Fixes using single network (previously called flat) for deploy

Also contains various network parsing fixes.

JIRA: APEX-361

Change-Id: I5e40ed67267d5ded85adc2982a8726ebbceaeae5
Signed-off-by: Tim Rozet <trozet@redhat.com>

4 files changed, 38 insertions, 35 deletions

diff --git a/lib/python/apex/deploy_settings.py b/lib/python/apex/deploy_settings.py
index a27d13f1..963520a6 100644
--- a/lib/python/apex/deploy_settings.py
+++ b/lib/python/apex/deploy_settings.py
@@ -38,7 +38,7 @@ class DeploySettings(dict):
     """
     def __init__(self, filename):
         init_dict = {}
-        if type(filename) is str:
+        if isinstance(filename, str):
             with open(filename, 'r') as deploy_settings_file:
                 init_dict = yaml.safe_load(deploy_settings_file)
         else:
diff --git a/lib/python/apex/inventory.py b/lib/python/apex/inventory.py
index 37143566..711eb18f 100644
--- a/lib/python/apex/inventory.py
+++ b/lib/python/apex/inventory.py
@@ -22,7 +22,7 @@ class Inventory(dict):
     """
     def __init__(self, source, ha=True, virtual=False):
         init_dict = {}
-        if type(source) is str:
+        if isinstance(source, str):
             with open(source, 'r') as inventory_file:
                 yaml_dict = yaml.safe_load(inventory_file)
             # collapse node identifiers from the structure
diff --git a/lib/python/apex/network_environment.py b/lib/python/apex/network_environment.py
index b931a758..4fc6f583 100644
--- a/lib/python/apex/network_environment.py
+++ b/lib/python/apex/network_environment.py
@@ -21,6 +21,7 @@ from .common.constants import (
     COMPUTE_PRE,
     PRE_CONFIG_DIR
 )
+from .network_settings import NetworkSettings
 
 HEAT_NONE = 'OS::Heat::None'
 PORTS = '/ports'
@@ -63,15 +64,13 @@ class NetworkEnvironment(dict):
         Create Network Environment according to Network Settings
         """
         init_dict = {}
-        if type(filename) is str:
+        if isinstance(filename, str):
             with open(filename, 'r') as net_env_fh:
                 init_dict = yaml.safe_load(net_env_fh)
 
         super().__init__(init_dict)
-        try:
-            enabled_nets = net_settings.enabled_network_list
-        except:
-            raise NetworkEnvException('Invalid Network Setting object')
+        if not isinstance(net_settings, NetworkSettings):
+            raise NetworkEnvException('Invalid Network Settings object')
 
         self._set_tht_dir()
 
@@ -86,19 +85,21 @@ class NetworkEnvironment(dict):
             nets[ADMIN_NETWORK]['installer_vm']['ip']
         self[param_def]['DnsServers'] = net_settings['dns_servers']
 
-        if EXTERNAL_NETWORK in enabled_nets:
-            external_cidr = nets[EXTERNAL_NETWORK][0]['cidr']
+        if EXTERNAL_NETWORK in net_settings.enabled_network_list:
+            external_cidr = net_settings.get_network(EXTERNAL_NETWORK)['cidr']
             self[param_def]['ExternalNetCidr'] = str(external_cidr)
-            if type(nets[EXTERNAL_NETWORK][0]['installer_vm']['vlan']) is int:
+            external_vlan = self._get_vlan(net_settings.get_network(
+                                           EXTERNAL_NETWORK))
+            if isinstance(external_vlan, int):
                 self[param_def]['NeutronExternalNetworkBridge'] = '""'
-                self[param_def]['ExternalNetworkVlanID'] = \
-                    nets[EXTERNAL_NETWORK][0]['installer_vm']['vlan']
-            external_range = nets[EXTERNAL_NETWORK][0]['overcloud_ip_range']
+                self[param_def]['ExternalNetworkVlanID'] = external_vlan
+            external_range = net_settings.get_network(EXTERNAL_NETWORK)[
+                'overcloud_ip_range']
             self[param_def]['ExternalAllocationPools'] = \
                 [{'start': str(external_range[0]),
                   'end': str(external_range[1])}]
             self[param_def]['ExternalInterfaceDefaultRoute'] = \
-                nets[EXTERNAL_NETWORK][0]['gateway']
+                net_settings.get_network(EXTERNAL_NETWORK)['gateway']
 
             if external_cidr.version == 6:
                 postfix = '/external_v6.yaml'
@@ -110,7 +111,7 @@ class NetworkEnvironment(dict):
         # apply resource registry update for EXTERNAL_RESOURCES
         self._config_resource_reg(EXTERNAL_RESOURCES, postfix)
 
-        if TENANT_NETWORK in enabled_nets:
+        if TENANT_NETWORK in net_settings.enabled_network_list:
             tenant_range = nets[TENANT_NETWORK]['overcloud_ip_range']
             self[param_def]['TenantAllocationPools'] = \
                 [{'start': str(tenant_range[0]),
@@ -123,7 +124,7 @@ class NetworkEnvironment(dict):
                 postfix = '/tenant.yaml'
 
             tenant_vlan = self._get_vlan(nets[TENANT_NETWORK])
-            if type(tenant_vlan) is int:
+            if isinstance(tenant_vlan, int):
                 self[param_def]['TenantNetworkVlanID'] = tenant_vlan
         else:
             postfix = '/noop.yaml'
@@ -131,7 +132,7 @@ class NetworkEnvironment(dict):
         # apply resource registry update for TENANT_RESOURCES
         self._config_resource_reg(TENANT_RESOURCES, postfix)
 
