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shuffle cdn shard configs to allow for multiple file shards to handle one file, randomly distributing

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rootdarkarchon 2023-01-01 17:32:22 +01:00
parent 9a9beb9a65
commit f8c9d1e64f
2 changed files with 19 additions and 0 deletions
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1
MareSynchronosServer/MareSynchronosServer/Hubs/MareHub.Files.cs
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@ -59,6 +59,7 @@ public partial class MareHub
{
var forbiddenFile = forbiddenFiles.SingleOrDefault(f => string.Equals(f.Hash, file.Hash, StringComparison.OrdinalIgnoreCase));
shardConfig.Shuffle();
var matchedShardConfig = shardConfig.Find(f => f.FileMatchRegex.Match(file.Hash).Success);
var baseUrl = matchedShardConfig?.CdnFullUrl ?? _mainCdnFullUrl;

18
MareSynchronosServer/MareSynchronosShared/Utils/StringUtils.cs
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@ -29,3 +29,21 @@ public static class StringUtils
return BitConverter.ToString(sha256.ComputeHash(Encoding.UTF8.GetBytes(input))).Replace("-", "", StringComparison.OrdinalIgnoreCase);
}
}
public static class ListUtils
{
private static Random rng = new();
public static void Shuffle<T>(this IList<T> list)
{
int n = list.Count;
while (n > 1)
{
n--;
int k = rng.Next(n + 1);
T value = list[k];
list[k] = list[n];
list[n] = value;
}
}
}