public void RetriesToExecuteActionWhenSqlExceptionDuringCommandExecution()
{
RetryManager.SetDefault(this.retryPolicySettings.BuildRetryManager(), false);
var connectionString = ConfigurationManager.ConnectionStrings["TestDatabase"].ConnectionString;
var reliableConnection = new ReliableSqlConnection(connectionString);
int count = 0;
try
{
var retryPolicy = this.retryManager.GetRetryPolicy <SqlDatabaseTransientErrorDetectionStrategy>("Retry 5 times");
retryPolicy.ExecuteAction(() =>
{
SqlCommand command = new SqlCommand("FAIL");
count = reliableConnection.ExecuteCommand(command);
});
Assert.AreEqual(-1, count);
}
catch (SqlException)
{
Assert.AreEqual <ConnectionState>(ConnectionState.Closed, reliableConnection.Current.State);
}
catch (Exception)
{
Assert.Fail();
}
}
public void ExecutesXmlReaderWithRetryPolicy()
{
RetryManager.SetDefault(this.retryPolicySettings.BuildRetryManager(), false);
var connectionString = ConfigurationManager.ConnectionStrings["TestDatabase"].ConnectionString;
var reliableConnection = new ReliableSqlConnection(connectionString);
XmlReader reader;
int count = 0;
try
{
var retryPolicy = this.retryManager.GetRetryPolicy <SqlDatabaseTransientErrorDetectionStrategy>("Retry 5 times");
retryPolicy.ExecuteAction(() =>
{
SqlCommand command = new SqlCommand("SELECT 1 FOR XML AUTO", reliableConnection.Current);
reader = command.ExecuteXmlReaderWithRetry(retryPolicy);
while (reader.Read())
{
reader.MoveToFirstAttribute();
reader.ReadAttributeValue();
count = reader.ReadContentAsInt();
}
});
Assert.AreEqual(1, count);
}
catch (SqlException)
{ }
catch (Exception)
{
Assert.Fail();
}
}
public void ExecutesNonQuerySqlCommandWithConnectionRetryPolicyAndSqlCommandRetryPolicy()
{
RetryManager.SetDefault(this.retryPolicySettings.BuildRetryManager(), false);
var connectionString = ConfigurationManager.ConnectionStrings["TestDatabase"].ConnectionString;
var reliableConnection = new ReliableSqlConnection(connectionString);
int count = 0;
try
{
var retryPolicy = this.retryManager.GetRetryPolicy <SqlDatabaseTransientErrorDetectionStrategy>("Retry 5 times");
retryPolicy.ExecuteAction(() =>
{
SqlCommand command = new SqlCommand("SELECT 1", reliableConnection.Current);
count = (int)command.ExecuteNonQueryWithRetry(retryPolicy, retryPolicy);
});
Assert.AreEqual(-1, count);
}
catch (SqlException)
{ }
catch (Exception)
{
Assert.Fail();
}
}
public override HistoryMemento OnExecute(IHistoryWorkspace historyWorkspace)
{
SelectionData state = null;
SegmentedList <HistoryMemento> actions = new SegmentedList <HistoryMemento>();
if (!historyWorkspace.Selection.IsEmpty)
{
state = historyWorkspace.Selection.Save();
HistoryMemento memento3 = new DeselectFunction().Execute(historyWorkspace);
actions.Add(memento3);
}
ReplaceDocumentHistoryMemento item = new ReplaceDocumentHistoryMemento(null, null, historyWorkspace);
actions.Add(item);
CompoundHistoryMemento memento2 = new CompoundHistoryMemento(StaticName, PdnResources.GetImageResource("Icons.MenuImageFlattenIcon.png"), actions);
Document document = RetryManager.RunMemorySensitiveOperation <Document>(() => historyWorkspace.Document.Flatten());
base.EnterCriticalRegion();
historyWorkspace.Document = document;
if (state != null)
{
SelectionHistoryMemento newHA = new SelectionHistoryMemento(null, null, historyWorkspace);
historyWorkspace.Selection.Restore(state);
memento2.AddMemento(newHA);
}
return(memento2);
}
public async Task <SessionInfo> GetResourceInfo(SessionAttachInfo attachInfo, TimeSpan timeout)
{
this.client.InnerChannel.OperationTimeout = timeout;
RetryManager retry = SoaHelper.GetDefaultExponentialRetryManager();
SessionInfo info;
DateTime startTime = DateTime.Now;
if (attachInfo.TransportScheme == TransportScheme.Http)
{
info = Utility.BuildSessionInfoFromDataContract(
await RetryHelper <SessionInfoContract> .InvokeOperationAsync(
async() => await this.client.GetInfoAsync(SessionLauncherClient.HttpsEndpointPrefix, attachInfo.SessionId).ConfigureAwait(false),
