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Add some asset cache plumbing. Change the generic cache from UUID to string

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keys to allow caching the new crop of URI identified objects.
This commit is contained in:
Melanie Thielker
2009-05-10 12:27:05 +00:00
parent 14a6880352
commit d8e1842d25
8 changed files with 106 additions and 46 deletions
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46
OpenSim/Framework/Cache.cs
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@@ -33,8 +33,8 @@ namespace OpenSim.Framework
{
// The delegate we will use for performing fetch from backing store
//
public delegate Object FetchDelegate(UUID index);
public delegate bool ExpireDelegate(UUID index);
public delegate Object FetchDelegate(string index);
public delegate bool ExpireDelegate(string index);
// Strategy
//
@@ -64,14 +64,14 @@ namespace OpenSim.Framework
}
// The base class of all cache objects. Implements comparison and sorting
// by the UUID member.
// by the string member.
//
// This is not abstract because we need to instantiate it briefly as a
// method parameter
//
public class CacheItemBase : IEquatable<CacheItemBase>, IComparable<CacheItemBase>
{
public UUID uuid;
public string uuid;
public DateTime entered;
public DateTime lastUsed;
public DateTime expires = new DateTime(0);
@@ -86,14 +86,14 @@ namespace OpenSim.Framework
{
}
public CacheItemBase(UUID index)
public CacheItemBase(string index)
{
uuid = index;
entered = DateTime.Now;
lastUsed = entered;
}
public CacheItemBase(UUID index, DateTime ttl)
public CacheItemBase(string index, DateTime ttl)
{
uuid = index;
entered = DateTime.Now;
@@ -123,23 +123,23 @@ namespace OpenSim.Framework
{
private Object m_Data;
public MemoryCacheItem(UUID index) :
public MemoryCacheItem(string index) :
base(index)
{
}
public MemoryCacheItem(UUID index, DateTime ttl) :
public MemoryCacheItem(string index, DateTime ttl) :
base(index, ttl)
{
}
public MemoryCacheItem(UUID index, Object data) :
public MemoryCacheItem(string index, Object data) :
base(index)
{
Store(data);
}
public MemoryCacheItem(UUID index, DateTime ttl, Object data) :
public MemoryCacheItem(string index, DateTime ttl, Object data) :
base(index, ttl)
{
Store(data);
@@ -160,23 +160,23 @@ namespace OpenSim.Framework
//
public class FileCacheItem : CacheItemBase
{
public FileCacheItem(UUID index) :
public FileCacheItem(string index) :
base(index)
{
}
public FileCacheItem(UUID index, DateTime ttl) :
public FileCacheItem(string index, DateTime ttl) :
base(index, ttl)
{
}
public FileCacheItem(UUID index, Object data) :
public FileCacheItem(string index, Object data) :
base(index)
{
Store(data);
}
public FileCacheItem(UUID index, DateTime ttl, Object data) :
public FileCacheItem(string index, DateTime ttl, Object data) :
base(index, ttl)
{
Store(data);
@@ -200,8 +200,8 @@ namespace OpenSim.Framework
public class Cache
{
private List<CacheItemBase> m_Index = new List<CacheItemBase>();
private Dictionary<UUID, CacheItemBase> m_Lookup =
new Dictionary<UUID, CacheItemBase>();
private Dictionary<string, CacheItemBase> m_Lookup =
new Dictionary<string, CacheItemBase>();
private CacheStrategy m_Strategy;
private CacheMedium m_Medium;
@@ -312,7 +312,7 @@ namespace OpenSim.Framework
// Get an item from cache. Return the raw item, not it's data
//
protected virtual CacheItemBase GetItem(UUID index)
protected virtual CacheItemBase GetItem(string index)
{
CacheItemBase item = null;
@@ -339,7 +339,7 @@ namespace OpenSim.Framework
// Get an item from cache. Do not try to fetch from source if not
// present. Just return null
//
public virtual Object Get(UUID index)
public virtual Object Get(string index)
{
CacheItemBase item = GetItem(index);
@@ -352,7 +352,7 @@ namespace OpenSim.Framework
// Fetch an object from backing store if not cached, serve from
// cache if it is.
//
public virtual Object Get(UUID index, FetchDelegate fetch)
public virtual Object Get(string index, FetchDelegate fetch)
{
Object item = Get(index);
if (item != null)
@@ -393,7 +393,7 @@ namespace OpenSim.Framework
return item.Retrieve();
}
public virtual void Store(UUID index, Object data)
public virtual void Store(string index, Object data)
{
Type container;
@@ -411,12 +411,12 @@ namespace OpenSim.Framework
Store(index, data, container);
}
public virtual void Store(UUID index, Object data, Type container)
public virtual void Store(string index, Object data, Type container)
{
Store(index, data, container, new Object[] { index });
}
public virtual void Store(UUID index, Object data, Type container,
public virtual void Store(string index, Object data, Type container,
Object[] parameters)
{
Expire(false);
@@ -520,7 +520,7 @@ namespace OpenSim.Framework
}
}
public void Invalidate(UUID uuid)
public void Invalidate(string uuid)
{
if (!m_Lookup.ContainsKey(uuid))
return;