import SocketServer as socketserver
import threading
import socket
from CordContainer import Onos, Quagga
from nose.tools import nottest

##Server to handle container restart requests from test container.
##Used now to restart ONOS from vrouter test container

CORD_TEST_HOST = '172.17.0.1'
CORD_TEST_PORT = 25000

class CordTestServer(socketserver.BaseRequestHandler):

    def restart_onos(self, args):
        print('Restarting ONOS')
        onos = Onos(restart = True)
        self.request.sendall('DONE')

    def restart_quagga(self, args):
        if args is None:
            args = Quagga.quagga_config_file
        print('Restarting QUAGGA with config file %s'%args)
        quagga = Quagga(restart = True, config_file = args)
        self.request.sendall('DONE')

    callback_table = { 'RESTART_ONOS' : restart_onos,
                       'RESTART_QUAGGA' : restart_quagga,
                     }

    def handle(self):
        data = self.request.recv(1024).strip()
        cmd = data.split()[0]
        try:
            args = ' '.join(data.split()[1:])
        except:
            args = None

        if self.callback_table.has_key(cmd):
            self.callback_table[cmd](self, args)

class ThreadedTestServer(socketserver.ThreadingMixIn, socketserver.TCPServer):
    allow_reuse_address = True

@nottest
def cord_test_server_start():
    server = ThreadedTestServer( (CORD_TEST_HOST, CORD_TEST_PORT), CordTestServer)
    task = threading.Thread(target = server.serve_forever)
    ##terminate when main thread exits
    task.daemon = True
    task.start()
    return server

@nottest
def cord_test_server_stop(server):
    server.shutdown()
    server.server_close()

@nottest
def cord_test_onos_restart():
    '''Send ONOS restart to server'''
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.connect( (CORD_TEST_HOST, CORD_TEST_PORT) )
    s.sendall('RESTART_ONOS\n')
    data = s.recv(1024).strip()
    s.close()
    if data == 'DONE':
        return True
    return False

@nottest
def cord_test_quagga_restart(config_file = None):
    '''Send QUAGGA restart to server'''
    if config_file is None:
        config_file = Quagga.quagga_config_file
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.connect( (CORD_TEST_HOST, CORD_TEST_PORT) )
    s.sendall('RESTART_QUAGGA {}\n'.format(config_file))
    data = s.recv(1024).strip()
    s.close()
    if data == 'DONE':
        return True
    return False