60 lines
2.4 KiB
C#
60 lines
2.4 KiB
C#
using Microsoft.EntityFrameworkCore;
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namespace FileShare_EFCore.Database
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{
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/// <summary>
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/// 数据库提供程序注册表 —— 统一注册所有支持的提供程序配置委托。
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/// 具体使用哪个提供程序由各宿主项目决定：
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/// FileShare-API：从 appsettings.json 的 DatabaseConfiguration 节读取；
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/// FileShare-PC ：固定使用 SQLite。
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/// </summary>
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public static class DatabaseProviderRegistry
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{
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/// <summary>
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/// 提供程序配置委托：optionsBuilder, connectionString, timeout → void
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/// </summary>
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public delegate void ProviderConfigurator(DbContextOptionsBuilder optionsBuilder, string connectionString, int timeout);
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/// <summary>
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/// 保存已注册的数据库提供程序及其配置委托。
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/// </summary>
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private static readonly Dictionary<DatabaseProvider, ProviderConfigurator> _providers = new();
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/// <summary>
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/// 注册一个数据库提供程序。
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/// </summary>
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public static void Register(DatabaseProvider provider, ProviderConfigurator configurator)
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{
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_providers[provider] = configurator;
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}
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/// <summary>
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/// 尝试获取注册的提供程序配置。
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/// </summary>
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public static bool TryGet(DatabaseProvider provider, out ProviderConfigurator configurator)
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{
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return _providers.TryGetValue(provider, out configurator!);
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}
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/// <summary>
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/// 注册所有内置提供程序的默认配置（四个包均已内置在 FileShare-EFCore 中）。
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/// 注册完成后由调用方根据自身需求选择具体的 <see cref="DatabaseProvider"/>。
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/// </summary>
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public static void RegisterDefaults()
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{
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Register(DatabaseProvider.SQLite, (opts, cs, timeout) =>
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opts.UseSqlite(cs, o => o.CommandTimeout(timeout)));
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Register(DatabaseProvider.SqlServer, (opts, cs, timeout) =>
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opts.UseSqlServer(cs, o => { o.CommandTimeout(timeout); o.EnableRetryOnFailure(3); }));
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Register(DatabaseProvider.PostgreSQL, (opts, cs, timeout) =>
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opts.UseNpgsql(cs, o => { o.CommandTimeout(timeout); o.EnableRetryOnFailure(3); }));
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Register(DatabaseProvider.MySQL, (opts, cs, timeout) =>
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opts.UseMySQL(cs, o => o.CommandTimeout(timeout)));
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}
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}
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}
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