org.cloudsimplus.vmtemplates.AwsEc2Template Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of cloudsim-plus Show documentation
Show all versions of cloudsim-plus Show documentation
CloudSim Plus: A modern, highly extensible and easier-to-use Java 8 Framework for Modeling and Simulation of Cloud Computing Infrastructures and Services
/*
* CloudSim Plus: A modern, highly-extensible and easier-to-use Framework for
* Modeling and Simulation of Cloud Computing Infrastructures and Services.
* http://cloudsimplus.org
*
* Copyright (C) 2015-2018 Universidade da Beira Interior (UBI, Portugal) and
* the Instituto Federal de Educação Ciência e Tecnologia do Tocantins (IFTO, Brazil).
*
* This file is part of CloudSim Plus.
*
* CloudSim Plus is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* CloudSim Plus is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with CloudSim Plus. If not, see For more details, check
* Raysa Oliveira's Master Thesis (only in Portuguese).
*
* @author raysaoliveira
* @see #getInstance(String)
*/
public class AwsEc2Template implements Comparable {
public static final AwsEc2Template NULL = new AwsEc2Template();
private Path path;
private String name;
private int cpus;
private int memoryInMB;
private double pricePerHour;
/**
* Default constructor used to create an {@link AwsEc2Template} instance.
* If you want to get a template from a JSON file,
* you shouldn't call the constructor directly.
* Instead, use some methods such as the {@link #getInstance(String)}.
*
* This constructor is just provided to enable the {@link Gson} object
* to use reflection to instantiate a AwsEc2Template.
*/
public AwsEc2Template(){
}
/**
* A clone constructor which receives an {@link AwsEc2Template}
* and creates a clone of it.
* @param source the {@link AwsEc2Template} to be cloned
*/
public AwsEc2Template(final AwsEc2Template source){
this.name = source.name;
this.cpus = source.cpus;
this.memoryInMB = source.memoryInMB;
this.pricePerHour = source.pricePerHour;
this.path = Paths.get(source.path.toUri());
}
/**
* Instantiates an AWS EC2 Instance from a JSON file.
*
* @param jsonFilePath the full path to the JSON file representing the template with
* configurations for an AWS EC2 Instance
*/
public AwsEc2Template(final String jsonFilePath) {
this(getInstance(jsonFilePath, ResourceLoader.getFileReader(jsonFilePath)));
}
/**
* Gets an AWS EC2 Instance from a JSON file inside the application's resource directory.
* Use the available constructors if you want to load a file outside the resource directory.
*
* @param jsonFilePath the relative path to the JSON file representing the template with
* configurations for an AWS EC2 Instance
* @return the AWS EC2 Instance from the JSON file
*/
public static AwsEc2Template getInstance(final String jsonFilePath) {
final InputStreamReader reader = new InputStreamReader(ResourceLoader.getInputStream(AwsEc2Template.class, jsonFilePath));
return getInstance(jsonFilePath, reader);
}
/**
* Gets an AWS EC2 Instance from a JSON file.
* @param jsonFilePath the relative path to the JSON file representing the template with
* configurations for an AWS EC2 Instance
* @param reader a {@link InputStreamReader} to read the file
* @return the AWS EC2 Instance from the JSON file
*/
private static AwsEc2Template getInstance(final String jsonFilePath, final InputStreamReader reader) {
final AwsEc2Template template = new Gson().fromJson(reader, AwsEc2Template.class);
template.path = Paths.get(jsonFilePath);
return template;
}
public String getName() {return name; }
public void setName(final String name) {
this.name = name;
}
public int getCpus() {
return cpus;
}
public void setCpus(final int cpus) {
this.cpus = cpus;
}
public int getMemoryInMB() {
return memoryInMB;
}
public void setMemoryInMB(final int memoryInMB) {
this.memoryInMB = memoryInMB;
}
/**
* Gets the price per hour of a VM created from this template
* @return
*/
public double getPricePerHour() {
return pricePerHour;
}
public void setPricePerHour(final double pricePerHour) {
this.pricePerHour = pricePerHour;
}
/**
* Gets the full path to the JSON template file used to create this template.
* @return
*/
public String getFilePath() {
return path.toAbsolutePath().toString();
}
/**
* Gets only the name of the JSON template file used to create this template,
* without the path.
* @return
*/
public String getFileName(){
return path.getFileName().toString();
}
@Override
public String toString() {
return "AwsEc2Template {name = " + name +
", cpus = " + cpus +
", memoryInMB = " + memoryInMB +
", pricePerHour = " + pricePerHour +'}';
}
@Override
public int compareTo(final AwsEc2Template o) {
int comparison = Double.compare(this.cpus, o.cpus);
if(comparison != 0){
return comparison;
}
comparison = Double.compare(this.memoryInMB, o.memoryInMB);
if(comparison != 0){
return comparison;
}
comparison = Double.compare(this.pricePerHour, o.pricePerHour);
return comparison;
}
/**
* A main method just to try the class implementation.
* @param args
*/
public static void main(String[] args) {
final String file = "vmtemplates/aws/t2.nano.json";
final AwsEc2Template template = AwsEc2Template.getInstance(file);
System.out.println("Template file: " + file);
System.out.println(template);
}
}