/// <summary>
/// Create a configuration of a CapCloudBlobContainer and save it in the Azure's configuration blob if there is not an instance there.
/// </summary>
/// <param name="capCloudBlobContainerName">The name of the CapCloudBlobContainer</param>
/// <param name="primaryServer"></param>
/// <param name="secondaryServer"></param>
/// <param name="sessionState">session state of the SLAEngine. This state is used for registering, and unregistering newly added/removed replicas</param>
/// <returns></returns>
public static ContainerConfiguration CreateConfiguration(string capCloudBlobContainerName,
string primaryServer, string secondaryServer, SessionState sessionState, bool autoRefresh = false)
{
ContainerConfiguration result = new ContainerConfiguration(capCloudBlobContainerName, primaryServer, secondaryServer, sessionState);
// result.EndCurrentEpoch(); // is this needed?
result.InitializeConfigurationBlob();
result.StartNewEpoch(true);
if (autoRefresh)
{
refreshConfigurationTask = Task.Factory.StartNew(() => result.RefreshConfigurationPeriodically());
}
return(result);
}
/// <summary>
/// Read an already created configuration of a CapCloudBlobContainer from the Azure's configuration blob.
/// </summary>
/// <param name="capCloudBlobContainerName">Name of the CapCloudBlobContainer</param>
/// <param name="sessionState">session state of the SLAEngine. This state is used for registering, and unregistering newly added/removed replicas</param>
/// <param name="autoRefresh">if true, it will automatically refresh the configuration by reading it periodically from the cloud storage.</param>
/// <returns></returns>
public static ContainerConfiguration ReadConfiguration(string capCloudBlobContainerName, SessionState sessionState, bool autoRefresh)
{
ContainerConfiguration result = new ContainerConfiguration(capCloudBlobContainerName, sessionState);
//reads new configuration
result.ReadConfiguration();
if (autoRefresh)
{
refreshConfigurationTask = Task.Factory.StartNew(() => result.RefreshConfigurationPeriodically());
}
if (result.PrimaryServers != null && result.PrimaryServers.Count > 0)
{
return(result);
}
else
{
return(null);
}
}