Add support for Linux Bonding to os-net-config ifcfg

This change adds support for Linux Bonding to the impl_ifcfg
in os-net-config. This change adds support for configuring Linux
Bonds using the Bonding module rather than Open vSwitch. Most of
the options for Linux Bonds are the same as OVS, with the exception
of bonding_options instead of ovs_options.

Change-Id: If8c6de1554234277843de9fac58536dd5b0a941b

1 files changed, 57 insertions, 0 deletions

diff --git a/os_net_config/objects.py b/os_net_config/objects.py
index 388ea7c..84ef3a1 100644
--- a/os_net_config/objects.py
+++ b/os_net_config/objects.py
@@ -40,6 +40,8 @@ def object_from_json(json):
         return OvsBridge.from_json(json)
     elif obj_type == "ovs_bond":
         return OvsBond.from_json(json)
+    elif obj_type == "linux_bond":
+        return LinuxBond.from_json(json)
 
 
 def _get_required_field(json, name, object_name):
@@ -330,6 +332,61 @@ class OvsBridge(_BaseOpts):
                          dhclient_args=dhclient_args, dns_servers=dns_servers)
 
 
+class LinuxBond(_BaseOpts):
+    """Base class for Linux bonds."""
+
+    def __init__(self, name, use_dhcp=False, use_dhcpv6=False, addresses=None,
+                 routes=None, mtu=1500, primary=False, members=None,
+                 bonding_options=None, nic_mapping=None, persist_mapping=False,
+                 defroute=True, dhclient_args=None, dns_servers=None):
+        addresses = addresses or []
+        routes = routes or []
+        members = members or []
+        dns_servers = dns_servers or []
+        super(LinuxBond, self).__init__(name, use_dhcp, use_dhcpv6, addresses,
+                                        routes, mtu, primary, nic_mapping,
+                                        persist_mapping, defroute,
+                                        dhclient_args, dns_servers)
+        self.members = members
+        self.bonding_options = bonding_options
+        for member in self.members:
+            if member.primary:
+                if self.primary_interface_name:
+                    msg = 'Only one primary interface allowed per bond.'
+                    raise InvalidConfigException(msg)
+                if member.primary_interface_name:
+                    self.primary_interface_name = member.primary_interface_name
+                else:
+                    self.primary_interface_name = member.name
+
+    @staticmethod
+    def from_json(json):
+        name = _get_required_field(json, 'name', 'LinuxBond')
+        (use_dhcp, use_dhcpv6, addresses, routes, mtu, nic_mapping,
+         persist_mapping, defroute, dhclient_args,
+         dns_servers) = _BaseOpts.base_opts_from_json(
+             json, include_primary=False)
+        bonding_options = json.get('bonding_options')
+        members = []
+
+        # members
+        members_json = json.get('members')
+        if members_json:
+            if isinstance(members_json, list):
+                for member in members_json:
+                    members.append(object_from_json(member))
+            else:
+                msg = 'Members must be a list.'
+                raise InvalidConfigException(msg)
+
+        return LinuxBond(name, use_dhcp=use_dhcp, use_dhcpv6=use_dhcpv6,
+                         addresses=addresses, routes=routes, mtu=mtu,
+                         members=members, bonding_options=bonding_options,
+                         nic_mapping=nic_mapping,
+                         persist_mapping=persist_mapping, defroute=defroute,
+                         dhclient_args=dhclient_args, dns_servers=dns_servers)
+
+
 class OvsBond(_BaseOpts):
     """Base class for OVS bonds."""