"""The remote.exporter module exports resources to the coordinator and makes
them available to other clients on the same coordinator"""
import argparse
import asyncio
import logging
import sys
import os
import os.path
import time
import traceback
import shutil
import subprocess
import warnings
from pathlib import Path
from typing import Dict, Type
from socket import gethostname, getfqdn
import attr
from autobahn.asyncio.wamp import ApplicationRunner, ApplicationSession
from .config import ResourceConfig
from .common import ResourceEntry, enable_tcp_nodelay
from ..util import get_free_port, labgrid_version
__version__ = labgrid_version()
exports: Dict[str, Type[ResourceEntry]] = {}
reexec = False
[docs]class ExporterError(Exception):
pass
[docs]class BrokenResourceError(ExporterError):
pass
[docs]def log_subprocess_kernel_stack(logger, child):
if child.poll() is not None: # nothing to check if no longer running
return
try:
with open(f'/proc/{child.pid}/stack', 'r') as f:
stack = f.read()
stack = stack.strip()
except PermissionError:
return
logger.info("current kernel stack of %s is:\n%s", child.args, stack)
[docs]@attr.s(eq=False)
class ResourceExport(ResourceEntry):
"""Represents a local resource exported via a specific protocol.
The ResourceEntry attributes contain the information for the client.
"""
host = attr.ib(default=gethostname(), validator=attr.validators.instance_of(str))
proxy = attr.ib(default=None)
proxy_required = attr.ib(default=False)
local = attr.ib(init=False)
local_params = attr.ib(init=False)
start_params = attr.ib(init=False)
[docs] def __attrs_post_init__(self):
super().__attrs_post_init__()
self.logger = logging.getLogger(f"ResourceExport({self.cls})")
# move the params to local_params
self.local_params = self.params.copy()
for key in self.local_params:
del self.params[key]
self.start_params = None
self._broken = None
# if something criticial failed for an export, we can mark it as
# permanently broken
@property
def broken(self):
return self._broken
@broken.setter
def broken(self, reason):
assert self._broken is None
assert type(reason) == str
assert reason
self._broken = reason
# By setting the acquired field, we block places from using this
# resource. For now, when trying to acquire a place with a match for
# this resource, we get 'resource is already in used by <broken>',
# instead of an unspecific error.
self.data['acquired'] = '<broken>'
self.logger.error("marked as broken: %s", reason)
def _get_start_params(self): # pylint: disable=no-self-use
return {}
def _get_params(self): # pylint: disable=no-self-use
return {}
def _start(self, start_params):
"""Start exporting the local resource"""
pass
def _stop(self, start_params):
"""Stop exporting the local resource"""
pass
[docs] def start(self):
assert not self.broken
start_params = self._get_start_params()
try:
self._start(start_params)
except Exception:
self.broken = "start failed"
self.logger.exception("failed to start with %s", start_params)
raise
self.start_params = start_params
[docs] def stop(self):
assert not self.broken
try:
self._stop(self.start_params)
except Exception:
self.broken = "stop failed"
self.logger.exception("failed to stop with %s", self.start_params)
raise
self.start_params = None
[docs] def poll(self):
# poll and check for updated params/avail
self.local.poll()
if self.broken:
pass # don't touch broken resources
elif self.local.avail and self.acquired:
start_params = self._get_start_params()
if self.start_params is None:
self.start()
elif self.start_params != start_params:
self.logger.info("restart needed (%s -> %s)", self.start_params, start_params)
self.stop()
self.start()
