--- /dev/null
+package psgsim;
+
+import org.simgrid.msg.Host;
+import peersim.core.Network;
+import peersim.core.Node;
+
+import java.util.Comparator;
+import java.util.Map;
+import java.util.TreeMap;
+
+/**
+ *
+ * NodeHost class used to make the mapping Node-Host.
+ *
+ * @author Khaled Baati 26/10/2014
+ * @version version 1.1
+ */
+public class NodeHost {
+
+ /**
+ * A collection of map contained the couple (host,node)
+ */
+ public static TreeMap<Node, Host> mapHostNode = new TreeMap<Node, Host>(
+ new Comparator<Node>() {
+ public int compare(Node n1, Node n2) {
+ return String.valueOf(n1.getID()).compareTo(
+ String.valueOf(n2.getID()));
+ }
+ });
+
+ /**
+ * The main method to make the mapping Node to Host in the
+ * {@link #mapHostNode} field
+ */
+ public static void start() {
+ Host host = null;
+ for (Integer i = 0; i < PSGSimulator.size; i++) {
+ host = PSGPlatform.hostList[i];
+ mapHostNode.put(Network.get(i), host);
+ }
+ }
+
+ /**
+ * This static method gets a Node instance associated with a host of your
+ * platform.
+ *
+ * @param host
+ * The host associated in your platform.
+ * @return The node associated.
+ */
+ public static Node getNode(Host host) {
+ for (Map.Entry<Node, Host> element : mapHostNode.entrySet()) {
+ if (element.getValue() == host)
+ return element.getKey();
+ }
+ return null;
+ }
+
+ /**
+ * This static method gets a host instance associated with the node of your
+ * platform.
+ *
+ * @param node
+ * The node associated in your platform.
+ * @return The host associated, else return null (host doesn't exist).
+ */
+ public static Host getHost(Node node) {
+ for (Map.Entry<Node, Host> element : mapHostNode.entrySet()) {
+ if (element.getKey() == node)
+ return element.getValue();
+ }
+ return null;
+ }
+}
