com.hpe.caf.api.autoscale.InstanceInfo Maven / Gradle / Ivy
/*
* Copyright 2015-2017 Hewlett Packard Enterprise Development LP.
*
* 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.hpe.caf.api.autoscale;
import java.util.Collection;
import java.util.Collections;
import java.util.Objects;
/**
* Contains information about the instances of a currently running service.
*/
public final class InstanceInfo
{
private final int instancesRunning;
private final int instancesStaging;
private final Collection hosts;
public InstanceInfo(final int running, final int staging, final Collection hosts)
{
this.instancesRunning = running;
this.instancesStaging = staging;
this.hosts = Collections.unmodifiableCollection(Objects.requireNonNull(hosts));
}
/**
* @return the number of instances of a service that are running and active
*/
public int getInstancesRunning()
{
return instancesRunning;
}
/**
* @return the number of instances of a service that are being prepared to run
*/
public int getInstancesStaging()
{
return instancesStaging;
}
/**
* @return the combination of the number of running instances and those being prepared
*/
public int getTotalInstances()
{
return getInstancesRunning() + getInstancesStaging();
}
/**
* @return the hosts that these instances are running upon
*/
public Collection getHosts()
{
return hosts;
}
}