private static void RemoveFromFailed(IDictionary <string, int> failures, ServiceInstanceData instance)
{
if (failures.ContainsKey(instance.InstanceId))
{
failures.Remove(instance.InstanceId);
}
}
private static void IncreaseFailures(IDictionary <string, int> failures, ServiceInstanceData instance)
{
if (failures.ContainsKey(instance.InstanceId))
{
failures[instance.InstanceId]++;
}
else
{
failures[instance.InstanceId] = 1;
}
}
private static async Task <bool> IsHealthy(ServiceInstanceData instance, ILogger logger)
{
try
{
var httpClient = new HttpClient {
Timeout = TimeSpan.FromSeconds(2)
};
var code = (int)(await httpClient.GetAsync(instance.InstanceAddress + instance.HealthCheckAddress)).StatusCode;
return(code >= 200 && code <= 299);
}
catch
{
return(false);
}
}
private static void RemoveInstanceOnMaxFailure(IDictionary <string, int> failures, ServiceInstanceData instance,
IInstanceRepository repository, ILogger logger)
{
if (failures[instance.InstanceId] == MaxFailures)
{
logger.LogInformation(
$"Reached max health check failures ({MaxFailures}). Removing instance {JsonConvert.SerializeObject(instance)}.");
repository.Remove(instance.InstanceId);
}
}
public void Add(ServiceInstanceData instanceData)
{
_collection.Add(instanceData);
}