else:
if self.start_params is not None:
self.stop()
# check if resulting information has changed
dirty = False
if self.avail != (self.local.avail and not self.broken):
self.data['avail'] = self.local.avail and not self.broken
dirty = True
params = self._get_params()
if not params.get('extra'):
params['extra'] = {}
params['extra']['proxy_required'] = self.proxy_required
params['extra']['proxy'] = self.proxy
if self.broken:
params['extra']['broken'] = self.broken
if self.params != params:
self.data['params'].update(params)
dirty = True
return dirty
[docs] def acquire(self, *args, **kwargs):
if self.broken:
raise BrokenResourceError(f"cannot acquire broken resource (original reason): {self.broken}")
super().acquire(*args, **kwargs)
self.poll()
[docs] def release(self, *args, **kwargs):
if self.broken:
raise BrokenResourceError(f"cannot release broken resource (original reason): {self.broken}")
super().release(*args, **kwargs)
self.poll()
[docs]@attr.s(eq=False)
class SerialPortExport(ResourceExport):
"""ResourceExport for a USB or Raw SerialPort"""
[docs] def __attrs_post_init__(self):
super().__attrs_post_init__()
if self.cls == "RawSerialPort":
from ..resource.serialport import RawSerialPort
self.local = RawSerialPort(target=None, name=None, **self.local_params)
elif self.cls == "USBSerialPort":
from ..resource.udev import USBSerialPort
self.local = USBSerialPort(target=None, name=None, **self.local_params)
self.data['cls'] = "NetworkSerialPort"
self.child = None
self.port = None
self.ser2net_bin = shutil.which("ser2net")
if self.ser2net_bin is None:
if os.path.isfile("/usr/sbin/ser2net"):
self.ser2net_bin = "/usr/sbin/ser2net"
if self.ser2net_bin is None:
warnings.warn("ser2net binary not found, falling back to /usr/bin/ser2net")
self.ser2net_bin = "/usr/bin/ser2net"
[docs] def __del__(self):
if self.child is not None:
self.stop()
def _get_start_params(self):
return {
'path': self.local.port,
}
def _get_params(self):
"""Helper function to return parameters"""
return {
'host': self.host,
'port': self.port,
'speed': self.local.speed,
'extra': {
'path': self.local.port,
}
}
def _start(self, start_params):
"""Start ``ser2net`` subprocess"""
assert self.local.avail
assert self.child is None
assert start_params['path'].startswith('/dev/')
self.port = get_free_port()
# Ser2net has switched to using YAML format at version 4.0.0.
_, _, version = str(subprocess.check_output([self.ser2net_bin,'-v'])).split(' ')
major_version = version.split('.')[0]
if int(major_version) >= 4:
cmd = [
self.ser2net_bin,
'-d',
'-n',
'-Y', f'connection: &con01# accepter: telnet(rfc2217,mode=server),{self.port}',
'-Y', f' connector: serialdev(nouucplock=true),{start_params["path"]},{self.local.speed}n81,local', # pylint: disable=line-too-long
'-Y', ' options:',
'-Y', ' max-connections: 10',
]
else:
cmd = [
self.ser2net_bin,
'-d',
'-n',
'-u',
'-C',
f'{self.port}:telnet:0:{start_params["path"]}:{self.local.speed} NONE 8DATABITS 1STOPBIT LOCAL', # pylint: disable=line-too-long
]
self.logger.info("Starting ser2net with: %s", " ".join(cmd))
self.child = subprocess.Popen(cmd)
try:
self.child.wait(timeout=0.5)
raise ExporterError(f"ser2net for {start_params['path']} exited immediately")
except subprocess.TimeoutExpired:
# good, ser2net didn't exit immediately
pass
self.logger.info("started ser2net for %s on port %d", start_params['path'], self.port)
def _stop(self, start_params):
"""Stop ``ser2net`` subprocess"""
assert self.child
child = self.child
self.child = None
port = self.port
self.port = None
child.terminate()
try:
child.wait(2.0) # ser2net takes about a second to react
except subprocess.TimeoutExpired:
