So I am building a rank system for forge servers. Very basic as of right now. When the player joins the server it automatically serializes the arguments required for /ranks so suggestions do work. However if and admin creates a new rank, the rank wont be suggested till the player disconnects and rejoins(retrieves new serialized arguments).  Is there a way I can force the reserialization of ArgumentTypes to send to clients?

Example: Look at the images attached! First two images are on the first connection. I had to leave and rejoin to get the suggestion to work for the third image.

/ranks command:

	@Override
	protected void initCommand() {
		command = Commands.literal("ranks").requires(
				(commandContext) -> {return commandContext.hasPermission(3);}
				).then(join()).then(create()).then(delete()).then(modify());
	}
	
	private LiteralArgumentBuilder<CommandSourceStack> join(){
		return Commands.literal("join").then(Commands.argument("player", EntityArgument.player()).then(Commands.argument("rank", IterableArgumentType.choices(ModStatics.rankManager.getAvaliableRanks())).executes(
				(commandContext) -> { return joinRank(commandContext);}
				)));
	}

	private LiteralArgumentBuilder<CommandSourceStack> create(){
		return Commands.literal("create").then(Commands.argument("name", MessageArgument.message()).executes(
				(commandContext) -> { return createRank(commandContext);}
				));
	}
	
	private LiteralArgumentBuilder<CommandSourceStack> delete(){
		return Commands.literal("delete").then(Commands.argument("rank", IterableArgumentType.choices(ModStatics.rankManager.getAvaliableRanks())).executes(
				(commandContext) -> { return deleteRank(commandContext);}
				));
	}
	
	private LiteralArgumentBuilder<CommandSourceStack> modify(){
		return Commands.literal("modify").then(Commands.argument("rank", IterableArgumentType.choices(ModStatics.rankManager.getAvaliableRanks()))
				.then(modifySetColor())
				.then(modifySetColoredChat())
				.then(modifyAddCommand())
				.then(modifyRemoveCommand()));
	}
	
	private LiteralArgumentBuilder<CommandSourceStack> modifySetColor(){
		return Commands.literal("setColor").then(Commands.argument("color", ColorArgument.color()).executes(
				(commandContext) -> {return setColor(commandContext);}
				));
	}
	
	private LiteralArgumentBuilder<CommandSourceStack> modifySetColoredChat(){
		return Commands.literal("setColoredChat")
				.then(Commands.literal("true").executes(
				(commandContext) -> {return setColoredChat(commandContext,true);}
				))
				.then(Commands.literal("false").executes(
						(commandContext) -> {return setColoredChat(commandContext, false);}
				));
	}
	
	private LiteralArgumentBuilder<CommandSourceStack> modifyAddCommand(){
		return Commands.literal("addCommand").then(Commands.argument("command", IterableArgumentType.choices(ModStatics.modCommandList.getAvaliable())).executes(
				(commandContext) -> {return addCommand(commandContext);}
				));
	}
	
	private LiteralArgumentBuilder<CommandSourceStack> modifyRemoveCommand(){
		return Commands.literal("removeCommand").then(Commands.argument("command", IterableArgumentType.choices(ModStatics.modCommandList.getAvaliable())).executes(
				(commandContext) -> {return removeCommand(commandContext);}
				));
	}
	
	private int joinRank(CommandContext<CommandSourceStack> commandContext) throws CommandSyntaxException {
		String name = IterableArgumentType.getChoice(commandContext, "rank");
		Player player = EntityArgument.getPlayer(commandContext, "player");
		System.out.println(player.getUUID().toString() + " : " + name);
		if(ModStatics.rankManager.joinRank(player.getUUID(), name)) {
			commandContext.getSource().sendSuccess(new TextComponent("Joined rank ["+name+"] !"),true);
		}else {
			commandContext.getSource().sendFailure(new TextComponent("Failed to join rank ["+name+"] !"));
		}
		return 1;
	}
	
	private static int createRank(CommandContext<CommandSourceStack> commandContext) throws CommandSyntaxException {
		Component message = MessageArgument.getMessage(commandContext, "name");
		String name = message.getContents();
		if(ModStatics.rankManager.createRank(name)) {
			commandContext.getSource().sendSuccess(new TextComponent("Created rank ["+name+"] !"),true);
		}else {
			commandContext.getSource().sendFailure(new TextComponent("Failed to create rank ["+name+"] !"));
		}
		return 1;
	}
	
