root / snf-cyclades-app / synnefo / logic / management / commands / pool-show.py @ d7841399
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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 django.core.management.base import BaseCommand, CommandError |
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from optparse import make_option |
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from util import pool_table_from_type, pool_map_chunks |
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from synnefo.db.pools import bitarray_to_map |
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POOL_CHOICES = ['bridge', 'mac-prefix'] |
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class Command(BaseCommand): |
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args = "<pool ID>"
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help = "Show a pool"
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output_transaction = True
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option_list = BaseCommand.option_list + ( |
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make_option('--type', dest='type', |
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choices=POOL_CHOICES, |
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help="Type of pool"
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), |
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) |
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def handle(self, *args, **options): |
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type_ = options['type']
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if not type_: |
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raise CommandError("Type of pool is mandatory") |
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pool_table = pool_table_from_type(type_) |
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try:
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pool_id = int(args[0]) |
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pool_row = pool_table.objects.get(id=pool_id) |
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except (ValueError, pool_table.DoesNotExist): |
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raise CommandError("Invalid pool ID") |
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pool = pool_row.pool |
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kv = { |
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'id': pool_row.id,
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'offset': pool_row.offset,
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'base': pool_row.base,
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'size': pool_row.size,
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'available': pool.count_available(),
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'reserved': pool.count_reserved(),
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} |
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for key, val in sorted(kv.items()): |
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line = '%s: %s\n' % (key.rjust(16), val) |
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self.stdout.write(line.encode('utf8')) |
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step = (type_ == 'bridge') and 64 or 80 |
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print_map('Pool', pool.to_map(), step, self.stdout) |
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print_map('Reserved', bitarray_to_map(pool.reserved[:pool_row.size]), step, self.stdout) |
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def print_map(name, pool_map, step, out): |
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sep = '*' * 80 |
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out.write(sep + "\n")
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out.write("%s: \n" % name)
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out.write(sep + "\n")
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count = 0
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for chunk in pool_map_chunks(pool_map, step): |
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chunk_len = len(chunk)
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out.write(("%s " % count).rjust(4)) |
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out.write((chunk + " %d\n") % (count + chunk_len - 1)) |
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count += chunk_len |