{"Can't find config file":null} {Name = "ConfigFile" FullName = "System.Data.Fabric.Common.ConfigFile"}

Question

I have an unit test with following code. There's an Exception of "Can't find config file", whenever I create an instance of DataCacheFactory. All my configurations are put in code directly, and there's no config file for test project.

When I view detail for the exception, I can find DeclaringType with value of {Name = "ConfigFile" FullName = "System.Data.Fabric.Common.ConfigFile"}.

Call Stack:-
--
FabricCommon.dll!System.Data.Fabric.Common.ConfigFile.Load() + 0x131 bytes 
FabricCommon.dll!System.Data.Fabric.Common.ConfigFile.Config.get() + 0xc0 bytes 
FabricCommon.dll!System.Data.Fabric.Common.EventLogWriter.LoadSinkFromConfig() + 0x24 bytes 
FabricCommon.dll!System.Data.Fabric.Common.EventLogWriter.EventLogWriter() + 0x18 bytes 
[Native to Managed Transition] 
[Managed to Native Transition] 
ClientLibrary.dll!Microsoft.Data.Caching.DataCacheFactory.DataCacheFactory(Microsoft.Data.Caching.DataCacheServerEndpoint[] servers = {Microsoft.Data.Caching.DataCacheServerEndpoint[3]}, bool routingClient = true, bool localCache = false, Microsoft.Data.Caching.DataCacheLocalCacheSyncPolicy syncPolicy = NotificationBased, int localCacheTimeout = 300, int pollInterval = 300) + 0x151 bytes 

My Code:-
--

[

TestMethod()]

 

public void PutObjectInNutShell()

{

 

Guid id = Guid.NewGuid();

 

Random r = new Random();

 

int obj = r.Next();

 

DataCacheServerEndpoint[] servers = new DataCacheServerEndpoint[3];

servers[0] =

new DataCacheServerEndpoint("10.222.100.151", 22233, "DistributedCacheService");

servers[1] =

new DataCacheServerEndpoint("10.222.100.152", 22233, "DistributedCacheService");

servers[2] =

new DataCacheServerEndpoint("10.222.100.153", 22233, "DistributedCacheService");

 

DataCacheFactory cacheFactory = new DataCacheFactory(servers, true, false, DataCacheLocalCacheSyncPolicy.NotificationBased, 300, 300);

 

// get cache client for cache "FirstCache"

 

DataCache _DC = cacheFactory.GetCache("VelocityCache");

_DC.Put(id.ToString(), obj);

}

Thanks a lot!

Answer 1

Hi, does this come as an unhandled exception? This exception is actually internal to Velocity and is caught internally.

---

Amit. (Velocity Dev, MSFT)

Answer 2

It's indeed handled by Velocity internally, but still give me quite a shock. Isn't it not a good practice in C# to throw an exception, and then swallow it later?

Answer 3

An exception normally means something bad has happened. It can be thrown and caught in code for various reasons:

1.       It is only done in error scenarios so won’t be a perf hit for normal cases.

2.       To maintain layering/stack of components.

3.       Easier understandability.

Hence it is not bad to follow this approach. Does it make sense to you?

---

Amit. (Velocity Dev, MSFT)

Answer 4

Hi All,

Getting the same error when using AppFabric 1.1. 

However this is handled by MS internal exception.

The question is: is something wrong with the cache client or server configurations ?

Following is the DebugDiag 1.2 stack trace fragment

Microsoft.Fabric.Common.ConfigFile.Load()

Microsoft.Fabric.Common.ConfigFile.get_Config()

Microsoft.Fabric.Common.EventLogWriter.LoadSinkFromConfig()

Microsoft.Fabric.Common.EventLogWriter..cctor()

Microsoft.Fabric.Common.EventLogWriter.AddSink(Microsoft.Fabric.Common.IEventSink, Int32)

Microsoft.ApplicationServer.Caching.DataCacheClientLogManager.Initialize(Microsoft.ApplicationServer.Caching.DataCacheLogSink)

Microsoft.ApplicationServer.Caching.DataCacheFactoryConfiguration.Initialize(System.String)

MyTest.Init() [C:\Test\MyTestCache.cs @ 95]

 

Thanks in advance,

Evgeny 

---

EvgenyV