self.logger.warning("ser2net for %s still running after SIGTERM", start_params['path'])
log_subprocess_kernel_stack(self.logger, child)
child.kill()
child.wait(1.0)
self.logger.info("stopped ser2net for %s on port %d", start_params['path'], port)
exports["USBSerialPort"] = SerialPortExport
exports["RawSerialPort"] = SerialPortExport
[docs]@attr.s(eq=False)
class NetworkInterfaceExport(ResourceExport):
"""ResourceExport for a network interface"""
[docs] def __attrs_post_init__(self):
super().__attrs_post_init__()
if self.cls == "NetworkInterface":
from ..resource.base import NetworkInterface
self.local = NetworkInterface(target=None, name=None, **self.local_params)
elif self.cls == "USBNetworkInterface":
from ..resource.udev import USBNetworkInterface
self.local = USBNetworkInterface(target=None, name=None, **self.local_params)
self.data['cls'] = "RemoteNetworkInterface"
def _get_params(self):
"""Helper function to return parameters"""
params = {
'host': self.host,
'ifname': self.local.ifname,
}
if self.cls == "USBNetworkInterface":
params['extra'] = {
'state': self.local.if_state,
}
return params
exports["USBNetworkInterface"] = NetworkInterfaceExport
exports["NetworkInterface"] = NetworkInterfaceExport
[docs]@attr.s(eq=False)
class USBGenericExport(ResourceExport):
"""ResourceExport for USB devices accessed directly from userspace"""
[docs] def __attrs_post_init__(self):
super().__attrs_post_init__()
local_cls_name = self.cls
self.data['cls'] = f"Network{self.cls}"
from ..resource import udev
local_cls = getattr(udev, local_cls_name)
self.local = local_cls(target=None, name=None, **self.local_params)
def _get_params(self):
"""Helper function to return parameters"""
return {
'host': self.host,
'busnum': self.local.busnum,
'devnum': self.local.devnum,
'path': self.local.path,
'vendor_id': self.local.vendor_id,
'model_id': self.local.model_id,
}
[docs]@attr.s(eq=False)
class USBSigrokExport(USBGenericExport):
"""ResourceExport for USB devices accessed directly from userspace"""
[docs] def __attrs_post_init__(self):
super().__attrs_post_init__()
def _get_params(self):
"""Helper function to return parameters"""
return {
'host': self.host,
'busnum': self.local.busnum,
'devnum': self.local.devnum,
'path': self.local.path,
'vendor_id': self.local.vendor_id,
'model_id': self.local.model_id,
'driver': self.local.driver,
'channels': self.local.channels
}
[docs]@attr.s(eq=False)
class USBSDMuxExport(USBGenericExport):
"""ResourceExport for USB devices accessed directly from userspace"""
[docs] def __attrs_post_init__(self):
super().__attrs_post_init__()
def _get_params(self):
"""Helper function to return parameters"""
return {
'host': self.host,
'busnum': self.local.busnum,
'devnum': self.local.devnum,
'path': self.local.path,
'vendor_id': self.local.vendor_id,
'model_id': self.local.model_id,
'control_path': self.local.control_path,
}
[docs]@attr.s(eq=False)
class USBSDWireExport(USBGenericExport):
"""ResourceExport for USB devices accessed directly from userspace"""
[docs] def __attrs_post_init__(self):
super().__attrs_post_init__()
def _get_params(self):
"""Helper function to return parameters"""
return {
'host': self.host,
'busnum': self.local.busnum,
'devnum': self.local.devnum,
'path': self.local.path,
'vendor_id': self.local.vendor_id,
'model_id': self.local.model_id,
'control_serial': self.local.control_serial,
}
[docs]@attr.s(eq=False)
class SiSPMPowerPortExport(USBGenericExport):
"""ResourceExport for ports on GEMBRID switches"""
[docs] def __attrs_post_init__(self):
super().__attrs_post_init__()
def _get_params(self):
"""Helper function to return parameters"""
return {