(e, r) =>
{
var remainingTime = GetRemainingTime(timeout, startTime);
if ((e is EndpointNotFoundException || (e is CommunicationException && !(e is FaultException <SessionFault>))) && remainingTime > TimeSpan.Zero)
{
Utility.SafeCloseCommunicateObject(this.client);
this.client = new SessionLauncherClient(attachInfo, this.binding);
this.client.InnerChannel.OperationTimeout = remainingTime;
}
else
{
r.MaxRetryCount = 0;
}
return(Task.CompletedTask);
},
retry)
.ConfigureAwait(false));
}
else
{
info = Utility.BuildSessionInfoFromDataContract(
await RetryHelper <SessionInfoContract> .InvokeOperationAsync(
async() => await this.client.GetInfoAsync(SessionLauncherClient.EndpointPrefix, attachInfo.SessionId).ConfigureAwait(false),
(e, r) =>
{
var remainingTime = GetRemainingTime(timeout, startTime);
if ((e is EndpointNotFoundException || (e is CommunicationException && !(e is FaultException <SessionFault>))) && remainingTime > TimeSpan.Zero)
{
Utility.SafeCloseCommunicateObject(this.client);
this.client = new SessionLauncherClient(attachInfo, this.binding);
this.client.InnerChannel.OperationTimeout = remainingTime;
}
else
{
r.MaxRetryCount = 0;
}
return(Task.CompletedTask);
},
retry)
.ConfigureAwait(false));
}
return(info);
}
/// <summary>
/// Gets SOA configurations
/// </summary>
/// <param name="keys">indicating the keys</param>
/// <returns>returns the values</returns>
public async Task <Dictionary <string, string> > GetSOAConfigurations(List <string> keys)
{
RetryManager retry = SoaHelper.GetDefaultExponentialRetryManager();
return(await RetryHelper <Dictionary <string, string> > .InvokeOperationAsync(
async() =>
{
using (BrokerIdentity identity = new BrokerIdentity())
{
identity.Impersonate();
return await this.sessionLauncherClient.Value.GetSOAConfigurationsAsync(keys);
}
},
async (e, r) =>
{
TraceHelper.TraceEvent(
TraceEventType.Warning,
"[SchedulerHelper] Failed to get SOA configuration, Key:{0}, Retry:{1}, Error:{2}",
string.Join(",", keys),
r.RetryCount,
e);
await this.RenewSessionLauncherClientAsync();
},
retry));
}
static RetryPolicyFactory()
{
var strategy = new FixedInterval("fixed", 10, TimeSpan.FromSeconds(3));
var strategies = new List<RetryStrategy> { strategy };
var manager = new RetryManager(strategies, "fixed");
RetryManager.SetDefault(manager);
}
public void RetryConfigurationTest()
{
RetryManager retryManager = RetryConfiguration.GetRetryManager();
Assert.IsNotNull(retryManager);
try
{
retryManager = RetryConfiguration.GetRetryManager("app.ini");
Assert.Fail();
}
catch (ArgumentException exception)
{
Trace.WriteLine(exception);
}
try
{
retryManager = RetryConfiguration.GetRetryManager("app.json");
Assert.Fail();
}
catch (ArgumentException exception)
{
Trace.WriteLine(exception);
}
try
{
retryManager = RetryConfiguration.GetRetryManager("app.xml");
Assert.Fail();
}
catch (ArgumentException exception)
{
Trace.WriteLine(exception);
}
IDictionary <string, RetryStrategy> retryStrategies;
try
{
retryStrategies = RetryConfiguration.GetRetryStrategies();
Assert.Fail();
}
catch (ArgumentException exception)
{
Trace.WriteLine(exception);
}
retryStrategies = RetryConfiguration.GetRetryStrategies("app.ini");
Assert.IsNotNull(retryStrategies);
Assert.IsTrue(retryStrategies.Count > 0);
retryStrategies = RetryConfiguration.GetRetryStrategies("app.json");
Assert.IsNotNull(retryStrategies);
Assert.IsTrue(retryStrategies.Count > 0);
retryStrategies = RetryConfiguration.GetRetryStrategies("app.xml");
Assert.IsNotNull(retryStrategies);
Assert.IsTrue(retryStrategies.Count > 0);
}
/// <summary>
/// Log authentication errors, reauthorization events and request errors
/// </summary>
/// <param name="logger"></param>
/// <returns></returns>
public Client SetLogger(ISwiftLogger logger)
{
_logger = logger;
RetryManager.SetLogger(logger);
return(this);
}
public void TransactionsCanBeOpenedInParallel()
{
// Clear the retry manager as one of the things this test tests
