// This method generally should only be called by HubProvideFactory.removeHubRequestMonitor()
public void destroy() {
if (systemData != null) systemData.system.destroy();
synchronized (this) {
if (createSystemFuture != null) createSystemFuture.cancel(true);
if (queryOperation != null) queryOperation.cancel();
queryOperation = null;
if (gracePeriodFuture != null) gracePeriodFuture.cancel(true);
gracePeriodFuture = null;
if (gracePeriodExpiredFuture != null) gracePeriodExpiredFuture.cancel(true);
gracePeriodExpiredFuture = null;
if (activateInterestOperation != null) activateInterestOperation.cancel();
activateInterestOperation = null;
if (provider != null) provider.destroy();
provider = null;
if (hubConfig != null) hubProvideFactory.removeHubConfig(hubConfig);
hubConfig = null;
if (hubRequestRequestor != null) hubRequestRequestor.destroy();
hubRequestRequestor = null;
}
}
public void handleGracePeriodExpired() {
synchronized (this) {
gracePeriodExpiredFuture = null;
// if (requestProvided.get())
// return;
// gracePeriodExpired.set(true);
if (provider != null) {
provider.destroy();
provider = null;
}
}
hubProvideFactory.removeHubConfig(hubConfig);
}
public void cancelActivate() {
boolean cleanup = false;
synchronized (this) {
if (provider == null) {
// If the hubProvider has not been started its because the grace period has not been
// obtained from the requestor.
// The requestor not seeing a get call for the grace period is it's sign that something
// failed (i.e. create system)
// this flags the requestor to cancel interest and re-issue interest for retries.
// thus clean everything up to this point
if (createSystemFuture != null) createSystemFuture.cancel(true);
if (gracePeriodFuture != null) gracePeriodFuture.cancel(true);
cleanup = true;
}
}
if (cleanup)
hubProvideFactory.removeHubRequestMonitor(
providerId); // in a state that only a new interest can get it back up.
// else if the requestor wanted to drop interest at this point, they could simply keep grace
// period provide up to keep the hub provider active
// losing and gaining the grace period interface will be the trigger for gracePeriod timeout and
// cleanup from here out.
}
private void setHubConfig() {
boolean created = false;
synchronized (this) {
if (hubConfig == null) {
// @formatter:off
hubConfig =
new DOFConnection.Config.Builder(
DOFConnection.Type.HUB, new DOFGroupAddress(systemData.groupId))
.setName(
systemData.groupId.getDataString()
+ "."
+ systemData.domainId.getDataString()
+ "-HubConnection")
.setCredentials(systemData.credentials)
.setTunnelDomains(HubManagerModule.HubsTunnelDomains)
.setMaxReceiveSilence(HubManagerModule.HubsMaxReceiveSilence)
.setMaxSendSilence(HubManagerModule.HubsMaxSendSilence)
.build();
// @formatter:on
created = true;
}
}
if (created) hubProvideFactory.addHubConfig(this);
}
void handleInterfaceAdded(DOFObjectID objectId, DOFInterfaceID interfaceId) {
DOFObject requestor;
int requestorGracePeriodMinutes = -1;
// this is the flag that other domainManagers started this sequence, MAX_VALUE == started by
// activate, not broadcast get
boolean broadcastGetActivated =
(hubProvideFactory.coreDomainGracePeriodMinutes.get() != Integer.MAX_VALUE);
try {
requestor =
systemData.system.waitProvider(objectId, interfaceId, hubProvideFactory.commTimeout);
requestorGracePeriodMinutes =
HubRequestInterface.getGracePeriod(requestor, hubProvideFactory.commTimeout);
synchronized (this) {
if (gracePeriodExpiredFuture != null) {
gracePeriodExpiredFuture.cancel(true);
gracePeriodExpiredFuture = null;
return;
}
hubRequestRequestor = requestor;
}
} catch (Exception e) {
/*
* Interesting point in time here ... the coredomain broadcast's get may have initiated the startup sequence instead of
* a requestor's activate. The coredomain's get handler will be capturing the smallest value seen from the broadcast
* and we are going to go with the lowest that has been seen at this time. (comm timeout on get from the requestor).
* If the requestor's provide and getGracePeriod do not fail, then the state of the other cr/domain managers no longer matters
* to this manager as we have a know live requestor.