	private static int deleteRank(CommandContext<CommandSourceStack> commandContext) {
		String name = IterableArgumentType.getChoice(commandContext, "rank");
		if(ModStatics.rankManager.deleteRank(name)) {
			commandContext.getSource().sendSuccess(new TextComponent("Deleted rank ["+name+"] !"),true);
		}else {
			commandContext.getSource().sendFailure(new TextComponent("Failed to delete rank ["+name+"] !"));
		}
		return 1;
	}
	
	private static int addCommand(CommandContext<CommandSourceStack> commandContext) {
		String name = IterableArgumentType.getChoice(commandContext, "rank");
		String literal = IterableArgumentType.getChoice(commandContext, "command");
		
		if(ModStatics.rankManager.addCommandToRank(name, literal)) {
			commandContext.getSource().sendSuccess(new TextComponent("Added command /"+literal+" to rank ["+name+"] !"),true);
		}else {
			commandContext.getSource().sendFailure(new TextComponent("Failed to add command /"+literal+" to rank ["+name+"] !"));
		}
		
		return 1;
	}
	
	private static int removeCommand(CommandContext<CommandSourceStack> commandContext) {
		String name = IterableArgumentType.getChoice(commandContext, "rank");
		String literal = IterableArgumentType.getChoice(commandContext, "command");
		
		if(ModStatics.rankManager.removeCommandFromRank(name, literal)) {
			commandContext.getSource().sendSuccess(new TextComponent("Removed command "+literal+" to rank ["+name+"] !"),true);
		}else {
			commandContext.getSource().sendFailure(new TextComponent("Failed to removed command "+literal+" from rank ["+name+"] !"));
		}
		
		return 1;
	}
	
	private static int setColor(CommandContext<CommandSourceStack> commandContext) {
		String name = IterableArgumentType.getChoice(commandContext, "rank");
		ChatFormatting formatting = ColorArgument.getColor(commandContext, "color");
		if(ModStatics.rankManager.getRank(name).setColor(formatting)) {
			commandContext.getSource().sendSuccess(new TextComponent("Updated rank color!"),true);
		}else {
			commandContext.getSource().sendFailure(new TextComponent("Failed to update rank color!"));
		}
		return 1;
	}
	
	private static int setColoredChat(CommandContext<CommandSourceStack> commandContext, boolean b) {
		String name = IterableArgumentType.getChoice(commandContext, "rank");
		
		if(ModStatics.rankManager.setRankColoredChat(name, b)) {
			commandContext.getSource().sendSuccess(new TextComponent("Updated rank canColoredChat!"),true);
		}else {
			commandContext.getSource().sendFailure(new TextComponent("Failed to update rank canColoredChat!"));
		}
		return 1;
	}

IterableArgumentType:

private Iterable<String> choices;
	
	private IterableArgumentType(Iterable<String> choices) {	
		this.choices = choices;
	}
	
	public static IterableArgumentType choices(Iterable<String> choices) {
		return new IterableArgumentType(choices);
	}
	
	public static String getChoice(CommandContext<CommandSourceStack> commandContext, String name) {
	      return commandContext.getArgument(name, String.class);
	}
	
	@Override
	public String parse(StringReader reader) throws CommandSyntaxException {
		String string = reader.readString();
		return string;
	}

	public <S> CompletableFuture<Suggestions> listSuggestions(CommandContext<S> commandContext, SuggestionsBuilder suggestionBuilder) {
		return SharedSuggestionProvider.suggest(choices, suggestionBuilder);
	}
	
	public Iterable<String> getChoices(){
		return choices;
	}
	
	public static class Serializer implements ArgumentSerializer<IterableArgumentType>{
		
		private String delimiter = "-";
		
		public String convertToString(Iterable<String> choices) {
			StringBuilder builder = new StringBuilder();
			
			ArrayList<String> array_choices = new ArrayList<String>();
			for(String choice : choices) {
				array_choices.add(choice);
			}
			for(int i = 0; i < array_choices.size(); i++) {
				builder.append(array_choices.get(i));
				if(i != array_choices.size()-1) {
					builder.append(delimiter);
				}
			}
			
			return builder.toString();
		}
		
		public Iterable<String> convertToIterable(String choices){
			String[] array_choices = choices.split(delimiter);
			
			Hashtable<String, Byte> hashtable_choices = new Hashtable<String, Byte>();
			for(String choice : array_choices) {
				hashtable_choices.put(choice, (byte) 0);
			}
			
			return hashtable_choices.keySet();
		}
		
        @Override
        public void serializeToNetwork(IterableArgumentType argument, FriendlyByteBuf buffer)
        {
            buffer.writeUtf(convertToString(argument.getChoices()));
        }

        @Override
        public IterableArgumentType deserializeFromNetwork(FriendlyByteBuf buffer)
        {
            String utf = buffer.readUtf();
			return new IterableArgumentType(convertToIterable(utf));
        }

        @Override
        public void serializeToJson(IterableArgumentType argument, JsonObject json)
        {
            json.addProperty("iterableargumenttype", convertToString(argument.getChoices()));
        }
    }

 

58 minutes ago, diesieben07 said:

I would store the ranks separately and sync them in a separate packet. Then you can just reference that separately stored "thing" from your argument type. Otherwise you'd have to resend the entire command tree.

