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QueryApi.cs
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QueryApi.cs
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//-----------------------------------------------------------------------
// <copyright file="QueryApi.cs" company="Akka.NET Project">
// Copyright (C) 2009-2022 Lightbend Inc. <http://www.lightbend.com>
// Copyright (C) 2013-2022 .NET Foundation <https://github.com/akkadotnet/akka.net>
// </copyright>
//-----------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using Akka.Actor;
using Akka.Event;
using Akka.Persistence.Journal;
namespace Akka.Persistence.Sql.Common.Journal
{
[Obsolete("Query is not implemented.")]
public interface ISubscriptionCommand { }
/// <summary>
/// Subscribe the `sender` to changes (appended events) for a specific `persistenceId`.
/// Used by query-side. The journal will send <see cref="EventAppended"/> messages to
/// the subscriber when <see cref="AsyncWriteJournal.WriteMessagesAsync"/> has been called.
/// </summary>
[Serializable]
[Obsolete("Query is not implemented.", true)]
public sealed class SubscribePersistenceId : ISubscriptionCommand
{
/// <summary>
/// TBD
/// </summary>
public readonly string PersistenceId;
/// <summary>
/// TBD
/// </summary>
/// <param name="persistenceId">TBD</param>
public SubscribePersistenceId(string persistenceId)
{
PersistenceId = persistenceId;
}
}
/// <summary>
/// TBD
/// </summary>
[Serializable]
[Obsolete("Query is not implemented.", true)]
public sealed class EventAppended : IDeadLetterSuppression
{
/// <summary>
/// TBD
/// </summary>
public readonly string PersistenceId;
/// <summary>
/// TBD
/// </summary>
/// <param name="persistenceId">TBD</param>
public EventAppended(string persistenceId)
{
PersistenceId = persistenceId;
}
}
[Serializable]
public sealed class SelectCurrentPersistenceIds : IJournalRequest
{
public IActorRef ReplyTo { get; }
public long Offset { get; }
public SelectCurrentPersistenceIds(long offset, IActorRef replyTo)
{
Offset = offset;
ReplyTo = replyTo;
}
}
/// <summary>
/// TBD
/// </summary>
[Serializable]
public sealed class CurrentPersistenceIds : IDeadLetterSuppression
{
/// <summary>
/// TBD
/// </summary>
public readonly IEnumerable<string> AllPersistenceIds;
public readonly long HighestOrderingNumber;
/// <summary>
/// TBD
/// </summary>
/// <param name="allPersistenceIds">TBD</param>
/// <param name="highestOrderingNumber">TBD</param>
public CurrentPersistenceIds(IEnumerable<string> allPersistenceIds, long highestOrderingNumber)
{
AllPersistenceIds = allPersistenceIds.ToImmutableHashSet();
HighestOrderingNumber = highestOrderingNumber;
}
}
/// <summary>
/// Subscribe the `sender` to new appended events.
/// Used by query-side. The journal will send <see cref="NewEventAppended"/> messages to
/// the subscriber when `asyncWriteMessages` has been called.
/// </summary>
[Serializable]
[Obsolete("Query is not implemented.", true)]
public sealed class SubscribeNewEvents : ISubscriptionCommand
{
public static SubscribeNewEvents Instance = new SubscribeNewEvents();
private SubscribeNewEvents() { }
}
[Serializable]
[Obsolete("Query is not implemented.", true)]
public sealed class NewEventAppended : IDeadLetterSuppression
{
public static NewEventAppended Instance = new NewEventAppended();
private NewEventAppended() { }
}
/// <summary>
/// Subscribe the `sender` to changes (appended events) for a specific `tag`.
/// Used by query-side. The journal will send <see cref="TaggedEventAppended"/> messages to
/// the subscriber when `asyncWriteMessages` has been called.
/// Events are tagged by wrapping in <see cref="Tagged"/>
/// via an <see cref="IEventAdapter"/>.
/// </summary>
[Serializable]
[Obsolete("Query is not implemented.", true)]
public sealed class SubscribeTag : ISubscriptionCommand
{
/// <summary>
/// TBD
/// </summary>
public readonly string Tag;
/// <summary>
/// TBD
/// </summary>
/// <param name="tag">TBD</param>
public SubscribeTag(string tag)
{
Tag = tag;
}
}
/// <summary>
/// TBD
/// </summary>
[Serializable]
[Obsolete("Query is not implemented.", true)]
public sealed class TaggedEventAppended : IDeadLetterSuppression
{
/// <summary>
/// TBD
/// </summary>
public readonly string Tag;
/// <summary>
/// TBD
/// </summary>
/// <param name="tag">TBD</param>
public TaggedEventAppended(string tag)
{
Tag = tag;
}
}
/// <summary>
/// TBD
/// </summary>
[Serializable]
public sealed class ReplayAllEvents : IJournalRequest
{
/// <summary>
/// TBD
/// </summary>
public readonly long FromOffset;
/// <summary>
/// TBD
/// </summary>
public readonly long ToOffset;
/// <summary>
/// TBD
/// </summary>
public readonly long Max;
/// <summary>
/// TBD
/// </summary>
public readonly IActorRef ReplyTo;
/// <summary>
/// Initializes a new instance of the <see cref="ReplayAllEvents"/> class.
