opendaylight/md-sal/sal-remoterpc-connector/src/main/java/org/opendaylight/controller/remote/rpc/registry/ActionRoutingTable.java

   1 /*
   2  * Copyright (c) 2019 Nordix Foundation.  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.controller.remote.rpc.registry;
   9
  10 import akka.actor.ActorRef;
  11 import akka.serialization.JavaSerializer;
  12 import akka.serialization.Serialization;
  13 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
  14 import java.io.Externalizable;
  15 import java.io.IOException;
  16 import java.io.InvalidObjectException;
  17 import java.io.ObjectInput;
  18 import java.io.ObjectOutput;
  19 import java.util.ArrayList;
  20 import java.util.Collection;
  21 import java.util.HashSet;
  22 import java.util.Set;
  23 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  24 import org.opendaylight.mdsal.dom.api.DOMActionInstance;
  25 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  26 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  27 import org.opendaylight.yangtools.yang.data.codec.binfmt.NormalizedNodeDataInput;
  28 import org.opendaylight.yangtools.yang.data.codec.binfmt.NormalizedNodeDataOutput;
  29 import org.opendaylight.yangtools.yang.data.codec.binfmt.NormalizedNodeStreamVersion;
  30 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier;
  31 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Absolute;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 public final class ActionRoutingTable extends AbstractRoutingTable<ActionRoutingTable, DOMActionInstance> {
  36     private static final class Proxy implements Externalizable {
  37         private static final long serialVersionUID = 1L;
  38         private static final Logger LOG = LoggerFactory.getLogger(ActionRoutingTable.class);
  39
  40         @SuppressFBWarnings(value = "SE_BAD_FIELD", justification = "We deal with the field in serialization methods.")
  41         private Collection<DOMActionInstance> actions;
  42         private ActorRef opsInvoker;
  43
  44         // checkstyle flags the public modifier as redundant however it is explicitly needed for Java serialization to
  45         // be able to create instances via reflection.
  46         @SuppressWarnings("checkstyle:RedundantModifier")
  47         public Proxy() {
  48             // For Externalizable
  49         }
  50
  51         Proxy(final ActionRoutingTable table) {
  52             actions = table.getItems();
  53             opsInvoker = table.getInvoker();
  54         }
  55
  56         @Override
  57         public void writeExternal(final ObjectOutput out) throws IOException {
  58             LOG.debug("serializing ActionRoutingTable.");
  59             out.writeObject(Serialization.serializedActorPath(opsInvoker));
  60
  61             final NormalizedNodeDataOutput nnout = NormalizedNodeStreamVersion.current().newDataOutput(out);
  62             nnout.writeInt(actions.size());
  63             for (DOMActionInstance id : actions) {
  64                 final Absolute type = id.getType();
  65                 nnout.writeSchemaNodeIdentifier(type);
  66                 nnout.writeYangInstanceIdentifier(YangInstanceIdentifier.create(new NodeIdentifier(
  67                     type.lastNodeIdentifier())));
  68             }
  69         }
  70
  71         @Override
  72         public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
  73             LOG.debug("deserializing ActionRoutingTable");
  74             opsInvoker = JavaSerializer.currentSystem().value().provider().resolveActorRef((String) in.readObject());
  75
  76             final NormalizedNodeDataInput nnin = NormalizedNodeDataInput.newDataInput(in);
  77             final int size = nnin.readInt();
  78             actions = new ArrayList<>(size);
  79             for (int i = 0; i < size; ++i) {
  80                 final SchemaNodeIdentifier sni = nnin.readSchemaNodeIdentifier();
  81                 if (!(sni instanceof Absolute)) {
  82                     throw new InvalidObjectException("Non-absolute type " + sni);
  83                 }
  84
  85                 actions.add(DOMActionInstance.of((Absolute) sni, LogicalDatastoreType.OPERATIONAL,
  86                         nnin.readYangInstanceIdentifier()));
  87             }
  88         }
  89
  90         private Object readResolve() {
  91             return new ActionRoutingTable(opsInvoker, actions);
  92         }
  93     }
  94
  95     private static final long serialVersionUID = 1L;
  96     private static final Logger LOG = LoggerFactory.getLogger(ActionRoutingTable.class);
  97
  98     ActionRoutingTable(final ActorRef invoker, final Collection<DOMActionInstance> actions) {
  99         super(invoker, actions);
 100     }
 101
 102     ActionRoutingTable updateActions(final Collection<DOMActionInstance> toAdd,
 103                                      final Collection<DOMActionInstance> toRemove) {
 104         LOG.debug("Updating actions in ActionRoutingTable");
 105         final Set<DOMActionInstance> newActions = new HashSet<>(getItems());
 106         newActions.addAll(toAdd);
 107         newActions.removeAll(toRemove);
 108         return new ActionRoutingTable(getInvoker(), newActions);
 109     }
 110
 111     @Override
 112     Object writeReplace() {
 113         return new Proxy(this);
 114     }
 115 }