416 lines
17 KiB
Python
416 lines
17 KiB
Python
# Copyright 2012 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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#
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# Copyright 2012 Nebula, Inc.
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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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"""
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Views for managing images.
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"""
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from django.conf import settings
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from django.core import validators
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from django.forms import ValidationError
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from django.forms.widgets import HiddenInput
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from django.template import defaultfilters
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from django.utils.translation import ugettext_lazy as _
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import six
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from horizon import exceptions
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from horizon import forms
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from horizon import messages
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from openstack_dashboard import api
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from openstack_dashboard import policy
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IMAGE_BACKEND_SETTINGS = getattr(settings, 'OPENSTACK_IMAGE_BACKEND', {})
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IMAGE_FORMAT_CHOICES = IMAGE_BACKEND_SETTINGS.get('image_formats', [])
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class ImageURLField(forms.URLField):
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default_validators = [validators.URLValidator(schemes=["http", "https"])]
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def create_image_metadata(data):
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"""Generate metadata dict for a new image from a given form data."""
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# Glance does not really do anything with container_format at the
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# moment. It requires it is set to the same disk_format for the three
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# Amazon image types, otherwise it just treats them as 'bare.' As such
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# we will just set that to be that here instead of bothering the user
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# with asking them for information we can already determine.
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disk_format = data['disk_format']
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if disk_format in ('ami', 'aki', 'ari',):
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container_format = disk_format
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elif disk_format == 'docker':
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# To support docker containers we allow the user to specify
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# 'docker' as the format. In that case we really want to use
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# 'raw' as the disk format and 'docker' as the container format.
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disk_format = 'raw'
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container_format = 'docker'
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elif disk_format == 'ova':
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# If the user wishes to upload an OVA using Horizon, then
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# 'ova' must be the container format and 'vmdk' must be the disk
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# format.
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container_format = 'ova'
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disk_format = 'vmdk'
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else:
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container_format = 'bare'
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meta = {'protected': data['protected'],
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'disk_format': disk_format,
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'container_format': container_format,
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'min_disk': (data['minimum_disk'] or 0),
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'min_ram': (data['minimum_ram'] or 0),
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'name': data['name']}
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is_public = data.get('is_public', data.get('public', False))
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properties = {}
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# NOTE(tsufiev): in V2 the way how empty non-base attributes (AKA metadata)
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# are handled has changed: in V2 empty metadata is kept in image
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# properties, while in V1 they were omitted. Skip empty description (which
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# is metadata) to keep the same behavior between V1 and V2
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if data.get('description'):
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properties['description'] = data['description']
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if data.get('kernel'):
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properties['kernel_id'] = data['kernel']
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if data.get('ramdisk'):
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properties['ramdisk_id'] = data['ramdisk']
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if data.get('architecture'):
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properties['architecture'] = data['architecture']
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if api.glance.VERSIONS.active < 2:
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meta.update({'is_public': is_public, 'properties': properties})
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else:
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meta['visibility'] = 'public' if is_public else 'private'
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meta.update(properties)
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return meta
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if api.glance.get_image_upload_mode() == 'direct':
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FileField = forms.ExternalFileField
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CreateParent = six.with_metaclass(forms.ExternalUploadMeta,
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forms.SelfHandlingForm)
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else:
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FileField = forms.FileField
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CreateParent = forms.SelfHandlingForm
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class CreateImageForm(CreateParent):
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name = forms.CharField(max_length=255, label=_("Name"))
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description = forms.CharField(
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max_length=255,
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widget=forms.Textarea(attrs={'rows': 4}),
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label=_("Description"),
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required=False)
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source_type = forms.ChoiceField(
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label=_('Image Source'),
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required=False,
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choices=[('url', _('Image Location')),
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('file', _('Image File'))],
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widget=forms.ThemableSelectWidget(attrs={
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'class': 'switchable',
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'data-slug': 'source'}))
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image_url_attrs = {
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'class': 'switched',
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'data-switch-on': 'source',
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'data-source-url': _('Image Location'),
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'ng-model': 'ctrl.copyFrom',
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'ng-change': 'ctrl.selectImageFormat(ctrl.copyFrom)',
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'placeholder': 'http://example.com/image.img'
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}
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image_url = ImageURLField(label=_("Image Location"),
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help_text=_("An external (HTTP/HTTPS) URL to "
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"load the image from."),
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widget=forms.TextInput(attrs=image_url_attrs),
