com.infinities.skyport.distributed.impl.hazelcast.hazeltask.Hazeltask.java Source code

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Here is the source code for com.infinities.skyport.distributed.impl.hazelcast.hazeltask.Hazeltask.java

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/*******************************************************************************
 * Copyright 2015 InfinitiesSoft Solutions Inc.
 *
 * 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.infinities.skyport.distributed.impl.hazelcast.hazeltask;

import static com.google.common.base.Preconditions.checkNotNull;

import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ScheduledExecutorService;

import com.google.common.base.Strings;
import com.hazelcast.core.HazelcastInstance;
import com.infinities.skyport.ServiceProvider;
import com.infinities.skyport.model.PoolConfig;

public class Hazeltask {

    public static final ConcurrentMap<String, HazeltaskInstance> instances = new ConcurrentHashMap<String, HazeltaskInstance>();

    private Hazeltask() {

    }

    public static HazeltaskInstance getInstanceByName(String topology) {
        return instances.get(topology);
    }

    public synchronized static HazeltaskInstance newHazeltaskInstance(String topologyName,
            HazelcastInstance hazelcast, PoolConfig poolConfig, ScheduledExecutorService scheduler,
            ServiceProvider serviceProvider) {
        if (Strings.isNullOrEmpty(topologyName)) {
            throw new NullPointerException(topologyName);
        }
        HazeltaskInstance instance = instances.get(topologyName);
        if (instance == null) {
            checkNotNull(hazelcast, "invalid hazelcast");
            checkNotNull(poolConfig, "invalid poolConfig");
            checkNotNull(scheduler, "invalid scheduler");
            checkNotNull(serviceProvider, "invalid service provider");
            instance = new HazeltaskInstance(topologyName, hazelcast, poolConfig, scheduler, serviceProvider);
            if (instances.putIfAbsent(instance.getTopologyName(), instance) != null) {
                throw new IllegalStateException("An instance for the name " + topologyName + " already exists!");
            }
            instance.start();
        }

        return instance;
    }

}