Azure-functions-host: 2.0 javascript function: eventhubtrigger binding type not registered

[larsonmpdx]

Investigative information

I tried installing the extension by adding a new function with an event hub binding, but the install button doesn't do anything

• Timestamp: this error prevents any invocations
• Function App version (1.0 or 2.0-beta): 2.0-beta
• Function App name:
• Function name(s) (as appropriate):
• Invocation ID: this error prevents any invocations
• Region: us east 2

Repro steps

set up a windows 2.0 function and upload a javascript function with bindings similar to this:

{
  "bindings": [
    {
      "type": "eventHubTrigger",
      "name": "eventHubMessages",
      "direction": "in",
      "path": "iothub",
      "connection": "[generated name after setting up binding]",
      "cardinality": "many",
      "consumerGroup": "intake",
      "eventHubName": "unused"
    }
  ]
}

Expected behavior

function is invoked by iot hub events. I don't want to have to manually set up this binding type, or if I do I don't want to have to refresh it when it hiccups.

Actual behavior

not invoked, and a warning about the binding type being missing

Known workarounds

it worked last week after I got lucky installing the extension through the web portal (the install button in the above screenshot worked)

[larsonmpdx]

saw this page, got logs from kudu
https://github.com/Azure/azure-functions-host/wiki/Updating-your-App-(portal)

{"Id":"91e4914c-1ce0-4317-b765-876529c82dfa","Status":1,"StartTime":"2018-08-21T03:45:00.4347064+00:00","EndTime":"2018-08-21T03:45:38.1946073+00:00","Error":null,"Properties":{"id":"Microsoft.Azure.WebJobs.Extensions.EventHubs","version":"3.0.0-beta5"}}

tried a fresh host and the install button hung with a new error:

[larsonmpdx]

I updated extensions using the instructions in the above link and the warnings went away but the function doesn't trigger. I get 503 service unavailable now when trying a test run with the "run" button

[paulbatum]

@soninaren can you take a look at this?

[pandres95]

I got the same error as @larsonmpdx. Created a new function today and copied code, but still doesn't work.

I updated extensions using the instructions in the above link and the warnings went away but the function doesn't trigger. I get 503 service unavailable now when trying a test run with the "run" button

[larsonmpdx]

I won't be much help at this point, I only needed runtime 2.0 for a higher javascript version and I switched to runtime 1.0 with a simple babel setup instead

[pandres95]

Actually, I solved that error by deleting app_offline.htm. This is a file related to #3269 and I guess it should be accordingly documented.

I got the same error as @larsonmpdx. Created a new function today and copied code, but still doesn't work.

I updated extensions using the instructions in the above link and the warnings went away but the function doesn't trigger. I get 503 service unavailable now when trying a test run with the "run" button

[soninaren]

@pandres95 Thank you for reporting this back. There were a few issues with extension installation, that have been resolved as a part of V2 GA release. The portal and runtime should not cause anymore installation issues. Please re-open or create another issue if you still run into installation issues.