JiShe.CollectBus/web/JiShe.CollectBus.Host/HealthChecks/CassandraHealthCheck.cs

//using Cassandra;
//using JiShe.CollectBus.Cassandra;
using Microsoft.Extensions.Diagnostics.HealthChecks;

namespace JiShe.CollectBus.Host.HealthChecks
{
    /// <summary>
    /// CassandraHealthCheck
    /// </summary>
    /// <seealso cref="Microsoft.Extensions.Diagnostics.HealthChecks.IHealthCheck" />
    public class CassandraHealthCheck : IHealthCheck
    {
        private readonly IConfiguration _configuration;

        /// <summary>
        /// Initializes a new instance of the <see cref="CassandraHealthCheck"/> class.
        /// </summary>
        /// <param name="configuration">The configuration.</param>
        public CassandraHealthCheck(IConfiguration configuration)
        {
            _configuration = configuration;
        }

        /// <summary>
        /// Runs the health check, returning the status of the component being checked.
        /// </summary>
        /// <param name="context">A context object associated with the current execution.</param>
        /// <param name="cancellationToken">A <see cref="T:System.Threading.CancellationToken" /> that can be used to cancel the health check.</param>
        /// <returns>
        /// A <see cref="T:System.Threading.Tasks.Task`1" /> that completes when the health check has finished, yielding the status of the component being checked.
        /// </returns>
        public async Task<HealthCheckResult> CheckHealthAsync(HealthCheckContext context, CancellationToken cancellationToken = default)
        {
            return HealthCheckResult.Healthy("Cassandra is  unhealthy.");
            //var cassandraConfig = new CassandraConfig();
            //_configuration.GetSection("Cassandra").Bind(cassandraConfig);
            //try
            //{
            //    var clusterBuilder = Cluster.Builder();
            //    foreach (var node in cassandraConfig.Nodes)
            //    {
            //        clusterBuilder.AddContactPoint(node.Host)
            //            .WithPort(node.Port);
            //    }
            //    clusterBuilder.WithCredentials(cassandraConfig.Username, cassandraConfig.Password);
            //    var cluster = clusterBuilder.Build();
            //    using var session = await cluster.ConnectAsync();
            //    var result = await Task.FromResult(session.Execute("SELECT release_version FROM system.local"));
            //    var version = result.First().GetValue<string>("release_version");
            //    return HealthCheckResult.Healthy($"Cassandra is healthy. Version: {version}");
            //}
            //catch (Exception ex)
            //{
            //    return new HealthCheckResult(context.Registration.FailureStatus, $"Cassandra is unhealthy: {ex.Message}", ex);
            //}
        }
    }
}