applications/of-switch-config-pusher/src/main/java/org/opendaylight/openflowplugin/openflow/ofswitch/config/DefaultConfigPusher.java

   1 /**
   2  * Copyright (c) 2014, 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.openflow.ofswitch.config;
  10
  11 import java.util.Collection;
  12 import java.util.concurrent.Future;
  13 import javax.annotation.Nonnull;
  14 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  15 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification.ModificationType;
  16 import org.opendaylight.controller.md.sal.binding.api.DataTreeChangeListener;
  17 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
  18 import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
  19 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  20 import org.opendaylight.infrautils.utils.concurrent.JdkFutures;
  21 import org.opendaylight.openflowplugin.api.OFConstants;
  22 import org.opendaylight.openflowplugin.common.wait.SimpleTaskRetryLooper;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.module.config.rev141015.NodeConfigService;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.module.config.rev141015.SetConfigInputBuilder;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.module.config.rev141015.SetConfigOutput;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.SwitchConfigFlag;
  31 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  32 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  33 import org.opendaylight.yangtools.yang.common.RpcResult;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 public class DefaultConfigPusher implements AutoCloseable, DataTreeChangeListener<FlowCapableNode> {
  38     private static final Logger LOG = LoggerFactory.getLogger(DefaultConfigPusher.class);
  39     private static final long STARTUP_LOOP_TICK = 500L;
  40     private static final int STARTUP_LOOP_MAX_RETRIES = 8;
  41     private final NodeConfigService nodeConfigService;
  42     private final DataBroker dataBroker;
  43     private ListenerRegistration<?> listenerRegistration;
  44
  45     public DefaultConfigPusher(NodeConfigService nodeConfigService, DataBroker dataBroker) {
  46         this.nodeConfigService = nodeConfigService;
  47         this.dataBroker = dataBroker;
  48     }
  49
  50     @SuppressWarnings("checkstyle:IllegalCatch")
  51     public void start() {
  52         try {
  53             final InstanceIdentifier<FlowCapableNode> path = InstanceIdentifier.create(Nodes.class).child(Node.class)
  54                     .augmentation(FlowCapableNode.class);
  55             final DataTreeIdentifier<FlowCapableNode> identifier = new DataTreeIdentifier<>(
  56                     LogicalDatastoreType.OPERATIONAL, path);
  57             final SimpleTaskRetryLooper looper = new SimpleTaskRetryLooper(STARTUP_LOOP_TICK, STARTUP_LOOP_MAX_RETRIES);
  58             listenerRegistration = looper.loopUntilNoException(
  59                 () -> dataBroker.registerDataTreeChangeListener(identifier, DefaultConfigPusher.this));
  60         } catch (Exception e) {
  61             LOG.error("DataTreeChangeListener registration failed: {}", e);
  62             throw new IllegalStateException("DefaultConfigPusher startup failed!", e);
  63         }
  64         LOG.info("DefaultConfigPusher has started.");
  65     }
  66
  67     @Override
  68     public void close() {
  69         if (listenerRegistration != null) {
  70             listenerRegistration.close();
  71         }
  72     }
  73
  74     @Override
  75     public void onDataTreeChanged(@Nonnull final Collection<DataTreeModification<FlowCapableNode>> modifications) {
  76         for (DataTreeModification<FlowCapableNode> modification : modifications) {
  77             if (modification.getRootNode().getModificationType() == ModificationType.WRITE) {
  78                 SetConfigInputBuilder setConfigInputBuilder = new SetConfigInputBuilder();
  79                 setConfigInputBuilder.setFlag(SwitchConfigFlag.FRAGNORMAL.toString());
  80                 setConfigInputBuilder.setMissSearchLength(OFConstants.OFPCML_NO_BUFFER);
  81                 setConfigInputBuilder.setNode(new NodeRef(modification.getRootPath()
  82                         .getRootIdentifier().firstIdentifierOf(Node.class)));
  83                 final Future<RpcResult<SetConfigOutput>> resultFuture =
  84                         nodeConfigService.setConfig(setConfigInputBuilder.build());
  85                 JdkFutures.addErrorLogging(resultFuture, LOG, "addFlow");
  86             }
  87         }
  88     }
  89
  90 }