public async Task <IEnumerable <IGrain> > GetActiveGrains(Type grainType)
{
string grainTypeName = TypeCodeMapper.GetImplementation(grainType).GrainClass;
IEnumerable <Tuple <GrainId, string, int> > activeGrainList = await GetGrainActivations();
IEnumerable <IGrain> filteredList = activeGrainList.Where(s => s.Item2.Equals(grainTypeName)).Select(s => GrainFactory.GetGrain <IIndexableGrain>(s.Item1.GetPrimaryKey(), grainType));
return(filteredList.ToList());
}
public static async Task <IEnumerable <T> > GetActiveGrains <T>(IGrainFactory gf, params SiloAddress[] hostsIds) where T : IGrain
{
string grainTypeName = TypeCodeMapper.GetImplementation(typeof(T)).GrainClass;
IEnumerable <Tuple <GrainId, string, int> > activeGrainList = await GetGrainActivations(hostsIds);
IEnumerable <T> filteredList = activeGrainList.Where(s => s.Item2.Equals(grainTypeName)).Select(s => gf.GetGrain <T>(s.Item1.GetPrimaryKey(), typeof(T)));
return(filteredList.ToList());
}
/// <summary>
/// This method extends GrainFactory by adding a new GetGrain method
/// to it that can get the runtime type of the grain interface along
/// with its primary key, and return the grain casted to an interface
/// that the given grainInterfaceType extends it.
///
/// The main use-case is when you want to get a grain that its type
/// is unknown at compile time, and also SuperOutputGrainInterfaceType
/// is non-generic, while outputGrainInterfaceType is a generic type.
/// </summary>
/// <typeparam name="SuperOutputGrainInterfaceType">The output type of
/// the grain</typeparam>
/// <param name="gf">the grainFactory instance that this method
/// is extending its functionality</param>
/// <param name="grainID">the primary key of the grain</param>
/// <param name="grainInterfaceType">the runtime type of the grain
/// interface</param>
/// <param name="outputGrainInterfaceType">the type of grain interface
/// that should be returned</param>
/// <returns></returns>
public static IGrain GetGrain(this IGrainFactory gf, string grainID, Type grainInterfaceType, Type outputGrainInterfaceType)
{
Type interfaceType = grainInterfaceType;
GrainClassData implementation;
var grainTypeResolver = RuntimeClient.Current.GrainTypeResolver;
grainTypeResolver.TryGetGrainClassData(interfaceType, out implementation, "");
var grainId = TypeCodeMapper.ComposeGrainId(implementation, grainID, interfaceType);
return((IGrain)((GrainFactory)gf).Cast(((GrainFactory)gf).MakeGrainReferenceFromType(interfaceType, grainId), outputGrainInterfaceType));
}
/// <summary>
/// This method extends GrainFactory by adding a new GetGrain method
/// to it that can get the runtime type of the grain interface along
/// with its primary key, and return the grain casted to an interface
/// that the given grainInterfaceType extends it.
///
/// The main use-case is when you want to get a grain that its type
/// is unknown at compile time.
/// </summary>
/// <typeparam name="OutputGrainInterfaceType">The output type of
/// the grain</typeparam>
/// <param name="gf">the grainFactory instance that this method
/// is extending its functionality</param>
/// <param name="grainID">the primary key of the grain</param>
/// <param name="grainInterfaceType">the runtime type of the grain
/// interface</param>
/// <returns>the requested grain with the given grainID and grainInterfaceType</returns>
public static OutputGrainInterfaceType GetGrain <OutputGrainInterfaceType>(this IGrainFactory gf, Guid grainID, Type grainInterfaceType) where OutputGrainInterfaceType : IGrain
{
Type interfaceType = grainInterfaceType;
GrainClassData implementation;
var grainTypeResolver = RuntimeClient.Current.GrainTypeResolver;
grainTypeResolver.TryGetGrainClassData(interfaceType, out implementation, "");
var grainId = TypeCodeMapper.ComposeGrainId(implementation, grainID, interfaceType);
return(((GrainFactory)gf).Cast <OutputGrainInterfaceType>(((GrainFactory)gf).MakeGrainReferenceFromType(interfaceType, grainId)));
}
private void EnsureStorageProvider()
{
if (_storageProvider == null)
{
var implementation = TypeCodeMapper.GetImplementation(typeof(V));
Type implType;
if (implementation == null || (grainImplClass = implementation.GrainClass) == null || !TypeUtils.TryResolveType(grainImplClass, out implType))
{
throw new Exception("The grain implementation class " + implementation.GrainClass + " for grain interface " + TypeUtils.GetFullName(typeof(V)) + " was not resolved.");
}
_storageProvider = InsideRuntimeClient.Current.Catalog.SetupStorageProvider(implType);
