# Author: Alina Quereilhac <alina.quereilhac@inria.fr>
from nepi.execution.attribute import Attribute, Flags, Types
-from nepi.execution.resource import clsinit_copy, ResourceState, \
- reschedule_delay
-from nepi.resources.linux.application import LinuxApplication
+from nepi.execution.resource import clsinit_copy, ResourceState
+from nepi.resources.linux.tap import LinuxTap
from nepi.resources.planetlab.node import PlanetlabNode
from nepi.util.timefuncs import tnow, tdiffsec
PYTHON_VSYS_VERSION = "1.0"
@clsinit_copy
-class PlanetlabTap(LinuxApplication):
- _rtype = "PlanetlabTap"
+class PlanetlabTap(LinuxTap):
+ _rtype = "planetlab::Tap"
_help = "Creates a TAP device on a PlanetLab host"
- _backend = "planetlab"
+ _platform = "planetlab"
@classmethod
def _register_attributes(cls):
- endpoint_ip = Attribute("endpoint_ip", "IP of the endpoint. This is the attribute "
- "you should use to establish a tunnel or a remote "
- "connection between endpoint",
- flags = Flags.Design)
-
- mac = Attribute("mac", "MAC Address",
- flags = Flags.Design)
-
- endpoint_prefix = Attribute("endpoint_prefix", "IPv4 network prefix of the endpoint",
- type = Types.Integer,
- flags = Flags.Design)
-
- mtu = Attribute("mtu", "Maximum transmition unit for device",
- type = Types.Integer)
-
- devname = Attribute("deviceName",
- "Name of the network interface (e.g. eth0, wlan0, etc)",
- flags = Flags.NoWrite)
-
- up = Attribute("up", "Link up",
- type = Types.Bool)
-
snat = Attribute("snat", "Set SNAT=1",
type = Types.Bool,
flags = Flags.Design)
- pointopoint = Attribute("pointopoint", "Peer IP address",
- flags = Flags.Design)
-
- txqueuelen = Attribute("txqueuelen", "Length of transmission queue",
- flags = Flags.Design)
-
- txqueuelen = Attribute("txqueuelen", "Length of transmission queue",
- flags = Flags.Design)
-
- gre_key = Attribute("greKey",
- "GRE key to be used to configure GRE tunnel",
- default = "1",
- flags = Flags.Design)
-
- gre_remote = Attribute("greRemote",
- "Public IP of remote endpoint for GRE tunnel",
- flags = Flags.Design)
-
- tear_down = Attribute("tearDown",
- "Bash script to be executed before releasing the resource",
- flags = Flags.Design)
-
- cls._register_attribute(endpoint_ip)
- cls._register_attribute(mac)
- cls._register_attribute(endpoint_prefix)
- cls._register_attribute(mtu)
- cls._register_attribute(devname)
- cls._register_attribute(up)
cls._register_attribute(snat)
- cls._register_attribute(pointopoint)
- cls._register_attribute(txqueuelen)
- cls._register_attribute(gre_key)
- cls._register_attribute(gre_remote)
- cls._register_attribute(tear_down)
def __init__(self, ec, guid):
super(PlanetlabTap, self).__init__(ec, guid)
if node: return node[0]
raise RuntimeError, "TAP/TUN devices must be connected to Node"
- @property
- def gre_enabled(self):
- if not self._gre_enabled:
- from nepi.resources.linux.gretunnel import LinuxGRETunnel
- gre = self.get_connected(LinuxGRETunnel.get_rtype())
- if gre: self._gre_enabled = True
-
- return self._gre_enabled
-
def upload_sources(self):
scripts = []
scripts.append(pl_vif_down)
# udp-connect python script
- pl_vif_connect = os.path.join(os.path.dirname(__file__), "scripts",
- "pl-vif-udp-connect.py")
+ udp_connect = os.path.join(os.path.dirname(__file__),
+ "..",
+ "linux",
+ "scripts",
+ "linux-udp-connect.py")
- scripts.append(pl_vif_connect)
+ scripts.append(udp_connect)
# tunnel creation python script
- tunchannel = os.path.join(os.path.dirname(__file__), "..", "linux",
- "scripts", "tunchannel.py")
+ tunchannel = os.path.join(os.path.dirname(__file__),
+ "..",
+ "linux",
+ "scripts",
+ "tunchannel.py")
scripts.append(tunchannel)
overwrite = True)
def upload_start_command(self):
- # If GRE mode is enabled, TAP creation is delayed until the
- # tunnel is established
+ super(PlanetlabTap, self).upload_start_command()
+
+ # Planetlab TAPs always add a PI header
+ self.set("pi", True)
+
if not self.gre_enabled:
- # Overwrite file every time.
