public void Configure(IApplicationBuilder app)
{
app.UseRouting();
app.UseEndpoints(endpoints =>
{
endpoints.MapMetrics();
endpoints.MapGet("/ping", (ctx) =>
{
return(ctx.Response.WriteAsync("ok"));
});
endpoints.MapGet("/healthz", async(ctx) =>
{
var healthMonitor = ctx.RequestServices.GetRequiredService <IConsecutiveHealthMonitor>();
var uptimeMonitor = ctx.RequestServices.GetRequiredService <IUptimeMonitor>();
var podOptions = ctx.RequestServices.GetRequiredService <IOptions <PodIdentifierOptions> >();
var healthOptions = ctx.RequestServices.GetRequiredService <IOptions <WatchdogHealthzOptions> >();
var lf = ctx.RequestServices.GetRequiredService <ILoggerFactory>();
var logger = lf.CreateLogger <WatchdogHealthz>();
var ns = podOptions.Value.Namespace ?? string.Empty;
var name = podOptions.Value.Name ?? string.Empty;
var alwaysHealthySeconds = healthOptions.Value.AlwaysHealthyAfterSeconds.GetValueOrDefault();
if (ns == string.Empty)
{
throw new ArgumentNullException(nameof(podOptions.Value.Namespace));
}
if (name == string.Empty)
{
throw new ArgumentNullException(nameof(podOptions.Value.Name));
}
var uptime = uptimeMonitor.Uptime;
if (alwaysHealthySeconds > 0 && uptime > TimeSpan.FromSeconds(alwaysHealthySeconds))
{
logger.LogInformation("Uptime {uptime} surpassed {alwaysHealthySeconds}: success", uptime.ToString(), alwaysHealthySeconds);
ctx.Response.StatusCode = 200;
}
var podid = new PodIdentifier(ns, name);
await healthMonitor.Probe(podid);
if (healthMonitor.IsHealthy(podid))
{
logger.LogInformation("Pod {podId} is healthy", podid.ToString());
ctx.Response.StatusCode = 200;
return;
}
logger.LogInformation("Pod {podId} is not healthy or has not been for long enough", podid.ToString());
ctx.Response.StatusCode = 500;
});
});
}