// is a race condition setting the retry manager when RetryManager.Instance is called
RetryManager.SetDefault(null, false);
Enumerable.Range(0, 5)
.AsParallel()
.WithDegreeOfParallelism(10)
.ForAll(
x =>
{
try
{
using var trn = Store.BeginTransaction(name: "Transaction " + x);
Console.WriteLine($"Transaction {x}: Opened");
}
catch (Exception e)
{
Console.WriteLine($"Transaction {x}: Failed {e.Message}");
throw;
}
}
);
}
private static RetryManager GetDefaultRetryManager()
{
const int retryCount = 4;
const int minBackoffDelayMilliseconds = 2000;
const int maxBackoffDelayMilliseconds = 8000;
const int deltaBackoffMilliseconds = 2000;
var exponentialBackoffStrategy =
new ExponentialBackoff(
"exponentialBackoffStrategy",
retryCount,
TimeSpan.FromMilliseconds(minBackoffDelayMilliseconds),
TimeSpan.FromMilliseconds(maxBackoffDelayMilliseconds),
TimeSpan.FromMilliseconds(deltaBackoffMilliseconds)
);
var manager = new RetryManager(
new List <RetryStrategy>
{
exponentialBackoffStrategy
},
exponentialBackoffStrategy.Name
);
return(manager);
}
protected override void Arrange()
{
this.defaultStrategy = new FixedIntervalRetryStrategy("default", 5, TimeSpan.FromMilliseconds(10));
this.otherStrategy = new IncrementalRetryStrategy("other", 5, TimeSpan.FromMilliseconds(10), TimeSpan.FromMilliseconds(10));
this.defaultSqlConnectionStrategy = new FixedIntervalRetryStrategy("defaultSqlConnection", 5, TimeSpan.FromMilliseconds(10));
this.defaultSqlCommandStrategy = new FixedIntervalRetryStrategy("defaultSqlCommand", 5, TimeSpan.FromMilliseconds(10));
this.managerWithAllDefaults = new RetryManager(
new[]
{
this.defaultStrategy,
this.defaultSqlConnectionStrategy,
this.defaultSqlCommandStrategy,
this.otherStrategy,
},
"default",
new Dictionary <string, string>
{
{ "SQL", "defaultSqlCommand" },
{ "SQLConnection", "defaultSqlConnection" },
});
this.managerWithOnlyDefault = new RetryManager(
new[]
{
this.defaultStrategy,
this.defaultSqlConnectionStrategy,
this.defaultSqlCommandStrategy,
this.otherStrategy,
},
"default");
}
public DatabaseConnections()
{
_masterDatabaseName = "master";
_platformDatabaseName = "Platform";
_accountsDatabaseName = "Accounts";
//_membershipTableName = ""; // <-- Set based on Account Partition
//_accountDatabasePartitionName = ""; //< -- Set based on user
//_inventoryUserName = ""; //< -- Set based on user
//Retry Policies=================================
// Get an instance of the RetryManager class.
//var retryManager = EnterpriseLibraryContainer.Current.GetInstance<RetryManager>();
// Create a retry policy that uses a default retry strategy from the
// configuration.
retryPolicy = new RetryPolicy <DefaultRetryStrategy>(5, new TimeSpan(0, 0, 3));
var retryInterval = TimeSpan.FromSeconds(3);
var strategy = new FixedInterval("fixed", 4, retryInterval);
var strategies = new List <RetryStrategy> {
strategy
};
var manager = new RetryManager(strategies, "fixed");
RetryManager.SetDefault(manager);
}
public void Execute()
{
var publisher = new PublishingWebService(output,
webServiceRootUrl,
webServiceControllerPath,
webServiceLogin,
webServicePassword);
var slacker = new SlackService(output, slackIntegrationSubUrl);
var binDir = new DirectoryInfo(packageBinPath);
var targetVersionDatFile = new FileInfo(Path.Combine(binDir.FullName, "version.dat"));
File.WriteAllText(targetVersionDatFile.FullName, version.ConvertIntoVersionDatContents());
var zipper = new FastZip();
var zipFile = new FileInfo(Path.Combine(tempDir, string.Format("{0}.zip", BuildFileName())));
zipper.CreateZip(zipFile.FullName, binDir.FullName, true, null);
RetryManager.AutoRetry(() => publisher.Publish(zipFile, version.BuildCode, version.BuildNumber));
output.Write("Publishing operation completed.");
RetryManager.AutoRetry(
() => slacker.SendMessage(string.Format("Published {0} to {1}", BuildFileName(), webServiceRootUrl)));
}
private void InitRetryPolicy()
{
// Get an instance of the RetryManager class.
