/// <summary>
/// Cleanup the Azure storage including both queue and blob.
/// </summary>
private async Task Cleanup()
{
BrokerTracing.TraceVerbose(
"[AzureStorageCleaner].Cleanup: Try to cleanup the Azure storage.");
ClusterInfoContract clusterInfo = await this.helper.GetClusterInfoAsync();
string clusterName = clusterInfo.ClusterName;
Guid clusterId;
if (!Guid.TryParse(clusterInfo.ClusterId, out clusterId))
{
BrokerTracing.TraceError(
"[AzureStorageCleaner].Cleanup: clusterInfo.ClusterId is not a valid GUID string.");
throw new ArgumentException("clusterInfo.ClusterId", "clusterInfo.ClusterId is not a valid GUID string.");
}
var connectionString = clusterInfo.AzureStorageConnectionString;
if (string.IsNullOrEmpty(connectionString))
{
BrokerTracing.TraceVerbose(
"[AzureStorageCleaner].Cleanup: Azure storage connection string is not set.");
// no need to do anything if the connection string is not set
return;
}
string prefix = SoaHelper.GetResponseStoragePrefix(clusterId.ToString());
string prefixAQ = SoaHelper.GetAzureQueueStoragePrefix(clusterId.ToString().ToLower().GetHashCode());
CloudStorageAccount account = CloudStorageAccount.Parse(connectionString);
CloudQueueClient queueClient = account.CreateCloudQueueClient();
queueClient.DefaultRequestOptions.RetryPolicy = DefaultRetryPolicy;
var queues = queueClient.ListQueues(prefix);
var queuesAQ = queueClient.ListQueues(prefixAQ);
CloudBlobClient blobClient = account.CreateCloudBlobClient();
blobClient.DefaultRequestOptions.RetryPolicy = DefaultRetryPolicy;
var containers = blobClient.ListContainers(prefix, ContainerListingDetails.None, null, null);
var containersAQ = blobClient.ListContainers(prefixAQ, ContainerListingDetails.None, null, null);
Dictionary <int, int> nonTerminatedSession;
if (queues.Count <CloudQueue>() > 0 || containers.Count <CloudBlobContainer>() > 0 ||
queuesAQ.Count <CloudQueue>() > 0 || containersAQ.Count <CloudBlobContainer>() > 0)
{
// if there are queue/container candidates for deleting, get
// following info from session service
nonTerminatedSession = await this.helper.GetNonTerminatedSession();
}
else
{
return;
}
// cleanup storage queue
foreach (CloudQueue queue in queues)
{
BrokerTracing.TraceVerbose(
"[AzureStorageCleaner].Cleanup: Azure storage queue name is {0}",
queue.Name);
if (this.IsSessionTerminated(nonTerminatedSession, prefix, queue.Name))
{
try
{
queue.Delete();
}
catch (Exception e)
{
BrokerTracing.TraceError(
"[AzureStorageCleaner].Cleanup: Deleting queue {0} failed, {1}",
queue.Name,
e);
}
}
}
// cleanup storage blob container
foreach (CloudBlobContainer container in containers)
{
BrokerTracing.TraceVerbose(
"[AzureStorageCleaner].Cleanup: Azure storage container name is {0}",
container.Name);
if (this.IsSessionTerminated(nonTerminatedSession, prefix, container.Name))
{
try
{
container.Delete();
}
catch (Exception e)
{
BrokerTracing.TraceError(
"[AzureStorageCleaner].Cleanup: Deleting container {0} failed, {1}",
container.Name,
e);
}
}
}
// cleanup storage queue for the http clients
foreach (CloudQueue queue in queuesAQ)
{
BrokerTracing.TraceVerbose(
"[AzureStorageCleaner].Cleanup: Azure storage queue name is {0}",
queue.Name);
if (this.IsSessionTerminatedAQ(nonTerminatedSession, prefixAQ, queue.Name))
{
try
{
queue.Delete();
}
catch (Exception e)
{
BrokerTracing.TraceError(
"[AzureStorageCleaner].Cleanup: Deleting queue {0} failed, {1}",
queue.Name,
e);
}
}
}
// cleanup storage blob container for the http clients
foreach (CloudBlobContainer container in containersAQ)
{
BrokerTracing.TraceVerbose(
"[AzureStorageCleaner].Cleanup: Azure storage container name is {0}",
container.Name);
if (this.IsSessionTerminatedAQ(nonTerminatedSession, prefixAQ, container.Name))
{
try
{
container.Delete();
}
catch (Exception e)
{
BrokerTracing.TraceError(
"[AzureStorageCleaner].Cleanup: Deleting container {0} failed, {1}",
container.Name,
e);
}
}
}
}
