/**
* 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) throws PlanckDBException {
// 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
final NetworkProtocolType type = command.getNetworkProtocolType();
if (type != null
&& type.isCast()
&& 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);
for (Command newCommand : commands) {
commandQueue.pushCommand(newCommand);
}
} else {
commandQueue.pushCommand(command);
}
} else {
Integer commandType = command.getCommandType();
if (commandType == READ_LOCK_COMMAND) {
if (!command.getCoreManagerKey().equals(coreManager.getKey())) {
List<Command> commands = command.getCommands();
boolean lock = command.isLocked();
for (Command newCommand : commands) {
int entityId = newCommand.getEntityId();
int ownerId = newCommand.getOwnerId();
if (lock) {
registry.lockEntity(entityId, true, ownerId);
} else {
registry.lockEntity(entityId, false, NON_ENTITY_OWNER);
}
}
} else {
distributionManager.produceTcp(command);
}
}
}
}
