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root / snf-cyclades-app / synnefo / logic / management / commands / backend-list.py @ 56a1134d

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# Copyright 2012 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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#   1. Redistributions of source code must retain the above
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#      copyright notice, this list of conditions and the following
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#      disclaimer.
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#
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#   2. Redistributions in binary form must reproduce the above
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#      copyright notice, this list of conditions and the following
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#      disclaimer in the documentation and/or other materials
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#      provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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from optparse import make_option
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from django.core.management.base import BaseCommand, CommandError
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from synnefo.db.models import Backend
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class Command(BaseCommand):
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    help = "List backends"
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    option_list = BaseCommand.option_list + (
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        make_option('-c',
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            action='store_true',
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            dest='csv',
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            default=False,
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            help="Use pipes to separate values"),
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        )
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    def handle(self, *args, **options):
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        if args:
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            raise CommandError("Command doesn't accept any arguments")
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        backends = Backend.objects.order_by('id')
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        labels = ('id', 'clustername', 'port', 'username', "vm's", 'drained',
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                  'offline')
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        columns = (3, 50, 5, 10, 4, 6, 6)
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        if not options['csv']:
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            line = ' '.join(l.rjust(w) for l, w in zip(labels, columns))
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            sep = '-' * len(line)
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            self.stdout.write(sep + '\n')
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            self.stdout.write(line + '\n')
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            self.stdout.write(sep + '\n')
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        for backend in backends:
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            id = str(backend.id)
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            vms = str(backend.virtual_machines.filter(deleted=False).count())
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            fields = (id, backend.clustername, str(backend.port),
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                      backend.username, vms, str(backend.drained),
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                      str(backend.offline))
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            if options['csv']:
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                line = '|'.join(fields)
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            else:
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                line = ' '.join(f.rjust(w) for f, w in zip(fields, columns))
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            self.stdout.write(line.encode('utf8') + '\n')