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
   9 package org.opendaylight.openflowplugin.impl.registry.flow;
  10
  11 import java.util.Collection;
  12 import java.util.Collections;
  13 import java.util.HashMap;
  14 import java.util.HashSet;
  15 import java.util.Map;
  16 import org.opendaylight.openflowplugin.api.openflow.registry.flow.DeviceFlowRegistry;
  17 import org.opendaylight.openflowplugin.api.openflow.registry.flow.FlowDescriptor;
  18 import org.opendaylight.openflowplugin.api.openflow.registry.flow.FlowRegistryKey;
  19 import org.opendaylight.openflowplugin.impl.util.FlowUtil;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowId;
  21 import org.slf4j.Logger;
  22 import org.slf4j.LoggerFactory;
  23
  24
  25 /**
  26  * Created by Martin Bobak &lt;mbobak@cisco.com&gt; on 8.4.2015.
  27  */
  28 public class DeviceFlowRegistryImpl implements DeviceFlowRegistry {
  29
  30     private final Map<FlowRegistryKey, FlowDescriptor> flowRegistry = new HashMap<>();
  31     private final Collection<FlowRegistryKey> marks = new HashSet<>();
  32     private static final Logger LOG = LoggerFactory.getLogger(DeviceFlowRegistryImpl.class);
  33
  34     @Override
  35     public FlowDescriptor retrieveIdForFlow(final FlowRegistryKey flowRegistryKey) {
  36         FlowDescriptor flowDescriptor = flowRegistry.get(flowRegistryKey);
  37         return flowDescriptor;
  38     }
  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         synchronized (flowRegistry) {
  45             flowRegistry.put(flowRegistryKey, flowDescriptor);
  46         }
  47     }
  48
  49     @Override
  50     public FlowId storeIfNecessary(final FlowRegistryKey flowRegistryKey, final short tableId) {
  51
  52
  53         FlowId alienFlowId = FlowUtil.createAlienFlowId(tableId);
  54         FlowDescriptor alienFlowDescriptor = FlowDescriptorFactory.create(tableId, alienFlowId);
  55         synchronized (flowRegistry) {
  56             FlowDescriptor flowDescriptorFromRegistry = flowRegistry.get(flowRegistryKey);
  57             if (flowDescriptorFromRegistry != null) {
  58                 return flowDescriptorFromRegistry.getFlowId();
  59             } else {
  60                 LOG.trace("Flow descriptor for flow hash {} wasn't found.", flowRegistryKey.hashCode());
  61                 flowRegistry.put(flowRegistryKey, alienFlowDescriptor);
  62                 return alienFlowId;
  63             }
  64         }
  65     }
  66
  67     @Override
  68     public void markToBeremoved(final FlowRegistryKey flowRegistryKey) {
  69         synchronized (marks) {
  70             marks.add(flowRegistryKey);
  71         }
  72         LOG.trace("Flow hash {} was marked for removal.", flowRegistryKey.hashCode());
  73
  74     }
  75
  76     @Override
  77     public void removeMarked() {
  78         synchronized (flowRegistry) {
  79             for (FlowRegistryKey flowRegistryKey : marks) {
  80                 LOG.trace("Removing flowDescriptor for flow hash : {}", flowRegistryKey.hashCode());
  81                 flowRegistry.remove(flowRegistryKey);
  82             }
  83         }
  84         synchronized (marks) {
  85             marks.clear();
  86         }
  87     }
  88
  89
  90     @Override
  91     public Map<FlowRegistryKey, FlowDescriptor> getAllFlowDescriptors() {
  92         return Collections.unmodifiableMap(flowRegistry);
  93     }
  94
  95     @Override
  96     public void close() {
  97         flowRegistry.clear();
  98         marks.clear();
  99     }
 100 }