openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/registry/flow/DeviceFlowRegistryImpl.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, 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 package org.opendaylight.openflowplugin.impl.registry.flow;
   9
  10 import com.romix.scala.collection.concurrent.TrieMap;
  11 import java.util.Collection;
  12 import java.util.Collections;
  13 import java.util.HashSet;
  14 import java.util.Map;
  15 import java.util.concurrent.ConcurrentMap;
  16 import javax.annotation.concurrent.GuardedBy;
  17 import org.opendaylight.openflowplugin.api.openflow.registry.flow.DeviceFlowRegistry;
  18 import org.opendaylight.openflowplugin.api.openflow.registry.flow.FlowDescriptor;
  19 import org.opendaylight.openflowplugin.api.openflow.registry.flow.FlowRegistryKey;
  20 import org.opendaylight.openflowplugin.impl.util.FlowUtil;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowId;
  22 import org.slf4j.Logger;
  23 import org.slf4j.LoggerFactory;
  24
  25 /**
  26  * Created by Martin Bobak &lt;mbobak@cisco.com&gt; on 8.4.2015.
  27  */
  28 public class DeviceFlowRegistryImpl implements DeviceFlowRegistry {
  29     private static final Logger LOG = LoggerFactory.getLogger(DeviceFlowRegistryImpl.class);
  30
  31     private final ConcurrentMap<FlowRegistryKey, FlowDescriptor> flowRegistry = new TrieMap<>();
  32     @GuardedBy("marks")
  33     private final Collection<FlowRegistryKey> marks = new HashSet<>();
  34
  35     @Override
  36     public FlowDescriptor retrieveIdForFlow(final FlowRegistryKey flowRegistryKey) {
  37         FlowDescriptor flowDescriptor = flowRegistry.get(flowRegistryKey);
  38         return flowDescriptor;
  39     }
  40
  41     @Override
  42     public void store(final FlowRegistryKey flowRegistryKey, final FlowDescriptor flowDescriptor) {
  43         LOG.trace("Storing flowDescriptor with table ID : {} and flow ID : {} for flow hash : {}", flowDescriptor.getTableKey().getId(), flowDescriptor.getFlowId().getValue(), flowRegistryKey.hashCode());
  44         flowRegistry.put(flowRegistryKey, flowDescriptor);
  45     }
  46
  47     @Override
  48     public FlowId storeIfNecessary(final FlowRegistryKey flowRegistryKey, final short tableId) {
  49         final FlowId alienFlowId = FlowUtil.createAlienFlowId(tableId);
  50         final FlowDescriptor alienFlowDescriptor = FlowDescriptorFactory.create(tableId, alienFlowId);
  51
  52         final FlowDescriptor previous = flowRegistry.putIfAbsent(flowRegistryKey, alienFlowDescriptor);
  53         if (previous == null) {
  54             LOG.trace("Flow descriptor for flow hash {} wasn't found.", flowRegistryKey.hashCode());
  55             return alienFlowId;
  56         } else {
  57             return previous.getFlowId();
  58         }
  59     }
  60
  61     @Override
  62     public void markToBeremoved(final FlowRegistryKey flowRegistryKey) {
  63         synchronized (marks) {
  64             marks.add(flowRegistryKey);
  65         }
  66         LOG.trace("Flow hash {} was marked for removal.", flowRegistryKey.hashCode());
  67     }
  68
  69     @Override
  70     public void removeMarked() {
  71         synchronized (marks) {
  72             for (FlowRegistryKey flowRegistryKey : marks) {
  73                 LOG.trace("Removing flowDescriptor for flow hash : {}", flowRegistryKey.hashCode());
  74                 flowRegistry.remove(flowRegistryKey);
  75             }
  76
  77             marks.clear();
  78         }
  79     }
  80
  81     @Override
  82     public Map<FlowRegistryKey, FlowDescriptor> getAllFlowDescriptors() {
  83         return Collections.unmodifiableMap(flowRegistry);
  84     }
  85
  86     @Override
  87     public void close() {
  88         flowRegistry.clear();
  89         marks.clear();
  90     }
  91 }