/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.shardingsphere.test.e2e.agent.engine.util;

import lombok.AccessLevel;
import lombok.NoArgsConstructor;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.stream.Collectors;

/**
 * Agent E2E HTTP utility class.
 */
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public final class AgentE2EHttpUtils {
    
    /**
     * Query response.
     *
     * @param url query URL
     * @return response
     * @throws IOException IO exception
     */
    public static String query(final String url) throws IOException {
        HttpURLConnection urlConnection = (HttpURLConnection) new URL(url).openConnection();
        try {
            urlConnection.setRequestMethod("GET");
            urlConnection.setConnectTimeout(10 * 1000);
            if (200 == urlConnection.getResponseCode()) {
                try (
                        InputStreamReader inputStreamReader = new InputStreamReader(urlConnection.getInputStream());
                        BufferedReader bufferedReader = new BufferedReader(inputStreamReader)) {
                    return bufferedReader.lines().collect(Collectors.joining());
                }
            }
        } finally {
            if (null != urlConnection) {
                urlConnection.disconnect();
            }
        }
        return "";
    }
}
