opendaylight/md-sal/cds-access-api/src/main/java/org/opendaylight/controller/cluster/access/concepts/FrontendIdentifier.java

   1 /*
   2  * Copyright (c) 2016 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.controller.cluster.access.concepts;
   9
  10 import com.google.common.annotations.Beta;
  11 import com.google.common.base.MoreObjects;
  12 import com.google.common.base.Preconditions;
  13 import java.io.DataInput;
  14 import java.io.DataOutput;
  15 import java.io.Externalizable;
  16 import java.io.IOException;
  17 import java.io.ObjectInput;
  18 import java.io.ObjectOutput;
  19 import java.util.Objects;
  20 import org.opendaylight.yangtools.concepts.WritableIdentifier;
  21
  22 /**
  23  * A cluster-wide unique identifier of a frontend type located at a cluster member.
  24  *
  25  * @author Robert Varga
  26  */
  27 @Beta
  28 public final class FrontendIdentifier implements WritableIdentifier {
  29     private static final class Proxy implements Externalizable {
  30         private static final long serialVersionUID = 1L;
  31         private MemberName memberName;
  32         private FrontendType clientType;
  33
  34         public Proxy() {
  35             // Needed for Externalizable
  36         }
  37
  38         Proxy(final MemberName memberName, final FrontendType clientType) {
  39             this.memberName = Preconditions.checkNotNull(memberName);
  40             this.clientType = Preconditions.checkNotNull(clientType);
  41         }
  42
  43         @Override
  44         public void writeExternal(final ObjectOutput out) throws IOException {
  45             memberName.writeTo(out);
  46             clientType.writeTo(out);
  47         }
  48
  49         @Override
  50         public void readExternal(final ObjectInput in) throws IOException {
  51             memberName = MemberName.readFrom(in);
  52             clientType = FrontendType.readFrom(in);
  53         }
  54
  55         private Object readResolve() {
  56             return new FrontendIdentifier(memberName, clientType);
  57         }
  58     }
  59
  60     private static final long serialVersionUID = 1L;
  61     private final MemberName memberName;
  62     private final FrontendType clientType;
  63
  64     FrontendIdentifier(final MemberName memberName, final FrontendType clientType) {
  65         this.clientType = Preconditions.checkNotNull(clientType);
  66         this.memberName = Preconditions.checkNotNull(memberName);
  67     }
  68
  69     public static FrontendIdentifier create(final MemberName memberName, final FrontendType clientType) {
  70         return new FrontendIdentifier(memberName, clientType);
  71     }
  72
  73     public static FrontendIdentifier readFrom(final DataInput in) throws IOException {
  74         final MemberName memberName = MemberName.readFrom(in);
  75         final FrontendType clientType = FrontendType.readFrom(in);
  76         return new FrontendIdentifier(memberName, clientType);
  77     }
  78
  79     @Override
  80     public void writeTo(final DataOutput out) throws IOException {
  81         memberName.writeTo(out);
  82         clientType.writeTo(out);
  83     }
  84
  85     public FrontendType getClientType() {
  86         return clientType;
  87     }
  88
  89     public MemberName getMemberName() {
  90         return memberName;
  91     }
  92
  93     @Override
  94     public int hashCode() {
  95         return Objects.hash(memberName, clientType);
  96     }
  97
  98     @Override
  99     public boolean equals(final Object o) {
 100         if (this == o) {
 101             return true;
 102         }
 103         if (!(o instanceof FrontendIdentifier)) {
 104             return false;
 105         }
 106
 107         final FrontendIdentifier other = (FrontendIdentifier) o;
 108         return memberName.equals(other.memberName) && clientType.equals(other.clientType);
 109     }
 110
 111     @Override
 112     public String toString() {
 113         return MoreObjects.toStringHelper(FrontendIdentifier.class).add("member", memberName)
 114                 .add("clientType", clientType).toString();
 115     }
 116
 117     private Object writeReplace() {
 118         return new Proxy(memberName, clientType);
 119     }
 120 }