[GitHub] [airflow] eladkal commented on a change in pull request #22416: Pass X-Presto-Client-Info in presto hook

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

eladkal commented on a change in pull request #22416:
URL: https://github.com/apache/airflow/pull/22416#discussion_r834522320



##########
File path: airflow/providers/presto/hooks/presto.py
##########
@@ -27,6 +28,33 @@
 from airflow.configuration import conf
 from airflow.hooks.dbapi import DbApiHook
 from airflow.models import Connection
+from airflow.utils.operator_helpers import AIRFLOW_VAR_NAME_FORMAT_MAPPING
+
+try:
+    from airflow.utils.operator_helpers import DEFAULT_FORMAT_PREFIX
+except ImportError:
+    # This is from airflow.utils.operator_helpers,
+    # For the sake of provider backward compatibility, this is hardcoded if import fails
+    # https://github.com/apache/airflow/pull/22416#issuecomment-1075531290
+    DEFAULT_FORMAT_PREFIX = 'airflow.ctx.'
+
+
+def generate_presto_client_info() -> str:
+    """Return json string with dag_id, task_id, execution_date and try_number"""
+    context_var = {
+        format_map['default'].replace(DEFAULT_FORMAT_PREFIX, ''): os.environ.get(
+            format_map['env_var_format'], ''
+        )
+        for format_map in AIRFLOW_VAR_NAME_FORMAT_MAPPING.values()
+    }
+    task_info = {
+        'dag_id': context_var['dag_id'],

Review comment:
       Can we add also the dag owner?




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