/**
* Concurrently stops a List of Vms, then restart them. Does not wait for the restart to complete
* before returning. This allows the caller to carry out operations concurrent with the stop and
* start activity, then wait for the restart to complete using {@link
* #joinStopStartThreads(List,List)}.
*
* <p>Side effects: For any VM which is performing a NICE_KILL because of this call, it is marked
* as such in the StopStartBB (blackboard). The blackboard will contain a key prefixed with
* util.StopStartVMs.NiceKillInProgress and appended to with its VmId. The value of this key is
* the true.
*
* <p>This blackboard entry is for the convenience of the caller, and it is up to the caller to
* look for it or not. When a VM undergoes a NICE_KILL, the VM closes the cache and disconnects
* from the distributed system. Any threads in that VM doing work can get exceptions during the
* close and/or disconnect step. This blackboard entry is useful for those threads to allow
* exceptions when they know an exception is possible.
*
* @param targetVmList A list of hydra.ClientVmInfos to stop then restart.
* @param stopModeList A parallel list of stop modes (Strings).
* @return threadList The threads created to stop the VMs.
*/
public static List stopStartAsync(List targetVmList, List stopModeList) {
if (targetVmList.size() != stopModeList.size()) {
throw new TestException(
"Expected targetVmList "
+ targetVmList
+ " and stopModeList "
+ stopModeList
+ " to be parallel lists of the same size, but they have different sizes");
}
Log.getLogWriter()
.info(
"In stopStartVMs, vms to stop: "
+ targetVmList
+ ", corresponding stop modes: "
+ stopModeList);
// mark in the blackboard any vms that will undergo a NICE_KILL
for (int i = 0; i < stopModeList.size(); i++) {
String stopMode = (String) (stopModeList.get(i));
if (ClientVmMgr.toStopMode(stopMode) == ClientVmMgr.NICE_KILL) {
// write nice kills to the blackboard so the killed vm may, if it chooses, handle any
// exceptions that are underway.
StopStartBB.getBB()
.getSharedMap()
.put(
NiceKillInProgress + ((ClientVmInfo) targetVmList.get(i)).getVmid(),
new Boolean(true));
}
}
// stop all vms in targetVms list
List threadList = new ArrayList();
for (int i = 0; i < targetVmList.size(); i++) {
ClientVmInfo targetVm = (ClientVmInfo) (targetVmList.get(i));
int stopMode = ClientVmMgr.toStopMode((String) (stopModeList.get(i)));
Thread aThread = new StopStartVMs(targetVm, stopMode);
aThread = new HydraSubthread(aThread);
threadList.add(aThread);
aThread.start();
}
return threadList;
}
/**
* Concurrently stop and/or start a List of Vms. Wait for the operations to complete before
* returning.
*
* <p>Side effects: For any VM which is performing a NICE_KILL because of this call, it is marked
* as such in the StopStartBB (blackboard). The blackboard will contain a key prefixed with
* util.StopStartVMs.NiceKillInProgress and appended to with its VmId. The value of this key is
* the true.
*
* <p>This blackboard entry is for the convenience of the caller, and it is up to the caller to
* look for it or not. When a VM undergoes a NICE_KILL, the VM closes the cache and disconnects
* from the distributed system. Any threads in that VM doing work can get exceptions during the
* close and/or disconnect step. This blackboard entry is useful for those threads to allow
* exceptions when they know an exception is possible.
*
* @param targetVmList A list of hydra.ClientVmInfos to stop and/or start.
* @param stopModeList A parallel list of stop modes (Strings), if doStop is true.
* @param doStop True if we want to stop the targetVmList, false if not.
* @param doStart True if we want to start the targetVmList, false if not.
*/
private static void stopStartVMs(
List targetVmList, List stopModeList, boolean doStop, boolean doStart) {
Log.getLogWriter()
.info(
"In stopStartVMs, vms to "
+ getAction(doStop, doStart)
+ ": "
+ targetVmList
+ ", corresponding stop modes: "
+ stopModeList);
if (doStop) {
// mark in the blackboard any vms that will undergo a NICE_KILL
for (int i = 0; i < stopModeList.size(); i++) {
String stopMode = (String) (stopModeList.get(i));
if (ClientVmMgr.toStopMode(stopMode) == ClientVmMgr.NICE_KILL) {
// write nice kills to the blackboard so the killed vm may, if it chooses, handle any
// exceptions that are underway.
StopStartBB.getBB()
.getSharedMap()
.put(
NiceKillInProgress + ((ClientVmInfo) targetVmList.get(i)).getVmid(),
new Boolean(true));
}
}
}
// process the vms in targetVms list
List threadList = new ArrayList();
for (int i = 0; i < targetVmList.size(); i++) {
ClientVmInfo targetVm = (ClientVmInfo) (targetVmList.get(i));
int stopMode = 0;
if (doStop) {
stopMode = ClientVmMgr.toStopMode((String) (stopModeList.get(i)));
}
StringBuffer aStr = new StringBuffer();
Thread aThread = new StopStartVMs(targetVm, stopMode, doStop, doStart);
aThread = new HydraSubthread(aThread);
threadList.add(aThread);
aThread.start();
}
// wait for all threads to complete their actions
for (int i = 0; i < threadList.size(); i++) {
Thread aThread = (Thread) (threadList.get(i));
try {
aThread.join();
} catch (InterruptedException e) {
throw new TestException(TestHelper.getStackTrace(e));
}
}
String err = (String) (StopStartBB.getBB().getSharedMap().get(StopStartBB.errKey));
if (err != null) {
throw new TestException(err);
}
// reset the blackboard entries
if (doStop) {
for (int i = 0; i < targetVmList.size(); i++) {
ClientVmInfo targetVm = (ClientVmInfo) (targetVmList.get(i));
StopStartBB.getBB()
.getSharedMap()
.put(StopStartVMs.NiceKillInProgress + targetVm.getVmid(), new Boolean(false));
}
}
Log.getLogWriter()
.info("In stopStartVMs, done with " + getAction(doStop, doStart) + ": " + targetVmList);
}