_retryManager = _retryManager ?? RetryPolicyFactory.CreateDefault();
_connRetryPolicy = _retryManager.GetDefaultSqlConnectionRetryPolicy();
_cmdRetryPolicy = _retryManager.GetDefaultSqlCommandRetryPolicy();
}
public async Task FreeResource(SessionStartInfo startInfo, string sessionId)
{
try
{
if (!sessionId.Equals("0"))
{
RetryManager retry = SoaHelper.GetDefaultExponentialRetryManager();
await RetryHelper <object> .InvokeOperationAsync(
async() =>
{
await this.client.TerminateAsync(sessionId).ConfigureAwait(false);
return(null);
},
(e, r) =>
{
if (e is EndpointNotFoundException)
{
Utility.SafeCloseCommunicateObject(this.client);
this.client = new SessionLauncherClient(startInfo, this.binding);
}
else
{
r.MaxRetryCount = 0;
}
return(Task.CompletedTask);
},
retry).ConfigureAwait(false);
}
}
catch
{
// if terminate the session failed, then do nothing here.
}
}
/// <summary>
/// Gets the custom broker registration from service registration file
/// </summary>
/// <param name="serviceRegistrationPath">indicating the path of the service registration file</param>
/// <returns>returns the instance of CustomBrokerRegistration class</returns>
private static CustomBrokerRegistration GetCustomBroker(string serviceRegistrationPath)
{
try
{
ExeConfigurationFileMap map = new ExeConfigurationFileMap();
map.ExeConfigFilename = serviceRegistrationPath;
Configuration config = null;
RetryManager.RetryOnceAsync(
() => config = ConfigurationManager.OpenMappedExeConfiguration(map, ConfigurationUserLevel.None),
TimeSpan.FromSeconds(1),
ex => ex is ConfigurationErrorsException)
.GetAwaiter()
.GetResult();
BrokerConfigurations brokerConfig = BrokerConfigurations.GetSectionGroup(config);
if (brokerConfig == null)
{
return(null);
}
else
{
return(brokerConfig.CustomBroker);
}
}
catch (ConfigurationErrorsException e)
{
ThrowHelper.ThrowSessionFault(SOAFaultCode.ConfigFile_Invalid,
"{0}",
e.ToString());
return(null);
}
}
/// <summary>
/// Creates a retry manager from the system configuration.
/// </summary>
/// <returns></returns>
public static RetryManager CreateDefault(
string configurationFile = RetryConfiguration.DefaultConfigurationFile, string configurationKey = nameof(RetryManager), Func <IConfigurationSection, RetryStrategy>?getCustomRetryStrategy = null)
{
RetryManager manager = RetryConfiguration.GetRetryManager(configurationFile.NotNullOrEmpty(), configurationKey.NotNullOrEmpty(), getCustomRetryStrategy);
RetryManager.SetDefault(manager);
return(manager);
}
public static RetryPolicy GetRetryPolicy(this RetryManager retryManager)
{
if (retryManager == null)
{
throw new ArgumentNullException("retryManager");
}
return(retryManager.GetRetryPolicy <AcceptAllErrorsDetectionStrategy>());
}
public AzureActivityRepository()
{
// set up retry strategy [EnterpriseLibrary Transient Fault Handling Block]
var strategy = new FixedInterval("fixed", 10, TimeSpan.FromSeconds(3));
var strategies = new List<RetryStrategy> { strategy };
var manager = new RetryManager(strategies, "fixed");
RetryManager.SetDefault(manager, false);
}
/// <summary>
/// Returns the default retry policy dedicated to handling transient conditions with Npgsql commands.
/// </summary>
/// <returns>The retry policy for Npgsql commands with the corresponding default strategy (or the default strategy, if no retry strategy assigned to Npgsql commands was found).</returns>
public static RetryPolicy GetDefaultNpgsqlCommandRetryPolicy(this RetryManager retryManager)
{
if (retryManager == null)
{
throw new ArgumentNullException("retryManager");
}
return(new RetryPolicy(new PostgreSqlDatabaseTransientErrorDetectionStrategy(), retryManager.GetDefaultNpgsqlCommandRetryStrategy()));
}
/// <summary>
/// Returns the default retry strategy for Oracle commands.
/// </summary>
/// <returns>The default retry strategy for Oracle commands (or the default strategy, if no default could be found).</returns>
public static RetryStrategy GetDefaultOracleCommandRetryStrategy(this RetryManager retryManager)
{
if (retryManager == null)
{
throw new ArgumentNullException("retryManager");
}
return(retryManager.GetDefaultRetryStrategy(DefaultStrategyCommandTechnologyName));
}
/// <summary>
/// Returns the default retry policy dedicated to handling transient conditions with Oracle connections.
/// </summary>
/// <returns>The retry policy for Oracle connections with the corresponding default strategy (or the default strategy, if no retry strategy for Oracle connections was found).</returns>
public static RetryPolicy GetDefaultOracleConnectionRetryPolicy(this RetryManager retryManager)
{
if (retryManager == null)
{
throw new ArgumentNullException("retryManager");
}
return(new RetryPolicy(new OracleDatabaseTransientErrorDetectionStrategy(), retryManager.GetDefaultOracleConnectionRetryStrategy()));
}
/// <summary>
/// Sets the specified retry manager as the default retry manager.
