com.hazelcast.client.impl.clientside.ClientDiscoveryService Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2020, Hazelcast, Inc. All Rights Reserved.
*
* 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 com.hazelcast.client.impl.clientside;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.NoSuchElementException;
public class ClientDiscoveryService implements Iterator {
private final ArrayList discoveryServices;
private final long size;
private final int configsMaxTryCount;
private long head;
private long currentTryCount;
public ClientDiscoveryService(int configsTryCount, ArrayList discoveryServices) {
this.discoveryServices = discoveryServices;
this.size = discoveryServices.size();
this.configsMaxTryCount = configsTryCount;
}
public void resetSearch() {
currentTryCount = 0;
}
public boolean hasNext() {
return currentTryCount != configsMaxTryCount;
}
public CandidateClusterContext current() {
return discoveryServices.get((int) (head % size));
}
public CandidateClusterContext next() {
if (currentTryCount == configsMaxTryCount) {
throw new NoSuchElementException("Has no alternative cluster");
}
head++;
CandidateClusterContext candidateClusterContext = discoveryServices.get((int) (head % size));
if (head % size == 0) {
currentTryCount++;
}
return candidateClusterContext;
}
@Override
public void remove() {
throw new UnsupportedOperationException("remove");
}
public void shutdown() {
for (CandidateClusterContext discoveryService : discoveryServices) {
discoveryService.getCredentialsFactory().destroy();
}
}
}