/**
 * Copyright © 2016-2018 The Thingsboard Authors
 *
 * Licensed 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.thingsboard.server.dao.queue;

import com.datastax.driver.core.Cluster;
import com.datastax.driver.core.HostDistance;
import com.datastax.driver.core.PoolingOptions;
import com.datastax.driver.core.Session;
import com.datastax.driver.core.utils.UUIDs;
import com.google.common.util.concurrent.FutureCallback;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.thingsboard.server.common.msg.TbMsg;
import org.thingsboard.server.common.msg.TbMsgDataType;
import org.thingsboard.server.common.msg.TbMsgMetaData;

import javax.annotation.Nullable;
import java.net.InetSocketAddress;
import java.util.UUID;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicLong;

//@SpringBootApplication
//@EnableAutoConfiguration
//@ComponentScan({"org.thingsboard.rule.engine"})
//@PropertySource("classpath:processing-pipeline.properties")
@Slf4j
public class QueueBenchmark implements CommandLineRunner {

    public static void main(String[] args) {
        try {
            SpringApplication.run(QueueBenchmark.class, args);
        } catch (Throwable th) {
            th.printStackTrace();
            System.exit(0);
        }
    }

    @Autowired
    private MsqQueue msqQueue;

    @Override
    public void run(String... strings) throws Exception {
        System.out.println("It works + " + msqQueue);


        long start = System.currentTimeMillis();
        int msgCount = 10000000;
        AtomicLong count = new AtomicLong(0);
        ExecutorService service = Executors.newFixedThreadPool(100);

        CountDownLatch latch = new CountDownLatch(msgCount);
        for (int i = 0; i < msgCount; i++) {
            service.submit(() -> {
                boolean isFinished = false;
                while (!isFinished) {
                    try {
                        TbMsg msg = randomMsg();
                        UUID nodeId = UUIDs.timeBased();
                        ListenableFuture<Void> put = msqQueue.put(msg, nodeId, 100L);
//                    ListenableFuture<Void> put = msqQueue.ack(msg, nodeId, 100L);
                        Futures.addCallback(put, new FutureCallback<Void>() {
                            @Override
                            public void onSuccess(@Nullable Void result) {
                                latch.countDown();
                            }

                            @Override
                            public void onFailure(Throwable t) {
//                                t.printStackTrace();
                                System.out.println("onFailure, because:" + t.getMessage());
                                latch.countDown();
                            }
                        });
                        isFinished = true;
                    } catch (Throwable th) {
//                        th.printStackTrace();
                        System.out.println("Repeat query, because:" + th.getMessage());
//                        latch.countDown();
                    }
                }
            });
        }

        long prev = 0L;
        while (latch.getCount() != 0) {
            TimeUnit.SECONDS.sleep(1);
            long curr = latch.getCount();
            long rps = prev - curr;
            prev = curr;
            System.out.println("rps = " + rps);
        }

        long end = System.currentTimeMillis();
        System.out.println("final rps = " + (msgCount / (end - start) * 1000));

        System.out.println("Finished");

    }

    private TbMsg randomMsg() {
        TbMsgMetaData metaData = new TbMsgMetaData();
        metaData.putValue("key", "value");
        String dataStr = "someContent";
        return new TbMsg(UUIDs.timeBased(), "type", null, metaData, TbMsgDataType.JSON, dataStr.getBytes());
    }

    @Bean
    public Session session() {
        Cluster thingsboard = Cluster.builder()
                .addContactPointsWithPorts(new InetSocketAddress("127.0.0.1", 9042))
                .withClusterName("thingsboard")
//                .withSocketOptions(socketOpts.getOpts())
                .withPoolingOptions(new PoolingOptions()
                        .setMaxRequestsPerConnection(HostDistance.LOCAL, 32768)
                        .setMaxRequestsPerConnection(HostDistance.REMOTE, 32768)).build();

        Session session = thingsboard.connect("thingsboard");
        return session;
    }

    @Bean
    public int defaultTtl() {
        return 6000;
    }

}
