private static VDSReturnValue runVdsCommand(
VDSCommandType vdsCommandType,
VdsIdVDSCommandParametersBase params,
Guid storagePoolId,
CommandBase<?> cmd,
boolean performFailover) {
Set<Guid> executedHosts = new HashSet<>();
VDSReturnValue returnValue = null;
if (params.getVdsId() == null) {
chooseHostForExecution(params, storagePoolId, cmd, Collections.emptyList());
if (params.getVdsId() == null) {
throw new EngineException(
EngineError.RESOURCE_MANAGER_VDS_NOT_FOUND,
"No host was found to perform the operation");
}
}
int attempts = 0;
while (attempts <= Config.<Integer>getValue(ConfigValues.HsmCommandFailOverRetries)) {
try {
attempts++;
returnValue = getBackend().getResourceManager().runVdsCommand(vdsCommandType, params);
if (returnValue != null && returnValue.getSucceeded()) {
return returnValue;
}
} catch (EngineException e) {
returnValue = e.getVdsReturnValue();
}
executedHosts.add(params.getVdsId());
if (!performFailover || (returnValue != null && !returnValue.isCanTryOnDifferentVds())) {
break;
}
chooseHostForExecution(params, storagePoolId, cmd, executedHosts);
if (params.getVdsId() == null) {
break;
}
}
return VdsHandler.handleVdsResult(returnValue);
}
private static void chooseHostForExecution(
VdsIdVDSCommandParametersBase parametersBase,
Guid storagePoolId,
CommandBase<?> cmd,
Collection<Guid> executedHosts) {
Guid vdsForExecution = getHostForExecution(storagePoolId, executedHosts);
parametersBase.setVdsId(vdsForExecution);
if (cmd != null) {
cmd.getParameters().setVdsRunningOn(vdsForExecution);
cmd.persistCommand(cmd.getParameters().getParentCommand(), cmd.getCallback() != null);
}
}