az iot hub monitor-events fails with ImportError uamqp
herckens opened this issue · 2 comments
Describe the bug
Command Name
az iot hub monitor-events Extension Name: azure-iot. Version: 0.11.0.
Errors:
The command failed with an unexpected error. Here is the traceback:
cannot import name 'c_uamqp' from partially initialized module 'uamqp' (most likely due to a circular import) (/Users/taaerhe4/.azure/cliextensions/azure-iot/uamqp/__init__.py)
Traceback (most recent call last):
File "/usr/local/Cellar/azure-cli/2.30.0_1/libexec/lib/python3.10/site-packages/knack/cli.py", line 231, in invoke
cmd_result = self.invocation.execute(args)
File "/usr/local/Cellar/azure-cli/2.30.0_1/libexec/lib/python3.10/site-packages/azure/cli/core/commands/__init__.py", line 657, in execute
raise ex
File "/usr/local/Cellar/azure-cli/2.30.0_1/libexec/lib/python3.10/site-packages/azure/cli/core/commands/__init__.py", line 720, in _run_jobs_serially
results.append(self._run_job(expanded_arg, cmd_copy))
File "/usr/local/Cellar/azure-cli/2.30.0_1/libexec/lib/python3.10/site-packages/azure/cli/core/commands/__init__.py", line 691, in _run_job
result = cmd_copy(params)
File "/usr/local/Cellar/azure-cli/2.30.0_1/libexec/lib/python3.10/site-packages/azure/cli/core/commands/__init__.py", line 328, in __call__
return self.handler(*args, **kwargs)
File "/usr/local/Cellar/azure-cli/2.30.0_1/libexec/lib/python3.10/site-packages/azure/cli/core/commands/command_operation.py", line 121, in handler
return op(**command_args)
File "/Users/taaerhe4/.azure/cliextensions/azure-iot/azext_iot/operations/hub.py", line 2942, in iot_hub_monitor_events
_iot_hub_monitor_events(
File "/Users/taaerhe4/.azure/cliextensions/azure-iot/azext_iot/operations/hub.py", line 3055, in _iot_hub_monitor_events
from azext_iot.monitor.builders import hub_target_builder
File "/Users/taaerhe4/.azure/cliextensions/azure-iot/azext_iot/monitor/builders/hub_target_builder.py", line 8, in <module>
import uamqp
File "/Users/taaerhe4/.azure/cliextensions/azure-iot/uamqp/__init__.py", line 12, in <module>
from uamqp import c_uamqp # pylint: disable=import-self
ImportError: cannot import name 'c_uamqp' from partially initialized module 'uamqp' (most likely due to a circular import) (/Users/taaerhe4/.azure/cliextensions/azure-iot/uamqp/__init__.py)
To Reproduce:
Steps to reproduce the behavior. Note that argument values have been redacted, as they may contain sensitive information.
az iot hub monitor-events --hub-name {} --output {}
Expected Behavior
Display IoT Hub events.
Environment Summary
macOS-11.6-x86_64-i386-64bit, Darwin 20.6.0
Python 3.10.0
Installer: HOMEBREW
azure-cli 2.30.0
Extensions:
azure-iot 0.11.0
Additional Context
This used to work until a few days ago.
At some point, when running the command, I got this prompt, maybe that has an influence:
Dependency update (uamqp 1.2) required for IoT extension version: 0.11.0.
Continue? (y/n) -> y
Maybe related: Trying to locally run a .NET Azure Function with IoT Hub trigger produces a similar looking error since about the same time:
The listener for function 'IoTHub_EventHub1' was unable to start. Microsoft.Azure.EventHubs.Processor: Encountered error while fetching the list of EventHub PartitionIds. Microsoft.Azure.Amqp: Operation is not valid due to the current state of the object.
There is a similar issue posted here Azure/azure-uamqp-python#281 in the uamqp repo. The fact that it used to work is a good data point. For amqp based commands, there is a --repair flag which will try to reinstall uamqp with uamqp~=1.2 in the IoT extension directory.
Because uamqp is a cython based package that wraps a C implementation, there needs to be an already available compatible pre-compiled distribution or it needs to be built for the target environment. If you updated azure-cli, and the azure-cli Python runtime changed (hypothetically from 3.6.x to 3.10.x) then you may run into issues using a uamqp version compiled for Py 3.6.x. Note the extension does not update when azure-cli is updated.
Also we have recently soft released v0.12.1 of the azure-iot extension. You can download & install or install via az extension add --source https://github.com/Azure/azure-iot-cli-extension/releases/download/v0.12.1/azure_iot-0.12.1-py3-none-any.whl. This version should support Py 3.10 on x86/x64 machine architecture.
Closing issue. We've had multiple users being able to solve this problem by running the command with --repair on a recent extension version (0.12.1+) to force a re-install of uamqp. Let us know if you are still having trouble.