I'm having trouble getting this combination working, even in a hello world function. I want a function which consumes a table and blob, but not as triggers (trigger is timer).

When I run the function app locally I'm getting

Microsoft.Azure.WebJobs.Host: Error indexing method 'Function1'. Microsoft.Azure.WebJobs.Host: Can't bind Blob to type 'Microsoft.WindowsAzure.Storage.Blob.CloudBlobContainer'.
Possible causes:
 1) Tried binding to 'Azure.Storage.Blobs.BlobContainerClient, Azure.Storage.Blobs, Version=12.10.0.0, Culture=neutral, PublicKeyToken=92742159e12e44c8' but user type assembly was 'Microsoft.WindowsAzure.Storage.Blob.CloudBlobContainer, Microsoft.WindowsAzure.Storage, Version=9.3.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35.
 2) Tried binding to 'Microsoft.Azure.WebJobs.Extensions.Storage.Blobs.Config.BlobsExtensionConfigProvider MultiBlobContext, Microsoft.Azure.WebJobs.Extensions.Storage.Blobs, Version=5.0.0.0, Culture=neutral, PublicKeyToken=92742159e12e44c8' but user type assembly was 'Microsoft.WindowsAzure.Storage.Blob.CloudBlobContainer, Microsoft.WindowsAzure.Storage, Version=9.3.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35.
 3) Tried binding to 'System.IO.Stream, System.Private.CoreLib, Version=6.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e' but user type assembly was 'Microsoft.WindowsAzure.Storage.Blob.CloudBlobContainer, Microsoft.WindowsAzure.Storage, Version=9.3.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35.
 4) Tried binding to 'Azure.Storage.Blobs.Specialized.BlockBlobClient, Azure.Storage.Blobs, Version=12.10.0.0, Culture=neutral, PublicKeyToken=92742159e12e44c8' but user type assembly was 'Microsoft.WindowsAzure.Storage.Blob.CloudBlobContainer, Microsoft.WindowsAzure.Storage, Version=9.3.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35.
 5) Tried binding to 'Azure.Storage.Blobs.Specialized.PageBlobClient, Azure.Storage.Blobs, Version=12.10.0.0, Culture=neutral, PublicKeyToken=92742159e12e44c8' but user type assembly was 'Microsoft.WindowsAzure.Storage.Blob.CloudBlobContainer, Microsoft.WindowsAzure.Storage, Version=9.3.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35.
 6) Tried binding to 'Azure.Storage.Blobs.Specialized.AppendBlobClient, Azure.Storage.Blobs, Version=12.10.0.0, Culture=neutral, PublicKeyToken=92742159e12e44c8' but user type assembly was 'Microsoft.WindowsAzure.Storage.Blob.CloudBlobContainer, Microsoft.WindowsAzure.Storage, Version=9.3.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35.
 7) Tried binding to 'Azure.Storage.Blobs.BlobClient, Azure.Storage.Blobs, Version=12.10.0.0, Culture=neutral, PublicKeyToken=92742159e12e44c8' but user type assembly was 'Microsoft.WindowsAzure.Storage.Blob.CloudBlobContainer, Microsoft.WindowsAzure.Storage, Version=9.3.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35.
 8) Tried binding to 'Azure.Storage.Blobs.Specialized.BlobBaseClient, Azure.Storage.Blobs, Version=12.10.0.0, Culture=neutral, PublicKeyToken=92742159e12e44c8' but user type assembly was 'Microsoft.WindowsAzure.Storage.Blob.CloudBlobContainer, Microsoft.WindowsAzure.Storage, Version=9.3.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35.

To create this I did the following :

1. Create new function app project using .NET 6.0 in process
2. Created the following function :

using System;
using Microsoft.Azure.WebJobs;
using Microsoft.Azure.WebJobs.Host;
using Microsoft.Extensions.Logging;
using Microsoft.WindowsAzure.Storage.Blob;
using Microsoft.WindowsAzure.Storage.Table;

namespace FunctionApp1
{
    public class Function1
    {
        [FunctionName("Function1")]
        public void Run(
            [TimerTrigger("0 */5 * * * *")] TimerInfo myTimer,
            [Blob("activity-events", Connection = "StorageAccountBlobEndpoint")] CloudBlobContainer cloudBlobContainer,
            ILogger log

        )
        {
            log.LogInformation($"C# Timer trigger function executed at: {DateTime.Now}");
        }
    }
}

Complete CSPROJ is

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net6.0</TargetFramework>
    <AzureFunctionsVersion>v4</AzureFunctionsVersion>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.Storage" Version="4.0.5" />
    <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="4.1.0" />
  </ItemGroup>
  <ItemGroup>
    <None Update="host.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </None>
    <None Update="local.settings.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
      <CopyToPublishDirectory>Never</CopyToPublishDirectory>
    </None>
  </ItemGroup>
</Project>

I want to have a table binding too in future which I understand precludes V 5.X of Microsoft.Azure.WebJobs.Extensions.Storage.

I'm probably missing something basic here but if anyone can identify would be appreciated.

CodePudding user response：

Are you looking at the blob and table to be output bindings since your input/trigger binding is a timer?

Take a look at this doc: https://docs.microsoft.com/en-us/azure/azure-functions/functions-bindings-storage-blob-output?tabs=in-process,extensionv5&pivots=programming-language-csharp

I believe something along the lines of:

            public class Function1
{
    [FunctionName("Function1")]
    public void Run([TimerTrigger("0 */5 * * * *")]TimerInfo myTimer, 
        [Blob("activity-events", FileAccess.Write, Connection = "MyBlobConnString")] out Stream myblob,
        ILogger log)
    {
        log.LogInformation($"C# Timer trigger function executed at: {DateTime.Now}");

        //DO SOMETHING WITH myBlob before function exits
    }
}

CodePudding user response：

OK as expected it seems to have turned out to be fairly simple - instead of referencing CloudBlobContainer from Microsoft.WindowsAzure.Storage.Blob, I switched to referencing it from Microsoft.Azure.Cosmos.Table.

Side note : this unleashed an enormous pandora's box of other things I now need to fix in this existing solution.