- # The start.sh has the path to the socket, wich should change
- # on every experiment run.
- super(PlanetlabTap, self).upload_start_command(overwrite = True)
-
- # We want to make sure the device is up and running
- # before the deploy finishes, so we execute now the
- # start script. We run it in background, because the
- # TAP will live for as long as the process that
- # created it is running, and wait until the TAP
- # is created.
- self._run_in_background()
-
# After creating the TAP, the pl-vif-create.py script
# will write the name of the TAP to a file. We wait until
# we can read the interface name from the file.
vif_name = self.wait_vif_name()
self.set("deviceName", vif_name)
- def do_deploy(self):
- if not self.node or self.node.state < ResourceState.PROVISIONED:
- self.ec.schedule(reschedule_delay, self.deploy)
- else:
- if not self.get("command"):
- self.set("command", self._start_command)
-
- if not self.get("depends"):
- self.set("depends", self._dependencies)
-
- if not self.get("install"):
- self.set("install", self._install)
-
- self.do_discover()
- self.do_provision()
-
- self.set_ready()
-
- 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
- self.error(msg, out, err)
- raise RuntimeError, msg
-
- def do_stop(self):
- command = self.get('command') or ''
-
- if self.state == ResourceState.STARTED:
- self.info("Stopping command '%s'" % command)
-
- command = "bash %s" % os.path.join(self.app_home, "stop.sh")
- (out, err), proc = self.execute_command(command,
- blocking = True)
-
- if err:
- msg = " Failed to stop command '%s' " % command
- self.error(msg, out, err)
-
- self.set_stopped()
-
- @property
- def state(self):
- state_check_delay = 0.5
- if self._state == ResourceState.STARTED and \
- tdiffsec(tnow(), self._last_state_check) > state_check_delay:
-
- if self.get("deviceName"):
- (out, err), proc = self.node.execute("ifconfig")
-
- if out.strip().find(self.get("deviceName")) == -1:
- # tap is not running is not running (socket not found)
- self.set_stopped()
-
- self._last_state_check = tnow()
-
- return self._state
-
- def do_release(self):
- # Node needs to wait until all associated RMs are released
- # to be released
- from nepi.resources.linux.tunnel import LinuxTunnel
- rms = self.get_connected(LinuxTunnel.get_rtype())
-
- for rm in rms:
- if rm.state < ResourceState.STOPPED:
- self.ec.schedule(reschedule_delay, self.release)
- return
-
- super(PlanetlabTap, self).do_release()
-
def wait_vif_name(self, exec_run_home = None):
""" Waits until the vif_name file for the command is generated,
and returns the vif_name for the device """
def gre_connect(self, remote_endpoint, connection_app_home,
connection_run_home):
- gre_connect_command = self._gre_connect_command(
- remote_endpoint, connection_run_home)
-
- # upload command to connect.sh script
- shfile = os.path.join(connection_app_home, "gre-connect.sh")
- self.node.upload_command(gre_connect_command,
- shfile = shfile,
- overwrite = False)
-
- # invoke connect script
- cmd = "bash %s" % shfile
- (out, err), proc = self.node.run(cmd, connection_run_home)
-
- # check if execution errors occurred
- msg = " Failed to connect endpoints "
-
- if proc.poll() or err:
- self.error(msg, out, err)
- raise RuntimeError, msg
-
- # Wait for pid file to be generated
- pid, ppid = self.node.wait_pid(connection_run_home)
-
- # If the process is not running, check for error information
- # on the remote machine
- if not pid or not ppid:
- (out, err), proc = self.node.check_errors(connection_run_home)
- # Out is what was written in the stderr file
- if err:
- msg = " Failed to start command '%s' " % command
- self.error(msg, out, err)
- raise RuntimeError, msg
-
- # After creating the TAP, the pl-vif-create.py script
+ super(PlanetlabTap, self).gre_connect(remote_endpoint,
+ connection_app_home, connection_run_home)
