/// <summary>
/// Returns the corresponding <see cref="ContainerConfiguration"/>.
/// If the container does not exist, it tries to read it from the Azure's configuration container by calling ReadConfiguration.
/// </summary>
/// <param name="containerName">Name of the container configuration</param>
/// <param name="autoRefresh">If true, the configuration will automatically refresh by reading its state from the azure storage. Hence, all new configurations will be reflected here automatically.</param>
/// <returns></returns>
public static ContainerConfiguration GetConfiguration(string containerName, bool autoRefresh)
{
if (ContainerConfigurations.ContainsKey(containerName))
{
return(ContainerConfigurations[containerName]);
}
else
{
ContainerConfiguration container = ContainerConfiguration.ReadConfiguration(containerName, /*SessionState.GetInstance()*/ null, autoRefresh);
if (container != null)
{
ContainerConfigurations[containerName] = container;
ICloudBlob blob = container.GetConfigurationContainer().GetBlockBlobReference(ConstPool.CURRENT_CONFIGURATION_BLOB_NAME);
if (blob.Exists())
{
//we break possible leases that are left from last run
//TODO: Remove me
try
{
blob.BreakLease(new TimeSpan(1));
}
catch
{
}
}
}
return(container);
}
}
/// <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);
}
}