/// </summary>
/// <param name="retryManager">The retry manager.</param>
/// <param name="throwIfSet">true to throw an exception if the manager is already set; otherwise, false. Defaults to <see langword="true"/>.</param>
/// <exception cref="InvalidOperationException">The singleton is already set and <paramref name="throwIfSet"/> is true.</exception>
public static void SetDefault(RetryManager retryManager, bool throwIfSet = true)
{
if (s_defaultRetryManager != null && throwIfSet && retryManager != s_defaultRetryManager)
{
throw new InvalidOperationException(Resources.ExceptionRetryManagerAlreadySet);
}
s_defaultRetryManager = retryManager;
}
static RetryPolicyFactory()
{
var strategy = new FixedInterval("fixed", 10, TimeSpan.FromSeconds(3));
var strategies = new List <RetryStrategy> {
strategy
};
var manager = new RetryManager(strategies, "fixed");
RetryManager.SetDefault(manager);
}
/// <summary>
/// Initialize the Sql Azure settings and connections
/// </summary>
public void InitializeSqlAzure()
{
this.SqlConnectionString = ConfigurationManager.AppSettings["SqlAzureConnectionString"];
if (String.IsNullOrWhiteSpace(this.SqlConnectionString))
{
throw new ArgumentException("A required AppSetting cannot be null or empty", "SqlAzureConnectionString");
}
this.SqlTableName = ConfigurationManager.AppSettings["SqlAzureTableName"];
if (String.IsNullOrWhiteSpace(this.SqlTableName))
{
throw new ArgumentException("A required AppSetting cannot be null or empty", "SqlAzureTableName");
}
var columns = ConfigurationManager.AppSettings["SqlAzureTableColumns"];
if (String.IsNullOrWhiteSpace(columns))
{
throw new ArgumentException("A required AppSetting cannot be null or empty", "SqlAzureTableColumns");
}
this.SqlTableColumns = columns.Split(new char[] { ',', ';' }, StringSplitOptions.RemoveEmptyEntries).Select(c => c.Trim()).ToList();
//Reference: https://msdn.microsoft.com/en-us/library/azure/dn864744.aspx
//1. Define an Exponential Backoff retry strategy for Azure SQL Database throttling (ExponentialBackoff Class). An exponential back-off strategy will gracefully back off the load on the service.
int retryCount = 4;
int minBackoffDelayMilliseconds = 2000;
int maxBackoffDelayMilliseconds = 8000;
int deltaBackoffMilliseconds = 2000;
ExponentialBackoff exponentialBackoffStrategy =
new ExponentialBackoff("exponentialBackoffStrategy",
retryCount,
TimeSpan.FromMilliseconds(minBackoffDelayMilliseconds),
TimeSpan.FromMilliseconds(maxBackoffDelayMilliseconds),
TimeSpan.FromMilliseconds(deltaBackoffMilliseconds));
//2. Set a default strategy to Exponential Backoff.
RetryManager manager = new RetryManager(
new List <RetryStrategy>
{
exponentialBackoffStrategy
},
"exponentialBackoffStrategy");
//3. Set a default Retry Manager. A RetryManager provides retry functionality, or if you are using declarative configuration, you can invoke the RetryPolicyFactory.CreateDefault
RetryManager.SetDefault(manager);
//4. Define a default SQL Connection retry policy and SQL Command retry policy. A policy provides a retry mechanism for unreliable actions and transient conditions.
ConnectionRetryPolicy = manager.GetDefaultSqlConnectionRetryPolicy();
CommandRetryPolicy = manager.GetDefaultSqlCommandRetryPolicy();
//5. Create a function that will retry the connection using a ReliableSqlConnection.