'host': self.host,
'busnum': self.local.busnum,
'devnum': self.local.devnum,
'path': self.local.path,
'vendor_id': self.local.vendor_id,
'model_id': self.local.model_id,
'index': self.local.index,
}
[docs]@attr.s(eq=False)
class USBPowerPortExport(USBGenericExport):
"""ResourceExport for ports on switchable USB hubs"""
[docs] def __attrs_post_init__(self):
super().__attrs_post_init__()
def _get_params(self):
"""Helper function to return parameters"""
return {
'host': self.host,
'busnum': self.local.busnum,
'devnum': self.local.devnum,
'path': self.local.path,
'vendor_id': self.local.vendor_id,
'model_id': self.local.model_id,
'index': self.local.index,
}
[docs]@attr.s(eq=False)
class USBDeditecRelaisExport(USBGenericExport):
"""ResourceExport for outputs on deditec relais"""
[docs] def __attrs_post_init__(self):
super().__attrs_post_init__()
def _get_params(self):
"""Helper function to return parameters"""
return {
'host': self.host,
'busnum': self.local.busnum,
'devnum': self.local.devnum,
'path': self.local.path,
'vendor_id': self.local.vendor_id,
'model_id': self.local.model_id,
'index': self.local.index,
}
[docs]@attr.s(eq=False)
class USBHIDRelayExport(USBGenericExport):
"""ResourceExport for outputs on simple USB HID relays"""
[docs] def __attrs_post_init__(self):
super().__attrs_post_init__()
def _get_params(self):
"""Helper function to return parameters"""
return {
'host': self.host,
'busnum': self.local.busnum,
'devnum': self.local.devnum,
'path': self.local.path,
'vendor_id': self.local.vendor_id,
'model_id': self.local.model_id,
'index': self.local.index,
}
[docs]@attr.s(eq=False)
class USBFlashableExport(USBGenericExport):
"""ResourceExport for Flashable USB devices"""
[docs] def __attrs_post_init__(self):
super().__attrs_post_init__()
def _get_params(self):
p = super()._get_params()
p['devnode'] = self.local.devnode
return p
[docs]@attr.s(eq=False)
class USBGenericRemoteExport(USBGenericExport):
[docs] def __attrs_post_init__(self):
super().__attrs_post_init__()
self.data['cls'] = f"Remote{self.cls}".replace("Network", "")
exports["AndroidFastboot"] = USBGenericExport
exports["AndroidUSBFastboot"] = USBGenericRemoteExport
exports["DFUDevice"] = USBGenericExport
exports["IMXUSBLoader"] = USBGenericExport
exports["MXSUSBLoader"] = USBGenericExport
exports["RKUSBLoader"] = USBGenericExport
exports["AlteraUSBBlaster"] = USBGenericExport
exports["SigrokUSBDevice"] = USBSigrokExport
exports["SigrokUSBSerialDevice"] = USBSigrokExport
exports["USBSDMuxDevice"] = USBSDMuxExport
exports["USBSDWireDevice"] = USBSDWireExport
exports["USBDebugger"] = USBGenericExport
exports["USBMassStorage"] = USBGenericExport
exports["USBVideo"] = USBGenericExport
exports["USBAudioInput"] = USBAudioInputExport
exports["USBTMC"] = USBGenericExport
exports["SiSPMPowerPort"] = SiSPMPowerPortExport
exports["USBPowerPort"] = USBPowerPortExport
exports["DeditecRelais8"] = USBDeditecRelaisExport
exports["HIDRelay"] = USBHIDRelayExport
exports["USBFlashableDevice"] = USBFlashableExport
exports["LXAUSBMux"] = USBGenericExport
[docs]@attr.s(eq=False)
class ProviderGenericExport(ResourceExport):
"""ResourceExport for Resources derived from BaseProvider"""
[docs] def __attrs_post_init__(self):
super().__attrs_post_init__()
local_cls_name = self.cls
self.data['cls'] = f"Remote{self.cls}"
from ..resource import provider
local_cls = getattr(provider, local_cls_name)
self.local = local_cls(target=None, name=None, **self.local_params)
def _get_params(self):
"""Helper function to return parameters"""
return {
'host': self.host,
'internal': self.local.internal,
'external': self.local.external,
}
