[GitHub] [airflow] ashb commented on a change in pull request #6722: [AIRFLOW-4922]Fix task get log by Web UI

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

ashb commented on a change in pull request #6722: [AIRFLOW-4922]Fix task get log by Web UI
URL: https://github.com/apache/airflow/pull/6722#discussion_r360437500
 
 

 ##########
 File path: airflow/utils/log/file_task_handler.py
 ##########
 @@ -81,6 +82,34 @@ def _render_filename(self, ti, try_number):
                                              execution_date=ti.execution_date.isoformat(),
                                              try_number=try_number)
 
+    @provide_session
+    def query_task_hostname(self, ti, try_number, session=None):
+        """
+        Get task log hostname by log table and try_number
+
+        :param ti: task instance record
+        :param try_number: current try_number to read log from
+        :param session: database session
+        :type session: sqlalchemy.orm.session.Session
+        :return: log message hostname
+        """
+        from airflow import models
+        res_log = session.query(models.Log).filter(
+            models.Log.dag_id == ti.dag_id,
+            models.Log.task_id == ti.task_id,
+            models.Log.execution_date == ti.execution_date,
+            models.Log.owner != 'anonymous',
+            models.Log.event == 'cli_run',
+            models.Log.extra.like('%--raw%')
+        ).order_by(models.Log.id).limit(1).offset(try_number - 1).first()
 
 Review comment:
   Which cases is this needed in? This seems like an awful lot of conditions here.

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