I found a solution! I modified the /ranks command to use a custom StringArgument. StringArgument is empty and wont have any suggestions. Then I follow up this Commands.argument with a .suggest() that calls a function  to return uptodate suggestions.

Did not have to mess with packets at all!

This is new code incase anyone in the future needs this!

Command /ranks:

public class RankCommands extends ModCommand{

	@Override
	protected void initCommand() {
		command = Commands.literal("ranks").requires(
				(commandContext) -> {return commandContext.hasPermission(3);}
				).then(join()).then(create()).then(delete()).then(modify());
	}
	
	private LiteralArgumentBuilder<CommandSourceStack> join(){
		return Commands.literal("join").then(Commands.argument("player", EntityArgument.player()).then(Commands.argument("rank", StringArgument.string()).suggests(CustomSuggestionProvider::getRankSuggestions).executes(
				(commandContext) -> { return joinRank(commandContext);}
				)));
	}

	private LiteralArgumentBuilder<CommandSourceStack> create(){
		return Commands.literal("create").then(Commands.argument("name", StringArgument.string()).executes(
				(commandContext) -> { return createRank(commandContext);}
				));
	}
	
	private LiteralArgumentBuilder<CommandSourceStack> delete(){
		return Commands.literal("delete").then(Commands.argument("rank", StringArgument.string()).suggests(CustomSuggestionProvider::getRankSuggestions).executes(
				(commandContext) -> { return deleteRank(commandContext);}
				));
	}
	
	private LiteralArgumentBuilder<CommandSourceStack> modify(){
		return Commands.literal("modify").then(Commands.argument("rank", StringArgument.string()).suggests(CustomSuggestionProvider::getRankSuggestions)
				.then(modifySetColor())
				.then(modifySetColoredChat())
				.then(modifyAddCommand())
				.then(modifyRemoveCommand()));
	}
	
	private LiteralArgumentBuilder<CommandSourceStack> modifySetColor(){
		return Commands.literal("setColor").then(Commands.argument("color", ColorArgument.color()).executes(
				(commandContext) -> {return setColor(commandContext);}
				));
	}
	
	private LiteralArgumentBuilder<CommandSourceStack> modifySetColoredChat(){
		return Commands.literal("setColoredChat")
				.then(Commands.literal("true").executes(
				(commandContext) -> {return setColoredChat(commandContext,true);}
				))
				.then(Commands.literal("false").executes(
						(commandContext) -> {return setColoredChat(commandContext, false);}
				));
	}
	
	private LiteralArgumentBuilder<CommandSourceStack> modifyAddCommand(){
		return Commands.literal("addCommand").then(Commands.argument("command", StringArgument.string()).suggests(CustomSuggestionProvider::getCommandSuggestions).executes(
				(commandContext) -> {return addCommand(commandContext);}
				));
	}
	
	private LiteralArgumentBuilder<CommandSourceStack> modifyRemoveCommand(){
		return Commands.literal("removeCommand").then(Commands.argument("command", StringArgument.string()).suggests(CustomSuggestionProvider::getCommandSuggestions).executes(
				(commandContext) -> {return removeCommand(commandContext);}
				));
	}
	
	private int joinRank(CommandContext<CommandSourceStack> commandContext) throws CommandSyntaxException {
		String name = StringArgument.getString(commandContext, "rank");
		Player player = EntityArgument.getPlayer(commandContext, "player");
		if(ModStatics.rankManager.joinRank(player.getUUID(), name)) {
			commandContext.getSource().sendSuccess(new TextComponent("Joined rank ["+name+"] !"),true);
		}else {
			commandContext.getSource().sendFailure(new TextComponent("Failed to join rank ["+name+"] !"));
		}
		return 1;
	}
	
	private static int createRank(CommandContext<CommandSourceStack> commandContext) throws CommandSyntaxException {
		String name = StringArgument.getString(commandContext, "name");
		if(ModStatics.rankManager.createRank(name)) {
			commandContext.getSource().sendSuccess(new TextComponent("Created rank ["+name+"] !"),true);
		}else {
			commandContext.getSource().sendFailure(new TextComponent("Failed to create rank ["+name+"] !"));
		}
		return 1;
	}
	
