[Admin-Util][NSX-v3]: list networks which are missing from backend

To run this: nsxadmin -r networks -o list-mismatches

Positive output example:
All internal networks exist on the NSX manager

Negative output example:
Found 4 internal networks missing from the NSX manager
+---------+--------------------------------------+--------------------------------------+
| name    | neutron_id                           | nsx_id                               |
+---------+--------------------------------------+--------------------------------------+
| net3    | 577eced7-cf03-4048-9b49-5180112137a7 | 731d0a8a-d7ec-4ea5-8852-3825b51a8fd4 |
| private | c42e10e6-a6ab-47b1-869a-b9bc15a86db9 | 92aa4713-bcb9-4248-829b-2e9e907d1c03 |
| net1    | 951039e4-84ca-43a2-a64e-24f37ca7a5ce | d45faea4-1320-4cdd-8bd3-7093afca0e2f |
| net2    | b11685f8-4481-4ee4-aa8c-726f0cdedb13 | 34afd33f-6c01-4ef6-8e25-00cfa3e77fef |
+---------+--------------------------------------+--------------------------------------+

Change-Id: I526c80ce2eb9b49feaed50ce64781b3f7a928b23

vmware_nsx/shell/admin/plugins/common/constants.py

@@ -20,6 +20,9 @@ NSX_INI = '/etc/neutron/plugins/vmware/nsx.ini'
 NSXV3_PLUGIN = 'vmware_nsx.plugin.NsxV3Plugin'
 NSXV_PLUGIN = 'vmware_nsx.plugin.NsxVPlugin'
 
+# Common Resource Constants
+NETWORKS = 'networks'
+
 # NSXV3 Resource Constants
 FIREWALL_SECTIONS = 'firewall-sections'
 FIREWALL_NSX_GROUPS = 'nsx-security-groups'
@@ -32,5 +35,4 @@ DHCP_BINDING = 'dhcp-binding'
 BACKUP_EDGES = 'backup-edges'
 ORPHANED_EDGES = 'orphaned-edges'
 MISSING_EDGES = 'missing-edges'
-NETWORKS = 'networks'
 METADATA = 'metadata'

vmware_nsx/shell/admin/plugins/nsxv3/resources/networks.py

@@ -0,0 +1,75 @@
+# Copyright 2016 VMware, Inc.  All rights reserved.
+#
+#    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.
+
+
+import logging
+
+from vmware_nsx._i18n import _LI
+from vmware_nsx.common import exceptions as nsx_exc
+from vmware_nsx.db import db as nsx_db
+from vmware_nsx.nsxlib import v3 as nsxlib
+from vmware_nsx.shell.admin.plugins.common import constants
+from vmware_nsx.shell.admin.plugins.common import formatters
+from vmware_nsx.shell.admin.plugins.common import utils as admin_utils
+from vmware_nsx.shell import nsxadmin as shell
+
+from neutron.callbacks import registry
+from neutron import context as neutron_context
+from neutron.db import db_base_plugin_v2
+
+LOG = logging.getLogger(__name__)
+
+
+def get_network_nsx_id(context, neutron_id):
+    # get the nsx switch id from the DB mapping
+    mappings = nsx_db.get_nsx_switch_ids(context.session, neutron_id)
+    if mappings and len(mappings) > 0:
+        return mappings[0]
+
+
+@admin_utils.output_header
+def list_missing_networks(resource, event, trigger, **kwargs):
+    """List neutron networks that are missing the NSX backend network
+    """
+    plugin = db_base_plugin_v2.NeutronDbPluginV2()
+    admin_cxt = neutron_context.get_admin_context()
+    neutron_networks = plugin.get_networks(admin_cxt)
+    networks = []
+    for net in neutron_networks:
+        neutron_id = net['id']
+        # get the network nsx id from the mapping table
+        nsx_id = get_network_nsx_id(admin_cxt, neutron_id)
+        if not nsx_id:
+            # skip external networks
+            pass
+        else:
+            try:
+                nsxlib.get_logical_switch(nsx_id)
+            except nsx_exc.ResourceNotFound:
+                networks.append({'name': net['name'],
+                                 'neutron_id': neutron_id,
+                                 'nsx_id': nsx_id})
+    if len(networks) > 0:
+        title = _LI("Found %d internal networks missing from the NSX "
+                    "manager:") % len(networks)
+        LOG.info(formatters.output_formatter(
+            title, networks,
+            ['name', 'neutron_id', 'nsx_id']))
+    else:
+        LOG.info(_LI("All internal networks exist on the NSX manager"))
+
+
+registry.subscribe(list_missing_networks,
+                   constants.NETWORKS,
+                   shell.Operations.LIST_MISMATCHES.value)

vmware_nsx/shell/nsxadmin.py

@@ -82,7 +82,9 @@ nsxv3_resources = {
                                          Operations.NSX_LIST.value,
                                          Operations.NSX_CLEAN.value,
                                          Operations.NEUTRON_LIST.value,
-                                         Operations.NEUTRON_CLEAN.value])
+                                         Operations.NEUTRON_CLEAN.value]),
+    constants.NETWORKS: Resource(constants.NETWORKS,
+                                 [Operations.LIST_MISMATCHES.value])
 }
 
 # Add supported NSX-V resources in this dictionary