/// <summary>
/// Middleware invoke process
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public async Task Invoke(HttpContext context)
{
if (context.Request.Path.Value.ToLower().Contains("/health"))
{
LightHealthResult healthResult = new LightHealthResult();
healthResult.Status = LightHealth.HealthCheck.Healthy.ToString();
LightHealth.CheckHealth(healthResult);
foreach (var key in healthResult.CartridgesStatus)
{
if (key.Status == LightHealth.HealthCheck.Unhealthy.ToString())
{
healthResult.Status = LightHealth.HealthCheck.Unhealthy.ToString();
context.Response.StatusCode = 503; // ServiceUnavailable
}
else
{
context.Response.StatusCode = 200; // Success
}
}
var jsonFile = JsonConvert.SerializeObject(healthResult);
await context.Response.WriteAsync(jsonFile);
return;
}
await _next.Invoke(context);
}
/// <summary>
/// Check active services, calls the HealthCheck for each active cartridges and return the Dictionary for response
/// </summary>
/// <returns></returns>
private static void CheckActiveServices(LightHealthResult lightHealthResult)
{
foreach (var keys in WorkBench._singletonCache.Keys)
{
LightHealthCartridgeResult cartridgeResult = new LightHealthCartridgeResult();
cartridgeResult.Name = keys.ToString();
cartridgeResult.Status = CheckUp(keys, WorkBench._singletonCache[keys].ToString()).ToString();
lightHealthResult.CartridgesStatus.Add(cartridgeResult);
}
}
/// <summary>
/// Start getting active cartridges at workbench
/// </summary>
/// <returns></returns>
public static void CheckHealth(LightHealthResult lightHealthResult)
{
CheckActiveServices(lightHealthResult);
}