Adding NetNSApplication and test

[nepi.git] / src / nepi / resources / netns / netnsapplication.py

diff --git a/src/nepi/resources/netns/netnsapplication.py b/src/nepi/resources/netns/netnsapplication.py
new file mode 100644 (file)
index 0000000..b790416
--- /dev/null
+++ b/src/nepi/resources/netns/netnsapplication.py
@@ -0,0 +1,102 @@
+#
+#    NEPI, a framework to manage network experiments
+#    Copyright (C) 2014 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.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# Author: Alina Quereilhac <alina.quereilhac@inria.fr>
+
+from nepi.execution.attribute import Attribute, Flags, Types
+from nepi.execution.resource import clsinit_copy
+from nepi.resources.netns.netnsbase import NetNSBase
+from nepi.execution.resource import clsinit_copy, ResourceState, \
+        reschedule_delay
+
+import shlex
+
+@clsinit_copy
+class NetNSApplication(NetNSBase):
+    _rtype = "netns::Application"
+
+    def __init__(self, ec, guid):
+        super(NetNSApplication, self).__init__(ec, guid)
+        self._traces = dict()
+
+    @classmethod
+    def _register_attributes(cls):
+        command = Attribute("command", "Command to execute", flags=Flags.Design)
+        cls._register_attribute(command)
+
+    @property
+    def emulation(self):
+        return self.node.emulation
+
+    @property
+    def node(self):
+        from nepi.resources.netns.netnsnode import NetNSNode
+        node = self.get_connected(NetNSNode.get_rtype())
+
+        if not node: 
+            msg = "Route not connected to Node!!"
+            self.error(msg)
+            raise RuntimeError, msg
+
+        return node[0]
+
+    @property
+    def _rms_to_wait(self):
+        return [self.node]
+
+    def do_start(self):
+        if self.simulation.state < ResourceState.STARTED:
+            self.debug("---- RESCHEDULING START ----" )
+            self.ec.schedule(reschedule_delay, self.start)
+        else:
+            self._configure_traces()
+
+            command = shlex.split(self.get("command"))
+            stdout = self._traces["stdout"]
+            stderr = self._traces["stderr"]
+            self._uuid = self.emulation.invoke(self.node.uuid, 
+                    "Popen", command, stdout = stdout, 
+                    stderr = stderr)
+
+            super(NetNSApplication, self).do_start()
+            self._start_time = self.emulation.start_time
+
+    def _configure_traces(self):
+        stdout = "%s/%d.stdout " % (self.emulation.run_home, self.pid)
+        stderr = "%s/%d.stderr " % (self.emulation.run_home, self.pid)
+        self._trace_filename["stdout"] = stdout 
+        self._trace_filename["stderr"] = stderr
+        self._traces["stdout"] = self.emulation.create("open", stdout, "w")
+        self._traces["stderr"] = self.emulation.create("open", stderr, "w")
+
+    @property
+    def state(self):
+        if self._state == ResourceState.STARTED:
+            retcode = self.emulation.invoke(self.uuid, "poll")
+   
+            if retcode:
+                if ret == 0:
+                    self.set_stopped()
+                else:
+                    out = ""
+                    msg = " Failed to execute command '%s'" % self.get("command")
+                    err = self.trace("stderr")
+                    self.error(msg, out, err)
+                    self.do_fail()
+
+        return self._state
+