/// <summary>
/// Creates the intrinsic definitions.
/// </summary>
private void InitializeBuiltinDefinitions(CheckpointingQueryEngine queryEngine)
{
#pragma warning disable IDE0079 // Remove unnecessary suppression.
#pragma warning disable CA2000 // Dispose objects before losing scope. (Entities are owned by the registry.)
// Subscribe implementation for Subscribable and ReliableObservable.
_other.TryAdd(QueryEngineConstants.SubscribeUri, new OtherDefinitionEntity(new Uri(QueryEngineConstants.SubscribeUri), (Expression <Func <ISubscribable <T>, IObserver <T>, ISubscription> >)((o, v) => o.SubscribeRoot(v)), null));
_other.TryAdd(QueryEngineConstants.ReliableSubscribeUri, new OtherDefinitionEntity(new Uri(QueryEngineConstants.ReliableSubscribeUri), (Expression <Func <IReliableObservable <T>, IReliableObserver <T>, IReliableSubscription> >)((o, v) => o.Subscribe(v)), null));
// NB: All of the *Id definitions are legacy, prior to standardizing on `rx://builtin/identity`. They've been kept to ensure existing
// expressions can continue to bind and recover. They're harmless.
// Conversions from Observable to Subscribable and from Subscribable to Subscribable (identity).
_observables.TryAdd(QueryEngineConstants.ObservableId, new ObservableDefinitionEntity(new Uri(QueryEngineConstants.ObservableId), (Expression <Func <IObservable <T>, ISubscribable <T> > >)((source) => source.ToSubscribable()), null));
_observables.TryAdd(QueryEngineConstants.SubscribableId, new ObservableDefinitionEntity(new Uri(QueryEngineConstants.SubscribableId), (Expression <Func <ISubscribable <T>, ISubscribable <T> > >)((source) => source), null));
_observables.TryAdd(QueryEngineConstants.QbservableId, new ObservableDefinitionEntity(new Uri(QueryEngineConstants.QbservableId), (Expression <Func <ISubscribable <T>, ISubscribable <T> > >)((source) => source), null)); // TODO: consider eliminating the identities from the expression
// Conversion from Observer to Observer (identity).
_observers.TryAdd(QueryEngineConstants.ObserverId, new ObserverDefinitionEntity(new Uri(QueryEngineConstants.ObserverId), (Expression <Func <IObserver <T>, IObserver <T> > >)(observer => observer), null));
// Subject factories for input and output edges.
_subjectFactories.TryAdd(QueryEngineConstants.InputUri, new StreamFactoryDefinitionEntity(new Uri(QueryEngineConstants.InputUri), (Expression <Func <EdgeDescription, IReliableMultiSubject <T, T> > >)((edge) => new InputEdge <T>(edge, queryEngine._serviceResolver, queryEngine._reliableService)), null));
_subjectFactories.TryAdd(QueryEngineConstants.OutputUri, new StreamFactoryDefinitionEntity(new Uri(QueryEngineConstants.OutputUri), (Expression <Func <EdgeDescription, IReliableMultiSubject <T, T> > >)((edge) => new OutputEdge <T>(edge, queryEngine._serviceResolver, queryEngine._reliableService)), null));
_subjectFactories.TryAdd(QueryEngineConstants.BridgeUri, new StreamFactoryDefinitionEntity(new Uri(QueryEngineConstants.BridgeUri), (Expression <Func <Expression, IReliableMultiSubject <T, T> > >)((expr) => new Bridge <T>(queryEngine.Options.ExpressionPolicy.InMemoryCache.Create(expr))), null));
_subjectFactories.TryAdd(QueryEngineConstants.InnerSubjectUri, new StreamFactoryDefinitionEntity(new Uri(QueryEngineConstants.InnerSubjectUri), (Expression <Func <IReliableMultiSubject <T, T> > >)(() => new InnerSubject <T>()), null));
_subjectFactories.TryAdd(QueryEngineConstants.InnerSubjectRefCountUri, new StreamFactoryDefinitionEntity(new Uri(QueryEngineConstants.InnerSubjectRefCountUri), (Expression <Func <Uri, Uri, IReliableMultiSubject <T, T> > >)((refCountUri, collectorUri) => new RefCountSubject <T>(refCountUri, collectorUri)), null));
// Built-in subscription factory for observable.Subscribe(observer)
_subscriptionFactories.TryAdd(QueryEngineConstants.SubscribeUri, new SubscriptionFactoryDefinitionEntity(new Uri(QueryEngineConstants.SubscribeUri), (Expression <Func <ISubscribable <T>, IObserver <T>, ISubscription> >)((o, v) => o.SubscribeRoot(v)), null));
_subscriptionFactories.TryAdd(QueryEngineConstants.ReliableSubscribeUri, new SubscriptionFactoryDefinitionEntity(new Uri(QueryEngineConstants.ReliableSubscribeUri), (Expression <Func <IReliableObservable <T>, IReliableObserver <T>, IReliableSubscription> >)((o, v) => o.Subscribe(v)), null));