	private static int deleteRank(CommandContext<CommandSourceStack> commandContext) {
		String name = StringArgument.getString(commandContext, "rank");
		if(ModStatics.rankManager.deleteRank(name)) {
			commandContext.getSource().sendSuccess(new TextComponent("Deleted rank ["+name+"] !"),true);
		}else {
			commandContext.getSource().sendFailure(new TextComponent("Failed to delete rank ["+name+"] !"));
		}
		return 1;
	}
	
	private static int addCommand(CommandContext<CommandSourceStack> commandContext) {
		String name = StringArgument.getString(commandContext, "rank");
		String literal = StringArgument.getString(commandContext, "command");
		
		if(ModStatics.rankManager.addCommandToRank(name, literal)) {
			commandContext.getSource().sendSuccess(new TextComponent("Added command /"+literal+" to rank ["+name+"] !"),true);
		}else {
			commandContext.getSource().sendFailure(new TextComponent("Failed to add command /"+literal+" to rank ["+name+"] !"));
		}
		
		return 1;
	}
	
	private static int removeCommand(CommandContext<CommandSourceStack> commandContext) {
		String name = StringArgument.getString(commandContext, "rank");
		String literal = StringArgument.getString(commandContext, "command");
		
		if(ModStatics.rankManager.removeCommandFromRank(name, literal)) {
			commandContext.getSource().sendSuccess(new TextComponent("Removed command "+literal+" to rank ["+name+"] !"),true);
		}else {
			commandContext.getSource().sendFailure(new TextComponent("Failed to removed command "+literal+" from rank ["+name+"] !"));
		}
		
		return 1;
	}
	
	private static int setColor(CommandContext<CommandSourceStack> commandContext) {
		String name = StringArgument.getString(commandContext, "rank");
		ChatFormatting formatting = ColorArgument.getColor(commandContext, "color");
		if(ModStatics.rankManager.getRank(name).setColor(formatting)) {
			commandContext.getSource().sendSuccess(new TextComponent("Updated rank color!"),true);
		}else {
			commandContext.getSource().sendFailure(new TextComponent("Failed to update rank color!"));
		}
		return 1;
	}
	
	private static int setColoredChat(CommandContext<CommandSourceStack> commandContext, boolean b) {
		String name = StringArgument.getString(commandContext, "rank");
		
		if(ModStatics.rankManager.setRankColoredChat(name, b)) {
			commandContext.getSource().sendSuccess(new TextComponent("Updated rank canColoredChat!"),true);
		}else {
			commandContext.getSource().sendFailure(new TextComponent("Failed to update rank canColoredChat!"));
		}
		return 1;
	}

}

StringArgument:

public class StringArgument implements ArgumentType<String>{

	private StringArgument() {
		
	}
	
	public static StringArgument string() {
		return new StringArgument();
	}
	
	public static String getString(CommandContext<CommandSourceStack> commandContext, String name) {
	      return commandContext.getArgument(name, String.class);
	}
	
	@Override
	public String parse(StringReader reader) throws CommandSyntaxException {
		String string = reader.readString();
		return string;
	}
	
	public static class Serializer implements ArgumentSerializer<StringArgument>{

        @Override
        public StringArgument deserializeFromNetwork(FriendlyByteBuf buffer)
        {
			return new StringArgument();
        }

		@Override
		public void serializeToNetwork(StringArgument p_121579_, FriendlyByteBuf p_121580_) {

		}

		@Override
		public void serializeToJson(StringArgument p_121577_, JsonObject p_121578_) {

		}
    }

}

CustomSuggestionProvider:

public class CustomSuggestionProvider{
	
	public static CompletableFuture getRankSuggestions(CommandContext context, SuggestionsBuilder builder)throws CommandSyntaxException {
		Iterable<String> choices = ModStatics.rankManager.getAvaliableRanks();
		for(String choice : choices) {
			builder.suggest(choice);
		}
		return builder.buildFuture();
	}
	
	public static CompletableFuture getCommandSuggestions(CommandContext context, SuggestionsBuilder builder)throws CommandSyntaxException {
		Iterable<String> choices = ModStatics.modCommandList.getAvaliable();
		for(String choice : choices) {
			builder.suggest(choice);
		}
		return builder.buildFuture();
	}

}

Also don't forget to registry the custom argument type:

ArgumentTypes.register("se:stringargument", StringArgument.class, new StringArgument.Serializer());