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required=False)
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image_attrs = {
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'class': 'switched',
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'data-switch-on': 'source',
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'data-source-file': _('Image File'),
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'ng-model': 'ctrl.imageFile',
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'ng-change': 'ctrl.selectImageFormat(ctrl.imageFile.name)',
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'image-file-on-change': None
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}
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image_file = FileField(label=_("Image File"),
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help_text=_("A local image to upload."),
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widget=forms.FileInput(attrs=image_attrs),
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required=False)
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kernel = forms.ChoiceField(
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label=_('Kernel'),
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required=False,
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widget=forms.ThemableSelectWidget(
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transform=lambda x: "%s (%s)" % (
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x.name, defaultfilters.filesizeformat(x.size))))
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ramdisk = forms.ChoiceField(
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label=_('Ramdisk'),
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required=False,
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widget=forms.ThemableSelectWidget(
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transform=lambda x: "%s (%s)" % (
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x.name, defaultfilters.filesizeformat(x.size))))
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disk_format = forms.ChoiceField(label=_('Format'),
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choices=[],
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widget=forms.ThemableSelectWidget(attrs={
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'class': 'switchable',
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'ng-model': 'ctrl.diskFormat'}))
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architecture = forms.CharField(
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max_length=255,
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label=_("Architecture"),
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help_text=_('CPU architecture of the image.'),
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required=False)
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minimum_disk = forms.IntegerField(
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label=_("Minimum Disk (GB)"),
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min_value=0,
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help_text=_('The minimum disk size required to boot the image. '
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'If unspecified, this value defaults to 0 (no minimum).'),
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required=False)
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minimum_ram = forms.IntegerField(
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label=_("Minimum RAM (MB)"),
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min_value=0,
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help_text=_('The minimum memory size required to boot the image. '
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'If unspecified, this value defaults to 0 (no minimum).'),
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required=False)
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is_copying = forms.BooleanField(
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label=_("Copy Data"), initial=True, required=False,
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help_text=_('Specify this option to copy image data to the image '
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'service. If unspecified, image data will be used in its '
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'current location.'),
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widget=forms.CheckboxInput(attrs={
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'class': 'switched',
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'data-source-url': _('Image Location'),
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'data-switch-on': 'source'}))
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is_public = forms.BooleanField(
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label=_("Public"),
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help_text=_('Make the image visible across projects.'),
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required=False)
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protected = forms.BooleanField(
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label=_("Protected"),
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help_text=_('Prevent the deletion of the image.'),
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required=False)
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def __init__(self, request, *args, **kwargs):
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super(CreateImageForm, self).__init__(request, *args, **kwargs)
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if (api.glance.get_image_upload_mode() == 'off' or
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not policy.check((("image", "upload_image"),), request)):
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self._hide_file_source_type()
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if not policy.check((("image", "set_image_location"),), request):
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self._hide_url_source_type()
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# GlanceV2 feature removals
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if api.glance.VERSIONS.active >= 2:
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# NOTE: GlanceV2 doesn't support copy-from feature, sorry!
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self._hide_is_copying()
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if not getattr(settings, 'IMAGES_ALLOW_LOCATION', False):
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self._hide_url_source_type()
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if (api.glance.get_image_upload_mode() == 'off' or not
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policy.check((("image", "upload_image"),), request)):
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# Neither setting a location nor uploading image data is
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# allowed, so throw an error.
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msg = _('The current Horizon settings indicate no valid '
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'image creation methods are available. Providing '
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'an image location and/or uploading from the '
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'local file system must be allowed to support '
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'image creation.')
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messages.error(request, msg)
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raise ValidationError(msg)
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if not policy.check((("image", "publicize_image"),), request):
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self._hide_is_public()
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self.fields['disk_format'].choices = IMAGE_FORMAT_CHOICES
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try:
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kernel_images = api.glance.image_list_detailed(
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request, filters={'disk_format': 'aki'})[0]
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except Exception:
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kernel_images = []
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msg = _('Unable to retrieve image list.')
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messages.error(request, msg)
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if kernel_images:
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choices = [('', _("Choose an image"))]
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for image in kernel_images:
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choices.append((image.id, image))
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self.fields['kernel'].choices = choices
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else:
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del self.fields['kernel']
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try:
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ramdisk_images = api.glance.image_list_detailed(
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request, filters={'disk_format': 'ari'})[0]
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except Exception:
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ramdisk_images = []
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msg = _('Unable to retrieve image list.')
