}
private void initiateTemplateDownload(DataObject template, AsyncCompletionCallback<DownloadAnswer> callback) {
boolean downloadJobExists = false;
TemplateDataStoreVO vmTemplateStore = null;
DataStore store = template.getDataStore();
vmTemplateStore = _vmTemplateStoreDao.findByStoreTemplate(store.getId(), template.getId());
if (vmTemplateStore == null) {
vmTemplateStore = new TemplateDataStoreVO(store.getId(), template.getId(), new Date(), 0,
Status.NOT_DOWNLOADED, null, null, "jobid0000", null, template.getUri());
vmTemplateStore.setDataStoreRole(store.getRole());
vmTemplateStore = _vmTemplateStoreDao.persist(vmTemplateStore);
} else if ((vmTemplateStore.getJobId() != null) && (vmTemplateStore.getJobId().length() > 2)) {
downloadJobExists = true;
}
Long maxTemplateSizeInBytes = getMaxTemplateSizeInBytes();
if (vmTemplateStore != null) {
start();
VirtualMachineTemplate tmpl = this._templateDao.findById(template.getId());
DownloadCommand dcmd = new DownloadCommand((TemplateObjectTO)(template.getTO()), maxTemplateSizeInBytes);
dcmd.setProxy(getHttpProxy());
if (downloadJobExists) {
dcmd = new DownloadProgressCommand(dcmd, vmTemplateStore.getJobId(), RequestType.GET_OR_RESTART);
}
if (vmTemplateStore.isCopy()) {
dcmd.setCreds(TemplateConstants.DEFAULT_HTTP_AUTH_USER, _copyAuthPasswd);
}
EndPoint ep = _epSelector.select(template);
if (ep == null) {
s_logger.warn("There is no secondary storage VM for downloading template to image store " + store.getName());
return;
}
DownloadListener dl = new DownloadListener(ep, store, template, _timer, this, dcmd,
callback);
ComponentContext.inject(dl); // initialize those auto-wired field in download listener.
if (downloadJobExists) {
// due to handling existing download job issues, we still keep
// downloadState in template_store_ref to avoid big change in
// DownloadListener to use
// new ObjectInDataStore.State transition. TODO: fix this later
// to be able to remove downloadState from template_store_ref.
s_logger.info("found existing download job");
dl.setCurrState(vmTemplateStore.getDownloadState());
}
try {
ep.sendMessageAsync(dcmd, new UploadListener.Callback(ep.getId(), dl));
} catch (Exception e) {
s_logger.warn("Unable to start /resume download of template " + template.getId() + " to " + store.getName(), e);
dl.setDisconnected();
dl.scheduleStatusCheck(RequestType.GET_OR_RESTART);
}
}
}