1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
// Copyright (C) 2024 Vaughn Nugent
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
using System;
using System.Threading;
using System.Threading.Tasks;
using VNLib.Net.Http;
using VNLib.Data.Caching;
using VNLib.Plugins;
using VNLib.Plugins.Extensions.Loading;
using VNLib.Plugins.Extensions.VNCache;
using VNLib.Plugins.Extensions.VNCache.DataModel;
namespace SimpleBookmark.Cache
{
[ConfigurationName("search_cache", Required = false)]
internal sealed class SearchResultCache
{
private readonly IEntityCache<ResultCacheEntry>? _cache;
/// <summary>
/// Gets a value that indicates if the configuration enabled result caching
/// </summary>
public bool IsEnabled => _cache != null;
public SearchResultCache(PluginBase plugin) : this(plugin, null)
{ }
public SearchResultCache(PluginBase plugin, IConfigScope? config)
{
string? cachePrefix = config?.GetRequiredProperty("cachePrefix", p => p.GetString()!);
bool isEnabled = config?.GetRequiredProperty("enabled", p => p.GetBoolean()) ?? true;
if (!isEnabled)
{
return;
}
IGlobalCacheProvider? cache = plugin.GetDefaultGlobalCache();
if (cache != null)
{
if (cachePrefix != null)
{
_cache = cache.GetPrefixedCache(cachePrefix)
.CreateEntityCache<ResultCacheEntry>(
new MemPackCacheSerializer(null),
new MemPackCacheSerializer(null)
);
}
else
{
//non-prefixed cache
_cache = cache.CreateEntityCache<ResultCacheEntry>(
new MemPackCacheSerializer(null),
new MemPackCacheSerializer(null)
);
}
}
}
public async Task<IMemoryResponseReader?> GetCachedResultAsync(string[] keys, CancellationToken cancellation)
{
ResultCacheEntry? entry = await _cache!.GetAsync($"{keys}", cancellation);
return entry is null ? null : new ResultResponseReader(entry);
}
public Task StoreResultAsync(Memory<byte> data, string[] keys, CancellationToken cancellation)
{
//Init new entry
ResultCacheEntry entry = new()
{
Payload = data,
Created = DateTime.UtcNow
};
return _cache!.UpsertAsync($"{keys}", entry, cancellation);
}
public Task DeleteEntry(string[] keys, CancellationToken cancellation) => _cache!.RemoveAsync($"{keys}", cancellation);
private sealed class ResultResponseReader(ResultCacheEntry entry) : IMemoryResponseReader
{
private int _position;
///<inheritdoc/>
public int Remaining => entry.Payload.Length - _position;
///<inheritdoc/>
public void Advance(int written) => _position += written;
///<inheritdoc/>
public void Close() => entry.Dispose();
///<inheritdoc/>
public ReadOnlyMemory<byte> GetMemory() => entry.Payload.Slice(_position);
}
}
}
|
