Azure功能 - c＃ - 带有Blob绑定的ServicebusTrigger

Question

I have a python function with a servicebus trigger and a blob input binding. The name of the blob match the content of the queue message. My function.json file looks like that:

{
"bindings": [
    {
    "type": "serviceBusTrigger",
    "name": "inputMessage",
    "connection": "Omnibus_Validation_Listen_Servicebus",
    "queueName": "validation-input-queue",
    "accessRights": "listen",
    "direction": "in"
    },
    {
    "type": "blob",
    "name": "inputBlob",
    "path": "baselines/{inputMessage}",
    "connection": "Omnibus_Blob_Storage",
    "direction": "in"
    }
],
"disabled": false
}

And it is working like a charm.

I'd to create a C# function with the same bindings but it does not seem to work. I've used the same function.json file.

I have a project.json file:

{
    "frameworks": {
        "net46": {
            "dependencies": {
                "WindowsAzure.Storage": "8.5.0"
            }
        }
    }
}

and my run.csx file looks like that:

public static void Run(string inputMessage, Stream inputBlob, TraceWriter log)
{
    log.Info($"C# ServiceBus queue trigger function processed message: {inputMessage}");
}

When I save/run the function, I received this error:

Function ($import-baseline) Error: Microsoft.Azure.WebJobs.Host: Error indexing method 'Functions.import-baseline'. Microsoft.Azure.WebJobs.Host: No binding parameter exists for 'inputMessage'.

Is there any difference between the python and c# sdk for this kind of binding ?

Answer 1

I also can reproduce it on my side if I bind input blob path with baselines\\{serviceBusTrigger} or baselines\\{inputMessage} in the function.json file.

I am not sure whether it is supported to integrated input servicebus queue and input blob currently. We could give our feedback to Azure function team.

If Azure storage queue is acceptable we could use Azure storage queue trigger to do that. I test it on my side, it works correctly.

run.csx file

using System;
using System.Threading.Tasks;

public static void Run(string myQueueItem, Stream inputBlob, TraceWriter log)
{
    log.Info($"C# storage queue trigger function processed message: {myQueueItem}");
    StreamReader reader = new StreamReader(inputBlob);
    string text = reader.ReadToEnd();
    log.Info(text);
}

function.json

{
  "bindings": [
    {
      "type": "blob",
      "name": "inputBlob",
      "path": "incontainer/{queueTrigger}",
      "connection": "testweblog_STORAGE",
      "direction": "in"
    },
    {
      "type": "queueTrigger",
      "name": "myQueueItem",
      "queueName": "myqueue",
      "connection": "testweblog_STORAGE",
      "direction": "in"
    }
  ],
  "disabled": false
}