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‎ShardingCore.sln‎

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@@ -73,6 +73,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ShardingCore3", "src3\Shard
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EndProject
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Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ShardingCore2", "src2\ShardingCore2\ShardingCore2.csproj", "{F0393C32-2285-4F47-AC61-C1BA1CAC269D}"
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Sample.MySQLDataSourceOnly", "samples\Sample.MySQLDataSourceOnly\Sample.MySQLDataSourceOnly.csproj", "{3B5A4B03-5190-41A8-8E4B-F95A79A5C018}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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{F0393C32-2285-4F47-AC61-C1BA1CAC269D}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{F0393C32-2285-4F47-AC61-C1BA1CAC269D}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{F0393C32-2285-4F47-AC61-C1BA1CAC269D}.Release|Any CPU.Build.0 = Release|Any CPU
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{3B5A4B03-5190-41A8-8E4B-F95A79A5C018}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{3B5A4B03-5190-41A8-8E4B-F95A79A5C018}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{3B5A4B03-5190-41A8-8E4B-F95A79A5C018}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{3B5A4B03-5190-41A8-8E4B-F95A79A5C018}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
@@ -219,6 +225,7 @@ Global
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{E5E48D52-CAD3-42F0-82CD-A2A6180F3C4D} = {53D07876-A791-46AE-8381-08557593693D}
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{B59909AD-8885-40F3-9454-6C8433463BCC} = {51E1D067-3E81-4815-94F2-F8ABBE80881E}
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{F0393C32-2285-4F47-AC61-C1BA1CAC269D} = {B11D7DF7-A907-407E-8BF1-35B430413557}
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{3B5A4B03-5190-41A8-8E4B-F95A79A5C018} = {EDF8869A-C1E1-491B-BC9F-4A33F4DE1C73}
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {8C07A667-E8B4-43C7-8053-721584BAD291}

‎samples/Sample.MySQLDataSourceOnly/Controllers/WeatherForecastController.cs‎

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using Microsoft.AspNetCore.Mvc;
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using Sample.MySQLDataSourceOnly.Domain;
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namespace Sample.MySQLDataSourceOnly.Controllers;
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[ApiController]
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[Route("[controller]")]
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public class WeatherForecastController : ControllerBase
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{
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private static readonly string[] Summaries = new[]
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{
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"Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
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};
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private readonly ILogger<WeatherForecastController> _logger;
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private readonly MyDbContext _myDbContext;
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public WeatherForecastController(ILogger<WeatherForecastController> logger,MyDbContext myDbContext)
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{
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_logger = logger;
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_myDbContext = myDbContext;
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}
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[HttpGet(Name = "GetWeatherForecast")]
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public IEnumerable<WeatherForecast> Get()
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{
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var user = _myDbContext.Set<SysUser>().FirstOrDefault(o=>o.Id=="1");
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user.Name = "456"+DateTime.Now.ToString();
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_myDbContext.SaveChanges();
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return Enumerable.Range(1, 5).Select(index => new WeatherForecast
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{
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Date = DateOnly.FromDateTime(DateTime.Now.AddDays(index)),
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TemperatureC = Random.Shared.Next(-20, 55),
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Summary = Summaries[Random.Shared.Next(Summaries.Length)]
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})
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.ToArray();
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}
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}

‎samples/Sample.MySQLDataSourceOnly/Domain/MyDbContext.cs‎

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using Microsoft.EntityFrameworkCore;
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using ShardingCore.Sharding;
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namespace Sample.MySQLDataSourceOnly.Domain;
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public class MyDbContext : AbstractShardingDbContext
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{
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public MyDbContext(DbContextOptions<MyDbContext> options) : base(options)
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{
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}
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protected override void OnModelCreating(ModelBuilder modelBuilder)
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{
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base.OnModelCreating(modelBuilder);
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modelBuilder.Entity<SysUser>(entity =>
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{
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entity.HasKey(o => o.Id);
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entity.Property(o => o.Id).IsRequired().IsUnicode(false).HasMaxLength(50);
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entity.Property(o => o.Name).IsRequired().IsUnicode(false).HasMaxLength(50);
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entity.Property(o => o.Area).IsRequired().IsUnicode(false).HasMaxLength(50);
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entity.ToTable(nameof(SysUser));
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});
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}
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}

