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Client API and custom process step

Hi everybody,

I am developing small application which uses Neuron. It's job is to send messages using Client API. It works great, up to the moment when I add Process to the publishing party which I use in my application. The process uses Custom Process Step. I'm getting two kinds of errors:

1) When I fire tests against my application (using NUnit) I get:

Sending message to 'TestSubscriber'
System.Runtime.Serialization.SerializationException : Error in line 1 position 490. Element 'http://schemas.neuronesb.com/pipelines/:ESBMessagePipelineStep' contains data from a type that maps to the name 'http://schemas.datacontract.org/2004/07/IntegrationPlatform.Neuron.Logging:MessageLoggingProcessStep'. The deserializer has no knowledge of any type that maps to this name. Consider using a DataContractResolver or add the type corresponding to 'MessageLoggingProcessStep' to the list of known types - for example, by using the KnownTypeAttribute attribute or by adding it to the list of known types passed to DataContractSerializer.
at System.Runtime.Serialization.XmlObjectSerializerReadContext.InternalDeserialize(XmlReaderDelegator reader, String name, String ns, Type declaredType, ref DataContract dataContract)
at System.Runtime.Serialization.XmlObjectSerializerReadContext.InternalDeserialize(XmlReaderDelegator xmlReader, Int32 id, RuntimeTypeHandle declaredTypeHandle, String name, String ns)
at ReadPipelineStepCollectionOfESBMessagexAPWb1W4FromXml(XmlReaderDelegator, XmlObjectSerializerReadContext, XmlDictionaryString, XmlDictionaryString, CollectionDataContract)
at System.Runtime.Serialization.CollectionDataContract.ReadXmlValue(XmlReaderDelegator xmlReader, XmlObjectSerializerReadContext context)
at System.Runtime.Serialization.XmlObjectSerializerReadContext.InternalDeserialize(XmlReaderDelegator reader, String name, String ns, Type declaredType, ref DataContract dataContract)
at System.Runtime.Serialization.XmlObjectSerializerReadContext.InternalDeserialize(XmlReaderDelegator xmlReader, Int32 id, RuntimeTypeHandle declaredTypeHandle, String name, String ns)
at ReadESBMessagePipelineFromXml(XmlReaderDelegator, XmlObjectSerializerReadContext, XmlDictionaryString[], XmlDictionaryString[])
at System.Runtime.Serialization.ClassDataContract.ReadXmlValue(XmlReaderDelegator xmlReader, XmlObjectSerializerReadContext context)
at System.Runtime.Serialization.XmlObjectSerializerReadContext.InternalDeserialize(XmlReaderDelegator reader, String name, String ns, Type declaredType, ref DataContract dataContract)
at System.Runtime.Serialization.XmlObjectSerializerReadContext.InternalDeserialize(XmlReaderDelegator xmlReader, Type declaredType, DataContract dataContract, String name, String ns)
at System.Runtime.Serialization.DataContractSerializer.InternalReadObject(XmlReaderDelegator xmlReader, Boolean verifyObjectName, DataContractResolver dataContractResolver)
at System.Runtime.Serialization.XmlObjectSerializer.ReadObjectHandleExceptions(XmlReaderDelegator reader, Boolean verifyObjectName, DataContractResolver dataContractResolver)
at Neuron.Esb.Administration.ESBMessagePipelineBlobConverter.FromXmlString(String blob)
at Neuron.Esb.Administration.ClientPipelineItem.get_ThePipeline()
at Neuron.Esb.Internal.PipelineRuntimeHelper.ApplyPipelines(ESBClientContext context, ref ESBMessage message, Boolean applyOnPublish, Boolean applyOnReceive)
at Neuron.Esb.Internal.PipelineRuntimeHelper.ApplyPublishPipelines(ESBClientContext context, ref ESBMessage message)
at Neuron.Esb.Party.SendMessage(ESBMessage message, Boolean duplicateMessage)
at IntegrationPlatform.Neuron....

