Azure function app (python) Retry with timer_trigger is not working

Akash Kunwar 0 Reputation points
2024-06-05T04:03:34.8+00:00

I am facing an issue to run the below code. I directly ran the code from the
Microsoft official documentation

Code:

from azure.functions import FunctionApp, TimerRequest, Context, AuthLevel
import logging
app = FunctionApp(http_auth_level=AuthLevel.ANONYMOUS)
@app.timer_trigger(schedule="*/1 * * * * *", arg_name="mytimer",
                   run_on_startup=False,
                   use_monitor=False)
@app.retry(strategy="fixed_delay", max_retry_count="3",
           delay_interval="00:00:01")
def mytimer(mytimer: TimerRequest, context: Context) -> None:
    logging.info(f'Current retry count: {context.retry_context.retry_count}')
    if context.retry_context.retry_count == \
            context.retry_context.max_retry_count:
        logging.info(
            f"Max retries of {context.retry_context.max_retry_count} for "
            f"function {context.function_name} has been reached")
    else:
        raise Exception("This is a retryable exception")

I am getting this error

Received WorkerMetadataRequest, request ID b7bfaf90-17e3-4983-b4a5-1ce251db2312, directory: /src/components/test
[2024-06-05T03:09:22.466Z] Worker failed to index functions
[2024-06-05T03:09:22.466Z] Result: Failure
[2024-06-05T03:09:22.466Z] Exception: AttributeError: 'FunctionApp' object has no attribute 'retry'
[2024-06-05T03:09:22.466Z] Stack:   File "/usr/lib/azure-functions-core-tools-4/workers/python/3.10/LINUX/X64/azure_functions_worker/dispatcher.py", line 338, in handle_functions_metadata_request
[2024-06-05T03:09:22.466Z]     fx_metadata_results = self.index_functions(function_path)
[2024-06-05T03:09:22.466Z]   File "/usr/lib/azure-functions-core-tools-4/workers/python/3.10/LINUX/X64/azure_functions_worker/dispatcher.py", line 607, in index_functions
[2024-06-05T03:09:22.466Z]     indexed_functions = loader.index_function_app(function_path)
[2024-06-05T03:09:22.467Z]   File "/usr/lib/azure-functions-core-tools-4/workers/python/3.10/LINUX/X64/azure_functions_worker/utils/wrappers.py", line 44, in call
[2024-06-05T03:09:22.467Z]     return func(*args, **kwargs)
[2024-06-05T03:09:22.467Z]   File "/usr/lib/azure-functions-core-tools-4/workers/python/3.10/LINUX/X64/azure_functions_worker/loader.py", line 151, in index_function_app
[2024-06-05T03:09:22.467Z]     imported_module = importlib.import_module(module_name)
[2024-06-05T03:09:22.467Z]   File "/usr/local/lib/python3.10/importlib/_init_.py", line 126, in import_module
[2024-06-05T03:09:22.467Z]     return _bootstrap._gcd_import(name[level:], package, level)
[2024-06-05T03:09:22.467Z]   File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
[2024-06-05T03:09:22.468Z]   File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
[2024-06-05T03:09:22.468Z]   File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked
[2024-06-05T03:09:22.468Z]   File "<frozen importlib._bootstrap>", line 688, in _load_unlocked
[2024-06-05T03:09:22.468Z]   File "<frozen importlib._bootstrap_external>", line 883, in exec_module
[2024-06-05T03:09:22.468Z]   File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
[2024-06-05T03:09:22.468Z]   File "/src/components/test/function_app.py", line 10, in <module>
[2024-06-05T03:09:22.468Z]     @app.retry(strategy="fixed_delay", max_retry_count="3",
[2024-06-05T03:09:22.468Z] .
[2024-06-05T03:09:22.473Z] 0 functions found
[2024-06-05T03:09:22.491Z] 0 functions loaded
[2024-06-05T03:09:22.493Z] Looking for extension bundle Microsoft.Azure.Functions.ExtensionBundle at /home/vscode/.azure-functions-core-tools/Functions/ExtensionBundles/Microsoft.Azure.Functions.ExtensionBundle

I am using poetry, azure function apps and docker container with the following package versions:

  1. python 3.10
  2. azure-functions 1.19.0
  3. azure-core 1.30.1
  4. azure-identity 1.16.0
  5. Python model v2 in Azure
  6. run time version on azure: 4.34.1.1

I did try with azure function 1.19.0; the retry policy is there for timertrigger but I am still getting this annoying issue.

https://github.com/Azure/azure-functions-python-library/blob/bdeb2c2e29dd491129784ccb5cf5b5371b1ce286/azure/functions/decorators/function_app.py#L3190

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Azure Functions
An Azure service that provides an event-driven serverless compute platform.
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  1. SwathiDhanwada-MSFT 18,211 Reputation points
    2024-06-05T07:38:54.0233333+00:00

    @Akash Kunwar Thanks for reaching out. I have reproduced the issue in my environment and its working as expected. I have created Timer Trigger function by selecting Python V2 model as option using Visual Studio Code.

    User's image

    Can you please share the steps you have followed to execute the code ?