}
}
private void EnsureGrainStorage()
{
if (_grainStorage == null)
{
var implementation = TypeCodeMapper.GetImplementation(this.SiloIndexManager.GrainTypeResolver, typeof(V));
if (implementation == null || (_grainClassName = implementation.GrainClass) == null ||
!this.SiloIndexManager.CachedTypeResolver.TryResolveType(_grainClassName, out Type grainClassType))
{
throw new IndexException($"The grain implementation class {implementation.GrainClass} for grain" +
" interface {IndexUtils.GetFullTypeName(typeof(V))} was not resolved.");
}
_grainStorage = grainClassType.GetGrainStorage(this.SiloIndexManager.ServiceProvider);
}
}
private void EnsureGrainStorage()
{
if (_grainStorage == null)
{
var implementation = TypeCodeMapper.GetImplementation(this.SiloIndexManager.GrainTypeResolver, typeof(V));
if (implementation == null || (grainImplClass = implementation.GrainClass) == null ||
!this.SiloIndexManager.CachedTypeResolver.TryResolveType(grainImplClass, out Type implType))
{
throw new IndexException($"The grain implementation class {implementation.GrainClass} for grain" +
" interface {IndexUtils.GetFullTypeName(typeof(V))} was not resolved.");
}
_grainStorage = implType.GetGrainStorage(this.SiloIndexManager.ServiceProvider);
bool isFaultTolerant = ApplicationPartsIndexableGrainLoader.IsSubclassOfRawGenericType(typeof(IndexableGrain <,>), implType);
_indexedFieldPrefix = isFaultTolerant ? "UserState." : string.Empty;
}
}
/// <summary>
/// This is a helper method for creating an index on a field of an actor.
/// </summary>
/// <param name="gf">The current instance of IGrainFactory</param>
/// <param name="idxType">The type of index to be created</param>
/// <param name="indexName">The index name to be created</param>
/// <param name="isUniqueIndex">Determines whether this is a unique index that needs to be created</param>
/// <param name="isEager">Determines whether updates to this index should be applied eagerly or not</param>
/// <param name="maxEntriesPerBucket">Determines the maximum number of entries in
/// each bucket of a distributed index, if this index type is a distributed one.</param>
/// <param name="indexedProperty">the PropertyInfo object for the indexed field.
/// This object helps in creating a default instance of IndexUpdateGenerator.</param>
/// <returns>A triple that consists of:
/// 1) the index object (that implements IndexInterface
/// 2) the IndexMetaData object for this index, and
/// 3) the IndexUpdateGenerator instance for this index.
/// This triple is untyped, because IndexInterface, IndexMetaData
/// and IndexUpdateGenerator types are not visible in the core project.</returns>
internal static Tuple <object, object, object> CreateIndex(this IGrainFactory gf, Type idxType, string indexName, bool isUniqueIndex, bool isEager, int maxEntriesPerBucket, PropertyInfo indexedProperty)
{
Type iIndexType = idxType.GetGenericType(typeof(IndexInterface <,>));
if (iIndexType != null)
{
Type[] indexTypeArgs = iIndexType.GetGenericArguments();
Type keyType = indexTypeArgs[0];
Type grainType = indexTypeArgs[1];
IndexInterface index;
if (typeof(IGrain).IsAssignableFrom(idxType))
{
index = (IndexInterface)gf.GetGrain(IndexUtils.GetIndexGrainID(grainType, indexName), idxType, idxType);
Type idxImplType = TypeUtils.ResolveType(TypeCodeMapper.GetImplementation(idxType).GrainClass);
if (idxImplType.IsGenericTypeDefinition)
{
idxImplType = idxImplType.MakeGenericType(iIndexType.GetGenericArguments());
}
MethodInfo initPerSilo;
if ((initPerSilo = idxImplType.GetMethod("InitPerSilo", BindingFlags.Static | BindingFlags.Public)) != null)
{
var initPerSiloMethod = (Action <Silo, string, bool>)Delegate.CreateDelegate(
typeof(Action <Silo, string, bool>),
initPerSilo);
initPerSiloMethod(Silo.CurrentSilo, indexName, isUniqueIndex);
}
}
else if (idxType.IsClass)
{
index = (IndexInterface)Activator.CreateInstance(idxType, indexName, isUniqueIndex);
}
else
{
throw new Exception(string.Format("{0} is neither a grain nor a class. Index \"{1}\" cannot be created.", idxType, indexName));
}
return(Tuple.Create((object)index, (object)new IndexMetaData(idxType, isUniqueIndex, isEager, maxEntriesPerBucket), (object)CreateIndexUpdateGenFromProperty(indexedProperty)));
}
else
{
throw new NotSupportedException(string.Format("Adding an index that does not implement IndexInterface<K,V> is not supported yet. Your requested index ({0}) is invalid.", idxType.ToString()));
}
}
/// <summary>
/// This is a helper method for creating an index on a field of an actor.
