@Override
@DB
public boolean delete(TemplateProfile profile) {
boolean success = true;
VMTemplateVO template = profile.getTemplate();
Long zoneId = profile.getZoneId();
Long templateId = template.getId();
String zoneName;
List<HostVO> secondaryStorageHosts;
if (!template.isCrossZones() && zoneId != null) {
DataCenterVO zone = _dcDao.findById(zoneId);
zoneName = zone.getName();
secondaryStorageHosts = _ssvmMgr.listSecondaryStorageHostsInOneZone(zoneId);
} else {
zoneName = "(all zones)";
secondaryStorageHosts = _ssvmMgr.listSecondaryStorageHostsInAllZones();
}
s_logger.debug(
"Attempting to mark template host refs for template: "
+ template.getName()
+ " as destroyed in zone: "
+ zoneName);
// Make sure the template is downloaded to all the necessary secondary storage hosts
for (HostVO secondaryStorageHost : secondaryStorageHosts) {
long hostId = secondaryStorageHost.getId();
List<VMTemplateHostVO> templateHostVOs = _tmpltHostDao.listByHostTemplate(hostId, templateId);
for (VMTemplateHostVO templateHostVO : templateHostVOs) {
if (templateHostVO.getDownloadState() == Status.DOWNLOAD_IN_PROGRESS) {
String errorMsg = "Please specify a template that is not currently being downloaded.";
s_logger.debug(
"Template: "
+ template.getName()
+ " is currently being downloaded to secondary storage host: "
+ secondaryStorageHost.getName()
+ "; cant' delete it.");
throw new CloudRuntimeException(errorMsg);
}
}
}
Account account = _accountDao.findByIdIncludingRemoved(template.getAccountId());
String eventType = "";
if (template.getFormat().equals(ImageFormat.ISO)) {
eventType = EventTypes.EVENT_ISO_DELETE;
} else {
eventType = EventTypes.EVENT_TEMPLATE_DELETE;
}
// Iterate through all necessary secondary storage hosts and mark the template on each host as
// destroyed
for (HostVO secondaryStorageHost : secondaryStorageHosts) {
long hostId = secondaryStorageHost.getId();
long sZoneId = secondaryStorageHost.getDataCenterId();
List<VMTemplateHostVO> templateHostVOs = _tmpltHostDao.listByHostTemplate(hostId, templateId);
for (VMTemplateHostVO templateHostVO : templateHostVOs) {
VMTemplateHostVO lock = _tmpltHostDao.acquireInLockTable(templateHostVO.getId());
try {
if (lock == null) {
s_logger.debug(
"Failed to acquire lock when deleting templateHostVO with ID: "
+ templateHostVO.getId());
success = false;
break;
}
UsageEventVO usageEvent =
new UsageEventVO(eventType, account.getId(), sZoneId, templateId, null);
_usageEventDao.persist(usageEvent);
templateHostVO.setDestroyed(true);
_tmpltHostDao.update(templateHostVO.getId(), templateHostVO);
String installPath = templateHostVO.getInstallPath();
if (installPath != null) {
Answer answer =
_agentMgr.sendToSecStorage(
secondaryStorageHost,
new DeleteTemplateCommand(secondaryStorageHost.getStorageUrl(), installPath));
if (answer == null || !answer.getResult()) {
s_logger.debug(
"Failed to delete "
+ templateHostVO
+ " due to "
+ ((answer == null) ? "answer is null" : answer.getDetails()));
} else {
_tmpltHostDao.remove(templateHostVO.getId());
s_logger.debug("Deleted template at: " + installPath);
}
} else {
_tmpltHostDao.remove(templateHostVO.getId());
}
VMTemplateZoneVO templateZone = _tmpltZoneDao.findByZoneTemplate(sZoneId, templateId);
if (templateZone != null) {
_tmpltZoneDao.remove(templateZone.getId());
}
} finally {
if (lock != null) {
_tmpltHostDao.releaseFromLockTable(lock.getId());
}
}
}
if (!success) {
break;
}
}
s_logger.debug(
"Successfully marked template host refs for template: "
+ template.getName()
+ " as destroyed in zone: "
+ zoneName);
// If there are no more non-destroyed template host entries for this template, delete it
if (success && (_tmpltHostDao.listByTemplateId(templateId).size() == 0)) {
long accountId = template.getAccountId();
VMTemplateVO lock = _tmpltDao.acquireInLockTable(templateId);
try {
if (lock == null) {
s_logger.debug("Failed to acquire lock when deleting template with ID: " + templateId);
success = false;
} else if (_tmpltDao.remove(templateId)) {
// Decrement the number of templates
_resourceLimitMgr.decrementResourceCount(accountId, ResourceType.template);
}
} finally {
if (lock != null) {
_tmpltDao.releaseFromLockTable(lock.getId());
}
}
s_logger.debug(
"Removed template: "
+ template.getName()
+ " because all of its template host refs were marked as destroyed.");
}
return success;
}
