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Python Netlink library

Project description

Pyroute2 is a pure Python netlink and messaging/RPC library. It requires only Python stdlib, no 3rd party libraries. Later it can change, but the deps tree will remain as simple, as it is possible.

The library contains all you need to build either one-node, or distributed netlink-related solutions. It consists of two major parts:

  • Netlink parsers: NETLINK_ROUTE, TASKSTATS, etc.
  • Messaging infrastructure: broker, clients, etc.

RPC sample

Actually, either side can act as a server or a client, there is no pre-defined roles. But for simplicity, they’re referred here as “server” and “client”.

Server side:

from pyroute2.rpc import Node
from pyroute2.rpc import public


class Namespace(object):
    '''
    This class acts as a namespace, that contains
    methods to be published via RPC. Any method,
    available through RPC, must be marked as @public.
    '''

    @public
    def echo(self, msg):
        '''
        Simple echo method, that returns a modified
        string.
        '''
        return '%s passed' % (msg)

# start the RPC node and register the namespace
node = Node()
node.register(Namespace())

# listen for network connections
node.serve('tcp://localhost:9824')

# wait for exit -- activity will be done in the
# background thread
raw_input(' hit return to exit >> ')

Client side:

from pyroute2.rpc import Node

# start the RPC node and connect to the 'server'
node = Node()
proxy = node.connect('tcp://localhost:9824')

# call a remote method through the proxy instance
print(proxy.echo('test'))

It will print out test passed.

installation

make install or pip install pyroute2

requires

Python >= 2.6

  • test reqs (optional): python-coverage, python-nose

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