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Autonomously builds and runs Cloud Computing simulation environments in CloudSim Plus from an YAML file.
/*
* CloudSim Plus Automation: A Human Readable Scenario Specification for Automated Creation of Simulations on CloudSim Plus.
* https://github.com/manoelcampos/CloudSimAutomation
*
* Copyright (C) 2015-2016 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 Automation.
*
* CloudSim Plus Automation 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 Automation 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 Automation. If not, see map = new HashMap<>();
/**
* The base CloudSim package name.
*/
private static final String PKG = "org.cloudbus.cloudsim";
/**
* Try to get a class corresponding to its full name from
* the map of already loaded classes.
* If the class was not loaded yet, try to load
* and return it.
* @param fullClassName the full qualified name of the class (including package name)
* @return the loaded class
*/
private static Class loadClass(final String fullClassName){
Class klass = map.get(fullClassName);
if(klass == null){
try {
klass = (Class) Class.forName(fullClassName);;
map.put(fullClassName, klass);
return klass;
} catch (ClassNotFoundException e) {
Logger.getLogger(PolicyLoader.class.getName()).log(Level.SEVERE, null, e);
throw new RuntimeException(e);
}
}
return klass;
}
public static VmScheduler vmScheduler(final String classSuffix) throws RuntimeException {
try {
final String className = generateFullClassName(PKG+".schedulers.vm","VmScheduler", classSuffix);
Class klass = PolicyLoader.loadClass(className);
Constructor cons = klass.getConstructor(new Class[]{});
return (VmScheduler) cons.newInstance();
} catch (NoSuchMethodException | SecurityException | InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException ex) {
Logger.getLogger(PolicyLoader.class.getName()).log(Level.SEVERE, null, ex);
throw new RuntimeException(ex);
}
}
/**
* Gets an instance of a resource provisioner with a given
* class name information.
*
* @param classPrefix The class prefix for the provisioner.
* If you want to instantiate the provisioner class BwProvisionerSimple,
* the provisioner prefix is "Bw"
* @param classSufix The class suffix of the provisioner.
* If you want to instantiate the provisioner class BwProvisionerSimple,
* the provisioner suffix is just "Simple"
* @return A new instance of the provisioner with the given name.
* For instance, if the class suffix is "Simple",
* returns an instance the ResourceProvisionerSimple class.
* @throws RuntimeException
*/
private static T resourceProvisioner(
final String classPrefix, final String classSufix) throws RuntimeException {
try {
final String className = generateFullProvisionerClassName(classPrefix, classSufix);
Class klass = PolicyLoader.loadClass(className);
Constructor cons = klass.getConstructor(new Class[]{});
return (T)cons.newInstance();
} catch (NoSuchMethodException | SecurityException | InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException ex) {
Logger.getLogger(PolicyLoader.class.getName()).log(Level.SEVERE, null, ex);
throw new RuntimeException(ex);
}
}
public static ResourceProvisioner newResourceProvisioner(final HostRegistry hr) throws RuntimeException {
return resourceProvisioner("", hr.getBwProvisioner());
}
public static PeProvisioner newPeProvisioner(final HostRegistry hr) throws RuntimeException {
return resourceProvisioner("Pe", hr.getPeProvisioner());
}
public static VmAllocationPolicy vmAllocationPolicy(final DatacenterRegistry dcr) throws RuntimeException {
try {
final String className = generateFullClassName(PKG+".allocationpolicies","VmAllocationPolicy", dcr.getVmAllocationPolicy());
Class klass = PolicyLoader.loadClass(className);
Constructor cons = klass.getConstructor(new Class[]{});
return (VmAllocationPolicy) cons.newInstance();
} catch (NoSuchMethodException | SecurityException | InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException ex) {
Logger.getLogger(PolicyLoader.class.getName()).log(Level.SEVERE, null, ex);
throw new RuntimeException(ex);
}
}
public static CloudletScheduler cloudletScheduler(final VmRegistry vmr) throws RuntimeException {
try {
final String className = generateFullClassName(PKG+".schedulers.cloudlet","CloudletScheduler", vmr.getCloudletScheduler());
Class klass = PolicyLoader.loadClass(className);
Constructor cons = klass.getConstructor();
return (CloudletScheduler) cons.newInstance();
} catch (NoSuchMethodException | SecurityException | InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException ex) {
Logger.getLogger(PolicyLoader.class.getName()).log(Level.SEVERE, null, ex);
throw new RuntimeException(ex);
}
}
private static String generateFullClassName(String packageName, String classPrefix, String classSuffix) {
return String.format("%s.%s%s", packageName, classPrefix, classSuffix);
}
private static String generateFullProvisionerClassName(String classPrefix, String classSuffix) {
classPrefix = (classPrefix.isEmpty() ? "ResourceProvisioner" : classPrefix+"Provisioner");
return generateFullClassName(PKG+".provisioners", classPrefix, classSuffix);
}
public static UtilizationModel utilizationModel(final String classSuffix) throws RuntimeException {
try {
final String className = generateFullClassName(PKG+".utilizationmodels", "UtilizationModel", classSuffix);
Class klass = PolicyLoader.loadClass(className);
Constructor cons = klass.getConstructor();
return (UtilizationModel) cons.newInstance();
} catch (NoSuchMethodException | SecurityException | InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException ex) {
Logger.getLogger(PolicyLoader.class.getName()).log(Level.SEVERE, null, ex);
throw new RuntimeException(ex);
}
}
}