Attachment 853068 Details for Bug 1054640 – script to repeatedly hot plug/unplug virtio-net-nic

script to repeatedly hot plug/unplug virtio-net-nic

qmpvf-net.py (text/x-python), 4.04 KB, created by Chao Yang on 2014-01-21 09:57:42 UTC

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Creator: Chao Yang

Created: 2014-01-21 09:57:42 UTC

Size: 4.04 KB

patch

obsolete

># QEMU Monitor Protocol Python class
>#
># Copyright (C) 2009 Red Hat Inc.
>#
># Authors:
>#  Luiz Capitulino <lcapitulino@redhat.com>
>#
># Change Log:
># Yang Feng <fyang@redhat.com>
># Add support for tcp protocol.
># Add read() function.
>#
>#
># This work is licensed under the terms of the GNU GPL, version 2.  See
># the COPYING file in the top-level directory.
>
>import socket, json, time, commands
>from optparse import OptionParser
>
>class QMPError(Exception):
>    pass
>
>class QMPConnectError(QMPError):
>    pass
>
>class QEMUMonitorProtocol:
>    def connect(self):
>        self.sock.connect(self.filename)
>        data = self.__json_read()
>        if data == None:
>            raise QMPConnectError
>        if not data.has_key('QMP'):
>            raise QMPConnectError
>        return data['QMP']['capabilities']
>
>    def close(self):
>        self.sock.close()
>
>    def send_raw(self, line):
>        self.sock.send(str(line))
>        return self.__json_read()
>
>    def send(self, cmdline, timeout=30):
>        end_time = time.time() + timeout
>        cmd = self.__build_cmd(cmdline)
>        print cmd
>        self.__json_send(cmd)
>        while time.time() < end_time:
>            resp = self.__json_read()
>            if resp == None:
>                return (False, None)
>            elif resp.has_key('error'):
>                return (False, resp['error'])
>            elif resp.has_key('return'):
>                return (True, resp['return'])
>
>
>    def read(self, timeout=30):
>        o = ""
>        end_time = time.time() + timeout
>        while time.time() < end_time:
>            try:
>                o += self.sock.recv(1024)
>                if len(o) > 0:
>                    break
>            except:
>                time.sleep(0.01)
>        if len(o) > 0:
>            return json.loads(o)
>        else:
>            return None
>
>    def __build_cmd(self, cmdline):
>        cmdargs = cmdline.split()
>        qmpcmd = { 'execute': cmdargs[0], 'arguments': {} }
>        for arg in cmdargs[1:]:
>            opt = arg.split('=')
>            try:
>                value = int(opt[1])
>            except ValueError:
>                value = opt[1]
>            qmpcmd['arguments'][opt[0]] = value
>        return qmpcmd
>
>    def __json_send(self, cmd):
>        # XXX: We have to send any additional char, otherwise
>        # the Server won't read our input
>        self.sock.send(json.dumps(cmd) + ' ')
>
>    def __json_read(self):
>        try:
>            return json.loads(self.sock.recv(1024))
>        except ValueError:
>            return
>
>    def __init__(self, filename, protocol="tcp"):
>        if protocol == "tcp":
>            self.filename = ("localhost", int(filename))
>            self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
>        elif protocol == "unix":
>            self.filename = filename
>            print self.filename
>            self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
>        #self.sock.setblocking(0)
>        self.sock.settimeout(5)
>
>if __name__ == "__main__":
>    parser = OptionParser()
>    parser.add_option('-n', '--num', dest='num', default='10', help='Times want to try')
>    parser.add_option('-f', '--file', dest='port', default='8000', help='QMP port/filename')
>    parser.add_option('-p', '--protocol', dest='protocol',default='tcp', help='QMP protocol')
>    def usage():
>        parser.print_help()
>        sys.exit(1)
>
>    options, args = parser.parse_args()
>
>    print options
>    if len(args) > 0:
>        usage()
>
>    num = int(options.num)
>    qmp_filename = options.port
>    qmp_protocol = options.protocol
>    qmp_socket = QEMUMonitorProtocol(qmp_filename,qmp_protocol)
>    qmp_socket.connect()
>    qmp_socket.send("qmp_capabilities")
>    for i in range(num):
>       	print "It is the %d-th times loop" %(i)
>	cmd = "netdev_add type=tap id=netdev1 vhost=on"
>        qmp_socket.send(cmd)
>        time.sleep(5)
>        cmd = "device_add driver=virtio-net-pci netdev=netdev1 id=hostnet2 mac=46:56:78:23:23:44"
>        qmp_socket.send(cmd)
>        time.sleep(5)
>        cmd = "device_del id=hostnet2"
>        qmp_socket.send(cmd)
>        time.sleep(5)
>    qmp_socket.close()
>

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Attachments on bug 1054640: 851443 | 852598 | 853068