42 lines
1.2 KiB
C#
42 lines
1.2 KiB
C#
namespace NethereumWorkflow.BlockUtils
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{
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public class BlockCache
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{
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public delegate void CacheClearedEvent();
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private const int MaxEntries = 1024 * 1024 * 5;
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private readonly Dictionary<ulong, BlockTimeEntry> entries = new Dictionary<ulong, BlockTimeEntry>();
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public event CacheClearedEvent? OnCacheCleared;
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public BlockTimeEntry Add(ulong number, DateTime dateTime)
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{
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return Add(new BlockTimeEntry(number, dateTime));
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}
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public BlockTimeEntry Add(BlockTimeEntry entry)
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{
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if (!entries.ContainsKey(entry.BlockNumber))
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{
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if (entries.Count > MaxEntries)
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{
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entries.Clear();
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var e = OnCacheCleared;
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if (e != null) e();
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}
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entries.Add(entry.BlockNumber, entry);
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}
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return entries[entry.BlockNumber];
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}
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public BlockTimeEntry? Get(ulong number)
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{
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if (!entries.TryGetValue(number, out BlockTimeEntry? value)) return null;
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return value;
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}
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public int Size { get { return entries.Count; } }
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}
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}
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