Synnefo

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from django.core.management.base import BaseCommand

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

                               BridgePoolTable, MacPrefixPoolTable)

from synnefo.db.pools import EmptyPool

from synnefo.settings import MAC_POOL_BASE

class Command(BaseCommand):

    help = 'Check consistency of unique resources.'

    def handle(self, **options):

        self.detect_bridges()

        self.detect_mac_prefixes()

        self.detect_unique_mac_prefixes()

    def detect_bridges(self):

        write = self.stdout.write

        write("---------------------------------------\n")

        write("Checking consistency of the Bridge Pool\n")

        write("---------------------------------------\n")

        try:

            bridge_pool = BridgePoolTable.get_pool()

        except EmptyPool:

            write("No Bridge Pool\n")

            return

        bridges = []

        for i in xrange(0, bridge_pool.size()):

            if not bridge_pool.is_available(i, index=True) and \

               not bridge_pool.is_reserved(i, index=True):

                bridges.append(bridge_pool.index_to_value(i))

        write("Used bridges from Pool: %d\n" % len(bridges))

        network_bridges = Network.objects.filter(type='PRIVATE_PHYSICAL_VLAN',

                                                deleted=False)\

                                         .values_list('link', flat=True)

        write("Used bridges from Networks: %d\n" %

                          len(network_bridges))

        set_network_bridges = set(network_bridges)

        if len(network_bridges) > len(set_network_bridges):

            write("Found duplicated bridges:\n")

            duplicates = list(network_bridges)

            for bridge in set_network_bridges:

                duplicates.remove(bridge)

            for bridge in set(duplicates):

                write("Duplicated bridge: %s. " % bridge)

                write("Used by the following Networks:\n")

                nets = Network.objects.filter(deleted=False, link=bridge)

                write("  " + "\n  ".join([str(net.id) for net in nets])\

                                  + "\n")

    def detect_mac_prefixes(self):

        write = self.stdout.write

        write("---------------------------------------\n")

        write("Checking consistency of the MAC Prefix Pool\n")

        write("---------------------------------------\n")

        try:

            macp_pool = MacPrefixPoolTable.get_pool()

        except EmptyPool:

            write("No mac-prefix pool\n")

            return

        macs = []

        for i in xrange(0, macp_pool.size()):

            if not macp_pool.is_available(i, index=True) and \

               not macp_pool.is_reserved(i, index=True):

                value = macp_pool.index_to_value(i)

                if value != MAC_POOL_BASE:

                    macs.append(macp_pool.index_to_value(i))

        write("Used MAC prefixes from Pool: %d\n" % len(macs))

        network_mac_prefixes = \

            Network.objects.filter(deleted=False)\

                            .exclude(mac_prefix=MAC_POOL_BASE) \

                            .values_list('mac_prefix', flat=True)

        write("Used MAC prefixes from Networks: %d\n" %

                          len(network_mac_prefixes))

        set_network_mac_prefixes = set(network_mac_prefixes)

        if len(network_mac_prefixes) > len(set_network_mac_prefixes):

            write("Found duplicated mac_prefixes:\n")

            duplicates = list(network_mac_prefixes)

            for mac_prefix in set_network_mac_prefixes:

                duplicates.remove(mac_prefix)

            for mac_prefix in set(duplicates):

                write("Duplicated mac_prefix: %s. " % mac_prefix)

                write("Used by the following Networks:\n")

                nets = Network.objects.filter(deleted=False,

                                              mac_prefix=mac_prefix)

                write("  " + "\n  ".join([str(net.id) for net in nets])\

                                  + "\n")

    def detect_unique_mac_prefixes(self):

        write = self.stdout.write

        write("---------------------------------------\n")

        write("Checking uniqueness of BackendNetwork prefixes.\n")

        write("---------------------------------------\n")

        mac_prefixes = BackendNetwork.objects.filter(deleted=False)\

                                      .values_list('mac_prefix', flat=True)

        mac_prefixes = filter(lambda x: not x.startswith(MAC_POOL_BASE),

                              mac_prefixes)

        set_mac_prefixes = set(mac_prefixes)

        if len(mac_prefixes) > len(set_mac_prefixes):

            write("Found duplicated mac_prefixes:\n")

            duplicates = list(mac_prefixes)

            for mac_prefix in set_mac_prefixes:

                duplicates.remove(mac_prefix)

            for mac_prefix in set(duplicates):

                write("Duplicated mac_prefix: %s. " % mac_prefix)

                write("Used by the following BackendNetworks:\n")

                nets = BackendNetwork.objects.filter(deleted=False,

                                                     mac_prefix=mac_prefix)

                write("  " + "\n  ".join([str(net.id) for net in nets])\

                                  + "\n")