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Added In-Memory Subscription Support (#2083)
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23 changes: 0 additions & 23 deletions
23
src/HotChocolate/Core/benchmark/StarWars/OnReviewMessage.cs
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16 changes: 16 additions & 0 deletions
16
src/HotChocolate/Core/src/Abstractions/Execution/IQueryResult.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
|
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| #nullable enable | ||
|
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| namespace HotChocolate.Execution | ||
| { | ||
| public interface IQueryResult | ||
| : IExecutionResult | ||
| , IDisposable | ||
| { | ||
| IReadOnlyDictionary<string, object?>? Data { get; } | ||
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| IReadOnlyDictionary<string, object?> ToDictionary(); | ||
| } | ||
| } |
12 changes: 3 additions & 9 deletions
12
src/HotChocolate/Core/src/Abstractions/Execution/IReadOnlyQueryResult.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,16 +1,10 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
|
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| #nullable enable | ||
| #nullable enable | ||
|
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| namespace HotChocolate.Execution | ||
| { | ||
| // todo : deprecate this interface and use IQueryResult | ||
| public interface IReadOnlyQueryResult | ||
| : IExecutionResult | ||
| , IDisposable | ||
| : IQueryResult | ||
| { | ||
| IReadOnlyDictionary<string, object?>? Data { get; } | ||
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| IReadOnlyDictionary<string, object?> ToDictionary(); | ||
| } | ||
| } |
16 changes: 14 additions & 2 deletions
16
src/HotChocolate/Core/src/Abstractions/Execution/IResponseStream.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,8 +1,20 @@ | ||
| using System.Collections.Generic; | ||
| using System; | ||
| using System.Collections.Generic; | ||
|
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| #nullable enable | ||
|
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| namespace HotChocolate.Execution | ||
| { | ||
| public interface IResponseStream : IAsyncEnumerable<IReadOnlyQueryResult> | ||
| /// <summary> | ||
| /// The response stream represents a stream of <see cref="IQueryResult" /> that are produced | ||
| /// by the execution engine. | ||
| /// </summary> | ||
| public interface IResponseStream | ||
| : IAsyncDisposable | ||
| { | ||
| /// <summary> | ||
| /// Reads the subscription results from the execution engine. | ||
| /// </summary> | ||
| IAsyncEnumerable<IQueryResult> ReadResultsAsync(); | ||
| } | ||
| } |
20 changes: 20 additions & 0 deletions
20
src/HotChocolate/Core/src/Abstractions/Execution/ISourceStream.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Threading; | ||
|
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| #nullable enable | ||
|
|
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| namespace HotChocolate.Execution | ||
| { | ||
| /// <summary> | ||
| /// The source stream represents a stream of events from a pub/sub system. | ||
| /// </summary> | ||
| public interface ISourceStream | ||
| : IAsyncDisposable | ||
| { | ||
| /// <summary> | ||
| /// Reads the subscription result from the pub/sub system. | ||
| /// </summary> | ||
| IAsyncEnumerable<object> ReadEventsAsync(); | ||
| } | ||
| } |
19 changes: 19 additions & 0 deletions
19
src/HotChocolate/Core/src/Abstractions/Execution/ISourceStream~1.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| using System.Collections.Generic; | ||
| using System.Threading; | ||
|
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| #nullable enable | ||
|
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| namespace HotChocolate.Execution | ||
| { | ||
| /// <summary> | ||
| /// The source stream represents a stream of events from a pub/sub system. | ||
| /// </summary> | ||
| public interface ISourceStream<TMessage> | ||
| : ISourceStream | ||
| { | ||
| /// <summary> | ||
| /// Reads the subscription result from the pub/sub system. | ||
| /// </summary> | ||
| new IAsyncEnumerable<TMessage> ReadEventsAsync(); | ||
| } | ||
| } |
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83 changes: 83 additions & 0 deletions
83
src/HotChocolate/Core/src/Abstractions/Execution/SubscriptionResult.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Threading.Tasks; | ||
|
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| #nullable enable | ||
|
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| namespace HotChocolate.Execution | ||
| { | ||
| public sealed class SubscriptionResult | ||
| : ISubscriptionResult | ||
| { | ||
| private readonly Func<IAsyncEnumerable<IQueryResult>>? _resultStreamFactory; | ||
| private readonly IReadOnlyList<IError>? _errors; | ||
| private readonly IReadOnlyDictionary<string, object?>? _extensions; | ||
| private readonly IReadOnlyDictionary<string, object?>? _contextData; | ||
| private readonly IAsyncDisposable? _subscription; | ||
| private bool _isRead = false; | ||
| private bool _disposed = false; | ||
|
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| public SubscriptionResult( | ||
| Func<IAsyncEnumerable<IQueryResult>>? resultStreamFactory, | ||
| IReadOnlyList<IError>? errors, | ||
| IReadOnlyDictionary<string, object?>? extensions = null, | ||
| IReadOnlyDictionary<string, object?>? contextData = null, | ||
| IAsyncDisposable? subscription = null) | ||
| { | ||
| if (resultStreamFactory is null && errors is null) | ||
| { | ||
| throw new ArgumentException("Either provide a result stream factory or errors."); | ||
| } | ||
|
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| _resultStreamFactory = resultStreamFactory; | ||
| _errors = errors; | ||
| _extensions = extensions; | ||
| _contextData = contextData; | ||
| _subscription = subscription; | ||
| } | ||
|
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| public IReadOnlyList<IError>? Errors => _errors; | ||
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| public IReadOnlyDictionary<string, object?>? Extensions => _extensions; | ||
|
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| public IReadOnlyDictionary<string, object?>? ContextData => _contextData; | ||
|
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| public IAsyncEnumerable<IQueryResult> ReadResultsAsync() | ||
| { | ||
| if (_resultStreamFactory is null) | ||
| { | ||
| // todo : throw helper | ||
| throw new InvalidOperationException( | ||
| "This result has errors and cannot read from the response stream."); | ||
| } | ||
|
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| if (_isRead) | ||
| { | ||
| // todo : throw helper | ||
| throw new InvalidOperationException( | ||
| "You can only read a response stream once."); | ||
| } | ||
|
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| if (_disposed) | ||
| { | ||
| throw new ObjectDisposedException(nameof(SubscriptionResult)); | ||
| } | ||
|
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| _isRead = true; | ||
| return _resultStreamFactory(); | ||
| } | ||
|
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| public async ValueTask DisposeAsync() | ||
| { | ||
| if (!_disposed) | ||
| { | ||
| if (_subscription is { }) | ||
| { | ||
| await _subscription.DisposeAsync().ConfigureAwait(false); | ||
| } | ||
| _disposed = true; | ||
| } | ||
| } | ||
|
|
||
| } | ||
| } |
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