/// </summary>
/// <param name="fromOffset">TBD</param>
/// <param name="toOffset">TBD</param>
/// <param name="max">TBD</param>
/// <param name="replyTo">TBD</param>
/// <exception cref="ArgumentException">
/// This exception is thrown for a number of reasons. These include the following:
/// <ul>
/// <li>The specified <paramref name="fromOffset"/> is less than zero.</li>
/// <li>The specified <paramref name="toOffset"/> is less than or equal to zero.</li>
/// <li>The specified <paramref name="max"/> is less than or equal to zero.</li>
/// </ul>
/// </exception>
public ReplayAllEvents(long fromOffset, long toOffset, long max, IActorRef replyTo)
{
if (fromOffset < 0) throw new ArgumentException("From offset may not be a negative number", nameof(fromOffset));
if (toOffset <= 0) throw new ArgumentException("To offset must be a positive number", nameof(toOffset));
if (max <= 0) throw new ArgumentException("Maximum number of replayed messages must be a positive number", nameof(max));
FromOffset = fromOffset;
ToOffset = toOffset;
Max = max;
ReplyTo = replyTo;
}
}
/// <summary>
/// TBD
/// </summary>
[Serializable]
public sealed class ReplayedEvent : INoSerializationVerificationNeeded, IDeadLetterSuppression
{
/// <summary>
/// TBD
/// </summary>
public readonly IPersistentRepresentation Persistent;
/// <summary>
/// TBD
/// </summary>
public readonly long Offset;
/// <summary>
/// TBD
/// </summary>
/// <param name="persistent">TBD</param>
/// <param name="tag">TBD</param>
/// <param name="offset">TBD</param>
public ReplayedEvent(IPersistentRepresentation persistent, long offset)
{
Persistent = persistent;
Offset = offset;
}
}
public sealed class EventReplaySuccess
{
public EventReplaySuccess(long highestSequenceNr)
{
HighestSequenceNr = highestSequenceNr;
}
/// <summary>
/// Highest stored sequence number.
/// </summary>
public long HighestSequenceNr { get; }
public bool Equals(EventReplaySuccess other)
{
if (other is null) return false;
if (ReferenceEquals(this, other)) return true;
return Equals(HighestSequenceNr, other.HighestSequenceNr);
}
public override bool Equals(object obj)
{
if (!(obj is EventReplaySuccess evt)) return false;
return Equals(evt);
}
public override int GetHashCode() => HighestSequenceNr.GetHashCode();
public override string ToString() => $"EventReplaySuccess<highestSequenceNr: {HighestSequenceNr}>";
}
public sealed class EventReplayFailure
{
public EventReplayFailure(Exception cause)
{
Cause = cause;
}
/// <summary>
/// Highest stored sequence number.
/// </summary>
public Exception Cause { get; }
public bool Equals(EventReplayFailure other)
{
if (other is null) return false;
if (ReferenceEquals(this, other)) return true;
return Equals(Cause, other.Cause);
}
public override bool Equals(object obj)
{
if (!(obj is EventReplayFailure f)) return false;
return Equals(f);
}
public override int GetHashCode() => Cause.GetHashCode();
public override string ToString() => $"EventReplayFailure<cause: {Cause.Message}>";
}
/// <summary>
/// TBD
/// </summary>
[Serializable]
public sealed class ReplayTaggedMessages : IJournalRequest
{
/// <summary>
/// TBD
/// </summary>
public readonly long FromOffset;
/// <summary>
/// TBD
/// </summary>
public readonly long ToOffset;
/// <summary>
/// TBD
/// </summary>
public readonly long Max;
/// <summary>
/// TBD
/// </summary>
public readonly string Tag;
/// <summary>
/// TBD
/// </summary>
public readonly IActorRef ReplyTo;
/// <summary>
/// Initializes a new instance of the <see cref="ReplayTaggedMessages"/> class.
/// </summary>
/// <param name="fromOffset">TBD</param>
/// <param name="toOffset">TBD</param>
/// <param name="max">TBD</param>
/// <param name="tag">TBD</param>
/// <param name="replyTo">TBD</param>
/// <exception cref="ArgumentException">
/// This exception is thrown for a number of reasons. These include the following:
/// <ul>
/// <li>The specified <paramref name="fromOffset"/> is less than zero.</li>
/// <li>The specified <paramref name="toOffset"/> is less than or equal to zero.</li>
/// <li>The specified <paramref name="max"/> is less than or equal to zero.</li>
/// </ul>
/// </exception>
/// <exception cref="ArgumentNullException">
/// This exception is thrown when the specified <paramref name="tag"/> is null or empty.
/// </exception>
public ReplayTaggedMessages(long fromOffset, long toOffset, long max, string tag, IActorRef replyTo)
{
if (fromOffset < 0) throw new ArgumentException("From offset may not be a negative number", nameof(fromOffset));
if (toOffset <= 0) throw new ArgumentException("To offset must be a positive number", nameof(toOffset));
if (max <= 0) throw new ArgumentException("Maximum number of replayed messages must be a positive number", nameof(max));
if (string.IsNullOrEmpty(tag)) throw new ArgumentNullException(nameof(tag), "Replay tagged messages require a tag value to be provided");
FromOffset = fromOffset;
ToOffset = toOffset;
Max = max;
Tag = tag;
ReplyTo = replyTo;
}
}
/// <summary>
/// TBD
/// </summary>
[Serializable]
public sealed class ReplayedTaggedMessage : INoSerializationVerificationNeeded, IDeadLetterSuppression
{
/// <summary>
/// TBD
/// </summary>
public readonly IPersistentRepresentation Persistent;
/// <summary>
/// TBD
/// </summary>
public readonly string Tag;
/// <summary>
/// TBD
/// </summary>
public readonly long Offset;
/// <summary>
/// TBD
/// </summary>
/// <param name="persistent">TBD</param>
/// <param name="tag">TBD</param>
/// <param name="offset">TBD</param>
public ReplayedTaggedMessage(IPersistentRepresentation persistent, string tag, long offset)
{
Persistent = persistent;
Tag = tag;
Offset = offset;
}
}
}