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[vpnservice.git] / interfacemgr / interfacemgr-impl / src / main / java / org / opendaylight / vpnservice / interfacemgr / servicebindings / flowbased / statehelpers / FlowBasedServicesStateUnbindHelper.java

diff --git a/interfacemgr/interfacemgr-impl/src/main/java/org/opendaylight/vpnservice/interfacemgr/servicebindings/flowbased/statehelpers/FlowBasedServicesStateUnbindHelper.java b/interfacemgr/interfacemgr-impl/src/main/java/org/opendaylight/vpnservice/interfacemgr/servicebindings/flowbased/statehelpers/FlowBasedServicesStateUnbindHelper.java
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+++ b/interfacemgr/interfacemgr-impl/src/main/java/org/opendaylight/vpnservice/interfacemgr/servicebindings/flowbased/statehelpers/FlowBasedServicesStateUnbindHelper.java
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+/*
+ * Copyright (c) 2015 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.servicebindings.flowbased.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.servicebindings.flowbased.utilities.FlowBasedServicesUtils;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.InterfaceKey;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.servicebinding.rev151015.service.bindings.ServicesInfo;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.servicebinding.rev151015.service.bindings.services.info.BoundServices;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.math.BigInteger;
+import java.util.ArrayList;
+import java.util.List;
+
+public class FlowBasedServicesStateUnbindHelper {
+    private static final Logger LOG = LoggerFactory.getLogger(FlowBasedServicesStateUnbindHelper.class);
+
+    public static List<ListenableFuture<Void>> unbindServicesFromInterface(Interface ifaceState,
+                                                                           DataBroker dataBroker) {
+        List<ListenableFuture<Void>> futures = new ArrayList<>();
+        WriteTransaction t = dataBroker.newWriteOnlyTransaction();
+
+        ServicesInfo servicesInfo = FlowBasedServicesUtils.getServicesInfoForInterface(ifaceState.getName(), dataBroker);
+        if (servicesInfo == null) {
+            return futures;
+        }
+
+        List<BoundServices> allServices = servicesInfo.getBoundServices();
+        if (allServices == null || allServices.isEmpty()) {
+            return futures;
+        }
+
+        BoundServices highestPriorityBoundService = null;
+        short highestPriority = 0xFF;
+        for (BoundServices boundService : allServices) {
+            if (boundService.getServicePriority() < highestPriority) {
+                highestPriorityBoundService = boundService;
+                highestPriority = boundService.getServicePriority();
+            }
+        }
+
+        InterfaceKey interfaceKey = new InterfaceKey(ifaceState.getName());
+        org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface iface =
+                InterfaceManagerCommonUtils.getInterfaceFromConfigDS(interfaceKey, dataBroker);
+
+        NodeConnectorId nodeConnectorId = FlowBasedServicesUtils.getNodeConnectorIdFromInterface(iface, dataBroker);
+        BigInteger dpId = new BigInteger(IfmUtil.getDpnFromNodeConnectorId(nodeConnectorId));
+        Long lportTag = FlowBasedServicesUtils.getLPortTag(iface, dataBroker);
+
+        FlowBasedServicesUtils.removeIngressFlow(iface, highestPriorityBoundService, dpId,
+                dataBroker, t);
+
+        for (BoundServices boundService : allServices) {
+            if (!boundService.equals(highestPriorityBoundService)) {
+                FlowBasedServicesUtils.removeLPortDispatcherFlow(dpId, iface, boundService, dataBroker, t);
+            }
+        }
+
+        return futures;
+    }
+}
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