             # upload code
 167             self.upload_code()
 168
 169             # upload stdin
 170             self.upload_stdin()
 171
 172             # install dependencies
 173             self.install_dependencies()
 174
 175             # build
 176             self.build()
 177
 178             # Install
 179             self.install()
 180
 181             # We want to make sure the repository is running
 182             # before the experiment starts.
 183             # Run the command as a bash script in background,
 184             # in the host ( but wait until the command has
 185             # finished to continue )
 186             env = self.replace_paths(env)
 187             command = self.replace_paths(command)
 188
 189             self.node.run_and_wait(command, self.app_home,
 190                     env = env,
 191                     shfile = "app.sh",
 192                     raise_on_error = True)
 193
 194             self.debug("----- READY ---- ")
 195             self._ready_time = tnow()
 196             self._state = ResourceState.READY
 197
 198     def start(self):
 199         if self._state == ResourceState.READY:
 200             command = self.get("command")
 201             self.info("Starting command '%s'" % command)
 202
 203             self._start_time = tnow()
 204             self._state = ResourceState.STARTED
 205         else:
 206             msg = " Failed to execute command '%s'" % command
 207             self.error(msg, out, err)
 208             self._state = ResourceState.FAILED
 209             raise RuntimeError, msg
 210
 211     def stop(self):
 212         command = self.get('command') or ''
 213         state = self.state
 214
 215         if state == ResourceState.STARTED:
 216             self.info("Stopping command '%s'" % command)
 217
 218             command = "ccndstop"
 219             env = self.get("env")
 220
 221             # replace application specific paths in the command
 222             command = self.replace_paths(command)
 223             env = env and self.replace_paths(env)
 224
 225             # Upload the command to a file, and execute asynchronously
 226             self.node.run_and_wait(command, self.app_home,
 227                         shfile = "ccndstop.sh",
 228                         env = env,
 229                         pidfile = "ccndstop_pidfile",
 230                         ecodefile = "ccndstop_exitcode",
 231                         stdout = "ccndstop_stdout",
 232                         stderr = "ccndstop_stderr")
 233
 234             self._stop_time = tnow()
 235             self._state = ResourceState.STOPPED
 236
 237     @property
 238     def state(self):
 239         # First check if the ccnd has failed
 240         state_check_delay = 0.5
 241         if self._state == ResourceState.STARTED and \
 242                 tdiffsec(tnow(), self._last_state_check) > state_check_delay:
 243             (out, err), proc = self._ccndstatus
 244
 245             retcode = proc.poll()
 246
 247             if retcode == 1 and err.find("No such file or directory") > -1:
 248                 # ccnd is not running (socket not found)
 249                 self._state = ResourceState.FINISHED
 250             elif retcode:
 251                 # other errors ...
 252                 msg = " Failed to execute command '%s'" % self.get("command")
 253                 self.error(msg, out, err)
 254                 self._state = ResourceState.FAILED
 255
 256             self._last_state_check = tnow()
 257
 258         return self._state
 259
 260     @property
 261     def _ccndstatus(self):
 262         env = self.get('env') or ""
 263         environ = self.node.format_environment(env, inline = True)
 264         command = environ + " ccndstatus"
 265         command = self.replace_paths(command)
 266
 267         return self.node.execute(command)
 268
 269     @property
 270     def _start_command(self):
 271         return "ccndstart"
 272
 273     @property
 274     def _dependencies(self):
 275         if self.node.use_rpm:
 276             return ( " autoconf openssl-devel  expat-devel libpcap-devel "
 277                 " ecryptfs-utils-devel libxml2-devel automake gawk "
 278                 " gcc gcc-c++ git pcre-devel make ")
 279         elif self.node.use_deb:
 280             return ( " autoconf libssl-dev libexpat-dev libpcap-dev "
 281                 " libecryptfs0 libxml2-utils automake gawk gcc g++ "
 282                 " git-core pkg-config libpcre3-dev make ")
 283         return ""
 284
 285     @property
 286     def _sources(self):
 287         return "http://www.ccnx.org/releases/ccnx-0.7.2.tar.gz"
 288
 289     @property
 290     def _build(self):
 291         sources = self.get("sources").split(" ")[0]
 292         sources = os.path.basename(sources)
 293
 294         return (
 295             # Evaluate if ccnx binaries are already installed
 296             " ( "
 297                 " test -f ${EXP_HOME}/ccnx/bin/ccnd && "
 298                 " echo 'sources found, nothing to do' "
 299             " ) || ( "
 300             # If not, untar and build
 301                 " ( "
 302                     " mkdir -p ${SOURCES}/ccnx && "
 303                     " tar xf ${SOURCES}/%(sources)s --strip-components=1 -C ${SOURCES}/ccnx "
 304                  " ) && "
 305                     "cd ${SOURCES}/ccnx && "
 306                     # Just execute and silence warnings...
 307                     " ( ./configure && make ) "
 308              " )") % ({ 'sources': sources })
 309
 310     @property
 311     def _install(self):
 312         return (
 313             # Evaluate if ccnx binaries are already installed
 314             " ( "
 315                 " test -f ${EXP_HOME}/ccnx/bin/ccnd && "
 316                 " echo 'sources found, nothing to do' "
 317             " ) || ( "
 318             # If not, install
 319                 "  mkdir -p ${EXP_HOME}/ccnx/bin && "
 320                 "  cp -r ${SOURCES}/ccnx ${EXP_HOME}"
 321             " )"
 322             )
 323
 324     @property
 325     def _environment(self):
 326         envs = dict({
 327             "debug": "CCND_DEBUG",
 328             "port": "CCN_LOCAL_PORT",
 329             "sockname" : "CCN_LOCAL_SOCKNAME",
 330             "capacity" : "CCND_CAP",
 331             "mtu" : "CCND_MTU",
 332             "dataPauseMicrosec" : "CCND_DATA_PAUSE_MICROSEC",
 333             "defaultTimeToStale" : "CCND_DEFAULT_TIME_TO_STALE",
 334             "maxTimeToStale" : "CCND_MAX_TIME_TO_STALE",
 335             "maxRteMicrosec" : "CCND_MAX_RTE_MICROSEC",
 336             "keyStoreDirectory" : "CCND_KEYSTORE_DIRECTORY",
 337             "listenOn" : "CCND_LISTEN_ON",
 338             "autoreg" : "CCND_AUTOREG",
 339             "prefix" : "CCND_PREFIX",
 340             })
 341
 342         env = "PATH=$PATH:${EXP_HOME}/ccnx/bin "
 343         env += " ".join(map(lambda k: "%s=%s" % (envs.get(k), str(self.get(k))) \
 344             if self.get(k) else "", envs.keys()))
 345
 346         return env
 347
 348     def valid_connection(self, guid):
 349         # TODO: Validate!
 350         return True
 351