Initial commit for NeutronVpn

[vpnservice.git] / neutronvpn / neutronvpn-impl / src / main / java / org / opendaylight / vpnservice / neutronvpn / NeutronSubnetChangeListener.java

diff --git a/neutronvpn/neutronvpn-impl/src/main/java/org/opendaylight/vpnservice/neutronvpn/NeutronSubnetChangeListener.java b/neutronvpn/neutronvpn-impl/src/main/java/org/opendaylight/vpnservice/neutronvpn/NeutronSubnetChangeListener.java
new file mode 100644 (file)
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+++ b/neutronvpn/neutronvpn-impl/src/main/java/org/opendaylight/vpnservice/neutronvpn/NeutronSubnetChangeListener.java
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2015 - 2016 Ericsson India Global Services Pvt Ltd. 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.vpnservice.neutronvpn;
+
+
+import org.opendaylight.controller.md.sal.binding.api.DataBroker;
+import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
+import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.vpnservice.mdsalutil.AbstractDataChangeListener;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.Subnets;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.subnets.Subnet;
+import org.opendaylight.yangtools.concepts.ListenerRegistration;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+public class NeutronSubnetChangeListener extends AbstractDataChangeListener<Subnet> implements AutoCloseable {
+    private static final Logger LOG = LoggerFactory.getLogger(NeutronSubnetChangeListener.class);
+
+    private ListenerRegistration<DataChangeListener> listenerRegistration;
+    private final DataBroker broker;
+    private NeutronvpnManager nvpnManager;
+
+
+    public NeutronSubnetChangeListener(final DataBroker db, NeutronvpnManager nVpnMgr) {
+        super(Subnet.class);
+        broker = db;
+        nvpnManager = nVpnMgr;
+        registerListener(db);
+    }
+
+    @Override
+    public void close() throws Exception {
+        if (listenerRegistration != null) {
+            try {
+                listenerRegistration.close();
+            } catch (final Exception e) {
+                LOG.error("Error when cleaning up DataChangeListener.", e);
+            }
+            listenerRegistration = null;
+        }
+        LOG.info("N_Subnet listener Closed");
+    }
+
+
+    private void registerListener(final DataBroker db) {
+        try {
+            listenerRegistration = db.registerDataChangeListener(LogicalDatastoreType.CONFIGURATION,
+                    InstanceIdentifier.create(Neutron.class).child(Subnets.class).child(Subnet.class),
+                    NeutronSubnetChangeListener.this, DataChangeScope.SUBTREE);
+        } catch (final Exception e) {
+            LOG.error("Neutron Manager Subnet DataChange listener registration fail!", e);
+            throw new IllegalStateException("Neutron Manager Subnet DataChange listener registration failed.", e);
+        }
+    }
+
+    @Override
+    protected void add(InstanceIdentifier<Subnet> identifier, Subnet input) {
+        LOG.trace("Adding Subnet : key: " + identifier + ", value=" + input);
+        nvpnManager.updateSubnetNode(input.getUuid(), input.getTenantId(), input.getNetworkId(), null, null, null);
+    }
+
+    @Override
+    protected void remove(InstanceIdentifier<Subnet> identifier, Subnet input) {
+        LOG.trace("Removing subnet : key: " + identifier + ", value=" + input);
+        Uuid vpnId = NeutronvpnUtils.getVpnForNetwork(broker, input.getNetworkId());
+        if (vpnId != null) {
+            nvpnManager.removeSubnetFromVpn(vpnId, input.getUuid());
+        }
+    }
+
+    @Override
+    protected void update(InstanceIdentifier<Subnet> identifier, Subnet original, Subnet update) {
+        if (LOG.isTraceEnabled()) {
+            LOG.trace("Updating Subnet : key: " + identifier + ", original value=" + original + ", update value=" +
+                    update);
+        }
+        nvpnManager.updateSubnetNode(update.getUuid(), update.getTenantId(), update.getNetworkId(), null, null, null);
+    }
+}