/// </summary>
/// <param name="idxType">The type of index to be created</param>
/// <param name="indexName">The index name to be created</param>
/// <param name="isUniqueIndex">Determines whether this is a unique index that needs to be created</param>
/// <param name="isEager">Determines whether updates to this index should be applied eagerly or not</param>
/// <param name="maxEntriesPerBucket">Determines the maximum number of entries in
/// each bucket of a distributed index, if this index type is a distributed one.</param>
/// <param name="indexedProperty">the PropertyInfo object for the indexed field.
/// This object helps in creating a default instance of IndexUpdateGenerator.</param>
/// <returns>An <see cref="IndexInfo"/> for the specified idxType and indexName.</returns>
internal async Task <IndexInfo> CreateIndex(Type idxType, string indexName, bool isUniqueIndex, bool isEager, int maxEntriesPerBucket, PropertyInfo indexedProperty)
{
Type iIndexType = idxType.GetGenericType(typeof(IIndexInterface <,>));
if (iIndexType == null)
{
throw new NotSupportedException(string.Format("Adding an index that does not implement IndexInterface<K,V> is not supported yet. Your requested index ({0}) is invalid.", idxType.ToString()));
}
Type[] indexTypeArgs = iIndexType.GetGenericArguments();
Type keyType = indexTypeArgs[0];
Type grainType = indexTypeArgs[1];
IIndexInterface index;
if (typeof(IGrain).IsAssignableFrom(idxType))
{
// This must call the static Silo methods because we may not be InSilo.
index = (IIndexInterface)Silo.GetGrain(this.grainFactory, IndexUtils.GetIndexGrainPrimaryKey(grainType, indexName), idxType, idxType);
if (this.IsInSilo)
{
var idxImplType = this.indexManager.CachedTypeResolver.ResolveType(
TypeCodeMapper.GetImplementation(this.siloIndexManager.GrainTypeResolver, idxType).GrainClass);
if (idxImplType.IsGenericTypeDefinition)
{
idxImplType = idxImplType.MakeGenericType(iIndexType.GetGenericArguments());
}
var initPerSiloMethodInfo = idxImplType.GetMethod("InitPerSilo", BindingFlags.Static | BindingFlags.NonPublic);
if (initPerSiloMethodInfo != null) // Static method so cannot use an interface
{
var initPerSiloMethod = (Func <SiloIndexManager, string, bool, Task>)Delegate.CreateDelegate(typeof(Func <SiloIndexManager, string, bool, Task>), initPerSiloMethodInfo);
await initPerSiloMethod(this.siloIndexManager, indexName, isUniqueIndex);
}
}
}
else
{
index = idxType.IsClass
? (IIndexInterface)Activator.CreateInstance(idxType, this.indexManager.ServiceProvider, indexName, isUniqueIndex)
: throw new IndexException(string.Format("{0} is neither a grain nor a class. Index \"{1}\" cannot be created.", idxType, indexName));
}
return(new IndexInfo(index, new IndexMetaData(idxType, isUniqueIndex, isEager, maxEntriesPerBucket), CreateIndexUpdateGenFromProperty(indexedProperty)));
}
/// <summary>
/// Determines whether the index grain is a stateless worker
/// or not. This piece of information can impact the relationship
/// between index handlers and the index.
/// </summary>
/// <returns>the result of whether the current index is
/// a stateless worker or not</returns>
public bool IsIndexStatelessWorker()
{
return(IsStatelessWorker(Type.GetType(TypeCodeMapper.GetImplementation(_indexType).GrainClass)));
}