InitializeSqlAzureConnection();
}
static void RetryTest()
{
int count = 0;
Action action = () =>
{
count++;
throw new Exception("123");
};
RetryManager.AutoRetry(action);
}
public override HistoryMemento OnExecute(IHistoryWorkspace historyWorkspace)
{
GeometryList cachedClippingMask = historyWorkspace.Selection.GetCachedClippingMask();
if (historyWorkspace.Selection.IsEmpty || (cachedClippingMask.Bounds.Area < 1.0))
{
return(null);
}
Document document = historyWorkspace.Document;
List <HistoryMemento> mementos = new List <HistoryMemento>(document.Layers.Count);
RectInt32 b = cachedClippingMask.Bounds.GetInt32Bound(1E-05);
RectInt32 sourceRect = RectInt32.Intersect(document.Bounds(), b);
Document document2 = new Document(sourceRect.Width, sourceRect.Height);
document2.ReplaceMetadataFrom(document);
RectInt32 rect = new RectInt32(0, 0, sourceRect.Width, sourceRect.Height);
IRenderer <ColorAlpha8> cachedClippingMaskRenderer = historyWorkspace.Selection.GetCachedClippingMaskRenderer(historyWorkspace.ToolSettings.Selection.RenderingQuality.Value);
IRenderer <ColorAlpha8> newClipMaskRenderer = new ClippedRenderer <ColorAlpha8>(cachedClippingMaskRenderer, sourceRect);
SelectionHistoryMemento item = new SelectionHistoryMemento(null, null, historyWorkspace);
mementos.Add(item);
base.EnterCriticalRegion();
int count = document.Layers.Count;
while (document.Layers.Count > 0)
{
BitmapLayer layer = (BitmapLayer)document.Layers[0];
Surface croppedSurface = layer.Surface.CreateWindow(sourceRect);
BitmapLayer newLayer = RetryManager.RunMemorySensitiveOperation <BitmapLayer>(() => new BitmapLayer(croppedSurface));
newLayer.LoadProperties(layer.SaveProperties());
HistoryMemento deleteLayerMemento = new DeleteLayerFunction(0).Execute(historyWorkspace);
mementos.Add(deleteLayerMemento);
Task task = Task.Factory.StartNew(delegate {
deleteLayerMemento.Flush();
}, TaskCreationOptions.LongRunning);
Parallel.ForEach <RectInt32>(rect.GetTiles(TilingStrategy.Tiles, 7), delegate(RectInt32 newTileRect) {
ISurface <ColorBgra> surface = newLayer.Surface.CreateWindow(newTileRect);
IRenderer <ColorAlpha8> mask = new ClippedRenderer <ColorAlpha8>(newClipMaskRenderer, newTileRect);
surface.MultiplyAlphaChannel(mask);
});
document2.Layers.Add(newLayer);
task.Wait();
if (document2.Layers.Count > count)
{
ExceptionUtil.ThrowInternalErrorException("newDocument.Layers.Count > oldLayerCount");
}
}
ReplaceDocumentHistoryMemento memento2 = new ReplaceDocumentHistoryMemento(null, null, historyWorkspace);
mementos.Add(memento2);
historyWorkspace.Document = document2;
return(HistoryMemento.Combine(HistoryMementoName, HistoryMementoImage, mementos));
}
public static void LoadConfigSqlRetry()
{
if (gbInitialized)
{
return;
}
lock (goLock)
{
if (gbInitialized)
{
return;
}
int connRetries = 3;
TimeSpan connMinBackoff = TimeSpan.FromSeconds(5);
TimeSpan connMaxBackoff = TimeSpan.FromSeconds(10);
TimeSpan connDeltaBackoff = TimeSpan.FromSeconds(2);
int commRetries = 3;
TimeSpan commMinBackoff = TimeSpan.FromSeconds(5);
TimeSpan commMaxBackoff = TimeSpan.FromSeconds(10);
TimeSpan commDeltaBackoff = TimeSpan.FromSeconds(2);
RetryStrategy retryStrategyConnection = new ExponentialBackoff(
ConnectionStrategyName,
connRetries,
connMinBackoff,
connMaxBackoff,
connDeltaBackoff);
RetryStrategy retryStrategyCommand = new ExponentialBackoff(
CommandStrategyName,
commRetries,
commMinBackoff,
commMaxBackoff,
commDeltaBackoff);
var dictApplications = new Dictionary <string, string>
{
{ RetryManagerSqlExtensions.DefaultStrategyConnectionTechnologyName, retryStrategyConnection.Name },
{ RetryManagerSqlExtensions.DefaultStrategyCommandTechnologyName, retryStrategyCommand.Name }
};
var retryManager = new RetryManager(
new[] { retryStrategyConnection, retryStrategyCommand },
retryStrategyCommand.Name,
dictApplications);
RetryManager.SetDefault(retryManager, false);
gbInitialized = true;
}
}
private static void InitializeRetryPolicies()
{
if (RetryManager == null)
{
RetryManager = EnterpriseLibraryContainer.Current.GetInstance <RetryManager>();
}
if (StorageRetryPolicy == null)
{
StorageRetryPolicy = RetryManager.GetDefaultAzureStorageRetryPolicy();
}
}
public override HistoryMemento OnExecute(IHistoryWorkspace historyWorkspace)
{
