private Dictionary <string, string> HealthData()
{
lock (_lock)
{
return(new Dictionary <string, string>
{
{ "ReachableHosts", string.Join(",", ReachableHosts.Select(_ => _.HostName)) },
{ "UnreachableHosts", string.Join(",", UnreachableHosts.Select(_ => _.HostName)) }
});
}
}
private ValueTask <HealthCheckResult> CheckHealth()
{
var config = GetConfig();
if (IsHealthCheckSuppressed(config))
{
return(new ValueTask <HealthCheckResult>(HealthCheckResult.Healthy($"Health check suppressed because service was not in use for more than {config.SuppressHealthCheckAfterServiceUnused.TotalSeconds} seconds.")));
}
int reachableCount;
int unreachableCount;
Exception exception;
string[] unreachableHosts;
lock (_lock)
{
reachableCount = ReachableHosts.Count;
unreachableHosts = UnreachableHosts.Select(x => $"{x.HostName}:{x.Port}").ToArray();
unreachableCount = unreachableHosts.Length;
exception = UnreachableHosts.FirstOrDefault()?.LastException;
}
if (reachableCount == 0)
{
return(new ValueTask <HealthCheckResult>(HealthCheckResult.Unhealthy($"All of the {unreachableCount} hosts are unreachable: " +
$"{string.Join(",", unreachableHosts)}. Last exception: {HealthMonitor.GetMessages(exception)}")));
}
else
{
if (unreachableCount > 0)
{
return(new ValueTask <HealthCheckResult>(HealthCheckResult.Unhealthy($"The following {unreachableCount} hosts " +
$"(out of {unreachableCount + reachableCount}) are unreachable: {string.Join(",", unreachableHosts)}. " +
$"Last exception: {HealthMonitor.GetMessages(exception)}")));
}
else
{
return(new ValueTask <HealthCheckResult>(HealthCheckResult.Healthy($"All {reachableCount} hosts are reachable.")));
}
}
}