55 lines
1.7 KiB
C#
55 lines
1.7 KiB
C#
using JSMR.Application.Common.Caching;
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using JSMR.Infrastructure.Data;
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using Microsoft.EntityFrameworkCore;
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namespace JSMR.Infrastructure.Caching;
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public interface ICacheObject<T>
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{
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Task<T> GetAsync(CancellationToken cancellationToken = default);
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Task<T> RefreshAsync(CancellationToken cancellationToken = default);
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}
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public abstract class CacheObject<T>(ICache cache) : ICacheObject<T>
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{
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protected abstract string Key { get; }
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protected abstract Task<T> FetchAsync(CancellationToken cancellationToken = default);
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protected virtual CacheEntryOptions Options => new() { SlidingExpiration = TimeSpan.FromHours(1) };
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public async virtual Task<T> GetAsync(CancellationToken cancellationToken = default)
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{
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return await cache.GetAsync<T>(Key, cancellationToken) ?? await RefreshAsync(cancellationToken);
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}
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public async virtual Task<T> RefreshAsync(CancellationToken cancellationToken = default)
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{
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T cacheObject = await FetchAsync(cancellationToken);
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await cache.SetAsync(Key, cacheObject, Options, cancellationToken);
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return cacheObject;
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}
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}
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public interface ISpamCircleCache : ICacheObject<string[]>
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{
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}
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public class SpamCircleCache(IDbContextFactory<AppDbContext> contextFactory, ICache cache) : CacheObject<string[]>(cache), ISpamCircleCache
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{
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protected override string Key => "SpamCircles";
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protected override async Task<string[]> FetchAsync(CancellationToken cancellationToken = default)
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{
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using var context = contextFactory.CreateDbContext();
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return await context.Circles
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.AsNoTracking()
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.Where(circle => circle.Spam)
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.Select(circle => circle.MakerId)
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.Distinct()
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.ToArrayAsync(cancellationToken);
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}
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} |