BitmapLayer layer = RetryManager.RunMemorySensitiveOperation <BitmapLayer>(() => new BitmapLayer(historyWorkspace.Document.Width, historyWorkspace.Document.Height));
string format = PdnResources.GetString("AddNewBlankLayer.LayerName.Format");
layer.Name = string.Format(format, (1 + historyWorkspace.Document.Layers.Count).ToString());
int layerIndex = historyWorkspace.ActiveLayerIndex + 1;
NewLayerHistoryMemento memento = new NewLayerHistoryMemento(PdnResources.GetString("AddNewBlankLayer.HistoryMementoName"), PdnResources.GetImageResource("Icons.MenuLayersAddNewLayerIcon.png"), historyWorkspace, layerIndex);
base.EnterCriticalRegion();
historyWorkspace.Document.Layers.Insert(layerIndex, layer);
return(memento);
}
/// <summary>
/// Resolve the session node from the context with infinite retries
/// </summary>
/// <returns>The resolved session node name</returns>
private async Task <string> ResolveSessionNodeWithRetries()
{
RetryManager retry = SoaHelper.GetDefaultInfinitePeriodRertyManager();
return(await RetryHelper <string> .InvokeOperationAsync(
async() => await this.context.ResolveSessionLauncherNodeAsync(),
async (e, r) =>
{
TraceHelper.TraceWarning("0", "[SchedulerHelper] Failed to ResolveSessionLauncherNodeAsync: {0}\nRetryCount = {1}", e, r.RetryCount);
await Task.CompletedTask;
},
retry));
}
public void ExecuteAsync_Action_ForceThrowException()
{
try
{
var retryPolicy = new Mock<IRetryPolicy>();
retryPolicy.Setup(policy => policy.ShouldRetryAfter(It.IsAny<Exception>())).Returns(false);
var localRetryManager = new RetryManager(retryPolicy.Object);
localRetryManager.ExecuteAsync((Action)(() => { throw new Exception(); }), CancellationToken.None, (attempt, nextDelay) => { }, this.executionPolicy).Wait();
}
catch (Exception)
{
Assert.AreEqual(0, this.executionPolicy.CurrentAttempt);
throw;
}
}
static void Main(string[] args)
{
var bus = new Bus(new Dispatcher.Dispatcher());
var printers = new[] { new Printer(bus, 1), new Printer(bus, 2), new Printer(bus, 3), new Printer(bus, 4) };
var printerPool = printers
.Select(printer => new WideningHandler<PrintJob, Message>(printer))
.Select(printer => new QueuedHandler(printer, bus) { MaxQueueLength = 1 })
.ToArray();
var refillPool = printers
.Select(printer => new WideningHandler<RefillPaper, Message>(printer))
.Select(printer => new QueuedHandler(printer, bus) { MaxQueueLength = 1 })
.ToArray();
foreach (var printer in refillPool)
{
bus.Subscribe<RefillPaper>(new NarrowingHandler<RefillPaper, Message>(printer));
// subscribe the printer directly to RefillPaper as we don't want to distribute that with the print jobs
}
var office = Enumerable.Range(0, 50)
.Select(i => new Employee(bus, i))
.ToArray();
var loadBalancer = new RoundRobinLoadBalancer(printerPool);
var printerRetryHandler = new RetryHandler(loadBalancer, bus);
var retryManager = new RetryManager(bus);
var timerService = new TimerService(bus);
bus.Subscribe<FutureMessage>(timerService);
bus.Subscribe<RetryMessage>(retryManager);
bus.Subscribe<SuccessMessage>(retryManager);
bus.Subscribe(new NarrowingHandler<PrintJob, Message>(printerRetryHandler));
var console = new QueuedHandler(new WideningHandler<LogMessage, Message>(new ConsoleHandler()), bus);
bus.Subscribe<LogMessage>(new NarrowingHandler<LogMessage, Message>(console));
var porter = new Porter(bus);
bus.Subscribe(porter);
var converter = new LogConverter(bus);
bus.Subscribe<PrintJob>(converter);
bus.Subscribe<OutOfPaper>(converter);
bus.Subscribe<PagePrinted>(converter);
bus.Subscribe<RetryMessage>(converter);
}
public MainWindow()
{
InitializeComponent();
concertWorker.DoWork += concertWorker_DoWork;
concertWorker.RunWorkerCompleted += concertWorker_RunWorkerCompleted;
concertWorker.ProgressChanged += worker_ProgressChanged;
levelWorker.DoWork += levelWorker_DoWork;
levelWorker.RunWorkerCompleted += levelWorker_RunWorkerCompleted;
levelWorker.ProgressChanged += worker_ProgressChanged;
customerWorker.DoWork += customerWorker_DoWork;
customerWorker.RunWorkerCompleted += customerWorker_RunWorkerCompleted;
customerWorker.ProgressChanged += worker_ProgressChanged;
purchaseWorker.DoWork += purchaseWorker_DoWork;
purchaseWorker.RunWorkerCompleted += purchaseWorker_RunWorkerCompleted;
purchaseWorker.ProgressChanged += worker_ProgressChanged;
RetryManager manager = new RetryManager(new List<RetryStrategy> { exponentialBackoffStrategy }, "exponentialBackoffStrategy");
