/**
* Search all the remote FCEndpoints, remove those having the same RemotePortName that are in a
* different fabric from a different device.
*
* @param remoteWwpn RemotePortName of new entry
* @param fabricWwn FabricWwn of new entry
* @param deviceId Device that found the updated connections
* @return count of those removed
* @throws IOException
*/
private int removeConflictingEndpoints(String remoteWwpn, String fabricWwn, URI deviceId)
throws IOException {
int removedCount = 0;
URIQueryResultList uriList = new URIQueryResultList();
dbClient.queryByConstraint(
AlternateIdConstraint.Factory.getFCEndpointRemotePortNameConstraint(remoteWwpn), uriList);
for (URI uri : uriList) {
FCEndpoint ep = dbClient.queryObject(FCEndpoint.class, uri);
if (ep == null) {
continue;
}
if (ep.getNetworkDevice().equals(deviceId)) {
continue;
}
if (ep.getRemotePortName().equals(remoteWwpn) == false) {
continue;
}
if (ep.getFabricWwn().equals(fabricWwn)) {
continue;
}
dbClient.removeObject(ep);
removedCount++;
}
return removedCount;
}
/**
* Returns true if any fields of significance has been modified.
*
* @param existing
* @param current
* @return false if no updates, true if updated
*/
private boolean checkUpdated(FCEndpoint existing, FCEndpoint current) {
boolean updated = false;
if (existing.getInactive() == true) {
existing.setInactive(false);
updated = true;
}
if (checkAttributeChanged(existing.getRemotePortName(), current.getRemotePortName())) {
existing.setRemotePortName(current.getRemotePortName());
updated = true;
}
if (checkAttributeChanged(existing.getRemoteNodeName(), current.getRemoteNodeName())) {
existing.setRemoteNodeName(current.getRemoteNodeName());
updated = true;
}
if (checkAttributeChanged(existing.getRemotePortAlias(), current.getRemotePortAlias())) {
existing.setRemotePortAlias(
current.getRemotePortAlias() == null ? "" : current.getRemotePortAlias());
updated = true;
}
if (checkAttributeChanged(existing.getFabricId(), current.getFabricId())) {
existing.setFabricId(current.getFabricId());
updated = true;
}
if (checkAttributeChanged(existing.getFcid(), current.getFcid())) {
existing.setFcid(current.getFcid());
updated = true;
}
if (checkAttributeChanged(existing.getSwitchInterface(), current.getSwitchInterface())) {
existing.setSwitchInterface(current.getSwitchInterface());
updated = true;
}
if (checkAttributeChanged(existing.getSwitchName(), current.getSwitchName())) {
existing.setSwitchName(current.getSwitchName());
updated = true;
}
if (checkAttributeChanged(existing.getSwitchPortName(), current.getSwitchPortName())) {
existing.setSwitchPortName(current.getSwitchPortName());
updated = true;
}
if (checkAttributeChanged(existing.getFabricWwn(), current.getFabricWwn())) {
existing.setFabricWwn(current.getFabricWwn());
updated = true;
}
return updated;
}
/**
* Reconciles the current set of a Device's endpoints with what is persisted. Updates the database
* accordingly.
*
* @param dev
* @param currentConnections
* @throws IOException
*/
private void reconcileFCEndpoints(NetworkSystem dev, List<FCEndpoint> currentConnections)
throws IOException {
// First, read all the existing connections from the device, and put them into a map
// keyed by remote wwpn.
URIQueryResultList uriList = new URIQueryResultList();
dbClient.queryByConstraint(
ContainmentConstraint.Factory.getNetworkSystemFCPortConnectionConstraint(dev.getId()),
uriList);
Map<String, FCEndpoint> existingEndpoints = new HashMap<String, FCEndpoint>();
for (URI uriold : uriList) {
FCEndpoint connection = dbClient.queryObject(FCEndpoint.class, uriold);
if (connection != null) {
existingEndpoints.put(connection.getRemotePortName().toUpperCase(), connection);
}
}
// Now, scan the new endpoints, looking for added or updated records by
// comparing them with the existing endpoints. Keep track of what was processed
// so can do deletions on anything not seen in the currentConnections.
List<FCEndpoint> updated = new ArrayList<FCEndpoint>();
List<FCEndpoint> created = new ArrayList<FCEndpoint>();
Set<String> processedWwpns = new HashSet<String>();
int conflictingEndpoints = 0;
for (FCEndpoint current : currentConnections) {
String key = current.getRemotePortName().toUpperCase();
processedWwpns.add(key);
FCEndpoint existing = existingEndpoints.get(key);
if (existing == null) {
current.setNetworkDevice(dev.getId());
current.setId(URIUtil.createId(FCEndpoint.class));
created.add(current);
conflictingEndpoints +=
removeConflictingEndpoints(key, current.getFabricWwn(), dev.getId());
} else {
boolean modified = checkUpdated(existing, current);
if (existing.getAwolCount() > 0) {
modified = true;
existing.setAwolCount(0);
existing.setAwolTime(null);
}
if (modified) {
updated.add(existing);
conflictingEndpoints +=
removeConflictingEndpoints(key, current.getFabricWwn(), dev.getId());
}
}
}
// Determine those to be deleted. Remove all the processed records from the existing set.
// What was left were not seen this time.
for (String key : processedWwpns) {
existingEndpoints.remove(key);
}
// The remaining existingEndpoints can be processed for removal.
// They are removed after a minimum number of samples and minimum amount of time has transpired.
Integer removedCount = 0;
for (FCEndpoint entry : existingEndpoints.values()) {
int count = entry.getAwolCount();
if (count == 0) {
entry.setAwolTime(System.currentTimeMillis());
}
entry.setAwolCount(++count);
if (count >= _minAwolSamples
&& (System.currentTimeMillis() - entry.getAwolTime()) > _minAwolTime) {
removedCount++;
dbClient.removeObject(entry);
} else {
updated.add(entry); // update counters
}
}
// Persist created, modified.
dbClient.createObject(created);
dbClient.updateAndReindexObject(updated);
_log.info(MessageFormat.format("{0} new connections persisted", created.size()).toString());
_log.info(MessageFormat.format("{0} updated connections persisted", updated.size()).toString());
_log.info(
MessageFormat.format("{0} missing connections", existingEndpoints.values().size())
.toString());
_log.info(MessageFormat.format("{0} removed connections", removedCount.toString()));
_log.info(MessageFormat.format("{0} conflicting connections (removed)", conflictingEndpoints));
}