exports["TFTPProvider"] = ProviderGenericExport
exports["NFSProvider"] = ProviderGenericExport
exports["HTTPProvider"] = ProviderGenericExport
[docs]@attr.s
class EthernetPortExport(ResourceExport):
"""ResourceExport for a ethernet interface"""
[docs] def __attrs_post_init__(self):
super().__attrs_post_init__()
from ..resource.ethernetport import SNMPEthernetPort
self.data['cls'] = "EthernetPort"
self.local = SNMPEthernetPort(target=None, name=None, **self.local_params)
def _get_params(self):
"""Helper function to return parameters"""
return {
'switch': self.local.switch,
'interface': self.local.interface,
'extra': self.local.extra
}
exports["SNMPEthernetPort"] = EthernetPortExport
[docs]@attr.s(eq=False)
class GPIOSysFSExport(ResourceExport):
_gpio_sysfs_path_prefix = '/sys/class/gpio'
"""ResourceExport for GPIO lines accessed directly from userspace"""
[docs] def __attrs_post_init__(self):
super().__attrs_post_init__()
local_cls_name = self.cls
self.data['cls'] = f"Network{self.cls}"
from ..resource import base
local_cls = getattr(base, local_cls_name)
self.local = local_cls(target=None, name=None, **self.local_params)
self.export_path = Path(GPIOSysFSExport._gpio_sysfs_path_prefix,
f'gpio{self.local.index}')
self.system_exported = False
def _get_params(self):
"""Helper function to return parameters"""
return {
'host': self.host,
'index': self.local.index,
}
def _get_start_params(self):
return {
'index': self.local.index,
}
def _start(self, start_params):
"""Start a GPIO export to userspace"""
index = start_params['index']
if self.export_path.exists():
self.system_exported = True
return
export_sysfs_path = os.path.join(GPIOSysFSExport._gpio_sysfs_path_prefix, 'export')
with open(export_sysfs_path, mode='wb') as export:
export.write(str(index).encode('utf-8'))
def _stop(self, start_params):
"""Disable a GPIO export to userspace"""
index = start_params['index']
if self.system_exported:
return
export_sysfs_path = os.path.join(GPIOSysFSExport._gpio_sysfs_path_prefix, 'unexport')
with open(export_sysfs_path, mode='wb') as unexport:
unexport.write(str(index).encode('utf-8'))
exports["SysfsGPIO"] = GPIOSysFSExport
[docs]@attr.s
class NetworkServiceExport(ResourceExport):
"""ResourceExport for a NetworkService
This checks if the address has a interface suffix and then provides the
neccessary proxy information.
"""
[docs] def __attrs_post_init__(self):
super().__attrs_post_init__()
from ..resource.networkservice import NetworkService
self.data['cls'] = "NetworkService"
self.local = NetworkService(target=None, name=None, **self.local_params)
if '%' in self.local_params['address']:
self.proxy_required = True
def _get_params(self):
"""Helper function to return parameters"""
return {
**self.local_params,
}
exports["NetworkService"] = NetworkServiceExport
[docs]@attr.s
class HTTPVideoStreamExport(ResourceExport):
"""ResourceExport for an HTTPVideoStream"""
[docs] def __attrs_post_init__(self):
super().__attrs_post_init__()
from ..resource.httpvideostream import HTTPVideoStream
self.data['cls'] = "HTTPVideoStream"
self.local = HTTPVideoStream(target=None, name=None, **self.local_params)
def _get_params(self):
return self.local_params
exports["HTTPVideoStream"] = HTTPVideoStreamExport
[docs]@attr.s(eq=False)
class LXAIOBusNodeExport(ResourceExport):
"""ResourceExport for LXAIOBusNode devices accessed via the HTTP API"""
[docs] def __attrs_post_init__(self):
super().__attrs_post_init__()
local_cls_name = self.cls
self.data['cls'] = f"Network{self.cls}"
from ..resource import lxaiobus
local_cls = getattr(lxaiobus, local_cls_name)
self.local = local_cls(target=None, name=None, **self.local_params)
