samodelkinas opened a new issue, #39584:
URL: https://github.com/apache/airflow/issues/39584
### Apache Airflow version
2.9.1
### If "Other Airflow 2 version" selected, which one?
_No response_
### What happened?
Airflow DAG throws an exception while calling ExternalPythonOperator with
op_kwars dictionary containing value with certain { and % character
combinations:
[2024-05-13 03:50:17,424] {abstractoperator.py:708} ERROR - Exception
rendering Jinja template for task 'redacted', field 'op_kwargs'. Template:
{redacted}
Traceback (most recent call last):
File
"/opt/airflow/venv/airflow/lib64/python3.11/site-packages/airflow/models/abstractoperator.py",
line 700, in _do_render_template_fields
rendered_content = self.render_template(
^^^^^^^^^^^^^^^^^^^^^
File
"/data/user/airflow/venv/airflow/lib64/python3.11/site-packages/airflow/template/templater.py",
line 186, in render_template
return {k: self.render_template(v, context, jinja_env, oids) for k, v in
value.items()}
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/opt/airflow/venv/airflow/lib64/python3.11/site-packages/airflow/template/templater.py",
line 186, in <dictcomp>
return {k: self.render_template(v, context, jinja_env, oids) for k, v in
value.items()}
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/opt/airflow/venv/airflow/lib64/python3.11/site-packages/airflow/template/templater.py",
line 173, in render_template
template = jinja_env.from_string(value)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/opt/airflow/venv/airflow/lib64/python3.11/site-packages/jinja2/environment.py",
line 1105, in from_string
return cls.from_code(self, self.compile(source), gs, None)
^^^^^^^^^^^^^^^^^^^^
File
"/opt/airflow/venv/airflow/lib64/python3.11/site-packages/jinja2/environment.py",
line 768, in compile
self.handle_exception(source=source_hint)
File
"/opt/airflow/venv/airflow/lib64/python3.11/site-packages/jinja2/environment.py",
line 936, in handle_exception
raise rewrite_traceback_stack(source=source)
File "<unknown>", line 1, in template
jinja2.exceptions.TemplateSyntaxError: tag name expected
### What you think should happen instead?
Ideally, all op_kwargs dictionary values should be sent to operators as
base64 encoded string and decoded by an operator to avoid templating errors for
entries like passwords containing special characters. As a workaround, encoding
was done by user and decoded in callable method
### How to reproduce
Create a DAG using ExternalPythonOperator and provide '{%blah' or similar
string used by jinja as escape charaters as the value for one of op_kwargs.
Running the DAG will throw Jinja rendering exception.
### Operating System
Linux RedHat 8
### Versions of Apache Airflow Providers
apache-airflow-providers-common-sql==1.10.0
apache-airflow-providers-ftp==3.7.0
apache-airflow-providers-http==4.8.0
apache-airflow-providers-imap==3.5.0
apache-airflow-providers-sqlite==3.7.0
### Deployment
Virtualenv installation
### Deployment details
_No response_
### Anything else?
_No response_
### Are you willing to submit PR?
- [ ] Yes I am willing to submit a PR!
### Code of Conduct
- [X] I agree to follow this project's [Code of
Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)
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