internal AzureTableTrimmer(
FabricEvents.ExtensionsEvents traceSource,
string logSourceId,
StorageAccountFactory storageAccountFactory,
string tableName,
TimeSpan entityDeletionAge,
QueryCreationMethod queryCreationMethod,
AzureTablePerformance perfHelper)
{
// Initialization
this.stopping = false;
this.traceSource = traceSource;
this.logSourceId = logSourceId;
this.storageAccountFactory = storageAccountFactory;
this.tableName = tableName;
this.entityDeletionAge = entityDeletionAge;
this.perfHelper = perfHelper;
this.queryCreationMethod = queryCreationMethod;
// Deletion and query are currently synchronous, so the concurrency
// count is 1.
this.perfHelper.ExternalOperationInitialize(
ExternalOperationTime.ExternalOperationType.TableQuery,
1);
this.perfHelper.ExternalOperationInitialize(
ExternalOperationTime.ExternalOperationType.TableDeletion,
1);
// Create a timer to delete old logs
string timerId = String.Concat(
this.logSourceId,
OldLogDeletionTimerIdSuffix);
this.oldLogDeletionTimer = new DcaTimer(
timerId,
this.DeleteOldLogsHandler,
(this.entityDeletionAge < TimeSpan.FromDays(1)) ?
AzureConstants.OldLogDeletionIntervalForTest :
AzureConstants.OldLogDeletionInterval);
this.oldLogDeletionTimer.Start();
}
public AzureTableEtwEventUploader(ConsumerInitializationParameters initParam)
{
// Initialization
this.stopping = false;
this.initParam = initParam;
this.logSourceId = String.Concat(this.initParam.ApplicationInstanceId, "_", this.initParam.SectionName);
this.traceSource = new FabricEvents.ExtensionsEvents(FabricEvents.Tasks.FabricDCA);
this.configReader = new ConfigReader(initParam.ApplicationInstanceId);
this.azureUtility = new AzureUtility(this.traceSource, this.logSourceId);
this.perfHelper = new AzureTablePerformance(this.traceSource, this.logSourceId);
// Make sure that the Azure interfaces are available
if (false == AzureUtility.IsAzureInterfaceAvailable())
{
const string Message = "Due to unavailability of Azure interfaces, ETW traces will not be uploaded to Azure table storage.";
this.traceSource.WriteError(
this.logSourceId,
Message);
throw new InvalidOperationException(Message);
}
this.azureNodeInstanceId = AzureUtility.RoleInstanceId;
// Read table-specific settings from settings.xml
GetSettings();
if (false == this.tableUploadSettings.Enabled)
{
// Upload to Azure table storage is not enabled, so return immediately
return;
}
// Create a sub-directory for ourselves under the log directory
string bufferedEventFolder = GetBufferedEventSubDirectory();
if (String.IsNullOrEmpty(bufferedEventFolder))
{
throw new InvalidOperationException("Unable to get buffered event subdirectory.");
}
// Create the helper object that buffers events delivered from the ETL
// files into CSV files on disk.
this.bufferedEventProvider = new BufferedEtwEventProvider(
new TraceEventSourceFactory(),
this.logSourceId,
bufferedEventFolder,
this.tableUploadSettings.UploadIntervalMinutes,
this.tableUploadSettings.EntityDeletionAge,
this);
if (null == this.bufferedEventProvider)
{
const string Message = "Failed to create buffered event provider helper object.";
this.traceSource.WriteError(
this.logSourceId,
Message);
throw new InvalidOperationException(Message);
}
// Set the filter for Windows Fabric events
this.bufferedEventProvider.SetEtwEventFilter(
this.tableUploadSettings.Filter,
defaultTableFilter,
WinFabSummaryFilter.StringRepresentation,
true);
// Initialize the batch upload concurrency count
Debug.Assert(this.tableUploadSettings.BatchUploadConcurrencyCount <= AzureConstants.MaxBatchConcurrencyCount);
if (this.tableUploadSettings.BatchUploadConcurrencyCount <= AzureConstants.MaxBatchConcurrencyCount)
{
this.batchConcurrencyCount = this.tableUploadSettings.BatchUploadConcurrencyCount;
}
else
{
this.traceSource.WriteError(
this.logSourceId,
"{0} is an invalid value for table batch concurrency count. The maximum supported value is {1} and that value will be used instead.",
this.tableUploadSettings.BatchUploadConcurrencyCount,
AzureConstants.MaxBatchConcurrencyCount);
this.batchConcurrencyCount = AzureConstants.MaxBatchConcurrencyCount;
}
this.perfHelper.ExternalOperationInitialize(
ExternalOperationTime.ExternalOperationType.TableUpload,
this.batchConcurrencyCount);
// Create the table
try
{
CreateTable();
}
catch (Exception e)
{
const string Message =
"Due to an error in table creation ETW traces will not be uploaded to Azure table storage.";
this.traceSource.WriteExceptionAsError(
this.logSourceId,
e,
Message);
throw new InvalidOperationException(Message, e);
}
this.traceSource.WriteInfo(
this.logSourceId,
"Created table for uploading ETW traces. Storage account: {0}, Table name: {1}",
this.tableUploadSettings.StorageAccountFactory.Connection.AccountName,
this.tableUploadSettings.TableName);
// Initialize old log deletion
this.trimmer = new AzureTableTrimmer(
this.traceSource,
this.logSourceId,
this.tableUploadSettings.StorageAccountFactory,
this.tableUploadSettings.TableName,
this.tableUploadSettings.EntityDeletionAge,
this.CreateDeletionQuery,
this.perfHelper);
}