def _get_params(self):
return self.local_params
exports["LXAIOBusPIO"] = LXAIOBusNodeExport
[docs]@attr.s(eq=False)
class AndroidNetFastbootExport(ResourceExport):
[docs] def __attrs_post_init__(self):
super().__attrs_post_init__()
local_cls_name = self.cls
self.data['cls'] = f"Remote{self.cls}"
from ..resource import fastboot
local_cls = getattr(fastboot, local_cls_name)
self.local = local_cls(target=None, name=None, **self.local_params)
def _get_params(self):
"""Helper function to return parameters"""
return {'host' : self.host, **self.local_params}
exports["AndroidNetFastboot"] = AndroidNetFastbootExport
class ExporterSession(ApplicationSession):
def onConnect(self):
"""Set up internal datastructures on successful connection:
- Setup loop, name, authid and address
- Join the coordinator as an exporter"""
self.loop = self.config.extra['loop']
self.name = self.config.extra['name']
self.hostname = self.config.extra['hostname']
self.isolated = self.config.extra['isolated']
self.address = self._transport.transport.get_extra_info('sockname')[0]
self.checkpoint = time.monotonic()
self.poll_task = None
self.groups = {}
enable_tcp_nodelay(self)
self.join(
self.config.realm,
authmethods=["anonymous", "ticket"],
authid=f"exporter/{self.name}",
authextra={"authid": f"exporter/{self.name}"},
)
def onChallenge(self, challenge):
"""Function invoked on received challege, returns just a dummy ticket
at the moment, authentication is not supported yet"""
logging.warning("Ticket authentication is deprecated. Please update your coordinator.")
return "dummy-ticket"
async def onJoin(self, details):
"""On successful join:
- export available resources
- bail out if we are unsuccessful
"""
print(details)
prefix = f'org.labgrid.exporter.{self.name}'
try:
await self.register(self.acquire, f'{prefix}.acquire')
await self.register(self.release, f'{prefix}.release')
await self.register(self.version, f'{prefix}.version')
config_template_env = {
'env': os.environ,
'isolated': self.isolated,
'hostname': self.hostname,
'name': self.name,
}
resource_config = ResourceConfig(
self.config.extra['resources'], config_template_env
)
for group_name, group in resource_config.data.items():
group_name = str(group_name)
for resource_name, params in group.items():
resource_name = str(resource_name)
if resource_name == 'location':
continue
if params is None:
continue
cls = params.pop('cls', resource_name)
# this may call back to acquire the resource immediately
await self.add_resource(
group_name, resource_name, cls, params
)
self.checkpoint = time.monotonic()
except Exception: # pylint: disable=broad-except
traceback.print_exc(file=sys.stderr)
self.loop.stop()
return
self.poll_task = self.loop.create_task(self.poll())
async def onLeave(self, details):
"""Cleanup after leaving the coordinator connection"""
if self.poll_task:
self.poll_task.cancel()
await asyncio.wait([self.poll_task])
super().onLeave(details)
async def onDisconnect(self):
print("connection lost", file=sys.stderr)
global reexec
reexec = True
if self.poll_task:
self.poll_task.cancel()
await asyncio.wait([self.poll_task])
await asyncio.sleep(0.5) # give others a chance to clean up
self.loop.stop()
async def acquire(self, group_name, resource_name, place_name):
resource = self.groups[group_name][resource_name]
try:
resource.acquire(place_name)
finally:
await self.update_resource(group_name, resource_name)
async def release(self, group_name, resource_name):
resource = self.groups[group_name][resource_name]
try:
resource.release()
finally:
await self.update_resource(group_name, resource_name)
async def version(self):
self.checkpoint = time.monotonic()
