public CloudOffer getOfferImmediateLowerAvailabilityOfSameProviderSimilarPerformance(
String modulename, String cloudOffer) {
List<CloudOffer> offers = getCloudOffersForModule(modulename);
CloudOffer currentOffer = getCloudCharacteristicsFromList(offers, cloudOffer);
CloudOffer potentialWorse = null;
for (CloudOffer offer : offers) { // assumed that are ordered in reverse
// order
if (offer.getAvailability() < currentOffer.getAvailability()) {
if (!(offer.getProviderName().equals(currentOffer.getProviderName()))) {
if (potentialWorse == null) { // there was not found any yet
potentialWorse = offer;
} else { // An alternative offer was already found, now check by
// its performance (the less difference)
if (Math.abs(currentOffer.getPerformance() - offer.getPerformance())
< (Math.abs(currentOffer.getPerformance() - potentialWorse.getPerformance()))) {
// Closest difference
potentialWorse = offer;
}
}
}
}
}
return potentialWorse;
}
public boolean existsAlternativeCloudProviderForModuleWithLowerAvailability(
String modulename, String cloudOffer) {
List<CloudOffer> offers = getCloudOffersForModule(modulename);
CloudOffer currentOffer = getCloudCharacteristicsFromList(offers, cloudOffer);
for (CloudOffer offer : offers) {
// series of conditions in AND that I prefer to nest for visibility
if (offer.getAvailability() < currentOffer.getAvailability()) {
if (!(offer.getProviderName().equals(currentOffer.getProviderName()))) {
return true;
}
}
}
return false;
}
/**
* @param modulename
* @param cloudOffer
* @return whether exists a worse offer in terms of performance of the same provider than
* cloudOffer.
*/
public boolean existsOfferWithWorsePerformanceOfSameProvider(
String modulename, String cloudOffer) {
List<CloudOffer> offers = getCloudOffersForModule(modulename);
CloudOffer currentOffer = getCloudCharacteristicsFromList(offers, cloudOffer);
for (CloudOffer offer : offers) {
// series of conditions in AND that I prefer to nest for visibility
if (offer.getPerformance() < currentOffer.getPerformance()) {
if (offer.getProviderName().equals(currentOffer.getProviderName())) {
return true;
}
}
}
return false;
}
/**
* @param modulename
* @param currentCloudOffer
* @return The offer in terms of performance of the same provider that is immediately worse than
* cloudOffer. It is assumed that ArraysOfcloudOffer are ordered by
* "CloudOptionReversePerformanceComparator"
*/
public CloudOffer getOfferImmediateLowerPerformanceOfSameProvider(
String modulename, String cloudOffer) {
List<CloudOffer> offers = getCloudOffersForModule(modulename);
CloudOffer currentOffer = getCloudCharacteristicsFromList(offers, cloudOffer);
for (CloudOffer offer : offers) { // assumed that are ordered in reverse
// order
if (offer.getPerformance() < currentOffer.getPerformance()) {
if (offer.getProviderName().equals(currentOffer.getProviderName())) {
return offer; // The first one in an ordered traverse must be the
// chosen one
}
}
}
return null;
}
/**
* @param modulename
* @param currentCloudOffer
* @return The offer in terms of performance of the same provider that is immediately better than
* cloudOffer. It is assumed that ArraysOfcloudOffer are ordered by
* "CloudOptionReversePerformanceComparator"
*/
public CloudOffer getOfferImmediateHigherPerformanceOfSameProvider(
String modulename, String cloudOffer) {
List<CloudOffer> offers = getCloudOffersForModule(modulename);
CloudOffer currentOffer = getCloudCharacteristicsFromList(offers, cloudOffer);
CloudOffer potentialBetter = null;
for (CloudOffer offer : offers) { // assumed that are ordered in reverse
// order
if (offer.getPerformance() > currentOffer.getPerformance()) {
if (offer.getProviderName().equals(currentOffer.getProviderName())) {
potentialBetter = offer;
}
} else { // not better. So the rest are not better either.
return potentialBetter;
}
}
return potentialBetter;
}
