Bug 5212 - Neutron-mapper has dependency on Ofoverlay renderer

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

diff --git a/neutron-ovsdb/src/main/java/org/opendaylight/groupbasedpolicy/neutron/ovsdb/PortByEndpointListener.java b/neutron-ovsdb/src/main/java/org/opendaylight/groupbasedpolicy/neutron/ovsdb/PortByEndpointListener.java
new file mode 100644 (file)
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--- /dev/null
+++ b/neutron-ovsdb/src/main/java/org/opendaylight/groupbasedpolicy/neutron/ovsdb/PortByEndpointListener.java
@@ -0,0 +1,121 @@
+/*
+ * 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;
+
+import java.util.List;
+
+import org.opendaylight.controller.md.sal.binding.api.DataBroker;
+import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
+import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
+import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.groupbasedpolicy.util.DataStoreHelper;
+import org.opendaylight.groupbasedpolicy.util.DataTreeChangeHandler;
+import org.opendaylight.groupbasedpolicy.util.IidFactory;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.Name;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.UniqueId;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoint.fields.L3Address;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.Endpoint;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.EndpointKey;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.EndpointL3;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.EndpointL3Key;
+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.NeutronByGbpMappings;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.neutron.by.gbp.mappings.PortsByEndpoints;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.neutron.by.gbp.mappings.ports.by.endpoints.PortByEndpoint;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayContext;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayContextBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayL3Context;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayL3ContextBuilder;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.base.Optional;
+
+/**
+ * Listens on PortByEndpoint created events. port-name is augmented to endpoint and endpoint-l3 (IFF
+ * they exist in DS).
+ */
+public class PortByEndpointListener extends DataTreeChangeHandler<PortByEndpoint> {
+
+    private static final Logger LOG = LoggerFactory.getLogger(PortByEndpointListener.class);
+    private static final String TAP = "tap";
+
+    public PortByEndpointListener(DataBroker dataProvider) {
+        super(dataProvider,
+                new DataTreeIdentifier<>(LogicalDatastoreType.OPERATIONAL,
+                        InstanceIdentifier.builder(Mappings.class)
+                            .child(NeutronByGbpMappings.class)
+                            .child(PortsByEndpoints.class)
+                            .child(PortByEndpoint.class)
+                            .build()));
+    }
+
+    @Override
+    protected void onWrite(DataObjectModification<PortByEndpoint> rootNode,
+            InstanceIdentifier<PortByEndpoint> rootIdentifier) {
+        PortByEndpoint portByEp = rootNode.getDataAfter();
+        ReadWriteTransaction rwTx = dataProvider.newReadWriteTransaction();
+
+        final EndpointKey epKey = new EndpointKey(portByEp.getL2Context(), portByEp.getMacAddress());
+        InstanceIdentifier<Endpoint> epIid = IidFactory.endpointIid(epKey);
+        Optional<Endpoint> potentialEp = DataStoreHelper.readFromDs(LogicalDatastoreType.OPERATIONAL, epIid, rwTx);
+        if (!potentialEp.isPresent()) {
+            LOG.warn("PortByEndpoint created notification received but endpoint {} does not exist in DS."
+                    + " port-name was not added.", epKey);
+            rwTx.cancel();
+            return;
+        }
+        Endpoint ep = potentialEp.get();
+        Name portName = createTapPortName(portByEp.getPortId());
+        OfOverlayContext newOfOverlayCtx = new OfOverlayContextBuilder().setPortName(portName).build();
+        rwTx.merge(LogicalDatastoreType.OPERATIONAL, epIid.augmentation(OfOverlayContext.class), newOfOverlayCtx);
+
+        List<L3Address> l3Addresses = ep.getL3Address();
+        if (l3Addresses == null) {
+            LOG.warn("PortByEndpoint created notification received but endpoint {} has no L3 address."
+                    + " port-name was not added.", epKey);
+            rwTx.cancel();
+            return;
+        }
+        L3Address l3Address = l3Addresses.get(0);
+
+        EndpointL3Key l3EpKey = new EndpointL3Key(l3Address.getIpAddress(), l3Address.getL3Context());
+        InstanceIdentifier<EndpointL3> l3EpIid = IidFactory.l3EndpointIid(l3EpKey);
+        Optional<EndpointL3> potentialL3Ep =
+                DataStoreHelper.readFromDs(LogicalDatastoreType.OPERATIONAL, l3EpIid, rwTx);
+        if (!potentialL3Ep.isPresent()) {
+            LOG.warn("PortByEndpoint created notification received but L3 endpoint {} does not exist in DS."
+                    + " port-name was not added.", l3EpKey);
+            rwTx.cancel();
+            return;
+        }
+        OfOverlayL3Context newOfOverlayL3Ctx = new OfOverlayL3ContextBuilder().setPortName(portName).build();
+        rwTx.merge(LogicalDatastoreType.OPERATIONAL, l3EpIid.augmentation(OfOverlayL3Context.class), newOfOverlayL3Ctx);
+
+        DataStoreHelper.submitToDs(rwTx);
+    }
+
+    @Override
+    protected void onDelete(DataObjectModification<PortByEndpoint> rootNode,
+            InstanceIdentifier<PortByEndpoint> rootIdentifier) {
+        // NOOP
+    }
+
+    @Override
+    protected void onSubtreeModified(DataObjectModification<PortByEndpoint> rootNode,
+            InstanceIdentifier<PortByEndpoint> rootIdentifier) {
+        // NOOP
+    }
+
+    private static Name createTapPortName(UniqueId portId) {
+        return new Name(TAP + portId.getValue().substring(0, 11));
+    }
+
+}