xos/core/models/instance.py

# Copyright 2017-present Open Networking Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from xos.exceptions import *
from instance_decl import *

class Instance(Instance_decl):
    class Meta:
        proxy = True

    def get_controller (self):
        return self.node.site_deployment.controller

    def tologdict(self):
        d=super(Instance,self).tologdict()
        try:
            d['slice_name']=self.slice.name
            d['controller_name']=self.get_controller().name
        except:
            pass
        return d

    def save(self, *args, **kwargs):
        if not self.name:
            self.name = self.slice.name
        if not self.creator and hasattr(self, 'caller'):
            self.creator = self.caller

        super(Instance, self).save(*args, **kwargs)

    def all_ips(self):
        ips={}
        for ns in self.ports.all():
           if ns.ip:
               ips[ns.network.name] = ns.ip
        return ips

    def all_ips_string(self):
        result = []
        ips = self.all_ips()
        for key in sorted(ips.keys()):
            #result.append("%s = %s" % (key, ips[key]))
            result.append(ips[key])
        return ", ".join(result)
    all_ips_string.short_description = "addresses"

    def get_public_ip(self):
        for ns in self.ports.all():
            if (ns.ip) and (ns.network.template.visibility=="public") and (ns.network.template.translation=="none"):
                return ns.ip
        return None

    # return an address on nat-net
    def get_network_ip(self, pattern):
        for ns in self.ports.all():
            if pattern in ns.network.name.lower():
                return ns.ip
        return None

    # return an address that the synchronizer can use to SSH to the instance
    def get_ssh_ip(self):
        # first look specifically for a management_local network
        for ns in self.ports.all():
            if ns.network.template and ns.network.template.vtn_kind=="MANAGEMENT_LOCAL":
                return ns.ip

        # for compatibility, now look for any management network
        management=self.get_network_ip("management")
        if management:
            return management

        # if all else fails, look for nat-net (for OpenCloud?)
        return self.get_network_ip("nat")

    def get_ssh_command(self):
        if (not self.instance_id) or (not self.node) or (not self.instance_name):
            return None
        else:
            return 'ssh -o "ProxyCommand ssh -q %s@%s" ubuntu@%s' % (self.instance_id, self.node.name, self.instance_name)

    def get_public_keys(self):
        from core.models.sliceprivilege import Privilege
        slice_privileges = Privilege.objects.filter(object_id=self.slice.id, object_type='Slice', accessor_type='User')
        slice_users = [User.objects.get(pk = priv.accessor_id) for priv in slice_privileges]
        pubkeys = set([u.public_key for u in slice_users if u.public_key])

        if self.creator.public_key:
            pubkeys.add(self.creator.public_key)

        if self.slice.creator.public_key:
            pubkeys.add(self.slice.creator.public_key)

        if self.slice.service and self.slice.service.public_key:
            pubkeys.add(self.slice.service.public_key)

        return pubkeys