RetryManager.SetDefault(manager);
ticketsPurchasedCounter = new TicketsPurchasedCounter(0);
}
protected override void Arrange()
{
this.defaultStrategy = new FixedInterval("default", 5, TimeSpan.FromMilliseconds(10));
this.otherStrategy = new Incremental("other", 5, TimeSpan.FromMilliseconds(10), TimeSpan.FromMilliseconds(10));
this.defaultSqlConnectionStrategy = new FixedInterval("defaultSqlConnection", 5, TimeSpan.FromMilliseconds(10));
this.defaultSqlCommandStrategy = new FixedInterval("defaultSqlCommand", 5, TimeSpan.FromMilliseconds(10));
this.defaultAzureServiceBusStrategy = new FixedInterval("defaultAzureServiceBusStrategy", 5, TimeSpan.FromMilliseconds(10));
this.defaultAzureCachingStrategy = new FixedInterval("defaultAzureCachingStrategy", 5, TimeSpan.FromMilliseconds(10));
this.defaultAzureStorageStrategy = new FixedInterval("defaultAzureStorageStrategy", 5, TimeSpan.FromMilliseconds(10));
this.managerWithAllDefaults = new RetryManager(
new[]
{
this.defaultStrategy,
this.defaultSqlConnectionStrategy,
this.defaultSqlCommandStrategy,
this.otherStrategy,
this.defaultAzureServiceBusStrategy,
this.defaultAzureCachingStrategy, this.defaultAzureStorageStrategy
},
"default",
new Dictionary<string, string>
{
{ "SQL", "defaultSqlCommand" },
{ "SQLConnection", "defaultSqlConnection" },
{ "ServiceBus", "defaultAzureServiceBusStrategy" },
{ "Caching", "defaultAzureCachingStrategy" },
{ "WindowsAzure.Storage", "defaultAzureStorageStrategy" },
});
this.managerWithOnlyDefault = new RetryManager(
new[]
{
this.defaultStrategy,
this.defaultSqlConnectionStrategy,
this.defaultSqlCommandStrategy,
this.otherStrategy,
this.defaultAzureServiceBusStrategy,
this.defaultAzureCachingStrategy, this.defaultAzureStorageStrategy
},
"default");
}
/// <summary>
/// Initialize the Sql Azure settings and connections
/// </summary>
public void InitializeSqlAzure()
{
this.SqlConnectionString = ConfigurationManager.AppSettings["SqlAzureConnectionString"];
if(String.IsNullOrWhiteSpace(this.SqlConnectionString))
{
throw new ArgumentException("A required AppSetting cannot be null or empty", "SqlAzureConnectionString");
}
this.SqlTableName = ConfigurationManager.AppSettings["SqlAzureTableName"];
if (String.IsNullOrWhiteSpace(this.SqlTableName))
{
throw new ArgumentException("A required AppSetting cannot be null or empty", "SqlAzureTableName");
}
var columns = ConfigurationManager.AppSettings["SqlAzureTableColumns"];
if (String.IsNullOrWhiteSpace(columns))
{
throw new ArgumentException("A required AppSetting cannot be null or empty", "SqlAzureTableColumns");
}
this.SqlTableColumns = columns.Split(new char[] { ',', ';' }, StringSplitOptions.RemoveEmptyEntries).Select(c => c.Trim()).ToList();
//Reference: https://msdn.microsoft.com/en-us/library/azure/dn864744.aspx
//1. Define an Exponential Backoff retry strategy for Azure SQL Database throttling (ExponentialBackoff Class). An exponential back-off strategy will gracefully back off the load on the service.
int retryCount = 4;
int minBackoffDelayMilliseconds = 2000;
int maxBackoffDelayMilliseconds = 8000;
int deltaBackoffMilliseconds = 2000;
ExponentialBackoff exponentialBackoffStrategy =
new ExponentialBackoff("exponentialBackoffStrategy",
retryCount,
TimeSpan.FromMilliseconds(minBackoffDelayMilliseconds),
TimeSpan.FromMilliseconds(maxBackoffDelayMilliseconds),
TimeSpan.FromMilliseconds(deltaBackoffMilliseconds));
//2. Set a default strategy to Exponential Backoff.
RetryManager manager = new RetryManager(
new List<RetryStrategy>
{
exponentialBackoffStrategy
},
"exponentialBackoffStrategy");
//3. Set a default Retry Manager. A RetryManager provides retry functionality, or if you are using declarative configuration, you can invoke the RetryPolicyFactory.CreateDefault
RetryManager.SetDefault(manager);
//4. Define a default SQL Connection retry policy and SQL Command retry policy. A policy provides a retry mechanism for unreliable actions and transient conditions.
ConnectionRetryPolicy = manager.GetDefaultSqlConnectionRetryPolicy();
CommandRetryPolicy = manager.GetDefaultSqlCommandRetryPolicy();
//5. Create a function that will retry the connection using a ReliableSqlConnection.
InitializeSqlAzureConnection();
}
protected override void Act()
{
retryManager = settings.BuildRetryManager();
}
