public CachedGrainLocator(
GrainDirectoryResolver grainDirectoryResolver,
IClusterMembershipService clusterMembershipService)
{
this.grainDirectoryResolver = grainDirectoryResolver;
this.clusterMembershipService = clusterMembershipService;
this.cache = new LRUBasedGrainDirectoryCache(GrainDirectoryOptions.DEFAULT_CACHE_SIZE, GrainDirectoryOptions.DEFAULT_MAXIMUM_CACHE_TTL);
}
private long lastNumHits; // for stats
internal AdaptiveDirectoryCacheMaintainer(ILocalGrainDirectory router, IGrainDirectoryCache <TValue> cache)
{
this.router = (LocalGrainDirectory)router;
this.cache = (AdaptiveGrainDirectoryCache <TValue>)cache;
lastNumAccesses = 0;
lastNumHits = 0;
OnFault = FaultBehavior.RestartOnFault;
}
public GrainLocator(
IGrainDirectory grainDirectory,
DhtGrainLocator inClusterGrainLocator,
IClusterMembershipService clusterMembershipService)
{
this.grainDirectory = grainDirectory;
this.inClusterGrainLocator = inClusterGrainLocator;
this.clusterMembershipService = clusterMembershipService;
this.cache = new LRUBasedGrainDirectoryCache(GrainDirectoryOptions.DEFAULT_CACHE_SIZE, GrainDirectoryOptions.DEFAULT_MAXIMUM_CACHE_TTL);
}
internal static AsynchAgent CreateGrainDirectoryCacheMaintainer(
LocalGrainDirectory router,
IGrainDirectoryCache <TValue> cache,
Func <List <ActivationAddress>, TValue> updateFunc)
{
var adaptiveCache = cache as AdaptiveGrainDirectoryCache <TValue>;
return(adaptiveCache != null
? new AdaptiveDirectoryCacheMaintainer <TValue>(router, adaptiveCache, updateFunc)
: null);
}
internal static AdaptiveDirectoryCacheMaintainer CreateGrainDirectoryCacheMaintainer(
LocalGrainDirectory router,
IGrainDirectoryCache cache,
IInternalGrainFactory grainFactory,
ILoggerFactory loggerFactory)
{
var adaptiveCache = cache as AdaptiveGrainDirectoryCache;
return(adaptiveCache != null
? new AdaptiveDirectoryCacheMaintainer(router, adaptiveCache, grainFactory, loggerFactory)
: null);
}
internal static DedicatedAsynchAgent CreateGrainDirectoryCacheMaintainer(
LocalGrainDirectory router,
IGrainDirectoryCache cache,
IInternalGrainFactory grainFactory,
ExecutorService executorService,
ILoggerFactory loggerFactory)
{
var adaptiveCache = cache as AdaptiveGrainDirectoryCache;
return(adaptiveCache != null
? new AdaptiveDirectoryCacheMaintainer(router, adaptiveCache, grainFactory, executorService, loggerFactory)
: null);
}
internal static DedicatedAsynchAgent CreateGrainDirectoryCacheMaintainer(
LocalGrainDirectory router,
IGrainDirectoryCache <TValue> cache,
Func <List <ActivationAddress>, TValue> updateFunc,
IInternalGrainFactory grainFactory,
ExecutorService executorService,
ILoggerFactory loggerFactory)
{
var adaptiveCache = cache as AdaptiveGrainDirectoryCache <TValue>;
return(adaptiveCache != null
? new AdaptiveDirectoryCacheMaintainer <TValue>(router, adaptiveCache, updateFunc, grainFactory, executorService, loggerFactory)
: null);
}
private static void RemoveActivations(IGrainDirectoryCache <IReadOnlyList <Tuple <SiloAddress, ActivationId> > > directoryCache, GrainId key, IReadOnlyList <Tuple <SiloAddress, ActivationId> > activations, int version, Func <Tuple <SiloAddress, ActivationId>, bool> doRemove)
{
int removeCount = activations.Count(doRemove);
if (removeCount == 0)
{
return; // nothing to remove, done here
}
if (activations.Count > removeCount) // still some left, update activation list. Note: Most of the time there should be only one activation
{
var newList = new List <Tuple <SiloAddress, ActivationId> >(activations.Count - removeCount);
newList.AddRange(activations.Where(t => !doRemove(t)));
directoryCache.AddOrUpdate(key, newList, version);
}
else // no activations left, remove from cache
{
directoryCache.Remove(key);
}
}
internal static DedicatedAsynchAgent CreateGrainDirectoryCacheMaintainer(
ILocalSiloDetails localSiloDetails,
LocalGrainDirectory localGrainDirectory,
IGrainDirectoryCache <TValue> cache,
Func <List <ActivationAddress>, TValue> updateFunc,
IInternalGrainFactory grainFactory,
ExecutorService executorService,
ILoggerFactory loggerFactory)
{
var adaptiveCache = cache as AdaptiveGrainDirectoryCache <TValue>;
if (adaptiveCache is null)
{
return(null);
}
return(new AdaptiveDirectoryCacheMaintainer <TValue>(
localSiloDetails,
localGrainDirectory,
adaptiveCache,
updateFunc,
grainFactory,
executorService,
loggerFactory));
}
/// <summary>
/// Looks up the cached value by the given key.
