public IgnoreFailedEndpointsPolicy(List <Uri> endpoints, TimeSpan failedEndpointExpiryInterval, IEndpointIgnorePolicy innerPolicy = null)
{
_failedEndpointExpiryInterval = failedEndpointExpiryInterval;
_innerPolicy = innerPolicy;
_innerPolicyLockObj = new object();
PopulateEndpoints(endpoints);
}
public IgnoreFailedEndpointsPolicy(List<Uri> endpoints, TimeSpan failedEndpointExpiryInterval, IEndpointIgnorePolicy innerPolicy = null)
{
_failedEndpointExpiryInterval = failedEndpointExpiryInterval;
_innerPolicy = innerPolicy;
_innerPolicyLockObj = new object();
PopulateEndpoints(endpoints);
}
internal Uri ChooseEndpointRoundRobin(IEndpointIgnorePolicy policy)
{
Uri chosenEndpoint;
int attemptCounter = 0;
do
{
chosenEndpoint = _allEndpoints[_endpointIndex++ % _allEndpoints.Length];
attemptCounter++;
if (attemptCounter >= _allEndpoints.Length)
{
Trace.TraceWarning("All endpoints were ignored by the policy. Avoiding further skipping.....");
break;
}
} while (policy.ShouldIgnoreEndpoint(chosenEndpoint));
Debug.WriteLine("Endpoint {0} chosen for the request", chosenEndpoint);
return(chosenEndpoint);
}
private void InitializeEndpoints(List <string> regionServerHostNames)
{
Random rnd = new Random();
lockObj = new object();
var endpointsList = new List <Uri>();
_endpointIndex = rnd.Next();
foreach (var server in regionServerHostNames)
{
var candidate = string.Format("http://{0}:{1}", server, _workerRestEndpointPort);
endpointsList.Add(new Uri(candidate));
}
_allEndpoints = endpointsList.OrderBy(x => rnd.Next()).ToArray();
_endpointIgnorePolicy = new IgnoreFailedEndpointsPolicy(endpointsList, _refreshInterval);
}