‎samples/Sample.MySQLDataSourceOnly/Domain/SysUser.cs‎

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namespace Sample.MySQLDataSourceOnly.Domain;
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public class SysUser
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{
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public string Id { get; set; }
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public string Name { get; set; }
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public string Area { get; set; }
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}

‎samples/Sample.MySQLDataSourceOnly/Domain/SysUserVirtualDataSourceRoute.cs‎

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using ShardingCore.Core.EntityMetadatas;
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using ShardingCore.Core.VirtualRoutes;
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using ShardingCore.Core.VirtualRoutes.DataSourceRoutes.Abstractions;
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namespace Sample.MySQLDataSourceOnly.Domain;
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public class SysUserVirtualDataSourceRoute : AbstractShardingOperatorVirtualDataSourceRoute<SysUser, string>
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{
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private readonly List<string> _dataSources = new List<string>()
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{
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"A", "B", "C"
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};
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protected string ConvertToShardingKey(object shardingKey)
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{
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return shardingKey?.ToString() ?? string.Empty;
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}
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//我们设置区域就是数据库
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public override string ShardingKeyToDataSourceName(object shardingKey)
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{
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return ConvertToShardingKey(shardingKey);
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}
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public override List<string> GetAllDataSourceNames()
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{
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return _dataSources;
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}
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public override bool AddDataSourceName(string dataSourceName)
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{
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if (_dataSources.Any(o => o == dataSourceName))
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return false;
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_dataSources.Add(dataSourceName);
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return true;
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}
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public override Func<string, bool> GetRouteToFilter(string shardingKey, ShardingOperatorEnum shardingOperator)
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{
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var t = ShardingKeyToDataSourceName(shardingKey);
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switch (shardingOperator)
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{
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case ShardingOperatorEnum.Equal: return tail => tail == t;
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default:
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{
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return tail => true;
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}
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}
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}
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public override void Configure(EntityMetadataDataSourceBuilder<SysUser> builder)
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{
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builder.ShardingProperty(o => o.Area);
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}
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}

‎samples/Sample.MySQLDataSourceOnly/Program.cs‎

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using Microsoft.EntityFrameworkCore;
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using Sample.MySQLDataSourceOnly.Domain;
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using ShardingCore;
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var builder = WebApplication.CreateBuilder(args);
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// Add services to the container.
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builder.Services.AddControllers();
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// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
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builder.Services.AddEndpointsApiExplorer();
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builder.Services.AddSwaggerGen();
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builder.Services.AddShardingDbContext<MyDbContext>()
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.UseRouteConfig(o =>
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{
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//o.CreateShardingTableOnStart = true;
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//o.EnsureCreatedWithOutShardingTable = true;
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o.AddShardingDataSourceRoute<SysUserVirtualDataSourceRoute>();
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})
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.UseConfig((sp,op) =>
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{
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var loggerFactory = sp.ApplicationServiceProvider.GetService<ILoggerFactory>();
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//op.ConfigId = "c1";
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op.UseShardingQuery((conStr, builder) =>
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{
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builder.UseMySql(conStr,new MySqlServerVersion(new Version()))
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.UseLoggerFactory(loggerFactory).EnableSensitiveDataLogging();
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});
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op.UseShardingTransaction((connection, builder) =>
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{
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builder.UseMySql(connection,new MySqlServerVersion(new Version()))
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.UseLoggerFactory(loggerFactory).EnableSensitiveDataLogging();;
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});
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//op.ReplaceTableEnsureManager(sp => new SqlServerTableEnsureManager<MyDbContext>());
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op.AddDefaultDataSource("A", @"server=127.0.0.1;port=3306;database=onlyds1;userid=root;password=root;");
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op.AddExtraDataSource(sp =>
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{
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return new Dictionary<string, string>()
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{
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{
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"B",
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@"server=127.0.0.1;port=3306;database=onlyds2;userid=root;password=root;"
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},
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{
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"C",
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@"server=127.0.0.1;port=3306;database=onlyds3;userid=root;password=root;"
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},
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};
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});
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}).AddShardingCore();
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var app = builder.Build();
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// Configure the HTTP request pipeline.
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if (app.Environment.IsDevelopment())
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{
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app.UseSwagger();
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app.UseSwaggerUI();
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}
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app.UseHttpsRedirection();
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app.UseAuthorization();
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app.MapControllers();
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app.Services.UseAutoTryCompensateTable();
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// using (var serviceScope = app.Services.CreateScope())
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// {
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// var myDbContext = serviceScope.ServiceProvider.GetService<MyDbContext>();
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// myDbContext.Database.EnsureCreated();
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// myDbContext.Add(new SysUser() { Id = "1", Area = "A", Name = "name" });
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// myDbContext.SaveChanges();
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// }
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app.Run();

