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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.
namespace Aspire.Hosting.ApplicationModel;
/// <summary>
/// A resource that represents a Redis resource independent of the hosting model.
/// </summary>
/// <param name="name">The name of the resource.</param>
public class RedisResource(string name) : ContainerResource(name), IResourceWithConnectionString
{
internal const string PrimaryEndpointName = "tcp";
private EndpointReference? _primaryEndpoint;
/// <summary>
/// Gets the primary endpoint for the Redis server.
/// </summary>
public EndpointReference PrimaryEndpoint => _primaryEndpoint ??= new(this, PrimaryEndpointName);
private ReferenceExpression ConnectionString =>
ReferenceExpression.Create(
$"{PrimaryEndpoint.Property(EndpointProperty.Host)}:{PrimaryEndpoint.Property(EndpointProperty.Port)}");
/// <summary>
/// Gets the connection string expression for the Redis server.
/// </summary>
public ReferenceExpression ConnectionStringExpression
{
get
{
if (this.TryGetLastAnnotation<ConnectionStringRedirectAnnotation>(out var connectionStringAnnotation))
{
return connectionStringAnnotation.Resource.ConnectionStringExpression;
}
return ConnectionString;
}
}
/// <summary>
/// Gets the connection string for the Redis server.
/// </summary>
/// <param name="cancellationToken"> A <see cref="CancellationToken"/> to observe while waiting for the task to complete.</param>
/// <returns>A connection string for the redis server in the form "host:port".</returns>
public ValueTask<string?> GetConnectionStringAsync(CancellationToken cancellationToken = default)
{
if (this.TryGetLastAnnotation<ConnectionStringRedirectAnnotation>(out var connectionStringAnnotation))
{
return connectionStringAnnotation.Resource.GetConnectionStringAsync(cancellationToken);
}
return ConnectionString.GetValueAsync(cancellationToken);
}
}
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