phani8996 commented on a change in pull request #3992: [AIRFLOW-620] Feature to
tail custom number of logs instead of rendering whole log
URL: https://github.com/apache/incubator-airflow/pull/3992#discussion_r224701122
##########
File path: airflow/bin/cli.py
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@@ -1023,17 +1023,39 @@ def scheduler(args):
@cli_utils.action_logging
def serve_logs(args):
print("Starting flask")
- import flask
- flask_app = flask.Flask(__name__)
+ from flask import Flask, request, Response, stream_with_context,
send_from_directory
+ flask_app = Flask(__name__)
@flask_app.route('/log/<path:filename>')
def serve_logs(filename): # noqa
+ def tail_logs(logdir, filename, num_lines):
+ logpath = "{logdir}/{filename}".format(logdir=logdir,
filename=filename)
+ logsize = os.path.getsize(logpath)
+ if logsize >= 100 * 1024 * 1024:
+ p1 = subprocess.Popen(["tail", "-n " + str(num_lines),
filename],
Review comment:
For bigger log files reading whole file and returning last few lines is
impractical. Based on file size we will rendering by tail or file reading in
python
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