2) When I run this application normally I get:
Unhandled Exception: System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions p
roperty for more information.
at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module)
at System.Reflection.RuntimeModule.GetTypes()
at System.Reflection.Assembly.GetTypes()
at Neuron.Configuration.AssemblyRegistration.GetTypes()
at Neuron.Configuration.TypeRegistrationGroup.GetTypes()
at Neuron.Configuration.TypeRegistrationGroups.GetRegistrations(String name)
at Neuron.Esb.Administration.ESBMessagePipelineBlobConverter.GetKnownTypes()
at Neuron.Esb.Administration.ESBMessagePipelineBlobConverter.FromXmlString(String blob)
at Neuron.Esb.Administration.ClientPipelineItem.get_ThePipeline()
at Neuron.Esb.Internal.PipelineRuntimeHelper.ApplyPipelines(ESBClientContext context, ESBMessage& message, Boolean applyOnPublish, Boolean applyOnR
eceive)
at Neuron.Esb.Internal.PipelineRuntimeHelper.ApplyPublishPipelines(ESBClientContext context, ESBMessage& message)
at Neuron.Esb.Party.SendMessage(ESBMessage message, Boolean duplicateMessage)
at Neuron.Esb.Party.SendMessage(ESBMessage message, SendOptions options, String targetId, String action, String schema)
at IntegrationPlatform.Neuron....

Any ideas what may be wrong?
I'm using NeuronESB 3.1.0.390.
Thanks for help,
Michał

P.S. I'm developing using Neuron for 2 months now and I think it is a really great product! Good job!

Tags: ClientAPI, custom, process, step

Views: 520

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Replies to This Discussion

Permalink Reply by Michał Staszewski on November 21, 2014 at 5:24am

Hi,

I think I managed to resolve my problems.

In first exception, the reason was version mismatch for Newtonsoft.Json library. Resolving it led to 2) exception.

Resolution for 2) is to define CustomProcessSteps in app.config (or whatever the config file of application is) the same way as in neuronpipelines.config, that is:

  <neuron.pipelines>
    <stepTypes>
      <add name="CustomProcessStepNam" value="AssemblyName" />
    </stepTypes>
  </neuron.pipelines>

Don't forget to add config section definition:

<configSections>
    <section name="neuron.pipelines" type="Neuron.Configuration.PipelinesConfigurationSection, Neuron"/>
</configSections>

Remember also, that your tests are running under different process, so they have separate config file ;)

I hope this will help somebody ;)

Greetings,

Michał

Permalink Reply by Joe Klug on November 21, 2014 at 5:29am

Michal - when you use any custom or third party assemblies with the Client API, those components also need to be deployed to the same location where the application hosting the Client API resides.  So if your executable is at c:\MyClientAPIApp, and the core Neuron assemblies are there (Neuron.dll, Neuron.Esb.dll,  etc.), then the custom process assemblies also need to be there.  There's one final step - the custom process step needs to be registered in the hosting applications config file. You probably already put the appSettings or the Neuron ESB Server in there.  Here's a sample:

<?xml version="1.0"?>

<configuration>

  <configSections>

    <section name="neuron.pipelines" type="Neuron.Configuration.PipelinesConfigurationSection, Neuron"/>

  </configSections>

 

  <appSettings>

    <add key="esbZone" value="Enterprise"/>

    <add key="esbClientId" value="TestPub"/>

    <add key="esbServiceAddress" value="net.tcp://localhost:50000"/>

    <add key="esbServiceIdentity" value=""/>

  </appSettings>

  <system.diagnostics>

    <switches>

      <!-- This switch controls ESB trace messages. -->

      <!-- Value  Meaning -->

      <!-- =====  ======= -->

      <!--   0    No tracing -->

      <!--   1    Trace errors -->

      <!--   2    Trace errors + warnings -->

      <!--   3    Trace errors + warnings + info -->

      <!--   4    Trace errors + warnings + info + verbose -->

      <add name="esbTraceSwitch" value="2" />

    </switches>

    <trace autoflush="true" indentsize="0" />

  </system.diagnostics>

  <neuron.pipelines>

    <stepTypes>

      <!--add name="MyCustomPipelineStep" value="Neuron.Pipelines.CustomSamples, Version=1.0.0.0, Culture=neutral, PublicKeyToken=ecaf0c45d7be0e34"/-->

    </stepTypes>

  </neuron.pipelines>

</configuration>

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