77 lines
2.2 KiB
C#
77 lines
2.2 KiB
C#
using System;
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using MongoDB.Bson;
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namespace StellaOps.Feedser.Source.Distro.Debian.Internal;
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internal sealed record DebianFetchCacheEntry(string? ETag, DateTimeOffset? LastModified)
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{
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public static DebianFetchCacheEntry Empty { get; } = new(null, null);
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public static DebianFetchCacheEntry FromDocument(StellaOps.Feedser.Storage.Mongo.Documents.DocumentRecord document)
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=> new(document.Etag, document.LastModified);
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public static DebianFetchCacheEntry FromBson(BsonDocument document)
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{
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if (document is null || document.ElementCount == 0)
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{
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return Empty;
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}
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string? etag = null;
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DateTimeOffset? lastModified = null;
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if (document.TryGetValue("etag", out var etagValue) && etagValue.BsonType == BsonType.String)
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{
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etag = etagValue.AsString;
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}
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if (document.TryGetValue("lastModified", out var modifiedValue))
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{
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lastModified = modifiedValue.BsonType switch
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{
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BsonType.String when DateTimeOffset.TryParse(modifiedValue.AsString, out var parsed) => parsed.ToUniversalTime(),
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BsonType.DateTime => DateTime.SpecifyKind(modifiedValue.ToUniversalTime(), DateTimeKind.Utc),
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_ => null,
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};
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}
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return new DebianFetchCacheEntry(etag, lastModified);
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}
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public BsonDocument ToBsonDocument()
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{
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var document = new BsonDocument();
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if (!string.IsNullOrWhiteSpace(ETag))
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{
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document["etag"] = ETag;
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}
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if (LastModified.HasValue)
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{
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document["lastModified"] = LastModified.Value.UtcDateTime;
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}
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return document;
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}
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public bool Matches(StellaOps.Feedser.Storage.Mongo.Documents.DocumentRecord document)
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{
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if (document is null)
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{
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return false;
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}
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if (!string.Equals(document.Etag, ETag, StringComparison.Ordinal))
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{
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return false;
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}
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if (LastModified.HasValue && document.LastModified.HasValue)
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{
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return LastModified.Value.UtcDateTime == document.LastModified.Value.UtcDateTime;
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}
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return !LastModified.HasValue && !document.LastModified.HasValue;
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}
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}
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