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HubMethodInvocationMessage.cs
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HubMethodInvocationMessage.cs
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System;
using System.Linq;
using Microsoft.AspNetCore.Shared;
namespace Microsoft.AspNetCore.SignalR.Protocol;
/// <summary>
/// A base class for hub messages representing an invocation.
/// </summary>
public abstract class HubMethodInvocationMessage : HubInvocationMessage
{
/// <summary>
/// Gets the target method name.
/// </summary>
public string Target { get; }
/// <summary>
/// Gets the target method arguments.
/// </summary>
public object?[] Arguments { get; }
/// <summary>
/// The target methods stream IDs.
/// </summary>
public string[]? StreamIds { get; }
/// <summary>
/// Initializes a new instance of the <see cref="HubMethodInvocationMessage"/> class.
/// </summary>
/// <param name="invocationId">The invocation ID.</param>
/// <param name="target">The target method name.</param>
/// <param name="arguments">The target method arguments.</param>
/// <param name="streamIds">The target methods stream IDs.</param>
protected HubMethodInvocationMessage(string? invocationId, string target, object?[] arguments, string[]? streamIds)
: this(invocationId, target, arguments)
{
StreamIds = streamIds;
}
/// <summary>
/// Initializes a new instance of the <see cref="HubMethodInvocationMessage"/> class.
/// </summary>
/// <param name="invocationId">The invocation ID.</param>
/// <param name="target">The target method name.</param>
/// <param name="arguments">The target method arguments.</param>
protected HubMethodInvocationMessage(string? invocationId, string target, object?[] arguments)
: base(invocationId)
{
ArgumentThrowHelper.ThrowIfNullOrEmpty(target);
Target = target;
Arguments = arguments;
}
}
/// <summary>
/// A hub message representing a non-streaming invocation.
/// </summary>
public class InvocationMessage : HubMethodInvocationMessage
{
/// <summary>
/// Initializes a new instance of the <see cref="InvocationMessage"/> class.
/// </summary>
/// <param name="target">The target method name.</param>
/// <param name="arguments">The target method arguments.</param>
public InvocationMessage(string target, object?[] arguments)
: this(null, target, arguments)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="InvocationMessage"/> class.
/// </summary>
/// <param name="invocationId">The invocation ID.</param>
/// <param name="target">The target method name.</param>
/// <param name="arguments">The target method arguments.</param>
public InvocationMessage(string? invocationId, string target, object?[] arguments)
: base(invocationId, target, arguments)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="InvocationMessage"/> class.
/// </summary>
/// <param name="invocationId">The invocation ID.</param>
/// <param name="target">The target method name.</param>
/// <param name="arguments">The target method arguments.</param>
/// <param name="streamIds">The target methods stream IDs.</param>
public InvocationMessage(string? invocationId, string target, object?[] arguments, string[]? streamIds)
: base(invocationId, target, arguments, streamIds)
{
}
/// <inheritdoc />
public override string ToString()
{
string args;
string streamIds;
try
{
args = Arguments == null ? string.Empty : string.Join(", ", Arguments.Select(a => a?.ToString()));
}
catch (Exception ex)
{
args = $"Error: {ex.Message}";
}
try
{
streamIds = string.Join(", ", StreamIds != null ? StreamIds.Select(id => id?.ToString()) : Array.Empty<string>());
}
catch (Exception ex)
{
streamIds = $"Error: {ex.Message}";
}
return $"InvocationMessage {{ {nameof(InvocationId)}: \"{InvocationId}\", {nameof(Target)}: \"{Target}\", {nameof(Arguments)}: [ {args} ], {nameof(StreamIds)}: [ {streamIds} ] }}";
}
}
/// <summary>
/// A hub message representing a streaming invocation.
/// </summary>
public class StreamInvocationMessage : HubMethodInvocationMessage
{
/// <summary>
/// Initializes a new instance of the <see cref="StreamInvocationMessage"/> class.
/// </summary>
/// <param name="invocationId">The invocation ID.</param>
/// <param name="target">The target method name.</param>
/// <param name="arguments">The target method arguments.</param>
public StreamInvocationMessage(string invocationId, string target, object?[] arguments)
: base(invocationId, target, arguments)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="StreamInvocationMessage"/> class.
/// </summary>
/// <param name="invocationId">The invocation ID.</param>
/// <param name="target">The target method name.</param>
/// <param name="arguments">The target method arguments.</param>
/// <param name="streamIds">The target methods stream IDs.</param>
public StreamInvocationMessage(string invocationId, string target, object?[] arguments, string[]? streamIds)
: base(invocationId, target, arguments, streamIds)
{
}
/// <inheritdoc />
public override string ToString()
{
string args;
string streamIds;
try
{
args = Arguments == null ? string.Empty : string.Join(", ", Arguments.Select(a => a?.ToString()));
}
catch (Exception ex)
{
args = $"Error: {ex.Message}";
}
try
{
streamIds = string.Join(", ", StreamIds != null ? StreamIds.Select(id => id?.ToString()) : Array.Empty<string>());
}
catch (Exception ex)
{
streamIds = $"Error: {ex.Message}";
}
return $"StreamInvocation {{ {nameof(InvocationId)}: \"{InvocationId}\", {nameof(Target)}: \"{Target}\", {nameof(Arguments)}: [ {args} ], {nameof(StreamIds)}: [ {streamIds} ] }}";
}
}