Re: [Autotest] [KVM-AUTOTEST PATCH 11/14] KVM test: add kvm_monitor.py, an interface to QEMU monitors

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On Sun, Jun 13, 2010 at 05:33:42PM +0300, Michael Goldish wrote:
> This module should replace vm.send_monitor_cmd().  Instead of connecting to the
> monitor each time a command is issued, this module maintains a continuous
> connection to the monitor.  It disconnects when a test terminates and
> reconnects as soon as the next test begins (upon unpickling).
> 
> It currently contains only an interface to the human monitor.  A QMP interface
> will be introduced in a future patch.
> 
> Signed-off-by: Michael Goldish <mgoldish@xxxxxxxxxx>
> ---
>  client/tests/kvm/kvm_monitor.py |  356 +++++++++++++++++++++++++++++++++++++++
>  1 files changed, 356 insertions(+), 0 deletions(-)
>  create mode 100644 client/tests/kvm/kvm_monitor.py
> 
> diff --git a/client/tests/kvm/kvm_monitor.py b/client/tests/kvm/kvm_monitor.py
> new file mode 100644
> index 0000000..c5cf9c3
> --- /dev/null
> +++ b/client/tests/kvm/kvm_monitor.py
> @@ -0,0 +1,356 @@
> +"""
> +Interfaces to the QEMU monitor.
> +
> +@copyright: 2008-2010 Red Hat Inc.
> +"""
> +

...

> +class HumanMonitor(Monitor):
> +    """
> +    Wraps "human monitor" commands.
> +    """
> +
> +    def __init__(self, filename, suppress_exceptions=False):
> +        """
> +        Connect to the monitor socket and find the (qemu) prompt.
> +
> +        @param filename: Monitor socket filename
> +        @raise MonitorConnectError: Raised if the connection fails and
> +                suppress_exceptions is False
> +        @raise MonitorProtocolError: Raised if the initial (qemu) prompt isn't
> +                found and suppress_exceptions is False
> +        """
> +        try:
> +            Monitor.__init__(self, filename)
> +
> +            self.protocol = "human"
> +
> +            # Find the initial (qemu) prompt
> +            s, o = self._read_up_to_qemu_prompt(20)
> +            if not s:
> +                raise MonitorProtocolError("Could not find (qemu) prompt "
> +                                           "after connecting to monitor. "
> +                                           "Output so far: %r" % o)
> +
> +            # Save the output of 'help' for future use
> +            self.help = self._get_command_output("help")

Hi Michael,

Here, self.help is a string type.
But you repeatedly define a sub function self.help() below.

If I call vm.monitor.help() in testcase, will touch this err:
 TypeError: 'str' object is not callable

How about using self.help_str = self._get_command_output("help")?
and remove help sub function, Not only repeated name, but repeated function.


Amos

> +
> +        except MonitorError, e:
> +            if suppress_exceptions:
> +                logging.warn(e)
> +            else:
> +                raise
> +

...

> +
> +    def help(self):
> +        """
> +        Send "help" and return the output.
> +        """
> +        return self._get_command_output("help")

...
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