azurefunction error

Question

Hi,
I am creating a azurefunction ( <AzureFunctionsVersion>v3</AzureFunctionsVersion>),
my requirement is to read data from topic and saved into cosmoDB,
when I am trying to add (IAsyncCollector<Rawmessage> cosmodbCollector)this cosmodb collector,
it giving below error on local,

Microsoft.Azure.WebJobs.Host: Error indexing method 'Function1'. Microsoft.Azure.WebJobs.Host: Cannot bind parameter 'cosmodbCollector' to type IAsyncCollector`1. Make sure the parameter Type is supported by the binding. If you're using binding extensions (e.g. Azure Storage, ServiceBus, Timers, etc.) make sure you've called the registration method for the extension(s) in your startup code (e.g. builder.AddAzureStorage(), builder.AddServiceBus(), builder.AddTimers(), etc.).

please help

Answer 1

Can you share the code please? From the code you have shared, hard to say what it is. But about the error message, make sure you have the latest required NuGet packages installed.

From your question, what it sounds like is you need to have an Azure Service Bus triggered function and an Output binding for Cosmos DB.

You can read through the following for very detailed steps.

Azure Service Bus trigger for Azure Functions
Azure Cosmos DB output binding for Azure Functions 2.x and higher

Answer 2

Hi ,
Please find my code below,
when I am trying to run this on local then it giving below error message on the console,

[FunctionName("Function1")]
public async Task Run([ServiceBusTrigger("%AuditScanTopic%","%AuditSubscriptionName%",
Connection = "AuditConnectionString")]Message enqueueMessage, MessageReceiver messageReceiver,
string lockToken, IAsyncCollector<Rawmessage> cosmodbCollector,
ILogger log)
{
log.LogInformation($"C# ServiceBus topic trigger function processed message: {lockToken}");
await messageReceiver.CompleteAsync(lockToken);

    }

this is NuGet package reference,
<ItemGroup>
<PackageReference Include="Azure.Messaging.ServiceBus" Version="7.2.1" />
<PackageReference Include="Microsoft.Azure.Cosmos.Table" Version="1.0.8" />
<PackageReference Include="Microsoft.Azure.Functions.Extensions" Version="1.1.0" />
<PackageReference Include="Microsoft.Azure.WebJobs.Extensions.CosmosDB" Version="3.0.10" />
<PackageReference Include="Microsoft.Azure.WebJobs.Extensions.ServiceBus" Version="4.3.0" />
<PackageReference Include="Microsoft.Azure.WebJobs.Extensions.Storage" Version="4.0.4" />
<PackageReference Include="Microsoft.NET.Sdk.Functions" Version="3.0.11" />
<PackageReference Include="WindowsAzure.Storage" Version="9.3.3" />
</ItemGroup>

error message-
Microsoft.Azure.WebJobs.Host: Error indexing method 'Function1'. Microsoft.Azure.WebJobs.Host: Cannot bind parameter 'cosmodbCollector' to type IAsyncCollector`1. Make sure the parameter Type is supported by the binding. If you're using binding extensions (e.g. Azure Storage, ServiceBus, Timers, etc.) make sure you've called the registration method for the extension(s) in your startup code (e.g. builder.AddAzureStorage(), builder.AddServiceBus(), builder.AddTimers(), etc.).

Please suggest.