/// <summary>
/// Called by MultiClusterOracle when there is a configuration change.
/// </summary>
/// <returns></returns>
public async Task OnMultiClusterConfigurationChange(MultiCluster.MultiClusterConfiguration newConfig)
{
Debug.Assert(newConfig != null);
var oldConfig = Configuration;
// process only if newer than what we already have
if (!MultiClusterConfiguration.OlderThan(oldConfig, newConfig))
{
return;
}
Services.Log(LogLevel.Debug, "Processing Configuration {0}", newConfig);
await this.OnConfigurationChange(newConfig); // updates Configuration and does any work required
var added = oldConfig == null ? newConfig.Clusters : newConfig.Clusters.Except(oldConfig.Clusters);
// if the multi-cluster is operated correctly, this grain should not be active before we are joined to the multicluster
// but if we detect that anyway here, enforce a refresh to reduce risk of missed notifications
if (!needInitialRead && added.Contains(Services.MyClusterId))
{
needRefresh = true;
Services.Log(LogLevel.Debug, "Refresh Because of Join");
worker.Notify();
}
if (notificationTracker != null)
{
var remoteInstances = Services.RegistrationStrategy.GetRemoteInstances(newConfig.Clusters, Services.MyClusterId).ToList();
notificationTracker.UpdateNotificationTargets(remoteInstances);
}
}
