71 lines
2.8 KiB
Python
71 lines
2.8 KiB
Python
# Copyright (c) 2014 Hewlett-Packard Development Company, L.P.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import re
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from glanceclient import exc as exceptions
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from glanceclient.v2.client import Client as real_glance_client
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def create_or_find_kernel_and_ramdisk(glanceclient, kernel_name, ramdisk_name):
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"""Map kernel and ramdisk to file/HTTP path or Glance ID.
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An exception will be raised if kernel_name or ramdisk_name is not a path
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and instead refers to a non-existent Glance image.
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:param glanceclient: A client for Glance.
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:param kernel_name: Name to search for the kernel or path to kernel.
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:param ramdisk_name: Name to search for the ramdisk or path to ramdisk.
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:returns: A dictionary mapping kernel or ramdisk to path or Glance ID.
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"""
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kernel_image = _check_image(glanceclient, kernel_name, disk_format='aki',
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image_type='Kernel')
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ramdisk_image = _check_image(glanceclient, ramdisk_name, disk_format='ari',
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image_type='Ramdisk')
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return {'kernel': kernel_image, 'ramdisk': ramdisk_image}
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def _check_image(glanceclient, name, disk_format, image_type):
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if re.match(r'^(file|https?)://', name):
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return name
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try:
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if isinstance(glanceclient, real_glance_client):
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images = glanceclient.images.list(name=name,
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disk_format=disk_format)
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image = None
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for img in images:
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if ((img['name'] == name or img['id'] == name) and
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img['disk_format'] == disk_format):
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image = img
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break
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else:
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# TODO(dprince) remove this
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# This code expects the python-openstackclient version of
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# "glanceclient" (which isn't pure python-glanceclient) and is
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# here for backwards compat until python-tripleoclient starts
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# using the Mistral API for this functionality.
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image = glanceclient.images.find(name=name,
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disk_format=disk_format)
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except exceptions.NotFound:
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image = None
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if image:
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return image.id
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else:
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raise ValueError("%s image %s not found in Glance" % (image_type,
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name))
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