OA2023/OASystem/OASystem.Api/HealthChecks/ExampleHealthCheck.cs

using Microsoft.Extensions.Diagnostics.HealthChecks;

namespace OASystem.API.HealthChecks
{
    public class ExampleHealthCheck : IHealthCheck
    {
        public Task<HealthCheckResult> CheckHealthAsync(
            HealthCheckContext context,
            CancellationToken cancellationToken = default)
        {
            // Here you would check the health of your dependencies
            // For example, check database connection, external services, etc.
            var isHealthy = true; // Replace with actual health check logic

            if (isHealthy)
            {
                return Task.FromResult(
                    HealthCheckResult.Healthy("A healthy result."));
            }

            return Task.FromResult(
                new HealthCheckResult(
                    context.Registration.FailureStatus, "An unhealthy result."));
        }
    }

    public class DatabaseHealthCheck : IHealthCheck
    {
        public async Task<HealthCheckResult> CheckHealthAsync(
            HealthCheckContext context,
            CancellationToken cancellationToken = default)
        {
            try
            {
                // 模拟数据库检查
                await Task.Delay(100, cancellationToken);
                return HealthCheckResult.Healthy("Database is OK");
            }
            catch (Exception ex)
            {
                return HealthCheckResult.Unhealthy("Database failure", ex);
            }
        }
    }

    public class ApiHealthCheck : IHealthCheck
    {
        private readonly HttpClient _httpClient;

        public ApiHealthCheck(HttpClient httpClient) => _httpClient = httpClient;

        public async Task<HealthCheckResult> CheckHealthAsync(
            HealthCheckContext context,
            CancellationToken cancellationToken = default)
        {
            var response = await _httpClient.GetAsync("ping", cancellationToken);
            return response.IsSuccessStatusCode
                ? HealthCheckResult.Healthy("API is responsive")
                : HealthCheckResult.Degraded($"API response: {response.StatusCode}");
        }
    }

}