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.Preconditions;
  12 import java.io.DataInput;
  13 import java.io.DataOutput;
  14 import java.io.Externalizable;
  15 import java.io.IOException;
  16 import java.io.ObjectInput;
  17 import java.io.ObjectOutput;
  18 import java.util.Objects;
  19 import org.opendaylight.yangtools.concepts.WritableIdentifier;
  20
  21 /**
  22  * A cluster-wide unique identifier of a frontend type located at a cluster member.
  23  *
  24  * @author Robert Varga
  25  */
  26 @Beta
  27 public final class FrontendIdentifier implements WritableIdentifier {
  28     private static final class Proxy implements Externalizable {
  29         private static final long serialVersionUID = 1L;
  30         private MemberName memberName;
  31         private FrontendType clientType;
  32
  33         public Proxy() {
  34             // Needed for Externalizable
  35         }
  36
  37         Proxy(final MemberName memberName, final FrontendType clientType) {
  38             this.memberName = Preconditions.checkNotNull(memberName);
  39             this.clientType = Preconditions.checkNotNull(clientType);
  40         }
  41
  42         @Override
  43         public void writeExternal(final ObjectOutput out) throws IOException {
  44             memberName.writeTo(out);
  45             clientType.writeTo(out);
  46         }
  47
  48         @Override
  49         public void readExternal(final ObjectInput in) throws IOException {
  50             memberName = MemberName.readFrom(in);
  51             clientType = FrontendType.readFrom(in);
  52         }
  53
  54         private Object readResolve() {
  55             return new FrontendIdentifier(memberName, clientType);
  56         }
  57     }
  58
  59     private static final long serialVersionUID = 1L;
  60     private final MemberName memberName;
  61     private final FrontendType clientType;
  62
  63     FrontendIdentifier(final MemberName memberName, final FrontendType clientType) {
  64         this.clientType = Preconditions.checkNotNull(clientType);
  65         this.memberName = Preconditions.checkNotNull(memberName);
  66     }
  67
  68     public static FrontendIdentifier create(final MemberName memberName, final FrontendType clientType) {
  69         return new FrontendIdentifier(memberName, clientType);
  70     }
  71
  72     public static FrontendIdentifier readFrom(final DataInput in) throws IOException {
  73         final MemberName memberName = MemberName.readFrom(in);
  74         final FrontendType clientType = FrontendType.readFrom(in);
  75         return new FrontendIdentifier(memberName, clientType);
  76     }
  77
  78     @Override
  79     public void writeTo(final DataOutput out) throws IOException {
  80         memberName.writeTo(out);
  81         clientType.writeTo(out);
  82     }
  83
  84     public FrontendType getClientType() {
  85         return clientType;
  86     }
  87
  88     public MemberName getMemberName() {
  89         return memberName;
  90     }
  91
  92     @Override
  93     public int hashCode() {
  94         return Objects.hash(memberName, clientType);
  95     }
  96
  97     @Override
  98     public boolean equals(final Object o) {
  99         if (this == o) {
 100             return true;
 101         }
 102         if (!(o instanceof FrontendIdentifier)) {
 103             return false;
 104         }
 105
 106         final FrontendIdentifier other = (FrontendIdentifier) o;
 107         return memberName.equals(other.memberName) && clientType.equals(other.clientType);
 108     }
 109
 110     public String toPersistentId() {
 111         return memberName.getName() + "-frontend-" + clientType.getName();
 112     }
 113
 114     @Override
 115     public String toString() {
 116         return toPersistentId();
 117     }
 118
 119     private Object writeReplace() {
 120         return new Proxy(memberName, clientType);
 121     }
 122 }