utils/mdsal-openflow/src/main/java/org/opendaylight/ovsdb/utils/mdsal/openflow/FlowUtils.java

   1 /*
   2  * Copyright (c) 2015 Red Hat, Inc. 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.ovsdb.utils.mdsal.openflow;
  10
  11 import com.google.common.base.Optional;
  12 import java.util.concurrent.ExecutionException;
  13 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  14 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.Table;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.TableKey;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.Flow;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.FlowBuilder;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
  26 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 public class FlowUtils {
  31     private static final Logger LOG = LoggerFactory.getLogger(FlowUtils.class);
  32     private static final String OPENFLOW = "openflow";
  33
  34     public static String getNodeName(long dpidLong) {
  35         return OPENFLOW + ":" + dpidLong;
  36     }
  37
  38     public static NodeConnectorId getNodeConnectorId(long ofPort, String nodeName) {
  39         return new NodeConnectorId(nodeName + ":" + ofPort);
  40     }
  41
  42     public static NodeConnectorId getNodeConnectorId(long dpidLong, long ofPort) {
  43         return getNodeConnectorId(ofPort, getNodeName(dpidLong));
  44     }
  45
  46     public static NodeBuilder createNodeBuilder(String nodeId) {
  47         NodeBuilder builder = new NodeBuilder();
  48         builder.setId(new NodeId(nodeId));
  49         builder.setKey(new NodeKey(builder.getId()));
  50         return builder;
  51     }
  52
  53     public static NodeBuilder createNodeBuilder(long dpidLong) {
  54         return createNodeBuilder(getNodeName(dpidLong));
  55     }
  56
  57     public static InstanceIdentifier<Flow> createFlowPath(FlowBuilder flowBuilder, NodeBuilder nodeBuilder) {
  58         return InstanceIdentifier.builder(Nodes.class)
  59                 .child(Node.class, nodeBuilder.getKey())
  60                 .augmentation(FlowCapableNode.class)
  61                 .child(Table.class, new TableKey(flowBuilder.getTableId()))
  62                 .child(Flow.class, flowBuilder.getKey()).build();
  63     }
  64
  65     public static InstanceIdentifier<Node> createNodePath(NodeBuilder nodeBuilder) {
  66         return InstanceIdentifier.builder(Nodes.class).child(Node.class, nodeBuilder.getKey()).build();
  67     }
  68
  69     public static Flow getFlow(FlowBuilder flowBuilder, NodeBuilder nodeBuilder,
  70                                ReadOnlyTransaction readTx, final LogicalDatastoreType store) {
  71         try {
  72             Optional<Flow> data = readTx.read(store, createFlowPath(flowBuilder, nodeBuilder)).get();
  73             if (data.isPresent()) {
  74                 return data.get();
  75             }
  76         } catch (InterruptedException|ExecutionException e) {
  77             LOG.error(e.getMessage(), e);
  78         }
  79
  80         LOG.info("Cannot find data for Flow {}", flowBuilder.getFlowName());
  81         return null;
  82     }
  83 }