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New: All setting values are cached for better responsiveness.

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This commit is contained in:
kay.one 2012-02-11 16:01:52 -08:00
commit 6df184b7cb
6 changed files with 101 additions and 24 deletions
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46
NzbDrone.Core/Providers/Core/ConfigProvider.cs
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@ -1,5 +1,6 @@
using System;
using System.Collections.Generic;
using System.Linq;
using Ninject;
using NLog;
using NzbDrone.Core.Model;
@ -11,7 +12,10 @@ namespace NzbDrone.Core.Providers.Core
{
public class ConfigProvider
{
private static readonly Logger Logger = LogManager.GetCurrentClassLogger();
private static readonly Logger logger = LogManager.GetCurrentClassLogger();
private static Dictionary<string, string> cache = new Dictionary<string, string>();
private readonly IDatabase _database;
[Inject]
@ -24,7 +28,7 @@ namespace NzbDrone.Core.Providers.Core
{
}
public IList<Config> All()
public IEnumerable<Config> All()
{
return _database.Fetch<Config>();
}
@ -409,7 +413,7 @@ namespace NzbDrone.Core.Providers.Core
set { SetValue("AutoIgnorePreviouslyDownloadedEpisodes", value); }
}
public Guid UGuid
public Guid UGuid
{
get { return Guid.Parse(GetValue("UGuid", Guid.NewGuid().ToString(), persist: true)); }
}
@ -449,12 +453,15 @@ namespace NzbDrone.Core.Providers.Core
public virtual string GetValue(string key, object defaultValue, bool persist = false)
{
var dbValue = _database.SingleOrDefault<Config>("WHERE [Key] =@0", key);
EnsureCache();
if (dbValue != null && !String.IsNullOrEmpty(dbValue.Value))
return dbValue.Value;
Logger.Trace("Unable to find config key '{0}' defaultValue:'{1}'", key, defaultValue);
string dbValue;
if (cache.TryGetValue(key, out dbValue) && dbValue != null && !String.IsNullOrEmpty(dbValue))
return dbValue;
logger.Trace("Unable to find config key '{0}' defaultValue:'{1}'", key, defaultValue);
if (persist)
SetValue(key, defaultValue.ToString());
@ -479,7 +486,7 @@ namespace NzbDrone.Core.Providers.Core
if (value == null)
throw new ArgumentNullException("key");
Logger.Trace("Writing Setting to file. Key:'{0}' Value:'{1}'", key, value);
logger.Trace("Writing Setting to file. Key:'{0}' Value:'{1}'", key, value);
var dbValue = _database.SingleOrDefault<Config>("WHERE [KEY]=@0", key);
@ -490,12 +497,29 @@ namespace NzbDrone.Core.Providers.Core
else
{
dbValue.Value = value;
using (var tran = _database.GetTransaction())
_database.Update(dbValue);
}
ClearCache();
}
private void EnsureCache()
{
lock (cache)
{
if (!cache.Any())
{
_database.Update(dbValue);
tran.Complete();
cache = _database.Fetch<Config>().ToDictionary(c => c.Key, c => c.Value);
}
}
}
public static void ClearCache()
{
lock (cache)
{
cache = new Dictionary<string, string>();
}
}
}
}