Synnefo

import datetime

class Image(models.Model):

    IMAGE_STATES = (

        ('ACTIVE', 'Active'),

        ('SAVING', 'Saving'),

        ('DELETED', 'Deleted')

    )

    # The list of supported Image formats

    FORMATS = (

        ('dump', 'ext3 dump'),

        ('extdump', 'Raw ext2/3/4 dump'),

        ('lvm', 'lvm snapshot'),

        ('ntfsclone', 'Windows Image produced by ntfsclone'),

        ('ntfsdump', 'Raw NTFS dump'),

        ('diskdump', 'Raw dump of a hard disk')

    )

    name = models.CharField('Image name', max_length=255)

    state = models.CharField('Current Image State', choices=IMAGE_STATES,

                             max_length=30)

    userid = models.CharField('User ID of the owner', max_length=100, 

                              null=True)

    created = models.DateTimeField('Time of creation', auto_now_add=True)

    updated = models.DateTimeField('Time of last update', auto_now=True)

    sourcevm = models.ForeignKey('VirtualMachine', null=True)

    backend_id = models.CharField(max_length=50, default='debian_base')

    format = models.CharField(choices=FORMATS, max_length=30, default='dump')

    public = models.BooleanField(default=False)

    def __unicode__(self):

        return self.name

class ImageMetadata(models.Model):

    meta_key = models.CharField('Image metadata key name', max_length=50)

    meta_value = models.CharField('Image metadata value', max_length=500)

    image = models.ForeignKey(Image, related_name='metadata')

    class Meta:

        unique_together = (('meta_key', 'image'),)

        verbose_name = u'Key-value pair of Image metadata.'

    def __unicode__(self):

        return u'%s: %s' % (self.meta_key, self.meta_value)

    charged = models.DateTimeField(default=datetime.datetime.now())