examples/opencensus/python-app not work by google.protobuf.internal.well_known_types.ParseError

[afiram]

$ cd examples/opencensus
$ docker-compose up 
...
python-app_1       | Performing system checks...
python-app_1       |
python-app_1       | Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x7f4d2bf08268>
python-app_1       | Traceback (most recent call last):
python-app_1       |   File "/usr/local/lib/python3.6/site-packages/django/utils/autoreload.py", line 228, in wrapper
python-app_1       |     fn(*args, **kwargs)
python-app_1       |   File "/usr/local/lib/python3.6/site-packages/django/core/management/commands/runserver.py", line 125, in inner_run
python-app_1       |     self.check(display_num_errors=True)
python-app_1       |   File "/usr/local/lib/python3.6/site-packages/django/core/management/base.py", line 359, in check
python-app_1       |     include_deployment_checks=include_deployment_checks,
python-app_1       |   File "/usr/local/lib/python3.6/site-packages/django/core/management/base.py", line 346, in _run_checks
python-app_1       |     return checks.run_checks(**kwargs)
python-app_1       |   File "/usr/local/lib/python3.6/site-packages/django/core/checks/registry.py", line 81, in run_checks
python-app_1       |     new_errors = check(app_configs=app_configs)
python-app_1       |   File "/usr/local/lib/python3.6/site-packages/django/core/checks/urls.py", line 16, in check_url_config
python-app_1       |     return check_resolver(resolver)
python-app_1       |   File "/usr/local/lib/python3.6/site-packages/django/core/checks/urls.py", line 26, in check_resolver
python-app_1       |     return check_method()
python-app_1       |   File "/usr/local/lib/python3.6/site-packages/django/urls/resolvers.py", line 254, in check
python-app_1       |     for pattern in self.url_patterns:
python-app_1       |   File "/usr/local/lib/python3.6/site-packages/django/utils/functional.py", line 35, in __get__
python-app_1       |     res = instance.__dict__[self.name] = self.func(instance)
python-app_1       |   File "/usr/local/lib/python3.6/site-packages/django/urls/resolvers.py", line 405, in url_patterns
python-app_1       |     patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
python-app_1       |   File "/usr/local/lib/python3.6/site-packages/django/utils/functional.py", line 35, in __get__
python-app_1       |     res = instance.__dict__[self.name] = self.func(instance)
python-app_1       |   File "/usr/local/lib/python3.6/site-packages/django/urls/resolvers.py", line 398, in urlconf_module
python-app_1       |     return import_module(self.urlconf_name)
python-app_1       |   File "/usr/local/lib/python3.6/importlib/__init__.py", line 126, in import_module
python-app_1       |     return _bootstrap._gcd_import(name[level:], package, level)
python-app_1       |   File "<frozen importlib._bootstrap>", line 994, in _gcd_import
python-app_1       |   File "<frozen importlib._bootstrap>", line 971, in _find_and_load
python-app_1       |   File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
python-app_1       |   File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
python-app_1       |   File "<frozen importlib._bootstrap_external>", line 678, in exec_module
python-app_1       |   File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
python-app_1       |   File "/code/app/urls.py", line 19, in <module>
python-app_1       |     import app.views
python-app_1       |   File "/code/app/views.py", line 5, in <module>
python-app_1       |     from opencensus.trace.exporters.ocagent import trace_exporter
python-app_1       |   File "/usr/local/lib/python3.6/site-packages/opencensus/trace/exporters/ocagent/trace_exporter.py", line 30, in <module>
python-app_1       |     from opencensus.trace.exporters.ocagent import utils
python-app_1       |   File "/usr/local/lib/python3.6/site-packages/opencensus/trace/exporters/ocagent/utils.py", line 17, in <module>
python-app_1       |     from google.protobuf.internal.well_known_types import ParseError

pip freeze|grep proto
googleapis-common-protos==1.6.0
protobuf==3.9.1

[lmolkova]

Locaforwarder is not supported and tis repo is being archived.

Please follow this doc to configure your application to send data to Azure monitor: https://docs.microsoft.com/en-us/azure/azure-monitor/app/opencensus-python

[afiram]

@lmolkova ok, thanks!
so I have a question, is OpenCensus Azure Monitor Exporters full suport live metric stream ?

LocalForwarder supported LiveStream
refs: https://github.com/microsoft/ApplicationInsights-Home/issues/315#issuecomment-452119768

and, opencensus/ext/azure/ is refs dc.services.visualstudio.com but rt.services.visualstudio.com not.

# ~/.ghq/github.com/Microsoft/ApplicationInsights-LocalForwarder
$ ag visualstudio.com src/Library/OpenCensusTelemetryConverter.cs
327:            return host != null && (host.StartsWith("dc.services.visualstudio.com")
328:                   || host.StartsWith("rt.services.visualstudio.com"));

# .ghq/github.com/census-instrumentation/opencensus-python
$ grep -Rn visualstudio.com contrib/opencensus-ext-azure/opencensus/ext/azure/
contrib/opencensus-ext-azure/opencensus/ext/azure/common/__init__.py:24:        endpoint='https://dc.services.visualstudio.com/v2/track',

[lmolkova]

so I have a question, is OpenCensus Azure Monitor Exporters full suport live metric stream ?

Not at the moment. We are looking into this and plan to support live stream, no ETA for now

[UtheMan]

Hi, What about the go sample?
The official doc still links to this LocalForwarder (https://docs.microsoft.com/en-us/azure/azure-monitor/app/opencensus-go). would that work or there is no supported way to forward opencensus metrics to azure monitor at the moment?