-        if STORAGE_NETWORK in enabled_nets:
+        if STORAGE_NETWORK in net_settings.enabled_network_list:
             storage_range = nets[STORAGE_NETWORK]['overcloud_ip_range']
             self[param_def]['StorageAllocationPools'] = \
                 [{'start': str(storage_range[0]),
@@ -143,7 +144,7 @@ class NetworkEnvironment(dict):
             else:
                 postfix = '/storage.yaml'
             storage_vlan = self._get_vlan(nets[STORAGE_NETWORK])
-            if type(storage_vlan) is int:
+            if isinstance(storage_vlan, int):
                 self[param_def]['StorageNetworkVlanID'] = storage_vlan
         else:
             postfix = '/noop.yaml'
@@ -151,7 +152,7 @@ class NetworkEnvironment(dict):
         # apply resource registry update for STORAGE_RESOURCES
         self._config_resource_reg(STORAGE_RESOURCES, postfix)
 
-        if API_NETWORK in enabled_nets:
+        if API_NETWORK in net_settings.enabled_network_list:
             api_range = nets[API_NETWORK]['overcloud_ip_range']
             self[param_def]['InternalApiAllocationPools'] = \
                 [{'start': str(api_range[0]),
@@ -163,7 +164,7 @@ class NetworkEnvironment(dict):
             else:
                 postfix = '/internal_api.yaml'
             api_vlan = self._get_vlan(nets[API_NETWORK])
-            if type(api_vlan) is int:
+            if isinstance(api_vlan, int):
                 self[param_def]['InternalApiNetworkVlanID'] = api_vlan
         else:
             postfix = '/noop.yaml'
@@ -184,9 +185,9 @@ class NetworkEnvironment(dict):
                 self[param_def][flag] = True
 
     def _get_vlan(self, network):
-        if type(network['nic_mapping'][CONTROLLER]['vlan']) is int:
+        if isinstance(network['nic_mapping'][CONTROLLER]['vlan'], int):
             return network['nic_mapping'][CONTROLLER]['vlan']
-        elif type(network['nic_mapping'][COMPUTE]['vlan']) is int:
+        elif isinstance(network['nic_mapping'][COMPUTE]['vlan'], int):
             return network['nic_mapping'][COMPUTE]['vlan']
         else:
             return 'native'
diff --git a/lib/python/apex/network_settings.py b/lib/python/apex/network_settings.py
index 951000dc..64065ca7 100644
--- a/lib/python/apex/network_settings.py
+++ b/lib/python/apex/network_settings.py
@@ -14,7 +14,6 @@ import ipaddress
 from copy import copy
 
 from . import ip_utils
-from .common import utils
 from .common.constants import (
     CONTROLLER,
     COMPUTE,
@@ -42,7 +41,7 @@ class NetworkSettings(dict):
     """
     def __init__(self, filename):
         init_dict = {}
-        if type(filename) is str:
+        if isinstance(filename, str):
             with open(filename, 'r') as network_settings_file:
                 init_dict = yaml.safe_load(network_settings_file)
         else:
@@ -55,7 +54,7 @@ class NetworkSettings(dict):
             def merge(pri, sec):
                 for key, val in sec.items():
                     if key in pri:
-                        if type(val) is dict:
+                        if isinstance(val, dict):
                             merge(pri[key], val)
                         # else
                         # do not overwrite what's already there
@@ -71,7 +70,14 @@ class NetworkSettings(dict):
 
     def get_network(self, network):
         if network == EXTERNAL_NETWORK and self['networks'][network]:
-            return self['networks'][network][0]
+            for net in self['networks'][network]:
+                if 'public' in net:
+                    return net
+
+            raise NetworkSettingsException("The external network, "
+                                           "'public', should be defined "
+                                           "when external networks are "
+                                           "enabled")
         else:
             return self['networks'][network]
 
@@ -92,10 +98,7 @@ class NetworkSettings(dict):
                 if _network.get('enabled', True):
                     logging.info("{} enabled".format(network))
                     self._config_required_settings(network)
-                    if network == EXTERNAL_NETWORK:
-                        nicmap = _network['nic_mapping']
-                    else:
-                        nicmap = _network['nic_mapping']
+                    nicmap = _network['nic_mapping']
                     iface = nicmap[CONTROLLER]['members'][0]
                     self._config_ip_range(network=network,
                                           interface=iface,
@@ -137,7 +140,7 @@ class NetworkSettings(dict):
 
             if interfaces:
                 interface = interfaces[0]
-                if type(_role.get('vlan', 'native')) is not int and \
+                if not isinstance(_role.get('vlan', 'native'), int) and \
                    any(y == interface for x, y in self.nics[role].items()):
                     raise NetworkSettingsException(
                         "Duplicate {} already specified for "
@@ -183,7 +186,6 @@ class NetworkSettings(dict):
             ip = ipaddress.ip_address(_network['installer_vm']['ip'])
             nic_if = ip_utils.get_interface(ucloud_if_list[0], ip.version)
             if nic_if:
-                ucloud_if_list = [nic_if]
                 logging.info("{}_bridged_interface: {}".
                              format(network, nic_if))
             else:
@@ -312,16 +314,16 @@ class NetworkSettings(dict):
             flatten lists to delim separated strings
             flatten dics to underscored key names and string values
             """
-            if type(obj) is list:
+            if isinstance(obj, list):
                 return "{}=\'{}\'\n".format(name,
                                             delim.join(map(lambda x: str(x),
                                                            obj)))
-            elif type(obj) is dict:
+            elif isinstance(obj, dict):
                 flat_str = ''
                 for k in obj:
                     flat_str += flatten("{}_{}".format(name, k), obj[k])
                 return flat_str
-            elif type(obj) is str:
+            elif isinstance(obj, str):
                 return "{}='{}'\n".format(name, obj)
             else:
                 return "{}={}\n".format(name, str(obj))