C#: Can't use CloudBlockBlob as input parameter

I want to use a CloudBlockBlob as a binding parameter, but I get an exception from the function script host when I try to do this.

C# function:

public static void Run(CloudBlockBlob blobInput, TraceWriter log)

Binding:

{
    "bindings": [
        {
            "type": "queueTrigger",
            "direction": "in",
            "queueName": "resizerequest"
        },
        {
            "type": "blob",
            "name": "blobInput",
            "direction": "in",
            "path": "{BlobNameLG}/{FileName}"
        }
    ]
}

Then, in the log stream, I see this:

System.InvalidOperationException: Cannot bind blob to CloudBlockBlob using access Read.
at Microsoft.Azure.WebJobs.Host.Blobs.ConverterArgumentBindingProvider`1.TryCreate(ParameterInfo parameter, Nullable`1 access)
...

I see the same issue if I try to do an output binding with CloudBlockBlob. A Stream binding seems to work fine, however.

[mathewc]

Supported bindings are detailed here: http://go.microsoft.com/fwlink/?LinkID=524028&clcid=0x409

Likely the issue is we’re only binding BlobAttribute using FileAccess.Read (the default), not taking the binding direction into account. If CloudBlockBlob only supports RW as the PDF indicates, we probably need to have direction=inout, and when we bind, we interpret that as FileAccess.ReadWrite

[lindydonna]

Awesome! Could you let me know when the fix is in staging or prod?