// ReSharper disable once ParameterHidesMember
protected System.Runtime.Caching.CacheItemPolicy ToRuntimePolicy(InMemoryPolicy policy)
{
TimeSpan slidingExpiration;
DateTimeOffset absoluteExpiration;
if (policy.SlidingExpiration != null && policy.SlidingExpiration.Value < TimeSpan.MaxValue)
{
absoluteExpiration = System.Runtime.Caching.ObjectCache.InfiniteAbsoluteExpiration;
slidingExpiration = policy.SlidingExpiration.Value;
}
else if (policy.ExpirationFromAdd != null && policy.ExpirationFromAdd.Value < TimeSpan.MaxValue)
{
absoluteExpiration = DateTimeOffset.Now.Add(policy.ExpirationFromAdd.Value);
slidingExpiration = System.Runtime.Caching.ObjectCache.NoSlidingExpiration;
}
else if (policy.AbsoluteExpiration != null && policy.AbsoluteExpiration.Value < DateTimeOffset.MaxValue)
{
absoluteExpiration = policy.AbsoluteExpiration.Value;
slidingExpiration = System.Runtime.Caching.ObjectCache.NoSlidingExpiration;
}
else
{
absoluteExpiration = System.Runtime.Caching.ObjectCache.InfiniteAbsoluteExpiration;
slidingExpiration = System.Runtime.Caching.ObjectCache.NoSlidingExpiration;
}
return(new System.Runtime.Caching.CacheItemPolicy
{
AbsoluteExpiration = absoluteExpiration,
SlidingExpiration = slidingExpiration,
});
}
protected ObjectCache(
String name, System.Runtime.Caching.ObjectCache innerCache, InMemoryPolicy policy)
{
this.name = name;
this.policy = policy;
this.innerCache = innerCache;
this.synchronizer = CacheSynchronizer.CreateCacheSynchronizer(this, this.policy.SyncProvider);
}
protected ObjectCache(
String name, System.Runtime.Caching.ObjectCache innerCache, InMemoryPolicy policy)
{
this.name = name;
this.policy = policy;
this.innerCache = innerCache;
this.locks = !this.policy.DoNotLock
? new MultiLock(
this.policy.NumberOfLocks ?? 50,
this.policy.LockTimeoutMilliseconds != null && this.policy.LockTimeoutMilliseconds > 0
? this.policy.LockTimeoutMilliseconds
: null,
this.policy.DoThrowExceptionOnTimeout ?? true)
: null;
this.notiferName = this.policy?.SyncProvider;
this.synchronizer = CacheSynchronizer.CreateCacheSynchronizer(this, this.notiferName);
}
protected ObjectCache(
String name, System.Runtime.Caching.ObjectCache innerCache, InMemoryPolicy policy)
{
this.name = name;
this.Policy = policy;
this.innerCache = innerCache;
this.Locks = !this.Policy.DoNotLock
? new MultiLock(
this.Policy.NumberOfLocks ?? 50,
this.Policy.LockTimeoutMilliseconds != null && this.Policy.LockTimeoutMilliseconds > 0
? this.Policy.LockTimeoutMilliseconds
: null,
this.Policy.DoThrowExceptionOnTimeout ?? true)
: null;
if (this.Policy.OnSyncProviderFailure != null)
{
if (string.IsNullOrEmpty(this.Policy.SyncProvider))
{
throw new ApplicationException($"{name}.OnSyncProviderFailure requires SyncProvider to be defined");
}
var cacheItemPolicy = ToRuntimePolicy(this.Policy);
var syncProviderFailureCacheItemPolicy = ToRuntimePolicy(this.Policy.OnSyncProviderFailure);
if (syncProviderFailureCacheItemPolicy.AbsoluteExpiration >= cacheItemPolicy.AbsoluteExpiration &&
syncProviderFailureCacheItemPolicy.SlidingExpiration >= cacheItemPolicy.SlidingExpiration)
{
throw new ApplicationException($"{name}.OnSyncProviderFailure expiry policy needs to be more restrictive");
}
}
this.notiferName = this.Policy.SyncProvider;
this.synchronizer = CacheSynchronizer.CreateCacheSynchronizer(this, this.notiferName,
invalidateOnStateChange: this.Policy.OnSyncProviderFailure?.InvalidateOnProviderStateChange ?? false);
}
public InMemoryScopedCache(String name, InMemoryPolicy policy)
: base(name, new System.Runtime.Caching.MemoryCache(name), policy)
{
}