+ # After creating the TAP, the pl-vif-create.py script
# will write the name of the TAP to a file. We wait until
# we can read the interface name from the file.
vif_name = self.wait_vif_name(exec_run_home = connection_run_home)
return True
- def udp_connect(self, remote_endpoint, connection_app_home,
- connection_run_home, cipher, cipher_key, bwlimit, txqueuelen):
- udp_connect_command = self._udp_connect_command(
- remote_endpoint, connection_run_home,
- cipher, cipher_key, bwlimit, txqueuelen)
-
- # upload command to connect.sh script
- shfile = os.path.join(connection_app_home, "udp-connect.sh")
- self.node.upload_command(udp_connect_command,
- shfile = shfile,
- overwrite = False)
-
- # invoke connect script
- cmd = "bash %s" % shfile
- (out, err), proc = self.node.run(cmd, connection_run_home)
-
- # check if execution errors occurred
- msg = "Failed to connect endpoints "
-
- if proc.poll():
- self.error(msg, out, err)
- raise RuntimeError, msg
-
- # Wait for pid file to be generated
- pid, ppid = self.node.wait_pid(connection_run_home)
-
- # If the process is not running, check for error information
- # on the remote machine
- if not pid or not ppid:
- (out, err), proc = self.node.check_errors(connection_run_home)
- # Out is what was written in the stderr file
- if err:
- msg = " Failed to start command '%s' " % command
- self.error(msg, out, err)
- raise RuntimeError, msg
-
- return pid, ppid
-
- def _udp_connect_command(self, remote_endpoint, connection_run_home,
- cipher, cipher_key, bwlimit, txqueuelen):
-
- # Set the remote endpoint
- self.set("pointopoint", remote_endpoint.get("endpoint_ip"))
-
- remote_ip = remote_endpoint.node.get("ip")
-
- local_port_file = os.path.join(connection_run_home,
- "local_port")
-
- remote_port_file = os.path.join(connection_run_home,
- "remote_port")
-
- ret_file = os.path.join(connection_run_home,
- "ret_file")
-
- # Generate UDP connect command
- # Use pl-vif-up.py script to configure TAP with peer info
- vif_up_command = self._vif_up_command
-
- command = ["( "]
- command.append(vif_up_command)
-
- # Use pl-vid-udp-connect.py to stablish the tunnel between endpoints
- command.append(") & (")
- command.append("sudo -S")
- command.append("PYTHONPATH=$PYTHONPATH:${SRC}")
- command.append("python ${SRC}/pl-vif-udp-connect.py")
- command.append("-t %s" % self.vif_type)
- command.append("-S %s " % self.sock_name)
- command.append("-l %s " % local_port_file)
- command.append("-r %s " % remote_port_file)
- command.append("-H %s " % remote_ip)
- command.append("-R %s " % ret_file)
- if cipher:
- command.append("-c %s " % cipher)
- if cipher_key:
- command.append("-k %s " % cipher_key)
- if txqueuelen:
- command.append("-q %s " % txqueuelen)
- if bwlimit:
- command.append("-b %s " % bwlimit)
-
- command.append(")")
-
- command = " ".join(command)
- command = self.replace_paths(command)
-
- return command
-
- def _gre_connect_command(self, remote_endpoint, connection_run_home):
- # Set the remote endpoint
- self.set("pointopoint", remote_endpoint.get("endpoint_ip"))
+ def _gre_connect_command(self, remote_endpoint, connection_app_home,
+ connection_run_home):
+ # Set the remote endpoint, (private) IP of the device
+ self.set("pointopoint", remote_endpoint.get("ip"))
+ # Public IP of the node
self.set("greRemote", remote_endpoint.node.get("ip"))
# Generate GRE connect command
command = ["sudo -S python ${SRC}/pl-vif-create.py"]
command.append("-t %s" % self.vif_type)
- command.append("-a %s" % self.get("endpoint_ip"))
- command.append("-n %d" % self.get("endpoint_prefix"))
+ command.append("-a %s" % self.get("ip"))
+ command.append("-n %s" % self.get("prefix"))
command.append("-f %s " % self.vif_name_file)
command.append("-S %s " % self.sock_name)
command.append("-u %s" % self.node.get("username"))
command.append("-N %s" % device_name)
command.append("-t %s" % self.vif_type)
- command.append("-a %s" % self.get("endpoint_ip"))
- command.append("-n %d" % self.get("endpoint_prefix"))
+ command.append("-a %s" % self.get("ip"))
+ command.append("-n %s" % self.get("prefix"))
if self.get("snat") == True:
command.append("-s")
return " ".join(command)
- @property
- def vif_type(self):
- return "IFF_TAP"
-
@property
def vif_name_file(self):
return os.path.join(self.run_home, "vif_name")
- @property
- def sock_name(self):
- return os.path.join(self.run_home, "tap.sock")
-
- @property
- def _dependencies(self):
- return "mercurial make gcc"
-
@property
def _install(self):
# Install python-vsys and python-passfd
git://git.onelab.eu / nepi.git / blobdiff