package com.ankurm.gateway;

import java.util.List;
import java.util.Map;

/** Maps a model hint to an ordered list of targets. An unknown hint is an error, not a default. */
public final class Routes {

    private final Map<String, List<Target>> table;

    public Routes(Map<String, List<Target>> table) {
        this.table = Map.copyOf(table);
    }

    public List<Target> get(String hint) {
        List<Target> t = table.get(hint);
        if (t == null) {
            throw new UnknownHintException(hint, table.keySet());
        }
        return t;
    }
}