Synnefo » ./kamaki

# Copyright 2011-2012 GRNET S.A. All rights reserved.

#

# Redistribution and use in source and binary forms, with or

# without modification, are permitted provided that the following

# conditions are met:

#

#   1. Redistributions of source code must retain the above

#      copyright notice, this list of conditions and the following

#      disclaimer.

#

#   2. Redistributions in binary form must reproduce the above

#      copyright notice, this list of conditions and the following

#      disclaimer in the documentation and/or other materials

#      provided with the distribution.

#

# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

# POSSIBILITY OF SUCH DAMAGE.

#

# The views and conclusions contained in the software and

# documentation are those of the authors and should not be

# interpreted as representing official policies, either expressed

# or implied, of GRNET S.A.command

import logging

sendlog = logging.getLogger('clients.send')

recvlog = logging.getLogger('clients.recv')

class _command_init(object):

    def __init__(self, arguments={}):

        if hasattr(self, 'arguments'):

            arguments.update(self.arguments)

        self.arguments = dict(arguments)

        try:

            self.config = self['config']

            #self.config = self.get_argument('config')

        except KeyError:

            pass

    def _safe_progress_bar(self, msg, arg='progress_bar'):

        """Try to get a progress bar, but do not raise errors"""

        try:

            progress_bar = self.arguments[arg]

            gen = progress_bar.get_generator(msg)

        except Exception:

            return (None, None)

        return (progress_bar, gen)

    def _safe_progress_bar_finish(self, progress_bar):

        try:

            progress_bar.finish()

        except Exception:

            pass

    def __getitem__(self, argterm):

        """

        :param argterm: (str) the name/label of an argument in self.arguments

        :returns: the value of the corresponding Argument (not the argument

            object)

        :raises KeyError: if argterm not in self.arguments of this object

        """

        return self.arguments[argterm].value

    def __setitem__(self, argterm, arg):

        """Install an argument as argterm

        If argterm points to another argument, the other argument is lost

        :param argterm: (str)

        :param arg: (Argument)

        """

        if not hasattr(self, 'arguments'):

            self.arguments = {}

        self.arguments[argterm] = arg

    def get_argument_object(self, argterm):

        """

        :param argterm: (str) the name/label of an argument in self.arguments

        :returns: the arument object

        :raises KeyError: if argterm not in self.arguments of this object

        """

        return self.arguments[argterm]

    def get_argument(self, argterm):

        """

        :param argterm: (str) the name/label of an argument in self.arguments

        :returns: the value of the arument object

        :raises KeyError: if argterm not in self.arguments of this object

        """

        return self[argterm]