public void Modify_should_not_modify_weight_when_is_not_local_dc()
{
datacenters.GetLocalDatacenter().Returns("dc");
datacenters.GetDatacenterWeak(Arg.Any <string>()).Returns("dc1");
modifier.Modify(new Uri("http://url.com/"), null, null, null, null, ref weight);
weight.Should().Be(1.0);
}
public void Modify(Uri replica, IList <Uri> allReplicas, IReplicaStorageProvider storageProvider, Request request, RequestParameters parameters, ref double weight)
{
if (weight < minimumWeightForBoostingProvider())
{
return;
}
var localDatacenter = datacenters.GetLocalDatacenter();
var replicaDatacenter = datacenters.GetDatacenterWeak(replica.Host);
if (string.Equals(localDatacenter, replicaDatacenter, StringComparison.OrdinalIgnoreCase))
{
weight *= boostMultiplierProvider();
}
}
private void LogLocalDatacenter(IDatacenters datacenters) =>
log.Info("Application datacenter: {DatacenterName}.", datacenters.GetLocalDatacenter() ?? "unknown");
public async Task InvokeAsync(HttpContext context)
{
if (options.RejectRequestsWhenDatacenterIsInactive && !datacenters.LocalDatacenterIsActive())
{
context.Response.StatusCode = options.RejectionResponseCode;
log.Warn("Rejecting request as local datacenter '{Datacenter}' is not active.", datacenters.GetLocalDatacenter());
return;
}
await next(context);
}
/// <summary>
/// <para>Returns <c>true</c> if current local datacenter is among ones listed in result of <see cref="IDatacenters.GetActiveDatacenters"/>.</para>
/// <para>Also returns <c>true</c> if local datacenter cannot be determined.</para>
/// </summary>
public static bool LocalDatacenterIsActive([NotNull] this IDatacenters datacenters)
{
var localDatacenter = datacenters.GetLocalDatacenter();
return(localDatacenter == null || datacenters.GetActiveDatacenters().Contains(localDatacenter));
}
public string GetLocalDatacenter() => baseDatacenters.GetLocalDatacenter();
