[GitHub] [airflow] tirkarthi commented on issue #23333: airflow should show where it's looking for templated file when jinja raises the exception jinja2.exceptions.TemplateNotFound:

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

tirkarthi commented on issue #23333:
URL: https://github.com/apache/airflow/issues/23333#issuecomment-1112524103

   jinja doesn't include searchpath in the error message. The exception probably needs to be caught at Airflow side to reraise with searchpath appended.
   
   ```diff
   diff --git a/airflow/models/abstractoperator.py b/airflow/models/abstractoperator.py
   index 2c53a8b75..e70b37001 100644
   --- a/airflow/models/abstractoperator.py
   +++ b/airflow/models/abstractoperator.py
   @@ -382,7 +382,13 @@ class AbstractOperator(LoggingMixin, DAGNode):
    
            if isinstance(value, str):
                if any(value.endswith(ext) for ext in self.template_ext):  # A filepath.
   -                template = jinja_env.get_template(value)
   +                from jinja2.exceptions import TemplateNotFound
   +
   +                try:
   +                    template = jinja_env.get_template(value)
   +                except TemplateNotFound as e:
   +                    message = f"{value} not found in search path {jinja_env.loader.searchpath}"
   +                    raise TemplateNotFound(message)
                else:
                    template = jinja_env.from_string(value)
                dag = self.get_dag()
   ```
   
   ```
   jinja2.exceptions.TemplateNotFound: /tmp/a/python_template_exts.txt not found in search path ['/opt/airflow/tests/operators', '/']
   ```


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