# Copyright (C) 2013 INRIA
#
# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation;
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# Author: Alina Quereilhac <alina.quereilhac@inria.fr>
from nepi.execution.attribute import Attribute, Flags, Types
-from nepi.execution.trace import Trace, TraceAttr
-from nepi.execution.resource import ResourceManager, clsinit_copy, ResourceState, \
+from nepi.execution.resource import clsinit_copy, ResourceState, \
ResourceAction
from nepi.resources.linux.application import LinuxApplication
from nepi.resources.linux.ccn.ccnr import LinuxCCNR
-from nepi.util.timefuncs import strfnow, strfdiff
+from nepi.util.timefuncs import tnow
import os
-reschedule_delay = "0.5s"
-
@clsinit_copy
class LinuxCCNContent(LinuxApplication):
- _rtype = "LinuxCCNContent"
+ _rtype = "linux::CCNContent"
@classmethod
def _register_attributes(cls):
content_name = Attribute("contentName",
"The name of the content to publish (e.g. ccn:/VIDEO) ",
- flags = Flags.ExecReadOnly)
+ flags = Flags.Design)
content = Attribute("content",
"The content to publish. It can be a path to a file or plain text ",
- flags = Flags.ExecReadOnly)
+ flags = Flags.Design)
+
+ scope = Attribute("scope",
+ "Use the given scope on the start-write request (if -r specified). "
+ "scope can be 1 (local), 2 (neighborhood), or 3 (unlimited). "
+ "Note that a scope of 3 is encoded as the absence of any scope in the interest. ",
+ type = Types.Integer,
+ default = 1,
+ flags = Flags.Design)
cls._register_attribute(content_name)
cls._register_attribute(content)
+ cls._register_attribute(scope)
def __init__(self, ec, guid):
super(LinuxCCNContent, self).__init__(ec, guid)
self._home = "content-%s" % self.guid
- self._published = False
@property
def ccnr(self):
- ccnr = self.get_connected(LinuxCCNR.rtype())
+ ccnr = self.get_connected(LinuxCCNR.get_rtype())
if ccnr: return ccnr[0]
return None
+ @property
+ def ccnd(self):
+ if self.ccnr: return self.ccnr.ccnd
+ return None
+
@property
def node(self):
if self.ccnr: return self.ccnr.node
return None
- def deploy(self):
- if not self.get("command"):
- self.set("command", self._default_command)
-
- if not self.get("env"):
- self.set("env", self._default_environment)
+ def do_deploy(self):
+ if not self.ccnr or self.ccnr.state < ResourceState.READY:
+ self.debug("---- RESCHEDULING DEPLOY ---- node state %s " % self.node.state )
+
+ # ccnr needs to wait until ccnd is deployed and running
+ self.ec.schedule(self.reschedule_delay, self.deploy)
+ else:
+ if not self.get("command"):
+ self.set("command", self._start_command)
+
+ if not self.get("env"):
+ self.set("env", self._environment)
- if not self.get("stdin"):
# set content to stdin, so the content will be
# uploaded during provision
self.set("stdin", self.get("content"))
- # Wait until associated ccnd is provisioned
- ccnr = self.ccnr
+ command = self.get("command")
- if not ccnr or ccnr.state < ResourceState.READY:
- # ccnr needs to wait until ccnd is deployed and running
- self.ec.schedule(reschedule_delay, self.deploy)
- else:
- # Invoke the actual deployment
- super(LinuxCCNContent, self).deploy()
-
- # As soon as the ccnr is running we can push the content
- # to the repository ( we don't want to lose time launching
- # writting the content to the repository later on )
- if self._state == ResourceState.READY:
- self._start_in_background()
- self._published = True
-
- def start(self):
- # CCNR should already be started by now.
- # Nothing to do but to set the state to STARTED
- if self._published:
- self._start_time = strfnow()
- self._state = ResourceState.STARTED
+ self.info("Deploying command '%s' " % command)
+
+ self.do_discover()
+ self.do_provision()
+
+ self.set_ready()
+
+ def upload_start_command(self):
+ command = self.get("command")
+ env = self.get("env")
+
+ self.info("Uploading command '%s'" % command)
+
+ # We want to make sure the content is published
+ # before the experiment starts.
+ # Run the command as a bash script in the background,
+ # in the host ( but wait until the command has
+ # finished to continue )
+ env = self.replace_paths(env)
+ command = self.replace_paths(command)
+
+ (out, err), proc = self.execute_command(command,
+ env, blocking = True)
+
+ if proc.poll():
+ msg = "Failed to execute command"
+ self.error(msg, out, err)
+ raise RuntimeError(msg)
+
+ def do_start(self):
+ if self.state == ResourceState.READY:
+ command = self.get("command")
+ self.info("Starting command '%s'" % command)
+
+ self.set_started()
else:
- msg = "Failed to execute command '%s'" % command
+ msg = " Failed to execute command '%s'" % command
self.error(msg, out, err)
- self._state = ResourceState.FAILED
- raise RuntimeError, msg
+ raise RuntimeError(msg)
@property
- def state(self):
- state = super(LinuxCCNContent, self).state
- if self._state in [ResourceState.FINISHED, ResourceState.FAILED]:
- self._published = False
-
- if self._state == ResourceState.READY:
- # CCND is really deployed only when ccn daemon is running
- if not self._published:
- return ResourceState.PROVISIONED
-
- return self._state
+ def _start_command(self):
+ command = ["ccnseqwriter"]
+ command.append("-r %s" % self.get("contentName"))
+ command.append("-s %d" % self.get("scope"))
+ command.append("< %s" % os.path.join(self.app_home, 'stdin'))
- @property
- def _default_command(self):
- return "ccnseqwriter -r %s " % self.get("contentName")
+ command = " ".join(command)
+ return command
@property
- def _default_environment(self):
- env = "PATH=$PATH:${EXP_HOME}/ccnx/bin "
- return env
-
+ def _environment(self):
+ return self.ccnd.path
+
def valid_connection(self, guid):
# TODO: Validate!
return True
git://git.onelab.eu / nepi.git / blobdiff