@Override
public void deallocateHostForVm(Vm vm) {
Host host = getVmTable().remove(vm.getUid());
if (host != null) {
host.vmDestroy(vm);
}
}
/*
* (non-Javadoc)
* @see org.cloudbus.cloudsim.VmAllocationPolicy#allocateHostForVm(org.cloudbus.cloudsim.Vm,
* org.cloudbus.cloudsim.Host)
*/
@Override
public boolean allocateHostForVm(Vm vm, Host host) {
if (host == null) {
Log.formatLine("%.2f: No suitable host found for VM #" + vm.getId() + "\n", CloudSim.clock());
return false;
}
if (host.vmCreate(vm)) { // if vm has been succesfully created in the host
getVmTable().put(vm.getUid(), host);
/*
* update host cache pain information
* in CacheMatrix.HOST_PAIN_LIST
*/
CacheMatrix.update_host_pain_add_vm(vm, host);
/*
* end update host cache pain information
*/
Log.formatLine(
"%.2f: VM #" + vm.getId() + " has been allocated to the host #" + host.getId(),
CloudSim.clock());
return true;
}
Log.formatLine(
"%.2f: Creation of VM #" + vm.getId() + " on the host #" + host.getId() + " failed\n",
CloudSim.clock());
return false;
}
boolean tryToAllocateVmToHost(Host host, Vm vm) {
if (host.isSuitableForVm(vm)) {
boolean result = host.vmCreate(vm);
if (result) {
printLogMsg("Vm created successfuly");
getVmTable().put(vm.getUid(), host);
return true;
} else {
printLogMsg("Vm creation failed");
}
}
return false;
}
/**
* Prints the metric history.
*
* @param hosts the hosts
* @param vmAllocationPolicy the vm allocation policy
*/
public static void printMetricHistory(
List<? extends Host> hosts, PowerVmAllocationPolicyMigrationAbstract vmAllocationPolicy) {
for (int i = 0; i < 10; i++) {
Host host = hosts.get(i);
Log.printLine("Host #" + host.getId());
Log.printLine("Time:");
if (!vmAllocationPolicy.getTimeHistory().containsKey(host.getId())) {
continue;
}
for (Double time : vmAllocationPolicy.getTimeHistory().get(host.getId())) {
Log.format("%.2f, ", time);
}
Log.printLine();
for (Double utilization : vmAllocationPolicy.getUtilizationHistory().get(host.getId())) {
Log.format("%.2f, ", utilization);
}
Log.printLine();
for (Double metric : vmAllocationPolicy.getMetricHistory().get(host.getId())) {
Log.format("%.2f, ", metric);
}
Log.printLine();
}
}
/**
* Write metric history.
*
* @param hosts the hosts
* @param vmAllocationPolicy the vm allocation policy
* @param outputPath the output path
*/
public static void writeMetricHistory(
List<? extends Host> hosts,
PowerVmAllocationPolicyMigrationAbstract vmAllocationPolicy,
String outputPath) {
// for (Host host : hosts) {
for (int j = 0; j < 10; j++) {
Host host = hosts.get(j);
if (!vmAllocationPolicy.getTimeHistory().containsKey(host.getId())) {
continue;
}
File file = new File(outputPath + "_" + host.getId() + ".csv");
try {
file.createNewFile();
} catch (IOException e1) {
e1.printStackTrace();
System.exit(0);
}
try {
BufferedWriter writer = new BufferedWriter(new FileWriter(file));
List<Double> timeData = vmAllocationPolicy.getTimeHistory().get(host.getId());
List<Double> utilizationData = vmAllocationPolicy.getUtilizationHistory().get(host.getId());
List<Double> metricData = vmAllocationPolicy.getMetricHistory().get(host.getId());
for (int i = 0; i < timeData.size(); i++) {
writer.write(
String.format(
"%.2f,%.2f,%.2f\n", timeData.get(i), utilizationData.get(i), metricData.get(i)));
}
writer.close();
} catch (IOException e) {
e.printStackTrace();
System.exit(0);
}
}
}