/// </summary>
/// <param name="cache">grain directory cache to look up results from</param>
/// <param name="key">key for the lookup</param>
/// <param name="result">value if the key is found, undefined otherwise</param>
/// <returns>true iff the the given key is in the cache</returns>
public static bool LookUp <TValue>(this IGrainDirectoryCache <TValue> cache, GrainId key, out TValue result)
{
int version;
return(cache.LookUp(key, out result, out version));
}
/// <summary>
/// Looks up the cached value by the given key.
/// </summary>
/// <param name="cache">grain directory cache to look up results from</param>
/// <param name="key">key for the lookup</param>
/// <param name="result">value if the key is found, undefined otherwise</param>
/// <returns>true if the given key is in the cache</returns>
public static bool LookUp(this IGrainDirectoryCache cache, GrainId key, out GrainAddress result)
{
return(cache.LookUp(key, out result, out _));
}
internal static AsynchAgent CreateGrainDirectoryCacheMaintainer(LocalGrainDirectory router, IGrainDirectoryCache <TValue> cache)
{
return(cache is AdaptiveGrainDirectoryCache <TValue>?
new AdaptiveDirectoryCacheMaintainer <TValue>(router, cache) : null);
}
/// <summary>
/// Looks up the cached value by the given key.
/// </summary>
/// <param name="cache">grain directory cache to look up results from</param>
/// <param name="key">key for the lookup</param>
/// <param name="result">value if the key is found, undefined otherwise</param>
/// <returns>true if the given key is in the cache</returns>
public static bool LookUp(this IGrainDirectoryCache cache, GrainId key, out IReadOnlyList <Tuple <SiloAddress, ActivationId> > result)
{
int version;
return(cache.LookUp(key, out result, out version));
}
private static void RemoveActivations(IGrainDirectoryCache<IReadOnlyList<Tuple<SiloAddress, ActivationId>>> directoryCache, GrainId key, IReadOnlyList<Tuple<SiloAddress, ActivationId>> activations, int version, Func<Tuple<SiloAddress, ActivationId>, bool> doRemove)
{
int removeCount = activations.Count(doRemove);
if (removeCount == 0)
{
return; // nothing to remove, done here
}
if (activations.Count > removeCount) // still some left, update activation list. Note: Most of the time there should be only one activation
{
var newList = new List<Tuple<SiloAddress, ActivationId>>(activations.Count - removeCount);
newList.AddRange(activations.Where(t => !doRemove(t)));
directoryCache.AddOrUpdate(key, newList, version);
}
else // no activations left, remove from cache
{
directoryCache.Remove(key);
}
}
public GrainLocator(IGrainDirectory grainDirectory, InClusterGrainLocator inClusterGrainLocator)
{
this.grainDirectory = grainDirectory;
this.inClusterGrainLocator = inClusterGrainLocator;
this.cache = new LRUBasedGrainDirectoryCache(GrainDirectoryOptions.DEFAULT_CACHE_SIZE, GrainDirectoryOptions.DEFAULT_MAXIMUM_CACHE_TTL);
}