#pragma warning restore CA2000
#pragma warning restore IDE0079
}
public TemplateMigrationTask(CheckpointingQueryEngine queryEngine, QueryEngineRegistryTemplatizer templatizer, Regex keyRegex, int quota, TraceSource traceSource)
{
Debug.Assert(quota > 0);
_queryEngine = queryEngine;
_templatizer = templatizer;
_quota = quota;
_remainingQuota = quota;
_traceSource = traceSource;
_enumerator = new RegistryKeyEnumerable(queryEngine._registry).Where(e => keyRegex.IsMatch(e.Uri.ToCanonicalString())).GetEnumerator();
}
public BuiltinEntitiesRegistry(CheckpointingQueryEngine queryEngine, IReactiveMetadata metadata)
{
Debug.Assert(queryEngine != null);
Debug.Assert(metadata != null);
_queryEngine = queryEngine;
_subjects = new ReactiveEntityCollection <string, SubjectEntity>(StringComparer.Ordinal);
var localObservables = new ReactiveEntityCollection <string, ObservableDefinitionEntity>(StringComparer.Ordinal);
var localObservablesAndSubjects = new ChainedLookupReactiveEntityCollection <string, ObservableDefinitionEntity, SubjectEntity>(localObservables, _subjects, s => ObservableDefinitionEntity.FromSubject(s));
_observables = new ExternalLookupReactiveEntityCollection <ObservableDefinitionEntity>(localObservablesAndSubjects, TryLookupObservable, metadata);
var localObservers = new ReactiveEntityCollection <string, ObserverDefinitionEntity>(StringComparer.Ordinal);
var localObserversAndSubjects = new ChainedLookupReactiveEntityCollection <string, ObserverDefinitionEntity, SubjectEntity>(localObservers, _subjects, s => ObserverDefinitionEntity.FromSubject(s));
_observers = new ExternalLookupReactiveEntityCollection <ObserverDefinitionEntity>(localObserversAndSubjects, TryLookupObserver, metadata);
var localSubjectFactories = new ReactiveEntityCollection <string, StreamFactoryDefinitionEntity>(StringComparer.Ordinal);
_subjectFactories = new ExternalLookupReactiveEntityCollection <StreamFactoryDefinitionEntity>(localSubjectFactories, TryLookupStreamFactory, metadata);
var localSubscriptionFactories = new ReactiveEntityCollection <string, SubscriptionFactoryDefinitionEntity>(StringComparer.Ordinal);
_subscriptionFactories = new ExternalLookupReactiveEntityCollection <SubscriptionFactoryDefinitionEntity>(localSubscriptionFactories, TryLookupSubscriptionFactory, metadata);
_other = new ReactiveEntityCollection <string, DefinitionEntity>(StringComparer.Ordinal);
_templates = new InvertedLookupReactiveEntityCollection <string, DefinitionEntity>(StringComparer.Ordinal, InvertedDefinitionEntityComparer.Default);
_subscriptions = new ReactiveEntityCollection <string, SubscriptionEntity>(StringComparer.Ordinal);
_reliableSubscriptions = new ReactiveEntityCollection <string, ReliableSubscriptionEntity>(StringComparer.Ordinal);
_metadataRewrites = new ConditionalWeakTable <Expression, Expression>();
InitializeBuiltinDefinitions(queryEngine);
}
public GarbageCollector(CheckpointingQueryEngine queryEngine, Action <ReactiveEntity> remove)
{
_queryEngine = queryEngine;
_remove = remove;
_collectibleEntities = new ConcurrentQueue <ReactiveEntity>();
}
/// <summary>
/// Invokes the specified event but ignores (but logs) any exceptions thrown by the exception handler.
/// </summary>
/// <typeparam name="TEventArgs">The type of the event arguments.</typeparam>
/// <param name="handler">The event to invoke.</param>
/// <param name="sender">The sender raising the event.</param>
/// <param name="args">The arguments passed to the event handler(s).</param>
/// <param name="method">The name of the caller, used for logging purposes in case of failure.</param>
public static void InvokeSafe <TEventArgs>(this EventHandler <TEventArgs> handler, CheckpointingQueryEngine sender, TEventArgs args, [CallerMemberName] string method = null)
{
#pragma warning disable IDE0079 // Remove unnecessary suppression.
#pragma warning disable CA1031 // Do not catch general exception types. (Goal of Safe variant.)
try
{
handler(sender, args);
}
catch (Exception ex)
{
sender.TraceSource.FailSafe_Exception(method, ex);
}
#pragma warning restore CA1031
#pragma warning restore IDE0079
}
