Log request to this driver fails within openeo-python-client and openeo-webeditor

[jonas-eberle]

I have tested the logs functionatliy within the openeo-python-client and the openeo-webeditor. But the logs request of a job fails with an internal server error: TypeError: Object of type EoLink is not JSON serializable.

[2021-10-02 18:55:17,249] ERROR in app: Exception on /api/v1.0/jobs/user-job-6f60f678-1dee-42af-864e-ebbfa1f3364b/logs [GET]
Traceback (most recent call last):
  File "/usr/lib/python3.8/site-packages/flask/app.py", line 1950, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/lib/python3.8/site-packages/flask/app.py", line 1936, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/usr/lib/python3.8/site-packages/flask_restful/__init__.py", line 468, in wrapper
    resp = resource(*args, **kwargs)
  File "/usr/lib/python3.8/site-packages/openeo_grass_gis_driver/authentication.py", line 76, in decorated
    return f(*args, **kwargs)
  File "/usr/lib/python3.8/site-packages/flask/views.py", line 89, in view
    return self.dispatch_request(*args, **kwargs)
  File "/usr/lib/python3.8/site-packages/flask_restful/__init__.py", line 583, in dispatch_request
    resp = meth(*args, **kwargs)
  File "/usr/lib/python3.8/site-packages/openeo_grass_gis_driver/jobs_job_id_logs.py", line 87, in get
    return make_response(jsonify(job_logs), 200)
  File "/usr/lib/python3.8/site-packages/flask/json/__init__.py", line 370, in jsonify
    dumps(data, indent=indent, separators=separators) + "\n",
  File "/usr/lib/python3.8/site-packages/flask/json/__init__.py", line 211, in dumps
    rv = _json.dumps(obj, **kwargs)
  File "/usr/lib/python3.8/json/__init__.py", line 234, in dumps
    return cls(
  File "/usr/lib/python3.8/json/encoder.py", line 199, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/usr/lib/python3.8/json/encoder.py", line 257, in iterencode
    return _iterencode(o, 0)
  File "/usr/lib/python3.8/site-packages/flask/json/__init__.py", line 100, in default
    return _json.JSONEncoder.default(self, o)
  File "/usr/lib/python3.8/json/encoder.py", line 179, in default
    raise TypeError(f'Object of type {o.__class__.__name__} '
TypeError: Object of type EoLink is not JSON serializable