[GitHub] [skywalking] kezhenxu94 commented on issue #7381: [Python] provide a wrapper script to initiate the Python agent without code changes in user app

[GitBox <gi...@apache.org>]

kezhenxu94 commented on issue #7381:
URL: https://github.com/apache/skywalking/issues/7381#issuecomment-895229962


   > I'm quite interested in this one, could you elaborate a bit more on how this can be achieved? @kezhenxu94
   
   @Superskyyy thanks for your interest, the basic idea is to write a command line tool (in Python language, for example, named `sw-python`) and start the SkyWalking Python agent first, then start the user-app command, e.g. `sw-python app.py`, or `sw-python gunicorn myproject.wsgi`, or `sw-python django ......`, etc.
   
   I haven't had a chance to look into the details but the following might be a start point:
   
   ```python
   import os
   import sys
   
   from skywalking import config, agent
   
   if __name__ == '__main__':
       args = sys.argv[1:]
   
       bin_directory = os.path.dirname(sys.argv[0])
   
       python_exe = os.path.basename(sys.executable)
       python_exe_path = os.path.join(bin_directory, python_exe)
       if (not os.path.exists(python_exe_path) or
               not os.access(python_exe_path, os.X_OK)):
           python_exe_path = sys.executable
   
       config.service_name = 'provider'
       config.logging_level = 'DEBUG'
       agent.start()
   
       os.execl(python_exe_path, python_exe_path, *args)
   ```


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