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#!/usr/bin/env python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
# 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.
# Interactive shell based on Django:
#
# Copyright (c) 2005, the Lawrence Journal-World
# 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.
#
# 3. Neither the name of Django nor the names of its contributors may be
# used to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "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 THE COPYRIGHT
# OWNER 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.
"""
CLI interface for IPAM.
"""
import logging
import os
import sys
import json
import optparse
# If ../melange/__init__.py exists, add ../ to Python search path, so that
# it will override what happens to be installed in /usr/(local/)lib/python...
possible_topdir = os.path.normpath(os.path.join(os.path.abspath(sys.argv[0]),
os.pardir,
os.pardir))
if os.path.exists(os.path.join(possible_topdir, 'melange', '__init__.py')):
sys.path.insert(0, possible_topdir)
from melange import version
from gettext import gettext as _
from melange.common.client import Client
from melange.common.utils import Method, remove_nones
class Resource(object):
port = 9292
host = "0.0.0.0"
def __init__(self, path, name):
self.path = path
self.name = name
def create(self, **kwargs):
return self.request("POST", self.path,
body=json.dumps({self.name: kwargs}))
def update(self, id, **kwargs):
return self.request("PUT", self._member_path(id),
body=json.dumps({self.name: remove_nones(kwargs)}))
def all(self):
return self.request("GET", self.path)
def find(self, id):
return self.request("GET", self._member_path(id))
def delete(self, id):
return self.request("DELETE", self._member_path(id))
def _member_path(self, id):
return "{0}/{1}".format(self.path, id)
def request(self, method, path, body_params=None, **kwargs):
client = Client(host=self.host, port=self.port)
kwargs['headers'] = {'X_ROLE': "Admin",
'Content-Type': "application/json"}
response = client.do_request(method, path, **kwargs)
return json.loads(response.read() or "{}")
class IpBlockCommands(object):
def __init__(self, block):
self.block = block
def create(self, cidr, network_id=None, policy_id=None):
print self.block.create(cidr=cidr, network_id=network_id,
policy_id=policy_id)
def list(self):
print self.block.all()
def show(self, id):
print self.block.find(id)
def delete(self, id):
print self.block.delete(id)
class PolicyCommands(object):
def create(self, name, description=None):
print Policy.create(name=name, description=description)
def update(self, id, name, description=None):
print Policy.update(id, name=name, description=description)
def list(self):
print Policy.all()
def show(self, id):
print Policy.find(id)
def delete(self, id):
print Policy.delete(id)
class TenantIpBlockCommands(object):
def _block(self, tenant_id):
return Resource("/v0.1/ipam/tenants/{0}/private_ip_blocks"\
.format(tenant_id), "ip_block")
def create(self, tenant_id, cidr, network_id=None, policy_id=None):
print self._block(tenant_id).create(cidr=cidr, network_id=network_id,
policy_id=policy_id)
def list(self, tenant_id):
print self._block(tenant_id).all()
def show(self, tenant_id, id):
print self._block(tenant_id).find(id)
def delete(self, tenant_id, id):
print self._block(tenant_id).delete(id)
GlobalPrivateIpBlock = Resource("/v0.1/ipam/private_ip_blocks", 'ip_block')
PublicIpBlock = Resource("/v0.1/ipam/public_ip_blocks", 'ip_block')
Policy = Resource("/v0.1/ipam/policies", 'policy')
CATEGORIES = [('public_ip_block', IpBlockCommands(PublicIpBlock)),
('private_ip_block', IpBlockCommands(GlobalPrivateIpBlock)),
('tenant_ip_block', TenantIpBlockCommands()),
('policy', PolicyCommands())]
def lazy_match(name, key_value_tuples):
"""Finds all objects that have a key that case insensitively contains
[name] key_value_tuples is a list of tuples of the form (key, value)
returns a list of tuples of the form (key, value)"""
result = []
for (k, v) in key_value_tuples:
if k.lower().find(name.lower()) == 0:
result.append((k, v))
if len(result) == 0:
print "%s does not match any options:" % name
for k, _v in key_value_tuples:
print "\t%s" % k
sys.exit(2)
if len(result) > 1:
print "%s matched multiple options:" % name
for k, _v in result:
print "\t%s" % k
sys.exit(2)
return result
def methods_of(obj):
"""Get all callable methods of an object that don't start with underscore
returns a list of tuples of the form (method_name, method)"""
result = []
for i in dir(obj):
if callable(getattr(obj, i)) and not i.startswith('_'):
result.append((i, getattr(obj, i)))
return result
def create_options(parser):
"""
Sets up the CLI and config-file options that may be
parsed and program commands.
:param parser: The option parser
"""
parser.add_option('-v', '--verbose', default=False, action="store_true",
help="Print more verbose output")
parser.add_option('-H', '--host', metavar="ADDRESS", default="0.0.0.0",
help="Address of Melange API host. "
"Default: %default")
parser.add_option('-p', '--port', dest="port", metavar="PORT",
type=int, default=9292,
help="Port the Melange API host listens on. "
"Default: %default")
def parse_options(parser, cli_args):
"""
Returns the parsed CLI options, command to run and its arguments, merged
with any same-named options found in a configuration file
:param parser: The option parser
"""
(options, args) = parser.parse_args(cli_args)
if not args:
parser.print_usage()
sys.exit(2)
return (options, args)
def usage():
usage = """
%prog category action [args] [options]"
Available categories:
"""
for k, _v in CATEGORIES:
usage = usage + ("\t%s\n" % k)
return usage
def main():
oparser = optparse.OptionParser(version='%%prog %s'
% version.version_string(),
usage=usage().strip())
create_options(oparser)
(options, args) = parse_options(oparser, sys.argv[1:])
Resource.host, Resource.port = options.host, options.port
script_name = os.path.basename(sys.argv[0])
category = args.pop(0)
matches = lazy_match(category, CATEGORIES)
# instantiate the command group object
category, command_object = matches[0]
actions = methods_of(command_object)
if len(args) < 1:
print "Usage: " + script_name + " category action [<args>]"
print _("Available actions for %s category:") % category
for k, _v in actions:
print "\t%s" % k
sys.exit(2)
action = args.pop(0)
matches = lazy_match(action, actions)
action, fn = matches[0]
# call the action with the remaining arguments
try:
fn(*args)
sys.exit(0)
except TypeError:
print _("Possible wrong number of arguments supplied")
print "Usage: %s %s %s" % (script_name, category, Method(fn))
if options.verbose:
raise
sys.exit(2)
except Exception:
print _("Command failed, please check log for more info")
raise
if __name__ == '__main__':
main()
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