public override async Task <HttpResponseMessage> ExecuteAsync(HttpControllerContext controllerContext, CancellationToken cancellationToken)
{
if (ForceClusterAwareness == false)
{
var clusterAwareHeader = GetClusterHeader(controllerContext, Constants.Cluster.ClusterAwareHeader);
bool clusterAware;
if (clusterAwareHeader == null || bool.TryParse(clusterAwareHeader, out clusterAware) == false || clusterAware == false)
{
return(await base.ExecuteAsync(controllerContext, cancellationToken).ConfigureAwait(false));
}
}
InnerInitialization(controllerContext);
if (CounterStorage == null || ClusterManager.IsActive() == false)
{
return(await base.ExecuteAsync(controllerContext, cancellationToken).ConfigureAwait(false));
}
if (CountersName != null && await CountersLandlord.GetResourceInternal(CountersName).ConfigureAwait(false) == null)
{
var msg = "Could not find a counter named: " + CountersName;
return(GetMessageWithObject(new { Error = msg }, HttpStatusCode.ServiceUnavailable));
}
if (CounterStorage.IsClusterDatabase() == false)
{
return(await base.ExecuteAsync(controllerContext, cancellationToken).ConfigureAwait(false));
}
if (ClusterManager.IsLeader())
{
return(await base.ExecuteAsync(controllerContext, cancellationToken).ConfigureAwait(false));
}
if (IsReadRequest(controllerContext))
{
var clusterReadBehaviorHeader = GetClusterHeader(controllerContext, Constants.Cluster.ClusterReadBehaviorHeader);
if (string.Equals(clusterReadBehaviorHeader, "All", StringComparison.OrdinalIgnoreCase))
{
return(await base.ExecuteAsync(controllerContext, cancellationToken).ConfigureAwait(false));
}
}
var clusterFailoverBehaviorHeader = GetClusterHeader(controllerContext, Constants.Cluster.ClusterFailoverBehaviorHeader);
bool clusterFailoverBehavior;
if (bool.TryParse(clusterFailoverBehaviorHeader, out clusterFailoverBehavior) && clusterFailoverBehavior)
{
return(await base.ExecuteAsync(controllerContext, cancellationToken).ConfigureAwait(false));
}
return(RedirectToLeader(controllerContext.Request));
}
