Adding neutron-ovsdb.

[groupbasedpolicy.git] / neutron-ovsdb / src / main / java / org / opendaylight / groupbasedpolicy / neutron / ovsdb / util / NeutronHelper.java

diff --git a/neutron-ovsdb/src/main/java/org/opendaylight/groupbasedpolicy/neutron/ovsdb/util/NeutronHelper.java b/neutron-ovsdb/src/main/java/org/opendaylight/groupbasedpolicy/neutron/ovsdb/util/NeutronHelper.java
new file mode 100644 (file)
index 0000000..2b83098
--- /dev/null
+++ b/neutron-ovsdb/src/main/java/org/opendaylight/groupbasedpolicy/neutron/ovsdb/util/NeutronHelper.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.opendaylight.groupbasedpolicy.neutron.ovsdb.util;
+
+import static org.opendaylight.groupbasedpolicy.neutron.ovsdb.util.DataStore.readFromDs;
+
+import org.opendaylight.controller.md.sal.binding.api.DataBroker;
+import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.UniqueId;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.Uuid;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.EndpointKey;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.Mappings;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.GbpByNeutronMappings;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.gbp.by.neutron.mappings.EndpointsByPorts;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.gbp.by.neutron.mappings.endpoints.by.ports.EndpointByPort;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.gbp.by.neutron.mappings.endpoints.by.ports.EndpointByPortKey;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+import com.google.common.base.Optional;
+
+public class NeutronHelper {
+
+    /**
+     * This looks up the Endpoint L2 key from an
+     * operational data store kept in neutron-mapper
+     *
+     * @param externalId The neutron port UUID
+     * @param dataBroker {@link DataBroker} to use for the transaction
+     * @return {@link EndpointKey} of the matching Endpoint, null if not found
+     */
+    public static EndpointKey getEpKeyFromNeutronMapper(Uuid externalId, DataBroker dataBroker) {
+
+        ReadWriteTransaction transaction = dataBroker.newReadWriteTransaction();
+        InstanceIdentifier<EndpointByPort> iid = InstanceIdentifier
+                .create(Mappings.class)
+                .child(GbpByNeutronMappings.class)
+                .child(EndpointsByPorts.class)
+                .child(EndpointByPort.class, new EndpointByPortKey(new UniqueId(externalId)));
+        Optional<EndpointByPort> optionalEp = readFromDs(LogicalDatastoreType.OPERATIONAL, iid, transaction );
+        if (optionalEp.isPresent()) {
+            EndpointByPort epByPort = optionalEp.get();
+            return new EndpointKey(epByPort.getL2Context(), epByPort.getMacAddress());
+        }
+        return null;
+    }
+
+
+}