/**
* This method builds instances of WebService for the distributed execution on remote nodes and
* should be only invoked if distribution is specified in the QEP.
*
* @param request the request to execute
* @throws DistributedException
*/
public DQEEPortType buildEnvironement(Request request) throws DistributedException {
// node id
int i = 0;
// Get node informations and remote QEP to send to remote nodes.
BlackBoard bl = BlackBoard.getBlackBoard();
G2NInfoNodes infoNodes = (G2NInfoNodes) bl.get(Constants.infoNodes);
qepRemoteList = (LinkedList) bl.get(Constants.qepRemoteList);
serviceURI = infoNodes.getNodes();
int numberOfRemoteNodes = infoNodes.getNumberOfNodes();
// Change "localhost" to the real IP address and put it in the BlackBoard.
RemoteBlackBoardManager.prepareBlackBoard(request);
try {
if (!containersStarted) {
// Start gt4 containers.
String start =
SystemConfiguration.getSystemConfigInfo(Constants.START_WEBSERVICES_FROM_CODE);
if (start != null) {
if (start.equalsIgnoreCase("TRUE")) startContainers();
}
// Initialize the local Web service.
qenodes = new DQEEPortType[numberOfRemoteNodes + 1];
}
// Prepare the remote nodes.
ArrayList<Starter> starterThreads = new ArrayList<Starter>();
for (i = 0; i <= numberOfRemoteNodes; i++) {
Starter starter = new Starter(i);
starter.start();
starterThreads.add(starter);
}
long veryfingStartingThreads = System.currentTimeMillis();
while (startedWebServicesNumber != (numberOfRemoteNodes + 1)) {
try {
Thread.sleep(1000);
if (webServiceCrached == true) break;
} catch (Exception ex) {
ex.printStackTrace();
}
}
// Close all Starter Threads
for (Starter starter : starterThreads) {
synchronized (starter) {
starter.interrupt();
}
}
if (webServiceCrached == true) {
throw new DistributedException("One or more web services are not initialized.");
} else {
startedWebServicesNumber = 0;
containersStarted = true;
}
logger.debug(
"beginStartingThreads : " + (System.currentTimeMillis() - veryfingStartingThreads));
// bl.remove(Constants.THIS_NODE);
} catch (Exception ex) {
containersStarted = false;
ex.printStackTrace();
throw new DistributedException("Exception in DistributedManager: " + ex.getMessage());
}
// Return the first Web service.
return qenodes[0];
}
private void prepareNode(int numNode) {
try {
long startingThreads = System.currentTimeMillis();
BlackBoard bl = BlackBoard.getBlackBoard();
String addressLocalWebService =
SystemConfiguration.getSystemConfigInfo(Constants.LOCAL_WEB_SERVICE);
// Initialize remote Web services.
if (!containersStarted)
qenodes[numNode] =
(numNode == 0)
? webServiceFactory.createService(addressLocalWebService)
: webServiceFactory.createService(serviceURI[numNode - 1]);
// Initialize the service.
if (!containersStarted) qenodes[numNode].initializeService(numNode);
// Get the local blackBoard hashmap.
// BlackBoard bl = BlackBoard.getBlackBoard();
// long BBTime = System.currentTimeMillis();
HashMap<String, Object> blackHash = bl.getHashtable();
HashMap<String, Object> hash = new HashMap<String, Object>();
hash.putAll(blackHash);
// Get the set of keys.
Set blackBoardStrings = hash.keySet();
Iterator itt = blackBoardStrings.iterator();
while (itt.hasNext()) {
// Get the object corresponding to this key.
String key1 = (String) itt.next();
Object valueObj = (Object) bl.get(key1);
String value1 = "";
// if the object is a string one, it could be copied together with its key
// to the remote blackBoard.
if (valueObj instanceof String) {
value1 = (String) valueObj;
BlackBoardParams params = new BlackBoardParams(key1, value1);
qenodes[numNode].copyToRemoteBlackBoard(params);
} else if (valueObj instanceof String[]) {
String[] newValueObj = (String[]) valueObj;
for (int j = 0; j < newValueObj.length; j++) {
value1 += newValueObj[j] + ",";
}
value1 = value1.substring(0, value1.length() - 1);
BlackBoardParams params = new BlackBoardParams(key1, value1);
qenodes[numNode].copyToRemoteBlackBoard(params);
}
}
if (numNode != 0) {
BlackBoardParams params = new BlackBoardParams(Constants.THIS_NODE, numNode + "");
qenodes[numNode].copyToRemoteBlackBoard(params);
}
// Send the QEP.
qenodes[numNode].initRemote((String) qepRemoteList.get(numNode));
if (numNode == 0) {
logger.debug("Local web service initialized.");
} else {
logger.debug("Remote node n� " + numNode + " initialized.");
}
if (numNode != 0) {
logger.debug(
"StartingThread time "
+ serviceURI[numNode - 1]
+ " : "
+ (System.currentTimeMillis() - startingThreads));
}
startedWebServicesNumber++;
} catch (RemoteException ex) {
startedWebServicesNumber++;
webServiceCrached = true;
ex.printStackTrace();
}
}