UnboundLocalError: local variable 'canvas_manifest' referenced before assignment

[frederikbisback]

An issue in the pipeline step in Azure DevOps:
Config:

YAML Config of the above configuration:

#Your build pipeline references an undefined variable named ‘BuildStagingDirectory’. Create or edit the build pipeline for this YAML file, define the variable on the Variables tab. See https://go.microsoft.com/fwlink/?linkid=865972
#Your build pipeline references an undefined variable named ‘SolutionName’. Create or edit the build pipeline for this YAML file, define the variable on the Variables tab. See https://go.microsoft.com/fwlink/?linkid=865972
#Your build pipeline references an undefined variable named ‘BuildStagingDirectory’. Create or edit the build pipeline for this YAML file, define the variable on the Variables tab. See https://go.microsoft.com/fwlink/?linkid=865972
#Your build pipeline references an undefined variable named ‘SolutionName’. Create or edit the build pipeline for this YAML file, define the variable on the Variables tab. See https://go.microsoft.com/fwlink/?linkid=865972

steps:

• task: PythonScript@0
  displayName: 'powerapps-docstring'
  inputs:
  scriptPath: 'powerapps-docstring/main.py'
  arguments: '--source $(BuildStagingDirectory)$(SolutionName)\managed\ --output $(BuildStagingDirectory)$(SolutionName)\managed\ --config powerapps-docstring\config.yaml'
  continueOnError: true

OUTPUT:

2021-11-07T16:05:32.8040424Z ##[section]Starting: powerapps-docstring
2021-11-07T16:05:32.8327632Z ==============================================================================
2021-11-07T16:05:32.8327960Z Task : Python script
2021-11-07T16:05:32.8328195Z Description : Run a Python file or inline script
2021-11-07T16:05:32.8328433Z Version : 0.182.0
2021-11-07T16:05:32.8328748Z Author : Microsoft Corporation
2021-11-07T16:05:32.8329065Z Help : https://docs.microsoft.com/azure/devops/pipelines/tasks/utility/python-script
2021-11-07T16:05:32.8329462Z ==============================================================================
2021-11-07T16:05:33.1525497Z [command]C:\hostedtoolcache\windows\Python\3.9.7\x64\python.exe D:\a\1\s\powerapps-docstring\main.py --source build\SolutionDemo\managed\ --output build\SolutionDemo\managed\ --config config.yaml
2021-11-07T16:05:33.2411939Z build\SolutionDemo\managed/
2021-11-07T16:05:33.2412839Z Traceback (most recent call last):
2021-11-07T16:05:33.2413325Z File "D:\a\1\s\powerapps-docstring\main.py", line 86, in
2021-11-07T16:05:33.2413942Z main(sys.argv[1:])
2021-11-07T16:05:33.2414362Z File "D:\a\1\s\powerapps-docstring\main.py", line 79, in main
2021-11-07T16:05:33.2414816Z docstring = Docstring(pa_src_path, output_path, config)
2021-11-07T16:05:33.2415299Z File "D:\a\1\s\powerapps-docstring\powerapps_docstring\documentation.py", line 15, in init
2021-11-07T16:05:33.2415796Z self.manifest_file = self.parser.get_canvas_manifest()
2021-11-07T16:05:33.2416293Z File "D:\a\1\s\powerapps-docstring\powerapps_docstring\parser.py", line 44, in get_canvas_manifest
2021-11-07T16:05:33.2416744Z return canvas_manifest
2021-11-07T16:05:33.2417163Z UnboundLocalError: local variable 'canvas_manifest' referenced before assignment
2021-11-07T16:05:33.2524300Z ##[error]The process 'C:\hostedtoolcache\windows\Python\3.9.7\x64\python.exe' failed with exit code 1
2021-11-07T16:05:33.2731262Z ##[section]Finishing: powerapps-docstring

[sebastian-muthwill]

The error: powerapps_docstring\parser.py", line 44, in get_canvas_manifest means the CanavasManifest.json file was not found in the source folder.
You provided as sours .../managed/, I guess it is not the base folder of the power apps. Make sure the folder you provide as source contains the CanvasManifest.json file. In the example it ist: example/src/meetingcapturedemo/

I already created an issue to implement better error handling and will log some informations to the console.

[frederikbisback]

So it's only possible when exporting the canvas app itself?
When using the Azure DevOps pipeline, it's the export of the solution created into the repo.

Thanks for the feedback.

[sebastian-muthwill]

Currently it's only working with an unpacked .msapp. But this should be possible to unpack the .msapp file within the pipeline.

[frederikbisback]

Hello Sebastian,

I have implemented your solution into an Azure DevOps pipeline, and the result it's working!
I will write in the coming days a blog post about where I will document the Azure DevOps pipeline.

It's a cool project. I loved to support it further during the new releases.

Keep you posted.

Regards,

Frederik

[sebastian-muthwill]

Great to hear. Send me a link to your blog post. Here or on Twitter.