policyservice/impl/src/main/java/org/opendaylight/netvirt/policyservice/listeners/PolicyNodeListener.java

   1 /*
   2  * Copyright (c) 2017 Hewlett Packard Enterprise, Co. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.netvirt.policyservice.listeners;
  10
  11 import java.math.BigInteger;
  12 import java.util.Collections;
  13 import javax.annotation.PostConstruct;
  14 import javax.inject.Inject;
  15 import javax.inject.Singleton;
  16 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  17 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  18 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  19 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
  20 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  21 import org.opendaylight.genius.mdsalutil.NwConstants;
  22 import org.opendaylight.netvirt.policyservice.util.PolicyServiceFlowUtil;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  26 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 @Singleton
  31 public class PolicyNodeListener extends AsyncDataTreeChangeListenerBase<FlowCapableNode, PolicyNodeListener> {
  32     private static final Logger LOG = LoggerFactory.getLogger(PolicyNodeListener.class);
  33
  34     private final DataBroker dataBroker;
  35     private final PolicyServiceFlowUtil policyFlowUtil;
  36
  37     @Inject
  38     public PolicyNodeListener(final DataBroker dataBroker, final PolicyServiceFlowUtil policyFlowUtil) {
  39         this.dataBroker = dataBroker;
  40         this.policyFlowUtil = policyFlowUtil;
  41     }
  42
  43     @Override
  44     @PostConstruct
  45     public void init() {
  46         LOG.info("init");
  47         registerListener(LogicalDatastoreType.OPERATIONAL, dataBroker);
  48     }
  49
  50     @Override
  51     protected PolicyNodeListener getDataTreeChangeListener() {
  52         return this;
  53     }
  54
  55     @Override
  56     protected InstanceIdentifier<FlowCapableNode> getWildCardPath() {
  57         return InstanceIdentifier.create(Nodes.class).child(Node.class).augmentation(FlowCapableNode.class);
  58     }
  59
  60     @Override
  61     protected void remove(InstanceIdentifier<FlowCapableNode> key, FlowCapableNode flowCapableNode) {
  62
  63     }
  64
  65     @Override
  66     protected void update(InstanceIdentifier<FlowCapableNode> key, FlowCapableNode origFlowCapableNode,
  67             FlowCapableNode updatedFlowCapableNode) {
  68
  69     }
  70
  71     @Override
  72     protected void add(InstanceIdentifier<FlowCapableNode> key, FlowCapableNode flowCapableNode) {
  73         BigInteger dpId = MDSALUtil.getDpnIdFromNodeName(key.firstKeyOf(Node.class).getId());
  74         WriteTransaction tx = dataBroker.newWriteOnlyTransaction();
  75         createTableMissFlow(dpId, NwConstants.EGRESS_POLICY_CLASSIFIER_TABLE,
  76                 NwConstants.EGRESS_POLICY_CLASSIFIER_COOKIE, tx);
  77         createTableMissFlow(dpId, NwConstants.EGRESS_POLICY_ROUTING_TABLE, NwConstants.EGRESS_POLICY_ROUTING_COOKIE,
  78                 tx);
  79         tx.submit();
  80     }
  81
  82     private void createTableMissFlow(BigInteger dpId, short tableId, BigInteger cookie, WriteTransaction tx) {
  83         policyFlowUtil.updateFlowToTx(dpId, tableId, tableId + "_Miss", NwConstants.TABLE_MISS_PRIORITY, cookie,
  84                 Collections.emptyList(), policyFlowUtil.getTableMissInstructions(), NwConstants.ADD_FLOW, tx);
  85     }
  86
  87 }