File: keypair.py

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#   Copyright 2013 OpenStack Foundation
#
#   Licensed under the Apache License, Version 2.0 (the "License"); you may
#   not use this file except in compliance with the License. You may obtain
#   a copy of the License at
#
#        http://www.apache.org/licenses/LICENSE-2.0
#
#   Unless required by applicable law or agreed to in writing, software
#   distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#   WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#   License for the specific language governing permissions and limitations
#   under the License.
#

"""Keypair action implementations"""

import os
import six
import sys

from openstackclient.common import command
from openstackclient.common import exceptions
from openstackclient.common import utils


class CreateKeypair(command.ShowOne):
    """Create new public key"""

    def get_parser(self, prog_name):
        parser = super(CreateKeypair, self).get_parser(prog_name)
        parser.add_argument(
            'name',
            metavar='<name>',
            help='New public key name',
        )
        parser.add_argument(
            '--public-key',
            metavar='<file>',
            help='Filename for public key to add',
        )
        return parser

    def take_action(self, parsed_args):
        compute_client = self.app.client_manager.compute

        public_key = parsed_args.public_key
        if public_key:
            try:
                with open(os.path.expanduser(parsed_args.public_key)) as p:
                    public_key = p.read()
            except IOError as e:
                msg = "Key file %s not found: %s"
                raise exceptions.CommandError(msg
                                              % (parsed_args.public_key, e))

        keypair = compute_client.keypairs.create(
            parsed_args.name,
            public_key=public_key,
        )

        # NOTE(dtroyer): how do we want to handle the display of the private
        #                key when it needs to be communicated back to the user
        #                For now, duplicate nova keypair-add command output
        info = {}
        if public_key:
            info.update(keypair._info)
            del info['public_key']
            return zip(*sorted(six.iteritems(info)))
        else:
            sys.stdout.write(keypair.private_key)
            return ({}, {})


class DeleteKeypair(command.Command):
    """Delete public key"""

    def get_parser(self, prog_name):
        parser = super(DeleteKeypair, self).get_parser(prog_name)
        parser.add_argument(
            'name',
            metavar='<key>',
            help='Public key to delete',
        )
        return parser

    def take_action(self, parsed_args):
        compute_client = self.app.client_manager.compute
        compute_client.keypairs.delete(parsed_args.name)


class ListKeypair(command.Lister):
    """List public key fingerprints"""

    def take_action(self, parsed_args):
        compute_client = self.app.client_manager.compute
        columns = (
            "Name",
            "Fingerprint"
        )
        data = compute_client.keypairs.list()

        return (columns,
                (utils.get_item_properties(
                    s, columns,
                ) for s in data))


class ShowKeypair(command.ShowOne):
    """Display public key details"""

    def get_parser(self, prog_name):
        parser = super(ShowKeypair, self).get_parser(prog_name)
        parser.add_argument(
            'name',
            metavar='<key>',
            help='Public key to display',
        )
        parser.add_argument(
            '--public-key',
            action='store_true',
            default=False,
            help='Show only bare public key',
        )
        return parser

    def take_action(self, parsed_args):
        compute_client = self.app.client_manager.compute
        keypair = utils.find_resource(compute_client.keypairs,
                                      parsed_args.name)

        info = {}
        info.update(keypair._info)
        if not parsed_args.public_key:
            del info['public_key']
            return zip(*sorted(six.iteritems(info)))
        else:
            # NOTE(dtroyer): a way to get the public key in a similar form
            #                as the private key in the create command
            sys.stdout.write(keypair.public_key)
            return ({}, {})