From e04440875c4e9910b6bdf70ef0988cb1614f134f Mon Sep 17 00:00:00 2001
From: John Cardinal <support@ayanova.com>
Date: Thu, 4 Jun 2020 22:10:24 +0000
Subject: [PATCH]

---
 .../AyaNova/Controllers/HealthController.cs   | 42 +++++++++++++++++++
 .../Controllers/ServerMetricsController.cs    |  2 +-
 server/AyaNova/Program.cs                     |  2 +-
 server/AyaNova/Startup.cs                     |  1 +
 .../generator/CoreJobMetricsSnapshot.cs       |  2 +-
 5 files changed, 46 insertions(+), 3 deletions(-)
 create mode 100644 server/AyaNova/Controllers/HealthController.cs

diff --git a/server/AyaNova/Controllers/HealthController.cs b/server/AyaNova/Controllers/HealthController.cs
new file mode 100644
index 00000000..c5197c29
--- /dev/null
+++ b/server/AyaNova/Controllers/HealthController.cs
@@ -0,0 +1,42 @@
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Routing;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.Extensions.Diagnostics.HealthChecks;
+using Swashbuckle.AspNetCore.Annotations;
+
+namespace AyaNova.Api.Controllers
+{
+    [ApiController]
+    [ApiVersion("8.0")]
+    [Route("api/v{version:apiVersion}/health")]
+    [Produces("text/plain")]
+    [Authorize]
+    public class HealthController : ControllerBase
+    {
+        private readonly HealthCheckService _healthCheckService;
+        public HealthController(HealthCheckService healthCheckService)
+        {
+            _healthCheckService = healthCheckService;
+        }
+
+        /// <summary>
+        /// Get Health 
+        /// Also available at /health on server root
+        /// confirms liveness and also db availability
+        /// </summary>
+        /// <remarks>Provides an indication about the health of the API</remarks>
+        /// <response code="200">API is healthy</response>
+        /// <response code="503">API is unhealthy or in degraded state</response>
+        [HttpGet]
+        [AllowAnonymous]
+        [ProducesResponseType(typeof(string), 200)]
+        [SwaggerOperation(OperationId = "Health_Get")]
+        public async Task<IActionResult> Get()
+        {
+            var report = await _healthCheckService.CheckHealthAsync();
+            Response.Headers.Add("Cache-Control", "no-store, no-cache");
+            return report.Status == HealthStatus.Healthy ? Ok(report.Status.ToString()) : StatusCode(503, report.Status.ToString());
+        }
+    }//eoc
+}//eons
\ No newline at end of file
diff --git a/server/AyaNova/Controllers/ServerMetricsController.cs b/server/AyaNova/Controllers/ServerMetricsController.cs
index ee25d7c3..880f103d 100644
--- a/server/AyaNova/Controllers/ServerMetricsController.cs
+++ b/server/AyaNova/Controllers/ServerMetricsController.cs
@@ -14,7 +14,7 @@ using Newtonsoft.Json.Linq;
 using AyaNova.Models;
 using AyaNova.Api.ControllerHelpers;
 using AyaNova.Biz;
-using StackExchange.Profiling;
+//using StackExchange.Profiling;
 
 namespace AyaNova.Api.Controllers
 {
diff --git a/server/AyaNova/Program.cs b/server/AyaNova/Program.cs
index eae2f20b..37166cd3 100644
--- a/server/AyaNova/Program.cs
+++ b/server/AyaNova/Program.cs
@@ -10,7 +10,7 @@ using NLog.Web;
 using NLog.Targets;
 using NLog.Config;
 using AyaNova.Util;
-using StackExchange.Profiling;
+//using StackExchange.Profiling;
 
 namespace AyaNova
 {
diff --git a/server/AyaNova/Startup.cs b/server/AyaNova/Startup.cs
index 73ab429e..58ce6449 100644
--- a/server/AyaNova/Startup.cs
+++ b/server/AyaNova/Startup.cs
@@ -23,6 +23,7 @@ using AyaNova.Biz;
 using NLog.Extensions.Logging;
 using StackExchange.Profiling;
 
+
 namespace AyaNova
 {
     public class Startup
diff --git a/server/AyaNova/generator/CoreJobMetricsSnapshot.cs b/server/AyaNova/generator/CoreJobMetricsSnapshot.cs
index 9b4d53f4..7012a462 100644
--- a/server/AyaNova/generator/CoreJobMetricsSnapshot.cs
+++ b/server/AyaNova/generator/CoreJobMetricsSnapshot.cs
@@ -5,7 +5,7 @@ using Microsoft.Extensions.Logging;
 using AyaNova.Util;
 using AyaNova.Models;
 using Microsoft.EntityFrameworkCore;
-using StackExchange.Profiling;
+//using StackExchange.Profiling;
 
 
 namespace AyaNova.Biz