83 lines
2.1 KiB
Markdown
83 lines
2.1 KiB
Markdown
# DbContext 工厂
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> 所属模块：[数据库支持](./概览.md)
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---
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## 1. 本地库工厂
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```csharp
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// Infrastructure/LocalData/IDbContextFactory.cs
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namespace Gpulse.WCT.DataAnalyzer.Core.Infrastructure.LocalData;
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public interface IDbContextFactory
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{
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WctMinerDbContext CreateDbContext();
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}
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```
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工厂实现读取 `Database:LocalPath`（fallback `Database:Path`），支持 SQLite 和 PostgreSQL。
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---
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## 2. 发布库工厂
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```csharp
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// Infrastructure/ReleaseData/IReleaseDbContextFactory.cs
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namespace Gpulse.WCT.DataAnalyzer.Core.Infrastructure.ReleaseData;
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public interface IReleaseDbContextFactory
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{
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ReleaseDbContext CreateDbContext();
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}
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```
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工厂实现读取 `Database:ReleasePath`，支持 SQLite 和 PostgreSQL。PostgreSQL 时使用 `Release*` 前缀配置（`ReleaseHost`, `ReleasePort`, `ReleaseName`, `ReleaseUser`, `ReleasePassword`），未设置时回退到 local 的对应配置。
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---
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## 3. DI 注册
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```csharp
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// Infrastructure/Extensions/ServiceCollectionExtensions.cs
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public static IServiceCollection AddDatabaseServices(
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this IServiceCollection services,
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IConfiguration configuration)
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{
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// 本地库
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services.AddScoped<IDbContextFactory, DbContextFactory>();
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services.AddScoped<WctMinerDbContext>(sp =>
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{
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var factory = sp.GetRequiredService<IDbContextFactory>();
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return factory.CreateDbContext();
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});
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// 发布库（独立）
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services.AddScoped<IReleaseDbContextFactory, ReleaseDbContextFactory>();
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services.AddScoped<ReleaseDbContext>(sp =>
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{
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var factory = sp.GetRequiredService<IReleaseDbContextFactory>();
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return factory.CreateDbContext();
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});
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return services;
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}
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```
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## 4. 启动初始化
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```csharp
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// Program.cs
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using var scope = app.Services.CreateScope();
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// 初始化本地库
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var dbContext = scope.ServiceProvider.GetRequiredService<WctMinerDbContext>();
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await dbContext.Database.EnsureCreatedAsync();
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// 初始化发布库
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var releaseContext = scope.ServiceProvider.GetRequiredService<ReleaseDbContext>();
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await releaseContext.Database.EnsureCreatedAsync();
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// 本地库种子数据
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SeedData.Initialize(dbContext);
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``` |