?? roundrobinloadbalancer.java
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// SMSLib for Java v3
// A Java API library for sending and receiving SMS via a GSM modem
// or other supported gateways.
// Web Site: http://www.smslib.org
//
// Copyright (C) 2002-2009, Thanasis Delenikas, Athens/GREECE.
// SMSLib is distributed under the terms of the Apache License version 2.0
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package org.smslib.balancing;
import java.util.ArrayList;
import org.smslib.AGateway;
import org.smslib.OutboundMessage;
import org.smslib.Service;
/**
* RoundRobinLoadBalancer is forwarding messages via each gateway in turns. This
* is the default SMSLib load balancer.
*/
public final class RoundRobinLoadBalancer extends LoadBalancer
{
private int currentGateway;
public RoundRobinLoadBalancer(Service myService)
{
super(myService);
this.currentGateway = 0;
}
/**
* This Load Balancing implementation returns every other available gateway
* on each invocation.
*/
@Override
public AGateway balance(OutboundMessage msg, ArrayList<AGateway> candidates)
{
if (this.currentGateway >= candidates.size()) this.currentGateway = 0;
return (candidates.get(this.currentGateway++));
}
}
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