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messages.error(request, msg)
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if ramdisk_images:
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choices = [('', _("Choose an image"))]
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for image in ramdisk_images:
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choices.append((image.id, image))
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self.fields['ramdisk'].choices = choices
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else:
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del self.fields['ramdisk']
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def _hide_file_source_type(self):
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self.fields['image_file'].widget = HiddenInput()
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source_type = self.fields['source_type']
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source_type.choices = [choice for choice in source_type.choices
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if choice[0] != 'file']
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if len(source_type.choices) == 1:
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source_type.widget = HiddenInput()
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def _hide_url_source_type(self):
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self.fields['image_url'].widget = HiddenInput()
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source_type = self.fields['source_type']
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source_type.choices = [choice for choice in source_type.choices
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if choice[0] != 'url']
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if len(source_type.choices) == 1:
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source_type.widget = HiddenInput()
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def _hide_is_public(self):
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self.fields['is_public'].widget = HiddenInput()
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self.fields['is_public'].initial = False
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def _hide_is_copying(self):
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self.fields['is_copying'].widget = HiddenInput()
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self.fields['is_copying'].initial = False
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def clean(self):
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data = super(CreateImageForm, self).clean()
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# The image_file key can be missing based on particular upload
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# conditions. Code defensively for it here...
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source_type = data.get('source_type', None)
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image_file = data.get('image_file', None)
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image_url = data.get('image_url', None)
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if not image_url and not image_file:
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msg = _("An image file or an external location must be specified.")
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if source_type == 'file':
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raise ValidationError({'image_file': [msg, ]})
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else:
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raise ValidationError({'image_url': [msg, ]})
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else:
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return data
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def handle(self, request, data):
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meta = create_image_metadata(data)
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# Add image source file or URL to metadata
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if (api.glance.get_image_upload_mode() != 'off' and
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policy.check((("image", "upload_image"),), request) and
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data.get('image_file', None)):
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meta['data'] = data['image_file']
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elif data.get('is_copying'):
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meta['copy_from'] = data['image_url']
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else:
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meta['location'] = data['image_url']
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try:
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image = api.glance.image_create(request, **meta)
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messages.info(request,
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_('Your image %s has been queued for creation.') %
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meta['name'])
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return image
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except Exception as e:
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msg = _('Unable to create new image')
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# TODO(nikunj2512): Fix this once it is fixed in glance client
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if hasattr(e, 'code') and e.code == 400:
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if "Invalid disk format" in e.details:
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msg = _('Unable to create new image: Invalid disk format '
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'%s for image.') % meta['disk_format']
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elif "Image name too long" in e.details:
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msg = _('Unable to create new image: Image name too long.')
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elif "not supported" in e.details:
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msg = _('Unable to create new image: URL scheme not '
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'supported.')
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exceptions.handle(request, msg)
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return False
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class UpdateImageForm(forms.SelfHandlingForm):
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image_id = forms.CharField(widget=forms.HiddenInput())
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name = forms.CharField(max_length=255, label=_("Name"))
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description = forms.CharField(
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max_length=255,
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widget=forms.Textarea(attrs={'rows': 4}),
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label=_("Description"),
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required=False)
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kernel = forms.CharField(
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max_length=36,
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label=_("Kernel ID"),
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required=False,
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widget=forms.TextInput(attrs={'readonly': 'readonly'}),
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)
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ramdisk = forms.CharField(
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max_length=36,
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label=_("Ramdisk ID"),
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required=False,
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widget=forms.TextInput(attrs={'readonly': 'readonly'}),
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)
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architecture = forms.CharField(
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label=_("Architecture"),
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required=False,
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widget=forms.TextInput(attrs={'readonly': 'readonly'}),
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)
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disk_format = forms.ThemableChoiceField(
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label=_("Format"),
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)
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minimum_disk = forms.IntegerField(label=_("Minimum Disk (GB)"),
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min_value=0,
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help_text=_('The minimum disk size'
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' required to boot the'
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' image. If unspecified,'
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' this value defaults to'
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' 0 (no minimum).'),
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required=False)
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minimum_ram = forms.IntegerField(label=_("Minimum RAM (MB)"),
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min_value=0,
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help_text=_('The minimum memory size'
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' required to boot the'
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' image. If unspecified,'
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' this value defaults to'
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' 0 (no minimum).'),
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required=False)
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public = forms.BooleanField(label=_("Public"), required=False)
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protected = forms.BooleanField(label=_("Protected"), required=False)
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def __init__(self, request, *args, **kwargs):
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super(UpdateImageForm, self).__init__(request, *args, **kwargs)
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self.fields['disk_format'].choices = [(value, name) for value,
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name in IMAGE_FORMAT_CHOICES
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if value]
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if not policy.check((("image", "publicize_image"),), request):
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self.fields['public'].widget = forms.CheckboxInput(
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attrs={'readonly': 'readonly', 'disabled': 'disabled'})
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self.fields['public'].help_text = _(
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'Non admin users are not allowed to make images public.')
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def handle(self, request, data):
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image_id = data['image_id']
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error_updating = _('Unable to update image "%s".')
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meta = create_image_metadata(data)
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try:
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image = api.glance.image_update(request, image_id, **meta)
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messages.success(request, _('Image was successfully updated.'))
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return image
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except Exception:
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exceptions.handle(request, error_updating % image_id)
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