Tuesday, October 4, 2016

Orleans error: Orleans.Storage.BadProviderConfigException: No storage providers found loading grain type

Next step in my journey into Orleans land, was using ‘Declarative Persistence’. Sometimes you want the state inside your actors(grains in Orleans terminology) being persisted in some kind of permanent storage, so that it can survive a silo shutdown. Orleans provides a simple declarative model that makes this possible.

Unfortunately while following the related tutorial, I got the following error message:

[2016-10-04 07:19:17.848 GMT    11      ERROR   103104  Catalog 127.0.0.1:11111]        !!!!!!!!!! No storage providers found loading grain type Grains1.Manager

No storage providers found loading grain type Grains1.Manager

Exception = Orleans.Storage.BadProviderConfigException: No storage providers found loading grain type Grains1.Manager

   at Orleans.Runtime.Catalog.SetupStorageProvider(ActivationData data)

   at Orleans.Runtime.Catalog.CreateGrainInstance(String grainTypeName, ActivationData data, String genericArguments)

   at Orleans.Runtime.Catalog.SetupActivationInstance(ActivationData result, String grainType, String genericInterface)

   at Orleans.Runtime.Catalog.GetOrCreateActivation(ActivationAddress address, Boolean newPlacement, String grainType, String genericArguments, Dictionary`2 requestContextData, Task& activatedPromise)

   at Orleans.Runtime.Dispatcher.ReceiveMessage(Message message)

[2016-10-04 07:19:17.853 GMT    11      ERROR   101540  Dispatcher      127.0.0.1:11111]        !!!!!!!!!! Error creating activation for Grains1.Manager. Message NewPlacement Request S127.0.0.1:11111:213261543*cli/893aa39f@4423baaf->S127.0.0.1:11111:213261543*grn/913DAEDD/af761896@76d92c9c #4: global::GrainInterfaces1.IManager:AsEmployee()

Exc level 0: Orleans.Storage.BadProviderConfigException: No storage providers found loading grain type Grains1.Manager

   at Orleans.Runtime.Catalog.SetupStorageProvider(ActivationData data)

   at Orleans.Runtime.Catalog.CreateGrainInstance(String grainTypeName, ActivationData data, String genericArguments)

   at Orleans.Runtime.Catalog.SetupActivationInstance(ActivationData result, String grainType, String genericInterface)

   at Orleans.Runtime.Catalog.GetOrCreateActivation(ActivationAddress address, Boolean newPlacement, String grainType, String genericArguments, Dictionary`2 requestContextData, Task& activatedPromise)

   at Orleans.Runtime.Dispatcher.ReceiveMessage(Message message)

What I was missing were the following lines inside my orleansconfiguration.xml:

<OrleansConfiguration xmlns="urn:orleans">
  <Globals>
    <SeedNode Address="localhost" Port="11111" />
    <StorageProviders>
      <Provider Name="AzureStore" Type="Orleans.Storage.AzureTableStorage" DataConnectionString="UseDevelopmentStorage=true"/>
    </StorageProviders>

  </Globals>
  <Defaults>
    <Networking Address="localhost" Port="11111" />
    <ProxyingGateway Address="localhost" Port="30000" />
  </Defaults>
</OrleansConfiguration>

On my grains I had the following attribute added:

[StorageProvider(ProviderName = "AzureStore")]
public class Employee : Grain<EmployeeState>, IEmployee
{

No comments: