iot/labs/doris/DorisTest/Program.cs

using Microsoft.EntityFrameworkCore;
using MySql.Data.MySqlClient;
using System;
using System.Diagnostics;
using System.Threading;
using System.Threading.Tasks;

namespace DorisTest
{
    public class TestContext : DbContext
    {
        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            optionsBuilder.UseMySql("Server=localhost;Port=9030;Database=test;Uid=root;Allow User Variables=True;");
        }
    }

    internal class Program
    {
        private static void Main(string[] args)
        {
            //using var db = new TestContext();
            //create database test;
            //use test;
            //CREATE TABLE test
            //(
            //    orderid     VARCHAR(32),
            //    username    VARCHAR(32),
            //    amount      BIGINT DEFAULT '0'
            //)
            //UNIQUE KEY(orderid)
            //distributed by hash(orderid) buckets 1
            //properties(
            //    "replication_num" = "1"
            //);
            for (int i = 0; i < 32; i++)
            {
                var b = i + 1;
                Task.Run(() => UpdateDB(b, 100000));
            }
            while (true)
            {
                Thread.Sleep(15 * 1000);
                Console.WriteLine(DateTime.Now.ToLongTimeString());
            }
        }

        private static void UpdateDB(int b, int num)
        {
            var watch = new Stopwatch();
            var conn = CreateConnection();
            conn.Open();
            var cmd = conn.CreateCommand();
            cmd.CommandTimeout = 60;
            watch.Start();
            for (int i = 0; i < num; i++)
            {
                cmd.CommandText = $"insert into  test values('{Guid.NewGuid().ToString().Replace("-", "")}','{GetChar()}{GetChar()}{GetChar()}',{GetNumber()});";
                try
                {
                    cmd.ExecuteNonQuery();
                    if (i % 10 == 0 || i == num - 1)
                    {
                        watch.Stop();
                        Console.WriteLine(b + ":" + watch.ElapsedMilliseconds + ":" + i.ToString());
                        watch = new Stopwatch();
                        watch.Start();
                    }
                }
                catch (InvalidOperationException ex)
                {
                    Console.WriteLine($"error on thread {b}. {ex.GetType().FullName} :{ex.Message}");
                    conn.Open();
                    cmd = conn.CreateCommand();
                }
                catch (Exception ex)
                {
                    Console.WriteLine($"error on thread {b}. {ex.GetType().FullName} :{ex.Message}");
                    conn = CreateConnection();
                    conn.Open();
                    cmd = conn.CreateCommand();
                }
            }
            cmd.Dispose();
            conn.Close();
        }

        private static MySqlConnection CreateConnection()
        {
            return new MySqlConnection("Server=localhost;Port=9030;Database=test;Uid=root;Allow User Variables=True;");
        }

        private static char GetChar()
        {
            return (char)new Random((int)DateTime.UtcNow.Ticks).Next(97, 122);
        }

        private static int GetNumber()
        {
            return new Random((int)DateTime.UtcNow.Ticks).Next(1, 1000);
        }
    }
}