return __version__
async def _poll_step(self):
for group_name, group in self.groups.items():
for resource_name, resource in group.items():
if not isinstance(resource, ResourceExport):
continue
try:
changed = resource.poll()
except Exception: # pylint: disable=broad-except
print(f"Exception while polling {resource}", file=sys.stderr)
traceback.print_exc(file=sys.stderr)
continue
if changed:
await self.update_resource(group_name, resource_name)
else:
# let other tasks run, see https://github.com/python/asyncio/issues/284
await asyncio.sleep(0)
async def poll(self):
while True:
try:
await asyncio.sleep(0.25)
await self._poll_step()
except asyncio.CancelledError:
break
except Exception: # pylint: disable=broad-except
traceback.print_exc(file=sys.stderr)
age = time.monotonic() - self.checkpoint
if age > 300:
print(f"missed checkpoint, exiting (last was {age} seconds ago)", file=sys.stderr)
self.disconnect()
async def add_resource(self, group_name, resource_name, cls, params):
"""Add a resource to the exporter and update status on the coordinator"""
print(
f"add resource {group_name}/{resource_name}: {cls}/{params}"
)
group = self.groups.setdefault(group_name, {})
assert resource_name not in group
export_cls = exports.get(cls, ResourceEntry)
config = {
'avail': export_cls is ResourceEntry,
'cls': cls,
'params': params,
}
proxy_req = self.isolated
if issubclass(export_cls, ResourceExport):
group[resource_name] = export_cls(config, host=self.hostname, proxy=getfqdn(),
proxy_required=proxy_req)
else:
config['params']['extra'] = {
'proxy': getfqdn(),
'proxy_required': proxy_req,
}
group[resource_name] = export_cls(config)
await self.update_resource(group_name, resource_name)
async def update_resource(self, group_name, resource_name):
"""Update status on the coordinator"""
resource = self.groups[group_name][resource_name]
data = resource.asdict()
print(data)
await self.call(
'org.labgrid.coordinator.set_resource', group_name, resource_name,
data
)
[docs]def main():
parser = argparse.ArgumentParser()
parser.add_argument(
'-x',
'--crossbar',
metavar='URL',
type=str,
default=os.environ.get("LG_CROSSBAR", "ws://127.0.0.1:20408/ws"),
help="crossbar websocket URL"
)
parser.add_argument(
'-n',
'--name',
dest='name',
type=str,
default=None,
help='public name of this exporter (defaults to the system hostname)'
)
parser.add_argument(
'--hostname',
dest='hostname',
type=str,
default=None,
help='hostname (or IP) published for accessing resources (defaults to the system hostname)'
)
parser.add_argument(
'-d',
'--debug',
action='store_true',
default=False,
help="enable debug mode"
)
parser.add_argument(
'-i',
'--isolated',
action='store_true',
default=False,
help="enable isolated mode (always request SSH forwards)"
)
parser.add_argument(
'resources',
metavar='RESOURCES',
type=str,
help='resource config file name'
)
args = parser.parse_args()
level = 'debug' if args.debug else 'info'
extra = {
'name': args.name or gethostname(),
'hostname': args.hostname or gethostname(),
'resources': args.resources,
'isolated': args.isolated
}
crossbar_url = args.crossbar
crossbar_realm = os.environ.get("LG_CROSSBAR_REALM", "realm1")
print(f"crossbar URL: {crossbar_url}")
print(f"crossbar realm: {crossbar_realm}")
print(f"exporter name: {extra['name']}")
print(f"exporter hostname: {extra['hostname']}")
print(f"resource config file: {extra['resources']}")
extra['loop'] = loop = asyncio.get_event_loop()
if args.debug:
loop.set_debug(True)
runner = ApplicationRunner(url=crossbar_url, realm=crossbar_realm, extra=extra)
runner.run(ExporterSession, log_level=level)
if reexec:
exit(100)
if __name__ == "__main__":
main()