mik-laj commented on a change in pull request #5975: [AIRFLOW-5368] Display DAG
from the CLI
URL: https://github.com/apache/airflow/pull/5975#discussion_r320214538
##########
File path: airflow/bin/cli.py
##########
@@ -441,6 +442,33 @@ def set_is_paused(is_paused, args):
print("Dag: {}, paused: {}".format(args.dag_id, str(is_paused)))
+def show_dag(args):
+ dag = get_dag(args)
+ dot = render_dag(dag)
+ if args.save:
+ filename, _, fileformat = args.save.rpartition('.')
+ dot.render(filename=filename, format=fileformat, cleanup=True)
+ print("File {} saved".format(args.save))
+ elif args.imgcat:
+ data = dot.pipe(format='png')
+ try:
+ proc = subprocess.Popen("imgcat", stdout=subprocess.PIPE,
stdin=subprocess.PIPE)
+ except OSError as e:
+ if e.errno == errno.ENOENT:
+ raise AirflowException(
+ "Failed to execute. Make sure the imgcat executables are
on your systems \'PATH\'"
+ )
+ else:
+ raise
+ out, err = proc.communicate(data)
+ if out:
+ print(out.decode('utf-8'))
+ if err:
+ print(err.decode('utf-8'))
+ else:
+ print(dot.source)
Review comment:
It works. I checked it.
```
airflow dags show example_gcp_vision_explicit_id --save a.dot
```
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