*/
// this is the flag that other domainManagers started this sequence, MAX_VALUE == started by
// activate, not broadcast get
if (!broadcastGetActivated) {
// this is a fatal timeout, clean up the monitor;
log.warn(
"Failed to obtain hubRequestRequestor for getting grace period on {}: " + e,
providerId);
hubProvideFactory.removeHubRequestMonitor(providerId);
return;
}
}
synchronized (this) {
provider =
new HubProvider(hubProvideFactory.coreSystem, providerId, requestorGracePeriodMinutes);
provider.init();
provider.requestProvideStarted();
}
setHubConfig();
if (broadcastGetActivated && requestorGracePeriodMinutes == -1) {
GracePeriodExpiredTask gracePeriodExpiredTask = new GracePeriodExpiredTask(this);
synchronized (this) {
if (gracePeriodFuture != null) {
gracePeriodFuture.cancel(true);
gracePeriodFuture = null;
}
int remaining = hubProvideFactory.coreDomainGracePeriodMinutes.get();
gracePeriodExpiredFuture =
hubProvideFactory.timerExecutor.schedule(
gracePeriodExpiredTask, remaining, TimeUnit.MINUTES);
provider.requestProvideStopped(remaining);
}
}
}
void getSystemAndStartQuery() {
try {
Authentication groupId = DOFObjectID.Authentication.create(providerId.getBase());
DOFObjectID.Attribute attr = providerId.getAttribute(DOFObjectID.Attribute.GROUP);
Domain domainId = DOFObjectID.Domain.create(attr.getValueObjectID());
DOFCredentials domainCredentials =
DOFCredentials.create(hubProvideFactory.coreCredentials, domainId);
//
// @formatter:off
DOFSystem.Config domainSystemConfig =
new DOFSystem.Config.Builder()
.setName(groupId.getDataString() + "." + domainId.getDataString() + "-DOFSystem")
.setCredentials(domainCredentials)
.setPermissionsExtendAllowed(true)
.setTunnelDomains(true)
.build();
// @formatter:on
DOFDomain.Config domainConfig = new DOFDomain.Config.Builder(domainCredentials).build();
DOFDomain serviceDomain = hubProvideFactory.dof.createDomain(domainConfig);
serviceDomain.addStateListener(this);
long t0 = System.currentTimeMillis();
long to = hubProvideFactory.commTimeout;
synchronized (domainFound) {
while (!domainFound.get()) {
try {
domainFound.wait(to);
if (domainFound.get()) break;
long delta = System.currentTimeMillis() - t0;
if (delta >= hubProvideFactory.commTimeout)
throw new TimeoutException(
"timed out: " + to + " waiting for Domain listener to report completed");
to =
hubProvideFactory.commTimeout
- delta; // spurious wakeup, or wait(to) slightly off System.currentTimeMillis
} finally {
serviceDomain.removeStateListener(this);
}
}
}
DOFSystem system =
hubProvideFactory.dof.createSystem(domainSystemConfig, hubProvideFactory.commTimeout);
systemData = new CreateSystemTask.SystemData(groupId, domainId, domainCredentials, system);
} catch (InterruptedException e) {
hubProvideFactory.removeHubRequestMonitor(providerId);
log.debug("Create system task interrupted.");
return;
} catch (Exception e) {
hubProvideFactory.removeHubRequestMonitor(providerId);
log.debug("Create system failed {} - " + e.getCause(), providerId);
return;
}
synchronized (this) {
if (activateInterestOperation == null || activateInterestOperation.isComplete())
activateInterestOperation =
systemData.system.beginInterest(
systemData.groupId,
HubRequestInterface.IID,
DOFInterestLevel.ACTIVATE,
DOF.TIMEOUT_NEVER,
null,
null);
if (queryOperation == null || queryOperation.isComplete()) {
DOFQuery query =
new DOFQuery.Builder()
.addFilter(providerId)
.addRestriction(HubRequestInterface.IID)
.build();
queryOperation = systemData.system.beginQuery(query, DOF.TIMEOUT_NEVER, this, null);
}
createSystemFuture = null;
log.debug(
"HubManager dof: "
+ hubProvideFactory.dof.getState().getName()
+ " beginQuery for: "
+ providerId.toStandardString()
+ ":"
+ HubRequestInterface.IID);
}
}
