/*
 * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */

package org.opendaylight.controller.cluster.datastore.identifiers;

import com.google.common.base.Preconditions;

public class ShardIdentifier {
    private final String shardName;
    private final String memberName;
    private final String type;


    public ShardIdentifier(String shardName, String memberName, String type) {

        Preconditions.checkNotNull(shardName, "shardName should not be null");
        Preconditions.checkNotNull(memberName, "memberName should not be null");
        Preconditions.checkNotNull(type, "type should not be null");

        this.shardName = shardName;
        this.memberName = memberName;
        this.type = type;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }

        ShardIdentifier that = (ShardIdentifier) o;

        if (!memberName.equals(that.memberName)) {
            return false;
        }
        if (!shardName.equals(that.shardName)) {
            return false;
        }
        if (!type.equals(that.type)) {
            return false;
        }

        return true;
    }

    @Override
    public int hashCode() {
        int result = shardName.hashCode();
        result = 31 * result + memberName.hashCode();
        result = 31 * result + type.hashCode();
        return result;
    }

    @Override public String toString() {
        StringBuilder builder = new StringBuilder();
        builder.append(memberName).append("-shard-").append(shardName).append("-").append(type);
        return builder.toString();
    }

    public static Builder builder(){
        return new Builder();
    }

    public static class Builder {
        private String shardName;
        private String memberName;
        private String type;

        public ShardIdentifier build(){
            return new ShardIdentifier(shardName, memberName, type);
        }

        public Builder shardName(String shardName){
            this.shardName = shardName;
            return this;
        }

        public Builder memberName(String memberName){
            this.memberName = memberName;
            return this;
        }

        public Builder type(String type){
            this.type = type;
            return this;
        }

    }
}