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) 2023 Vaughn Nugent
*
* Library: VNLib
* Package: ObjectCacheServer
* File: CacheStore.cs
*
* CacheStore.cs is part of ObjectCacheServer which is part of the larger
* VNLib collection of libraries and utilities.
*
* ObjectCacheServer 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.
*
* ObjectCacheServer 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.Utils.Logging;
using VNLib.Plugins;
using VNLib.Plugins.Extensions.Loading;
namespace VNLib.Data.Caching.ObjectCache.Server
{
[ConfigurationName("cache")]
internal sealed class CacheStore : ICacheStore, IDisposable
{
public BlobCacheListener Listener { get; }
public CacheStore(PluginBase plugin, IConfigScope config)
{
//Init cache
Listener = InitializeCache((ObjectCacheServerEntry)plugin, config);
}
ValueTask ICacheStore.AddOrUpdateBlobAsync<T>(string objectId, string? alternateId, GetBodyDataCallback<T> bodyData, T state, CancellationToken token)
{
return Listener.Cache.AddOrUpdateObjectAsync(objectId, alternateId, bodyData, state, default, token);
}
void ICacheStore.Clear()
{
throw new NotImplementedException();
}
ValueTask<bool> ICacheStore.DeleteItemAsync(string id, CancellationToken token)
{
return Listener.Cache.DeleteObjectAsync(id, token);
}
private static BlobCacheListener InitializeCache(ObjectCacheServerEntry plugin, IConfigScope config)
{
const string CacheConfigTemplate =
@"
Cache Configuration:
Max memory: {max} Mb
Buckets: {bc}
Entries per-bucket: {mc}
";
//Deserialize the cache config
CacheConfiguration cacheConf = config.Deserialze<CacheConfiguration>();
if (cacheConf.MaxCacheEntries < 2)
{
throw new ArgumentException("You must configure a 'max_cache' size larger than 1 item");
}
//Suggestion
if (cacheConf.MaxCacheEntries < 200)
{
plugin.Log.Information("Suggestion: You may want a larger cache size, you have less than 200 items in cache");
}
//calculate the max memory usage
ulong maxByteSize = ((ulong)cacheConf.MaxCacheEntries * (ulong)cacheConf.BucketCount * (ulong)cacheConf.MaxMessageSize);
//Log the cache config
plugin.Log.Information(CacheConfigTemplate,
maxByteSize / (ulong)(1024 * 1000),
cacheConf.BucketCount,
cacheConf.MaxCacheEntries
);
//Get the event listener
ICacheListenerEventQueue queue = plugin.GetOrCreateSingleton<CacheListenerPubQueue>();
//Load the blob cache table system
IBlobCacheTable bc = plugin.LoadMemoryCacheSystem(config, plugin.CacheHeap, cacheConf);
//Endpoint only allows for a single reader
return new(bc, queue, plugin.Log, plugin.CacheHeap);
}
public void Dispose()
{
Listener.Dispose();
}
}
}
|
