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#!/usr/bin/env python
#
# Copyright 2017 Ettus Research (National Instruments)
#
# 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/>.
#
"""
RPC shell to debug USRP MPM capable devices
"""
import sys
import cmd
import types
from mprpc import RPCClient
from mprpc.exceptions import RPCError
from usrp_mpm import types
from importlib import import_module
class RPCShell(cmd.Cmd):
prompt = "MPM> "
client = None
remote_methods = []
def rpc_template(self, command, args=None):
"""Template function to create new RPC shell commands"""
eval_preamble = "="
try:
if args:
if isinstance(args, list):
parsed_args = [
eval(a.lstrip(eval_preamble))
if a.startswith(eval_preamble) else a for a in args
]
response = self.client.call(command, parsed_args)
else:
response = self.client.call(
command,
eval(args.lstrip(eval_preamble))
if args.startswith(eval_preamble) else args)
else:
response = self.client.call(command)
except RPCError as e:
print("RPC Command failed!")
print("Error: {}".format(e))
return
if isinstance(response, bool):
if response:
print("Commend executed successfully!")
return
print("Command failed!")
return
print(response)
def do_connect(self, host, port=types.MPM_RPC_PORT):
"""connect to a remote RPC serverconnect <host> (port=MPM_RPC_PORT)"""
try:
self.client = RPCClient(host, port)
except:
print("Connection refused")
return
methods = self.client.call('list_methods')
for method in methods:
self.add_command(*method)
def do_disconnect(self, args):
"""disconnect from the RPC server"""
if self.client:
try:
self.client.close()
except RPCError as e:
print("Error while closing the connection")
print("Error: {}".format(e))
for method in self.remote_methods:
delattr(self, "do_" + method)
self.remote_methods = []
self.client = None
def do_import(self, args):
"""import a python module into the global namespace"""
globals()[args] = import_module(args)
def do_EOF(self, args):
exit(0)
def add_command(self, command, docs):
def new_command(args): self.rpc_template(str(command), args)
new_command.__doc__ = docs
setattr(self, "do_" + command, new_command)
self.remote_methods.append(command)
def run(self):
try:
self.cmdloop()
except KeyboardInterrupt:
self.do_disconnect(None)
exit(0)
def get_names(self):
return dir(self)
if __name__ == "__main__":
my_shell = RPCShell()
exit(not (my_shell.run()))
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