Move Java examples to examples/java/.

[simgrid.git] / examples / java / cloud / Master.java

diff --git a/examples/java/cloud/Master.java b/examples/java/cloud/Master.java
new file mode 100644 (file)
index 0000000..1551521
--- /dev/null
+++ b/examples/java/cloud/Master.java
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2012. The SimGrid Team. All rights reserved. 
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. 
+ */
+package cloud;
+
+import java.util.ArrayList;
+
+import org.simgrid.msg.Host;
+import org.simgrid.msg.Msg;
+import org.simgrid.msg.MsgException;
+import org.simgrid.msg.Process;
+import org.simgrid.msg.Task;
+import org.simgrid.msg.VM;
+
+public class Master extends Process {
+       private Host[] hosts;
+       
+       public Master(Host host, String name, Host[] hosts) {
+               super(host,name,null);
+               this.hosts = hosts;
+       }
+       public void main(String[] args) throws MsgException {
+               int slavesCount = 10;
+               
+               ArrayList<VM> vms = new ArrayList<VM>();
+               
+               for (int i = 0; i < slavesCount; i++) {
+                       Slave slave = new Slave(hosts[i],i);
+                       slave.start();
+                       VM vm = new VM(hosts[i],hosts[i]+"_"+i,1);
+                       vm.bind(slave);
+                       vms.add(vm);
+               }
+               Msg.info("Launched " + vms.size() + " VMs");
+               
+               Msg.info("Send a first batch of work to everyone");
+               workBatch(slavesCount);
+               
+               Msg.info("Now suspend all VMs, just for fun");
+               for (int i = 0; i < vms.size(); i++) {
+                       vms.get(i).suspend();
+               }
+               
+               Msg.info("Wait a while");
+               waitFor(2);
+               
+               Msg.info("Enough. Let's resume everybody.");
+               for (int i = 0; i < vms.size(); i++) {
+                       vms.get(i).resume();
+               }
+               
+               Msg.info("Sleep long enough for everyone to be done with previous batch of work");
+               waitFor(1000 - Msg.getClock());
+               
+               Msg.info("Add one more process per VM.");
+               for (int i = 0; i < vms.size(); i++) {
+                       VM vm = vms.get(i);
+                       Slave slave = new Slave(hosts[i],i + vms.size());
+                       slave.start();
+                       vm.bind(slave);
+               }
+               
+               Msg.info("Migrate everyone to the second host.");
+               for (int i = 0; i < vms.size(); i++) {
+                       vms.get(i).migrate(hosts[1]);
+               }
+               
+               Msg.info("Suspend everyone, move them to the third host, and resume them.");
+               for (int i = 0; i < vms.size(); i++) {
+                       VM vm = vms.get(i);
+                       vm.suspend();
+                       vm.migrate(hosts[2]);
+                       vm.resume();
+               }
+               
+               workBatch(slavesCount * 2);
+               
+               Msg.info("Let's shut down the simulation and kill everyone.");
+               
+               for (int i = 0; i < vms.size(); i++) {
+                       vms.get(i).shutdown();
+               }                               
+               Msg.info("Master done.");
+       }
+       
+       public void workBatch(int slavesCount) throws MsgException {
+               for (int i = 0; i < slavesCount; i++) {
+                       Task task = new Task("Task_" + i, Cloud.task_comp_size, Cloud.task_comm_size);
+                       Msg.info("Sending to " + i);
+                       task.send("slave_" + i);
+               }
+       }
+}