1 files changed, 160 insertions, 0 deletions
diff --git a/compass-tasks/db/api/network.py b/compass-tasks/db/api/network.py
new file mode 100644
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--- /dev/null
+++ b/compass-tasks/db/api/network.py
@@ -0,0 +1,160 @@
+# Copyright 2014 Huawei Technologies Co. Ltd
+#
+# 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.
+
+"""Network related database operations."""
+import logging
+import netaddr
+import re
+
+from compass.db.api import database
+from compass.db.api import permission
+from compass.db.api import user as user_api
+from compass.db.api import utils
+from compass.db import exception
+from compass.db import models
+
+
+SUPPORTED_FIELDS = ['subnet', 'name']
+RESP_FIELDS = [
+    'id', 'name', 'subnet', 'created_at', 'updated_at'
+]
+ADDED_FIELDS = ['subnet']
+OPTIONAL_ADDED_FIELDS = ['name']
+IGNORE_FIELDS = [
+    'id', 'created_at', 'updated_at'
+]
+UPDATED_FIELDS = ['subnet', 'name']
+
+
+def _check_subnet(subnet):
+    """Check subnet format is correct."""
+    try:
+        netaddr.IPNetwork(subnet)
+    except Exception as error:
+        logging.exception(error)
+        raise exception.InvalidParameter(
+            'subnet %s format unrecognized' % subnet)
+
+
+@utils.supported_filters(optional_support_keys=SUPPORTED_FIELDS)
+@database.run_in_session()
+@user_api.check_user_permission(
+    permission.PERMISSION_LIST_SUBNETS
+)
+@utils.wrap_to_dict(RESP_FIELDS)
+def list_subnets(user=None, session=None, **filters):
+    """List subnets."""
+    return utils.list_db_objects(
+        session, models.Subnet, **filters
+    )
+
+
+def _get_subnet(subnet_id, session=None, **kwargs):
+    """Get subnet by subnet id."""
+    if isinstance(subnet_id, (int, long)):
+        return utils.get_db_object(
+            session, models.Subnet,
+            id=subnet_id, **kwargs
+        )
+    raise exception.InvalidParameter(
+        'subnet id %s type is not int compatible' % subnet_id
+    )
+
+
+@utils.supported_filters([])
+@database.run_in_session()
+@user_api.check_user_permission(
+    permission.PERMISSION_LIST_SUBNETS
+)
+@utils.wrap_to_dict(RESP_FIELDS)
+def get_subnet(
+    subnet_id, exception_when_missing=True,
+    user=None, session=None, **kwargs
+):
+    """Get subnet info."""
+    return _get_subnet(
+        subnet_id, session=session,
+        exception_when_missing=exception_when_missing
+    )
+
+
+@utils.supported_filters(
+    ADDED_FIELDS, optional_support_keys=OPTIONAL_ADDED_FIELDS,
+    ignore_support_keys=IGNORE_FIELDS
+)
+@utils.input_validates(subnet=_check_subnet)
+@database.run_in_session()
+@user_api.check_user_permission(
+    permission.PERMISSION_ADD_SUBNET
+)
+@utils.wrap_to_dict(RESP_FIELDS)
+def add_subnet(
+    exception_when_existing=True, subnet=None,
+    user=None, session=None, **kwargs
+):
+    """Create a subnet."""
+    return utils.add_db_object(
+        session, models.Subnet,
+        exception_when_existing, subnet, **kwargs
+    )
+
+
+@utils.supported_filters(
+    optional_support_keys=UPDATED_FIELDS,
+    ignore_support_keys=IGNORE_FIELDS
+)
+@utils.input_validates(subnet=_check_subnet)
+@database.run_in_session()
+@user_api.check_user_permission(
+    permission.PERMISSION_ADD_SUBNET
+)
+@utils.wrap_to_dict(RESP_FIELDS)
+def update_subnet(subnet_id, user=None, session=None, **kwargs):
+    """Update a subnet."""
+    subnet = _get_subnet(
+        subnet_id, session=session
+    )
+    return utils.update_db_object(session, subnet, **kwargs)
+
+
+def _check_subnet_deletable(subnet):
+    """Check a subnet deletable."""
+    if subnet.host_networks:
+        host_networks = [
+            '%s:%s=%s' % (
+                host_network.host.name, host_network.interface,
+                host_network.ip
+            )
+            for host_network in subnet.host_networks
+        ]
+        raise exception.NotAcceptable(
+            'subnet %s contains host networks %s' % (
+                subnet.subnet, host_networks
+            )
+        )
+
+
+@utils.supported_filters([])
+@database.run_in_session()
+@user_api.check_user_permission(
+    permission.PERMISSION_DEL_SUBNET
+)
+@utils.wrap_to_dict(RESP_FIELDS)
+def del_subnet(subnet_id, user=None, session=None, **kwargs):
+    """Delete a subnet."""
+    subnet = _get_subnet(
+        subnet_id, session=session
+    )
+    _check_subnet_deletable(subnet)
+    return utils.del_db_object(session, subnet)