net.kaikk.mc.uuidprovider.NameFetcher.java Source code

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Here is the source code for net.kaikk.mc.uuidprovider.NameFetcher.java

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/*
 * Copyright (c) 2015 Nate Mortensen
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package net.kaikk.mc.uuidprovider;

import com.google.common.collect.ImmutableList;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;

import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.Callable;

public class NameFetcher implements Callable<Map<UUID, String>> {
    private static final String PROFILE_URL = "https://sessionserver.mojang.com/session/minecraft/profile/";
    private final JSONParser jsonParser = new JSONParser();
    private final List<UUID> uuids;

    public NameFetcher(List<UUID> uuids) {
        this.uuids = ImmutableList.copyOf(uuids);
    }

    @Override
    public Map<UUID, String> call() throws Exception {
        Map<UUID, String> uuidStringMap = new HashMap<UUID, String>();
        for (UUID uuid : uuids) {
            HttpURLConnection connection = (HttpURLConnection) new URL(
                    PROFILE_URL + uuid.toString().replace("-", "")).openConnection();
            JSONObject response = (JSONObject) jsonParser.parse(new InputStreamReader(connection.getInputStream()));
            String name = (String) response.get("name");
            if (name == null) {
                continue;
            }
            String cause = (String) response.get("cause");
            String errorMessage = (String) response.get("errorMessage");
            if (cause != null && cause.length() > 0) {
                throw new IllegalStateException(errorMessage);
            }
            uuidStringMap.put(uuid, name);
        }
        return uuidStringMap;
    }
}