/**
* produce
* Transfer the user command to the core which will eventually send the command to the server
* handle the command status received by the server
* @param command
* @param <T>
* @throws PlanckDBException
* @throws EntityLockException
*/
public void produce(Command command)
{
if(command.isModeCommand()){
//noinspection SynchronizationOnLocalVariableOrMethodParameter
lock(command){
getCore().consume(command);
CommandStatus status = command.getStatus();
if( ! CommandStatus.success.Equals(status)){
if(CommandStatus.notNodeOwner.Equals(status)){
throw new EntityLockException(status,status.getMessage());
}else{
throw new PlanckDBException(status,status.getMessage());
}
}
try {
Monitor.Wait(command,120000000);
} catch (Exception e) {
throw new PlanckDBException(status,"Fatal exception in command synchronization process ( while waiting for awake notification, an InterruptedException occurred. ");
}
}
}else{
getCore().consume(command);
}
CommandStatus commandStatus =command.getStatus();
if (!CommandStatus.success.Equals(commandStatus))
{
throw new PlanckDBException(commandStatus, commandStatus.getMessage() + " schema : " + sessionMetaData.getSchemaName() + " user " + sessionMetaData.getUserName());
}
}
/**
* this is the heart of the storage,<p>
* It control all the in coming commands.<p>
* The method does the following<p>
* 1. validate the command<p>
* 2. update the version number and the conflict number (if needed)<p>
* 3. push the command to the command queue<p>
*/
public void consume(Command command)
{
// update schema and coreManagerKey in command in case that the schema or coreManagerKey fields in the command are null
if(command.GetSchemaId()<0){
command.setSchemaId(getSessionMetaData().getSchemaId());
}
if(command.GetCoreManagerKey()==null){
command.setCoreManagerKey(getCoreManager().getKey());
}
// you do not have to handle your messages which NetworkProtocolType is multicast
// because you have already handle them
NetworkProtocolType type = command.getNetworkProtocolType();
if(type!=null && isCast(type) && command.GetCoreManagerKey().Equals(getCoreManager().getKey())&&sessionMetaData.GetSessionId()==command.GetSessionId()){
return;
}
//TODO validate message
if(command.isModeCommand()||command.isAtomicModelCommand()){ // model change commands
// set version number or distribute
if(command.getVersion()<0){
distributionManager.produceTcp(command);
int version = command.getVersion();
// return if command is lock or something was wrong
if(version<0|| command.isNotSucceed()){
return;
}
}
if(command.isAtomicModelCommand()){
List<Command> commands = command.getCommands();
atomicContainer.register(command,commands);
foreach (Command newCommand in commands) {
commandQueue.pushCommand(newCommand);
}
}else{
commandQueue.pushCommand(command);
}
}else{
Int32 commandType = command.getCommandType();
if(commandType==PlanckDBConstants.READ_LOCK_COMMAND){
if( ! command.GetCoreManagerKey().Equals(coreManager.getKey())){
List<Command> commands=command.getCommands();
bool entityLock=command.isLocked();
foreach (Command newCommand in commands) {
int entityId=newCommand.getEntityId();
int ownerId=newCommand.getOwnerId();
if(entityLock){
registry.lockEntity(entityId,true,ownerId);
}else{
registry.lockEntity(entityId,false,PlanckDBConstants.NON_ENTITY_OWNER);
}
}
}else{
distributionManager.produceTcp(command);
}
}
}
}