Synnefo

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import json

from django.core.management.base import BaseCommand, CommandError

from synnefo.db.models import (Backend, Network, BackendNetwork,

                               pooled_rapi_client)

from synnefo.logic.rapi import GanetiApiError

from util import pool_map_chunks

class Command(BaseCommand):

    help = "Inspect a network on DB and Ganeti."

    def handle(self, *args, **options):

        if len(args) != 1:

            raise CommandError("Please provide a network ID.")

        try:

            net_id = int(args[0])

        except ValueError:

            raise CommandError("Invalid network ID.")

        try:

            net = Network.objects.get(id=net_id)

        except Network.DoesNotExist:

            raise CommandError("Network not found in DB.")

        sep = '-' * 80 + '\n'

        labels = ('name', 'backend-name', 'state', 'owner', 'subnet', 'gateway',

                  'mac_prefix', 'link', 'public', 'dhcp', 'type', 'deleted',

                  'action', 'pool')

        fields = (net.name, net.backend_id, net.state, str(net.userid),

                  str(net.subnet), str(net.gateway), str(net.mac_prefix),

                  str(net.link), str(net.public),  str(net.dhcp),

                  str(net.type), str(net.deleted), str(net.action),

                  str(splitPoolMap(net.get_pool().to_map(), 64)))

        self.stdout.write(sep)

        self.stdout.write('State of Network in DB\n')

        self.stdout.write(sep)

        for l, f in zip(labels, fields):

            self.stdout.write(l.ljust(20) + ': ' + f.ljust(20) + '\n')

        labels = ('Backend', 'State', 'Deleted', 'JobID', 'OpCode',

                  'JobStatus')

        for back_net in BackendNetwork.objects.filter(network=net):

            self.stdout.write('\n')

            fields = (back_net.backend.clustername, back_net.operstate,

                     str(back_net.deleted),  str(back_net.backendjobid),

                     str(back_net.backendopcode),

                     str(back_net.backendjobstatus))

            for l, f in zip(labels, fields):

                self.stdout.write(l.ljust(20) + ': ' + f.ljust(20) + '\n')

        self.stdout.write('\n')

        self.stdout.write(sep)

        self.stdout.write('State of Network in Ganeti\n')

        self.stdout.write(sep)

        for backend in Backend.objects.exclude(offline=True):

            with pooled_rapi_client(backend) as client:

                try:

                    g_net = client.GetNetwork(net.backend_id)

                    self.stdout.write("Backend: %s\n" % backend.clustername)

                    print json.dumps(g_net, indent=2)

                    self.stdout.write(sep)

                except GanetiApiError as e:

                    if e.code == 404:

                        self.stdout.write('Network does not exist in backend %s\n' %

                                          backend.clustername)

                    else:

                        raise e

def splitPoolMap(s, count):

    chunks = pool_map_chunks(s, count)

    acc = []

    count = 0

    for chunk in chunks:

        chunk_len = len(chunk)

        acc.append(str(count).rjust(3) + ' ' + chunk + ' ' +

                   str(count + chunk_len - 1).ljust(4))

        count += chunk_len

    return '\n' + '\n'.join(acc)