‎samples/Sample.MySQLDataSourceOnly/Properties/launchSettings.json‎

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{
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"$schema": "https://json.schemastore.org/launchsettings.json",
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"iisSettings": {
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"windowsAuthentication": false,
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"anonymousAuthentication": true,
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"iisExpress": {
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"applicationUrl": "http://localhost:35669",
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"sslPort": 44323
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}
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},
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"profiles": {
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"http": {
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"commandName": "Project",
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"dotnetRunMessages": true,
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"launchBrowser": true,
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"launchUrl": "swagger",
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"applicationUrl": "http://localhost:5029",
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"environmentVariables": {
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"ASPNETCORE_ENVIRONMENT": "Development"
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}
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},
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"https": {
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"commandName": "Project",
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"dotnetRunMessages": true,
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"launchBrowser": true,
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"launchUrl": "swagger",
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"applicationUrl": "https://localhost:7187;http://localhost:5029",
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"environmentVariables": {
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"ASPNETCORE_ENVIRONMENT": "Development"
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}
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},
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"IIS Express": {
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"commandName": "IISExpress",
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"launchBrowser": true,
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"launchUrl": "swagger",
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"environmentVariables": {
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"ASPNETCORE_ENVIRONMENT": "Development"
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}
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}
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}
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}

‎samples/Sample.MySQLDataSourceOnly/Sample.MySQLDataSourceOnly.csproj‎

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<Project Sdk="Microsoft.NET.Sdk.Web">
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<PropertyGroup>
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<TargetFramework>net7.0</TargetFramework>
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<Nullable>enable</Nullable>
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<ImplicitUsings>enable</ImplicitUsings>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="7.0.0" />
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<PackageReference Include="Pomelo.EntityFrameworkCore.MySql" Version="7.0.0" />
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<PackageReference Include="Swashbuckle.AspNetCore" Version="6.4.0" />
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</ItemGroup>
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<ItemGroup>
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<ProjectReference Include="..\..\src\ShardingCore\ShardingCore.csproj" />
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</ItemGroup>
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</Project>

‎samples/Sample.MySQLDataSourceOnly/WeatherForecast.cs‎

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namespace Sample.MySQLDataSourceOnly;
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public class WeatherForecast
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{
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public DateOnly Date { get; set; }
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public int TemperatureC { get; set; }
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public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
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public string? Summary { get; set; }
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}

‎samples/Sample.MySQLDataSourceOnly/appsettings.Development.json‎

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{
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"Logging": {
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"LogLevel": {
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"Default": "Information",
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"Microsoft.AspNetCore": "Warning"
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}
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}
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}

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