/** This method will show you how to create Gridlets */
private void createGridlet(int userID, int numGridlet, int[] data) {
int k = 0;
for (int i = 0; i < numGridlet; i++) {
if (k == data.length) {
k = 0;
}
// Creates a Gridlet
Gridlet gl = new Gridlet(i, data[k], data[k], data[k]);
gl.setUserID(userID);
this.list_.add(gl);
k++;
}
}
/** Prints the Gridlet objects */
private void printGridletList(GridletList list, String name) {
int size = list.size();
Gridlet gridlet = null;
String indent = " ";
System.out.println();
System.out.println("============= OUTPUT for " + name + " ==========");
System.out.println("Gridlet ID" + indent + "STATUS" + indent + "Resource ID" + indent + "Cost");
// a loop to print the overall result
int i = 0;
for (i = 0; i < size; i++) {
gridlet = (Gridlet) list.get(i);
System.out.print(indent + gridlet.getGridletID() + indent + indent);
System.out.print(gridlet.getGridletStatusString());
System.out.println(
indent
+ indent
+ gridlet.getResourceID()
+ indent
+ indent
+ gridlet.getProcessingCost());
}
// a loop to print each Gridlet's history
for (i = 0; i < size; i++) {
gridlet = (Gridlet) list.get(i);
System.out.println(gridlet.getGridletHistory());
System.out.print("Gridlet #" + gridlet.getGridletID());
System.out.println(
", length = "
+ gridlet.getGridletLength()
+ ", finished so far = "
+ gridlet.getGridletFinishedSoFar());
System.out.println("===========================================\n");
}
}
/** The core method that handles communications among GridSim entities. */
public void body() {
// wait for a little while for about 3 seconds.
// This to give a time for GridResource entities to register their
// services to GIS (GridInformationService) entity.
super.gridSimHold(3.0);
LinkedList resList = super.getGridResourceList();
// initialises all the containers
int totalResource = resList.size();
int resourceID[] = new int[totalResource];
String resourceName[] = new String[totalResource];
// a loop to get all the resources available
int i = 0;
for (i = 0; i < totalResource; i++) {
// Resource list contains list of resource IDs
resourceID[i] = ((Integer) resList.get(i)).intValue();
// get their names as well
resourceName[i] = GridSim.getEntityName(resourceID[i]);
}
////////////////////////////////////////////////
// SUBMIT Gridlets
// determines which GridResource to send to
int index = myId_ % totalResource;
if (index >= totalResource) {
index = 0;
}
// sends all the Gridlets
Gridlet gl = null;
boolean success;
for (i = 0; i < list_.size(); i++) {
gl = (Gridlet) list_.get(i);
// For even number of Gridlets, send with an acknowledgement
if (i % 2 == 0) {
success = super.gridletSubmit(gl, resourceID[index], 0.0, true);
System.out.println(
name_
+ ": Sending Gridlet #"
+ gl.getGridletID()
+ " with status = "
+ success
+ " to "
+ resourceName[index]);
}
// For odd number of Gridlets, send without an acknowledgement
else {
success = super.gridletSubmit(gl, resourceID[index], 0.0, false);
System.out.println(
name_
+ ": Sending Gridlet #"
+ gl.getGridletID()
+ " with NO ACK so status = "
+ success
+ " to "
+ resourceName[index]);
}
}
//////////////////////////////////////////
// CANCELING Gridlets
// hold for few period -- 100 seconds
super.gridSimHold(15);
System.out.println("<<<<<<<<< pause for 15 >>>>>>>>>>>");
// a loop that cancels an even number of Gridlet
for (i = 0; i < list_.size(); i++) {
if (i % 2 == 0) {
gl = super.gridletCancel(i, myId_, resourceID[index], 0.0);
System.out.print(name_ + ": Canceling Gridlet #" + i + " at time = " + GridSim.clock());
if (gl == null) {
System.out.println(" result = NULL");
} else // if Cancel is successful, then add it into the list
{
System.out.println(" result = NOT null");
receiveList_.add(gl);
}
}
}
////////////////////////////////////////////////////////
// RECEIVES Gridlets back
// hold for few period - 1000 seconds since the Gridlets length are
// quite huge for a small bandwidth
super.gridSimHold(1000);
System.out.println("<<<<<<<<< pause for 1000 >>>>>>>>>>>");
// receives the gridlet back
int size = list_.size() - receiveList_.size();
for (i = 0; i < size; i++) {
gl = (Gridlet) super.receiveEventObject(); // gets the Gridlet
receiveList_.add(gl); // add into the received list
System.out.println(
name_ + ": Receiving Gridlet #" + gl.getGridletID() + " at time = " + GridSim.clock());
}
System.out.println(this.name_ + ":%%%% Exiting body() at time " + GridSim.clock());
// shut down I/O ports
shutdownUserEntity();
terminateIOEntities();
// Prints the simulation output
printGridletList(receiveList_, name_);
}