Bug 5463 : Fixing datapath-id changing behaviour seen while testing with mininet

[vpnservice.git] / interfacemgr / interfacemgr-impl / src / main / java / org / opendaylight / vpnservice / interfacemgr / renderer / ovs / statehelpers / OvsInterfaceTopologyStateUpdateHelper.java

diff --git a/interfacemgr/interfacemgr-impl/src/main/java/org/opendaylight/vpnservice/interfacemgr/renderer/ovs/statehelpers/OvsInterfaceTopologyStateUpdateHelper.java b/interfacemgr/interfacemgr-impl/src/main/java/org/opendaylight/vpnservice/interfacemgr/renderer/ovs/statehelpers/OvsInterfaceTopologyStateUpdateHelper.java
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+/*
+ * Copyright (c) 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.interfacemgr.renderer.ovs.statehelpers;
+
+import com.google.common.util.concurrent.ListenableFuture;
+import org.opendaylight.controller.md.sal.binding.api.DataBroker;
+import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
+import org.opendaylight.vpnservice.interfacemgr.IfmUtil;
+import org.opendaylight.vpnservice.interfacemgr.commons.InterfaceManagerCommonUtils;
+import org.opendaylight.vpnservice.interfacemgr.commons.InterfaceMetaUtils;
+import org.opendaylight.vpnservice.interfacemgr.renderer.ovs.utilities.SouthboundUtils;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.InterfaceKey;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbBridgeAugmentation;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.meta.rev151007.bridge._interface.info.BridgeEntry;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.meta.rev151007.bridge._interface.info.BridgeEntryKey;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.meta.rev151007.bridge._interface.info.bridge.entry.BridgeInterfaceEntry;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.rev150331.IfTunnel;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.math.BigInteger;
+import java.util.ArrayList;
+import java.util.List;
+
+public class OvsInterfaceTopologyStateUpdateHelper {
+    private static final Logger LOG = LoggerFactory.getLogger(OvsInterfaceTopologyStateUpdateHelper.class);
+    /*
+     *  This code is used to handle only a dpnId change scenario for a particular change,
+     * which is not expected to happen in usual cases.
+     */
+    public static List<ListenableFuture<Void>> updateBridgeRefEntry(InstanceIdentifier<OvsdbBridgeAugmentation> bridgeIid,
+                                                                    OvsdbBridgeAugmentation bridgeNew,
+                                                                    OvsdbBridgeAugmentation bridgeOld,
+                                                                    DataBroker dataBroker) {
+        List<ListenableFuture<Void>> futures = new ArrayList<>();
+        WriteTransaction writeTransaction = dataBroker.newWriteOnlyTransaction();
+
+        BigInteger dpnIdNew = IfmUtil.getDpnId(bridgeNew.getDatapathId());
+        BigInteger dpnIdOld = IfmUtil.getDpnId(bridgeOld.getDatapathId());
+
+        //delete bridge reference entry for the old dpn in interface meta operational DS
+        InterfaceMetaUtils.deleteBridgeRefEntry(dpnIdOld, writeTransaction);
+
+        // create bridge reference entry in interface meta operational DS
+        InterfaceMetaUtils.createBridgeRefEntry(dpnIdNew, bridgeIid, writeTransaction);
+
+        // handle pre-provisioning of tunnels for the newly connected dpn
+        BridgeEntry bridgeEntry = InterfaceMetaUtils.getBridgeEntryFromConfigDS(dpnIdNew, dataBroker);
+        if (bridgeEntry == null) {
+            futures.add(writeTransaction.submit());
+            return futures;
+        }
+        SouthboundUtils.addAllPortsToBridge(bridgeEntry, dataBroker, bridgeIid, bridgeNew, writeTransaction);
+
+        futures.add(writeTransaction.submit());
+        return futures;
+    }
+}
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