149 lines
4.6 KiB
Python
149 lines
4.6 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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# All Rights Reserved.
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# Copyright (c) 2010 Citrix Systems, Inc.
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# Copyright 2011 Ken Pepple
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Built-in instance properties."""
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import re
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from nova import context
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from nova import db
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from nova import exception
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from nova import flags
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from nova import log as logging
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FLAGS = flags.FLAGS
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LOG = logging.getLogger(__name__)
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INVALID_NAME_REGEX = re.compile("[^\w\.\- ]")
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def create(name, memory, vcpus, root_gb, ephemeral_gb, flavorid, swap=None,
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rxtx_factor=None):
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"""Creates instance types."""
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if swap is None:
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swap = 0
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if rxtx_factor is None:
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rxtx_factor = 1
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kwargs = {
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'memory_mb': memory,
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'vcpus': vcpus,
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'root_gb': root_gb,
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'ephemeral_gb': ephemeral_gb,
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'swap': swap,
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'rxtx_factor': rxtx_factor,
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}
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# ensure name does not contain any special characters
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invalid_name = INVALID_NAME_REGEX.search(name)
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if invalid_name:
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msg = _("names can only contain [a-zA-Z0-9_.- ]")
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raise exception.InvalidInput(reason=msg)
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# ensure some attributes are integers and greater than or equal to 0
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for option in kwargs:
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try:
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kwargs[option] = int(kwargs[option])
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assert kwargs[option] >= 0
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except (ValueError, AssertionError):
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msg = _("create arguments must be positive integers")
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raise exception.InvalidInput(reason=msg)
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# some value are required to be nonzero, not just positive
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for option in ['memory_mb', 'vcpus']:
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try:
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assert kwargs[option] > 0
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except AssertionError:
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msg = _("create arguments must be positive integers")
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raise exception.InvalidInput(reason=msg)
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kwargs['name'] = name
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# NOTE(vish): Internally, flavorid is stored as a string but it comes
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# in through json as an integer, so we convert it here.
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kwargs['flavorid'] = unicode(flavorid)
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try:
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return db.instance_type_create(context.get_admin_context(), kwargs)
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except exception.DBError, e:
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LOG.exception(_('DB error: %s') % e)
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raise exception.InstanceTypeCreateFailed()
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def destroy(name):
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"""Marks instance types as deleted."""
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try:
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assert name is not None
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db.instance_type_destroy(context.get_admin_context(), name)
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except (AssertionError, exception.NotFound):
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LOG.exception(_('Instance type %s not found for deletion') % name)
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raise exception.InstanceTypeNotFoundByName(instance_type_name=name)
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def get_all_types(inactive=0, filters=None):
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"""Get all non-deleted instance_types.
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Pass true as argument if you want deleted instance types returned also.
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"""
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ctxt = context.get_admin_context()
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inst_types = db.instance_type_get_all(ctxt, inactive, filters)
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inst_type_dict = {}
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for inst_type in inst_types:
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inst_type_dict[inst_type['name']] = inst_type
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return inst_type_dict
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get_all_flavors = get_all_types
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def get_default_instance_type():
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"""Get the default instance type."""
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name = FLAGS.default_instance_type
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return get_instance_type_by_name(name)
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def get_instance_type(instance_type_id):
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"""Retrieves single instance type by id."""
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if instance_type_id is None:
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return get_default_instance_type()
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ctxt = context.get_admin_context()
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return db.instance_type_get(ctxt, instance_type_id)
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def get_instance_type_by_name(name):
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"""Retrieves single instance type by name."""
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if name is None:
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return get_default_instance_type()
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ctxt = context.get_admin_context()
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return db.instance_type_get_by_name(ctxt, name)
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# TODO(termie): flavor-specific code should probably be in the API that uses
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# flavors.
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def get_instance_type_by_flavor_id(flavorid):
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"""Retrieve instance type by flavorid.
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:raises: FlavorNotFound
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"""
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ctxt = context.get_admin_context(read_deleted="yes")
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return db.instance_type_get_by_flavor_id(ctxt, flavorid)
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